CN1728010A - Developing apparatus, process cartridge and image forming apparatus and assembling method of developing apparatus - Google Patents
Developing apparatus, process cartridge and image forming apparatus and assembling method of developing apparatus Download PDFInfo
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- CN1728010A CN1728010A CN 200510089558 CN200510089558A CN1728010A CN 1728010 A CN1728010 A CN 1728010A CN 200510089558 CN200510089558 CN 200510089558 CN 200510089558 A CN200510089558 A CN 200510089558A CN 1728010 A CN1728010 A CN 1728010A
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- wall portion
- scraper
- developing apparatus
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Abstract
In the invention, a scraper back sealing member is gripped between a plate spring member of a scraper unit and a scraper assembling member. The scraper back sealing member integrally has: side parts which extends up and down on two end parts in the length direction of the plate spring member, and a connecting part which is arranged on the middle part in the length direction of the plate spring member to connect the two side parts. An upper sealing member for sealing is gripped between an opening part of a frame body, and an upper assembling part which extends in the length direction of the opening part and has a width in the fore and back direction, and the extending part of the anti-bending member of the scraper unit.
Description
Technical field
The present invention relates to developing apparatus, handle box, be provided with the imaging device of developing apparatus and handle box and the assemble method of developing apparatus.
Background technology
In the imaging device of laser printer etc., by forming electrostatic latent image, and developer is offered electrostatic latent image from developing apparatus at photosensitive drum surface, thus developer is looked like to be carried on the surface of photosensitive drums.Then, by this developer is looked like to print on the paper, thereby realize image is formed on the paper.
Developing apparatus has: the framework of the peristome of oriented photosensitive drums opening; Be housed in the developer roll of the bearing developer in this framework; Bed thickness at the developer that developer roll carried is limited the scraper (layer thickness regulating member) of usefulness.Developer roll, on the peristome of framework, the state that exposes with the part on surface rotatably is being supported.Again, blade geometry is axially extended lamellar to developer roll, and its upper end is supported by framework, and the bottom is rasterized the surperficial crimping of roller.Again, the developer in the framework is supplied to by developing roller surface, along with the rotation of developer roll, by between the surface of scraper and developer carrier and become certain thickness thin layer and be carried on the developing roller surface.Be carried on the lip-deep developer of developer roll, when contacting, offer formed electrostatic latent image on the surface of photosensitive drums with the surface of photosensitive drums.
On such developing apparatus, the developer in the framework enters the back side (face opposite with the subtend face of developer roll) of scraper, spreads inflow from the back side of scraper to the upper end of scraper, leaks out between the upper end of scraper and framework sometimes.Therefore, in imaging device in the past,, flow into caused seepage, be provided with a plurality of containment members for preventing that developer from spreading from the scraper back side at the back side of scraper.Promptly, the back side at scraper, be provided with the support portion of supporting scraper, if stride across containment member by the formed layer difference in support portion and the scraper back side and be provided with, in the part of layer difference, will generate the gap between the containment member and the scraper back side, therefore, a plurality of containment members are arranged to not stride across layer poor (for example, Japanese publication spy opens the reference of 2001-60040 communique).But, in order to prevent to spread the seepage that flows into the developer that causes conscientiously, just each containment member must be set accurately from the back side, passageway, just cumbersome in the configuration of containment member.
In imaging device in the past, be provided with doctor back face seal member at the back side of scraper and be used for preventing spreading the developer seepage that flows into and cause (for example, Japanese publication spy open 2000-75657 communique with reference to) from the scraper back side again., in recent years,, wish to reduce the size of developing apparatus height (above-below direction) in order to pursue the compact conformationization of imaging device.In order to reduce the size of developing apparatus height, just must reduce the size of scraper height, also must reduce the height dimension of doctor back face seal member thus.But if reduce the height dimension of doctor back face seal member, the containment member width that is positioned at the short transverse at the scraper back side just diminishes, and sealing property reduces, with regard to being easy to take place owing to spread such unhappy of developer seepage that inflow causes from the scraper back side.
Summary of the invention
The objective of the invention is to, the developing apparatus and handle box that can reduce the configuration time that containment member spends and the imaging device with described developing apparatus and handle box are provided.
Another object of the present invention is, even provide the size that has reduced the layer thickness regulating member short transverse still can prevent conscientiously from the developing apparatus and the handle box of framework and layer thickness regulating member seepage developer and the imaging device with described developing apparatus and handle box.
Another purpose of the present invention is, even provide the size that has reduced layer thickness regulating member short transverse (relative direction of the 1st wall portion and developer carrier) still can prevent conscientiously from the assemble method of the developing apparatus of framework and layer thickness regulating member seepage developer.
The developing apparatus of the 1st aspect has as lower member: the framework with rimiform peristome and resettlement section (wherein, the resettlement section communicates with peristome and accommodates developer); Be arranged on the framework, perpendicular and with the communication direction of peristome and resettlement section along wall portion that the length direction of peristome extends; Along the configuration of the length direction of peristome, rotatably be supported on the developer carrier of the offside of relative with wall portion, as to be positioned at communication direction resettlement section; Between wall portion and developer carrier along wall portion configuration, the 1st distolateral portion of an end is configured in the relative direction of wall portion, the 2nd distolateral pushing developer carrier of the other end, be developed the carrying of agent supporting body be used for limiting the developer scraper; Be configured in the opposite face of scraper wall portion, the support portion of support scraper; Be used for gap between sealed wall portion and the scraper and containment member with following characteristics, described containment member is positioned at opposite face, be configured to get along well the supporting member overlaid and have at the both ends of scraper length direction respectively along with intersect vertically sidepiece that direction extends and be connected these connecting portion at the length direction central portion of length direction.
Because the sidepiece of containment member can prevent that developer is from seepage between scraper length direction both ends and the framework wall portion.Again, because the connecting portion of containment member can prevent that developer is from seepage between scraper length direction central portion and the framework wall portion.Therefore, in the gamut of scraper length direction, can prevent that developer is from seepage between scraper length direction and the wall portion.And the containment member supporting member that is configured to get along well coincides, because and generation very close to each other between the opposite face of scraper, just the wall portion of seal blades and framework reliably.Again, the sidepiece of containment member and connecting portion are to form one, thus the quantity of containment member have 1 just enough, just can accurately and simply be configured at opposite face with scraper wall portion.Can reduce the configuration formality that containment member spent thus.
The developing apparatus of the 2nd aspect, in aspect the 1st, at opposite face, be provided with the configuration headspace that is used to dispose containment member around the supporting member, containment member is used in the headspace in the configuration of opposite face, and is relative with the support portion material, disposed connecting portion at the 1st distolateral, disposed sidepiece respectively in the length direction both sides.At the opposite face of scraper, overlap with the headspace supporting member that therefore can containment member is configured to get along well fairly simplely owing to be provided with the configuration that is used to dispose containment member.Thereby, can alleviate the configuration time that containment member spent more.
The developing apparatus of the 3rd aspect be aspect the 1st in, at opposite face, in the 2nd end side, be provided with the configuration headspace that is used for containment member with respect to the 1st supporting member, containment member is configured in the configuration of opposite face with in the headspace.At the opposite face of scraper, owing to be provided with the configuration headspace that is used to dispose containment member, the supporting member that therefore can containment member is configured to get along well overlaps fairly simplely.Thereby, can alleviate the configuration time that containment member spent more.
The developing apparatus of the 4th aspect is in aspect the 1st～the 3rd any one, containment member, and the relative direction in scraper and wall portion has the thickness also bigger than the thickness of supporting member.Relative direction in scraper and framework wall portion, because the thickness of containment member is bigger than the thickness of supporting member, if with scraper to wall portion near touching the position of wall portion and be provided with until supporting member, between scraper and wall portion, containment member just is held with confined state so.Therefore, just can improve the sealing that causes owing to containment member, just can prevent reliably that also developer is from seepage between scraper and the framework wall portion.
The developing apparatus of the 5th aspect is in aspect the 1st～the 4th any one, has the scraper of perforation and supporting member and with scraper and supporting member fixed part fastened to each other.Because fixed part can interfix between scraper and the supporting member.
The developing apparatus of the 6th aspect be aspect the 5th in, wall portion form avoid with from the outstanding part of the supporting member of fixed part to the recess that contacts.Not only can avoid from the supporting member outshot of fixed part and the collision between the wall portion, and can make and contact between supporting member and the wall portion very close to each otherly.
The developing apparatus of the 7th aspect is that fixed part is made of screw in the 5th and the 6th aspect, and wherein, screw has head of screw and from the thread spindle that head of screw extends out, assembled the gasket seal between head of screw and scraper.Because gasket seal is sealed between head of screw and the scraper.Therefore, can prevent to infiltrate thread spindle and penetrate developer between the screw hole of thread spindle from seepage between head of screw and the scraper.Therefore, just can prevent the seepage of developer reliablely.
The developing apparatus of the 8th aspect is in the 1st～the 7th any one, to be matrix material with the polyethylene terephthalate, and the assembling double-sided belt is used for containment member is fixed at least one side in wall portion and the scraper.With the polyethylene terephthalate is the double-sided belt of matrix material, because hardness is big, before with respect to wall portion or scraper fixing seal member, if in advance containment member is being pasted on double-sided belt, during with respect to wall portion or scraper fixing seal member, even containment member is applied bigger power, also can prevent the distortion (extension) of containment member.Therefore, can accurately containment member pasted the position of pasting on wall portion or scraper.
The developing apparatus of the 9th aspect be aspect the 8th in, double-sided belt is partly being pasted with respect to containment member.Owing to double-sided belt is partly being pasted the formality in the time of therefore can reducing the fixing seal member with respect to containment member.
The developing apparatus of the 10th aspect is in the 1st～the 9th any one, the majority stacked formation of sealant that material is different mutually, be separately positioned on the length direction both ends of developer carrier, assembled and be used for preventing the side seal member of developer from the length direction both ends seepage of developer carrier.Because the side seal member can prevent the length direction both ends seepage of developer from developer carrier.Again,, the moving opposing of Zhe of developer carrier and containment member can be alleviated, the length direction both ends seepage of developer can be effectively prevented simultaneously from developer carrier if when the sealant that developer carrier Zhe wipes, constitute by felt.
The developing apparatus of the 11st aspect has following structure: have the framework that rimiform peristome reaches the resettlement section of accommodating developer that is communicated with peristome; Be arranged on the framework, for the communication direction with peristome and resettlement section intersects vertically along the wall portion that the length direction of peristome prolongs; Along the configuration of the length direction of peristome, can be rotated to support on the developer carrier of offside that is positioned at the resettlement section of communication direction with respect to wall portion; Between wall portion and developer carrier, be provided with, dispose, push and the bed thickness of the developer that carried is limited the scraper of usefulness as the 2nd distolateral surface of the other end on the surface of described developer carrier described developer carrier as the 1st end side of an end is relative with wall portion along wall portion; Be configured in the opposite face of scraper wall portion, the support portion of support scraper; An opposite face part and supporting member coincide configuration, be used for the containment member in gap between sealed wall portion and the scraper; Be coated on by supporting member length direction both ends and the formed layer of scraper opposite face portion, be used for sealing elasticity solid by described layer portion and the formed gap of containment member.Containment member and supporting member are configured to not overlap, and generate the gap between the opposite face of scraper, because described gap is by the embedding of elasticity solid institute, so the gap between seal blades and the framework wall portion reliably.And 1 of the number of containment member is just much of that, can be accurately and dispose scraper wall portion and above-mentioned opposite face simply.
The developing apparatus of the 12nd aspect be aspect the 11st in, the elasticity solid is coated on layer portion after, then containment member under leather hard.Because in leather hard, promptly the adhesion of elasticity solid has the stage that to a certain degree descends to follow containment member, when the recycle developing apparatus, containment member can break away from from the elasticity solid easily, therefore can improve recycle.
The developing apparatus of the 13rd aspect has following structure: have the framework that rimiform peristome reaches the resettlement section of accommodating developer that is communicated with peristome; Be arranged on along peristome length direction one end, extend and along the 1st wall portion that the communication direction of peristome and resettlement section is extended simultaneously along described length direction; Peristome along the length direction setting of peristome, can be rotated to support on the framework and the developer carrier of bearing developer; One end is relative with the 1st wall portion to be disposed, extend, other end pushing developer carrier, be used for limiting the layer thickness regulating member that is developed the developer bed thickness that the agent supporting body carried to the surface of developer carrier from an end; Be clamped between the 1st wall portion and the layer thickness regulating member, be used for sealing the 1st containment member in gap between the 1st wall portion and the layer thickness regulating member.
Be clamped in the 1st wall portion that is arranged at framework and the 1st containment member between the layer thickness regulating member owing to had, so can prevent that developer is from seepage between framework and the layer thickness regulating member.Layer thickness regulating member between the 1st wall portion and developer carrier, extends to developer carrier from an end of the 1st wall portion side, and described the 1st wall portion is that length direction one end along the framework peristome is provided with, and described developer carrier is configured in the framework peristome.That is, layer thickness regulating member is arranged between the 1st wall portion and the developer carrier, extends to the relative direction of described the 1st wall portion and developer carrier.The 1st containment member is clamped between the end and the 1st wall portion of layer thickness regulating member of such configuration, therefore, relative direction at described the 1st wall portion and developer carrier, in order to reduce the size of developing apparatus, even reduce the size (size of short transverse) of layer thickness regulating member, also can need not to reduce the size of the 1st containment member.As a result, just can guarantee not only can prevent the sealing effect that plays by the 1st containment member developer from framework and layer thickness regulating member seepage, and can realize the miniaturization of developing apparatus.
The developing apparatus of the 14th aspect is, in aspect the 13rd, the 1st wall portion, relative with the layer thickness regulating member direction, be provided with the 1st opposite face that has certain width in the direction that intersects vertically with described relative direction, layer thickness regulating member is relative with the 1st wall portion direction, be provided with the 2nd opposite face that has certain width in the direction that intersects vertically with described relative direction, the 1st containment member is clamped between the 1st opposite face and the 2nd opposite face.Because the 1st containment member is clamped between the 1st opposite face and the 2nd opposite face, wherein, described the 1st opposite face and the 2nd opposite face have certain thickness on the direction that the relative direction with the 1st wall portion and layer thickness regulating member intersects vertically, therefore, can improve the width of the 1st containment member greatly.As a result, can improve the sealing that the 1st containment member is brought into play, can prevent more effectively that developer is from seepage between framework and the layer thickness regulating member.
The developing apparatus of the 15th aspect is, in aspect the 14th, layer thickness regulating member be formed to the length direction of peristome extend lamellar, dispose along the scraper of pushing developer carrier and the one side of scraper, in the 1st wall portion side, the 1st supporting member of scraper is supported in configuration, the 1st supporting member have the contact site of contact scraper with from the end relative with the 1st wall portion of contact site in the portion that extends that communication direction is extended, be formed with the 2nd opposite face in the portion of extending.Rely on contact site and extend portion, can give the 1st supporting member very high rigidity.Therefore, contact with scraper,, can prevent the bending of scraper distortion or deflection etc. by by first supporting member supporting scraper by making first supporting member.Its result can make the developer carrier carrying have the thin layer of the developer of uniform thickness by the strength pushing developer carrier of scraper with homogeneous.In addition, owing in the portion of extending, be formed with the 2nd opposite face, need not additionally to be arranged on the member that is used for clamping first containment member between first opposite face of first wall portion, can seek the reduction of parts number of packages.
The developing apparatus of the 16th aspect, in any one aspect the 13rd～the 15th, the 1st wall portion and framework form as one.Can cut down the parts number of packages, make to simplify the structure.
The developing apparatus of the 17th aspect in any one aspect the 13rd～the 16th, just intersects with communication direction, and has: is arranged in the framework, extends with the length direction along peristome, be clamped in the 2nd wall portion of relative configuration with layer thickness regulating member; With the 2nd containment member, the 2nd containment member is clamped between the 2nd wall portion and the layer thickness regulating member, is used for sealing between the 2nd wall portion and the layer thickness regulating member.Even if between the 2nd wall portion and layer thickness regulating member that are arranged on the framework, can prevent the seepage of developer by the 2nd containment member.Therefore, can prevent reliably further that developer is from seepage between the 2nd wall portion and the layer thickness regulating member.
The developing apparatus of the 18th aspect, aspect the 17th in, the 1st containment member and the 2nd containment member form as one.Can cut down the parts number of packages, can alleviate and be used to assemble the 1st containment member and the 2nd containment member operation quantity.
The developing apparatus of the 19th aspect, in aspect the 17th or the 18th, layer thickness regulating member contacts with the face opposite sides of the 1st supporting member that is provided with scraper on the one hand, contact with the 2nd wall portion with other faces of one side opposition side, and have with the 1st wall portion across at interval and the 2nd supporting member of configuration, the 2nd containment member between the 1st wall portion and the 2nd wall portion in, be clamped between the 2nd wall portion and the 1st supporting member.Dependence is configured in and is provided with the 2nd supporting member of face opposition side of the 1st supporting member of scraper, can more strengthen scraper, can prevent the bending of scraper more reliably.Therefore, can be by the more strength pushing developer carrier of homogeneous of scraper.Its result can make the developer carrier carrying have the more thin layer of the developer of uniform thickness.In addition, because other faces of the 2nd supporting member contact with the 2nd wall portion, the 2nd containment member is configured between the 1st wall portion and the 2nd supporting member, so the 2nd containment member can not press from both sides into the 2nd supporting member and the 2nd wall portion, can prevent to produce the slit between the 2nd supporting member and the 2nd wall portion, can guarantee reliable sealing.
The developing apparatus of the 20th aspect, in any one aspect the 17th～the 19th, the 2nd wall portion and framework form as one.Can cut down the parts number of packages, make to simplify the structure.
The handle box of the 21st aspect is can be to the handle box of imaging device mounting or dismounting, the arbitrary developing apparatus with the 1st～the 12nd aspect.Owing to have the developing apparatus in the time of being spent that can alleviate the configuration that is used for containment member, so can alleviate the manufacturing of handle box required time.
The handle box of the 22nd aspect, be can to imaging device mounting or dismounting handle box, the arbitrary developing apparatus with the 13rd～the 20th aspect.Even if be in the layer thickness regulating member just crisscross with the length direction of developer carrier owing to have to shorten, can prevent reliably that also developer is from seepage between framework and the layer back limiting member, so can seek the miniaturization of developing apparatus, corresponding to the miniaturization of its developing apparatus, can seek the miniaturization of handle box.
The handle box of the 23rd aspect has the arbitrary handle box of the 1st～the 21st aspect or the handle box of the 21st aspect.Owing to have the developing apparatus or the handle box in the time that the gently configuration of containment member spends, so can alleviate the required time of the manufacturing of imaging device.
The handle box of the 24th aspect has the arbitrary developing apparatus of the 13rd～the 20th aspect or the handle box of the 22nd aspect.Even if owing to have the layer thickness regulating member that shortens the direction that the length direction with developer carrier just intersecting, also can prevent developing apparatus or the handle box of developer reliably from seepage between framework and the layer thickness regulating member, so can seek the miniaturization of handle box, corresponding to the miniaturization of its handle box, can seek the miniaturization of imaging device.
The assembly method of the developing apparatus of the 25th aspect has: be communicated with, have the incorporating section of taking in developer with the peristome and the peristome of groove shape; In peristome, along the length direction configuration of peristome, be rotatable by the framework supporting, the developer carrier of bearing developer; The pushing developer carrier, be used to limit the layer thickness regulating member of the bed thickness of the developer that is developed the carrying of agent supporting body, developing apparatus is arranged on along on the end of the length direction of peristome, extends along its length, and has: along the 1st wall portion that the communication direction of peristome and incorporating section is extended; Be clamped between the 1st wall portion and the layer thickness regulating member, be used for the 1st containment member that seals between the 1st wall portion and the layer thickness regulating member; Be arranged on the framework, so that extend the 2nd wall portion of relative configuration with layer thickness regulating member along the length direction of peristome; The 2nd containment member, the 2nd containment member, be clamped in and the 2nd wall portion and layer thickness regulating member between, be used for and will seal between the 2nd wall portion and the layer thickness regulating member.Layer thickness regulating member forms lamellar along what extend on the length direction of peristome, have: the configuration of relative the 1st wall portion of an end, the scraper of other end pushing developer carriers, one side configuration along scraper, the 1st supporting member at the 1st wall portion side bearing scraper, contact with the face of the face opposition side of the 1st supporting member that is provided with scraper, contact with the 2nd wall portion with other faces of another side opposition side, and with 2nd supporting member of the 1st wall portion across arranged spaced, the 1st containment member and the 2nd containment member are contacted separately and after disposing with the 1st wall portion and the 2nd wall portion, with the 1st supporting member with the 1st containment member by in the 1st wall portion; And with the 1st supporting member with the 2nd containment member by in the direction of the 2nd wall portion, layer thickness regulating member is assembled on the framework.
According to such method, because layer thickness regulating member is assembled on the framework, the 1st containment member is pressed in the 1st wall portion with the 1st supporting member, and the 1st supporting member is pressed the 2nd containment member in the 2nd wall portion, so that other faces of the 2nd supporting member contact with the 2nd wall portion, and can between its 2nd supporting member and the 1st wall portion, dispose the 2nd containment member.Therefore, can prevent that the 2nd containment member from sandwiching between the 2nd supporting member and the 1st wall portion.
Description of drawings
Fig. 1 is the major part sectional view of expression as an embodiment of the laser printer of imaging device of the present invention;
Fig. 2 is the sectional view of Delevoping cartridge shown in Figure 1;
Fig. 3 is the rear view of the framework of Delevoping cartridge shown in Figure 2;
Fig. 4 is the rear view of doctor assemblies shown in Figure 2;
Fig. 5 is the front view of doctor assemblies shown in Figure 2;
Fig. 6 is the vertical view of doctor assemblies shown in Figure 2;
Fig. 7 is the side view of doctor assemblies shown in Figure 2;
Fig. 8 is illustrated near Delevoping cartridge (the 1st embodiment: the sectional view of the structure the doctor assemblies the 1st example);
Fig. 9 is the rear view of the structure of interior sealing of expression scraper shown in Figure 8 and doctor assemblies;
Figure 10 is the rear view of the paste position of interior sealing of expression apparent scraper shown in Figure 8 and side seal;
Figure 11 is at Delevoping cartridge (the 1st embodiment: the front view of doctor assemblies the 2nd example);
Figure 12 is expression Delevoping cartridge (the 1st embodiment: sectional view the 2nd example);
Figure 13 is the center side cut-open view of framework shown in Figure 12;
Figure 14 is illustrated in Delevoping cartridge (the 1st embodiment: the front view of the doctor assemblies the 3rd example);
Figure 15 is the cut-open view with the occasion of cutting off line A-A cut-out doctor assemblies shown in Figure 14;
Figure 16 is the front view that is illustrated in coating elastic adhesive on the length direction both ends of stiffening plate shown in Figure 14;
Figure 17 is near expression Delevoping cartridge (the 2nd embodiment: the sectional view of the structure the doctor assemblies the 1st example);
Figure 18 is expression Delevoping cartridge (the 2nd embodiment: the vertical view of the paste position of the top seal the 1st example);
Figure 19 is Delevoping cartridge (the 2nd embodiment: the major part sectional view the 2nd example);
Figure 20 is expression Delevoping cartridge (the 2nd embodiment: the cut-open view of pasting the state of top seal the 2nd example);
Figure 21 be expression with top seal stick on Delevoping cartridge (the 2nd embodiment: on the framework the 2nd example) the stereographic map of state; With
Figure 22 A and 22B are used to illustrate that doctor assemblies is to Delevoping cartridge (the 2nd embodiment: the sectional view of the assemble method of framework the 2nd example).
Embodiment
Below, the accompanying drawing according to its embodiment of expression describes in detail with regard to the present invention.
Fig. 1 is the major part sectional view of expression as an example of the laser printer of imaging device of the present invention.In Fig. 1, laser printer 1 in body housing 2, has feeding portion 4 that supplies with printer paper 3 usefulness and the image forming part 5 that the formation image is used on the printer paper of supplying with 3 etc.
On a side sidewall of body housing 2, be formed with mounting or dismounting mouth 6, and be provided with the front shroud 7 that is used to open and close this mounting or dismounting mouth 6 handle box 18 mounting or dismounting usefulness described later.This front shroud 7 rotates to be supported in freely to insert and leads on the cover axle (not shown) of its bottom.Thus, when with cover axle being center when front shroud 7 is closed, utilize front shroud 7 will install and remove mouthful 6 lockings, when opening for the front shroud 7 of naming a person for a particular job with the cover axle (when toppling over), mounting or dismounting mouthfuls 6, can be installed and removed handle box 18 relative body housings 2 from this mounting or dismounting mouth 6 by open.On front shroud 7, burying guidance panel (not shown) underground with operating key and LED display part again.
Feeding portion 4 has on the bottom in body housing 2: dismantledly the air roll 12 of Zu Zhuan sheet feed stacker 8, the paper feed roller 9 of top of leading section that is arranged on sheet feed stacker 8 and paper supply pad 10, the paper pick-up roller 11 that is arranged on the rear side of paper feed roller 9, relative configuration below the front side of paper feed roller 9, be arranged on the calibration (Japanese: roller 13 レ ジ ス ト) of the back side top of paper feed roller 9.
In the inside of sheet feed stacker 8, has the printer paper pressing plate 14 that printer paper 3 mountings can be become layered laminate.This printer paper pressing plate 14 is supported swingably by rearward end, and leading section direction up and down moves.At the leading section of sheet feed stacker 8, be provided with the lever 15 that the leading section of printer paper pressing plate 14 is lifted upward usefulness again.This lever 15 forms roughly L font of section from the front side of printer paper pressing plate 14 to downside with entering, and its upper end is assembled on the set lever shaft 16 of the leading section of sheet feed stacker 8, and end thereafter with the leading section butt of the downside of printer paper pressing plate 14.Thus, if among the figure around clockwise rotary driving force when being input into lever shaft 16, then lever 15 is that fulcrum is rotated with lever shaft 16, the rearward end of lever 15 is lifted the leading section of printer paper pressing plate 14.
If when lifting the leading section of printer paper pressing plate 14, be positioned at the printer paper 3 of the upper on the printer paper pressing plate 14, pushed by paper pick-up roller 11, by the rotation of this paper pick-up roller 11, beginning conveyance between paper feed roller 9 and paper supply pad 10.On the other hand, if sheet feed stacker 8 is broken away from from body housing 2, then the printer paper pressing plate 14, utilize its deadweight, and leading section moves downwards, becomes along the state of the bottom surface of sheet feed stacker 8.Under this state, can with printer paper 3 layered laminate be positioned on the printer paper pressing plate 14.
The printer paper 3 that utilizes paper pick-up roller 11 to send between paper feed roller 9 and paper supply pad 10 by the rotation of paper feed roller 9, when being held, can carry out paper supply with per 1 paper reliably dividually between paper feed roller 9 and paper supply pad 10.Printer paper 3 behind the paper supply is between paper feed roller 9 and air roll 12, to aligning roller 13 conveyances.Aligning roller 13, constitute by mutual relative pair of rolls, after the calibration printer paper 3 is being carried out conveyance to the print position (clamped position between photosensitive drums 28 described later and the transfer roll 30 is with the position of the painted picture on the photosensitive drums 28 to printer paper 3 printings) of image forming part 5.
Grid-control formula corona charging device 29, at the rear side oblique upper of photosensitive drums 28, with photosensitive drums 28 discontiguous states, leave that the compartment of terrain is relative to dispose.This grid-control formula corona charging device 29 is the charged grid-control formula corona charging devices used with the positively charged of tinsel generation corona discharge from tungsten etc., and positive polarity is arranged to equally to have in the surface of photosensitive drums 28.
Scraper assembled component 46, the side section is the L font.Specifically, scraper assembled component 46 has: 43 relative with lower wall, extend at Width, at fore-and-aft direction assembled portion 47 on width tabular arranged; On this leading section of assembled portion 47 crooked downwards, extend at Width, width arranged, be formed with and backsight, be the preceding assembled portion 48 of clathrate recess at above-below direction.This scraper assembled component 46 was fixed on the upper wall 42 after both can having formed with upper wall 42 splits ground, also can form with upper wall 42.Scraper assembled component 46 if form with upper wall 42, just can reduce the part number of this laser printer 1, can make to simplify the structure.
On preceding assembled portion 48, cut out semicircular breach by following ora terminalis from the length direction both ends, form the recess of avoiding with assembling screw 94 collision usefulness described later 82.Again, on preceding assembled portion 48, with each recess 82 relatively on the spaced position of length direction lateral septal, doctor assemblies 40 is assembled in scraper assembled component 46 (preceding assembled portion 48) when going up, formation will assemble the screw 83 of screw 100 screw-in usefulness.
The leading section of lower wall 43, extend and to be connected with antetheca 79 continuums of states skew back top forward.On the rear side of lower wall 43, be formed with axially extended plastic tab configuration portion 121 along developer roll 39 again.In this plastic tab configuration portion 121, dispose poly terephthalic acid second two fat as material, axially carry out the following plastic tab 122 of swiping along it the samely with the side face of the roller 56 of developer roll 39.Following plastic tab 122 above lower wall 43, by axially carry out swiping with the side face of the roller 56 of developer roll 39 along it the samely, can prevent from seepage ink powder between lower wall 43 and the developer roll 39.Also have, on antetheca 79,, be provided with the handle part 49 that is used to control when box 25 is installed and removed in that Delevoping cartridge 26 is roused relatively downwards by from forwards extending with the coupling part of upper wall 42, also turning back.
In ink powder reception room 37, contain ink powder as non magnetic 1 composition of the positively charged of developer.As this ink powder, can use styrene monomer with polymerizable monomer, for example styrene etc.; Or acrylic acid, alkane (acrylate of C1～C4), alkane (C1～C4) partially the propylene class monomer of acrylate etc. the known polymerization that utilizes suspension polymerization etc. by polymeric toner that copolymerization obtained.Such polymeric toner is made glomeration, and flowability is extremely good, can reach the formation images with high image quality.In addition, in such ink powder, be combined with the colorant of carbon black etc. and paraffin etc., again,, add the adjuvant of silicon dioxide etc. in order to improve flowability.Its particle diameter is about 6～10 μ m degree.
In ink powder reception room 37, be provided with the stirrer 50 that the ink powder in this ink powder reception room is stirred usefulness again.Stirrer 50, central part at ink powder reception room 37, be supported on the turning axle 51 that extends vertically, by be fulcrum, stirrer 50 is rotated that the ink powder in the ink powder reception room 37 is stirred and is sidelong out backward from the connected entrance 52 between demarcation strip 45 and the lower wall 43 with this turning axle 51.
Bending prevents member 58, and the side section makes the L font, to the length direction of leaf spring member 57 extend and with relative configuration the in upper end on the surface of leaf spring member 57.This bending prevents member 58, has integratedly: the tabular contact site 61 of rectangle that contacts with the surface of leaf spring member 57; In the portion that extends 62 that ora terminalis 101 under the state that doctor assemblies 40 is assembled in scraper assembled component 46, on as the 1st end of contact site 61 rearward extends; 2 handle parts 63 that extend downwards from the rearward end of the portion of extending 62.Thus, bending prevents that member 58 has high rigidity, and supporting leaf spring member 57 prevents the bending of leaf spring member 57 deflections and fluctuating etc.
Extend portion 62, have: extend portion 64 with the end that the 1st width extends from the length direction both ends of the last ora terminalis of contact site 61; Be arranged on that these two ends extend between the portion 64 and extend portion 65 with the central authorities that the 2nd width bigger than the 1st width extends from the length direction central portion of the last ora terminalis of contact site 61.In other words, extend portion 62, rearward extending from the whole zone of length direction of the last ora terminalis of contact site 61 and have notch part 66 at these length direction both ends.2 handle parts 63, respectively from central authorities extend the length direction both ends of portion 65, central authorities extend portion 65 and down extend to oblique rear relatively, form rectangle in backsight.
Stiffening plate 59 is made of the sheet metal of elongated rectangular, extends along the back side of the length direction of leaf spring member 57, is clipping leaf spring member 57, is preventing on the relative position of the contact site 61 of member 58 with bending, is disposing contiguously with the back side of leaf spring member 57.Again, stiffening plate 59 forms the narrow a little width of width (width of above-below direction) that prevents the contact site 61 of member 58 than bending.Like this, this stiffening plate 59, and bending prevent between the member 58 upper end of leaf spring member 57 to be supported with clamp position, further strengthen this leaf spring member 57.
Assembling screw 94, the screw rod 86 that has head of screw 85 integratedly and extend from this head of screw 85.This assembles screw 94, utilizing crooked preventing under member 58 and the state of stiffening plate 59 with the upper end clamping of leaf spring member 57, screw rod 86 is prevented member 58 sides, prevents that to bending formed inserting hole (not shown) is inserted logical on the length direction both ends of member 58 and leaf spring member 57 from bending, by carrying out spiral shell dress to formed threaded hole 80 on the both ends of stiffening plate 59, leaf spring member 57 and bending with its clamping are prevented that member 58 and stiffening plate 59 from interfixing.In addition, because prevent that in bending the length direction both ends of the portion that extends 62 of member 58 are formed with notch part 66, so logical even prevent that from bending member 58 sides from also can easily make assembling screw 94 insert.
In addition, the doctor assemblies 40 with assembling like this makes the lower surface of contact site 61 and the lower surface of stiffening plate 59 be positioned at jointly on the same plane at above-below direction.Packing washer 84 is made of elastomeric material, and it is tabular to form the annulus of the screw rod 86 that can insert logical assembling screw 94.In the assembling that utilizes above-mentioned assembling screw 94, the screw rod 86 that will assemble screw 94 in sealing packing ring 84, insert logical after, prevent in member 58, leaf spring member 57 and the stiffening plate 59 by this screw rod 86 is inserted to lead in bending, packing washer 84 can be installed in the head of screw 85 and crooked the preventing between the contact site 61 of member 58 of assembling screw 94.
In addition, a side assembly hole 81 forms the circular hole corresponding with the external diameter of the screw rod of assembling screw, and the opposing party's assembly hole 81 forms slotted hole long slightly on the length direction of contact site 61, leaf spring member 57 and stiffening plate 59.Form slotted hole by assembly hole 81, can on formation position, have tolerance, can easily doctor assemblies 40 be assembled on the scraper assembled component 46 for the assembly hole on the length direction 81 with a side.Again, at doctor assemblies 40 in the assembling of scraper assembled component 46, because before the leading section of the screw rod 86 of the outstanding assembling screw 94 of stiffening plate 59 enters the recess 82 of assembled portion 48, so can avoid the leading section of this screw rod 86 and conflicting of preceding assembled portion 48.Therefore, stiffening plate 59 is seamlessly contacted with preceding assembled portion 48.
Under doctor assemblies 40 was assembled into state on the scraper assembled component 46, bending prevents member 58, and was relative with the roller 56 of developer roll 39 from the front side, and the elastic force city pushing member 60 by leaf spring member 57 contacts with roller 56 pressure.
And, the ink powder that utilizes the rotation of stirrer 50 to emit to the inner space of the rear side of framework 36 from connected entrance 52 by the rotation of donor rollers 38, is supplied with on the roller 56 of developer roll 39, at this moment, between the roller 56 of the roller 54 of donor rollers 38 and developer roll 39, have positive triboelectricity.The ink powder of on the roller 56 of developer roll 39, supplying with, rotation along with developer roll 39, enter between the roller 56 of the pushing member 60 of doctor assemblies 40 and developer roll 39, here, frictional electrification more fully also becomes certain thickness thin layer and is carried on the roller 56 of developer roll 39.
In addition, in this Delevoping cartridge 26, the interval D 1 of the vertical between the uppermost position in fig-ure of the following ora terminalis of leaf spring member 57 and the roller 54 of donor rollers 38, below 2mm, owing to have such interval D 1, so between the roller 56 of the roller 54 of donor rollers 38 and developer roll 39, charged ink powder promptly can be carried to the position of pushing member 60, can be need not the highly charged of ink powder.Again, the interval D 2 of the vertical between the uppermost position in fig-ure of the roller 54 of the following ora terminalis of stiffening plate 59 and donor rollers 38 more than 15mm, owing to have such interval D 2, can successfully be supplied with ink powder reception room 37 interior ink powders to developer roll 39 sides.
On the other hand, the surface of photosensitive drums 28, as shown in Figure 1, after utilizing grid-control formula corona charging device 29 the same ground positively chargeds, exposure is carried out in the high-velocity scanning that is used to the laser beam of self-scanning portion 17, forms the electrostatic latent image according to view data.Then, utilize developer roll 39 rotation, be carried on the developer roll 39 and the ink powder that becomes positively charged, when relatively contacting with photosensitive drums 28, supply with to formed electrostatic latent image on the surface of photosensitive drums 28, that is, and in the surface of the photosensitive drums 28 of the same ground positively charged, exposure after current potential descends is partly supplied with, but videoization thus, utilizes flop phenomenon to form the ink powder picture by carrying selectively.
Then, photosensitive drums 28 and transfer roll 30, with printer paper 3 clamping conveyances between them and be rotated driving, by printer paper is carried out conveyance between photosensitive drums 28 and transfer roll 30, the lip-deep ink powder that can will be carried on photosensitive drums 28 as transfer printing on printer paper 3.In addition, after transfer printing,,, when the brush of the surface of this photosensitive drums 28 and cleaning brush 31 is relative, removed by this brush along with the rotation of photosensitive drums 28 because of contact lip-deep paper powder with printer paper 3 attached to photosensitive drums 28.
Photographic fixing portion 19 is arranged on the rear side of handle box 18, has: photographic fixing framework 67, the warm-up mill 68 in this photographic fixing framework 67 and pushing roller 69.Warm-up mill 68 has the metal blank pipe and to the Halogen lamp LED of heating usefulness in this metal pipe, and is used to be driven in rotation from the input of the power of motor (not shown).Pushing roller 69 below warm-up mill 68, is configured to the state with warm-up mill 68 pushings relatively.This pushes roller 69, constitutes by using the roller that is made of elastomeric material that metal roll shaft is coated, and is driven along with the rotation driving of warm-up mill 68.
In photographic fixing portion 19, will during between warm-up mill 68 and the pushing roller 69, carry out hot photographic fixing at the ink powder of institute's transfer printing on the printer paper 3 to printer paper 3.Printer paper 3 behind the fixing toner is to the upper side of body housing 2 and row's paper passage 70 conveyances of direction extension up and down.Printer paper 3 to 70 conveyances of row's paper passage utilizes the exit roller 71 that is located at its upper end, to arrange paper on the formed row's paper disc 72 of the upper side of body housing 2.
In this Delevoping cartridge 26, as shown in Figure 8, the leaf spring member 57 of doctor assemblies 40 and crooked prevent member 58, with the preceding assembled portion 48 of scraper assembled component 46 between, clamping has leaf spring member 57 and crookedly prevents member 58 and as the doctor back face seal 87 as containment member that seals usefulness between the preceding assembled portion 48 of wall portion.
Doctor back face seal 87 is made up of the sponge material of ameripol etc., as shown in Figure 9, at the plate spring component 57 and the crooked back side that prevents the contact site 61 of parts 58, do not dispose stiffening plate 59 overlappingly, be equipped with 2 sidepieces 88 extending along the vertical direction at the length direction both ends of plate spring component 57 integratedly and at the length direction central portion broad ways linking part 89 that extend, that link these sidepieces 88 of plate spring component 57 as supporting member.Get on very well more specifically, at the plate spring component 57 and the crooked back side that prevents the contact site 61 of parts 58, around stiffening plate 59, be provided with configuration place 103 of configuration doctor back face seal 87 usefulness, doctor back face seal 87 is configured at the upside place of stiffening plate 59 prevent that with bending the back side of the contact site 61 of parts 57 from contacting with linking part 89 in its configuration place 103, sidepiece 88 contact with the back side of plate spring component 57 respectively at place, the length direction both sides of stiffening plate 59.
Also have, in the state before doctor assemblies 40 is assembled on the scraper assembling parts 46, doctor back face seal 87 has the bigger thickness of thickness than the fore-and-aft direction of stiffening plate 59 (direction vertical with the back side of plate spring component 57).And, the length direction central portion of 88 bottom and linking part 89 in both sides, with poly terephthalic acid second two fat is that the two sides band 90 of base material is configured in configuration place 103, this doctor back face seal 87 sticks on the plate spring component 57 and the crooked back side that prevents parts 58 by partly pasting with respect to its two sides band 90.
At the state that doctor assemblies 40 assembly of doctor assembling parts 4 are over, doctor back face seal 87 contacts with the regional A shown in Figure 10 shade at framework 36 side places.Being sidepiece 88 contacts with the top of the rear end face of the length direction both ends of preceding assembled portion 48 and two side 44, and linking part 89 contacts with the upper end of preceding assembled portion 48.And sidepiece 88 is between preceding assembling parts 48 and plate spring component 57, and the relative direction inboard before being compressed between assembling parts 48 and the plate spring component 57 is respectively flexibly preceding assembling parts 48 and plate spring component 57 pushings.
Also have, linking part 89 prevents between the parts 58 at preceding assembling parts 48 and bending, and assembling parts 48 and the crooked relative direction inboard that prevents between the parts 58 before being compressed to are respectively flexibly preceding assembling parts 48 and plate spring component 57 pushings.Thus, by each sidepiece 88 of doctor back face seal 87, can be reliably the clearance seal of preceding assembling parts 48 and plate spring component 57.Also have,, can prevent that the gap between the parts 58 from sealing in whole length direction universe to preceding assembling parts 48 and bending reliably by the linking part 89 of doctor back face seal 87.Therefore, can stop the ink powder of invading to cross the upper end of plate spring component 57 from the back side and be rolled into bending and prevent on the parts 58, can prevent reliably from leakage between the last assembled portion 47 of scraper assembling parts 46 and the doctor assemblies 40 to the back side of plate spring component 57.
And, the stiffening plate 59 as supporting member is not disposed in doctor back face seal 87 overlappingly, because between the back side of plate spring component 57 and the crooked contact site 61 that prevents parts 58, do not produce the gap, can be reliably the clearance seal between preceding assembling parts 48 and the doctor assemblies 40.Also have, assembling parts 48 and plate spring component 57 and bending prevented between the parts 58 before doctor back face seal 87 was clamped in compressive state.Can bring into play higher sealing.Can prevent the leakage of ink powder between the past assembling parts 48 and the doctor assemblies 40 more reliably.
And also have, head of screw 85 and crooked preventing between the contact site 61 of parts 58 as the assembling screw 94 of fixed part, be situated between packing washer 84 is housed, thereby by sealing packing ring 84, head of screw 85 that can seal group cartridge screw 94 and bending prevent gap between the contact site 61 of parts 58.Therefore, can prevent to invade ink powder between thread spindle 86 and the screw thread slotted eye 80, therefore can prevent the leakage of ink powder more reliably from revealing between head of screw 85 and the contact site 61.And because of sidepiece 88 and linking part 89 forms one, doctor back face seal 87 can high precision and is configured in plate spring component 57 simply and the crooked back side that prevents parts 58.Therefore, can alleviate with doctor back face seal 87 relevant work and the time of configuration.And, be provided with configuration place 103 of configuration doctor back face seal 87 usefulness in the plate spring component 57 and the crooked back side of parts 58 that prevents, thereby can, more simply doctor back face seal 87 and not configuration overlappingly of stiffening plate 59.Therefore, can further alleviate with doctor back face seal 87 relevant work and the time of configuration.
Also have, the two sides band 90 that doctor back face seal 87 is fixed to plate spring component 57 usefulness partly sticks in the doctor back face seal 87, thereby can alleviate doctor back face seal 87 is fixed to plate spring component 57 and crooked work and time when preventing parts 58.And, two sides band 90 is a base material with poly terephthalic acid second two fat, very sticking, therefore the one side of two sides band 90 is sticked in the doctor back face seal 87, afterwards, the another side of two sides band 90 is pasted plate spring component 57 and bending when preventing on the parts 58,, also can prevent the distortion (extension) of doctor back face seal 87 even add the power that religion is big for doctor back face seal 87.Therefore, can high precision doctor back face seal 87 be sticked on plate spring component 57 and crookedly prevents configuration place 103 that parts 58 are provided with.
Also have, in this laser printer, have can alleviate with doctor back face seal 87 relevant work of configuration and time, can prevent the Delevoping cartridge 26 of the leakage of ink powder simultaneously reliably, therefore can alleviate work and the time relevant with the manufacturing of handle box 18, and, can alleviate work and the time relevant with the manufacturing of laser printer.Also have, in this Delevoping cartridge 26, as shown in figure 10, the length direction both ends of the peristome 41 of framework 36 are in the bottom (shown in the shade zone) of the rear end face of each sidewall 44, dispose the side seal 91 as the side seal member that prevents from the leakage usefulness of the ink powder at the direction of principal axis both ends of developer roll 39.
As shown in Figure 8, the side seal 91 direction of principal axis two ends that are designed to again the roller 56 of developer roll 39 are in the surperficial sliding friction of its roller 56.This side seal 91 comprises sponge containment member 92 and the felt containment member 93 of lamination on this sponge member.
Like this, by being provided with side seal 91, can prevent from the seepage of the ink powder at the direction of principal axis both ends of developer roll 39.And, form by felt with the sliding friction surface of roller 56 sliding frictions of the developer roll 39 of side seal 91, thereby can reduce the roller 56 of developer roll 39 and the sliding resistance of side seal 91, the while can prevent reliably from the seepage of the ink powder at the direction of principal axis both ends of developer roll 39.
And, in this embodiment, by two sides band 90 sealing 87 in the scraper is pasted plate spring component 57, doctor assemblies 40 with sealing 87 in this scraper has been assembled on the scraper assembling parts 46, two sides band 90 is pasted the preceding assembled portion 48 of scraper assembling parts 46,, also can be assembled into doctor assemblies 40 on the scraper assembling parts 46 after sealing 87 is partly pasted in the scraper with respect to this two sides band 90.The 1st embodiment: the 2nd example
Figure 11 is other the front view (FV) of example that shows doctor assemblies 40.And, with the corresponding part of described each, in the additional same reference marks of Figure 11, in its explanation of following omission.
In this doctor assemblies shown in Figure 11 40, the back side in plate spring component 57, universe with respect to the bottom side of the plate spring component 57 of stiffening plate 59 is set in configuration place 105, dispose in this configuration place 105 and to seal 87 in the scraper, in particular, this configuration place 105 places are in the length direction both sides of plate spring component 57, dispose the sidepiece 88 of sealing 87 in the scraper respectively, dispose the linking part 89 of sealing 87 in the scraper along the following ora terminalis of stiffening plate 59.
As shown in figure 12, in doctor assemblies 40 has been assembled into state on the scraper assembling parts 46, stiffening plate 59 contacts with the preceding assembled portion 48 of assembling parts 46, thus, between preceding assembled portion 48 and plate spring component 57, the relative direction inboard of assembled portion 48 and plate spring component 57 before sealing 87 is compressed in the scraper, assembled portion 48 and plate spring component 57 before flexibly pushing respectively.
And, the occasion that sealing 87 in the scraper has been constituted like this, as shown in figure 13, at the length direction central portion of peristome 41, the size of the above-below direction of assembled portion 48 before must strengthening.Be in order to seal 87 linking part in the clamping scraper reliably by preceding assembled portion 48 and plate spring component 57.Thus, by each sidepiece 88 of sealing 87 in the scraper, the both ends of assembled portion 48 and the gap between the plate spring component 57 before can sealing reliably.Also have, by the linking part 89 of sealing 87 in the scraper, the both ends of assembled portion 48 and the gap between the plate spring component 57 before whole length direction universe seals reliably.Therefore,, also can stop the ink powder at the back side of invading plate spring component 57 to be rolled into the upper end of plate spring component 57 from this back side, can prevent reliably from seepage between the last assembled portion 47 of scraper assembling parts 46 and the plate spring component 57 by this routine structure.
The 1st embodiment: the 3rd example
Figure 14 is the front view (FV) that shows other examples of doctor assemblies 40.And, with the corresponding part of described each, in the additional same reference marks of Figure 14, in its explanation of following omission.
In this doctor assemblies shown in Figure 14 40, the linking part 89 of sealing 87 is configured on the stiffening plate 59 in the scraper, that is, the width of the above-below direction of linking part 89 is wideer, its part and stiffening plate 59 overlay configuration.By adopting such structure, can guarantee the intensity of linking part 89, can prevent the distortion (elongation) of the linking part 89 when sealing 87 is pasted in the scraper.
In this situation,, as shown in figure 15, producing gap 140 by stiffening plate 59 and 57 formed sections portions of plate spring component 130 because linking part 89 is configured on the stiffening plate 59.Therefore, should prevent, as shown in figure 16, in section portion 130, be coated with elastic adhesive 150 from the seepage of the ink powder in this gap 140.
In this example, as elastic adhesive 150, adopt super X (day Language: ス-パ-X, quick-acting joint cement company's manufacturings (the セ メ ダ イ Application System of society), registered trademark.)。Adopt the method for sealing 87 in the bonding plate spring component 57 of super X and stiffening plate 59 and the scraper, preferably as shown in figure 16, super X is spread upon after the length direction both ends of stiffening plate 59, place after ten minutes,, distinguish bonding at half-dried state.Thus, super X is spread upon after the length direction both ends of stiffening plate 59, after placement a few minutes (such as 2 minutes), with make doctor assemblies 40 and scraper in the bonding mutually situation of sealing 87 compare, peeling off during the utilizing again of Delevoping cartridge 26 becomes easily,, can improve its usability again.The 2nd embodiment: the 1st example
As shown in figure 17, in Delevoping cartridge 26, the downside 73 of the 1st opposite face of assembled portion 47 and prevent from as the bending of the 1st supporting member to accompany the top seal 75 of conduct the 1st containment member of using in this gap of sealing between the upper side 74 of the 2nd opposite face of the portion that extends 62 of parts 58 on as the 1st wall portion of scraper assembling parts 46.
Thus, when doctor assemblies 40 is assembled into scraper assembling parts 46, top seal 75 is compressed to assembled portion 47 and extends relative direction inboard between the portion 62, flexibly pushing is gone up assembled portion 47 and is extended portion 62 respectively, in the whole length direction universe that extends portion 62, can seal assembled portion 47 reliably and extend gap between the portion 62.Therefore, the ink powder that can prevent the upper end invading the back side of plate spring component 57 and be rolled into plate spring component 57 from this back side leaks out from last assembled portion 47 and the gap that extends between the portion 62.
Also have, in last assembled portion 47 with extend that clamping has top seal 75 between the portion 62, therefore for the size decreases of the short transverse (above-below direction) that makes Delevoping cartridge 26, even the size decreases of the short transverse of doctor assemblies 40 also can fully be guaranteed the width of the length direction of top seal 75.Therefore, can guarantee sufficient sealing, prevent from last assembled portion 47 reliably and when extending gap ink powder seepage between the portion 62, can realize the miniaturization of Delevoping cartridge 26 by top seal 75.
And, the downside 73 of last assembled portion 73 and the upper side 74 that extends portion 62 have width at fore-and-aft direction, therefore the width of fore-and-aft direction that can set top seal 75 is bigger, can realize the raising of sealing by top seal 75, can prevent from last assembled portion 47 more reliably and extend the seepage of the gap ink powder between the portion 62.
Bending prevents that parts 58 from by contact site 61 with extend and be bending between the portion 62 and connect, can give bending and preventing that parts 58 from comparing higher rigidity.Therefore, make bending prevent that the contact site 61 of parts 58 from contacting with the back side of plate spring component 57 (face of rear side), by making plate spring component 57 prevent that by bending parts 58 from supporting, can prevent the bending of the deflection of plate spring component 57 and fluctuating etc., its result, by the elastic force of plate spring component 57, can be pressed in push part 60 with trying hard to recommend of homogeneous on the roller 56 of developer roll 39, can on the surface of roller 56, carry the thin layer of ink powder with uniform thickness.Also have, the upper side 74 that extends portion 62 is held concurrently and be the clamping face of top seal 75, thus there is no need on the scraper assembling parts 46 between the assembled portion 47 clamping upper seal the miscellaneous part of 75 usefulness, the quantity that can realize cutting down part.
And, even handle box 18 makes the size decreases of the short transverse of doctor assemblies 40, also comprise the Delevoping cartridge 26 that can reliably prevent the ink powder seepage, therefore can realize miniaturization, corresponding with the miniaturization of its handle box 18, can realize the miniaturization of laser printer.
The 2nd embodiment: the 2nd example
What Figure 19 made other examples of showing Delevoping cartridge 26 wants portion's cross-sectional side view.And, with the corresponding part of described each, in the additional same reference marks of Figure 19, in its explanation of following omission.
In this Delevoping cartridge 26, the top seal 76 of clamping forms from it assembled portion 47 and extends preceding assembled portion 48 and crooked the preventing between the contact site 61 of parts 58 that is rolled between the portion 62 as the 2nd wall portion between assembled portion 47 on the scraper assembling parts 46 and the crooked portion that extends 62 that prevents parts 58.Top seal 76 is made up of sponge materials such as ameripol, as shown in figure 20, comprise the upper side 74 that is configured in the portion of extending 62 integratedly conduct the 1st containment member sealing top 77 and be configured in the sealing front portion 78 of conduct the 2nd containment member of the rear side of plate spring component 57, by two sides band etc., sealing top 77 and upper side 74, sealing anterior 78 are bonding respectively with contact site 61.
Sealing top 77, same with described top seal 75, along end extend portion 64 front-end edge, be provided with in the whole zone of the length direction of the portion of extending 62, have the last assembled portion 47 when being assembled in doctor assemblies 40 on the scraper assembled component 46 and extend the big thickness in interval between the portion 62.Sealing is anterior 78, begins to be connected with sealing top 77, extends to and as the upper surface position contacting of the stiffening plate 59 of the 2nd supporting member always.Sealing front portion 78, under the state before doctor assemblies 40 is assembled on the scraper assembled component 46, has the thick thickness of thickness of the fore-and-aft direction of leaf spring member 57 when being assembled in doctor assemblies 40 on the scraper assembled component 46 and the interval between the preceding assembled portion 48, stiffening plate 59.
Like this, doctor assemblies 40, with respect to scraper assembled component 46, be to assemble like this, utilize bending to prevent that the portion that extends 62 of member 58 from will seal top 77 and pressing against on the assembled portion 47, stiffening plate 59 and preceding assembled portion 48 relative contacts utilize bending to prevent that the contact site 61 of member 58 from will seal anterior 78 and pressing against on the preceding assembled portion 48.Thus, sealing top 77 is compressed in assembled portion 47 and the relative direction that extends portion 62, and flexibly pushing is gone up assembled portion 47 and extended portion 62 respectively.
Again, sealing top 78 is compressed in preceding assembled portion 48 and the crooked relative direction that prevents the contact site 61 of member 58, and difference is preceding assembled portion 48 of pushing and contact site 61 flexibly.Therefore, utilize sealing top 77 positively will go up assembled portion 47 and extend sealing between the portion 62, utilize sealing anterior 78 can positively preceding assembled portion 48 and bending be prevented to seal between the contact site 61 of member 58.The result is, can prevent ink powders in the framework 36 enter before assembled portion 48 prevent between the contact site 61 of member 58 with bending, can prevent positively further that ink powder is from last assembled portion 47 with extend seepage between the portion 62.
Because sealing top 77 and sealing anterior 78 are integrally formed,, can reduce the operation of its assembling so, can reduce the part number than with these occasions that forms respectively again.Again, because stiffening plate 59 contacts with preceding assembled portion 48, sealing anterior 78 is configured in the slit between the upper surface of the downside 73 of assembled portion 47 and stiffening plate 59, so, sealing anterior 78 can engaging-in stiffening plate 59 and preceding assembled portion 48 between, can prevent to produce the slit between stiffening plate 59 and the preceding assembled portion 48, can guarantee certain sealing.
In addition, in this embodiment, be that top seal 76 is bonded on the doctor assemblies 40, but, as shown in Figure 2, also can utilize double sticky tape etc. that top seal 76 is bonded at scraper assembled component 46, scraper assembled component 46 with respect to being stained with this top seal 76 carries out assembly of doctor assemblies 40.
This occasion, shown in Figure 22 A, after the 46 adhesion top seals 76 of scraper assembled component, assembling is such, with doctor assemblies 40 from the back skew back below of top seal 76, skew back top forward, utilize the crooked portion that extends 62 that prevents member 58 will seal on the last assembled portion 47 that top 77 presses against scraper assembled component 46, and utilize bending to prevent that the contact site 61 of member 58 from will seal front portion 78 and pressing against on the preceding assembled portion 48 of scraper assembled component 46.Assembling like this, shown in Figure 22 B, sealing anterior 78 can engaging-in stiffening plate 59 and preceding assembled portion 48 between, stiffening plate 59 contact really with preceding assembled portion 48, can will seal between the upper surface that front portion 78 positively be configured in the downside 73 of assembled portion 47 and stiffening plate 59.
Claims (23)
1. developing apparatus is characterized in that possessing:
Have groove shape peristome, reach the framework that is communicated with and accommodates the resettlement section of developer with described peristome;
Be arranged on the described framework, with the communication direction of described peristome and described resettlement section orthogonally, along wall portion that the length direction of described peristome extends;
Length direction configuration, described relatively wall portion opposite side of resettlement section on described communication direction along described peristome are supported for rotating developer carrier;
Be configured between described wall portion and the described developer carrier along described wall portion, one end i.e. the 1st end side and relative configuration of described wall portion, the other end i.e. the 2nd end side is pushed described developer carrier, is used to limit the scraper of the bed thickness of the developer that is carried by described developer carrier;
Be configured on the described scraper opposite face relative, support the supporting member of described scraper with described wall portion;
On described opposite face, do not dispose overlappingly with described supporting member, have integratedly: at described scraper length direction both ends respectively to the sidepiece that extends with the direction of length direction quadrature, and be connected connecting portion between the described sidepiece at the length direction central portion, be used for the containment member that seals between described wall portion and the described scraper.
2. developing apparatus as claimed in claim 1, it is characterized in that, on described opposite face, around described supporting member, be provided with the configuration headspace that is used to dispose described containment member, described containment member, described configuration headspace at described opposite face, described relatively supporting member disposes described connecting portion in described the 1st end side, and disposes described sidepiece respectively in the length direction both sides.
3. developing apparatus as claimed in claim 1, it is characterized in that, on described opposite face, described relatively supporting member, be provided with the configuration headspace that is used to dispose described containment member in described the 2nd end side, described containment member is configured in the described configuration of described opposite face with on the headspace.
4. developing apparatus as claimed in claim 1 is characterized in that, described containment member on the described scraper direction relative with described wall portion, has the thickness also bigger than the thickness of described supporting member.
5. developing apparatus as claimed in claim 1 is characterized in that having fixed component, and this fixed component runs through described scraper and described supporting member, and described scraper and described supporting member are interfixed.
6. developing apparatus as claimed in claim 5 is characterized in that, is formed with the recess that is used to prevent to protrude in described fixed component the part butt of described supporting member in the described wall portion.
7. developing apparatus as claimed in claim 5 is characterized in that, described fixed component reaches the screw rod that extends from described head of screw by head of screw and constitutes, and has the gasket seal that is clipped between described head of screw and described scraper.
8. developing apparatus as claimed in claim 1 is characterized in that, possesses with the polyethylene terephthalate double sticky tape on one of them side who is base material, described containment member is fixed on described wall portion and described scraper.
9. developing apparatus as claimed in claim 8 is characterized in that, described double sticky tape pastes partly to be paid on described containment member.
10. developing apparatus as claimed in claim 1 is characterized in that, possesses the side seal member that is constituted, is separately positioned on the length direction both ends of described developer carrier by the different a plurality of sealants of stacked, mutual material.
11. a developing apparatus is characterized in that possessing:
Have groove shape peristome, reach the framework that is communicated with and accommodates the resettlement section of developer with described peristome;
Be arranged on the described framework, with the communication direction of described peristome and described resettlement section orthogonally, along wall portion that the length direction of described peristome extends;
Length direction configuration, described relatively wall portion opposite side of resettlement section on described communication direction along described peristome are supported for rotating developer carrier;
Be configured between described wall portion and the described developer carrier along described wall portion, one end i.e. the 1st end side and relative configuration of described wall portion, the other end i.e. the 2nd end side is pushed described developer carrier, is used to limit the scraper of the bed thickness of the developer that is carried by described developer carrier;
Be configured on the described scraper opposite face relative, support the supporting member of described scraper with described wall portion;
On described opposite face, dispose overlappingly, be used for the containment member that seals between described wall portion and the described scraper with a described supporting member part;
Be coated on by the formed end difference of opposite face of the length direction both ends of described supporting member and described scraper, be used for the elastic adhesive that seals by this end difference and the formed space of described containment member.
12. developing apparatus as claimed in claim 11 is characterized in that, described elastic adhesive is after being coated on described end difference, is bonded in described containment member under half-dried state.
13. a developing apparatus is characterized in that possessing:
Framework has groove shape peristome, reaches the resettlement section that is communicated with and accommodates developer with described peristome;
The 1st wall portion is arranged on the end along described peristome length direction, and extends along described length direction, and extends along the communication direction of described peristome and described resettlement section;
Developer carrier in the length direction configuration of described peristome along described peristome, is supported on the described framework bearing developer rotationally;
Layer thickness regulating member, the one end extends to the surface of described developer carrier from a described end with the described the 1st wall portion is relative disposes, and the other end is pushed described developer carrier, and restriction is by the bed thickness of the developer that described developer carrier carried;
The 1st containment member is clamped between described the 1st wall portion and the described layer thickness regulating member, is used for sealing between described the 1st wall portion and the described layer thickness regulating member.
14. developing apparatus as claimed in claim 13, it is characterized in that, described the 1st wall portion have relative with described layer thickness regulating member and with the direction of this relative direction quadrature on have the 1st opposite face of width, described layer thickness regulating member have relative with described the 1st wall portion and with the direction of this relative direction quadrature on have the 2nd opposite face of width, described the 1st containment member is clipped between described the 1st opposite face and described the 2nd opposite face.
15. developing apparatus as claimed in claim 14, it is characterized in that, described layer thickness regulating member has: form lamellar, the scraper of pushing described developer carrier that extend at the length direction of described peristome, support the 1st supporting member of described scraper along a face configuration of described scraper, in described the 1st wall portion side, described the 1st supporting member has: the contact site that contacts with described scraper, and from the end relative of described contact site with described the 1st wall portion to the portion that extends that described communication direction is extended, described extending is formed with described the 2nd opposite face in the portion.
16. developing apparatus as claimed in claim 13 is characterized in that, described the 1st wall portion and described framework are integrally formed.
17. developing apparatus as claimed in claim 13 is characterized in that, has: the 2nd wall portion, with the described communication direction quadrature and the form of extending along the length direction of described peristome, be arranged on the described framework dispose relative with described layer thickness regulating member; The 2nd containment member is clamped between described the 2nd wall portion and the described layer thickness regulating member, is used for sealing between described the 2nd wall portion and the described layer thickness regulating member.
18. developing apparatus as claimed in claim 17 is characterized in that, described the 1st containment member and described the 2nd containment member are integrally formed.
19. developing apparatus as claimed in claim 17, it is characterized in that, described layer thickness regulating member has the 2nd supporting member, the face of described the 2nd supporting member one side is with the face contact of the opposite side of the face with being provided with described the 1st supporting member of described scraper, contact with described the 2nd wall portion with the face of the opposite side of face of a described side, and with the devices spaced apart configuration of described the 1st wall portion, described the 2nd containment member, between described the 1st wall portion and described the 2nd supporting member, be clamped between described the 2nd wall portion and described the 1st supporting member.
20. developing apparatus as claimed in claim 17 is characterized in that, described the 2nd wall portion and described framework are integrally formed.
21. a handle box can be adorned with taking off and is arranged on the imaging device, it is characterized in that possessing as each described developing apparatus in the claim 1～20.
22. an imaging device is characterized in that, possesses as each described developing apparatus or handle box as claimed in claim 21 in the claim 1～20.
23. the assemble method of a developing apparatus, described developing apparatus possesses: have groove shape peristome, reach the framework that is communicated with and accommodates the resettlement section of developer with described peristome; In of the length direction configuration of described peristome, be supported on the described framework developer carrier of bearing developer rotationally along described peristome; Push described developer carrier, be used to limit the layer thickness regulating member of the bed thickness of the developer that carries by described developer carrier, it is characterized in that,
Described developing apparatus possesses:
The 1st wall portion is arranged on the end along described peristome length direction, and extends along described length direction, and extends along the communication direction of described peristome and described resettlement section; The 1st containment member is clamped between described the 1st wall portion and the described layer thickness regulating member, is used for sealing between described the 1st wall portion and the described layer thickness regulating member; The 2nd wall portion is to be arranged on the described framework dispose relative with described layer thickness regulating member with described communication direction quadrature and the form that extends along the length direction of described peristome; The 2nd containment member is clamped between described the 2nd wall portion and the described layer thickness regulating member, is used for sealing between described the 2nd wall portion and the described layer thickness regulating member,
Described layer thickness regulating member has: form the length direction of described peristome extend lamellar, an end is with the described the 1st wall portion is relative disposes, the other end is pushed the scraper of described developer carrier; Along a face configuration of described scraper, support the 1st supporting member of described scraper in described the 1st wall portion side; The face of one side is with the contact of the face of the opposite side of the face with being provided with described the 1st supporting member of described scraper, contacts with described the 2nd wall portion with the face of the opposite side of face of a described side, and the 2nd supporting member that disposes with described the 1st wall portion devices spaced apart,
Make described the 1st containment member and described the 2nd containment member, contacting described the 1st wall portion and described the 2nd wall portion respectively and after disposing,
From with the 1st supporting member with described the 1st containment member to described the 1st wall portion press and with the 1st supporting member with the direction that described the 2nd containment member presses to described the 2nd wall portion, described layer thickness regulating member is assembled on the described framework.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004222538 | 2004-07-29 | ||
| JP2004222536 | 2004-07-29 | ||
| JP2004222536A JP2006039429A (en) | 2004-07-29 | 2004-07-29 | Development apparatus, process cartridge, and image forming apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1728010A true CN1728010A (en) | 2006-02-01 |
| CN100394323C CN100394323C (en) | 2008-06-11 |
Family
ID=35904464
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100895582A Active CN100394323C (en) | 2004-07-29 | 2005-07-28 | Developing apparatus, process cartridge and image forming apparatus and assembling method of developing apparatus |
| CN 200520112876 Expired - Fee Related CN2879247Y (en) | 2004-07-29 | 2005-07-29 | Developing device, processing box and imaging apparatus |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520112876 Expired - Fee Related CN2879247Y (en) | 2004-07-29 | 2005-07-29 | Developing device, processing box and imaging apparatus |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2006039429A (en) |
| CN (2) | CN100394323C (en) |
Cited By (8)
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| US7706715B2 (en) | 2006-03-27 | 2010-04-27 | Brother Kogyo Kabushiki Kaisha | Image forming apparatus and developer cartridge |
| CN102109794A (en) * | 2009-12-25 | 2011-06-29 | 兄弟工业株式会社 | Developing device and image forming apparatus |
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| CN103513547A (en) * | 2012-06-28 | 2014-01-15 | 株式会社理光 | Scraper blade construct, eikonogen limit member, developing unit, processing unit and image forming device |
| CN103760757A (en) * | 2014-01-04 | 2014-04-30 | 珠海赛纳打印科技股份有限公司 | Processing cartridge and image forming equipment comprising same |
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| JP4661673B2 (en) * | 2006-04-21 | 2011-03-30 | ブラザー工業株式会社 | Developing device, image carrier device, and image forming apparatus |
| JP4915142B2 (en) | 2006-05-30 | 2012-04-11 | ブラザー工業株式会社 | Developing device, process cartridge and image forming apparatus including the same |
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| US5475467A (en) * | 1993-04-19 | 1995-12-12 | Canon Kabushiki Kaisha | Sealing member, and process cartridge and image forming apparatus using same |
| JP2000075657A (en) * | 1998-08-31 | 2000-03-14 | Canon Inc | Developing device, developing cartridge, and image forming device |
| JP3825939B2 (en) * | 1998-10-22 | 2006-09-27 | 株式会社リコー | Developing device, process cartridge, and image forming apparatus |
| JP4377995B2 (en) * | 1999-08-02 | 2009-12-02 | キヤノン株式会社 | Developing device, process cartridge, and image forming apparatus |
| JP3936582B2 (en) * | 2001-12-25 | 2007-06-27 | ブラザー工業株式会社 | Developing device and image forming apparatus |
| KR100449723B1 (en) * | 2002-05-29 | 2004-09-22 | 삼성전자주식회사 | Developing apparatus having a sealing means preventing toner leakage |
-
2004
- 2004-07-29 JP JP2004222536A patent/JP2006039429A/en active Pending
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2005
- 2005-07-28 CN CNB2005100895582A patent/CN100394323C/en active Active
- 2005-07-29 CN CN 200520112876 patent/CN2879247Y/en not_active Expired - Fee Related
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Also Published As
| Publication number | Publication date |
|---|---|
| CN2879247Y (en) | 2007-03-14 |
| JP2006039429A (en) | 2006-02-09 |
| CN100394323C (en) | 2008-06-11 |
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