CN100428083C - Process cartridge and electrophotographic image forming apparatus - Google Patents
Process cartridge and electrophotographic image forming apparatus Download PDFInfo
- Publication number
- CN100428083C CN100428083C CNB2005100833800A CN200510083380A CN100428083C CN 100428083 C CN100428083 C CN 100428083C CN B2005100833800 A CNB2005100833800 A CN B2005100833800A CN 200510083380 A CN200510083380 A CN 200510083380A CN 100428083 C CN100428083 C CN 100428083C
- Authority
- CN
- China
- Prior art keywords
- handle box
- photosensitive drums
- hole
- master unit
- drive parts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The present invention relates to a treatment box for an image forming device of electrophotography, the main components of which are detachable; wherein, the main components comprise a motor, a side gear of the main components that is used for receiving drive force from the motor, and a non-twisting hole that is essentially coaxial with the gear. The treatment box comprises a sensitometric drum for electrophotography, a treatment device that can act on the electrophotography, and a non-twisting bulge that is engaged with the hole. The bulge is arranged at the vertical end of the sensitometric drum. When the side gear of the main components rotates and the hole and the bulge are engaged with each other, the rotational drive force can be transmitted from the gear to the sensitometric drum through the engagement between the hole and the bulge.
Description
The application is that application number is 97119671.0, denomination of invention is divided an application for the patented claim of " handle box and electrical photographic imaging device ".
Technical field
The present invention relates to handle box and electrical photographic imaging device.
Background technology
Wherein, electrical photographic imaging device answers electricity consumption photograph imaging to handle imaging on recording medium.The example of electrical photographic imaging device comprises electrophotographic copier, electric photograph printer (laser beam printer, LED printer etc.), facsimile recorder and word processor or the like.
This handle box comprises electric photosensitive spare and charging device altogether, developing device or scavenge unit, and be detachable the installation for the master unit of imaging device.This handle box can comprise electric photosensitive spare and with lower member one of at least altogether: charging device, developing device and scavenge unit.As another example, handle box can comprise electric photosensitive spare and also have developing device at least.
In the electrical photographic imaging device of answering electricity consumption photograph imaging to handle, used handle box, this handle box comprises electric photosensitive spare and can act on treating apparatus on the described electric photosensitive spare, and this handle box is detachable the installation as a unit to the master unit of imaging device (handle box type).Use this handle box type, need not to rely on the maintenance personal effectively to keep in repair device by the user.Thereby the handle box type is widely used in the electrical photographic imaging device now.
Summary of the invention
The present invention is intended to further improve this handle box.The drive system of sensitive piece is disclosed in U.S. Patent No. 4,829 in the handle box type, and 335 and 5,023,660.
So fundamental purpose of the present invention is that a kind of handle box and electrical photographic imaging device will be provided, wherein improved the running accuracy of electric photosensitive drum.
Another object of the present invention provides a kind of handle box and electrical photographic imaging device, wherein by between the stupefied limit in a projection and a hole in abutting connection with the transmission driving force.
Another purpose of the present invention is that a kind of handle box and electrical photographic imaging device will be provided, and the engagement between its protrusions and the hole is stable.
Another object of the present invention is that a kind of handle box and electrical photographic imaging device will be provided, and wherein driving force is by the electric photosensitive drum that is meshed and transmitted between non-distortion projection and the non-distortion hole.
Another object of the present invention is that a kind of handle box and electrical photographic imaging device will be provided, the surface of its protrusions and distortion is engageable, and this projection is located at vertical end of photosensitive drums, its protrusions is not twisted, and when the rotation of master unit side gear and hole and projection are engaged with each other, by the engagement rotary driving force between hole and the projection from this gear drive to photosensitive drums.
Another object of the present invention is that a kind of handle box and electrical photographic imaging device will be provided, the surface of its protrusions and distortion is engageable, and this projection is located at vertical end of photosensitive drums, its protrusions is not twisted, and when the rotation of master unit side gear and hole and projection are engaged with each other, by the engagement rotary driving force between hole and the projection from this gear drive to photosensitive drums, and its protrusions is not spurred by the hole.
Another object of the present invention is that a kind of handle box and electrical photographic imaging device will be provided, and wherein when handle box was installed to the master unit of imaging device, handle box was in the vertically correct location of photosensitive drums.
Another object of the present invention is that a kind of handle box and electrical photographic imaging device will be provided, when working of plastics wherein being housed being installed to the master unit of imaging device with convenient handle box at vertical promotion handle box of photosensitive drums.
When the following explanation of studying preferred embodiment of the present invention in conjunction with the accompanying drawings, these and other objects of the present invention, characteristics and advantage will be more obvious.
Description of drawings
Fig. 1 is the vertical sectional view of an electrical photographic imaging device.
Fig. 2 is the external perspective view of device shown in Figure 1.
Fig. 3 is the cut-open view of handle box.
Fig. 4 is the external perspective view of the right-hand handle box of seeing shown in Figure 3 from the top.
Fig. 5 is a handle box right side view shown in Figure 3.
Fig. 6 is a handle box left side view shown in Figure 3.
Fig. 7 is the external perspective view of the handle box shown in Figure 3 seen from the top left.
Fig. 8 is the external perspective view of handle box bottom left shown in Figure 3.
Fig. 9 is the external perspective view of handle box holding portion of the master unit of device shown in Figure 1.
Figure 10 is the external perspective view of handle box holding portion of the master unit of device shown in Figure 1.
Figure 11 is the vertical sectional view that photosensitive drums and being used to drives the driving mechanism of photosensitive drums.
Figure 12 is the skeleton view of clearing cell.
Figure 13 is the skeleton view of picture display unit.
Figure 14 is the skeleton view according to the drum flange of first embodiment (driving force drive disk assembly).
Figure 15 is the skeleton view according to the photosensitive drums of the embodiment of the invention 1.
Figure 16 is according to the skeleton view of the side shaft coupling part of the handle box of the embodiment of the invention 1.
Figure 17 is used for the skeleton view that the handle box of electrical photographic imaging device is connected with the master unit axis according to the embodiment of the invention 1.
Figure 18 is the cut-open view of the drive system of installing in the master unit according to the embodiment of the invention 1 electrical photographic imaging device.
Figure 19 be according to the first embodiment of the invention device be contained in the handle box the axle link and be contained in the master unit the axle link skeleton view.
Figure 20 is being contained in the axle link in the handle box and being contained in the skeleton view of the axle link in the master unit according to the embodiment of the invention 1 device.
Figure 21 is according to the coupling part of the master unit of the embodiment of the invention 1 device and the longitudinal sectional view of housing.
Figure 22 is the side view of cloudy coupling shaft structure according to an embodiment of the invention.
Figure 23 is a side view, and expression is installed to the master unit of device or the axial structure of cloudy connection when it is taken apart according to the embodiment of the invention 1 when handle box.
Figure 24 (a) (b) is the cut-open view of getting perpendicular to the plane of the axle of positive connection bump and depression according to the embodiment of the invention 1 edge.
Figure 25 is the skeleton view of positive connection bump according to another embodiment of the present invention.
Figure 26 is the skeleton view of positive connection bump according to still another embodiment of the invention.
Figure 27 is the skeleton view of positive connection bump according to still another embodiment of the invention.
Figure 28 is the skeleton view of the connection status that axle is connected between handle box and the master unit of indication device.
Figure 29 is the skeleton view of positive connection bump according to still another embodiment of the invention.
Figure 30 is a side view, and the elastic component that wherein is used for oppressing handle box is contained in the master unit of device.
Figure 31 is a side view, and the elastic component that wherein is used for oppressing handle box is contained in the handle box.
Embodiment
Hereinafter with reference to the description of drawings embodiments of the invention.
Below, preferred embodiments of the present invention will be described.In the following description, " laterally " of handle box B is meant that handle box packs into or from its direction that draws off to the master unit of imaging device, and this direction is consistent with the recording medium direction of transfer." vertically " of handle box B is meant the direction of packing into or intersecting from the direction that it draws off to master unit 14 with handle box B.It is parallel with recording medium surface and intersect (perpendicular) with the recording medium direction of transfer.And then, " left side " or " right side " be meant with respect to the recording medium direction of transfer see from the top a left side and right.
Fig. 1 is an enforcement electrical photographic imaging device of the present invention (laser beam printer), has described its general structure; Fig. 2 is its external perspective view; And Fig. 3-the 8th, the diagram of enforcement handle box of the present invention.Specifically, Fig. 3 is the cut-open view of handle box; The outside cut-open view of Fig. 4 handle box; Fig. 5 is the right side view of handle box; Fig. 6 is the left side view of handle box; Fig. 7 is the skeleton view of the handle box seen from the top left; Fig. 8 is the skeleton view of the handle box seen from bottom left.In the following description, " end face " of handle box B is meant the surface that makes progress when handle box B is in the master unit 14 of imaging device, and " bottom surface " is meant downward surface.
(electrical photographic imaging device A and handle box B)
At first, illustrate as the laser beam printer A that implements an electrical photographic imaging device of the present invention referring to Fig. 1 and 2.Fig. 3 is for also being the cut-open view of implementing handle box of the present invention.
Referring to Fig. 1, laser beam printer A handles in recording medium (for example recording chart, OHP sheet, and textile) by electricity photograph imaging to go up the device that forms image.The form that this device is gone up with drum at electric photosensitive drum (hereinafter referred to as photosensitive drums) forms a toner image.Specifically, use the charging device photosensitive drums to be recharged, project the outside surface of photosensitive drum charging from optical devices, form a latent image according to pictorial data thereon by the laser beam of the pictorial data modulation of target image.This latent image is a toner image by the developing device developing.Simultaneously, the recording medium 2 that is placed among the input tray 3a synchronously is inverted and transmits forming of 3e and toner 3c and 3d and tube roll by pick-up roller 3b, transfer roller.Then, the means as shift the toner image that forms on the photosensitive drums 7 of handle box B apply voltage to image transfer roller 4, are transferred on the recording medium 2 with this toner image.After this, the recording medium 2 transferred on it of toner image is sent to device for fixing 5 by guiding forwarder 3f.Device for fixing 5 has driven roller 5c and comprises the fixation roller 5b of well heater 5a, and recording medium 2 during by device for fixing 5 to recording medium 2 heating and pressurizing, so transferred to visual fixation on the recording medium 2 on recording medium 2.Then, further transmit recording medium 2, and 3q, 3h and 3i are discharged in the derivation pallet 6 by counter-rotating path 3j by discharging roller.Derivation pallet 6 is positioned at the top of the master unit 14 of imaging device A.Be noted here that and operate rotating flapper 3k with the release roller to 2m with matching so that make its RR release record medium 2 by counter-rotating path 3j.Pick-up roller 3b, transfer roller are to 3c and 3d, and tube roll is to 3e, and guiding forwarder 3f discharges roller to 3g, 3h and 3i, and the release roller has constituted conveyer 3 to 3m.
On the other hand, referring to Fig. 3-8, the photosensitive drums 7 that has photographic layer 7e (Figure 11) in handle box B is rotated, and by applying voltage to the charging roller 8 as the photosensitive drum charging device is charged equably in its surface.Then, the laser beam of modulating with pictorial data projects on the photosensitive drums 7 by exposure opening 1e from optical system 1, forms latent image on photosensitive drums 7.The latent image developing that uses toner and developing device 9 to make such formation.Specifically, charging roller 8 is set and contacts with photosensitive drums 7 so that photosensitive drums 7 chargings.It is rotated by the rotation of photosensitive drums 7.Developing device 9 provides toner to the outer surface region (wanting the zone of developing) of photosensitive drums 7, makes the latent image developing that forms on the photosensitive drums 7.Optical system 1 comprises a laser diode 1a, a polygon prism 1b, a lens 1c and a deflecting mirror 1d.
In developing device 9, the toner that is included among the toner container 11A is delivered to developing roller 9c by the feed rotation of part 9b of toner.Developing roller 9c comprises a permanent magnet.This magnet also is rotated and makes on the extexine of developing roller 9c and to form the toner layer that one deck has triboelectric charge.Provide toner from this toner layer to the visual developing zone of photosensitive drums 7, this toner is transferred to the outside surface of photosensitive drums 7, and the mode of transfer is to make to reflect latent image, makes this latent image become visible as toner image.Developing scraper plate 9d is that an adjusting is attached to developing roller 9c surface toning dosage and makes the scraper plate of toner triboelectric charging.With developing roller 9c adjacency, rotatably dispose toner and stir part 9d, so that in visual developing cavity, stir toner circularly.
By applying to image transfer roller 4 and the opposite polarity voltage of toner image, make that the toner image that forms on the photosensitive drums 7 is transferred on the recording medium 2 after, toner remaining on the photosensitive drums 7 is removed by scavenge unit 10.Scavenge unit 10 comprises a removing scraper plate 10a who contacts configuration with photosensitive drums 7, and remains in toner on the photosensitive drums 7 and remove scraper plate 10a by plastics and strike off, and is collected among the used toner gatherer 10b.
Handle box B forms in the following manner.At first, the toner cavity 11 that comprises toner container (toner storage compartment) 11A that is used for storing toner is combined into integral body with the visual developing cavity 12 that holds such as visual developing devices 9 such as visual developing roller 9c, then, wherein be equipped with photosensitive drums 7, be combined into whole handle box B such as the scavenge unit 10 of removing scraper plate 10a etc. and the removing cavity 13 of charging roller 8 with aforesaid two cavitys 11 and 12.The handle box B of Xing Chenging is releasably attached in the master unit 14 of imaging device A like this.
Handle box B is provided with an exposure opening, and the light beam of being modulated by pictorial data projects on the photosensitive drums 7 by this opening, and handle box B also has one to shift opening 13n, and is relative with recording medium 2 by this opening photosensitive drums 7.Exposure opening 1e is a part of removing cavity 11, shifts opening 13n then between visual developing cavity 12 and removing cavity 13.
The structure of handle box B housing in the present embodiment below is described.
Handle box in the present embodiment is following formation.
At first, toner cavity 11 is combined into integral body with visual developing cavity 12, and then, removing cavity 13 combines rotationally with aforementioned two cavitys 11 and 12 and forms whole housing.In this housing, above-mentioned photosensitive drums 7 is housed, charging roller 8, developing device 9, scavenge unit 10 grades and form entire process box B.The handle box B of Xing Chenging is releasably attached to the handle box storing apparatus of installing in the master unit 14 of imaging device like this.
(shell mechanism of handle box B)
As mentioned above, the housing of the handle box B of present embodiment forms by toner cavity 11, visual developing cavity 12 and removing cavity 13 are combined into integral body.The structure of the housing that forms so below is described.
Referring to Fig. 3 and 20, in toner cavity 11, toner supply parts 9b is rotatably mounted.In visual developing cavity 12, visual developing roller 9c and developing scraper plate 9d are housed, and with developing roller 9c adjacency, rotatably be equipped with and stir parts 9c so that stir toner in the visual developing cavity periodically.Referring to Fig. 3 and 13, in visual developing cavity 12, flagpole antenna 9h extending longitudinally at developing roller 9c on the direction that is arranged essentially parallel to developing roller 9c is housed.Zhuan Pei toner cavity 11 and 12 welding (passing through ultrasound wave in the present embodiment) of developing roller cavity are whole second framework (Figure 13) that constitutes visual picture display unit D that form in a manner described.
The visual picture display unit of handle box B is equipped with drum protection (shutter) assembly 18, when handle box B shifts out or afterwards the time from the master unit 14 of imaging device, this assembly has covered photosensitive drums 7 and has prevented that it was exposed in the light so that cycle time expand or prevent to contact with exterior object.
Referring to Fig. 6, drum guard assembly 18 has the protective cover 18a that hides or expose transfer opening 13n shown in Figure 3, and web member 18b and the 18c of supporting protection lid 18a arranged.At upstream side with respect to recording medium 2 direction of transfers, the end of right side web member 18c is fixed on shown in Figure 4 and 5 among the hole 40g of developing device gear holder (gear holder) 40, and the end of left side web member 18c is fixed among the bottom 11b supporter 11h of toner cavity 11.In the upstream of the direction that transmits with respect to recording medium, vertical end of other termination installing protective cover 18a correspondence of left side and right side web member 18c.Web member 18c is made by Metallic rod.In fact, the web member 18c on left side and right side is connected by protective cover 18a; In other words, left side and the right-hand end of left side and right side web member 18c single-piece web member 18c.Web member 18b only installs at the vertical end of protective cover 18a.In the downstream with respect to the recording medium direction of transfer, the end of web member 18b is contained in the position that protective cover 18a upper connector 18c is contained in protective cover 18a, and the other end of web member 18b is fixed around the pivot pin 12d of visual developing cavity 12.Web member 18b is formed by synthetic resin.
The photosensitive drums guard assembly of being made up of protective cover 18a and web member 18b and 18c 18 is added with the pressure of turning round coil spring that is contained in around the pivot pin 12d from unshowned.One end of this spring is fixed on web member 18b, and the other end is fixed on the visual developing cavity 12, so produced pressure causing that protective cover 18a covers on the direction that shifts opening 13n.
Come referring to Fig. 3 and 12, scavenge unit framework 13 is fixed with each assembly of photosensitive drums 7, charging roller 8 and removing part 10, has formed first framework (Figure 12) as clearing cell C again.
Then, above-mentioned visual picture display unit D and clearing cell C use conjunction 22 rotatably to be combined into integral body, form handle box B.Specifically, referring to Figure 13, an arm member 19 that is provided with the circular hole 20 that is parallel to developing roller 9c is equipped with at vertically (developing roller 9c's is axial) two ends of visual developing cavity 12.On the other hand, the sunk part 21 that is used for holding arm member 19 is located at each vertical end (Figure 12) of removing cavity.Arm member 19 is inserted in this sunk part 21, and web member 22 is pressed to the mounting hole 13e that removes cavity 13, by arm member 19 end portion holes 20, and and then press to the hole 13e of partition wall 13t, make visual picture display unit D and clearing cell C rotatably be combined into integral body toward each other around web member 22.When visual picture display unit D and clearing cell C are combined into integral body, helical compression spring 22a places between two unit, a helical spring end is fixed around the unshowned pivot pin of setting up from the base portion of arm member 19, and the other end props up the roof of the sunk part 21 of removing cavity 13.As a result, visual developing cavity 12 keeps being pressed towards the developing roller 9c of below towards photosensitive drums 7 to pressing down reliably.Specifically, referring to Figure 13, diameter is contained in each vertical end of developing roller 9c greater than the roller 9i of developing roller 9c, and this roller 9i is forced on the photosensitive drums 7, keeps gap (about 300 μ m) predetermined between photosensitive drums 7 and the developing roller 9c.The end face of removing the sunk part 21 of cavity 13 tilts, and makes that helical compression spring 22a gradually reduces when visual picture display unit D combines with clearing cell C.That is, visual picture display unit D and clearing cell C can rotate relative to one another around web member 22, and wherein the relation of the position between the outside surface of the outside surface of photosensitive drums 7 and developing roller 9c (gap) is accurately kept by the elastic force of helical compression spring 22a.
Because helical compression spring 22a is contained in the base portion of the arm member 19 of visual developing cavity 12, the elastic force of helical compression spring 22a only acts on the base portion of arm member 19.At visual developing cavity 12 the special bullet spring abutment that is used for helical compression spring 22a is housed, the adjacency that must reinforce the spring location is with the predetermined gap between accurate maintenance photosensitive drums 7 and the developing roller 9c.Yet, the configuration of helical compression spring 22a in a manner described, the adjacency of the spring that do not need reinforcement location is promptly in the adjacency of the base portion of the situation lower arm components 19 of this embodiment, because the base portion of arm member 19 just has bigger strength and stiffness originally.
To illustrate above-mentioned after a while in more detail removing the structure that cavity 13 and visual developing cavity 12 keep together.
(structure of handle box B guide piece)
Below explanation is when handle box B the lead device of handle box B of the master unit 14 of imaging device or be used for when it draws off of packing into.This guide piece is shown in Fig. 9 and 10.Fig. 9 is the skeleton view that is installed to the guide piece left side of (in the direction of arrow label X) seen the master unit 14 of imaging device A (from visual picture display unit D one side finding) from handle box B.Figure 10 is the skeleton view of the guide piece right-hand side seen from phase the same side.
Referring to Fig. 4,5,6 and 7, each that remove frame part 13 vertically end be equipped with the master unit 14 of handle box B charging apparatus or when it is dismantled as the device of guide rail.This guide piece is by cylindrical slideway 13aR and 13aL as the positioning and guiding spare of box, and as the Spin Control guide rail 13bR and the 13bL composition of the state device of control handle box B when handle box B packs into or draws off.
As shown in Figure 5, cylindrical slideway 13aR is the cylindrical member of chamfered edge.Spin Control guide rail 13bR and cylindrical slideway 13aR are together whole to be formed, and extends radially out from the outside surface of cylindrical slideway 13aR.Cylindrical slideway 13aR is equipped with the mounting flange 13aR1 that becomes an integral body with cylindrical slideway 13aR.Cylindrical slideway 13aR like this, Spin Control guide rail 13bR, and mounting flange 13aR1 forms right-hand side rail guide piece 13R, this rail guide piece uses the Screw of the screw hole that passes mounting flange 13aR1 to be fixed to and removes on the cavity 13.Because being fixed to, removes on the cavity 13, right-hand side rail guide piece 13R so Spin Control guide rail 13bR extends on the sidewall of the developing device gear holder 40 that is fixed on visual developing cavity 12.
Referring to Figure 11, the photosensitive drum shaft parts are by the photosensitive drum shaft part 7a that comprises than major diameter part 7a2, and plate-like flange section 29 and cylindrical slideway part 13aL form.Be fixed among the hole 13k1 that removes cavity part 13 than major diameter part 7a2.The pilot pin 13c engagement that plate-like flange section 29 and sidewall from vertical end wall of removing cavity part 13 stretch out, and use Screw 13d to be fixed to and remove on the cavity part 13.Cylindrical slideway 13aL outwards (forward, promptly perpendicular to the page direction of Fig. 6) stretches out.The fixing drum axle 7a that the spur gear 7n that fixes around photosensitive drums 7 is supported in above-mentioned rotation stretches out (Figure 11) inwards from flange 29.Cylindrical slideway 13aL and drum axle 7a are coaxial.Flange 29, cylindrical slideway 13aL and drum axle 7a form by the metal material such as steel is whole.
Referring to Fig. 6, a Spin Control guide rail 13bL separates a little with cylindrical slideway 13aL.It is a long narrow guide rail, and the circumferentially extending at cylindrical slideway 13aL also also is protruding from removing cavity 13 basically.This guide rail is integrally formed with removing cavity 13.In order to hold this Spin Control guide rail 13bL, flange 29 has an excision part.The outwards outstanding distance of Spin Control guide rail 13bL makes its end face concordant with the end face of cylindrical slideway 13aL basically.Spin Control guide rail 13bL reaches outside the sidewall of the developing roller bearing box 9v that is fixed on visual developing cavity 12.Obviously as seen, left-hand side guide 13L is made of two parts that separate: the Spin Control guide rail 13bL of round metal cylindricality guide rail 13aL and synthetic resin from the above description.
Adjusting contact portion as the part of the end face of removing cavity 13 below will be described.In the following explanation of regulating contact portion 13j, " end face " is meant the surface that makes progress when time in the master unit 14 of handle box B at imaging device.
Referring to Fig. 4-7, two parts 13j of the end face 13i of clearing cell C, promptly near with respect to the right side of the direction of inserting perpendicular to handle box B and the part of left-front corner 13p and 13q, constitute and regulate contact portion 13j, this part is regulated position and the state of handle box B when handle box B is installed in the master unit 14.In other words, when handle box B is installed in the master unit 14, regulates fixed contact therefor 25 contacts (Fig. 9 and 10) in the master unit 14 that contact portion 13j is contained in imaging device, and regulate the rotation of B around cylindrical slideway 13aR and 13aL.
Guide piece on the master unit 14 below is described.Referring to Fig. 1, during around strong point 35a counter-clockwise direction turn-off, open at the top of master unit 14, and the handle box holding portion occurs as shown in Figures 9 and 10 at the housing 35 of the master unit 14 of imaging device.With respect to the direction that handle box B inserts, the left side of the master unit 14 of imaging device and right inwall are equipped with guiding parts 16L (Fig. 9) and 16R (Figure 10) respectively, and these parts stretch out downwards diagonally with respect to strong point 35a from the side.
As shown in the figure, guiding parts 16L and 16R comprise targeting part 16a and 16c, and are connected respectively to locating slot 16b and the 16d of targeting part 16a and 16c.From the direction of arrow label X indication, targeting part 16a and 16c extend downwards diagonally, i.e. the direction of handle box B insertion.Locating slot 16b and 16d have the good fit semi-circular cross-section of section with cylindrical slideway 13aL and the 13aR of handle box B.After handle box B inserted the master unit 14 of device fully, the semi-circular cross-section center of locating slot 16b and 16d overlapped respectively with the cylindrical slideway 13aL of handle box B and the axis of 13aR, thus with the dead in line of photosensitive drums 7.
From the width of handle box B installs or unloading direction is seen targeting part 16a and 16c be enough to allow cylindrical slideway 13aL and 13aR on them with suitable surplus walking.Thereby, Spin Control guide rail 13bL and the 13bR narrower than the diameter of cylindrical slideway 13aL and 13aR cooperate in targeting part 16a and 16c than cylindrical slideway 13aL and 13aR respectively naturally more loosely, and their rotation is still by targeting part 16a and 16c control.In other words, when handle box B installed, the angle of handle box B remained on predetermined scope.After handle box B is installed to the master unit 14 of imaging device, the locating slot 16b of the cylindrical slideway 13aL of handle box B and 13aR and guide 13L and 13R and 16d engagement, and a left side and right adjusting contact portion 13j that the removing cavity 13 of handle box B is positioned at respect to direction of insertion the place ahead of box contact with fixed positioning piece 25 respectively.
The weight distribution of handle box B makes that when the straight line with cylindrical slideway 13aL and 13aR dead in line was level, the visual picture display unit D side of handle box B produced than the big torque of clearing cell C side this straight line.
Handle box B is installed in the master unit 14 of imaging device in the following manner.At first, catch sunk part 17 and the rib shape part 11c of handle box B with a hand, targeting part 116a and 116c that cylindrical slideway 13aL and the 13aR of handle box B inserted the box holding portion in the imaging device master unit 14 respectively, and Spin Control guide rail 13bL and 13bR also insert targeting part 116a and 116c, with respect to the front portion of the downward-sloping handle box B of direction of insertion.Then, further insert handle box B, reach the locating slot 116b and the 116d of imaging device master unit 14 up to cylindrical slideway 13aL and 13aR with cylindrical slideway 13aL and the 13aR of handle box B and the Spin Control guide rail 13bL and the 13bR that follow targeting part 116a and 116c respectively.Then, cylindrical slideway 13aL and 13aR are owing to the gravity of handle box B itself is positioned at respectively among locating slot 116b and the 116d; Cylindrical slideway 13aL and the 13aR of handle box B accurately locate with respect to locating slot 116b and 116d.In this state, with the straight line of cylindrical slideway 13aL and 13aR dead in line also with the dead in line of photosensitive drums 7, thereby photosensitive drums 7 is suitably accurately located with respect to the master unit 14 of imaging device.Here be noted that photosensitive drums 7 is to occur with combining when finishing with respect to the final position of the master unit 14 of imaging device between the two.
Again in this state, between the adjusting contact portion 13j of the fixed positioning piece 25 of the master unit 14 of imaging device and handle box B, a little gap is arranged.At this moment, handle box B discharges from hand.Handle box B rotates on the direction of the visual picture display unit D side of reduction and the clearing cell C side that raises around cylindrical slideway 13aL and 13aR then, up to the adjusting contact portion 13j of handle box B and corresponding fixed positioning piece 25 contacts.As a result, handle box B accurately locatees with respect to the master unit 14 of imaging device.Then, make it closed by the housing 35 that turns clockwise around strong point 35a.
For the master unit 14 from device draws off handle box B, above-mentioned steps is reversed.Specifically, at first open the housing 35 of this master unit 14, and to catch the above-mentioned top of handle box and the rib shape part 11c of bottom with hand be that portion of the handle upwards spurs handle box B.Then, the cylindrical slideway 13aL of handle box B and 13aR rotate in the locating slot 116b of master unit 14 of device and 116d.As a result, the adjusting contact portion 13j of handle box B separates with corresponding fixed positioning piece 25.Handle box B is further pulled out then.Then, cylindrical slideway 13aL and 13aR shift out locating slot 116b and 116d, and move on to the guide 116L of the master unit 14 that is fixed on device and rail sections 116a and the 116c of 116R respectively.In this state, handle box B is further pulled out.Then, the rail sections 116a and the 116c of the cylindrical slideway 13aL of handle box B and 13aR and Spin Control guide rail 13bL and the 13bR master unit 14 by device upwards slide diagonally, and the angle of control and treatment box B makes handle box B contact and can shift out fully from the master unit 14 that installs with part outside the 116c with rail sections 116a.
Referring to Figure 12, spur gear 7n cooperates around one of vertical end of photosensitive drums 7, and this end is and spiral drum gear 7b cooperates the relative end of part.When handle box B is inserted into the master unit 14 of device, a coaxial gear (not shown) engagement of image transfer roller 4 in spur gear 7n and the master unit that is located on device, and drive the driving force of transferring roller 4 rotations to transferring roller 4 transmissions from handle box B.
(connecting and drives structure)
Below will describe for the structure of shaft connector, this device is the drive transmission device from the master unit of imaging device to handle box.
Figure 14 is conduct and the skeleton view of positive coupling shaft 17 for the drum flange 16 of holistic driving force drive disk assembly; Figure 15 is the skeleton view of partly cut-away that is installed to the photosensitive drums 7 of drum flange 16; Figure 16 is the skeleton view around positive coupling shaft 17 amplifications of handle box B shown in Figure 11; Figure 17 is the synoptic diagram that concerns between positive coupling shaft 17 (being contained among the handle box B) as shaft coupling piece and the cloudy coupling shaft 18 (being contained in the master unit 13).
To shown in Figure 17, the handle box shaft connector is installed in vertical end of the photosensitive drums 7 that installs to handle box B as Figure 11, Figure 15.Shaft connector is the form that is fixed on the drum flange 16 Shangyang coupling shafts 17 (cylindrical configuration) of photosensitive drums 7 one ends, and has the protruding 17a of non-distortion in the free end formation of positive coupling shaft 17.Sun coupling shaft 17 is engaged among bearing 24 and the axle casing 24s as the drum axle.In this example, drum flange 16, positive coupling shaft 17 and protruding 17a are integrally formed.Spiral drum gear 16a integrally is housed drum flange 16 so that the developing roller 10d transmission driving force in handle box B.Thereby as shown in figure 14, drum flange 16 is integral die goods of a plastic resin, and it has cross helical gear 16a, connects sun axle 17, and will constitute the driving force drive disk assembly with transmission driving force function at following protruding 17a that will illustrate and joggle piece 16b.
In theory, the profile position of a three-dimensional part is by stably determining perpendicular to the contact point in their plane of axis.When the contact position 17a1 of protruding 17a is in the plane is the summit of equilateral triangle substantially, and when the profile pattern of depression 18a was equilateral triangle basically, then the contact portion 17a1 of protruding 17a contacted under identical state with the inside surface 18a1 of the equilateral triangle of depression 18a.Thereby, because the variation of the variation institute contact point extremely of load and the rotation non-uniformity that connects driving are lowered to minimum during the rotation of handle box B, so improved the running accuracy of photosensitive drums 7.
Figure 28 represents the engagement between protruding 17a and the depression 18a.As shown in Figure 28, when driving force from depression 18a when being transferred to protruding 17a, the neighborhood 17a3 of the base portion of protruding 17a (than the part of the more close axial region 17 of free end 17a2) touches the angle part (limit is stupefied) of the inlet 18a3 of depression 18a.Projection 17a does not contact the inclined surface 18a1 of depression 18a.Like this, triangular prism 17a and depression (hole) 18a engagement, and hole 18a is rotated.The base portion 17a3 of the triangular prism 17a angle part 18a4 that touches the inlet 18a3 of hole 18a makes its position with respect to the hole be determined then.Because base section has the intensity higher than other parts, thereby triangular prism (projection) can not be out of shape.The angle part of triangular prism and/or the intake section local deformation of arriving the hole make the angle part eat the into inside surface in hole.Thereby the connection between depression and the hole is more stable.Effect superior when link is plastic resin material is more obvious.
When handle box B was installed on the master unit 13, the cylindrical slideway 9aL coaxial with drum axle 7d cooperated (Fig. 9) with the U-lag of master unit 13, cooperated with the gear (not shown) that is used for to transferring roller 4 transmission driving forces with the spur gear 25b of drum flange 25 integral dies.
Around the protruding 17a of the positive coupling shaft 17 of handle box B, cylindrical bosses (boss) 24a (Fig. 4,11 and 16) of the chamfered edge concentric with removing cavity 12c middle-jiao yang, function of the spleen and stomach axle 17 is housed.When handle box B is installed to master unit or when it is removed, positive connection bump 17a is by wheel hub 24a protection, thereby reduced the possibility of its damage or distortion.So, can avoid connect to drive operating period since the damage of protruding 17a extremely vibration or wave.
Wheel hub 24a also plays when handle box B is installed on the master unit 13 effect as its cylindrical slideway 9aR.When handle box B is installed to master unit, wheel hub 24a and master unit side rails part 15c adjacency, and wheel hub 24a plays the effect that handle box B is installed to the installation site guide, so be convenient to the installation and removal of handle box B with respect to the master unit 13 of device.When handle box B had been installed to the installation site, described wheel hub 24a was supported by the U-lag 15d that is located at the depression among the rail sections 15c.When positive coupling shaft 17 and cloudy axle 18 by the driving force that is applied to imaging operation to timing, wheel hub 24a mentions (approximately 0.3-1.0) a little from groove 15d, and wherein the gap between wheel hub 24a and the master unit rail sections 15c (U-lag 15d) is less than the radial play between positive connection bump 17a and the depression 18a.Thereby the cooperation between positive connection bump 17a and the depression 18a can be in the state that handle box B can be installed to master unit 13.Aft section at groove 15d is provided with depression 18a.The configuration of wheel hub 14a is not limited to the cylindrical of present embodiment, and needs not to be complete cylindrical, but can be the cylindrical installation of part, makes that it can be by rail sections 15c guiding, and can be supported by groove 15d.In the present embodiment, the cylindrical bosses 24a and the bearing (bearing) the 24th that are used for rotatable support sun coupling shaft 17, integral die forming, and be installed to the screw (not shown) and remove framework 12c (Figure 11), but this is not necessarily, and bearing 24 and wheel hub 24a can be separated components.
In the present embodiment, drum flange 25 cooperates (Figure 11) with a drum axle 7d who is contained in removing framework 12c, and positive coupling shaft 17 cooperates with the inside surface that is contained in the bearing 24 of removing framework 12c; And in this state, photosensitive drums 7 is installed on the removing framework 12c of handle box B.Then, photosensitive drums 7 is around drum axle 7d and 17 rotations of positive coupling shaft.In the present embodiment,, axially-movable photosensitive drums 7 removes framework 12c for being installed to.Doing like this is the franchise of considering installation.This is not necessary, photosensitive drums 7 can axially be Immobile (for example, can use following with the explanation photosensitive drum shaft to the location).
On the other hand, the master unit 13 of imaging device is equipped with master unit side shaft coupling arrangement.Master unit side shaft coupling arrangement has cloudy coupling shaft 18 (cylindrical configuration) a position, in this position when this cooperates with the shaft coupling piece of cartridge side and is rotated, photosensitive drums the axle and rotating shaft coaxle.As Figure 11, shown in 18, cloudy coupling shaft 18 is an integral body with being used for from motor 30 to the gear wheel 34 of photosensitive drums 7 transmission driving forces.Cloudy coupling shaft 18 is outstanding at the rotation center of gear wheel 34 from the side of gear wheel 34.In the present embodiment, gear wheel 34 and cloudy coupling shaft 18 are made by mold pressing integral body.
The gear wheel 34 that is contained in the master unit 13 is cross helical gears.When as Figure 11, cross helical gear shown in 18 is fixed on pinion wheel 20 on the axle 30a of intercom 30 when receiving driving forces from spirality, because the vergence direction of tooth and angle produce the expulsive force that promotes cloudy coupling shaft 18 trend sun spools 17.Like this, when in order to form visual motor 30 and to be driven, also make axle 17 motions on the sunny side of cloudy coupling shaft 18 owing to be added to the thrust of the cooperation between depression 18a and the protruding 17a.Depression 18a connects 18 free end and connects 18 rotation center at the moon at the moon to form.
In the present embodiment, driving force is directly to be transferred to gear wheel 34 from the pinion wheel 20 that is fixed on the motor reel 30a, but this is not necessarily, and in order to realize that the deceleration transmission can use the gear string, a pair of friction roller, (timing) belt and pulley or the like synchronously.
(openable housing and the relevant apparatus of axle between being connected)
Referring to Figure 21 to 23, illustrate to be used for cooperating depression 18a relevant and the structure of protruding 17a with the shutoff operation of openable housing 14.
As shown in figure 23, side plate 40 is fixed between the gear wheel 34 and side plate 39 in the master unit 13, is rotatably supported by side plate 67,66 with gear wheel 34 whole coaxial cloudy coupling shafts 18.External cam 35 and cam ring 36 closely are inserted between gear wheel 34 and the side plate 40.Cam ring 36 is fixed on the side plate 40, and external cam 35 cooperates with cloudy coupling shaft 18 rotations.Be substantially perpendicular to axially and the surface of external cam 35 respect to one another and cam ring 36 is a cam surface, and be the helicoid coaxial, and contact with each other with cloudy coupling shaft 18.Between gear wheel 34 and side plate 39, the helical compression spring 38 and be contained in the periphery of cloudy coupling shaft 18 of extruding.
As shown in figure 21, outer being trapped among of external cam 35 extends radially out arm 35a, and the termination of arm 35a is closed Shi Yucong by pin 37a and 37b at openable housing 14 and opened the relative position of side and be connected with an end of connecting rod 37.
Figure 22 is the view of seeing from the right side of Figure 21.When openable housing 14 is closed, connecting rod 37, external cam 35 grades are in the position shown in the figure, and the cooperation of its middle-jiao yang, function of the spleen and stomach coupling shaft 17a and depression 18a makes driving force to be transferred to photosensitive drums 7 from gear wheel 34.When openable housing 14 was opened, pin 37a upwards rotated around axle 14a, so arm 35a is upwards drawn by connecting rod 37, and external cam 35 is rotated; So, between external cam 35 and cam ring 36, cause relative slip, gear wheel 34 is moved and leave photosensitive drums 7.At this moment, gear wheel 34 is promoted by external cam 35, and is resisting and be installed in the helical compression spring 38 between side plate 39 and the gear wheel 34 and move, so as shown in figure 23, the cloudy depression 18a that connects cooperates with positive connection bump 17a disengaging, makes handle box B enter detachable state so that discharge this connection.
Otherwise, when openable housing 14 is closed, connect connecting rod 37 and be rotated down around axle 14a with the pin 37a that can open housing 14.Connecting rod 37 moves downward and pusher arm 35a is downward, makes external cam 35 in the opposite direction rotate and promoted by helical compression spring 38.Thus, gear wheel 34 promoted left from position shown in Figure 23 to make gear wheel 34 be repositioned at the position of Figure 22 to position motion shown in Figure 22 by spring 38, but and the cloudy depression 18a that connects cooperates with positive connection bump 17a and rebulids the driving drive state.Like this, respond the opening and closing of openable housing 35, but can set up disassembly status and the driving drive state of handle box B.When by openable housing 14 close that external cam 35 is in the opposite direction rotated and mobile gear wheel 34 from the position of Figure 23 left the time, the end face of cloudy coupling shaft 18 and positive coupling shaft 17 may be adjacent to each other, and makes positive connection bump 17a can not be engaged with each other with the cloudy depression 18a that is connected.Yet as described below, as long as imaging device A starts, they just enter engagement.
So in the present embodiment, be installed to the master unit 13 of device or when it was dismantled, openable housing 14 was opened as handle box B.With the mutual relationship of the opening and closing of openable housing 14 in, cloudy connect depression 18a in the horizontal direction (arrow j indicated direction) move.When handle box B is installed to master unit 13 or when it is dismantled, (17a, 18a) the no longer engagement of being connected of master unit 14 and handle box B.And they should not be engaged.Like this, handle box B can carry out reposefully with respect to the installation and removal of master unit 13.In this example, under the effect of helical compression spring 38, force the cloudy depression 18a that connects to move to handle box B downwards by gear wheel 34.When positive connection bump 17a entered engagement with depression 18a, they may be adjacent to each other, thereby they are not suitably to mesh.Yet when motor 30 at first rotated after handle box B is installed to master unit 13, the cloudy depression 18a that connects rotated, and they enter engagement immediately thus.
(positive coupling shaft and cloudy axle)
Effect at shaft connection mechanism protrusions 17a and depression 18a below will be described.
The support that is contained in the cloudy coupling shaft 18 in the master unit 13 makes it axially can move, but radially can not move.Handle box B is installed on the master unit 3 for moving radially of photosensitive drums 7.
When handle box B is installed to the master unit 13 of device, be installed to the concentric cylindrical slideway 9aL of the drum axle 7d (Figure 11) of drum flange 25 of another vertical termination of photosensitive drums 7 with support and seamlessly enter U-lag 15b (Fig. 9) in the receiver part of master unit 13, and correct location, and enter engagement fit with a gear (not shown) with the spur gear 25b of drum flange 25 integral die formings, so that to transferring roller 4 transmission driving forces.On the other hand, vertically hold (driving side), support by the U-lag 15d that is contained on the master unit 14 at the wheel hub 24a that removes formation on the framework 13 in one of photosensitive drums 7.
By openable housing 14 is closed, cloudy coupling shaft 18 coupling shaft 17 on the sunny side moves, and if protruding 17a align with the phase place that caves between the 18a, then cave in 18a and protruding 17a are in axial engagement.At this moment, if phase place does not align, then positive coupling shaft 17 end face 17a2 are in abutting connection with the end face of cloudy coupling shaft 18, and are promoted by the spring force of helical compression spring 38.
Then, the operation of drive-side shaft web member is as follows.
When driving motor 30 rotates, (every rotation reaches the phase place unanimity for 120 ° in the present embodiment) cloudy coupling shaft 18 is promoted forward by the spring force of helical compression spring 38 when protruding 17a is consistent with the phase place of depression between the 18a, so they are engaged with each other, and revolving force is transferred to handle box B from master unit 13.
When the gapped engagement of axle connecting band the projection 17a enter smoothly the depression 18a, shown in Figure 24 (a) because the depression 18a section (being equilateral triangle basically) greater than protruding 17a.Like this, static setting accuracy does not need very strictly between positive coupling shaft 17 and the cloudy coupling shaft 18, and can be coarse.
In the present embodiment, the projection length of above-mentioned cylindrical bosses 24a is than the projection length big (Figure 11) of protruding 17a.When protruding 17a meshed with depression 18a, the effect of engagement guide rail between them was played in the peripheral surface engagement of the inside surface of cylindrical bosses 24a and cloudy coupling shaft 18.
When protruding 17a enters depression cloudy coupling shaft 18 rotates after the 18a, when imaging, the stupefied limit 18a1 of the porch of depression 18a and the contact portion 17a1 of protruding 17a in abutting connection with and allow the driving force transmission.At this moment, positive coupling shaft 17 moves immediately, and makes the contact portion 17a1 of the stupefied limit 18a1 of porch of depression 18a and protruding 17a contact equably (from the state shown in Figure 24 (a) to the state shown in Figure 24 (b)).Because contact portion 17a1 exists on each summit that is essentially equilateral triangle, thus when contact force basic when even positive coupling shaft 17 and cloudy coupling shaft 18 become coaxial.Particularly, after protruding 17a entered depression 18a, the center X1 of protruding 17a and the center X2 of depression 18a no longer aligned (Figure 24 (a)).As depression 18a when beginning to rotate, it is inboard to contact with three contact portion 17a1 of protruding 17a, center X1 then, and X2 aligns (Figure 24 (b)) substantially.
Because a kind of like this structure can carry out aligning from moving axis between sun coupling shaft 17 and the cloudy coupling shaft 18 when motor 30 operations.By to photosensitive drums 7 transmission driving forces, B applies rotating force to handle box.Like this, be contained in handle box B removing framework 12c upper surface adjacency (part) 9j (Fig. 7) be installed on adjacent part 26 (Fig. 9,10) adjacency in the master unit 13, make handle box B correctly locate with respect to master unit 13.
When having the transmission driving force (when imaging operation is not carried out), the footpath does not upwards produce a gap between imaging device and depression 18a, makes the installation and removal of axle connection and handle box B be easy to carry out with separating with respect to the engagement of master unit 13.When driving, apply acting force reposefully, make it possible to suppress to rock and vibrate.
In the present embodiment, to have be the shape of equilateral triangle basically for positive connection bump and depression, but have and can provide same effect when connecting the contact portion that caves in corresponding to the moon when they are essentially the polygon of rule and projection.Basically Gui Ze polygon configuration is desirable, because at this moment the location can be with done with high accuracy, but this is not restriction, makes that setting up axle with axial force aligns if be shaped as, and then other polygonal shape also can use.
When more positive connection bump and when depression, projection is easy to damage naturally, thus the intensity of the strength ratio of projection depression will a little less than.Consider this point, present embodiment makes positive connection bump be installed among the removable handle box B, and the cloudy depression that connects is contained in the imaging device master unit 13 of permanance that need be more higher than handle box.
Getting handle box B is example, and present embodiment is summarized as follows.Handle box B is removable with respect to the master unit 13 of the electrical photographic imaging device A that is used in recording medium 2 imaging, described device comprises a motor 30, one is used for from the gear wheel 34 of motor 30 reception driving forces, with the depression 18a of gear wheel 34 whole rotatable prismatic configuration hole shapes, described hole is at the core of gear wheel 34.Described treatments B comprises an electric photosensitive drum 7, can act on the treating apparatus (live-roller 8 on the electric photosensitive drum 7, developing roller 10d, remove scraper plate 11a), with the depression 18a engagement and the protruding 17a that can contact, wherein be installed to the master unit 13 of device, and gear wheel 34 is along with the handle box B rotation of depression 18a engagement the time when treatments B with its inside surface, revolving force is transferred to electric photosensitive drum 7 from gear wheel 34, makes positive coupling shaft 17 and cloudy coupling shaft 18 substantial axial align.
A cylindrical bosses 24a also is housed surrounds protruding 17a, perhaps the wheel hub of the arc that stretches out along the part of protruding 17a.The effect of wheel hub 24a is to distribute relative motion between depression 18a and protruding 17a, plays the effect of the cylindrical slideway 9aR that is used for meshing between them.
More specifically embodiment below will be described.
The modulus of the gear wheel 34 of the master unit 13 of device is 0.4-0.7.The root diameter of gear wheel 34 is approximately 30mm-150mm, and the number of teeth of gear wheel 34 is approximately 40-400.Concrete numeral can be by the space of professional in considering master unit 13, suitably selects during required image quality.Concrete numeral does not limit.In the present embodiment, the modulus of gear wheel 34 is 0.5, and root diameter is approximately 100, and the number of teeth is 200.
Handle box B is summarized as follows the location of (driving transmission) during imaging with respect to master unit 13.
The engagement location of handle box B box mounting portion by box framework and master unit 13 when being installed to master unit 13.In vertical direction, cylindrical slideway 9aL fits among the U-lag 15b reliably, makes it locate at this in the right directionly.On the other hand, wheel hub 24a is supported among the U-lag 15b in the receiver part simply.During imaging operation (driving transmission), the location of handle box B makes protruding 17a and depression 18a be engaged with each other and axial alignment.At this moment, wheel hub 24a leaves groove 15d.When the housing opened 35 of master unit was closed, cloudy coupling shaft 18 was shifted to positive coupling shaft 17.When 30 rotations of master unit motor, the protruding 17a and the 18a axial alignment ground between them that caves in mesh, and locate at an end of photosensitive drums 7 by U-lag 15d at axial handle box B, and locate at an other end by rotating the 18a that caves in.Consider the franchise of assembly, photosensitive drums 7 vertically is movably (approximately 0.1mm-1.0mm) at it.When photosensitive drums 7 was supported with vertically moving, it was with respect to removing axially determining as mentioned above of framework 12c.It is to consider that the tolerance of assembly is with respect to a flat board of master unit (mounting guide rail part 15a, moving 15c), and moving radially in photosensitive drums 7 that handle box B is installed to master unit.
During imaging operation, handle box B receives the revolving force of photosensitive drums 7 sense of rotation, thus the adjacent part 9j of handle box B with as plaing in the master unit 13 in abutting connection with fixture 26 adjacency that act on.
So, during the imaging operation on both direction vertically and radially handle box B correctly locate with respect to the master unit 13 of device.
(handle box is being located longitudinally)
Referring to Fig. 7,9,30 and 31, will describe a kind of structure, this structure when handle box B is installed to the master unit of device, can make handle box photosensitive drums 7 vertically further stably and accurately the location.
When handle box B is installed to the master unit 14 of imaging device, on the direction shown in Figure 30 arrow, move simultaneously and make it mobile, handle box B promotes to get the leaf spring 41 of the position shown in the dotted line to the position shown in the solid line, as shown in figure 30.
The U-lag 116b of leaf spring 41 and box mounting portion makes the compressing side plate in abutting connection with installing, for example, and the flange 29 (Figure 11) of the removing framework 12c of handle box B (it can be described as drum frame, because comprise photosensitive drums 7 at least).One end of leaf spring 41 is fixed to side 116e by Screw 41a, and this side makes L shaped spring action part support with cantilevered fashion from rail sections 116a continuous transition.
When handle box B was installed to the box mounting portion of master unit 14, leaf spring 41 had enough elastic force so that vertically moving handle box B.Spring force is above-mentionedly to connect within the above-mentioned scope to orthofunction (making it concentric) for axle allowing on the other hand.Make that by leaf spring 41 stopping handle box B makes handle box B location vertically moving, this is by following realization: (1) makes from the outwards outstanding cylindrical bosses 24a (Figure 11 of bearing 24 that support positive coupling shaft 17,16) be contiguous to parts of master unit 14, perhaps (2) install guide 116 by making side plate be contiguous to, this side plate for example is to remove framework 12c mounting flange 13aR1, and this side plate is in vertically the side with respect to the side plate of the removing framework 12c of adjacency leaf spring 41.In addition, the bottom surface 18a2 adjacency of the end face of protruding 17a2 and depression, perhaps the intake section adjacency of the end face 16c of drum flange and depression 18a.Hope is, parallel with photosensitive drums 7 and by leaf spring 41 to the point of crossing adjacency between another side plate of the straight line of the contact point of the side plate of removing framework 12c and removing framework 12c, guide 116 is installed is touched another side plate, because at this moment the power that is applied to handle box B by leaf spring 41 is not eccentric.Install guide 15 may with another side plate adjacency at gear wheel place.
As described below, respond the close operation of openable housing 35, after handle box B was installed to the box mounting portion of master unit 14, the side shaft web member of the box of device and master unit side shaft web member were engaged with each other.
According to present embodiment, leaf spring 41 compressings are as the removing framework 12c of the framework that supports photosensitive drums 7.Thereby, do not use other parts in order to locate, make that the precision of assembling of framework etc. is unaffected.The side plate of removing framework 12c is forced to and the support that is contained in handle box B, locatees the cylindrical slideway 13aL adjacency of a side relative with driving side.The bearing 24 of driving side is to raise from the U-lag 116d of driving side, and cylindrical slideway 13aL is supported on and is installed to a side U-lag 116b relative with driving side simultaneously, makes the axis of photosensitive drums 7 align.Because leaf spring 41 and cylindrical slideway 13aL are close to each other, it is influenced hardly at this moment to align operation being connected between handle box B and the master unit 14.
Fig. 7 and 31 expressions, one example wherein are that handle box B rather than master unit are equipped with spring 41.
In the present embodiment, leaf spring 41 is installed to the outside surface of removing framework 12C, in vertical and relative that side (non-drive side) of a side that positive connection bump 17a is installed of photosensitive drums.When handle box was installed to master unit 14, leaf spring 41 is location above guide rail 13aL basically.When handle box B was installed to master unit 14, it was inserting the direction compressing handle box B of protruding 17a to hole 18a.
So on cylindrical slideway 13aL, leaf spring 41 is fixed on the side plate of removing framework 12c by Screw 41a, for example flange 29.Leaf spring 41 stretches out a part from it by the fixing end of Screw 41a, this stretch out for L shaped and by with the side 116e elastic deformation of rail sections 116a adjacency.
Use such structure, when handle box B was installed to master unit 13, the side 116e adjacency that pressuring spring 41 and master unit guide rail 116 are adjacent made the axial compression of handle box B in photosensitive drums 7.
Thereby handle box B can vertically more stably locating in photosensitive drums 7 more accurately.
In the above-described embodiments, leaf spring 41 is configured in a side relative with driving side, make handle box B press to driving side, but this is dispensable.For example, leaf spring 41 is configurable at driving side, makes to force handle box B to leave driving side.Under this situation, the adjoining position between handle box B and the master unit 14 can be the removing framework 12c of handle box B and the part of master unit mounting guide rail part 116; The perhaps part of the end face of cylindrical slideway 13aL and master unit mounting guide rail part 116.
In the above-described embodiments, used leaf spring, but this not restriction.
According to present embodiment, spring part is installed in a longitudinal end branch of handle box, and this spring part pressurized contacts with the box mounting portion of the master unit of imaging device, thereby, the handle box pressurized also navigates to the wall surface of the 116c side of box mounting portion, makes the lengthwise position of handle box determine reliably.Thereby electric photosensitive drum is correctly determined with respect to the lengthwise position of handle box.Axle connects and automatically to be aligned or with one heart, so that correctly determine the center of electric photosensitive spare.
The lengthwise position of handle box can irrespectively be determined with the lengthwise position of spring.
When spring was leaf spring, the length of spring (highly) can be very little, makes it possible to save required space, spring part location.
By dispose spring part in the drum frame that is used for supporting electric photosensitive drum, the assembly precision of handle box is unaffected.
This superior effect can realize in having the electrical photographic imaging device of spring part that also this spring part forces handle box to be in a side wall surface of handle box mounting portion.
Spring part in the master unit of electrical photographic imaging device can be configured in driving side or non-drive side, and the axial location of electric photosensitive drum part can correctly be located under any situation.
If the spring part in the master unit is a leaf spring, be configurable spring part then without any need for the space of significantly putting spring.
(other embodiment)
In the foregoing description 1, the protruding 17a of positive coupling shaft 17 and the depression 18a of cloudy coupling shaft 18 are the equilateral triangle prism basically, but configuration is not limited thereto.For example, in the additional embodiments, depression 18a can have the polygonal cross-section on odd number limit, and protruding 17a can be circumference with the distortion of side such as similar number (such as a rounding triangle on summit), projection 17a can have prismatic sideline, part between the sideline is for entad caving in, and for example the cross section is the circle that groove is arranged.
In the above-described embodiments, the configuration of the protruding 17a of positive coupling shaft 17 and the depression 18a of cloudy coupling shaft 18 can be such, promptly just they one of be the regular prism configuration of distortion, and another is not.
In the above-described embodiments, drum flange 16 is each other in holistic with positive coupling shaft 17, and still positive coupling shaft 17 can separately be made, and drum flange 16 is installed then.
The example of protruding 17a below will be described.
Among Figure 25, be the termination that the protruding 17a of leg-of-mutton pyramid is installed to sun axle 17 substantially.Under this situation, when the transmission driving force base portion of projection 17a can with the angle part adjacency of the inlet in hole because the inlet of depression 18a is leg-of-mutton substantially.Projection 17a does not contact with the inclined surface of depression 18a.
In Figure 26, the protruding 17a that shape is the triangle pyramid substantially is equipped with in sun axle 17 terminations, and this pyramid has leg-of-mutton pyramid termination 17a7.In this example, triangular prism 17a8 part contacts with the inlet angle of depression 18a.The triangular ridges wimble fraction does not contact with the inclined surface of depression 18a.
Among Figure 27, the protruding 17a prism that is generally triangular, the stupefied line in limit is by rounding.Referring to Figure 28, the protruding 17a and cloudy another example that is connected the depression 18a of depression axle 18 of positive coupling shaft 17 will be described below.
In the present embodiment, protruding 17a is shaped as non-distortion rectangular prism, and will with the rectangular prism (Figure 28) of protruding 17a engagement recess 18a for distortion.The direction of twist of depression 18a is with opposite to the sense of rotation of the outside of master unit 13 from photosensitive drums 7.When the revolving force of 18a of caving in after protruding 17a on being contained in master unit 13 and the depression 18a engagement was transferred to protruding 17a, protruding 17a base portion contacted with the inlet angle of the 18a that caves in, made driving force transmission stably.
In the present embodiment, protruding 17a is a rectangular prism, and depression 18a is the rectangular opening of distortion, but this not necessarily, can use other prismatic configuration.In the above-described embodiments, the direction of depression 18a distortion is opposite to the sense of rotation of depth gear with inlet from the hole.
The twist angle in hole (projection) every axial length 1mm on sense of rotation is 1 °-15 °.
In the present embodiment, the degree of depth in hole is approximately 4mm, and twist angle is approximately 30 °.
In the foregoing description, protruding 17a is non-warping, thereby when driving force during from cloudy axle 18 transmissions, protruding 17a contacts with the inlet of hole 18a.Projection 17a not with the inclined surface adjacency in hole 18.By the engagement between protruding 17a of non-distortion and the distortion hole 18a, hole 18a is rotated.Then, the base portion of protruding 17a contacts with the intake section of hole 18a, and its position with respect to hole 18 is determined thus.This base portion has higher intensity than other parts, thereby protruding 17a can not be out of shape.The slight local deformation in bight of the bight of projection 17a and/or the inlet of hole 18a, and eat the into inside surface in hole.Thereby the connection between depression and the hole is more firm.When they are when being made by plastic resin material, this advantage is tangible.
Can understand from above, projection can be located on the master unit, and the hole can be located on the handle box.
As mentioned above, according to the present invention, driving force is transmission stably.
In the present embodiment, handle box B describes as forming the monochrome image handle box, but the present invention can have desirable effect be applicable to comprise a plurality of developing devices that can form the image that constitutes by multiple colour handle box (for example, two toner images, three toner images, full-color image or the like).
Electricity photosensitive spare does not need to be restricted to photosensitive drums 7.In for example following type is also included within.At first,, comprise such as amorphous silicon for photosensitive material, amorphous selenium, zinc paste, titanium dioxide, organic photoconductor, or the like photosensitive material.For the configuration of the substrate of placing photosensitive material thereon, can be cydariform or band shape.For example the cydariform sensitive piece comprises the right cylinder that is formed by aluminium alloy etc., deposition or coating optical body layer on this right cylinder.
As for method of development, can use known the whole bag of tricks; For example, two groups of magnetic brush type method of development, classification type method of development, (touck-down) method of development that descends, cloud and mist method of development or the like.
Again in the present embodiment, use so-called contact-type charging method, but can use the charging device that is different from structure described in the present embodiment significantly; For example, one of common structure, wherein tungsten filament is enclosed by formed metal shell three bread such as aluminium, and high voltage produces positive ion or negative ion is sent to photosensitive drum surface by applying to tungsten filament, and photosensitive drum surface is charged equably.
Except roll forming, charging device can be blade shaped (a charging blade), plate shape, and piece shape, bar shaped, linear or the like.
Remain in the method for the toner on the photosensitive drums as for removing, can use scraper plate, the fur brush, magnetic brush, or the like as the component parts of scavenge unit.
As mentioned above, according to the present invention, driving force can be reliably be transferred to electric photosensitive drum from the master unit of electrical photographic imaging device.
As mentioned above, according to the present invention, when handle box was installed to the master unit of device, handle box can be in the vertically more stable more accurately location of photosensitive drums.
Though the present invention is illustrated with reference to the structure revealed here, be not limited to the details that proposed, and the present patent application be want letter to cover may be for the modification or the distortion of improved purpose or following claim scope.
Claims (4)
1. an electric photographic image forming device is used for forming an image on a kind of recording materials, can a handle box be installed in removable mode on this electric photograph imaging equipment, and described equipment comprises:
(a) motor (30);
(b) pivotable drive parts (34) are used for receiving the driving force from described motor (30);
(c) distortion hole (18a), it is coaxial substantially with described pivotable drive parts (34);
(d) installing component (116L 116R), is used in removable mode a handle box being installed, and described handle box comprises:
An electric photosensitive drum (7);
Can act on treating apparatus on the described photosensitive drums (7) (8,9c, 10a); And
The lug boss of a non-distortion (17a), this lug boss (17a) has a plurality of engageable parts (17a1) that can be meshed with the inside surface in described distortion hole (18a), described lug boss (17a) is set at of described photosensitive drums (7) and vertically holds and have a non-circular xsect, wherein when described pivotable drive parts (34) rotated under described hole (18a) and state that engageable part (17a1) is meshed, rotating drive power was delivered to described photosensitive drums (7) by the engagement between described hole (18a) and the described engageable part (17a1) from described pivotable drive parts (34);
Described equipment further comprises:
(e) spring (41), be used for such longitudinal direction along described photosensitive drums (7) to the described handle box application of force, promptly, make described engageable part (17a1) and described hole (18a) be engaged with each other, with definite described photosensitive drums (7) position with respect to master unit (14) on described longitudinal direction, and
(f) present parts (3) for one, be used to present these recording materials,
Wherein this handle box further comprises a box framework, this box framework has a circular outer wall (24a) of the periphery in the described hole (18a) that partly or entirely surrounds described handle box, and described master unit comprises a recessed part (116d), and this recessed part (116d) is used for receiving described outer wall (24a) when described handle box is installed on the described master unit.
2. according to the equipment of claim 1, the described engageable part (17a1) or the hole of wherein said photosensitive drums (7) have such size and structure, be that it can get one first relative angle position and get one second relative angle position with respect to the described engageable part (17a1) of described pivotable drive parts with respect to the described hole (18a) or the lug boss of described pivotable drive parts (34), wherein the relative rotation motion of driving system between this described hole, first relative angle position and described lug boss obtains allowing, and the relative rotation motion of driving system along a rotation direction is prevented between this described hole, second relative angle position and described lug boss, and the rotation axis of described pivotable drive parts (34) is aimed at substantially with the rotation axis of described photosensitive drums (7).
3. an electric photographic image forming device is used for forming an image on a kind of recording materials, can a handle box be installed in removable mode on this electric photograph imaging equipment, and described equipment comprises:
(a) motor (30);
(b) pivotable drive parts (34) are used for receiving the driving force from described motor (30);
(c) lug boss of a non-distortion, it is coaxial substantially and have the xsect of a non-circle with described pivotable drive parts (34), and wherein said lug boss has a plurality of engageable parts (17a1);
(d) installing component (116L 116R), is used in removable mode a handle box being installed, and described handle box comprises:
An electric photosensitive drum (7);
Can act on treating apparatus on the described photosensitive drums (7) (8,9c, 10a); And
A distortion hole (18a) that can be meshed with described engageable part, described hole is set on the vertical end of described photosensitive drums (7), wherein when described pivotable drive parts (34) rotated under described engageable part and situation that the inside surface in described hole is meshed, rotating drive power was passed to described photosensitive drums (7) from described pivotable drive parts (34) by the engagement between described hole and the described engageable part;
Described equipment further comprises:
(e) spring (41), be used for such longitudinal direction along described photosensitive drums (7) to the described handle box application of force, promptly, make described engageable part (17a1) and described hole (18a) be engaged with each other, to determine described photosensitive drums (7) position with respect to master unit (14) on described longitudinal direction; And
(f) present parts (3) for one, be used to present these recording materials,
Wherein this handle box further comprises a box framework, this box framework has a circular outer wall (24a) of a periphery of the described lug boss that partly or entirely surrounds described handle box, and described master unit comprises a recessed part (116d), and this recessed part (116d) is used for receiving described outer wall (24a) when described handle box is installed on the described master unit.
4. according to the equipment of claim 3, the described engageable part (17a1) or the described hole of wherein said photosensitive drums (7) have such size and structure, be that it can get one first relative angle position and get one second relative angle position with respect to the described hole (18a) or the engageable part (17a 1) of described pivotable drive parts with respect to the described hole (18a) of described pivotable drive parts (34), wherein the relative rotation motion of driving system between this described hole, first relative angle position and described lug boss obtains allowing, and the relative rotation motion of driving system along a rotation direction is prevented between this described hole, second relative angle position and described lug boss, and the rotation axis of described pivotable drive parts (34) is aimed at substantially with the rotation axis of described photosensitive drums (7).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27752496 | 1996-09-26 | ||
| JP277524/1996 | 1996-09-26 | ||
| JP279616/1997 | 1997-09-25 |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN971196710A Division CN1217241C (en) | 1996-09-26 | 1997-09-26 | Process cartridge and electrophotographic image forming apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1725129A CN1725129A (en) | 2006-01-25 |
| CN100428083C true CN100428083C (en) | 2008-10-22 |
Family
ID=35924633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100833800A Expired - Fee Related CN100428083C (en) | 1996-09-26 | 1997-09-26 | Process cartridge and electrophotographic image forming apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100428083C (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0098777A2 (en) * | 1982-07-01 | 1984-01-18 | The Bendix Corporation | Coupling arrangement for driving and driven members |
| US4829335A (en) * | 1986-06-24 | 1989-05-09 | Canon Kabushiki Kaisha | Process cartridge and image forming apparatus using same |
| US5023660A (en) * | 1985-09-17 | 1991-06-11 | Canon Kabushiki Kaisha | Image bearing member and driving mechanism therefor |
| JPH03256058A (en) * | 1990-03-07 | 1991-11-14 | Ricoh Co Ltd | Electrophotographic copying device |
| EP0520802A2 (en) * | 1991-06-28 | 1992-12-30 | Canon Kabushiki Kaisha | Process cartridge and image forming apparatus usable with this process cartridge |
| JPH0792884A (en) * | 1993-09-28 | 1995-04-07 | Sanyo Electric Co Ltd | Drum cartridge type image forming device |
| EP0679963A2 (en) * | 1994-04-26 | 1995-11-02 | Canon Kabushiki Kaisha | Process cartridge and image forming apparatus |
| JPH08185108A (en) * | 1994-12-28 | 1996-07-16 | Canon Inc | Process cartridge and image forming device |
| EP0797125A1 (en) * | 1996-03-21 | 1997-09-24 | Canon Kabushiki Kaisha | Process cartridge and electrophotographic image forming apparatus |
| CN1217241C (en) * | 1996-09-26 | 2005-08-31 | 佳能株式会社 | Process cartridge and electrophotographic image forming apparatus |
-
1997
- 1997-09-26 CN CNB2005100833800A patent/CN100428083C/en not_active Expired - Fee Related
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0098777A2 (en) * | 1982-07-01 | 1984-01-18 | The Bendix Corporation | Coupling arrangement for driving and driven members |
| US5023660A (en) * | 1985-09-17 | 1991-06-11 | Canon Kabushiki Kaisha | Image bearing member and driving mechanism therefor |
| US4829335A (en) * | 1986-06-24 | 1989-05-09 | Canon Kabushiki Kaisha | Process cartridge and image forming apparatus using same |
| JPH03256058A (en) * | 1990-03-07 | 1991-11-14 | Ricoh Co Ltd | Electrophotographic copying device |
| EP0520802A2 (en) * | 1991-06-28 | 1992-12-30 | Canon Kabushiki Kaisha | Process cartridge and image forming apparatus usable with this process cartridge |
| JPH0792884A (en) * | 1993-09-28 | 1995-04-07 | Sanyo Electric Co Ltd | Drum cartridge type image forming device |
| EP0679963A2 (en) * | 1994-04-26 | 1995-11-02 | Canon Kabushiki Kaisha | Process cartridge and image forming apparatus |
| JPH08185108A (en) * | 1994-12-28 | 1996-07-16 | Canon Inc | Process cartridge and image forming device |
| EP0797125A1 (en) * | 1996-03-21 | 1997-09-24 | Canon Kabushiki Kaisha | Process cartridge and electrophotographic image forming apparatus |
| CN1217241C (en) * | 1996-09-26 | 2005-08-31 | 佳能株式会社 | Process cartridge and electrophotographic image forming apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1725129A (en) | 2006-01-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1217241C (en) | Process cartridge and electrophotographic image forming apparatus | |
| CN1122191C (en) | Process box and electrographic imaging device | |
| EP0833214B1 (en) | Process cartridge and electrophotographic image forming apparatus | |
| EP0833213B1 (en) | Process cartridge and electrophotographic image forming apparatus | |
| DE69732809T2 (en) | Coupling part, photosensitive drum, working unit and electrophotographic image forming apparatus | |
| US7715756B2 (en) | Image forming apparatus with linear movement member | |
| EP2283398B1 (en) | Cartridge and method for assembling cartridge | |
| RU2624397C2 (en) | Process cartridge, electrophotographic image forming device and electrophotographic photosensitive drum unit | |
| US6501927B1 (en) | Process cartridge and photosensitive drum driving mount | |
| US6163665A (en) | Process cartridge electrophotographic image forming apparatus and positioning there between | |
| DE69721392T2 (en) | Process cartridge and electrophotographic imaging device | |
| CN1677261B (en) | Electro-photographic light-sensitive drum, processing box and electro-photographic imaging apparatus | |
| EP0735432A1 (en) | Process cartridge with driving force transmission | |
| CN1254109A (en) | Cartridge processing and electrographic imaging equipment | |
| CN1165324A (en) | Process cartridge, assembling method for process cartridge and electrophotographic image forming apparatus | |
| CN2927122Y (en) | Image forming apparatus and box | |
| CN1316321C (en) | Developing apparatus and power supply part for applying developing bias | |
| RU2467369C2 (en) | Rotary force transmitting component | |
| CN100428083C (en) | Process cartridge and electrophotographic image forming apparatus | |
| AU726711B2 (en) | Process cartridge, electrophotographic image forming apparatus, driving force transmission part and electrophotographic photosensitive drum | |
| AU738535B2 (en) | Process cartridge, electrophotographic image forming apparatus driving force transmission part and electrophotographic photosensitive drum |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081022 Termination date: 20160926 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |