CN102436157A - Mechanism for electrifying, method of electrifying, and conductive member - Google Patents

Mechanism for electrifying, method of electrifying, and conductive member Download PDF

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Publication number
CN102436157A
CN102436157A CN2011102767758A CN201110276775A CN102436157A CN 102436157 A CN102436157 A CN 102436157A CN 2011102767758 A CN2011102767758 A CN 2011102767758A CN 201110276775 A CN201110276775 A CN 201110276775A CN 102436157 A CN102436157 A CN 102436157A
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China
Prior art keywords
butt
electroconductive component
conductive fabric
parts
axle
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Granted
Application number
CN2011102767758A
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Chinese (zh)
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CN102436157B (en
Inventor
丰田稔
大吉浩文
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Ricoh Co Ltd
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Ricoh Co Ltd
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Priority claimed from JP2010229137A external-priority patent/JP5742162B2/en
Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Publication of CN102436157A publication Critical patent/CN102436157A/en
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Abstract

A mechanism for electrifying a rotator that is used in an image forming apparatus (50) includes a cloth-like or sheet-like conductive member (6), wherein part of the conductive member comes into contact with an object (1A) to be electrified and the other part of the conductive member (6) comes into surface contact with any one contact member of the rotator (1), a rotating shaft that rotates together with the rotator, and a shaft (4) where the rotator (1) is rotatably supported, so that the object (1A) to be electrified and the contact member are electrically connected to each other through the conductive member (6).

Description

The energising mechanism of rotary body, as the electrifying method and the electroconductive component of supporting body unit, image processing system and rotary body
Technical field
The present invention relates to any employed rotary body of image processing system of electrofax mode, electrostatic recording mode and return to zero energising mechanism (for example earthing mechanism), use the electrifying method (for example earthing method) and the electroconductive component of picture supporting body unit, handle box, tape cell, fixation unit, sheet material delivery unit, image processing system and the rotary body of this rotary body energising mechanism.
Background technology
By motion following technology is arranged: duplicating machine, facsimile recorder, printer, draught machine etc. or the energising mechanism that possesses employed rotary body in the image processing system of electrofax modes such as compounding machine of their multiple functions be for example in the earthing mechanism, and using electric conductivity to be arranged and possess has flexible conductive fabric or remove electric cloth or the conductive sheet for example ground connection (for example with reference to patent documentation 1～4) of switching on.
Patent documentation 1 discloses following technology: the employed electric conductivity turning axle of sheet material conveyer has earthing mechanism with possessing in the earthing device; It is (for example fabric that this earthing mechanism is provided with the core and the conductive material around this core that are formed by resilient material; Below be called conductive fabric); To conducting surface and the guide electric axis surface of this earthing mechanism of the rotation application of force, and other conducting surfaces of this earthing mechanism are contacted with the conductive component of the framework ground conductive of device body and on carry out ground connection.
Patent documentation 2 discloses following technology: be provided in the portion of duplicating and nearby carry out the electric parts that remove that recording medium removes electricity and use and remove electric cloth (conductive fabric) to the conducting fibre of lamellar morphology as matrix material; It and miscellaneous part paste and with the miscellaneous part interlock, make crimping carry out ground connection.
Patent documentation 3 discloses following technology: shown in its Fig. 4, Figure 20～Figure 24 etc.; Be provided with: with the shaft contact spring 75 (first laminated spring) of the drum type ground plate 70 of conducting axle (42b) butt that can support photosensitive drums 7 (cylinder part) rotatably, with at least two above cylindrical spring 77a, the ground spring contact portion 73 of 77b, the 73b (second laminated spring) of inwall (71) butt of photosensitive drums 7; Thus, inwall (71) conducting of conducting axle (42b) with photosensitive drums 7.
Patent documentation 4 discloses following technology: at its Fig. 2, Fig. 3, Fig. 6 etc.; Keeping the end of sheet conveying by the support unit free rotary ground supporting with the turning axle of roller; In the neutralizer of the paper conveyance device of the electrostatic grounding that produces by frictional electrification between said roller and the paper; Earthy conductive component is contacted with the side face part (comprising outer peripheral face and end face) of metallic turning axle via removing electric cloth; The lubricant that has electric conductivity to the face coating of the metallic turning axle that removes electric cloth is provided with at the face that removes electric cloth attachment surface side of earthy conductive component and makes the opposite face that exposes that this earthy conductive component do not contact with the side face of metallic turning axle.
But in the technology of patent documentation 1 record, utilization possesses the deadweight of transporting roller of conductive shaft and switches on from vertical direction this conductive shaft to pushing the conductive fabric butt, for example is the structure of ground connection, is not utilize conductive fabric energetically flexible.
In the technology of patent documentation 2 record owing to be to make crimping linkedly with the miscellaneous part stickup and with miscellaneous part removing electric cloth, so with patent documentation 1 likewise be not utilize conductive fabric energetically flexible.
In the technology of patent documentation 3 records; Do not use conductive fabric but make metallic conducting axle and metal parts promptly first laminated spring slide, so have because parts or the folk prescription component wear produces unusual sound and owing to burning and poor flow or owing to the problem of crimping effect high capacity each other.The countermeasure of sliding each other as these metals; Also there is suitable conductive lubricant to be used as the method for the problems referred to above countermeasure; But conductive lubricant is wiped off along with the increase of sliding time at metal parts contact point place each other; So very effective, but do not reach basic solution at the slip initial stage.
Because the image processing system of electrofax modes such as duplicating machine, facsimile recorder, printer is that office machine is in indoor use, so special hope does not have noises such as unusual sound.
In the technology of patent documentation 4 record, with patent documentation 1～3 likewise be not utilize conductive fabric energetically flexible.
Summary of the invention
Therefore; The present invention In view of the foregoing develops; Fundamental purpose be to realize and provide any employed rotary body of image processing system of a kind of electrofax mode, electrostatic recording mode and return to zero energising (ground connection) mechanism, use energising (ground connection) method and the electroconductive component (for example conductive fabric) of picture supporting body unit, handle box, tape cell, fixation unit, sheet material delivery unit, image processing system and the rotary body of this rotary body energising mechanism; This invention solves by metal and slides each other and the problems referred to above of causing; And the removal conductive lubricant makes simple in structure cheap and consider environmental protection.
In order to solve above-mentioned problem and to achieve the above object, in the invention of each content of the present invention, adopt mechanism that following characteristics are arranged and the specific item of invention (below be called " structure ").
The invention of content 1 record of the present invention is the energising mechanism of the employed rotary body of image processing system; Make the part and energising object side butt of cloth shape or sheet electroconductive component; In turning axle that the another part that makes said electroconductive component rotates with said rotary body, with this rotary body and the axle that can support said rotary body rotatably any by the butt parts with the face butt; Thus, said energising object and said is switched on by the butt parts.
The invention of content of the present invention 2 records is in the energising mechanism of the rotary body of content 1 record of the present invention, said electroconductive component deflection and with said by butt parts butt.
The invention of content 3 records of the present invention is that said butt direction by the said relatively electroconductive component of butt parts is the direction identical with the deflection direction of this electroconductive component in the energising mechanism of the rotary body of content 2 records of the present invention.
The invention of content 4 records of the present invention is in the energising mechanism of the rotary body of content 1 to 3 each record of the present invention; Said electroconductive component has otch; It can connect said by the butt parts, and said make said electroconductive component deflection when being connected by the butt parts and with said by butt parts butt.
The invention of content of the present invention 5 records is that said otch has been formed a plurality of in the energising mechanism of the rotary body of content 4 records of the present invention, said can be when being connected at a plurality of positions and said by butt parts butt by the butt parts.
The invention of content 6 records of the present invention is in the energising mechanism of the rotary body of content 5 records of the present invention; The length of said a plurality of otch can be imitated said this outer shape by the butt parts when being connected by the butt parts and adjusted, from said by the kernel of section of butt parts along with being formed shortly near said outer shape.
The invention of content 7 records of the present invention is that said otch is made up of a plurality of first radial incisions that the substantial middle from said electroconductive component is radial extension in the energising mechanism of the rotary body of content 6 records of the present invention.
The invention of content 8 records of the present invention is in the energising mechanism of the rotary body of content 7 records of the present invention; Have a plurality of second radial incisions; Its length than first radial incision is short, and change is radial extension with the phase place of first radial incision from said central authorities around said central authorities.
The invention of content 9 records of the present invention is that the central authorities of said second radial incision are located at the position of opening partially from the substantial middle of said electroconductive component in the energising mechanism of the rotary body of content 8 records of the present invention.
The invention of content 10 records of the present invention is that first or second radial incision uniformly-spaced disposes the otch that adjoins each other around the central authorities of first or second radial incision in the energising mechanism of the rotary body of content 7 to 9 each records of the present invention.
The invention of content 11 records of the present invention is in the energising mechanism of the rotary body of content 1 to 3 each record of the present invention; Said electroconductive component has and can be connected by the butt parts said; And said make said electroconductive component deflection when being connected by the butt parts and with said by the cutting-out portion of butt parts butt, said cutting-out portion be included in said when being connected by the butt parts with said electroconductive component butt state under the shape at the position that contacts of substantial line.
The invention of content of the present invention 12 records is in the energising mechanism of the rotary body of content 11 records of the present invention, and said electroconductive component has a plurality of radial incisions that are radial extension from the substantial middle of said cutting-out portion.
The invention of content 13 records of the present invention is in the energising mechanism of the rotary body of content 1 to 3 each record of the present invention; Said electroconductive component has and can be connected by the butt parts said; And said make said electroconductive component deflection when being connected by the butt parts and with said by the cutting-out portion of butt parts butt; The shape of said cutting-out portion is, makes when being connected by the butt parts butt state with said electroconductive component along with reducing towards the said butt area that made by the kernel of section of butt parts said.
The invention of content 14 records of the present invention is in the energising mechanism of the rotary body of content 4 to 13 each records of the present invention, and said electroconductive component is the conductive fabric that constitutes by the cloth shape material of at least a fiber of pet fiber, nylon fiber and dacron and nickel and copper braiding.
The invention of content 15 records of the present invention is picture supporting body unit; It has the energising mechanism of the rotary body of content 4 to 14 each records of the present invention; Said rotary body has the Electrophtography photosensor layer by on cylindric conductive base material, possessing, electrostatic recording dielectric layer and magnetic recording magnetic layer any constitute as supporting body; Possesses the vibrating part that is fixed at least one end of said picture supporting body; The said said axle that can be supported said picture supporting body rotatably by connecting the central part of said vibrating part by the butt parts constitutes; Said axle when connecting said electroconductive component, make this electroconductive component deflection and with this butt, possess the metallic electroconductive component, its base end part contacts and is installed in said vibrating part with said electroconductive component; And leading section is fixed on said conductive base material inwall, and said conductive base material is switched on contacting of said electroconductive component by said metallic electroconductive component with said beam warp.
The invention of content 16 records of the present invention is in the picture supporting body unit of content 15 records of the present invention, has pressing component, and its said electroconductive component is pushed to said metallic electroconductive component.
The invention of content 17 records of the present invention is that said pressing component is the non-metal elastomers that comprises rubber, sponge in the picture supporting body unit of content 16 records of the present invention.
The invention of content 18 records of the present invention is to support at least one mechanism's one of from as supporting body, charged mechanism, cleaning mechanism and developing mechanism, selecting; And in the handle box that image forming device body is is freely loaded and unloaded relatively, has the picture supporting body unit of content 15 to 17 each records of the present invention.
The invention of content 19 records of the present invention is image processing systems, and it possesses the handle box as supporting body unit or content of the present invention 18 records that content 15 to 17 each records of the present invention are arranged.
The invention of content 20 records of the present invention is tape cells; It is a belting; This belting possesses the band of the ring-type that the carrying is arranged and transport duplicating image or reproducible image and a plurality of rotary parts of this band of reeling; In said a plurality of rotary part at least one is the driven in rotation parts; And possess the driving mechanism that drives said driven in rotation parts and support the driven rotary part of said band with these driven in rotation parts; Wherein, at least one of said driven in rotation parts and said driven rotary part is the hollow rotating parts that possess cylindric conductive base material, and has the energising mechanism of the rotary body of content 4 to 14 each records of the present invention; Said rotary body is made up of said hollow rotating parts; Possess the vibrating part that is fixed at least one end of said hollow rotating parts, the said said axle that can be supported said hollow rotating parts rotatably by connecting the central part of said vibrating part by the butt parts constitutes, said axle when connecting said electroconductive component, make this electroconductive component deflection and with this butt; Possesses the metallic electroconductive component; Its base end part contacts and is installed in said vibrating part with said electroconductive component, and leading section is fixed on said conductive base material inwall, and said conductive base material is switched on contacting of said electroconductive component by said metallic electroconductive component with said beam warp.
The invention of content 21 records of the present invention is in the tape cell of content 20 records of the present invention, has pressing component, and its said electroconductive component is pushed to said metallic electroconductive component.
The invention of content 22 records of the present invention is that said pressing component is the non-metal elastomers that comprises rubber, sponge in the tape cell of content 21 records of the present invention.
The invention of content 23 records of the present invention is tape cells; It is a belting; This belting possesses the band of the ring-type that the carrying is arranged and transport duplicating image or reproducible image and a plurality of rotary parts of this band of reeling; In said a plurality of rotary part at least one is the driven in rotation parts; And possess the driving mechanism that drives said driven in rotation parts and support the driven rotary part of said band with these driven in rotation parts; Energising mechanism with rotary body of content 4 to 14 each records of the present invention; Saidly constituted by butt parts at least one by said driven in rotation parts and said driven rotary part, at least one of said driven in rotation parts and said driven rotary part when connecting said electroconductive component, make this electroconductive component deflection and with at least one butt of said driven in rotation parts and said driven rotary part, make at least one and said energising object of said driven in rotation parts and said driven rotary part come conducting via said electroconductive component.
The invention of content of the present invention 24 records is in the tape cell of content 23 records of the present invention, said band be as the intermediate duplication body the intermediate duplication band, possess Electrophtography photosensor layer, electrostatic recording dielectric layer and magnetic recording magnetic layer any as the supporting body band and as duplicate transport body duplicate any of moving belt.
The invention of content 25 records of the present invention is fixation units; It is a fixing device; This fixing device has the heater block that possesses thermal source and elastic layer and is forming the pressure-producing part of holding part to this heater block crimping; The sheet-shaped recording medium of transporting the duplicating image that is formed with not photographic fixing is through said holding part; Make the duplicating image of the not photographic fixing on the sheet-shaped recording medium carry out photographic fixing, wherein, have the energising mechanism of the rotary body of content 4 to 14 each records of the present invention; Be equipped with said turning axle at least one of said heater block and said pressure-producing part; Saidly constituted by at least one said turning axle that sets at said heater block and said pressure-producing part by the butt parts, the said turning axle of at least one of said heater block and said pressure-producing part when connecting said electroconductive component, make this electroconductive component deflection and with said turning axle butt, make this turning axle and said energising object come conducting via said electroconductive component.
The invention of content 26 records of the present invention is fixation units; It is a fixing device; This fixing device the heater block with ring-type photographic fixing band, built-in thermal source, with this heater block set up the fixing member of said photographic fixing band, via this fixing member to the crimping of said photographic fixing band and form the pressure-producing part of holding part; And the sheet-shaped recording medium of transporting the duplicating image that is formed with not photographic fixing is through said holding part; Make the duplicating image of the not photographic fixing on the sheet-shaped recording medium carry out photographic fixing; Wherein, Energising mechanism with rotary body of content 4 to 14 each records of the present invention; Be equipped with said rotary body at least one of said heater block, said fixing member and said pressure-producing part; Saidly constituted by at least one said rotary body that sets at said heater block, said fixing member and said pressure-producing part by the butt parts, at least one of said heater block, said fixing member and said pressure-producing part when connecting said electroconductive component, make this electroconductive component deflection and with at least one butt of said heater block, said fixing member and said pressure-producing part, make at least one and said energising object of said heater block, said fixing member and said pressure-producing part come conducting via said electroconductive component.
The invention of content 27 records of the present invention is in the fixation unit of content 25 of the present invention or 26 records, has pressing component, and its said electroconductive component is pushed to said energising object side.
The invention of content 28 records of the present invention is that said pressing component is the non-metal elastomers that comprises rubber, sponge in the fixation unit of content 27 records of the present invention.
The invention of content 29 records of the present invention is sheet material delivery units; It is the sheet material conveyer; This sheet material conveyer transports with the support unit free rotary ground supporting of turning axle that transports parts being provided in sheet-shaped recording medium by supporting; Switching on, wherein, has the energising mechanism of the rotary body of content 4 to 14 each records of the present invention by the said static that frictional electrification produced that transports between parts and the sheet-shaped recording medium; Said turning axle constitutes by being provided in the said electric conductivity turning axle that transports parts; Saidly constituted by said turning axle by the butt parts, said turning axle when connecting said electroconductive component, make this electroconductive component deflection and with said turning axle butt, make this turning axle and said energising object come conducting via said electroconductive component.
The invention of content 30 records of the present invention is in the sheet material delivery unit of content 29 records of the present invention, has pressing component, and its said electroconductive component is pushed to said energising object side.
The invention of content 31 records of the present invention is that said pressing component is the non-metal elastomers that comprises rubber, sponge in the sheet material delivery unit of content 30 records of the present invention.
The invention of content 32 records of the present invention is image processing systems, and it possesses has: at least one unit of the sheet material delivery unit of the fixation unit of the tape cell of content 20 to 24 each records of the present invention, content of the present invention 25 to 28 each records and content of the present invention 29 to 31 each records.
The invention of content 33 records of the present invention is use and electrifying method that be to use the rotary body of cloth shape or sheet electroconductive component by image processing system; The turning axle that makes said rotary body, rotates with this rotary body and can support in the axle of said rotary body any rotatably and conducted via said electroconductive component with the energising object time by the butt parts; Through being touched by the end face of butt parts and said electroconductive component, said energising object and said is switched on via said electroconductive component by the butt parts with said by the length direction quadrature of butt parts this.
The invention of content 34 records of the present invention is use and electrifying method that be to use the rotary body of cloth shape or sheet electroconductive component by image processing system; The turning axle that makes said rotary body, rotates with this rotary body and can support in the axle of said rotary body any rotatably and conducted via said electroconductive component with the energising object time by the butt parts; Can be being connected by the end of butt parts with said by the length direction quadrature of butt parts this; And be pre-formed be used to make said electroconductive component deflection when connecting in said end and with the perforation abutting part of said at least one by the otch of butt parts butt and cutting-out portion; Then; Saidly connected said perforation abutting part through making, said energising object and said is switched on via said electroconductive component by the butt parts by the butt parts.
The invention of content 35 records of the present invention is with face and by the cloth shape of butt parts butt or sheet electroconductive component.
The invention of content of the present invention 36 records is in the electroconductive component of content 35 records of the present invention, said electroconductive component deflection and with said by butt parts butt.
The invention of content 37 records of the present invention is in the electroconductive component of content 36 records of the present invention; Said electroconductive component has otch; It can be connected by the butt parts said, and when this is connected by the butt parts, make said electroconductive component deflection and with said by butt parts butt.
The invention of content of the present invention 38 records is that said otch has been formed a plurality of in the electroconductive component of content 37 records of the present invention, said can be when being connected at a plurality of positions and said by butt parts butt by the butt parts.
The invention of content 39 records of the present invention is that said otch is made up of a plurality of first radial incisions that the substantial middle from said electroconductive component is radial extension in the electroconductive component of content 38 records of the present invention.
The invention of content 40 records of the present invention is in the electroconductive component of content 39 records of the present invention; Has pressing component; Its said electroconductive component with have saidly by the part different at different position and different of butt parts butt, pushed to said said electroconductive component by the butt parts.
According to the present invention, can realize and provide a kind of energising mechanism that solves the new rotary body of above-mentioned problem, use the electrifying method and the electroconductive component of picture supporting body unit, handle box, tape cell, fixation unit, sheet material delivery unit, image processing system and the rotary body of this rotary body energising mechanism.If it is then following to lift the effect of main each content of the present invention.
The invention of content 1 to 3 record according to the present invention; Utilize said structure; Can remove metal slip each other, can suppress to produce different sound, prevent the poor flow that causes by suppressing oxidation; And owing to do not need conductive lubricant, so a kind of energising mechanism of cheap small-sized stable rotation body of taking environmental conservation into consideration can be provided.
The invention of content 4 to 10 record has the simple structure of otch through cloth shape or sheet electroconductive component according to the present invention, on the basis of the effect of content 1 to 3 record invention of the present invention, the energising mechanism of the rotary body of guaranteeing to stablize conducting can also be provided.Do not produce in addition and remove effect anti-dandruff and refuse.
The invention of content 11 and 13 records according to the present invention; Has the simple structure of cutting-out portion through cloth shape or sheet electroconductive component; On the basis of the effect that content 1 to 3 record of the present invention is invented; Can also guarantee stable conducting, and only cutting-out portion shape carried out organon, just can high precision adjustment and contacting and butt scope and butt pressure by the butt parts.
The invention that content 12 is put down in writing according to the present invention utilizes said structure, on the basis of the effect that content 4 to 10 records of the present invention are invented, and can also high precision adjustment and contacting and butt scope and butt pressure by the butt parts.
The invention of content 14 records utilizes said structure according to the present invention, can guarantee stable conducting.
The invention of content 15 records utilizes said structure according to the present invention, can realize and provide the picture supporting body unit of content 4 to 10 at least more than one effects of the present invention.
The invention of content 16,17 records according to the present invention; On the basis of the effect that content 15 records of the present invention are invented; In picture supporting body unit, can stablize and guarantee long-time conducting by compress shape or sheet electroconductive component (for example conductive fabric) through coming with pressing component.
The invention of content 18 record according to the present invention in handle box, can have at least more than one of effect of content 15 to 17 record inventions of the present invention.
The invention of content 19 records according to the present invention in image processing system, is put down in writing the effect of inventing through effect or content of the present invention 18 with content 15 to 17 record inventions of the present invention, and stable picture quality can and then be provided.
The invention of content 20,23 record according to the present invention even in belting, also has at least more than one of effect of content 4 to 14 record inventions of the present invention.
The invention of content 21,22 records according to the present invention; On the basis of the effect that content 20,23 records of the present invention are invented; In belting, through coming with pressing component and can stablize and guarantee long-time conducting by compress shape or sheet electroconductive component (for example conductive fabric).
The invention of content 24 records according to the present invention; Have intermediate duplication band as the intermediate duplication body, possess Electrophtography photosensor layer, electrostatic recording dielectric layer and magnetic recording magnetic layer any as the supporting body band with as duplicating in any the belting that duplicates moving belt that transports body, have at least more than one of effect of content 4 to 14 record inventions of the present invention.
The invention of content 25,26 record according to the present invention even in fixing device, also has at least more than one of effect of content 4 to 14 record inventions of the present invention.
The invention of content 27,28 records according to the present invention; On the basis of the effect that content 25,26 records of the present invention are invented; In fixing device, through utilizing pressing component to come and can stablize and guarantee long-time conducting by compress shape or sheet electroconductive component (for example conductive fabric).
The invention of content 29 record according to the present invention even in the sheet material conveyer, also has at least more than one of effect of content 4 to 14 record inventions of the present invention.
The invention of content 30,31 records according to the present invention; On the basis of the effect that content 29 records of the present invention are invented; In the sheet material conveyer, through utilizing pressing component to come and can stablize and guarantee long-time conducting by compress shape or sheet electroconductive component (for example conductive fabric).
The invention of content 32 records according to the present invention; In image processing system, have at least more than one of effect of the sheet material delivery unit of the effect of the fixation unit of the effect of the tape cell of content 20 to 24 each records of the present invention, content of the present invention 25 to 28 each records, content of the present invention 29 to 31 each records.
The invention of content 33 records according to the present invention; Can remove the slip between the metal; Can suppress to produce different sound; Prevent the poor flow that causes by suppressing oxidation, and owing to do not need conductive lubricant, so a kind of energising mechanism of cheap small-sized stable rotation body of taking environmental conservation into consideration can be provided.
The invention of content 34 record according to the present invention can provide a kind of invention of the record than the present invention content 33 more to guarantee to stablize the electrifying method of the rotary body of conducting.
The invention of content 35 and 36 records according to the present invention can realize and provide a kind of effect electroconductive component with content 1 to 3 record invention of the present invention.
The invention of content 37 to 39 records according to the present invention can realize and provide a kind of effect electroconductive component with content 4 to 10 record inventions of the present invention.
The invention of content 40 records according to the present invention can realize and provide a kind of effect electroconductive component with content 16,17,21,22,27,28,30,31 record inventions of the present invention.
Description of drawings
Fig. 1 is that the coloured image that is suitable for embodiment 1 grade forms the whole simple structural drawing of device;
Fig. 2 is the cut-open view that is suitable for the handle box major part of embodiment 1 grade;
Fig. 3 is the stereoscopic figure of the picture supporting body unit of the embodiment of the invention 1 grade;
Fig. 4 is the cut-open view of the major part dissectd the both ends of the picture supporting body unit in embodiment 1 grade in length (axle) direction;
Fig. 5 is shape and the figure of installment state of the ground plate, conductive fabric etc. of expression embodiment 1, is the stereographic map that the expression axle connects state before the conductive fabric;
Fig. 6 is a stereographic map of representing state in the conductive fabric of opening its otch by the touching conductive fabric perforation;
Fig. 7 is the stereographic map of state behind the expression axle perforation conductive fabric;
Fig. 8 is in length (axle) direction side cross sectional view an end of the picture supporting body unit in embodiment 1 grade;
Fig. 9 (a), Fig. 9 (b) are the microscope enlarged photographs (30 times, 100 times) of conductive fabric self;
Figure 10 is the mode chart (100 times) of conductive fabric self;
Figure 11 is in length (axle) direction side cross sectional view an end of the picture supporting body unit in the comparative example;
Figure 12 is that comparative example is as the flange of supporting body unit, the stereoscopic figure around the ground plate;
Figure 13 is the front view of the conductive fabric of expression variation 1;
Figure 14 is the front view of other conductive fabrics of expression variation 1;
Figure 15 is the front view of the comparative example conductive fabric of expression variation 1;
Figure 16 is the front view of the conductive fabric of expression variation 2;
Figure 17 is the front view of the conductive fabric of expression variation 3;
Figure 18 is the front view of the conductive fabric of expression variation 4;
Figure 19 is the front view of the conductive fabric of expression embodiment 1;
Figure 20 is the exploded perspective view of the flange assembly structure of illustrative embodiment 1;
Figure 21 is the figure of the conductive fabric modular construction of illustrative embodiment 1, (a) is that vertical view, (b) are that front view, (c) are that upward view, (d) are right side views;
Figure 22 is the figure of the conductive fabric modular construction of illustrative embodiment 1, (a) is that side view, (b) are rear views;
Figure 23 is the figure of the pressing component shape of illustrative embodiment 1, (a) is that vertical view, (b) are that front view, (c) are right side views;
Figure 24 is the figure of the conductive fabric assembly manufacturing procedure of illustrative embodiment 1;
Figure 25 (a) is to be the stereographic map of the location structure of conductive fabric when flange is installed, (b) same front view in the illustrative embodiment 1;
Figure 26 (a) is that the stereographic map, (b) that install ground plate to flange in the illustrative embodiment 1 are that same front view, (c) are same side views;
Figure 27 is the stereographic map of explanation conductive fabric function and pressing component through hole relation;
Figure 28 is the photo of explanation to the major part of the characteristic of the state of flange installation conductive fabric, pressing component and ground plate;
Figure 29 is the front view of other routine shapes of expression embodiment 1 conductive fabric;
Figure 30 is the front view of the conductive fabric of expression variation 5;
Figure 31 is the front view of the conductive fabric of expression variation 6;
Figure 32 is in length (axle) direction side cross sectional view an end of the picture supporting body unit of variation 6;
Figure 33 (a), Figure 33 (b) are the axle external diameter size of explanation variation 6 and the major part amplification stereogram of conductive fabric coincidence status;
Figure 34 is the front view of the conductive fabric of expression variation 7;
Figure 35 is the front view of the conductive fabric of expression variation 8;
Figure 36 is the front view of other conductive fabrics of expression variation 8;
Figure 37 is the front view of the conductive fabric of expression variation 9;
Figure 38 is the front view of the conductive fabric of expression variation 10;
Figure 39 (a), Figure 39 (b) are the conductive fabric of explanation variation 8 and 10 and the major part amplification stereogram of the state that touches that is coupling;
Figure 40 is the front view of the conductive fabric of expression variation 11;
Figure 41 is the front view of the conductive fabric of expression variation 12;
Figure 42 is the ground structure that obtains via conductive fabric as the conducting of the axle of supporting body unit and backing plate for handle that variation 13 is described, and handle as an end of supporting body unit in length (axle) direction side cross sectional view;
Figure 43 is the ground structure that obtains via conductive fabric as the conducting of the axle of supporting body unit and framework for handle that variation 14 is described, and handle as an end of supporting body unit in length (axle) direction side cross sectional view;
Figure 44 is the ground structure that obtains via the conductive fabric that does not have otch etc. as the conducting of the axle of supporting body unit and framework for handle that variation 15 is described, and handle as an end of supporting body unit in length (axle) direction side cross sectional view;
Figure 45 is the simple front view of the intermediate duplication belting of expression embodiment 2;
Figure 46 is in length (axle) direction side cross sectional view an end of the intermediate duplication tape cell of embodiment 2;
Figure 47 is in length (axle) direction side cross sectional view an end of the intermediate duplication tape cell of variation 16;
Figure 48 is the simple front view of the fixing device of expression embodiment 3;
Figure 49 is in length (axle) direction side cross sectional view an end of the fixation unit of embodiment 3;
Figure 50 is the simple front view of the fixing device of expression variation 17;
Figure 51 is in length (axle) direction side cross sectional view an end of the fixation unit of variation 17;
Figure 52 (a) is the stereographic map of the sheet material delivery unit major part of embodiment 4, Figure 52 (b) be with an end of unit in length (axle) direction side cross sectional view;
Figure 53 is in length (axle) direction side cross sectional view an end of the sheet material delivery unit of embodiment 5;
Figure 54 (a) is the front view of lug boss position relation of crimping contact portion (claw portion) and flange of ground plate that is used for the flange assembly of illustrative embodiment 1; Figure 54 (b) is used for explaining flange assembly when photoreceptor inside is pressed into the major part exploded perspective view of the load that the crimping contact portion (claw portion) of ground plate receives;
Figure 55 (a) representes that the cut-open view of the flange assembly of embodiment 1 state before photoreceptor inside is pressed into Figure 55 (b) is that expression is a cut-open view that is pressed into the back state with flange assembly to photoreceptor inside;
Figure 56 (a) is the front view of metallic brush, and Figure 56 (b) is the side view of metallic brush;
Figure 57 (a) is that explanation makes the counterrotating axle of metallic brush and the parallel major part front view that touches method, and Figure 57 (b) is the side view of Figure 57 (a);
Figure 58 (a) is that explanation makes the counterrotating axle of metallic brush and quadrature touches the major part front view of method, and Figure 58 (b) is the side view of Figure 58 (a);
Figure 59 (a) is that Figure 59 (b) is the front view of Figure 59 (a) the exploded perspective view of metallic brush to the structure of flange assembling;
Figure 60 A is used for explaining the contact position of metallic brush metal fibre part and the 200 power microscope enlarged photographs at position;
(a) of Figure 60 B is used to explain the contact position of all metal fibres when equidirectional and the mode chart at position, (b) is contact position and the mode chart at position that is used to explain when a metal fibre tilts;
Figure 61 (a) be used to explain the conductive fabric contact by the horizontal contact position of butt parts and the 50 power microscope photos at position, (b) be the microscope enlarged photograph (200 times) of (a);
Figure 62 (a) be the explanation contact with metallic brush by the microphotograph of the vertical contact of butt parts; (b) be the microphotograph that amplifies to (a); (c) to be explanation contact with conductive fabric that the present invention uses by the microphotograph of the vertical contact of butt parts, (d) is the microphotograph of handle (c) amplification;
Figure 63 A is the microscope enlarged photograph of conductive fabric;
Figure 63 B is the pattern cut-open view of each cross-sectional image of presentation graphs 63A;
Figure 64 (a) is expression metallic brush and the scope touched and the key diagram at position of being coupling, and (b) is the scope touched of expression conductive fabric and being coupling and the key diagram at position;
Figure 65 (a) is the exploded perspective view of illustrative embodiment 2 flange modular constructions, is the figure of illustrative embodiment 2 flange modular constructions (b), is the front view that the preceding state of ground plate is installed in expression;
Figure 66 (a) and (b), (c) are with a part of dissecing flange and the photo of representing with stereographic map the assembling of the flange assembly among the embodiment 2 passing state;
Figure 67 (a) be only represent conductive fabric the figure of thickness by three kinds of test films of the band PET sheet conductive fabric of two kinds of variations (measuring article) shape and size, (b) be the figure that the same test film of explanation (measuring article) is pushed load mensuration state;
Figure 68 pushes load to three kinds of test films (measuring article) to measure the chart that the result gathers;
Figure 69 pushes load to three kinds of test films (measuring article) to measure the curve that the result gathers;
Figure 70 is that explanation test film (measuring article) is pushed the simple stereographic map that state is measured in load.
Embodiment
Below, comprise the embodiment of the present invention (below be called example) of embodiment with reference to description of drawings.For the structural detail (parts and constitutional detail) that has identical function and shape etc. in each example etc. etc., only otherwise can confuse, then pay identical symbol.In order to seek simple and clearization of accompanying drawing and explanation, even scheme represented structural detail, the structural detail so long as not needing among this figure to specify then also suitably omits sometimes.
(example 1)
At first, explain that the coloured image of the electrofax mode that is suitable for example 1 of the present invention forms the one-piece construction and the action of device 50 with reference to Fig. 1.Fig. 1 is the general profile chart that the expression coloured image forms device 50 inner structures.
As shown in the drawing; Coloured image forms device 50 in the substantial middle portion as the body frame that becomes machine frame 51 of device body; Sequentially be set side by side with four handle box 58K, 58C, 58M, 58Y from right to left as the handle box of composing images formation portion, dispose at the upside of handle box 58K, 58C, 58M, 58Y and be used for forming the exposure device 57 of mechanism and exposure mechanism as what supporting body 1K, 1C, 1M, 1Y formed latent image as latent image at each.In illustrated example, each is made up of photoreceptor as supporting body 1K, 1C, 1M, 1Y, is formed with black toner picture, black toner picture, pinkish red toner picture, yellow toner picture respectively on the surface of photoreceptor.
Below; Structure is same because the color of the toner that handle box 58K, 58C, 58M, 58Y just use as developer is different with formed toner picture, so its blanket explanation the time, describe with the handle box 58 that removes its color symbol of expression.Likewise, when summing up explanation, to remove describing of its color symbol of expression as supporting body 1 as supporting body 1K, 1C, 1M, 1Y.
Know clearly like Fig. 1 and Fig. 2 and to show that handle box 58 comprises: state picture supporting body unit 10 that picture supporting body 1 grade constitutes after having, as the charged roller 11 of the formation Charging system of charged mechanism, as the cleaning balde 13 of the formation cleaning device of cleaning mechanism, as the developer roll 12 of the formation developing apparatus of developing mechanism, the framework 14 as the box-shaped body support unit of their one supporting.Handle box 58 body frame 51 that relative coloured image forms device 50 via framework 14 can freely be loaded and unloaded.Framework 14 has in Fig. 2 and has set a pair of supporting side plate (not shown) in the front of paper side and rear portion side.
Charged roller 11 is to the outer surface crimping of picture supporting body 1; Through driven on one side rotation utilizes not shown high-voltage power supply to apply DC on one side or at the bias voltage of the overlapping AC of DC as the rotation of supporting body 1, make as supporting body 1 with the surface potential of going up (for example-200～-1000V).
The developing apparatus that possesses developer roll 12 grades is a single composition contact developer, the regulation development bias voltage that utilizes not shown high-voltage power supply to supply with, and the electrostatic latent image that forms at picture supporting body 1 as toner picture developmentization.
Downside at handle box 58 is provided with the ring-type intermediate duplication band 53 as the intermediate duplication body that looks like the toner as duplicating image to carry and transport.Intermediate duplication band 53 is erected at as the double as secondary of a plurality of rotary parts and duplicates the driven roller 55, metal cleansing phase pair roller 59 of opposed roller, once duplicates the driven voller 56 of roller 54, double as idler roller, utilizes the driving motor as driving mechanism (not shown) that links with driven roller 55 to come via driven roller 55 by direction of arrow driven in rotation in figure via driving force transmission mechanism such as not shown gear and band.In above-mentioned a plurality of rotary parts, driven roller 55 is driven in rotation parts, and driven voller 56 is driven rotary parts.
As the band tension force of paying to intermediate duplication band 53, be to utilize the bearing portion pressurization of spring (not shown) to driven voller 56 both sides.Above-mentioned each roller that sets up intermediate duplication band 53 is by not shown a pair of intermediate duplication tape cell side plate, begins supporting from the both sides of middle dubs 53.
As the material of intermediate duplication band 53 and use the band that is dispersed with the membranaceous ring-type of resin of conductive materials such as carbon black to PVDF (vinylidene), ETFE (ethylene-tetrafluoroethylene copolymer), PI (polyimide), PC (polycarbonate), TPE (thermoplastic elastomer) etc.
The lower position that joins as supporting body 1 and intermediate duplication band 53 of handle box 58 be respectively arranged with constitute a reproducing unit once duplicate roller 54.Can use current-carrying plate and conductive sponge roller, metallic roll etc. as once duplicating roller 54, and this example example is to use metallic roll, look like supporting body 1 relatively and bias configuration in the vertical direction of intermediate duplication band 53 moving directions.Utilize not shown independent high-voltage power supply and relatively as supporting body 1 to once duplicate roller 54 commonly apply regulation replica biased (for example+500～+ 1000V); Electric field is duplicated in formation via intermediate duplication band 53; Owing to as supporting body 1 and 53 generations of intermediate duplication band potential difference (PD) is being arranged, so duplicated to intermediate duplication band 53 at each the colour toners picture that forms as supporting body 1 surface.
Manage box 58 throughout and the toner picture of these each colors duplicates to intermediate duplication band 53 in order, form the multicolour colour toners picture that on intermediate duplication band 53, overlaps monotone toner picture.
The downside of intermediate duplication band 53 dispose the accumulation that constitutes paper feeding device accommodate duplicating material such as paper and OHP sheet and sheet-shaped recording medium (below be called " sheet material ") s to carton 60.The feed roll 61 that is configured paper feeding device is separated into the sheet material S that carries out paper feeding one by one with not shown sheet separation mechanism; Duplicate between the roller 63 by to fixing device 64 guiding through intermediate duplication band 53 with as the secondary of secondary reproducing unit via driven roller 55, utilize the toner picture heat and pressure to sheet material S photographic fixing.
Temporarily stop for the sheet material S that send at alignment roller 62 from feed roll 61 as aligning guide; After correct tilt deviation etc.; Make the monochrome or the color toner that form on intermediate duplication band 53 surfaces meet the time of arrival secondary duplicating position and duplicate roller 63 supplies to secondary as leading section; Monochrome that forms on intermediate duplication band 53 surfaces or color toner picture duplicate roller 63 at secondary and are applied in noble potential; Produce potential difference (PD) through duplicating between the roller 63, and look like toners that form on intermediate duplication band 53 surfaces to copy on the sheet material S at intermediate duplication band 53 and secondary.
Duplicate roller 63 as secondary, for example constitute, for example can use the conductive roll of EPDM system and the roller of electronic conduction form etc. through the elastic body that on the metal mandrel axles such as SUS of diameter 6mm, covers conductive material.
The sheet material S that is replicated the unfixing toner picture utilize longitudinal type paper feeding route driven roller (secondary duplicates opposed roller) 55 curvature and peeled off from middle dubs 53; By fixing device 64 the toner picture after sheet material S fusing photographic fixing; Utilize to constitute exit roller 65 and discharge tray 68 discharges to being configured in body frame 51 above of paper delivery device for sheet, and arrange paper.
After sheet material S duplicates the toner picture on intermediate duplication band 53 surface residual residue toner scraped by the cleaning balde 66a of intermediate duplication body clearing apparatus 66 and get cleaning, and transport the path and reclaim to toner recovery device 67 through not shown toner.The toner that the intermediate duplication band 53 that has been cleaned is prepared next time looks like to duplicate.
Material as cleaning balde 66a is for example used urethane rubber, and intermediate duplication band 53 is relative butts relatively.Want application of lubricating during in assembling at least one side of the edge part of part suitable and cleaning balde 66a with the cleaning holding part of intermediate duplication band 53; Prevent to roll, and preferably form the restraining barrier to improve clean-up performance at the cleaning holding part at the scraper plate of cleaning holding part.
As shown in Figure 1, coloured image forms device 50 and transports the path to the sheet material from the paper feeding of sheet material S to row's paper as much as possible and simplify, and prevents to transport paperboard midway through increasing the radius-of-curvature that this sheet material transports the path, can improve reliability.Solution when producing paperboard is handled operation and also can simply be carried out, and also can tackle for the color electronic camera of the multiple recording medium mode of using ground paper etc.
This example transports the path to sheet material and forms roughly circular-arc; Be configured in the inboard that sheet material transports the path to intermediate duplication band 53, handle box 58 and exposure device 57; Can effectively utilize body frame 51 interior spaces and miniaturization; And transport the path to sheet material and simply change, image surface is discharged sheet material S downwards.
Utilize said structure and can transport the path to sheet material and simply change; And owing to be configured in the inboard that sheet material transports the path to the structural unit of the overwhelming majority; So sheet material transports the body frame 51 of path near the outside; It is open to transport the path to sheet material easily, also becomes simple so operation is handled in the solution when producing paperboard.Make image surface downwards discharging on the discharge tray 68 of sheet material S above body frame 51, so, have from the upside to the downside and arrange the advantage of piling up according to print order being image surface side when up taking out being deposited in sheet material S on the discharge tray 68.
Make the right side of Fig. 1 become the front; The substantial middle of transporting the path at sheet material is cut apart and is set at the right side and opens and closes cap unit (not shown) freely; Owing to be to open this cap unit and can make sheet material transport the structure that expose in the path, also change is simple so operation is handled in the solution when producing paperboard.
The explanation electrophotographic image forms and handles below.Fig. 2 is the cut-open view of handle box 58.
In Fig. 1 and Fig. 2, be cylindric as supporting body 1, utilize the not shown drive unit be arranged on body frame 51 and by direction of arrow driven in rotation in figure, its surperficial photographic layer 1B is because charged roller 11 and by with going up same noble potential.Same charged photographic layer 1B is the image information of exposure device 57 and being made public by light (for example laser) L according to form mechanism from latent image.Utilize this exposure and make the electrostatic latent image that constitutes in electronegative potential portion that photographic layer 1B has been formed with by potential decay and initialized noble potential portion.Then; When the electronegative potential portion (or noble potential portion) of this electrostatic latent image arrives as the relative position of supporting body 1 with developer roll 12; Then toner shifts to picture supporting body 1 from the developer roll 12 of its surface bears toner thin layer, forms the toner picture (visible image) as reproducible image on the surface of picture supporting body 1.When being rotated as supporting body 1, then above-mentioned toner looks like to utilize and shown in Figure 1ly once duplicates roller 54 and be copied to intermediate duplication band 53.At this moment, exist on as supporting body 1 not to be copied to intermediate duplication band 53 and residual to duplicate residual toner, this duplicates residual toner and is cleaned scraper plate 13 from removing as supporting body 1.Be provided with not shown neutralizer more relying on as supporting body 1 sense of rotation downstream than this cleaning balde 13.Remove as the electric charge of supporting body 1 remained on surface at this neutralizer handle.Neutralizer be provided with above-mentioned charged roller 11 as supporting body 1 sense of rotation downstream, utilize charged roller 11 by once more with the noble potential of going up as supporting body 1.
With reference to Fig. 3～Figure 10, with Figure 11 and shown in Figure 12 comparative example be existing as supporting body unit 500 compare on one side, explain that on one side this example constitutes the picture supporting body unit 10 and the structure member thereof of handle box 58.Among Fig. 3～Fig. 8, this example uses conductive fabric that two structure members of picture supporting body unit 10 are promptly switched on axle 4 as the conductive base material 1A of supporting body (photoreceptor) 1, for example explains with the example of ground connection formula conducting.The picture supporting body unit 10 of this example at first is described.
Fig. 3 is the stereoscopic figure of picture supporting body unit 10; Fig. 4 is the figure that dissects at its length direction (axially) as the both ends of supporting body unit 10; The parts as supporting body 1 periphery as beyond the supporting body unit 10 have also been represented simultaneously, but have been omitted the diagram of ground plate 5, conductive fabric 6 and pressing component 7.Fig. 5～Fig. 7 is the shape of expression ground plate 5, conductive fabric 6 and the stereographic map that an axle 4 conductive cloth 6 insert the front and back states.Fig. 8 is the figure that dissects at its length direction (axially) as an end of supporting body unit 10, and expression is as the shape and the configuration status of supporting body 1, flange 2, ground plate 5, conductive fabric 6 and pressing component 7.Fig. 9 (a), Fig. 9 (b) are the microscope enlarged photographs (30 times, 100 times) of conductive fabric 6 self.Figure 10 is the mode chart (100 times) of conductive fabric 6 self.
Like Fig. 3～shown in Figure 8, mainly comprise as supporting body unit 10: as supporting body 1, it has the photoreceptor of photographic layer 1B to constitute by possessing on the surface that becomes cylindric conductive base material 1A; Flange 2, it is fixed on an end of picture supporting body 1 as vibrating part; Gear 3, it is fixed on the other end of picture supporting body 1; Axle 4, it is as being supported rotatably as supporting body 1 through the central part that connects flange 2 and gear 3 by the butt parts; Conductive fabric 6, it can be inserted by axle 4 as the electroconductive component of cloth shape and connect, and possess make self deflection when being connected by axle 4 and with the otch 6a and the pliability of axle 4 butts; Ground plate 5, it makes its base end part and conductive fabric 6 contact and be installed in flange 2 as the metallic electroconductive component with energising (ground connection) parts, and leading section is fixed on the inwall of conductive base material 1A; Pressing component 7, conductive fabric 6 is pushed on its floor 5 that connects.
As shown in Figure 4, as supporting body unit 10 around be equipped with: the supporting as supporting body unit 10 the axle 4 both ends framework 14, make the axle 4 the energising, for example ground wire and ground connection after state conducting mechanism.
Like Fig. 4 and shown in Figure 8, can be supported rotatably by hole 2a that forms central part and the axle 4 that connects at the hole 3a that the central part of gear 3 forms at flange 2 as supporting body 1.Axle 4 is for example formed by metals such as electric conductivity special steels; Perhaps be applied in electric conductivity coating and handle,, utilize stopping wheel etc. to prevent that rotary part 9 from suppressing the rotation situation of axle 4 by framework 14 its both ends of supporting of handle box 58 shown in Figure 2; Among Fig. 4, prevent coming off to the left.And prevent that by not shown miscellaneous part axle 4 is in axial coming off fully in the opposition side end that prevents rotary part 9.
When the body frame 51 that forms device 50 to the handle box 58 of Fig. 1 and Fig. 2 to coloured image is installed; In Fig. 3 and Fig. 4,, the plate (not shown) that is installed in body frame 51 and for example stainless steel electrical ground makes axle 4 ground connection through being contacted with the end of conductive shaft 4.As stated, be installed in body frame 51 and plate electrical ground (not shown) formation and make axle 4 conducting mechanism electrical ground.
Like Fig. 2 and shown in Figure 8, be the structure that the photographic layer 1B that is made up of selenium etc. is set on the surface of the conductive base material 1A that forms by aluminium etc. as supporting body 1.In Fig. 2; Utilizing the Charging system that is configured in around it as supporting body 1 relative photographic layer 1B is that charged roller 11, developing apparatus are that developer roll 12, a reproducing unit promptly once duplicate roller 54 (Fig. 2 is not shown; With reference to Fig. 1) and carry out actions such as duplicating of charged, development, toner picture repeatedly in order, and finally duplicate the toner picture to sheet material S such as paper via intermediate duplication band 53 and to make the sheet material that is formed with image.In this example, be the equal of energising (ground connection) object (below identical) as the conductive base material 1A of supporting body 1.
In as supporting body 1, carry out charged action repeatedly; Because its electrified voltage is high; So in order to ensure the conducting between picture supporting body 1 that is driven in rotation and the axle 4; The fugacious minimizing simultaneously of static capacity vibrated; Prevent the oxidation that produces different sound and caused by the slip between the metal, this example is through forming conductive fabric 6, the ground plate 5 and the pressing component 7 that are formed by metal spring material and dispose with following record ground as stated, and can prevent the image generation unusually, the oxidation of the different sound of generation and metallic parts etc.
Shown in Fig. 3, Fig. 4 and Fig. 8 etc.; Flange 2 has: by axle 4 insert and the said hole 2a of supporting, be set at its inboard and the rotation of edge and picture supporting body 1 promptly the parallel said installed surface 2b of the face of the central axis quadrature of axle 4, at the boss at outstanding two positions that form of installed surface 2b (with reference to the boss 2c of the flange 2 of Figure 12), they are integrally formed by electrical insulating property resin that can hot riveting.Flange 2 is being pressed into by the inwall 1Aa of the electrical matrix material 1A of guide when chimeric, is to utilize suitable fixed mechanism and fixedly secured the end at picture supporting body 1.This suitable fixed mechanism also comprise utilize ground plate 5 after state a pair of crimping contact 5b of portion and come relative conductive base material 1A to carry out crimping to fix.Flange 2 has been represented detailed shape by Fig. 4 and Fig. 8, is not obstacle but need only particular structural of the present invention, the then simply expression among the figure beyond above-mentioned for simple and clearization of seeking figure.
Like Fig. 5～shown in Figure 7; Ground plate 5 is roughly squares of four jiaos of band circular arcs; Have: through hole 5a, a plurality of crimping contact 5b of portion, a plurality of boss fixed claw 5c and flat part 5p, integrally formed by the thin plate of phosphor bronze or stainless steel etc. with the spring material of for example plate thickness 0.1～0.2mm.Ground plate 5 has: through hole 5a, and it is used for not contacting with axle 4; Flat part 5p, its base end part contacts with conductive fabric 6, and be as via conductive fabric 6 with pressing component 7 and as after be installed in the portion that is mounted of the installed surface 2b of flange 2 stating at two positions; A plurality of (this example is two) crimping contact 5b of portion, its part from the electrical matrix material 1A of flat part guide 5p radially extend and under the state of the inwall 1Aa that is deep into conductive base material 1A and utilize the elastic force of spring to be crimped fixing (substantial fixing); Boss fixed claw 5c, it is mounted fixing with a plurality of boss that are formed on flange 2 (this example is two, and diagram is omitted, with reference to the boss 2c of Figure 12 flange 2) elasticity engaging.The diameter of the through hole 5a that opens wide at ground plate 5 is formed greatlyyer than the external diameter of axle 4 in order not contact with axle 4.
The state that its leading section of the crimping contact 5b of portion is formed on the inwall 1Aa that is deep into conductive base material 1A can be crimped fixing sharp-pointed leg-of-mutton shape down.Two boss fixed claw 5c are used for the benchmark of ground plate 5 in the two-dimensional directional location.Utilize these boss fixed claw 5c and flat part 5p and be configured in inside to ground plate 5 opposing flanges 2 in the three-dimensional location as supporting body 1.
After engaging each boss (with reference to the boss 2c of Figure 12 flange 2) with each boss fixed claw 5c elasticity and fixing, also can append by the processing that fixes the hot riveting of the leading section of each boss 2c (head) heat welded maintenance.
Conductive fabric is described.Said conductive fabric also is called removes electric cloth; By constituting the cloth shape material (conducting fibre) of at least a fiber of pet fiber, nylon fiber and dacron and nickel and copper braiding; Have electric conductivity and have suitable lubricity; Even contact also with the slip object and can not produce unusual sound and oxidation, can guarantee stable conducting.Can remove between metal when sliding to reduce sliding resistance is the coating electric conductivity lubricant of purpose, can also alleviate environmental loads.
Be illustrated in Fig. 9 (a) to the microscope enlarged photograph of the actual conductive fabric self that uses of this example: 30 times, Fig. 9 (b): 100 times.Figure 10 representes the mode chart (100 times) of the conductive fabric self of actual use.As understanding from two figure, conductive fabric is to be woven into conducting fibre rope form and to become fibrous bundle, and then forms clathrate to fibrous bundle.The resistance value of this conductive fabric is less than 0.01 Ω, and thickness is 0.25mm.
The conductive fabric 6 of this example has the otch 6a that is connected by axle 4, and ground plate 5 contacts in the part beyond the otch 6a with conductive fabric 6.This example example makes the circumferential profile shape of conductive fabric 6 form greatlyyer than through hole 5a at ground plate 5 dorsal parts of Fig. 5～Fig. 8, joins in the zone that overlaps with the flat part 5p of this ground plate 5.Thus, make ground plate 5 and conductive fabric 6 conductings.
Shown in the imaginary line of Fig. 5 and Fig. 6; The conductive fabric 6 of this example is crosswise to being formed a plurality of otch 6a radially, and the external diameter shape 4a of the cross-sectional shape shape of this otch 6a when connecting as axle 4 (below be called " axle external diameter shape 4a ") be the center intersection.When axle external diameter shape 4a is in the position overlapping with conductive fabric 6, then expression axle 4 contacts and butt (each variation afterwards stated and embodiment 1 etc. are too) with conductive fabric 6.In order to make axle 4 perforation easy, the end of each otch 6a is extended and is formed near the outside of external diameter shape 4a (each variation afterwards stated and embodiment 1 etc. are too).Fig. 8 states the situation that conductive fabric 6A～6D1～6M (following record is " 6A～6M ") of variation 1～12 and embodiment 1 can be suitable for after the conductive fabric 6 of example 1 has been put down in writing in the lump.
The present invention actively utilizes the pliability of conductive fabric in order to solve above-mentioned problem; Because the main exercise question of shape conduct that comprises " otch " and " cutting-out portion " that forms at conductive fabric; So item about the embodiment such as memory and thickness of expression degree of flexibility; The energising of the rotary body that is suitable for, for example meeting the design item that each concrete example of earthing mechanism sets will be considered, and specifies it and omits.
For flexible with what do not have effective state to come actively to utilize conductive fabric so far to be had; Created: this example is such, and not produce what remove anti-dandruff and refuse only be " otch ", produce " cutting-out portion " (comprising otch and punching etc.) of removing anti-dandruff and refuse, do not form the structure of " otch " and " cutting-out portion " as opposite extreme situations, various forms and variation such as their appropriate combination, states after then gathering about these.
Pressing component 7 is made up of the non-metal elastomers that comprises rubber, sponge, for example can use foamed polyurethane rubber etc.
As stated, become conducting, so the flat part 5p (base end part) of ground plate 5 just is the equal of energising (ground connection) object side with conductive base material 1A through the inwall 1Aa that is fixed on the crimping contact 5b of portion of ground plate 5 conductive base material 1A.Therefore, this example is that to make the part of conductive fabric 6 and energising (ground connection) object side be the flat part 5p butt of ground plate 5, makes the structure of another part with the axle 4 deflection butts of conductive fabric 6.
With reference to Fig. 5～Fig. 8, the example as supporting body unit 10 assemble methods is described.At first; The state of clamping at the installed surface 2b of opposing flanges 2 and pressing component 7 and conductive fabric 6 (as embodiment 1 as after state; Constitute pressing component 7 and conductive fabric 6 as group body (conductive fabric assembly) in advance) under; Be fixed each boss of flange 2 (not shown) each boss fixed claw 5c elasticity, fixedly remain on flange 2 to ground plate 5 with ground plate 5 with reference to the boss 2c of Figure 12; At this moment, the position with the crimping fixed part 5b of ground plate 5 is to fix in the position that makes its phase place become about 90 degree.Then; Under the state (conductive fabric assembly) of clamping pressing component 7 and conductive fabric 6, for the inwall 1Aa that utilizes the 2 groups of bodies of flange (flange assembly) that are fixed with ground plate 5 not shown flange to push the anchor clamps electrical matrix material 1A of guide such as (instruments) to fixing as an end of supporting body 1 is pressed into chimeric.At this moment; Owing to form the outer circumference end diameter (external diameter of a circle) of the crimping contact 5b of portion of ground plate 5 suitably greatlyyer than the diameter (internal diameter) of the inwall 1Aa of conductive base material 1A; So the front end of the crimping contact 5b of portion is deep into one side, inwall 1Aa ground elastic deformation of conductive base material 1A and is crimped on one side; Thus, be securely fixed in the inside of picture supporting body 1.
Then; In Fig. 5～Fig. 7, be fixed on 2 groups of bodies of flange (flange assembly) of picture supporting body 1 inside relatively, when in Fig. 5, inserting the axle of representing by imaginary line 4 from the lateral butt direction 8 of flange 2; After that kind as shown in Figure 8 has connected the hole 2a of flange 2; Push conductive fabric 6 through the front end of axle 4 that kind as shown in Figure 6 otch 6a is opened, and then when inserting axle 4 to butt direction 8, then as shown in Figure 7; Be pressed expansion and connecting of the otch 6a that forms at conductive fabric 6; At this moment, with the intersection point part of the otch 6a of conductive fabric 6 to the state of butt direction 8 (following also be called " direction of insertion 8 ") the equidirectional deflection of axle 4 under, become with spools 4 and contact and butt at a plurality of positions.
Such as stated fixing to flange 2 ground plate 5, conductive fabric 6 and pressing component 7; Embed flange 2 and be pressed into to inboard as supporting body 1, can be through conductive base material 1A is contacted respectively with axle 4 with conductive fabric 6, conductive fabric 6 with ground plate 5, ground plate 5 at last conductive base material 1A and axle 4 conductings.At this moment; As the contact method of ground plate 5 with conductive fabric 6; Be configuration pressing component 7 between flange 2 and conductive fabric 6, and then make the distortion of pressing component 7 elastic compression with pressing component 7, can make conductive fabric 6 and ground plate 5 butt stably through utilizing ground plate 5 to push conductive fabric 6.Thus, can stablize and guarantee long-time conducting.
Among Fig. 3 and Fig. 4; Because the driving force transferring elements meshed gears such as gear row 3 that link with not shown drive unit are transmitted the rotary driving force that above-mentioned drive unit is arranged; So be driven to the direction of arrow rotation among Fig. 1 and Fig. 2 as supporting body 1; Ground plate 5 is also with the direction of arrow rotation in Fig. 1 and Fig. 2 of flange 2, conductive fabric 6 and pressing component 7, on one side the sliding contact on one side on the outer peripheral face of axle 4 of the flexed portion of conductive fabric 6 is rotated.At this moment because conductive fabric 6 has electric conductivity and has suitable lubricity, so even with the slip object promptly axle 4 contact also and can not produce unusual sound and oxidation, can guarantee stable conducting for a long time.Can remove between metal when sliding to reduce the coating conductive lubricant that sliding resistance is a purpose (for example then state electric conductivity railway grease that comparative example uses etc.); So can also alleviate environmental loads, can realize and provide coloured image to form device 50 for environmental protection also good picture supporting body unit 10, handle box 58 and Fig. 1.
For a conductive fabric 6 and axle 4 contact, be can access through conductive fabric 6 self deflection with axle 4 suitable contact pressures, and its shape only is on conductive fabric 6, to be added with otch 6a this very simply processes and just can obtain above-mentioned performance with simple shape.Conductive fabric 6 contains metal, but this is not a main material, so can not produce the poor flow that existing problem is promptly caused by unusual sound and oxidation.
Utilize said structure and conductive fabric 6 particularly shown in Figure 7 otch 6a part and with the contact condition of axle 4; Contact portion with axle 4 among the otch 6a of conductive fabric 6 can access appropriate rigidity; Be difficult to toppling over contacting of axle 4 direction in the opposite direction, and diminish with the contact site width of axle 4 along with going to a center 4c, contact is pressed and is reduced; Therefore can access the energising of low load, for example ground structure.The shape of contact site is root expansion and attenuating along with going to leading section, and the upright advantage that bends of being difficult to by force with 4 soft a contact of leading section is arranged.
The shape of ground plate, conductive fabric, pressing component and installation and their assembling (parts assembling) state after supplementary notes in further detail among the embodiment 1 that states.After the embodiment that states 1 and this example relatively, only used the different conductive fabric 6D1 of otch 6a quantity with the conductive fabric 6 of this example, also can be suitable for this example certainly.Conductive fabric 6 for fear of with this example confuses, after the embodiment 1 that states describe.
Be not limited thereto as supporting body unit 10, only otherwise expect the advantage of configuration pressing component 7 and effect so far, then also can be pressing component 7 from removing as supporting body unit 10.That is, if when borrowing Fig. 8 to explain, be also can remove pressing component 7 from this figure, the state of only clamping conductive fabric 6 with the installed surface 2b of opposing flanges 2 fixes and keeps ground plate 5.
(comparative example of example 1)
Below, with reference to Figure 11 and Figure 12, existing picture supporting body unit 500 is described as the comparative example of example 1.Figure 11 is the figure that dissects at length direction (axially) as the both ends of supporting body unit 500, and expression is as shape and the configuration status of supporting body 1, flange 2, ground plate 5X.What Figure 12 represented is the stereographic map that the state of setting is installed ground plate 5X in expression to flange 2 before hot riveting.
This comparative example promptly describes two structure members as supporting body unit 500 to use in Figure 11 and Figure 12 as the conductive base material 1A of supporting body (photoreceptor) 1 and the structure example of the metallic contact of the metal existing ground plate conducting of axle 4 usefulness.
Like Figure 11 and shown in Figure 12, existing as the comparing of supporting body unit 500 and example 1 as supporting body unit 10, mainly at the point of removing conductive fabric 6 and pressing component 7 with replacement ground plate 5 and the point of use ground plate 5X is different.Outside this difference, are same structures then as supporting body unit 500 and as supporting body unit 10.
Like Figure 11 and shown in Figure 12; Ground plate 5X has two crimping contact portion 5bs, the 5b same with ground plate 5; And have ground plate 5 unexistent two hole 5Xa (the hole 5Xa that only represented upside at Figure 12 that form at flat part 5Xp; And the slotted hole of downside be blocked cannot see), bend 5Xc, 5Xc, contact site 5Xd, 5Xd, be by integrally formed with the same spring material of ground plate 5.
Ground plate 5X compares with ground plate 5; Possess just like after state such at two positions directly to the fixing flat part 5Xp of the installed surface 2b of flange 2; And possess and be formed on from flat part 5Xp along axle 4 crooked bend 5Xc, the 5Xc leading section of length direction; And the overshooting shape contact site 5Xd, the 5Xd that contact and slide with the outer peripheral face of axle 4 have the shape that conducts conductive base material 1A and axle 4 as supporting body 1 therefrom.Except above-mentioned difference, the ground plate 5 of ground plate 5X and example 1 is same.
Ground plate 5X is embedded in two boss 2c (boss 2c that has only represented upside at Figure 12 of the installed surface 2b of flange 2 at handle; And the boss of downside be blocked cannot see) to two hole 5Xa (proper circle shape hole 5Xa that has only represented upside at Fig. 8; And the slotted hole of downside be blocked cannot see) embed after; For example, come to carry out three-dimensional location and fixing the maintenance at the installed surface 2b of flange 2 through its front end head hot riveting.
Among Figure 11; Picture supporting body 1 and example 1 are likewise; Because the driving force drive disk assembly meshed gears such as gear row 3 that link with not shown drive unit are transmitted the rotary driving force that above-mentioned drive unit is arranged; So likewise be driven to the direction of arrow rotation among Fig. 1 and Fig. 2 with example 1; Ground plate 5X is also with the direction of arrow rotation of flange 2 in Fig. 2; The bend 5Xc at two relative positions, 5Xc be on one side because the elasticity of spring material and deflection, makes contact site 5Xd, 5Xd go up sliding contact and rotate at the conductive lubricant that outer peripheral face was coated with (not shown) of axle 4 on one side, guarantees the conducting as the conductive base material 1A of supporting body 1 and spools 4.For example can use electric conductivity railway grease etc. as conductive lubricant.
As stated,, axle 4 looks like supporting body 1 rotation, so be that the relative axle 4 of ground plate 5X is rotated slip always owing to being fixed.So produce different sound by the slip between the metal sometimes and cause the generation poor flow by burning.Prevent strategy as it; The method of oriented ground plate 5X and axle 4 contact site coating conductive lubricant (for example electric conductivity railway grease etc.); But the contact point place of conductive lubricant between metal parts pushed aside along with the increase of sliding time; So very effective, but the problem points that does not reach basic solution is arranged at the slip initial stage.
To this, in example 1, be the new method of application of actively utilizing the conductive fabric of conductive fabric flexural property, promptly only carry out forming very simply processing of otch 6a and use at conductive fabric 6, just can address the above problem a little at all.
According to this comparative example; Ground plate 5X is only by 2 of hot riveting and be fixed on the state of flange 2; To 1 assembling of picture supporting body, the crimping contact 5b of portion serves as the flange after the hot riveting 2 to the fixing effect in an end of picture supporting body 1 the ground plate 5X after this hot riveting and flange 2 (below be called " flange 2 after the hot riveting ").Therefore; Compared with techniques with patent documentation 3 records; Can be in the few rivet hot contact of ground plate 5 and the held stationary of the flange 2 after the crimping fixed point as supporting body 1 inwall obtains hot riveting; So ground plate 5X increases with the fixing point of picture supporting body 1 inwall crimping, need not increase counting of hot riveting.Therefore, can reduce the load of flange 2 when the end as supporting body 1 is pressed into after the hot riveting, have to prevent part distortion and damaged advantage.
The following various variation of the example 1 of " otch " form and the shape of explanation conductive fabric.
(variation 1)
With reference to Figure 13～Figure 15 variation 1 is described.The conductive fabric 6A of variation 1 and the conductive fabric 6 of example 1 only are otch 6a is configured to the shape of such wave molding of repeatedly crosscut or broken line at axle external diameter shape 4a some differences more then like Figure 13, shown in Figure 14.The end of otch 6a and the portion that returns extend near the outside of external diameter shape 4a in order to be connected by axle easily.
According to the conductive fabric 6A of variation 1, compare with the conductive fabric 6X with simple otch 6a shown in Figure 15, can be when being connected at a plurality of positions by axle butt, that is, can access more contact point, therefore, can guarantee stable conducting.Owing to likewise can only have contact site with the conductive fabric 6 of example 1, add the advantage that does not produce man-hour except that anti-dandruff and refuse so also have at conductive fabric 6A at otch 6a.
(variation 2)
With reference to Figure 16 variation 2 is described.The conductive fabric 6B of variation 2 and the conductive fabric of example 16 relatively, and be then shown in figure 16, only is an otch 6a1 of horizontal direction and have the some difference in the shape of the vertical a plurality of parallel otch 6a2 that vertically disposes among this figure relatively.Otch 6a1 is through axle center 4c, and its end extends near the outside of external diameter shape 4a.Otch 6a2 is that length is identical, and its end extends near the outside of external diameter shape 4a.
According to the conductive fabric 6B of variation 2, become more multiple spot with the contact point of axle, can guarantee stable conducting more.
(variation 3)
With reference to Figure 17 variation 3 is described.The conductive fabric 6C of variation 3 and the conductive fabric 6B of variation 2 are more shown in figure 17; The length that only is vertically a plurality of parallel cuts 6a2 of configuration is adjusted to an imitation axle external diameter shape 4a, along be formed from axle center 4c and near axle external diameter shape 4a short difference.
Conductive fabric 6C according to variation 3; Shorten in order through making otch 6a imitation axle external diameter shape 4a, compare, make the rigidity raising owing to guarantee distance from the profile of conductive fabric to otch 6a2 end with the conductive fabric 6B of Figure 16; And can make the size decreases of conductive fabric, also make the device save spaceization.Interval between the otch 6a2 with direction is set can selects shape arbitrarily.
(variation 4)
With reference to Figure 18 variation 4 is described.The conductive fabric 6D of variation 4 have from the substantial middle of conductive fabric 6D a bit (following also be called " central point " or " " center ") 6c is a plurality of (this variation is six) first radial incision 6b of radial extension to the radial direction of axle external diameter shape 4a, characteristics are that not shown axle inserts central point 6c as the center.The central point 6c of conductive fabric 6D also is the intersection point of six otch 6a, and simultaneously identical with axle center 4c.The end of six otch 6b extends near the outside of external diameter shape 4a.
According to the conductive fabric 6D of variation 4,, a plurality of otch 6b increase and the contacting to count and improve the stability of conducting of axle through being set.When for example in Fig. 8, describing with the situation that adopts conductive fabric 6D; The crooked root position of conductive fabric 6D (part of all ends clamping in the interior all ends of the parts 7 that are pressed and the through hole 5a of ground plate 5) can not toppled over, can with state that contacting of axle 4 forced down under obtain stable conducting.In this variation the angle of adjacent cut 6b by with uniformly-spaced the configuration, even but arbitrary interval also can access identical effect.
Utilize said structure; Contact site with axle 4 among the otch 6b of conductive fabric 6D can access appropriate rigidity; Be difficult to toppling over contacting of axle 4 direction in the opposite direction, and otch 6b along with going to a center 4c diminish with contact site width axle 4, contact is pressed and is reduced; Therefore can access the energising of low load, for example ground structure.The shape of contact site is root expansion and attenuating along with going to leading section, and the upright advantage that bends of being difficult to by force with 4 soft a contact of leading section is arranged.
[embodiment 1]
Conductive fabric 6D1 with reference to Figure 19 illustrative embodiment 1.The conductive fabric 6D1 of embodiment 1 and the conductive fabric 6D of variation 4 are relatively, and be then shown in figure 19, appended the quantity of otch 6b on the point at two positions different in the horizontal direction of horizontal stroke in the drawings.Be that the conductive fabric 6D1 of embodiment 1 has from the central point 6c of conductive fabric 6D1 and is the first radial incision 6b at eight positions of radial extension to the radial direction of axle external diameter shape 4a, characteristics are that not shown axle inserts central point 6c as the center.
According to the conductive fabric 6D1 of embodiment 1, compare with the conductive fabric 6D of variation 4 and be provided with more otch 6b and come more to increase and count with contacting of axle and improve the stability of conducting more.When for example in Fig. 8, describing with the situation that adopts conductive fabric 6D1; The crooked root position of conductive fabric 6D1 (part of all ends clamping in the interior all ends of the parts 7 that are pressed and the through hole 5a of ground plate 5) can not toppled over, can with state that contacting of axle 4 forced down under obtain stable conducting.Be difficult to toppling over, can access contact along with going to a center 4c and press advantages such as minimizing with contacting of axle 4 direction in the opposite direction.
One example of flange group body (flange assembly), conductive fabric group body (conductive fabric assembly) is described with reference to Figure 20～Figure 28.Figure 20 represent to be used for to constitute as the flange 2 of the photoreceptor assembling of supporting body unit with after state the package assembly of the group body (below be called " flange assembly ") 32 of structure member etc.Shown in figure 20, flange assembly 32 comprises: the assembly of flange 2, conductive fabric 6D1 and pressing component 7 (below be called " conductive fabric assembly ") 33, ground plate 5.
Like Figure 20～shown in Figure 22, conductive fabric assembly 33 is the structures of pasting conductive fabric 6D1 and pressing component 7 via not shown two sides adhesive tape.6D1 is formed with at conductive fabric: be used to make an otch 6a at above-mentioned eight positions that connect, make the boss that is connected by two boss 2c of flange 2 use hole 6m.Shown in figure 23, be formed with at pressing component 7: make a through hole 7a bigger who connects, make the boss that is connected by two boss 2c of flange 2 use hole 7b than axle external diameter.
In Figure 20～Figure 22, Figure 24～Figure 27 etc., have in order easily to understand the otch 6b of conductive fabric 6D1 and to have carried out exaggeration with gap and enlarge expression, in fact the gap of otch 6b can't see, this some explanation in advance.
The job operation of conductive fabric assembly 33 is described with reference to Figure 24.At first, shown in Figure 24 (a), carry out the stickup of two sides adhesive tape 34 as first operation to pressing component 7.The two sides adhesive tape 34 that has peeling paper 34a is pasted on surface to the undressed pressing component 7 that possesses specific thickness.Then, as second operation and shown in Figure 24 (b), carry out the punching operation in the central authorities of pressing component 7.The drift 35 that dots comes punching press to comprise to have the pressing component 7 of the two sides adhesive tape 34 of peeling paper 34a to this operation for the through hole 7a (is in order to make two conductive fabric assemblies 33 at this) that forms pressing component 7, forms two through hole 7a.
Then, as the 3rd operation and shown in Figure 24 (c), carry out unprocessed conductive fabric 6D0 and be pasted with two sides adhesive tape 34 and formed the stickup operation of the pressing component 7 of through hole 7a.Peel off peeling paper 34a the conductive fabric 6D0 that pastes undressed otch 6b and be formed with through hole 7a and have the pressing component 7 of two sides adhesive tape 34.At last and shown in Figure 24 (d) as the 4th operation; Carry out the mould punching press for the conductive fabric 6D0 that pastes via two sides adhesive tape 34 and the sticking body of pressing component 7; At this; For example make the press forming die 36 that dots to carry out the mould punching press, carry out the boss that is used to form eight radial incision 6b of conductive fabric 6D1, two positions processing and the through hole 7a of pressing component 7, two boss simultaneously with the processing of hole 7b and outer shape with hole 6m and outer shape from conductive fabric 6D0 side.Then can access the conductive fabric assembly 33 shown in Figure 24 (e) through above operation.
In Figure 20 and Figure 24, pressing component 7 contacts conductive fabric 6D1 reliably with ground plate 5, be used with the purpose of guaranteeing conducting.On the other hand, bonding by two sides adhesive tape 34 for the assembleability that improves photoreceptor conductive fabric 6D1 and pressing component 7.Since main as long as conductive fabric 6D1 and ground plate 5 conductings just can, so the two sides adhesive tape 34 of bonding conductive fabric 6D1 and pressing component 7 need not have conduction.
The assemble method of flange assembly 32 at first makes the installed surface 2b side of surface and flange 2 of pressing component 7 of conductive fabric assembly 33 relative in Figure 20, and each boss of each boss 2c conductive cloth assembly 33 of flange 2 is embedded with hole 7b, 6m.Then; Each the boss fixed claw 5c that makes ground plate 5 with engage from each boss of conductive fabric assembly 33 each boss 2c with the outstanding flange 2 of hole 7b, 6m; Shown in Figure 26 (a)～Figure 26 (c); Utilize the spring action of each boss fixed claw 5c and engage with each boss 2c elasticity of flange 2 and fixing, make ground plate 5 be fixed and held at flange 2.
As stated, conductive fabric 6D1 when flange 2 is installed, embed to each boss two boss 2c of flange 2 with hole 6m.The relative external diameter of boss 2c and set the boss of conductive fabric 6D1 greatly with the internal diameter of hole 6m.Even this is the central point 6c for the otch 6b of conductive fabric 6D1 is not the yet not serious cause in center of axle 4.Suppose that under the situation of the central point of conductive fabric 6D1 6c and axle 4 misalignment the front end that utilizes the conductive fabric 6D1 that otch 6b is opened contacts with spools 4.Therefore, can not aim at mutual center tightly yet,, effect is also arranged for reducing cost so can loosen the dimensional tolerence of conductive fabric 6D1.Therefore, two of flange 2 boss 2c play guiding to conductive fabric 6D1 fully when flange 2 is installed.In fact the position that has just roughly determined conductive fabric 6D1 opposing flanges 2 that engages of the recess groove 2d that we can say the flange 2 through following record and the 6n of ear of conductive fabric 6D1.
Remark additionally the location structure of conductive fabric 6D1 when flange 2 is installed with reference to Figure 25.For through embedding the location of carrying out conductive fabric 6D1 to the boss of conductive fabric 6D1 with hole 6m to two boss 2c of flange 2; Just need fully guarantee the peripheral thickness of the boss of conductive fabric 6D1 with hole 6m; Therefore, the recess groove 2d of opposing flanges 2 and make the 6n of ear of conductive fabric 6D1 have deviation ground to reduce as far as possible to set chimeric size loosely.Thus, make each boss 2c of flange 2 replace guide ground that conductive fabric 6D1 is installed, last, at the 6n of ear of the recess groove 2d of flange 2 embedding conductive fabric 6D1, roughly determine the position of conductive fabric 6D1 opposing flanges 2.
With reference to the remark additionally relation of through hole 7a of function and pressing component 7 of conductive fabric 6D1 of Figure 27.With first example likewise also is to be set at not shown axle from pressing component 7 sides of conductive fabric assembly 33 towards the butt direction 8 of conductive fabric 6D1 to insert in the present embodiment 1.Therefore; Stickup pressing component 7 sides of conductive fabric assembly 33 just become and not shown axle contact side; So at the periphery that touches with not shown being coupling; That is the pressing component that, dotted line is represented in the otch 6b part that conductive fabric 6D1 is provided with is promptly schemed forbids that installation position 7c need be the state that does not have pressing component 7.Therefore, the central portion at pressing component 7 is formed with through hole 7a.
For example in Fig. 4, if insert the structure of axle 4 from gear 3 sides, the otch 6b part that then also can be employed in conductive fabric 6D1 also has the structure of pressing component 7.Through adopting this structure, also produce the advantage that the elasticity utilize pressing component 7 can make conductive fabric 6D1 touch with axle 4 more doughtily.
With reference to Figure 28 conductive fabric 6D1, pressing component 7 and ground plate 5 characteristics that remark additionally to flange 2 installment states.Shown in figure 28, flange 2 has eight rib 2e1,2e2 radially, is to be carried on these ribs 2e1, the last structure of 2e2 to conductive fabric 6D1.When for example explaining by Fig. 8, the height of the position change rib that these ribs 2e1,2e2 neutralization is corresponding with the 5b of two position crimping contact portions (claw portion) of the ground plate 5 of the inwall 1Aa contact of photoreceptor 1.Utilize the step of this rib and make the compressive state of pressing component 7 following.
That is, become high rib 2e1, because before pressing component 7 is met high rib 2e1, utilize ground plate 5 to push, so the pressing component 7 that for example is made up of the sponge of foamed polyurethane rubber is the states that compress fully with two two corresponding positions of the crimping contact 5b of portion.Be that six pressing components 7 that low rib 2e2 is corresponding in addition with two 5b of position crimping contact portion are used in compression.Since between high rib 2e1 and the low rib 2e2 not especially below the thing of supporting, so by the influence of adjacent ribs but the degree that contacts is a little arranged.Like this, ground plate 5 is that the center is guaranteed with the conducting of conductive fabric 6D1 with the place that rib is arranged.As stated; The 5b of two position crimping contact portions (claw portion) of ground plate 5 is when for example explaining by Fig. 8, and the inwall 1Aa of the relative photoreceptor 1 of the 5b of crimping contact portion (claw portion) pricks to advance to make ground plate 5 to photoreceptor 1 crimping installation and fixing to guarantee conducting suchly.Therefore, during to photoreceptor 1 assembling, make flange assembly 32 5b of two crimping contact portions (claw portion) the steady-state deformation ground of ground plate 5 high rib 2e1 is set, making end with this high rib 2e1 as propping up a point deformation in the root portion of the 5b of crimping contact portion (claw portion).
According to foregoing, also can be the shape of that kind shown in Figure 29 as the shaping form of conductive fabric 6D1.Among this figure, U word groove 6s up and down is conceived to utilize flange 2 each boss 2c to come the function of channeling conduct, uses 6m processing in hole more simply to be purpose with the boss than the conductive fabric 6D1 shown in Figure 20 etc.
(variation 5)
The conductive fabric 6E of variation 5 is described with reference to Figure 30.The conductive fabric 6E of variation 5 and the conductive fabric 6D of Figure 18 compare and the length weak point of the ratio first radial incision 6b; And in the central point 6c around change the phase place with otch 6b, having from central point 6c, be the point of a plurality of (this variation is six) second radial incision 6d of radial extension to the radial direction of axle external diameter shape 4a different.The length of otch 6d is shorter than otch 6b, is formed on the radial direction inboard of an external diameter shape 4a from the central point 6c of conductive fabric 6E.The central point 6c of conductive fabric 6E is the intersection point of a plurality of otch 6b and a plurality of otch 6d, promptly also is the center 6bc of a plurality of otch 6b.
According to the conductive fabric 6E of variation 5, when for example in Fig. 7, describing, can more increase contact a plurality of and axle 4 with the situation that adopts conductive fabric 6E, can guarantee stable conducting.And with variation 4 likewise adjacent cut 6d angle by with uniformly-spaced the configuration, even but arbitrary interval also can access identical effect.Even the length of otch also is that each otch 6b, 6d are inhomogeneous, also can access identical effect.
Utilize said structure; Contact site with axle 4 among the otch 6b of conductive fabric 6E, the 6d can access appropriate rigidity; Be difficult to toppling over contacting of axle 4 direction in the opposite direction, and contact width diminishes along with going to a center 4c, contact is pressed and is reduced; Therefore can access the energising of low load, for example ground structure.The shape with axle 4 contacts site of otch 6b, 6d is root expansion and attenuating along with going to leading section, and the upright advantage that bends of being difficult to by force with 4 soft a contact of leading section is arranged.
(variation 6)
The conductive fabric 6F of variation 6 is described with reference to Figure 31～Figure 33.Figure 31 is the front view of kerf of the conductive fabric 6F of expression variation 6, and Figure 32 is the expression axle 4 that dissects an end of the picture supporting body unit of variation 6 in length (axle) direction and the cut-open view of conductive fabric 6F leading section contact condition.
Different on the conductive fabric 6F of variation 6 and the conductive fabric 6D of Figure 18 point that relatively mainly to be the center 6bc that makes a plurality of otch 6b depart from from the optional position of central point 6c in axle external diameter shape 4a scope of conductive fabric 6F.The center 6bc of a plurality of otch 6b also is the position of intersecting point of six otch 6b.
Conductive fabric 6F according to this variation 6; In the number of contacts with axle 4 is a plurality of and improve the stability of conducting and reduce on the basis that contact pressure; Like Figure 31 and shown in Figure 32; Owing to the configuration of staggering the central point 6c of the axle center 4c of its axle 4 of the center 6bc of a plurality of otch 6b and perforation and conductive fabric 6F; So the length of contact portion is such mutual different shown in the deviation α of Figure 32 contact position in axle 4 and near the conductive fabric 6F leading section (represent the center 6bc of a plurality of otch 6b), the leading section of conductive fabric 6F becomes at length direction with spools 4 contact position and contacts with different positions.Thus, through seeking to enlarge the stability of hoping to have conducting more with the contact range of axle 4.
Utilize said structure; Contact site with axle 4 among the otch 6b of conductive fabric 6F can access appropriate rigidity; Be difficult to toppling over contacting of axle 4 direction in the opposite direction, and contact width diminishes along with going to a center 4c, contact is pressed and is reduced; Therefore can access the energising of low load, for example ground structure.The shape with axle 4 contacts site of otch 6b is root expansion and attenuating along with going to leading section, and the upright advantage that bends of being difficult to by force with 4 soft a contact of leading section is arranged.
Owing to stagger the center 6bc of a plurality of otch 6b with the position of axle center 4c, so can be suitable for and the reply amplitude broadens, can use the only different same a series of parts (axle) of external diameter for spools 4 of various external diameters, cost also is lowered.As concrete example, Figure 33 (a) expression be the big relatively situation of the external diameter of axle 4, Figure 33 (b) expression be the contact range of leading section and axle 4 of the conductive fabric 6F of the relatively little situation of the external diameter of axle 4.In Figure 33 (a) and (b) omit the axle 4 and the diagram of conductive fabric 6F structural detail in addition.
Because the external diameter of Figure 33 (a) axis 4 is big relatively, so in the contact condition that this figure upper side is represented, be the nearby contact of crooked root at conductive fabric 6, in the contact condition that lower side is represented, target is to join in position on the other hand.Because the external diameter of Figure 33 (b) axis 4 is relatively little, so if represent with extreme example in the lower side of this figure, then the leading section of conductive fabric 6F does not contact with axle 4.But in the upper side of this figure, target is to join in position.
(variation 7)
The conductive fabric 6G of variation 7 is described with reference to Figure 34.The conductive fabric 6G of variation 7 and the conductive fabric 6E of Figure 30 relatively and with the same technological thought of above-mentioned variation 6 under, mainly be that the point that departs from the center 6bc of a plurality of otch 6b and a plurality of otch 6d from the optional position of central point 6c in axle external diameter shape 4a scope of conductive fabric 6G is different.The center 6bc of a plurality of otch 6b and a plurality of otch 6d also is the position of intersecting point that amounts to 12 otch 6b, 6d.
According to the conductive fabric 6G of this variation 7, advantage and the effect same with above-mentioned variation 6 are arranged, and more can increase the number of contacts with axle 4 than the conductive fabric 6F of variation 6, can improve the stability of conducting more.
Utilize said structure; Contact site with axle 4 among the otch 6b of conductive fabric 6G, the 6d can access appropriate rigidity; Be difficult to toppling over contacting of axle 4 direction in the opposite direction, and contact width diminishes along with going to a center 4c, contact is pressed and is reduced; Therefore can access the energising of low load, for example ground structure.The shape with axle 4 contacts site of otch 6b, 6d is root expansion and attenuating along with going to leading section, and the upright advantage that bends of being difficult to by force with 4 soft a contact of leading section is arranged.
The various variation of the example 1 of the array configuration of " cutting-out portion ", " the cutting-out portion " of explanation conductive fabric and " otch " and shape below.
(variation 8)
Conductive fabric 6H, the 6I of variation 8 are described with reference to Figure 35 and Figure 36.Variation 8 compares with Fig. 5～conductive fabric with a plurality of otch 6a 6 shown in Figure 7; Shown in figure 35; Mainly be to use the point of the conductive fabric 6H with the 6e of cutting-out portion different; The 6e of this cutting-out portion can be inserted by axle 4 and connect, and possesses the contact site 6f that when axle 4 connects, makes conductive fabric 6H deflection and contact butt with axle 4.Contact site 6f is simple rectangle, is integrally formed with conductive fabric 6H floppily from the top of the 6e of cutting-out portion.
Headed by the conductive fabric 6H of this variation; In conductive fabric with various " cutting-out portions "; Comparing with conductive fabric 6,6A～6G of example 1, embodiment 1, variation 1～7, can the high precision adjustment be good with the butt scope that contacts of axle 4 and the point of butt pressure through working hard for the shape of " cutting-out portion ".
According to this variation, for example in Fig. 5～Fig. 7, the zone beyond the contact site 6f of the 6e of cutting-out portion of conductive fabric 6H and axle 4 contacts with the flat part 5p of ground plate 5 through axle 4, can guarantee the conducting of axle 4 and ground plate 5 via conductive fabric 6H.
Conductive fabric 6I shown in figure 36, the peripheral shape of conductive fabric is not limited to circle, can select arbitrary shapes such as polygon, curve shape, can select to meet the shape at installation site and position, the preferred shape such as shape of processing easily.
(variation 9)
The conductive fabric 6J of variation 9 is described with reference to Figure 37.The conductive fabric 6J of variation 9 and the conductive fabric 6H of Figure 35 are relatively; Difference only is: shown in figure 37; Have a plurality of (this variation is two) than contact site 6f and the little contact site 6f1 of contact area; Other positions of the 6e of cutting-out portion, the contact site 6f1 that promptly sets floppily from the top of the 6e of cutting-out portion in this legend, and possess to erect from the bottom of the 6e of cutting-out portion and set and be the contact site 6f1 of line symmetry for the center line 4b through axle center 4c.
According to this variation, count with contacting of conductive fabric 6J and can guarantee stable conducting through increasing axle 4.Being arranged on each contact site 6f1 for center line 4b in this legend is the position of line symmetry, also can be arbitrarily but the position is set.
(variation 10)
The conductive fabric 6K of variation 10 is described with reference to Figure 38 and Figure 39.The conductive fabric 6K of variation 10 and the conductive fabric 6H of Figure 35 are relatively; Difference only is: shown in Figure 38 and Figure 39 (b), replace contact site 6f and have when axle 4 connects conduct and comprise the shape that makes the line contact site 6g that substantial line contacts with the butt state of conductive fabric 6K leading section.
Shown in Figure 38 and Figure 39 (b), line contact site 6g connects conductive fabric 6K and with the profile of axle 4 during with the peripheral shape butt, line contact site 6g is the line contact shape with the form coincidence of the profile of imitation axle 4 and peripheral shape at axle 4.Thus, the situation shown in this variation and Figure 39 (a) relatively makes contact range expansion because axle 4 contacts with the line of line contact site 6g, can guarantee stable conducting.
On the other hand; Under the situation of the conductive fabric 6H that uses Figure 35; Because the shape of the contact site 6f of conductive fabric 6H is simple linearity; So shown in Figure 39 (a), connect conductive fabric 6H and be a contact condition during with the profile of axle 4 and peripheral shape butt, can not look to contact range to expand the degree of the conductive fabric 6K of variation 10 at axle 4.
(variation 11)
The conductive fabric 6L of variation 11 is described with reference to Figure 40.The conductive fabric 6L of variation 11 is the equal of the conductive fabric 6K of the conductive fabric 6D of variation shown in Figure 180 4 and variation 10 shown in Figure 38 combination.That is, conductive fabric 6L have line contact site 6g be formed on roughly complete in the 6e of cutting-out portion of perimembranous, and have from the central point 6c of conductive fabric 6L and extend to an a plurality of otch 6b in the external diameter shape 4a outside radially.
According to this variation, with the conductive fabric 6K of Figure 38 relatively, through so a plurality of lines contact site 6g and a plurality of radial incision 6b and usefulness, can further enlarge the scope of line contact position.The shape of 6e of cutting-out portion and line contact site 6g thereof decides shape according to the quantity of otch 6b, and this variation is set at four, but can set any radical for.
(variation 12)
The conductive fabric 6M of variation 12 is described with reference to Figure 41.The conductive fabric 6M of variation 12 and the conductive fabric 6K of Figure 38 are relatively; Difference is: for example in Fig. 8 when adopting the situation explanation of conductive fabric 6M; Mainly be to replace possessing the 6e of cutting-out portion of line contact site 6g and having the 6h of cutting-out portion, it is along with towards axle center 4c and the shape contact site 6j that the butt area reduces that the 6h of this cutting-out portion possesses when axle 4 connects a butt state with axle external diameter shape 4a.
Contact site 6j and the 6h of cutting-out portion are formed on conductive fabric 6M for the center line of the central point 6c through axle center 4c and conductive fabric 6M with becoming line object.For example in Fig. 8 when adopting the situation explanation of conductive fabric 6M, contact site 6j become from the bending position of conductive fabric 6M and the leading section of conductive fabric 6M along axle center 4c and the triangle that width 6k shortens gradually.In other words, contact site 6j appear along with from the interior perimembranous of the 6h of cutting-out portion towards the central point 6c of axle center 4c and conductive fabric 6M and the triangle that width 6k shortens gradually.
According to this variation; Utilize said structure, the contact site 6j of conductive fabric 6M can access the rigidity of appropriateness, is difficult to toppling over contacting of axle 4 direction in the opposite direction; And width 6k diminishes along with going to a center 4c; Contact is pressed and is reduced, and therefore can access the energising of low load, for example ground structure.The shape of contact site 6j is root expansion and attenuating along with going to leading section, and the upright advantage that bends of being difficult to by force with 4 soft a contact of leading section is arranged.
(variation 13)
With reference to Figure 42 variation 13 is described.It is that the energising of framework 14 is for example in the ground structure that variation 13 is used above-mentioned conductive fabric 6,6A～6M in the for example framework of axle 4 and handle box 58 as supporting body unit 10 shown in Figure 2.
See figures.1.and.2, handle box 58 that kind as stated comprises: have the picture supporting body unit 10 as formation such as supporting body 1 grade, the charged roller 11 that constitutes Charging system, the cleaning balde 13 that constitutes cleaning device, the developer roll 12 of formation developing apparatus and the framework 14 as the box-shaped body support unit that supports their one.Handle box 58 body frame 51 that relative coloured image forms device 50 via framework 14 can freely be loaded and unloaded.
Among Figure 42, as supporting body unit 10 during to framework 14 mounting supports of handle box 58, the end (right part of figure) spools 4 is bearing in framework 14.One end (right part of figure) of the axle 4 of picture supporting body unit 10 when connecting conductive fabric 6, conductive fabric 6 deflections and with the outer peripheral face butt of axle 4, axle 4 with as the backing plate 28 of energising (ground connection) object via conductive fabric 6 conductings.
An axle end (right part of figure) of 4 and the other end (left part of figure) are for example via 29 supportings of bearing that are made up of sliding bearing etc.Each bearing 29 is fixed on the framework 14 that can be installed in the handle box 58 of these figure body frame 51 sides with freely loading and unloading.Each bearing 29 is had existing 4 the energising electric conductivity railway grease that for example earthing mechanism adopted by inclosure, is not in order to obtain the special structure of electric conductivity, can to use general general bearing.Backing plate 28 is by the good material of electric conductivity, and for example plate such as steel plate forms.
Conductive fabric 6 has can be by the otch of axle 4 perforations, and backing plate 28 contacts in the part beyond the otch with conductive fabric 6.
As the contact method of backing plate 28 with conductive fabric 6; It is configuration pressing component 7 between framework 14 and conductive fabric 6; And then with pressing component 7 resilient material of pressing component 7 is compressed through push conductive fabric 6 with backing plate 28, so conductive fabric 6 can stably contact with backing plate 28.Thus, stablely for a long time guarantee conducting.Among Figure 42, sequentially assemble bearing 29, backing plate 28, conductive fabric 6, pressing component 7, framework 14 as figure according to this from left to right, constitute the part of handle box 58.In the ground structure of Figure 42, backing plate 28 joins with the zone that overlaps of conductive fabric 6 in the otch figure in addition of conductive fabric 6, thus, makes backing plate 28 and conductive fabric 6 conductings.
Shown in figure 42, when inserting axle 4 one ends as supporting body unit 10 from direction of insertion 8, then an end of axle 4 connects the otch of the conductive fabric 6 that is arranged on framework 14, and conductive fabric 6 contacts with axle 4 with deflected.At this moment, backing plate 28 is clamped by bearing 29 and framework 14 with conductive fabric 6 and is fixed, and utilizes axle 4 to contact with backing plate 28 with conductive fabric 6 and can make spools 4 and backing plate 28 conductings.When body frame 51 sides that are installed in handle box 58 in this figure, then the conducting portion (not shown) with body frame 51 joins, and keeps the conducting relation.As stated, the surface of axle 4 and the above-mentioned conducting portion of body frame 51 become the conducting relation, because body frame 51 is energized ground connection, so can make the ground wire grounded of photoreceptor 1 via axle 4.
For a conductive fabric 6 and axle 4 contact, be can access through conductive fabric 6 self deflection with axle 4 suitable contact pressures, and its shape only is that conductive cloth 6 is added with otch this very simply processes and just can obtain above-mentioned performance with simple shape.Conductive fabric 6 contains metal, but this is not a main material, so can not produce the poor flow that existing problem is promptly caused by unusual sound and oxidation.
Variation 13 is not limited thereto, and only otherwise expect the advantage of configuration pressing component 7 and effect so far, then also can likewise remove pressing component 7 with example 1.And variation 13 is not limited to use the conductive fabric 6 same with example 2, also can be suitable for Figure 29 with any of the conductive fabric 6A～6M of conductive fabric 6 and note, and at this moment above-mentioned advantage and effect are arranged certainly.
(variation 14)
With reference to Figure 43 variation 14 is described.It is that the energising of framework 14 is for example in the ground structure that variation 14 is used above-mentioned conductive fabric 6,6A～6M in the for example framework of axle 4 and handle box 58 as supporting body unit 10 shown in Figure 2.Variation 14 compares with variation 13 shown in Figure 42, and is mainly sequentially different the point of bearing 30, pressing component 7, conductive fabric 6, framework 14 part of formation handle box 58 as scheming assembling according to this from left to right.
Among Figure 43, as supporting body unit 10 during to framework 14 mounting supports of handle box 58, the end (right part of figure) spools 4 is bearing in framework 14.One end (right part of figure) of the axle 4 of picture supporting body unit 10 when connecting conductive fabric 6, conductive fabric 6 deflections and with the outer peripheral face butt of axle 4, axle 4 with as the framework 14 of energising (ground connection) object via conductive fabric 6 conductings.
Support via bearing 30 one end (right part of figure) and the other end (left part of figure) of axle 4.Each bearing 30 is fixed on the framework 14 that can be installed in these figure body frame 51 sides with freely loading and unloading.Framework 14 is by the good material of electric conductivity, and for example plate such as steel plate forms.Each bearing 30 is had the existing energising electric conductivity railway grease that for example earthing mechanism adopted by inclosure, is not in order to obtain the special structure of electric conductivity, can to use general general bearing.
Conductive fabric 6 has can be by the otch of axle 4 perforations, and framework 14 contacts in the part beyond the otch with conductive fabric 6.
As the contact method of framework 14 with conductive fabric 6; It is configuration pressing component 7 between bearing 30 and conductive fabric 6; And then with pressing component 7 resilient material of pressing component 7 is compressed through push conductive fabric 6 with framework 14, so conductive fabric 6 can stably contact with framework 14.Thus, stablely for a long time guarantee conducting.Among Figure 43, sequentially assemble bearing 30, pressing component 7, conductive fabric 6, framework 14 as figure according to this from left to right, constitute the part of handle box 58.Framework 14 joins with the zone that overlaps of conductive fabric 6 in the otch figure in addition of conductive fabric 6, thus, makes framework 14 and conductive fabric 6 conductings.
Shown in figure 43, when inserting axle 4 one ends as supporting body unit 10 from direction of insertion 8, then axle 4 connects the otch that is arranged on conductive fabric 6, and conductive fabric 6 contacts with axle 4 with deflected.At this moment, framework 14 is clamped by bearing 30 and framework 14 with conductive fabric 6 and is fixed, and utilizes axle 4 contact with framework 14 with conductive fabric 6 and can make spools 4 and framework 14 conductings, the part of formation handle box 58.When body frame 51 sides that are installed in handle box 58 in this figure, then framework 14 joins with the conducting portion (not shown) of body frame 51, keeps the conducting relation.As stated, the surface of axle 4 and the above-mentioned conducting portion of body frame 51 become the conducting relation, because body frame 51 is energized ground connection, so the ground wire of axle 4 can ground connection.
(variation 15)
With reference to Figure 44 variation 15 is described.It is that the energising of framework 14 is for example in the ground structure that variation 15 is used above-mentioned conductive fabric 6,6A～6M in the for example framework of axle 4 and handle box 58 as supporting body unit 10 shown in Figure 2.
The variation 14 of variation 15 and Figure 43 relatively, difference is: mainly use the point of the conductive fabric 6Z that does not have otch and cutting-out portion (perforation abutting part) replacing conductive fabric 6 or conductive fabric 6,6A～6M and remove pressing component 7.
Among this figure, sequentially assemble bearing 31, conductive fabric 6Z, framework 14 as figure according to this from left to right, constitute handle box 58.At this moment, push end face 4d to the conductive fabric 6Z that does not connect abutting part from direction of insertion 8 and to make deflection, make axle 4 and framework 14 conductings via conductive fabric 6Z as axle 4 one ends of supporting body unit 10.When body frame 51 sides that are installed in handle box 58 in this figure, then framework 14 joins with the conducting portion (not shown) of body frame 51, keeps the conducting relation.As stated, the surface of axle 4 and the above-mentioned conducting portion of body frame 51 become the conducting relation, because body frame 51 is energized ground connection, so the ground wire of axle 4 can ground connection.
(example 2)
The example 2 of tape cell is described with reference to Figure 45 and Figure 46.At first with reference to Figure 45, supplementary notes possess the structure and the action of Fig. 1 intermediate duplication band 53 isostructural intermediate duplication tape cells 15 in order to understand example 2 easily.Figure 45 is the major part enlarged front view that is useful in this example in the dubs device of Fig. 1.
Among Figure 45, a part is such as stated, and along with by the rotation of not shown driving motor driven roller 55 of direction of arrow driven in rotation in this figure, and intermediate duplication band 53 is transported by the direction of arrow in this figure.Sheet material S is such shown in dot-and-dash line, meet the toner that on intermediate duplication band 53, forms and arrive periodically being given of secondary duplicating position as leading section, through duplicate to secondary roller 63 apply replica biased and toner as transfer replication to sheet material S.Among Figure 45, the 17th, expression is rolled with the back side of intermediate duplication band 53 and is contacted the band back side cleaning roller to clean.
In order to improve the transport force to intermediate duplication band 53, driven roller 55 uses the conductive metal roller as conductive base material 55A cylindraceous (with reference to Figure 46), has the elastomeric material of grasping in the surface-coated of this conductive metal roller.Owing to a part of duplicating the secondary replica current that bias voltage that roller 63 applies produces to secondary through sheet material S and intermediate duplication band 53, from driven roller 55 to ground connection side and ground wire inflow.To duplicate electric current that roller 63 flows into from secondary and transmit along above-mentioned path and flow in order to make, sneaked into graphite and titanium etc., apply and become to make its specific insulation to become 1.0 * 10 at the coat 55B of driven roller 55 (with reference to Figure 46) to ground wire 4～10 8Ω cm.
As stated, driven roller 55 is coated with the mother tube material different conductivity material with metallic roll in the surperficial part of this roller.
But arrived latter stage endurance life of intermediate duplication tape cell 15, produced film on the surface of driven roller 55, resistance value is risen owing to the composition of intermediate duplication band 53, the foreign matter that is blended into band inside and toner etc.In this state, if the secondary transfer bias voltage is applied repeatedly, the drive roller 55 of the coating layer 55B energized, the change with time (longitude), it causes abnormal discharge in the image residual traces of discharge.And the high-tension electricity source adverse current that the electric current during discharge duplicates roller 63 to secondary brings for sometimes the high pressure basis unusually.The problem of this paradoxical discharge is duplicated roller 63 alternating action positive bias and negative biass to secondary, when making the toner that duplicates roller 63 surface attached to secondary to known control that intermediate duplication band 53 sides spue, the tendency of obvious generation is arranged.
So the intermediate duplication tape cell 15 of Figure 46 of the content 14 suitable of the present invention through in driven roller 55, adopting rotary body energising of the present invention (ground connection) mechanism solves the problems referred to above.Except using except that electric cloth, also can use conductive sheet.Recognizing through experiment etc., is 1.0 * 10 when the specific insulation that removes electric cloth is chosen to be 5Material below the Ω cm alternately applies said positive bias and negative bias even then duplicate roller 63 to secondary, also can not produce the adverse current electric current to the high pressure basis, can not produce the high pressure basis unusually.
Example 2 compares with example 1, and difference only is: mainly be on the basis of Fig. 2 iseikonia supporting body unit 10, to use Figure 45 and intermediate duplication tape cell 15 shown in Figure 46.Except this difference, it is identical that the coloured image of example 2 and example 1 forms device 50.The intermediate duplication tape cell of Figure 46 15 with after state among the intermediate duplication tape cell 15A of Figure 29, omit the diagram of intermediate duplication band 53 grades for illustrated simple and clearization and only represent major part.Below, be center explanation example 2 its specific structure etc. with above-mentioned difference.
Be suitable in the intermediate duplication tape cell 15 of Figure 45 of this example, in driven roller 55 and the driven voller 56 at least driven roller 55 are the hollow rotating parts that on cylindric conductive base material 55A, possess coat 55B.In this example, driven roller 55 also can all be the hollow rotating parts with driven voller 56, but simple and clearization in order to explain is that representative is explained with driven roller 55.
Know clearly like Figure 45 and Figure 46 and to show; Intermediate duplication tape cell 15 possesses: as the driven roller 55 of hollow rotating parts, be fixed on the flange 2 of driven roller 55 at least one ends, can support the metallic conductive shaft 16 of driven roller 55 through the hole 2a that connects flange 2 central parts rotatably, conductive fabric 6 and the pressing component 7 same with example 1; Axle 16 when direction of insertion 8 connects conductive fabrics 6, make conductive fabric 6 to direction of insertion 8 deflections and with axle 16 butts; Its flat part 5p contacts and is installed in flange 2 with conductive fabric 6; Possessing has a pair of crimping contact 5b of portion to the fixing ground plate 5 of the conductive base material 55A of driven roller 55 crimping, makes the conductive base material 55A and axle 16 conductings of driven roller 55 with contacting of conductive fabric 6 via ground plate 5.
As stated; The inwall 55Aa of the conductive base material 55A of the crimping contact 5b of portion of ground plate 5 through being fixed on driven roller 55 and with conductive base material 55A conducting; And make flat part 5p butt and the conducting of a part and the ground plate 5 of conductive fabric 6; So the flat part 5p (base end part) of ground plate 5 is the equal of an energising object side, the coat 55B of driven roller 55 is the equal of the energising object.Therefore, the part that this example makes conductive fabric 6 is the flat part 5p butt of ground plate 5 with energising object side, make conductive fabric 6 another part deflection and with as by axle 16 butts of butt parts.
Be set with in the other end of driven roller 55 (left part side among the figure) and the transmission of Fig. 3 and the picture supporting body shown in Figure 4 unit 10 similar structures gear (not shown) from not shown driving motor rotary driving force, driven roller 55 is driven around axle 16 rotations.The a pair of intermediate duplication tape cell side plate (not shown) that axle 16 is provided in intermediate duplication band 53 both sides supports.This intermediate duplication tape cell side plate is fixed on the plate (not shown) of the quilt for example stainless steel electrical ground that body frame 51 shown in Figure 1 installed, and the end of conductive shaft 16 and the conducting of above-mentioned intermediate duplication tape cell side plate make axle 16 ground connection.As stated, make axle 16 conducting mechanism electrical ground with the said intermediate duplication tape cell side plate formation that is installed in body frame 51 and plate electrical ground (not shown) conducting.
The conductive fabric 6 of this example has the otch that the axle 16 that replaced 14 of example connects, and ground plate 5 contacts in otch part in addition with conductive fabric 6.And this example is shown in figure 46, and the circumferential profile shape of conductive fabric 6 is formed greatlyyer than through hole 5a, joins in the zone that overlaps with the flat part 5p of this ground plate 5.Thus, ground plate 5 is switched on conductive fabric 6.
Among Figure 46; Assemble method about the driven roller unit that constitutes intermediate duplication tape cell 15; As long as replace to " driven roller 55 " to " as the supporting body 1 " of example 1 respectively, replace to " the inwall 55Aa of conductive base material 55A " to " the inwall 1Aa of conductive base material 1A ", replace to " axle 16 " to " axle 4 " and just can understand easily and implement, so explaining that omission is a part of.
Be fixed on flange 2 to ground plate 5 and conductive fabric 6 and pressing component 7; Embed flange 2 and be pressed into the inboard of driven roller 55; Make conductive base material 55A and ground plate 5 and make ground plate 5 with conductive fabric 6 and conductive fabric 6 contact respectively with axle 16, then can finally make a conductive base material 55A and 16 conducting.At this moment; As the contact method of ground plate 5 with conductive fabric 6; Be configuration pressing component 7 between flange 2 and conductive fabric 6, and then make the distortion of pressing component 7 elastic compression with pressing component 7, can make conductive fabric 6 and ground plate 5 butt stably through push conductive fabric 6 with ground plate 5.Thus, can stablize and guarantee long-time conducting.
Among Figure 45; Because the driving force drive disk assembly meshed gears (not shown) such as gear row that link with not shown driving motor are transmitted the rotary driving force of above-mentioned driving motor; So driven roller 55 is driven to the direction of arrow rotation among Figure 45; Ground plate 5 is also with the direction of arrow rotation in Figure 45 of flange 2, conductive fabric 6 and pressing component 7, on one side the sliding contact on one side on the outer peripheral face of axle 16 of the flexed portion of conductive fabric 6 is rotated.At this moment because conductive fabric 6 has electric conductivity and has suitable lubricity, so even with the slip object promptly axle 16 contact also and can not produce unusual sound and oxidation, can guarantee stable conducting for a long time.Can remove between metal when sliding to reduce the coating conductive lubricant that sliding resistance is a purpose (for example electric conductivity railway grease etc.); So can also alleviate environmental loads, can realize and provide coloured image to form device 50 for the also good intermediate duplication tape cell of environmental protection 15 and Fig. 1.
For a conductive fabric 6 and axle 4 contact, be can access through conductive fabric 6 self deflection with axle 4 suitable contact pressures, and its shape only is that conductive cloth 6 is added with otch this very simply processes and just can obtain above-mentioned performance with simple shape.Conductive fabric 6 contains metal, but this is not a main material, so can not produce the poor flow that existing problem is promptly caused by unusual sound and oxidation.
Intermediate duplication tape cell 15 is not limited thereto, and only otherwise expect the advantage of configuration pressing component 7 and effect so far, then also can remove pressing component 7 from middle dubs unit 15.When even borrowing Figure 46 to explain, be also can remove pressing component 7 from this figure, the state of only clamping conductive fabric 6 with the installed surface 2b of opposing flanges 2 fixes and keeps ground plate 5.
And example 2 is not limited to use the example of conductive fabric 6, also can be suitable for Figure 46 with any of the conductive fabric 6A～6M of conductive fabric 6 and note, and at this moment above-mentioned advantage and effect are arranged certainly.
(variation 16 of example 2)
The variation 16 of example 2 is described with reference to Figure 47.Variation 16 compares with Figure 45 and example 2 shown in Figure 46, and difference is: mainly be to use intermediate duplication tape cell 15A shown in Figure 47 at the intermediate duplication tape cell 15 that replaces Figure 46.Then variation 16 is identical with example 2 difference except this.
Know clearly like Figure 45 and Figure 47 and to show; Among the intermediate duplication tape cell 15A; As the driven roller 55 of driven in rotation parts and as at least one (following with example 2 be that representative describes likewise) of the driven voller 56 of driven rotary part with " the hollow rotating parts are driven roller 55 " be driven roller 55 when connecting conductive fabric 6, make conductive fabric 6 deflections and with the surperficial butt of driven roller 55, driven roller 55 with as the backing plate 18 of (ground connection) object side of switching on via conductive fabric 6 conductings.
One end of driven roller 55 (right part of figure) and the other end (left part of figure) are for example via the bearing 19 that is made up of rolling bearing etc. and by free rotary ground supporting.Each bearing 19 is fixed on the unit framework 20 that can be installed in these figure body frame 51 sides with freely loading and unloading.Each bearing 19 is had the energising electric conductivity railway grease that for example earthing mechanism adopted of existing rotary body by inclosure, is not the special structure that constitutes in order to obtain electric conductivity, can use general general bearing.Backing plate 18 is by the good material of electric conductivity, and for example plate such as steel plate forms.
Conductive fabric 6 has the otch that the driven roller 55 that can be replaced 2 16 of examples connects, and backing plate 18 contacts in otch part in addition with conductive fabric 6.
As the contact method of backing plate 18 with conductive fabric 6; It is configuration pressing component 7 between unit framework 20 and conductive fabric 6; And then with pressing component 7 resilient material of pressing component 7 is compressed through push conductive fabric 6 with backing plate 18, so conductive fabric 6 can stably contact with backing plate 18.Thus, the variation in elapsed time and stably guarantee conducting.Among Figure 47, sequentially assemble bearing 19, backing plate 18, conductive fabric 6, pressing component 7, unit framework 20 as figure according to this from left to right, constitute the pair unit (parts assembling) of intermediate duplication tape cell 15A.In the pair unit of intermediate duplication tape cell 15A, backing plate 18 joins with the zone that overlaps of conductive fabric 6 in the otch figure in addition of conductive fabric 6, thus, makes backing plate 18 and conductive fabric 6 conductings.
Shown in figure 47, when inserting driven roller 55 from direction of insertion 8, then driven roller 55 connects the otch of the conductive fabric 6 that is arranged on intermediate duplication tape cell 15A pair unit, and conductive fabric 6 contacts with driven roller 55 with deflected.At this moment, backing plate 18 is clamped by bearing 19 and unit framework 20 with conductive fabric 6 and is fixed, and utilizes driven roller 55 to contact with backing plate 18 with conductive fabric 6 and can make driven roller 55 and backing plate 18 conductings, formation intermediate duplication tape cell 15A.When body frame 51 sides that are installed in intermediate duplication tape cell 15A in this figure, then the conducting portion (not shown) with body frame 51 joins, and keeps the conducting relation.As stated, the above-mentioned conducting portion of the surface of driven roller 55 and body frame 51 becomes the conducting relation, because body frame 51 is energized ground connection, so can make the ground wire grounded of driven roller 55.
Be set with in the other end of driven roller 55 (left part side among the figure) and the transmission of Fig. 3 and the picture supporting body shown in Figure 4 unit 10 similar structures gear (not shown) from not shown driving motor rotary driving force, driven roller 55 is by each bearing 19 supporting and be driven in rotation.
Among Figure 47; Because the driving force drive disk assembly meshed gears such as gear row that link with not shown driving motor are had the rotary driving force of above-mentioned driving motor by transmission; So the direction of arrow rotation of driven roller 55 in Figure 45, on one side the sliding contact on one side on the outer peripheral face of driven roller 55 of the flexed portion of conductive fabric 6 is rotated.At this moment, because conductive fabric 6 has electric conductivity and has suitable lubricity, so, can guarantee stable conducting for a long time even be that driven roller 55 contacts also and can not produce unusual sound and oxidation with the slip object.Can remove between metal when sliding to reduce the coating conductive lubricant that sliding resistance is a purpose (for example electric conductivity railway grease etc.); So can also alleviate environmental loads, can realize and provide coloured image to form device 50 for the also good intermediate duplication tape cell 15A of environmental protection and Fig. 1.
For contacting of conductive fabric 6 and driven roller 55; Be can access through conductive fabric 6 self deflection with driven roller 55 suitable contact pressure, and its shape only is that conductive cloth 6 is added with this very simple processing of otch and just can obtains above-mentioned performance with simple shape.Conductive fabric 6 contains metal, but this is not a main material, so can not produce the poor flow that existing problem is promptly caused by unusual sound and oxidation.
Intermediate duplication tape cell 15A is not limited thereto, and only otherwise expect the advantage of configuration pressing component 7 and effect so far, then also can likewise remove pressing component 7 from middle dubs unit 15A with example 2.Variation 16 is not limited to use the example with the same conductive fabric 6 of example 2, also can be suitable for Figure 47 with any of the conductive fabric 6A～6M of conductive fabric 6 and note, and at this moment above-mentioned advantage and effect are arranged certainly.
In example 2 and the variation 16; Tape cell is that example has been carried out the expression explanation to be provided in the intermediate duplication tape cell 15, the 15A that have the intermediate duplication belting of intermediate duplication band as the intermediate duplication body; But be not limited thereto; Can certainly be provided in have picture supporting body band (photoreceptor belt that for example possesses the Electrophtography photosensor layer) as the supporting body belting with have any the tape cell that duplicates the moving belt device that duplicates moving belt that transports body as duplicating, perhaps also can be the image processing system of any ( content 24,32 of the present invention) that has them.And possess any of Electrophtography photosensor layer, electrostatic recording dielectric layer and magnetic recording magnetic layer etc. as the supporting body band.
(example 3)
The example 3 of fixation unit is described with reference to Figure 48 and Figure 49.At first with reference to the remark additionally fixing device 64 of Fig. 1 of Figure 48.Figure 48 is the major part enlarged front view that is useful in this example Fig. 1 fixing device 64.
Among Figure 48; Fixing device 64 has: as the well heater 69 of thermal source, possess the backer roll 72 as pressure-producing part that forms holding part as the rubber layer 70a of elastic layer and as the warm-up mill 70 of heater block, to warm-up mill 70 crimping; Have and transport the sheet material S that is formed with the unfixing toner picture and pass through said holding part, make unfixing toner as the known configurations of photographic fixing on sheet material S.
Backer roll 72 is formed with the rubber layer 72a as elastic layer at the peripheral part as the metallic electric conductivity mandrel axis 73 of turning axle.Usually, warm-up mill 70 sides are the driven in rotation parts that are driven in rotation through not shown driving mechanism, and backer roll 72 sides are to warm-up mill 70 crimping and the driven rotary part of driven rotation.
Example 3 compares with example 1, and difference is: mainly be on the basis of Fig. 2 iseikonia supporting body unit 10, to use Figure 48 and fixation unit 21 shown in Figure 49.Except this difference, it is identical that the coloured image of example 3 and example 1 forms device 50.
Shown in figure 49; In the fixation unit 21 of this example; Mandrel axis 73 as at least one (following is that representative describes with " backer roll 72 ") backer roll 72 of warm-up mill 70 and backer roll 72; When connecting conductive fabric 6, make conductive fabric 6 deflections and with mandrel axis 73 butts, make mandrel axis 73 and bearing support 23 conductings as energising object side via conductive fabric 6.
Mandrel axis 73 1 ends of warm-up mill 72 (the right part side of figure) and the other end (the left part side of figure) via bearing 22 by free rotary ground supporting.Each bearing 22 is fixed on the bearing support 23 that can be installed in these figure body frame 51 sides with freely loading and unloading.Bearing support 23 is by the good material of electric conductivity, and for example plate such as steel plate forms.Each bearing 22 is had the energising electric conductivity railway grease that for example earthing mechanism adopted of existing rotary body by inclosure, is not to have constituted the special structure that obtains electric conductivity, can use general general bearing and make.
Conductive fabric 6 has the otch that the mandrel axis 73 of the warm-up mill 72 that can be replaced 14 of example connects, and bearing support 23 contacts in otch part in addition with conductive fabric 6.
As the contact method of bearing support 23 with conductive fabric 6; It is configuration pressing component 7 between bearing 22 and conductive fabric 6; And then with pressing component 7 resilient material of pressing component 7 is compressed through push conductive fabric 6 with bearing support 23, so conductive fabric 6 can stably contact with bearing support 23.Thus, stablely for a long time guarantee conducting.Among Figure 49, sequentially assemble bearing 22, pressing component 7, conductive fabric 6, bearing support 23 as figure according to this from left to right, and the pair unit (parts assembling) of formation fixation unit 21.In the pair unit of fixation unit 21, bearing support 23 joins with the zone that overlaps of conductive fabric 6 in the otch figure in addition of conductive fabric 6, thus, makes bearing support 23 and conductive fabric 6 conductings.
Shown in figure 49, when inserting the mandrel axis 73 of warm-up mill 72 from direction of insertion 8, then mandrel axis 73 connects the otch of the conductive fabric 6 that is arranged on fixation unit 21 pair units, and conductive fabric 6 contacts with the mandrel axis 73 of warm-up mill 72 with deflected.At this moment, bearing support 23 is clamped by bearing 22 and bearing support 23 with conductive fabric 6 and is fixed, and utilizes mandrel axis 73 to contact with bearing support 23 with conductive fabric 6 and can make mandrel axis 73 and bearing support 23 conductings, formation fixation unit 21.When body frame 51 sides that are installed in fixation unit 21 in this figure, then bearing support 23 joins with the conducting portion (not shown) of body frame 51, keeps the conducting relation.As stated, the surface of the mandrel axis 73 of warm-up mill 72 and the above-mentioned conducting portion of body frame 51 become conducting relation, because body frame 51 is energized ground connection, so can make mandrel axis 73 ground wire grounded of warm-up mill 72.
Be set with in the other end (left part side among the figure) of the mandrel axis 73 of warm-up mill 72 and the transmission of Fig. 3 and the picture supporting body shown in Figure 4 unit 10 similar structures gear (not shown) from not shown driving mechanism rotary driving force, the mandrel axis 73 of warm-up mill 72 is by each bearing 22 supporting and be driven in rotation.The direction of arrow rotation of the mandrel axis 73 of warm-up mill 72 in Figure 48 is on one side the sliding contact on one side on the outer peripheral face of the mandrel axis 73 of warm-up mill 72 of the flexed portion of conductive fabric 6 is rotated.At this moment, because conductive fabric 6 has electric conductivity and has suitable lubricity, so, can guarantee stable conducting for a long time even be that mandrel axis 73 contacts also and can not produce unusual sound and oxidation with the slip object.Can remove between metal when sliding to reduce the coating conductive lubricant that sliding resistance is a purpose (for example electric conductivity railway grease etc.); So can also alleviate environmental loads, can realize and provide coloured image to form device 50 for the also good fixation unit of environmental protection 21 and Fig. 1.
For contacting of conductive fabric 6 and mandrel axis 73; Be can access through conductive fabric 6 self deflection with mandrel axis 73 suitable contact pressure, and its shape only is that conductive cloth 6 is added with this very simple processing of otch and just can obtains above-mentioned performance with simple shape.Conductive fabric 6 contains metal, but this is not a main material, so can not produce the poor flow that existing problem is promptly caused by unusual sound and oxidation.
Fixation unit 21 is not limited thereto, and only otherwise expect the advantage of configuration pressing component 7 and effect so far, then also can likewise remove pressing component 7 from fixation unit 21 with example 2.And be not limited to use the example with the same conductive fabric 6 of example 2, also can be suitable for Figure 49, at this moment above-mentioned advantage and effect are arranged certainly with any of the conductive fabric 6A～6M of conductive fabric 6 and note.
(variation 17 of example 3)
The variation 17 of fixation unit example 3 is described with reference to Figure 50 and Figure 51.Figure 50 is to use the front view of the fixing device 64A of photographic fixing band, and Figure 51 is the major part amplification view that is useful in this example fixing device 64A.
The variation 17 of example 3 compares with the example of Figure 48 and Figure 49 3, shown in Figure 50 and Figure 51, mainly is to use the point of fixing device 64A to use the point of fixation unit 21A different with replacing fixation unit 21 replacing fixing device 64.
Among Figure 50; Fixing device 64A has: annular fixing band 74, built-in as thermal source well heater 75 and as the warm-up mill 76 of heater block, with warm-up mill 76 around the fixing roller 77 that hangs with photographic fixing band 74, form the backer roll 78 as pressure-producing part of holding part to 74 crimping of photographic fixing band, pay the idler roller 79 of regulation tension force to 74 crimping of photographic fixing band via fixing roller 77 as fixing member; Have and transport the sheet material S that is formed with the unfixing toner picture, make unfixing toner as the known configurations of photographic fixing on sheet material S through said holding part.In this example example, fixing roller 77 is the hollow rollers as the hollow rotating parts that formed by conductive metal.
Shown in Figure 51; Among the fixation unit 21A; Fixing roller 77 as warm-up mill 76, fixing roller 77 and backer roll 78 at least one (following is that representative describes with " fixing roller 77 ") as hollow roller; When connecting conductive fabric 6, make conductive fabric 6 deflections and with fixing roller 77 butts, make fixing roller 77 and bearing support 23 conductings as energising object side via conductive fabric 6.
One end of fixing roller 77 (the right part side of figure) and the other end (the left part side of figure) and example 3 likewise via bearing 22 by free rotary ground supporting.Conductive fabric 6 has the otch of fixing roller 77 perforations that can be replaced example 3 mandrel axis 73, and bearing support 23 contacts in the part beyond the otch with conductive fabric 6.
Bearing support 23 is identical with example 3 with the contact method of conductive fabric 6, with pressing component 7 resilient material of pressing component 7 is compressed through push conductive fabric 6 with bearing support 23, so conductive fabric 6 can stably contact with bearing support 23.Thus, stablely for a long time guarantee conducting.Among Figure 51, sequentially assemble bearing 22, pressing component 7, conductive fabric 6, bearing support 23 as figure according to this from left to right, constitute the pair unit (parts assembling) of fixation unit 21A.In the pair unit of fixation unit 21A, bearing support 23 joins with the zone that overlaps of conductive fabric 6 in the otch figure in addition of conductive fabric 6, thus, makes bearing support 23 and conductive fabric 6 conductings.
Shown in Figure 51, when inserting fixing roller 77 from direction of insertion 8, then fixing roller 77 connects the otch of the conductive fabric 6 that is arranged on fixation unit 21A pair unit, and conductive fabric 6 contacts with fixing roller 77 with deflected.At this moment, bearing support 23 is clamped by bearing 22 and bearing support 23 with conductive fabric 6 and is fixed, and utilizes fixing roller 77 to contact with bearing support 23 with conductive fabric 6 and can make fixing roller 77 and bearing support 23 conductings, formation fixation unit 21A.When body frame 51 sides that are installed in fixation unit 21A in this figure, then bearing support 23 joins with the conducting portion (not shown) of body frame 51, keeps the conducting relation.As stated, the above-mentioned conducting portion of the surface of fixing roller 77 and body frame 51 becomes the conducting relation, because body frame 51 is energized ground connection, so can make the ground wire grounded of fixing roller 77.
The rotary driving force from not shown driving mechanism is transmitted in the other end of fixing roller 77 (left part side among the figure), and fixing roller 77 is driven in rotation by each bearing 22 supporting.The direction of arrow rotation of fixing roller 77 in Figure 50 is on one side the sliding contact on one side on the outer peripheral face of fixing roller 77 of the flexed portion of conductive fabric 6 is rotated.At this moment, because conductive fabric 6 has electric conductivity and has suitable lubricity, so, can guarantee stable conducting for a long time even be that fixing roller 77 contacts also and can not produce unusual sound and oxidation with the slip object.Can remove between metal when sliding to reduce the coating conductive lubricant that sliding resistance is a purpose (for example electric conductivity railway grease etc.); So can also alleviate environmental loads, can realize and provide coloured image to form device 50 for the also good fixation unit 21A of environmental protection and Fig. 1.
For contacting of conductive fabric 6 and fixing roller 77; Be can access through conductive fabric 6 self deflection with fixing roller 77 suitable contact pressure, and its shape only is that conductive cloth 6 is added with this very simple processing of otch and just can obtains above-mentioned performance with simple shape.Conductive fabric 6 contains metal, but this is not a main material, so can not produce the poor flow that existing problem is promptly caused by unusual sound and oxidation.
Fixation unit 21A is not limited thereto, and only otherwise expect the advantage of configuration pressing component 7 and effect so far, then also can likewise remove pressing component 7 from fixation unit 21A with example 3.And be not limited to use the example with the same conductive fabric 6 of example 3, also can be suitable for Figure 51, at this moment above-mentioned advantage and effect are arranged certainly with any of the conductive fabric 6A～6M of conductive fabric 6 and note.
(example 4)
The example 4 of sheet material delivery unit is described with reference to Figure 52.Figure 52 (a) representes suitably to be configured in that sheet material from the feed roll 61 of Fig. 1 to exit roller 65 transports the road transports the stereographic map of for example alignment roller 62 configuration part of parts as sheet material, and Figure 52 (a) is the major part enlarged front view that is useful in this example alignment roller 62 configuration part.
Among Figure 52 (a), alignment roller 62 be for example form by conductive metal as the turning axle of turning axle 80 around be that high coefficient of friction material is the bunchiness shape that rubber etc. forms by relative sheet material.The both ends of the turning axle 80 of alignment roller 62 are used as bearing 25 free rotary ground supportings of support unit.
Example 4 compares with example 1, and difference is: mainly be on the basis of Fig. 2 iseikonia supporting body unit 10, to use the sheet material delivery unit 24 shown in Figure 52 (b).Except this difference, it is identical that the coloured image of example 4 and example 1 forms device 50.
Shown in Figure 52 (b); The sheet material delivery unit 24 of this example is by 25 free rotary ground supportings of bearing that for example are made up of rolling bearing etc. of free rotary ground supporting alignment roller 62 turning axles 80; The static energising that produces owing to frictional electrification between alignment roller 62 and the sheet material; Ground connection for example, turning axle 80 when connecting conductive fabric 6, make conductive fabric 6 deflections and with turning axle 80 butts, make turning axle 80 and bearing support 26 conductings as energising object side via conductive fabric 6.
Turning axle 80 1 ends of alignment roller 62 (the right part side of figure) and the other end (the left part side of figure) via bearing 25 by free rotary ground supporting.Each bearing 25 is fixed on the bearing support 26 that can be installed in these figure body frame 51 sides with freely loading and unloading.Bearing support 26 is by the good material of electric conductivity, and for example plate such as steel plate forms.Each bearing 25 is had the energising electric conductivity railway grease that for example earthing mechanism adopted of existing rotary body by inclosure, is not to have constituted the special structure that obtains electric conductivity, can use general general bearing and make.
Conductive fabric 6 has the otch that the turning axle 80 of the alignment roller 62 that can be replaced 14 of example connects, and bearing support 26 contacts in otch part in addition with conductive fabric 6.
As the contact method of bearing support 26 with conductive fabric 6; It is configuration pressing component 7 between bearing 25 and conductive fabric 6; And then with pressing component 7 resilient material of pressing component 7 is compressed through push conductive fabric 6 with bearing support 26, so conductive fabric 6 can stably contact with bearing support 26.Thus, stablely for a long time guarantee conducting.Among Figure 52 (a), sequentially assemble bearing 25, pressing component 7, conductive fabric 6, bearing support 26 as figure according to this from left to right, constitute the pair unit (parts assembling) of sheet material delivery unit 24.In the pair unit of sheet material delivery unit 24, bearing support 26 joins with the zone that overlaps of conductive fabric 6 in the figure beyond conductive fabric 6 otch, thus, makes bearing support 26 and conductive fabric 6 conductings.
Shown in Figure 52 (b), when inserting the turning axle 80 of alignment roller 62 from direction of insertion 8, then turning axle 80 connects the otch of the conductive fabric 6 that is arranged on sheet material delivery unit 24 pair units, and conductive fabric 6 contacts with the turning axle 80 of alignment roller 62 with deflected.At this moment, conductive fabric 6 is clamped by bearing 25 and bearing support 26 with pressing component 7 and is fixed, and utilizes turning axle 80 to contact with bearing support 26 with conductive fabric 6 and can make turning axle 80 and bearing support 26 conductings, formation sheet material delivery unit 24.When body frame 51 sides that are installed in sheet material delivery unit 24 in this figure, then bearing support 26 joins with the conducting portion (not shown) of body frame 51, keeps the conducting relation.As stated, the surface of the turning axle 80 of alignment roller 62 and the above-mentioned conducting portion of body frame 51 become conducting relation, because body frame 51 is energized ground connection, so can make turning axle 80 ground wire grounded of alignment roller 62.
Be set with in the other end (left part side among the figure) of the turning axle 80 of alignment roller 62 and the transmission of Fig. 3 and the picture supporting body shown in Figure 4 unit 10 similar structures gear (not shown) from not shown driving mechanism rotary driving force, the turning axle 80 of alignment roller 62 is by each bearing 25 supporting and rotate.The sliding contact on one side on the outer peripheral face of the turning axle 80 of alignment roller 62 of the flexed portion of conductive fabric 6 is rotated on one side.At this moment, because conductive fabric 6 has electric conductivity and has suitable lubricity, so, can guarantee stable conducting for a long time even be that turning axle 80 contacts also and can not produce unusual sound and oxidation with the slip object.Can remove between metal when sliding to reduce the coating conductive lubricant that sliding resistance is a purpose (for example electric conductivity railway grease etc.); So can also alleviate environmental loads, can realize and provide coloured image to form device 50 for the also good sheet material delivery unit of environmental protection 24 and Fig. 1.
For contacting of conductive fabric 6 and turning axle 80; Be can access through conductive fabric 6 self deflection with turning axle 80 suitable contact pressure, and its shape only is that conductive cloth 6 is added with this very simple processing of otch and the simple shape that forms and can access above-mentioned performance.Conductive fabric 6 contains metal, but this is not a main material, so can not produce the poor flow that existing problem is promptly caused by unusual sound and oxidation.
Sheet material delivery unit 24 is not limited thereto, and only otherwise expect the advantage of configuration pressing component 7 and effect so far, then also can remove pressing component 7 from sheet material delivery unit 24.And be not limited to use the example with the same conductive fabric 6 of example 1, also can be suitable for Figure 52 (b), at this moment above-mentioned advantage and effect are arranged certainly with any of the conductive fabric 6A～6M of conductive fabric 6 and note.
(example 5)
The example 5 of sheet material delivery unit is described with reference to Figure 53.The sheet material delivery unit 24Z of the example 5 shown in this figure is examples (of the present invention content 1 to 3, content of the present invention 33) of principle of the invention property.
The sheet material delivery unit 24Z of example 5 and the sheet material delivery unit of Figure 52 24 relatively, difference is: mainly be to use the conductive fabric 6Z that do not have otch and cutting-out portion (perforation abutting part) replacing conductive fabric 6 or conductive fabric 6,6A～6M and remove pressing component 7.
Among this figure, sequentially assemble bearing 25, conductive fabric 6Z, bearing support 26 as figure according to this from left to right, constitute the pair unit (parts assembling) of sheet material delivery unit 24Z.At this moment, make deflection, can constitute sheet material delivery unit 24Z through pushing the end face 80a of turning axle 80 1 ends to the conductive fabric 6Z that does not connect abutting part from direction of insertion 8.
This example for example can use earthing method (content 33 of the present invention) so the electrifying method of rotary body of the present invention we can say because as stated.
Replacement makes deflection constitute sheet material delivery unit 24Z through pushing the end face 80a of turning axle 80 1 ends to the conductive fabric 6Z that does not connect abutting part from direction of insertion 8; Among Figure 53; Under the state that stops in that turning axle 80 is not moved; The pair unit (parts assembling) of sheet material delivery unit 24Z is moved from the right side in the figure to the left, also can constitute and above-mentioned same sheet material delivery unit 24Z.That is, direction of insertion 8 is relative (above-mentioned each example also is the same with each variation).
In above-mentioned each example and each variation, be that conductive fabric is illustrated as example with the electroconductive component that uses the cloth shape, possess that flexible sheet electroconductive component is arranged is conductive sheet but also can use.As preferably selected its specific insulation of conductive sheet is 1.0 * 10 6Material below the Ω cm.
Above-mentioned each example 1～4, embodiment 1 and above-mentioned each variation 1～14 for example can be used earthing method (content 34 of the present invention) so the electrifying method of rotary body of the present invention we can say because as stated.
The energising of a kind of rotary body that is used (ground connection) method; Promptly by the image processing system of electrofax mode, electrostatic recording mode and return to zero any use; And use possesses the electrifying method of the rotary body that flexible cloth shape or sheet electroconductive component are arranged; Wherein, The turning axle that makes said rotary body, rotates with this rotary body and can support in the axle of said rotary body any rotatably and conducted via said electroconductive component the time by butt parts and energising (ground connection) object; Can be inserted by the end of butt parts with said by the length direction quadrature of butt parts this and connected; And be pre-formed be used to make said electroconductive component deflection when connecting in said end and with the perforation abutting part of said at least one by the otch of butt parts butt and cutting-out portion, then, through make said by the butt parts insert the said perforation abutting part of perforation make said energising (ground connection) object and said by the butt parts via the said electroconductive component ground connection of switching on.
The perforation abutting part that replacement forms at said electroconductive component in advance; This perforation abutting part be used to make said electroconductive component deflection when connecting in said end and with said at least one by the otch of butt parts butt and cutting-out portion; And at least one the band bladed instrument etc. of perforation abutting part can form otch and cutting-out portion freely is being set by the end of butt parts with loading and unloading, but be from the present invention's technological item of derivation easily.
With reference to Figure 54 and Figure 55, the 5b of triangle overshooting shape crimping contact portion (claw portion) that supplementary notes are arranged on ground plate 5 connects and is fixed on the position relation of boss 2c of the flange 2 of flange 2 with pushing conductive fabric 6D1.Figure 54 (a) is the front view of boss 2c position relation of (claw portion) 5b of crimping contact portion and flange 2 that is used for flange assembly 32 ground plates 5 of illustrative embodiment 1; Figure 54 (b) is used for explaining this flange assembly 32 when photoreceptor 1 inside is pressed into the major part exploded perspective view of the load that the 5b of crimping contact portion (claw portion) periphery of ground plate 5 receives.Figure 55 (a) representes that the cut-open view of flange assembly 32 state before photoreceptor 1 inside is pressed into Figure 55 (b) is that expression is a cut-open view that is pressed into the back state with flange assembly 32 to photoreceptor 1 inside.
Among Figure 54 and Figure 55, represented to replace constituting first example shown in Figure 8 uses the conductive fabric 6D1 of illustrated embodiments 1 such as Figure 19 and Figure 20 as the conductive fabric 6 of supporting body unit 10 example.Omitted the diagram of conductive fabric 6D1 and pressing component 7 among Figure 55 for simple and clearization of scheming.
In first example and embodiment 1 as stated; And shown in Figure 55 (b); Be flange assembly 32 that the inwall 1Aa of conductive base material 1A is when being pressed into, owing to be pressed into the 5b of crimping contact portion (claw portion) of ground plate 5 and ground plate 5 integrally bendings to the mother tube of photoreceptor 1.Make the 5b of crimping contact portion (claw portion) on the floor 5 that connects, the boss 2c position of flange 2 (returning part that also is ground plate 5 is the center of boss fixed claw 5c) phasing degree become about 90 degree; Even then the 5b of crimping contact portion partly is out of shape and the ground plate 5 crooked state that is self; Also displacement hardly of boss 2c part on the straight line that is positioned at the straight line quadrature that links deformed part; So can prevent the relaxing of boss fixed claw 5c of boss 2c and ground plate 5, can keep the stationary state of ground plate 5 securely.
Foregoing below is detailed.Shown in Figure 54 and Figure 55; The mother tube of the 5b of crimping contact portion (claw portion) through relative photoreceptor 1 at two positions that constitutes the ground plate 5 of flange assembly 32 is that the inwall 1Aa of conductive base material 1A deeply pricks into the 5b of crimping contact portion (claw portion) to install and fix ground plate 5 to photoreceptor 1 crimping, guaranteed the conducting of the conductive base material 1A of ground plate 5 and photoreceptor 1.Shown in Figure 55 (a), because the front end of the crimping contact 5b of portion is outstanding laterally from the outer peripheral face that flange 2 is pressed into portion, so when being pressed into the flange assembly 32 that is assembled with conductive fabric 6D1, deeply to the inwall 1Aa of the conductive base material 1A of photoreceptor 1.Therefore, shown in Figure 54 (b), flange assembly 32 when photoreceptor 1 is pressed into, the crimping contact 5b of portion of ground plate 5 accepts load F in the direction of arrow shown in this figure.Because the crimping contact 5b of portion accepts load F, so become the load F that ground plate 5 is accepted the direction of arrow, shown in Figure 55 (b), ground plate 5 self produces crooked.
Among Figure 54 (a); Be fixed on flange 2 to ground plate 5; The boss 2c set positions that becomes the slip-off preventing piece that is used to make ground plate 5 and conductive fabric 6D1 to be adjacent at Liang Chu; Be configured to relatively center line (straight line) through photoreceptor 1 center become through 3 points (center of boss 2c-photoreceptor 1-boss 2c) straight line SL1 point-blank, and the set positions of the crimping contact 5b of portion in the position of boss 2c relatively and phase place (angle) θ is the position of about 90 degree.At this, the center of said photoreceptor 1 is the meaning identical with the center of flange 2.Promptly set the straight line SL1 of the center-boss 2c of relative boss 2c-photoreceptor 1 for, and the straight line SL2 of the center-crimping contact 5b of portion through the crimping contact 5b-of portion photoreceptor 1 intersects (quadrature) with meeting at right angles.Set distance (position) R of ground plate 55 left and right sides 5b of crimping contact portion front ends for equalization respectively from straight line SL1 (center of photoreceptor 1) to ground plate.
The STA representation of the ground plate 5 when being pressed into the conductive base material 1A of photoreceptor 1 to flange assembly 32 is at Figure 55 (b).The crimping contact 5b of the portion allocation position of earth plate 5 is got into the shape of center (center of=flange 2) antipode (to the utmost point) configuration of relative photoreceptor 1; Flange assembly 32 when the conductive base material 1A of photoreceptor 1 is pressed into; The crimping contact 5b of portion of earth plate 5 is deep into the inwall 1Aa of conductive base material 1A; The crimping contact 5b of portion accepts load F, is centre-point earth plate 5 self bending with the position with the straight line SL2 quadrature of center-crimping contact 5b of portion by the crimping contact 5b-of portion photoreceptor 1.And set for the center (center of=flange 2) of the relative photoreceptor 1 in position of two crimping contact 5b of portion of ground plate 5 identical; And because the shape of ground plate 5 self is roughly symmetrical shape, so the position of the center 5d of ground plate 5 shown in Figure 55 (b) becomes crooked center.Therefore; The addendum modification of the crimping contact 5b of portion of ground plate 5 that when the conductive base material 1A of photoreceptor 1 is pressed into, is positioned at flange assembly 32 two ends is identical; Can be relatively with the straight line of straight line SL2 quadrature through ground plate 5 flexural center 5d left-right symmetric, and the flexural center 5d that can make ground plate 5 and the center of ground plate 5 are that the center of photoreceptor 1 is consistent.
Because ground plate 5 has above-mentioned shape and (is configured to the crimping contact 5b of the portion allocation position of ground plate 5 center (center of=flange 2) symmetry of relative photoreceptor 1; The shape of ground plate 5 self is roughly symmetrical shape; The angle of crimping contact 5b of portion and boss 2c is 90 degree), be the crooked shape of center and ground plate 5 so ground plate 5 becomes straight line SL1 with the center-boss 2c of boss 2c-photoreceptor 1.Therefore, in the flexural center of ground plate 5 the center 5d on the straight line SL1 and ground plate 5 does not almost have displacement, along with from leaving here, that is, then the displacement quantitative change is big near crimping contact portion 5b place.Owing to the position of the boss 2c that makes solid ground plate 5 is consistent with the straight line SL1 through flexural center 5d, so can suppress low to the deflection of ground plate 5 at the boss 2c of solid ground plate 5.Therefore, the relaxing of boss fixed claw (returning part) 5c of boss 2c and ground plate 5 can be prevented, and the fixing of ground plate 5 can be kept securely.
With reference to Figure 56～Figure 64, supplementary notes with as the metallic brush of comparative example relatively and the advantage point of the conducting stabilization of the conductive fabric that uses about the present invention.Figure 56 (a) is the front view of metallic brush 81, and Figure 56 (b) is the side view of metallic brush 81.
Metallic brush compiles bunchy to metal fibre, at first sight then sees and had a lot of contact points by the butt parts.What play a role but metallic brush is used for conducting in the metal fibre of bunchy only is the seldom part on surface, and the position that contacts with axle (by the butt parts) photoreceptor each metal fibre is a place.To this, the situation of conductive fabric is the shape of enrolling conducting fibre, because its surperficial convex-concave, so can have a plurality of positions that are coupling and touch with photoreceptor.Can have number of contacts through using conductive fabric with the sensitization axon its of metallic brush equal more than, increase the stabilization of conducting.Foregoing below is detailed.
The method of application of metallic brush at first is described.
Shown in Figure 56 (a), Figure 56 (b), metallic brush 81 is the thing of for example being restrainted pen and brush and sac like by stainless steel metal metal fibres 82 such as (following simply be designated as " SUS ").Concrete institute is exactly, metal fibre 82 be pooled to same direction and its end usefulness fixedly plate 83 rivet.Fixedly plate 83 can be SUS, also can be common metal, but generally improves the being adjacent to property with metal fibre 82 in order to rivet easily and to rivet, and uses as metal and soft and rustless aluminium.Thus, the metal fibre 82 of brush and sac like is conducted with the fixedly plate that keeps it 83.
Metallic brush with by the contact method of butt parts, roughly distinguishing has two kinds of methods.
(1) shown in Figure 57, the axle 85 that is promptly rotated by the butt parts relatively and make the method for metallic brush 81 parallel butts.The method that this is to use metallic brush 81 whole width is configured to make when contacting with axle 85 the leading section deflection of metallic brush 81.Thus, owing to the pressing force that axle 85 is added with metallic brush 81, so contact condition is stable.
(2) shown in Figure 58, counterrotating axle 85 and make the method for metallic brush 81A quadrature butt.This is to use the method for metallic brush 81A thickness, relatively axle 85 and make the central authorities of metallic brush 81A separate butt.Owing to the narrowed width that contacts than above-mentioned (1), so the contact area of metallic brush 81A reduces.
Among Figure 56～Figure 58, when symbol 84 is the brush assemblies of stating to flange 2 assemblings metallic brush 81,81A after making, be used to embed the mounting hole of the boss 2c of flange 2.
With reference to Figure 59, the concrete structure of the brush assemblies that metallic brush is installed is described.Shown in Figure 59 (a); Be assembled into the for example metallic brush 81A shown in Figure 58 the brush assemblies 320 (be used for be pressed into interim assembling flange) of flange 2 to photoreceptor; After any of two boss 2c that at first are embedded into rubber ring 86 flange 2, metallic brush 81A is installed from it.And then make through assembling ground plate 5 from it.Because ground plate 5 that kind as stated has boss fixed claw (returning part) 5c, can not come off so embed the boss 2c of flange.Utilize the compression of rubber ring 86 that the metal fibre 82 of metallic brush 81A is contacted with ground plate 5 with the fixedly plate 83 of riveted joint.This method is the structure of above-mentioned (2) " counterrotating axle 85 and the method for quadrature butt ".The structure of above-mentioned (2) is from axial installation fully, because the installation of part configuration is simple, so generally be used.
With reference to Figure 60 A, Figure 60 B, investigate the contact position and the position of metallic brush.Figure 60 A is used for explaining the contact position of metallic brush 81A metal fibre 82 parts and the 200 power microscope enlarged photographs at position; Figure 60 B (a) is used for explaining the metallic brush 81A contact position of all metal fibres 82 when equidirectional and the mode chart at position, and Figure 60 B (b) is contact position and the mode chart at position that is used for explaining when metallic brush 81A has a metal fibre 82 to tilt.
Is being that example is when describing with the metallic brush 81A of Figure 58 about what contact with metallic brush for example by the horizontal contact of butt parts; Actual in the metal fibre 82 of bunchy have a conducting effect with contact by butt parts (axle 85), only be positioned at by butt parts (spool 85) the surperficial metal fibre 82 of contact side.Promptly in the photo of Figure 60 A, be used for obtaining conducting and effectively then only limit to be positioned at the outermost metal fibre 82 of metallic brush 81A at the metal fibre 82 of bunchy.And metal fibre 82 integral body of brush and sac like are facing one direction, but one one metal fibre 82 is that direction is different or overlapping in fact separately.So, make and the part that contacted by the butt parts reduces owing to different 82 juxtapositions of metal fibre separately of direction occur concavo-convexly.
When with Figure 60 B (a), Figure 60 B (b) when explaining, original metal fibre 82 same directional words, the contact site is 6 points as Figure 60 B (a).But only because the direction of a metal fibre 82 is different, then contact point reduces, and becomes 4 points as Figure 60 B (b).In the metallic brush 81A of reality, also as the photo of Figure 60 A, be about 0.45mm length with the solid line of figure photo, the footpath of metal fibre 82 is about 0.015mm.If all when identical direction bunchy, the number of contacts when contacting in arbitrary site just becomes the 0.45mm/0.015mm=30 position to metal fibre 82.But shown in the photo of Figure 60 A, because the direction of one one metal fibre 82 is different separately, so even its number of contacts also is four positions, seven positions and greatly reduce in the place of same widths.
With reference to Figure 61 (a), Figure 61 (b), for example with the conductive fabric of Fig. 9 (a) be example explain that the conductive fabric that uses with the present invention contact by the horizontal contact of butt parts (spool 85).As stated, conductive fabric is the structure of enrolling conducting fibre, because the state that enrolls is inhomogeneous, so be not equally spaced contact position as horizontal contact site.In fact as the microphotograph of Figure 61 (a), Figure 61 (b), its number of contacts is five positions, six positions in the place of same widths.Has number of contacts with above-mentioned metallic brush equal extent as horizontal number of contacts.
With reference to Figure 62 (a), Figure 62 (b), explain contact with metallic brush by vertical contact of butt parts.The photo of Figure 62 (a), Figure 62 (b) is photos of plane situation by the butt parts.When metallic brush when being contacted by the butt parts, brush portion (metal fibre) as the photo of Figure 62 (a) deflection and with contacted by the butt parts.As the photo of Figure 62 (b), also be the intrafascicular outermost metal fibre of metallic brush with what contacted by the butt parts.If according to considering that with a metal fibre that is contacted by the butt parts then the position in metal fibre contact separately is a point.
With reference to Figure 62 (c), Figure 62 (d), explain contact with conductive fabric that the present invention uses by vertical contact of butt parts.The photo of Figure 62 (c), Figure 62 (d) is photos of plane situation by the butt parts.When conductive fabric when being contacted by the butt parts, deflection as the photo of Figure 62 (c) and with contacted by the butt parts.As the photo of Figure 62 (c), the deflection contact.Since conductive fabric be woven into conducting fibre latticed, so the surface has convex-concave.Because at conductive fabric is that protruding part contacts when being contacted by the butt parts, so the contact site has a plurality of (being four in the photo).
And then about the cross section of conductive fabric, the microphotograph of 63A with the aid of pictures just can be understood the situation of convex-concave.Each cross section of conductive fabric (B-B, A-A) image is shown in Figure 63 B.
Content according to above explanation; Among Figure 64, suppose when metallic brush is promptly contacted by the butt parts with the axle 40 of cylinder with conductive fabric equally, shown in Figure 64 (a); Relative with axle 40 scopes that contacts and position 40 of metallic brush axially be in a straight line, and become the point-like of spot.
Shown in Figure 64 (b), conductive fabric and axle 40 scopes that contacts and position be spools 40 axial and have width relatively, and become the point-like of spot.Like this with as identical by the situation of axle 40 contacts of butt parts under, conductive fabric is metallic brush and contact point more than having on an equal basis relatively also.
[embodiment 2]
With reference to Figure 65～Figure 69, explain that dorsal part at conductive fabric accompanies elastic body (PET sheet) and seek the embodiment 2 of contact stabilization with strong butt.Figure 65 (a) is the exploded perspective view of illustrative embodiment 2 flange modular constructions, and Figure 65 (b) is the figure of illustrative embodiment 2 flange modular constructions, is the front view that ground plate 5 preceding states are installed in expression.Figure 66 (a), Figure 66 (b), Figure 66 (c) are with a part of dissecing flange 2 and the photo of representing with stereographic map the assembling of the flange assembly among the embodiment 2 passing state.
First example and embodiment 1 as stated only are to be added with otch at conductive fabric and when being contacted by the butt parts, a little less than the pressing force, to have owing to high temperature placement etc. contacts unsettled situation.Improve relatively by the pressing force of butt parts so in embodiment 2, append other elastic bodys through conductive cloth, make with by the contact stabilizationization of butt parts.Be exactly specifically between ground plate and conductive fabric to be clipped in polyethylene terephthalate (following simply be designated as " PET ") sheet between ground plate and the conductive fabric with state that must residual direct contact portion.
The only problem points and worry item of conductive fabric remark additionally.Conductive cloth add otch and make crooked deflection and with the method that contact by the butt parts in, to only being pushing of causing by the deflection of conductive fabric by the contact of butt parts pressure.The pressing force that is caused by the flexible and elastic recovering force of conductive fabric self is little, and at high temperature placing also has the situation that has custom (habit) that produces when waiting.If conductive fabric becomes this state, can predict then that with unstable the situation that can not obtain conducting is also arranged by contacting of butt parts.So this example is provided with the mechanism of improving pressing force as follows in order to make the conducting stabilization more than embodiment 1.
Shown in Figure 65 (a), the basic structure of embodiment 2 is that the conductive fabric assembly 33 (with reference to the conductive fabric assembly 33 shown in Figure 20 etc.) of embodiment 1 explanation is installed at flange 2, and installs above that as elastomeric PET sheet 37.And being pressed into ground plate 5 from PET sheet 37, is the structure that between flange 2 and ground plate 5, sandwiches conductive fabric 6D1 and PET sheet 37.
Shown in Figure 65 (b) and Figure 66 (a); PET sheet 37 is to use transparent in the present embodiment; Peripheral shape is near foursquare rectangle, have each peripheral shape than conductive fabric 6D1 and ground plate 5 (particularly boss with hole 6m and boss fixed claw 5c on every side near) little peripheral part.That is, the characteristics of PET sheet 37 peripheral shape are to be to form for a short time of the boss that does not reach conductive fabric 6D1 this point of periphery with the boss fixed claw 5c of hole 6m and ground plate 5.Thus; Ground plate 5 when flange 2 is installed; When the boss fixed claw 5c that makes ground plate 5 engages to engagement with each boss 2c of flange 2; With the immediate part of fixed position of the boss fixed claw 5c of ground plate 5 conductive fabric 6D1 is contacted with ground plate 5, so conductive fabric 6D1 and ground plate 5 are adjacent to reliably, conducting is stable.Be formed with the roughly the same otch 37a of shape with the otch 6b of conductive fabric 6D1 in the central authorities of PET sheet 37.
Shown in Figure 65 (a), PET sheet 37 when flange 2 is installed, shown in Figure 65 (b), Figure 66 (b), Figure 66 (c), such as stated position that conductive fabric 6D1 and ground plate 5 are directly contacted that is provided with.Thus, even be clipped in PET sheet 37 between conductive fabric 6D1 and the ground plate 5, conductive fabric 6D1 also directly contacts and conducting with ground plate 5.The state that Figure 66 (c) expression connects axle 4 opposing flanges assembly 32A.Recognize axle 4 and conductive fabric 6D1 while the state of contact of pushing of accepting PET sheet 37 from Figure 66 (c), and recognize that also PET sheet 37 has the function of pushing conductive fabric 6D1.
PET sheet 37 if between conductive fabric 6D1 and ground plate 5 with spools 4 the state of can connecting exist just can, need not be fixed on conductive fabric 6D1 and ground plate 5 to PET sheet 37.But the otch 37a that makes PET sheet 37 does not depart from the ground phase place with the otch 6b of conductive fabric 6D1 and conforms to; In order to seek the simplification of mould and manufacturing procedure, the production process that for example also can add PET sheet 37 in the part of conductive fabric assembly 33 manufacturing procedures shown in Figure 24 with set suitable detent mechanism such as embossing.
Curve shown in chart shown in Figure 68 and Figure 69, expression be only conductive fabric, the thickness of PET sheet change over 0.075mm and this band PET sheet of two kinds of 0.125mm conductive fabric this add up to three kinds of test films (measuring article) to push the test findings of load test.
Row note test condition.Shown in Figure 67 (a), Figure 67 (b), Figure 70; The shape of test film (measuring article) is; The shape of conductive fabric is width 4mm, highly be the triangular boss front end of 5mm from being decorated with that end that hacures represent begins and have; Fixing its end under the state of (maintenance fixed part), shown in Figure 67 (b), use digital force gauge to measure the gap is deformed to and push load (pressing force) when becoming the 0.6mm position.Under the situation of the conductive fabric that has the PET sheet, make the PET sheet identical with the shape of conductive fabric, that kind disposes each shown in Figure 67 (b), with the overlapping state of conductive fabric under be fixed on testing table 38 (maintenance fixed part) to its end and measure.But PET sheet and conductive fabric only are overlapping rather than bonding states.
Gap shown in Figure 67 (b): 0.6mm pushes among Figure 70 that load measures state in expression, is meant that the diagram abridged keeps the distance between the mensuration accessory left surface of right flank (being the equal of the right flank that the bulk shown in Figure 67 (b) keeps fixed part) and digital force gauge of fixed part.Digital force gauge generally has sale in market, use rated capacity 2.0N, display resolution 0.001N specification.
Through clamping the lamellar elastic body of PET sheet, can apply stable pressing force by conductive cloth.
In the contact condition stabilization that high temperature is placed; Sometimes conducting is unstable under the situation that conductive fabric is only arranged; But clamp the flange assembly of the PET sheet of thickness 0.075mm and 0.125mm; Under any circumstance all conducting is stable, not confirm that any non-steady state is not arranged, admit with the situation that conductive fabric is only arranged heterodyne (poor intentionally) arranged.
According to above-mentioned test findings etc.; In order to keep the stable contact condition of conductive fabric 6D1 for axle 4; To clamp lamellar elastic body such as PET sheet 37 be effective suchly to improve pressing force; Thickness for PET sheet 37 is the object of 0.075mm and 0.125mm, has confirmed to have sufficient function by test at least.
As stated; Example through comprising specific embodiment has been explained the present invention; But it is illustrative that the disclosed technical scope of the present invention is not limited to institute such as above-mentioned example; Also can be they appropriate combination, within the scope of the invention according to its necessity and purpose, purposes etc. and the situation that can constitute various examples and variation or embodiment is that the insider understands.
In above-mentioned each example and each variation illustration the energising mechanism earthing mechanism for example of the employed specific rotary body of image processing system of electrofax mode; But be not limited thereto; The present invention is in the image processing system of the image processing system of the image processing system of electrofax mode, electrostatic recording mode or return to zero, and switching at needs certainly, for example the rotary body of ground connection can be by mutatis mutandis.At this; Said " image processing system of electrofax mode, electrostatic recording mode and return to zero " is meant: form and carry reproducible images such as toner image based on purpose image information as supporting body through imaging processing such as electrofax processing, electrostatic recording processing, magnetic recording processing at Electrophtography photosensor, electrostatic recording dielectric, magnetic recording magnetic etc.; Utilization has applied the replica biased suitable duplicating mechanism such as roller and corona discharger that duplicates and has duplicated this reproducible image to sheet-shaped recording medium sides such as duplicating materials, the duplicating machine of this copy mode, facsimile recorder, printer, draught machine etc. or possess the image processing systems such as compounding machine of their multiple functions.
Symbol description
1 photoreceptor, 2 flanges (vibrating part), 3 gears
4,16 (by the butt parts) 5 ground plates (metallic electroconductive component)
5p flat part (being mounted portion) 6,6A～6M, 6Z conductive fabric (cloth shape electroconductive component)
6a, 6b otch 6e, 6g, 6h cutting-out portion 7 pressing components
8 butt directions, direction of insertion 10 picture supporting body unit
11 charged roller (constituting charged mechanism), 12 developer rolls (formation developing mechanism)
13 cleaning baldes (formation cleaning mechanism), 14 frameworks
15,15A intermediate duplication tape cell (tape cell) 18 backing plates
19,22,25 bearings 21,21A fixation unit
23,26 bearing supports 24,24Z sheet material delivery unit
32,32A flange assembly 33 conductive fabric assemblies
37PET sheet (elastic body)
50 coloured images form device (image processing system)
51 body frame (device body of image processing system)
53 intermediate duplication bands (intermediate duplication body), 55 driven rollers (driven in rotation parts)
56 driven vollers (driven rotary part), 58 handle boxes
62 alignment rollers 64,64A fixing device
70,76 warm-up mills (heater block), 72,78 backer rolls (pressure-producing part)
73 mandrel axis (turning axle), 74 photographic fixing bands, 80 turning axles (turning axle)
S sheet material, sheet-shaped recording medium
Patent documentation 1: TOHKEMY 2000-48873 communique
Patent documentation 2: TOHKEMY 2007-57945 communique
Patent documentation 3: japanese kokai publication hei 11-249495 communique
Patent documentation 4: No. 3950635 communique of Jap.P..

Claims (40)

1. the energising mechanism of a rotary body, it is used for image processing system, it is characterized in that,
Make the part and energising object side butt of cloth shape or sheet electroconductive component; In turning axle that the another part that makes said electroconductive component rotates with said rotary body, with this rotary body and the axle that can support said rotary body rotatably any by the butt parts with the face butt; Thus, said energising object and said is switched on by the butt parts.
2. the energising mechanism of rotary body as claimed in claim 1 is characterized in that,
Said electroconductive component deflection and with said by butt parts butt.
3. the energising mechanism of rotary body as claimed in claim 2 is characterized in that,
Said butt direction by the said relatively electroconductive component of butt parts is the direction identical with the deflection direction of this electroconductive component.
4. like the energising mechanism of each described rotary body of claim 1 to 3, it is characterized in that,
Said electroconductive component has otch, and it can connect said by the butt parts, and said make said electroconductive component deflection when being connected by the butt parts and with said by butt parts butt.
5. the energising mechanism of rotary body as claimed in claim 4 is characterized in that,
Said otch has been formed a plurality of, said can be when being connected at a plurality of positions and said by butt parts butt by the butt parts.
6. the energising mechanism of rotary body as claimed in claim 5 is characterized in that,
The length of said a plurality of otch can be imitated said this outer shape by the butt parts when being connected by the butt parts and adjusted, from said by the kernel of section of butt parts along with being formed shortly near said outer shape.
7. the energising mechanism of rotary body as claimed in claim 5 is characterized in that,
Said otch is made up of a plurality of first radial incisions that the substantial middle from said electroconductive component is radial extension.
8. the energising mechanism of rotary body as claimed in claim 7 is characterized in that,
Have a plurality of second radial incisions, its length than first radial incision is short, and change is radial extension with the phase place of first radial incision from said central authorities around said central authorities.
9. the energising mechanism of rotary body as claimed in claim 8 is characterized in that,
The central authorities of said second radial incision are located at the position of opening partially from the substantial middle of said electroconductive component.
10. like the energising mechanism of each described rotary body of claim 7 to 9, it is characterized in that,
First or second radial incision uniformly-spaced disposes the otch that adjoins each other around the central authorities of first or second radial incision.
11. the energising mechanism like each described rotary body of claim 1 to 3 is characterized in that,
Said electroconductive component has cutting-out portion, and it can be connected by the butt parts said, and said make said electroconductive component deflection when being connected by the butt parts and with said by butt parts butt,
Said cutting-out portion be included in said when being connected by the butt parts with said electroconductive component butt state under the shape of substantial line contact site.
12. the energising mechanism of rotary body as claimed in claim 11 is characterized in that,
Said electroconductive component has a plurality of radial incisions that are radial extension from the substantial middle of said cutting-out portion.
13. the energising mechanism like each described rotary body of claim 1 to 3 is characterized in that,
Said electroconductive component has and can be connected by the butt parts said, and said make said electroconductive component deflection when being connected by the butt parts and with said by the cutting-out portion of butt parts butt,
The shape of said cutting-out portion is, said make when being connected by the butt parts with the butt state of said electroconductive component along with towards said by the kernel of section of butt parts and the butt area reduces.
14. the energising mechanism like each described rotary body of claim 4 to 13 is characterized in that,
Said electroconductive component is the conductive fabric that constitutes by the cloth shape material of at least a fiber of pet fiber, nylon fiber and dacron and nickel and copper braiding.
15. a picture supporting body unit is characterized in that,
Energising mechanism with each described rotary body of claim 4 to 14,
Said rotary body has the Electrophtography photosensor layer by on cylindric conductive base material, possessing, electrostatic recording dielectric layer and magnetic recording magnetic layer any constitute as supporting body,
Possess the vibrating part that is fixed at least one end of said picture supporting body,
The said said axle that can be supported said picture supporting body rotatably by connecting the central part of said vibrating part by the butt parts constitutes,
Said axle when connecting said electroconductive component, make this electroconductive component deflection and with this butt,
Possess the metallic electroconductive component, its base end part contacts and is installed in said vibrating part with said electroconductive component, and leading section is fixed on said conductive base material inwall,
Said conductive base material is switched on contacting of said electroconductive component by said metallic electroconductive component with said beam warp.
16. picture supporting body as claimed in claim 15 unit is characterized in that,
Have pressing component, its said electroconductive component is pushed to said metallic electroconductive component.
17. picture supporting body as claimed in claim 16 unit is characterized in that,
Said pressing component is the non-metal elastomers that comprises rubber, sponge.
18. a handle box is at least one mechanism one supporting of from as supporting body, charged mechanism, cleaning mechanism and developing mechanism, selecting, and the handle box that freely loads and unloads of image forming device body relatively, it is characterized in that,
Has each described picture supporting body unit of claim 15 to 17.
19. an image processing system is characterized in that, possesses each described picture supporting body unit of claim 15 to 17 or the described handle box of claim 18.
20. tape cell; It is a belting; This belting possesses band that the ring-type of carrying and transporting duplicating image or reproducible image is arranged and a plurality of rotary parts of this band of reeling, and at least one in said a plurality of rotary parts is the driven in rotation parts, and possesses the driving mechanism that drives said driven in rotation parts and support the driven rotary part of said band with these driven in rotation parts; It is characterized in that
At least one of said driven in rotation parts and said driven rotary part is the hollow rotating parts that possess cylindric conductive base material,
Energising mechanism with each described rotary body of claim 4 to 14,
Said rotary body is made up of said hollow rotating parts,
Possess the vibrating part that is fixed at least one end of said hollow rotating parts,
The said said axle that can be supported said hollow rotating parts rotatably by connecting the central part of said vibrating part by the butt parts constitutes,
Said axle when connecting said electroconductive component, make this electroconductive component deflection and with this butt,
And, possessing the metallic electroconductive component, its base end part contacts and is installed in said vibrating part with said electroconductive component, and leading section is fixed on said conductive base material inwall,
Said conductive base material is switched on contacting of said electroconductive component by said metallic electroconductive component with said beam warp.
21. tape cell as claimed in claim 20 is characterized in that,
Have pressing component, its said electroconductive component is pushed to said metallic electroconductive component.
22. tape cell as claimed in claim 21 is characterized in that,
Said pressing component is the non-metal elastomers that comprises rubber, sponge.
23. tape cell; It is a belting; This belting possesses band that the ring-type of carrying and transporting duplicating image or reproducible image is arranged and a plurality of rotary parts of this band of reeling, and at least one in said a plurality of rotary parts is the driven in rotation parts, and possesses the driving mechanism that drives said driven in rotation parts and support the driven rotary part of said band with these driven in rotation parts; It is characterized in that
Energising mechanism with each described rotary body of claim 4 to 14,
Saidly constituted by butt parts at least one by said driven in rotation parts and said driven rotary part,
At least one of said driven in rotation parts and said driven rotary part when connecting said electroconductive component, make this electroconductive component deflection and with at least one butt of said driven in rotation parts and said driven rotary part, make at least one and said energising object of said driven in rotation parts and said driven rotary part come conducting via said electroconductive component.
24. tape cell as claimed in claim 23 is characterized in that,
Said band be as the intermediate duplication body the intermediate duplication band, possess Electrophtography photosensor layer, electrostatic recording dielectric layer and magnetic recording magnetic layer any as the supporting body band and as duplicate transport body duplicate any of moving belt.
25. fixation unit; It is a fixing device; This fixing device has the heater block that possesses thermal source and elastic layer and forms the pressure-producing part of holding part to this heater block crimping, and the sheet-shaped recording medium of transporting the duplicating image that is formed with not photographic fixing makes through said holding part, makes the duplicating image photographic fixing of the not photographic fixing on the sheet-shaped recording medium; It is characterized in that
Energising mechanism with each described rotary body of claim 4 to 14,
Be equipped with said turning axle at least one of said heater block and said pressure-producing part,
Saidly constituted by at least one said turning axle that sets at said heater block and said pressure-producing part by the butt parts,
The said turning axle of at least one of said heater block and said pressure-producing part when connecting said electroconductive component, make this electroconductive component deflection and with said turning axle butt, make this turning axle and said energising object come conducting via said electroconductive component.
26. fixation unit; It is a fixing device; This fixing device have ring-type photographic fixing band, built-in thermal source heater block, with this heater block set up the fixing member of said photographic fixing band, via this fixing member to the crimping of said photographic fixing band and form the pressure-producing part of holding part, the sheet-shaped recording medium of transporting the duplicating image that is formed with not photographic fixing makes the duplicating image photographic fixing of the not photographic fixing on the sheet-shaped recording medium through said holding part; It is characterized in that
Energising mechanism with each described rotary body of claim 4 to 14,
Be equipped with said rotary body at least one of said heater block, said fixing member and said pressure-producing part,
Saidly constituted by at least one said rotary body that sets at said heater block, said fixing member and said pressure-producing part by the butt parts,
At least one of said heater block, said fixing member and said pressure-producing part when connecting said electroconductive component, make this electroconductive component deflection and with at least one butt of said heater block, said fixing member and said pressure-producing part, make at least one and said energising object of said heater block, said fixing member and said pressure-producing part come conducting via said electroconductive component.
27. like claim 25 or 26 described fixation units, it is characterized in that,
Have pressing component, its said electroconductive component is pushed to said energising object side.
28. fixation unit as claimed in claim 27 is characterized in that,
Said pressing component is the non-metal elastomers that comprises rubber, sponge.
29. sheet material delivery unit; It is the sheet material conveyer; This sheet material conveyer is provided in sheet-shaped recording medium by supporting and transports the support unit free rotary ground supporting with the turning axle that transports parts; Switching on, it is characterized in that by the said static that frictional electrification produced that transports between parts and the sheet-shaped recording medium
Energising mechanism with each described rotary body of claim 4 to 14,
Said turning axle constitutes by being provided in the said electric conductivity turning axle that transports parts,
Saidly constituted by said turning axle by the butt parts,
Said turning axle when connecting said electroconductive component, make this electroconductive component deflection and with said turning axle butt, make this turning axle and said energising object come conducting via said electroconductive component.
30. sheet material delivery unit as claimed in claim 29 is characterized in that,
Have pressing component, its said electroconductive component is pushed to said energising object side.
31. sheet material delivery unit as claimed in claim 30 is characterized in that,
Said pressing component is the non-metal elastomers that comprises rubber, sponge.
32. image processing system; It is characterized in that having: at least one unit of each described tape cell of claim 20 to 24, each described fixation unit of claim 25 to 28 and each described sheet material delivery unit of claim 29 to 31.
33. the electrifying method of a rotary body, it is used to image processing system and uses cloth shape or sheet electroconductive component, it is characterized in that,
The turning axle that makes said rotary body, rotates with this rotary body and can support any conducted via said electroconductive component with the energising object by the butt parts in the axle of said rotary body rotatably the time is through making said energising object and said switched on via said electroconductive component by the butt parts being touched by the end face of butt parts and said electroconductive component with said by the length direction quadrature of butt parts this.
34. the electrifying method of a rotary body, that it is used by image processing system and use cloth shape or sheet electroconductive component is characterized in that,
The turning axle that makes said rotary body, rotates with this rotary body and can support in the axle of said rotary body any rotatably and conducted via said electroconductive component with the energising object time by the butt parts; Can be being connected by the end of butt parts with said by the length direction quadrature of butt parts this; And be pre-formed when connecting said end, be used to make said electroconductive component deflection and with the perforation abutting part of said at least one by the otch of butt parts butt and cutting-out portion; Then, saidly connected said perforation abutting part by the butt parts said energising object and said is switched on via said electroconductive component by the butt parts through making.
35. one kind with face and by the cloth shape of butt parts butt or sheet electroconductive component.
36. the described electroconductive component of claim 35 is characterized in that,
Said electroconductive component deflection and with said by butt parts butt.
37. the described electroconductive component of claim 36 is characterized in that,
Said electroconductive component has otch, and it can be connected by the butt parts by said, and when this is connected by the butt parts, make said electroconductive component deflection and with said by butt parts butt.
38. the described electroconductive component of claim 37 is characterized in that,
Said otch has been formed a plurality of, said can be when being connected at a plurality of positions and said by butt parts butt by the butt parts.
39. the described electroconductive component of claim 38 is characterized in that,
Said otch is made up of a plurality of first radial incisions that the substantial middle from said electroconductive component is radial extension.
40. the described electroconductive component of claim 39 is characterized in that,
Have pressing component, its said electroconductive component with said by the part different at different position and different of butt parts butt, pushed to said said electroconductive component by the butt parts.
CN201110276775.8A 2010-09-17 2011-09-19 The electrical conduction mechanism of rotary body, as electrifying method and the electroconductive component of supporting body unit, image processing system and rotary body Active CN102436157B (en)

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JP2002062759A (en) * 2000-08-17 2002-02-28 Ricoh Co Ltd Photoreceptor and image forming apparatus using the same
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