CN104471489B - Delevoping cartridge - Google Patents

Abstract

Delevoping cartridge (19) includes: the developing frame (25) with the first side wall (47)；It is configured at the developing gear (77) and gear mechanism (78) of the lateral surface of the first side wall (47)；Cover at least part of collar tube sub-assembly (72) of the circumferential surface of developing gear (77)；And support the gear stand (73) of gear mechanism (78) together with the first side wall (47).Collar tube sub-assembly (72) is formed by the sliding property material better than gear stand (73).Also, collar tube sub-assembly (72) and gear stand (73) are respectively arranged at positioning region (60) the common land positioning of the first side wall (47).

Description

Delevoping cartridge

Technical field

The present invention relates to a kind of Delevoping cartridges for being installed on the image forming apparatus using electrofax mode.

Background technique

All the time, there is known the printers for the electrofax mode for being detachably equipped with Delevoping cartridge.Delevoping cartridge tool It is standby: development framework；It is supported in the various rollers such as the intracorporal developer roll of the developing frame；Gear structure is set to the side wall of development framework Lateral surface, and for rotating various rollers；And gear cap, the side wall one from outer side covering gear mechanism, with development framework Play support gear mechanism.

As this Delevoping cartridge, for example, proposing a kind of Delevoping cartridge, which has: developing roller shaft, can be revolved It is supported in the side wall of development framework with turning, and its end protrudes outward from gear cap；And collar tube sub-assembly, it covers from gear Cover the end of developing roller shaft outstanding (for example, referring to patent document 1).

Also, in this Delevoping cartridge, driving force is transmitted from gear mechanism to the end of developing roller shaft, thus developer roll quilt Rotation driving.

Existing technical literature

Patent document:

Patent document 1: Japanese Unexamined Patent Publication 2011-133763 bulletin

Summary of the invention

Subject to be solved by the invention

Also, in the Delevoping cartridge documented by patent document 1, collar tube sub-assembly and gear cap are respectively positioned at development framework Different parts on side wall.Accordingly, there exist the ends of the developing roller shaft of sleeve component covering and the tooth supported by gear cap The case where positioning precision of wheel mechanism is not realized sufficiently and is unable to ensure the stable rotation driving of developer roll.

In addition, in the Delevoping cartridge documented by patent document 1, since collar tube sub-assembly and gear cap are respectively positioned at developing frame Different parts on the side wall of body, it is therefore desirable to ensure on the side wall of development framework for by collar tube sub-assembly and gear cap this The space of both sides' positioning, therefore there are limits for the miniaturization of realization Delevoping cartridge.

Therefore, the purpose of the present invention is to provide a kind of Delevoping cartridge, it can be realized the opposite of rotary part and driving mechanism The raising of positioning accuracy, and can be realized miniaturization.

A technical solution to solve project

(1) to achieve the goals above, Delevoping cartridge of the invention includes: framework, has the first wall；Developer carrier master Body is configured to bearing developer, and is configured to centered on first axle rotate relative to the framework, relative to described the One wall is configured at first axle direction side i.e. first direction side；Rotary part, be configured to the first axle be The heart is integrally rotated with the developer carrying phosphor bodies, and at least part of the rotary part is matched relative to first wall It is placed in the opposite side i.e. second direction side of the first direction side；Driving mechanism has and drives for transmitting to the rotary part At least one rotary body of power is configured at the second direction side relative to first wall；Collar tube sub-assembly covers the rotation At least part of the circumferential surface of rotation member is configured at the second direction side relative to first wall；And bracket, and it is described Collar tube sub-assembly split settings support together with first wall relative to the actuator configuration in the second direction side The driving mechanism.

Described sleeve pipe component is formed by the sliding property material better than the bracket.

First wall, which has constituted in a manner of positioning described sleeve pipe component and the bracket respectively shared, to be determined Position portion.

According to this structure, collar tube sub-assembly and bracket distinguish shared positioning region positioning, thus with collar tube sub-assembly and branch Frame is respectively positioned in the case where different parts on side wall and compares, and can be realized the positioning precision of collar tube sub-assembly and bracket Further increase, and can reduce for by collar tube sub-assembly and bracket positioning space.

Therefore, it can be realized further increasing for the positioning precision of rotary part and driving mechanism, and can be real The miniaturization of existing Delevoping cartridge.

In addition, collar tube sub-assembly covers the rotary part for being configured to rotation, therefore exists and connect with rotary part The case where touching simultaneously sliding friction.

About this point, collar tube sub-assembly is formed by the sliding property material better than bracket, therefore even if in collar tube sub-assembly and rotation In the case where rotation member contact and sliding friction, it is also able to suppress the abrasion of collar tube sub-assembly, and can ensure that rotary part is suitable Freely rotate.In addition, due to collar tube sub-assembly and bracket split settings, the material that can only make collar tube sub-assembly good by sliding property It is formed, can be realized the reduction of material cost.

Therefore, Delevoping cartridge according to the present invention can be realized mentioning for the positioning precision of rotary part and driving mechanism Height, and can be realized the miniaturization of Delevoping cartridge, and then be able to suppress the abrasion of collar tube sub-assembly, and can ensure rotary part It swimmingly rotates, and can be realized the reduction of material cost.

(2) alternatively, it is also possible to be, positioning region is prominent from the first wall to second direction side.

According to this structure, positioning region is prominent from the first wall to second direction side, therefore can will match relative to the first wall The collar tube sub-assembly and bracket for being placed in second direction side are effectively positioned at shared positioning region.

(3) alternatively, it is also possible to being that at least part of collar tube sub-assembly configures on first axle direction in the first wall and branch Between frame.

Also, from the viewpoint of improving the precision that image is formed, preferably raising developer carrying phosphor bodies are relative to frame The positioning accuracy of body.

But in the case where applying impact to collar tube sub-assembly from outside, which can act on the covering of sleeve component Rotary part, and then developer carrying phosphor bodies can be sometimes acted on via rotary part.So, there are developers Carry the case where phosphor bodies are reduced relative to the positioning accuracy of framework.

In this regard, according to above structure, at least part of collar tube sub-assembly configure on first axle direction in the first wall and Between bracket, therefore at least part of collar tube sub-assembly is covered by bracket from second direction side.

Therefore, it is impacted even if applying from second direction side to Delevoping cartridge, also impact can be inhibited to be applied to set by bracket Pipe portion part.

As a result, being able to suppress the case where developer carrying phosphor bodies are reduced relative to the positioning accuracy of framework.

In addition, being also able to suppress since the case where impact is applied to collar tube sub-assembly is suppressed than bracket price Collar tube sub-assembly is damaged.

(4) alternatively, it is also possible to be, the first wall is also equipped with shared fixed part in second direction side, the fixed part relative to Rotary part is set to the opposite side of positioning region, and collar tube sub-assembly and bracket are fixed respectively.

According to this structure, shared fixed part is fixed respectively for collar tube sub-assembly and bracket, thus with collar tube sub-assembly and branch The case where frame is individually fixed in the first wall and collar tube sub-assembly and bracket are individually fixed in the different parts on side wall is compared, energy It is enough to reduce for the space that collar tube sub-assembly and bracket is fixed.

Also, since collar tube sub-assembly and bracket are individually fixed in the first wall, the rotary part of sleeve component covering And the first wall is respectively relative to by the driving mechanism that bracket supports together with the first wall and is accurately positioned.

Especially, rotary part is configured between positioning region and fixed part, the covering of at least part sleeve component, because This can more accurately be positioned relative to the first wall.

(5) alternatively, it is also possible to be, positioning region, fixed part and rotary part are respectively configured in rotary part Mandrel and on the radially extending straight line of rotation.

According to this structure, positioning region is configured at the radial side of the rotation of rotary part relative to rotary part, fixed Portion is configured at the radial other side, therefore even if collar tube sub-assembly is contacted with rotary part and sliding friction, is also able to suppress cannula portion Part loosens.

Therefore, it can be realized raising of the collar tube sub-assembly relative to the positioning accuracy of the first wall, and then can be realized rotating part Raising of the part relative to the positioning accuracy of the first wall.

(6) alternatively, it is also possible to be, collar tube sub-assembly has the second direction side end face from second direction side covering rotary part The first covering part.

According to this structure, the first covering part of collar tube sub-assembly covers the second direction side of rotary part from second direction side End face, therefore the first covering part is opposite with the second direction side end face of rotary part from second direction side.

Therefore, movement of the rotary part to second direction side is limited, so as to realize rotary part relative to framework Positioning accuracy raising.

(7) alternatively, it is also possible to be, collar tube sub-assembly has the second covering part, and second covering part and the first covering part are continuous, It is opposite with the first wall from second direction side, and it is fixed on fixed part.

In this case, bracket at least covers the second covering part from second direction side.

According to this structure, the second covering part for being fixed on fixed part is covered from second direction side by bracket, Therefore, it is impacted even if applying from second direction side to Delevoping cartridge, also impact can be inhibited to be applied to the second covering part by bracket.

Therefore, even if impact is applied to Delevoping cartridge from second direction side, the second covering part is also able to suppress relative to first The reduction of the positioning accuracy of side wall, and then it is able to suppress reduction of the collar tube sub-assembly relative to the positioning accuracy of the first side wall.

(8) alternatively, it is also possible to be, bracket is fixed by screw component respectively in positioning region and fixed part.

In this case, screwed part is individually fixed in positioning region and fixed part via bracket and the second covering part.

According to this structure, the second covering part is covered by bracket from second direction side, and screwed part is via bracket and second Covering part and be individually fixed in positioning region and fixed part, therefore bracket Jie be located between screwed part and the second covering part.

Therefore, by the bracket being located between screwed part and the second covering part that is situated between, it is able to suppress screwed part difference spiral shell Torque when together in positioning region and fixed part is in the second covering part.

As a result, it is able to suppress collar tube sub-assembly loosening when screwed part to be screwed together in positioning region and fixed part respectively, So as to realize raising of the collar tube sub-assembly relative to the positioning accuracy of the first wall.

(9) alternatively, it is also possible to be, rotary part is to be configured at second direction side relative to the first wall and be configured to come from The developing gear that the driving force of driving mechanism is transmitted to developer carrying phosphor bodies.

In this case, the second direction side end of collar tube sub-assembly covering developing gear.

According to this structure, it is not only simple in structure and rotary part is developing gear, therefore developing gear can be effectively Receiving carrys out the driving force of self-driven mechanism.

Therefore, can future self-driven mechanism driving force be transmitted to developer carrying phosphor bodies, developer can be made to hold Carrier element is stably rotated driving.

(10) alternatively, it is also possible to being, further includes: developer replenishing phosphor bodies are configured to supply to developer carrying phosphor bodies To developer, and it is configured to centered on second axis rotate relative to framework, is configured at first direction side relative to the first wall； And supply gear, it is configured to centered on second axis integrally rotate with developer replenishing phosphor bodies, relative to the first wall It is configured at second direction side.

In this case, at least one rotary body is to be configured to rotate relative to framework and for bearing from outer The shaft coupling gear of the driving force in portion, shaft coupling gear are configured to respectively to supply gear and developing gear transmitting driving force.

In addition, the distance between rotation axis and first axle of shaft coupling gear are between rotation axis and second axis Distance be roughly the same length.

According to this structure, Delevoping cartridge further includes developer replenishing phosphor bodies, therefore can be effectively by developer replenishing To developer carrying phosphor bodies.

In addition, due to the distance between the rotation axis of shaft coupling gear and rotation axis, that is, first axle of developing gear The distance between rotation axis, that is, second axis of the rotation axis of shaft coupling gear and supply gear is roughly the same length Degree, thus can balance well will enter into shaft coupling gear from external driving force be transmitted to respectively developing gear and Supply gear.

As a result, developer carrying phosphor bodies and developer replenishing phosphor bodies can be made to be stably rotated driving respectively.

(11) alternatively, it is also possible to be, rotary part is along the extension of first axle direction and second direction side end is matched It is placed in the rotary shaft that second direction side is leaned on than the first wall.

In this case, the second direction side end of collar tube sub-assembly covering rotary shaft.

According to this structure, it is not only simple in structure and rotary part is the rotary shaft extended along first axle direction, because Developer carrying phosphor bodies and rotary shaft can be configured to effectively rotate centered on first axle by this.

Therefore, developer carrier Soil stability can be made driving is rotated.

Invention effect

In accordance with the invention it is possible to realize the raising of the positioning precision of rotary part and driving mechanism, and can be real Now minimize.

Detailed description of the invention

Fig. 1 is the sectional view for indicating an embodiment of printer.

Fig. 2 is the perspective view of the first embodiment of Delevoping cartridge of the invention from upper left side.

Fig. 3 is the exploded perspective view of the driving unit shown in Fig. 2 from upper left side.

Fig. 4 (a) is the left side view of Delevoping cartridge shown in Fig. 2, and Fig. 4 (b) indicates the IVb- of Delevoping cartridge shown in Fig. 4 (a) The left part of IVb cross-sectional view.

Fig. 5 is the left side view of Delevoping cartridge shown in Fig. 4 (a), shows the state for unloading gear stand.

Fig. 6 is the left side view of Delevoping cartridge shown in fig. 5, shows the state for unloading collar tube sub-assembly.

Fig. 7 (a) is the top view of Delevoping cartridge shown in Fig. 2, and Fig. 7 (b) indicates the VIIb- of Delevoping cartridge shown in Fig. 7 (a) VIIb cross-sectional view.

Fig. 8 is to indicate the left part of Delevoping cartridge from the perspective view of preceding left sides Delevoping cartridge shown in Fig. 2.

Fig. 9 is the exploded perspective of the driving unit from the second embodiment of Delevoping cartridge of the invention from upper left side Figure.

Specific embodiment

1. the overall structure of printer

As shown in Figure 1, printer 1 has the main body cover 2 of substantially box shape.

Moreover, printer 1 has sheet feed section 3 for supplying paper S in shell 2 and outside the main body for being supplied The image forming part 4 of paper S formation image.

In addition, in the case where mentioning direction to printer 1 and Delevoping cartridge 19 (aftermentioned), respectively to load in the horizontal direction When direction on the basis of, specifically, on the basis of the arrow direction shown in each figure.

(1): main body cover

Shell 2 is formed with the box opening portion 5 for loading and unloading handle box 15 (aftermentioned) and the paper for importing paper S outside the main body Open oral area 6.

The upper end of the shell 2 outside the main body of box opening portion 5 is formed through along the vertical direction.

The lower end of the front end of shell 2 outside the main body of paper opening portion 6 is formed through along the longitudinal direction.

Moreover, the upper end of shell 2 is provided with overhead guard 7 outside the main body, it is provided in its front end for paper cap 8.

Overhead guard 7 is configured to open using end thereafter as fulcrum in the detent position of closing box opening portion 5 and unlimited box The open position of oral area 5 swings (movement) (double dot dash line shown in referring to Fig.1).

For paper cap 8 be configured to using its lower end as fulcrum to closing paper opening portion 6 first position and open wide The second position of paper opening portion 6 swings (movement) (double dot dash line shown in referring to Fig.1).

(2) sheet feed section

Sheet feed section 3 has the paper mounting portion 9 for the bottom for being set to main body cover 2.

Paper mounting portion 9 is connected to via paper opening portion 6 with the external of main body cover 2.

Also, in the state of being configured at the second position for paper cap 8, the front part of paper S is stacked on for the upper of paper cap 8 Surface and thereafter side section are stacked in paper mounting portion 9 across paper opening portion 6.

Moreover, sheet feed section 3 has: pick-up roller 11 configures on the upside of the rear end of paper mounting portion 9；Paper feed roller 12, It is configured at the rear side of pick-up roller 11；For paper washer 13, it is arranged opposite at the rear side for paper cap 12；And paper supply access 14, Continuously extend upwards from the rear end for paper washer 13.

(3) image forming part

Image forming part 4 has handle box 15, scanning element 16 and fixation unit 17.

(3-1): handle box

Handle box 15 is configured to load and unload relative to main body cover 2, installs in the upside of the rear section of sheet feed section 3 In main body cover 2.

Handle box 15 has: drum box 18, consisting of can load and unload relative to main body cover 2；And Delevoping cartridge 19, structure As can be loaded and unloaded relative to the drum box 18.

Drum box 18 has photosensitive drums 20, transfer roll 21 and has grid net corona type (ス U ロ ト ロ Application type) charged device 22.

Photosensitive drums 20 are formed as the substantially cylindrical shape that length is long in the lateral direction, and can be rotatably provided in drum The rear section of box 18.

Transfer roll 21 is formed as the cylindrical shape that length is long in the lateral direction, is crimped on photosensitive drums 20 from rear side and presses It connects.

Specifically, transfer roll 21 by its axis center be located at than photosensitive drums 20 axis center slightly by downside in a manner of be configured at The rear side of photosensitive drums 20.In addition, the lower ora terminalis of transfer roll 21 be configured to it is more upper than the lower ora terminalis of photosensitive drums 20.Specifically, Connect the virtual line segment (not shown) of the axis center of transfer roll 21 and the axis center of photosensitive drums 20 with along the longitudinal direction horizontally It is about 3 ° that the virtual straight line (not shown) extended, which is formed by the angle of acute angle,.Therefore, transfer roll 21 presses photosensitive drums 20 The pressure (transfer pressure) connect is not by the effect of weight of transfer roll 21.

There is grid net corona type charged device 22 to be oppositely disposed at spaced intervals in the front upper side of photosensitive drums 20.

Specifically, there is grid net corona type charged device 22 relative to transfer roll 21 at circumferentially spaced of photosensitive drums 20 It configures, be configured to the virtual line segment (not shown) of the axis center of connection photosensitive drums 20 and the axis center of transfer roll 21 and connect every ground It is about that the virtual line segment (not shown) of the axis center and live line 23 (aftermentioned) that connect photosensitive drums 20, which is formed by the angle at angle, 120°。

Moreover, there is grid net corona type charged device 22 to have live line 23 and grid (グ リ ッ De) 24.

Live line 23 stretches setting in a manner of extending along left and right directions, and is arranged opposite at spaced intervals photosensitive The front upper side of drum 20.

Grid 24 is formed towards the open side view in front upper place substantially U-shaped, and is arranged to from rear side around band Electric wire 23.

Delevoping cartridge 19 is configured in the preceding downside of photosensitive drums 20, and has the developing frame 25 of an example as framework.

It is formed with toner accommodating chamber 26 and developing room 27 in tandem in developing frame 25.Toner accommodating chamber 26 It is substantially identical to each other to be formed as its volume with developing room 27, and is connected to by communication port 28.

Toner (an example of developer) is accommodated in toner accommodating chamber 26, up and down direction substantial middle part before and after it It is provided with blender 29.That is, blender 29 is arranged to than photosensitive drums 20 on the lower.

Blender 29 has: along the blender axis 49 of left and right directions extension and from blender axis 49 to blender axis 49 The stirring blade 50 that radial outside extends.

Also, blender 29 passes through the left and right ends by a pair of sidewalls 46 (aftermentioned, reference Fig. 5) support blender axis 49 Portion, so as to rotatably be supported on developing frame 25.

In developing room 27, it is viscous that supply roller slot 30, developer roll opposite face 31 and lower film are formed in the upper surface of its lower wall Veneer 32.

Supply roller slot 30 is along the substantially semi-circular shape of the circumferential surface of sponge roller 52 (aftermentioned), to be recessed towards the back lower place Mode formed.

Developer roll opposite face 31 is along the substantially circular shape of the circumferential surface of rubber rollers 54 (aftermentioned), with from supply roller slot The mode that 30 rear end continuously extends rearwardly and upwardly is formed.

Lower film adhesive surface 32 is formed in a manner of continuously rearward extending from the rear end of developer roll opposite face 31.That is, Lower film adhesive surface 32 is arranged to more upper than developer roll opposite face 31.

Moreover, lower film adhesive surface 32 is matched relatively at spaced intervals in above-below direction relative to the lower portion of photosensitive drums 20 It sets, when vertically projecting, is configured to be overlapped with the axis center of photosensitive drums 20.

Moreover, being provided with supply roller 33, developer roll 34, thickness limitation scraper 35 and lower film 36 in developing room 27.

Supply roller 33 has: metal supply roll shaft 51 extends along left and right directions；And 52 (developer of sponge roller Supply an example of phosphor bodies), supply roll shaft 51 is coated in a manner of exposing the left and right ends portion for supplying roll shaft 51.

Also, supply roller 33 is configured in the mode that its lower portion is configured in supply roller slot 30 in toner accommodating chamber 26 Rear side, in the up-down direction be located at the height roughly the same with toner accommodating chamber 26 (slightly leaned on than toner accommodating chamber 26 Upside).

Also, the details of supply roller 33 are aftermentioned, by make supply roll shaft 51 left and right ends portion by a pair of sidewalls 46 (after State) support (referring to Fig. 5), so as to be rotatably provided in the front part of developing room 27.

Developer roll 34 has: metal developing roller shaft 53 extends along left and right directions；And 54 (developer of rubber rollers Carry an example of phosphor bodies), developing roller shaft 53 is coated in a manner of exposing the left and right ends portion of developing roller shaft 53.

Also, developer roll 34 is configured to be separated from each other the circumferential surface of the lower portion of rubber rollers 54 and developer roll opposite face 31 Interval is opposite.

In addition, developer roll 34 is contacted from rear upside with supply roller 33.Moreover, developer roll 34 with its upside and rear section from The mode that developing room 27 exposes is arranged, and from preceding contacts-side-down supply roller 20.That is, after developer roll 34 is configured at supply roller 33 Upside, and it is configured at the preceding downside of photosensitive drums 20.Also, the axis center of supply roller 33 (supply roll shaft 51), developer roll 34 are (aobvious Shadow roll shaft 53) axis center and the axis centers of photosensitive drums 20 be located on radial parallel substantially same straight line with photosensitive drums 20.

In addition, developer roll 34 is relative to having grid net corona type charged device 22 in the circumferentially spaced compartment of terrain of photosensitive drums 20 Configuration is configured to the axis center of connection photosensitive drums 20 and line segment and the axis center and developer roll that connect photosensitive drums 20 of live line 23 The angle that the line segment of the axis center of 34 (developing roller shafts 53) is formed by angle is about 120 °.That is, developer roll 34, having grid net electric The roughly equal compartment of terrain configuration of circumferentially spaced of halo type charged device 22 and each comfortable photosensitive drums 20 of transfer roll 21.

Also, the details of developer roll 34 are aftermentioned, by make the left and right ends portion of developing roller shaft 53 by a pair of sidewalls 46 (after State) support (referring to Fig. 5), so as to be rotatably provided in the rear section of developing room 27.

The upper end of thickness limitation scraper 35 is fixed on the rear end of the upper wall of developing room 27, and lower end is from front side and shows Shadow roller 34 contacts.

The rear section of lower film 36 is fixed on lower film adhesive surface 32, and front end is in the top of developer roll opposite face 31 and aobvious All face contacts of shadow roller 34.

In addition, the center of gravity of this Delevoping cartridge 19 is set in its front and back and up and down direction substantial middle part, specifically, position In perspective plane when projecting aftermentioned development shaft coupling 85 (referring to Fig. 5) in the lateral direction.

(3-2) scanning element

Scanning element 16 is configured in the front side of handle box 15, and with opposite at spaced intervals in front-rear direction with photosensitive drums 20 Mode configure.

Scanning element 16 is based on image data towards 20 outgoing laser beam L (solid line referring to Fig.1) of photosensitive drums, makes photosensitive drums 20 Circumferential surface exposure.

Specifically, laser beam L is rearward projected from scanning element 16, exposes the circumferential surface of the front end of photosensitive drums 20. That is, the exposure point (circumferential surface of the front end of photosensitive drums 20) that photosensitive drums 20 expose is set to relative to the axis center of photosensitive drums 20 The opposite side of the coining point contacted with photosensitive drums 20 and transfer roll 21.

At this point, Delevoping cartridge 19 is configured to the injection track than laser beam L on the lower, there is grid net corona type charged device 22 to match The injection track being set to than laser beam L is upper.

In addition, the corresponding position setting between scanning element 16 and photosensitive drums 20 in the medial surface of shell 2 outside the main body There is the guide portion 37 guided to the handling of handle box 15.Also, when handle box 15 is separated from main body cover 2, handle box 15 are guided by guide portion 37, so that the Delevoping cartridge 19 for being installed on bulging box 18 passes through the injection rail of laser beam L from downside towards upside Mark.

At this point, being set to the various rollers (transfer roll 21, supply roller 33 and developer roll 34) of handle box 15 also from downside direction Upside passes through the injection track of laser beam L.

(3-3) fixation unit

The configuration of fixation unit 17 is in the upside of the rear section of drum box 18.Specifically, fixation unit 17, which has, is configured at There is the heating roller 38 of the top of grid net corona type charged device 22 and is crimped on the pressure roller 39 of heating roller 38 from rear upside.

That is, the configuration of heating roller 38 is attached in the upper end (unlimited side end) for the grid 24 for having grid net corona type charged device 22 Closely.

(4) image formation acts

The toner of the toner accommodating chamber 26 of Delevoping cartridge 19 is supplied by the rotation of blender 29 via communication port 28 To the sponge roller 52 of supply roller 33, and then the rubber rollers 54 of developer roll 34 are supplied to, led between supply roller 52 and developer roll 54 Cross the electricity that friction takes positive polarity.

The toner of rubber rollers 54 is supplied to the rotation of developer roll 34 and 35 limited thickness of scraper is limited by thickness, and The surface of rubber rollers 54 is carried on as certain thickness thin layer.

On the other hand, the surface of photosensitive drums 20 is and having grid net corona type charged device 22 after similarly being charged, It is exposed by scanning element 16.Electrostatic latent image based on view data is formed in the circumferential surface of photosensitive drums 20 as a result,.Then, The toner for being carried on rubber rollers 54 is supplied to electrostatic latent image on the circumferential surface of photosensitive drums 20, thus on the circumferential surface of photosensitive drums 20 It carries toner image (developer picture).

It is stacked in the paper S of paper mounting portion 9 and paper feed roller 12 is sent to by the rotation of pick-up roller 11 and for paper washer 13 Between, and one by one put in order by the rotation of paper feed roller 12.Hereafter, the paper S being organized passes through the rotation of paper feed roller 12 And it is transferred into paper supply access 14, image forming part 4 (photosensitive drums 20 (aftermentioned) and transfer are one by one supplied at the time of predetermined Between roller 21 (aftermentioned)).

Then, paper S is transmitted between photosensitive drums 20 and transfer roll 21 from downside to upside.At this point, toner image quilt It is transferred to paper S, to form image.

Then, paper S is heated and pressed when by between heating roller 38 and pressure roller 39.At this point, image is thermally fixed In paper S.

Hereafter, paper S is transmitted towards exit roller 40, and is discharged to by exit roller 40 and to be formed in the upper surface of top cover 7 On discharge tray 41.

Such paper S is transmitted in the drive access of side view substantially C-shaped in the following manner: from 9 paper supply of paper mounting portion, By (coining point) between photosensitive drums 20 and transfer roll 21, then after by between heating roller 38 and pressure roller 39, it is discharged to On discharge tray 41.

2. the detailed construction of Delevoping cartridge

As shown in Figures 2 and 3, Delevoping cartridge 19 has configuration in the left side (an example of second direction side) of developing frame 25 Driving unit 45.

In addition, the front-rear direction up and down about Delevoping cartridge 19 and the front-rear direction up and down about printer 1 are slightly different, show Shadow box 19 by its front side be printer 1 front upper side and rear side be printer 1 rear side in a manner of be mounted on printer 1.

(1) developing frame

As shown in figure 3, developing frame 25 is formed as the substantially box shape (referring to Fig.1) extended in left-right direction, have It is separated from each other and is spaced and opposite a pair of sidewalls 46 on left and right directions.

A pair of sidewalls 46 is each formed as the side view rectangular shape that vertically front and back extends.

In addition, a pair of sidewalls 46 has the second sidewall 48 of the first side wall 47 (an example of the first wall) and right side in left side.

The left side of the first side wall 47 be provided integrally with bracket holding section 58, intermediate gear support shaft 59 (referring to Fig. 5), Positioning region 60 and fixed part 61.

As shown in fig. 6, bracket holding section 58 is set to the front end of the left surface of the first side wall 47, as shown in figure 3, one Ground has base portion 68 and fitting portion 69.

Base portion 68 is formed as side view in substantially crosswise (referring to Fig. 6), and be formed as from the left-handed watch of the first side wall 47 towards Left is prominent.

The side view substantially crosswise (ginseng that fitting portion 69 is formed as its front and back and up and down direction length forms shorter than base portion 68 According to Fig. 6), and be formed as protruding to the left from the left part of base portion 68 in such a way that base portion 68 and central axis are consistent.

As shown in fig. 6, rear side of the intermediate gear support shaft 59 in bracket holding section 58 is set at spaced intervals along the longitudinal direction It sets, is formed as from the left surface of the first side wall 47 substantially cylindrical shape outstanding to the left (referring to Fig. 3).

Positioning region 60 is set to the lower end of the rear end in the left surface of the first side wall 47, as shown in figure 3, be formed as from The left surface of the first side wall 47 is towards left substantially cylindrical shape outstanding.In addition, positioning region 60 is provided integrally with base end part 62 With insertion portion 63.

Base end part 62 is the right part of positioning region 60, and is formed as outstanding to the left from the left surface of the first side wall 47 Substantially cylindrical shape.

Insertion portion 63 is the left part of positioning region 60, and is formed as substantially round smaller than the outer diameter of base end part 62 of its outer diameter Barrel shape, and be formed as protruding shape to the left from the left part of base end part 62 in such a way that central axis and base end part 62 are consistent At.As shown in Fig. 4 (b), the left and right directions length of insertion portion 63 is formed as being situated between with oriented side covering part 101 (aftermentioned) and first The roughly the same length of the summation of the left and right directions length (thickness) of portion 116 if (aftermentioned).

In addition, as shown in figure 3, the inner peripheral surface of positioning region 60 is divided into the first threaded hole 64.

Fixed part 61 is set to the rear end of the upper end of the first side wall 47, is provided integrally with extended portion 66 and protruding portion 67。

As shown in Fig. 4 (b), extended portion 66 is formed as outstanding towards top from the rear end of the upper end of the first side wall 47 Substantially writing board shape.

Protruding portion 67 is formed as from the left surface of extended portion 66 towards left substantially cylindrical shape outstanding, inner circumferential surface quilt It is divided into the second threaded hole 65.

In addition, as shown in fig. 6, the first side wall 47 has blender axis 49 in the rear side insert of intermediate gear support shaft 59 Left part, the front side insert in positioning region 60 have the left part of supply axis 51, and the front upper side insert in positioning region 60 has developer roll The left part of axis 53.As a result, as shown in figure 3, the left part (referring to Fig. 6) of blender axis 49, supply roll shaft 51 left part and The left part of developing roller shaft 53 is respectively since the first side wall 47 protrudes to the left.On the other hand, sponge roller 52 (referring to Fig.1) and rubber Roller 54 is respectively configured at right side (an example of first direction side) relative to the first side wall 47.

In addition, developing frame 25 held when its front end has and is detached from from drum box 18 (referring to Fig.1) two one or two Hold portion 55.

Handle part 55 is respectively arranged at the left and right ends portion of the antetheca of developing frame 25, is formed as rearview in rectangle, such as Shown in Fig. 4 (a), be formed as extending from the antetheca of developing frame 25 towards front upper place.

(2) driving unit

As shown in figure 3, driving unit 45 is set to the lateral surface (left side) of the first side wall 47, have: parts of bearings 70, The gear stand 73 of gear train 71, collar tube sub-assembly 72 and an example as bracket.

(2-1) parts of bearings

As shown in fig. 6, parts of bearings 70 is formed as the substantially writing board shape of side view in the form of a substantially rectangular, in its lower end Rear section is formed with the groove of the notch 74.

The groove of the notch 74 is arranged in correspondence with positioning region 60, is formed as being recessed from the lower ora terminalis of parts of bearings 70 towards front upper place Side view substantially U-shaped.The front-rear direction length and up and down direction length of the groove of the notch 74 are respectively formed as the base than positioning region 60 The outer path length of end 62.

In addition, parts of bearings 70 is provided integrally with shaft coupling support shaft 75 as shown in Fig. 7 (b).

Shaft coupling support shaft 75 is formed as the left side from parts of bearings 70 in the front upper side part of the left surface of parts of bearings 70 Surface substantially cylindrical shape outstanding to the left.

Also, as shown in figure 3, parts of bearings 70 is installed on the corresponding with developing room 27 (referring to Fig.1) of the first side wall 47 Partial left side.

In addition, as shown in fig. 6, parts of bearings 70 supports the left part for supplying roll shaft 51 as energy in the front side of the groove of the notch 74 Enough rotations support the left part of developing roller shaft 53 in the front upper side of the groove of the notch 74 as that can rotate.That is, a left side for supply roll shaft 51 End and the left part of developing roller shaft 53 respectively can be rotatably supported at the first side wall 47 via shared parts of bearings 70. In addition, as shown in figure 3, the right part of supply roll shaft 51 and the right part of developing roller shaft 53 can respectively be rotatably supported at second The corresponding part of side wall 48.

As a result, developer roll 34 (developing roller shaft 53 and rubber rollers 54) be configured to centered on first axle A1 relative to Developing frame 25 rotates, and supply roller 33 (supply roll shaft 51 and sponge roller 52) is configured to centered on second axis A2 opposite It is rotated in developing frame 25.

In addition, the left part of supply roll shaft 51 and the left part of developing roller shaft 53 are respectively since parts of bearings 70 is dashed forward to the left Out.

In addition, as shown in fig. 6, the left part of developing roller shaft 53 is configured at positioning on the radial X that developing roller shaft 53 rotates Between portion 60 and protruding portion 67, compartment of terrain is separated from each other with positioning region 60 and protruding portion 67 respectively and is configured side by side.That is, aobvious passing through Shadow roll shaft 53 (first axle A1) is simultaneously configured with positioning region 60 and protruding portion 67 along the straight line that direction X extends.

(2-2) gear train

As shown in figure 3, gear train 71 has the gear mechanism 78 of an example as driving mechanism and as rotary part The developing gear 77 of an example.

Gear mechanism 78 has at least one gear (an example of rotary body) for transmitting driving force to developing gear 77, Specifically, have the development shaft coupling 85 as an example of shaft coupling gear, supply gear 86, intermediate gear 87 and stirring Device gear 88 (referring to Fig. 6).

Development shaft coupling 85 is formed as the substantially cylindrical shape extended in the lateral direction, is provided integrally with large diameter gear portion 89, small-diameter gear portion 90 and shaft coupling portion 91.

Large diameter gear portion 89 is set to the right part of development shaft coupling 85.Circumferential surface in large diameter gear portion 89 spreads its complete cycle Form to range the gear teeth with teeth.

Small-diameter gear portion 90 is formed as its outer diameter substantially cylindrical shape smaller than the outer diameter in large diameter gear portion 89, and is formed as It is protruded to the left in such a way that central axis and large diameter gear portion 89 are consistent from the left side in large diameter gear portion 89.In small-diameter gear The circumferential surface in portion 90 forms the gear teeth with teeth throughout its complete cycle range.

Shaft coupling portion 91 is formed as generally cylindrical shaped smaller than the outer diameter in small-diameter gear portion 90 of its outer diameter, and be formed as with Central axis is protruded with the consistent mode in large diameter gear portion 89 from the left side in small-diameter gear portion 90 to the left.

The combination recess portion 94 being recessed to the right is formed in the left side in shaft coupling portion 91.Main body is installed in Delevoping cartridge 19 In the state of in shell 2 (referring to Fig.1), the front end for the main body shaft coupling (external an example, not shown) having in main body cover 2 It is inserted into a manner of being unable to relative rotation in conjunction with recess portion 94, driving force is defeated via main body shaft coupling (not shown) from main body cover 2 Enter.

Also, as shown in Fig. 7 (b), development shaft coupling 85 passes through shaft coupling of the space inserted with parts of bearings 70 inside it Device support shaft 75, so that being by the support of shaft coupling support shaft 75 being capable of relative rotation.Therefore, as shown in figure 3, development shaft coupling 85 When inputting driving force, rotated centered on rotation axis A3 relative to developing frame 25.

Supply gear 86 is formed as the substantially cylindrical shape extended along left and right directions, spreads its complete cycle range in its circumferential surface Ground forms the gear teeth with teeth.

Also, supply gear 86 cannot phase in a manner of engaging from rear side with the small-diameter gear portion 90 of development shaft coupling 85 To the left part for being rotatably mounted to supply roll shaft 51.

Therefore, when driving force is input to development shaft coupling 85, supply gear 86 is by the driving force with second axis A2 Centered on integrally rotated with supply roller 33 (supply roll shaft 51 and sponge roller 52).That is, development shaft coupling 85 is configured to supply Gear 86 transmits driving force, and supply gear 86 is configured to the driving force of autography shaft coupling in future 85 via supply roll shaft 51 to sea Continuous roller 52 transmits.

Intermediate gear 87 is formed as the substantially cylindrical shape extended along left and right directions, is provided integrally with its left part The small diameter portion 93 of large-diameter portion 92 and its right part.

Large-diameter portion 92 is formed as the substantially cylindrical shape extended along left and right directions.It is whole throughout its in the circumferential surface of large-diameter portion 92 Form the gear teeth with teeth to all ranges.

Small diameter portion 93 is formed as its outer diameter substantially cylindrical shape smaller than the outer diameter of large-diameter portion 92, and is formed as with central axis The substantially cylindrical shape that line and the consistent mode of large-diameter portion 92 extend to the right from the right side of large-diameter portion 92.In small diameter portion 93 Circumferential surface forms the gear teeth with teeth throughout its complete cycle range.

Also, intermediate gear 87 is in such a way that large-diameter portion 92 is engaged from front side with the small-diameter gear portion 90 of development shaft coupling 85 It can be installed on the intermediate gear support shaft 59 of the first side wall 47 with the relative rotation.

As shown in Fig. 7 (b), blender gear 88 is formed as the substantially cylindrical shape extended along left and right directions, in its week Face forms the gear teeth with teeth throughout its complete cycle range.

Also, blender gear 88 cannot opposite rotation in a manner of engaging from rear side with the small diameter portion 93 of intermediate gear 87 It is installed on the left part of blender axis 76 with turning.

Also, the rear upper portion of blender gear 88 is configured at large diameter gear portion 89 and the first side wall in the lateral direction Between 47.

That is, as shown in fig. 6, development shaft coupling 85 supply gear 86, intermediate gear when being configured to project in the lateral direction 87 (large-diameter portions 92) and all overlappings of blender gear 88.

As shown in figure 3, developing gear 77 is formed as the substantially cylindrical shape extended along left and right directions, it is provided integrally with aobvious Shadow gear part 79, middle part 80 and casing insertion section 81.

Developing gear portion 79 is set to the right part of developing gear 77, is formed in its circumferential surface throughout its complete cycle range with teeth The gear teeth.

Middle part 80 is formed as its outer diameter substantially cylindrical shape smaller than the outer diameter in developing gear portion 79, and is formed as in Mandrel line is protruded with the consistent mode in developing gear portion 79 from the left side in developing gear portion 79 to the left.

Casing insertion section 81 is formed as its outer diameter substantially cylindrical shape smaller than the outer diameter of middle part 80, and is formed as in Mandrel line is protruded with the consistent mode in developing gear portion 79 from the left side of middle part 80 to the left.

Also, developing gear 77 is installed on the left part of developing roller shaft 53 in a manner of being unable to relative rotation, so that development Gear part 79 is engaged from rear side with large diameter gear portion 89 (referring to Fig. 6), and the left side of casing insertion section 81 and developing roller shaft 53 left side is consistent in the lateral direction (referring to Fig. 4 (b)).

Specifically, as shown in Fig. 7 (b), the portion corresponding with developing gear portion 79 and middle part 80 in developing roller shaft 53 Divide the section substantially D shape being cut off by a part that D-shaped is cut into its circumferential surface.Also, developing gear portion 79 and centre The inner peripheral surface in portion 80 is formed as section substantially D shape in a manner of corresponding with the part by D-shaped cutting processing of developing roller shaft 54. The substantially D shape of developing roller shaft 54 is inserted partially into developing gear portion 79 and middle part 80, so that developing gear 77 is with cannot phase Developing roller shaft 53 is installed on to the mode of rotation.

Therefore, as shown in figure 3, driving force input development shaft coupling 85 when, developing gear 77 by the driving force with It is rotated integrally centered on first axle A1 with developer roll 34 (developing roller shaft 53 and rubber rollers 54).That is, development shaft coupling 85 is constituted To transmit driving force to developing gear 77, developing gear 77 is configured to the driving force of autography shaft coupling in future 85 via developer roll Axis 53 is transmitted to rubber rollers 54.

Also, as shown in fig. 6, the distance between rotation axis A3 and first axle A1 of development shaft coupling 85 D1 and rotation The distance between axis A3 and second axis A2 D2 are configured to roughly the same length.

In addition, positioning region 60, the protruding portion 67 of fixed part 61 and developing gear 77 are configured in developing gear 77 side by side Their axis center is located on identical imaginary line on the radial X of (developing roller shaft 53) rotation.Specifically, 60 phase of positioning region Rear side (the radial side X) is configured at for developing gear 77, protruding portion 67 is configured at front upper side (diameter relative to developing gear 77 To the other side X).That is, protruding portion 67 is set to the opposite of positioning region 60 relative to developing gear 77 in the left side of the first side wall 47 Side.

(2-3) collar tube sub-assembly

As shown in figure 3, collar tube sub-assembly 72 is set by the sliding property material better than gear stand 73, i.e. such as POM (polyformaldehyde) The formation such as rouge, PA (polyamide) resin and PTFE (polytetrafluoroethylene (PTFE)) resin.In detail, collar tube sub-assembly 72 is by passing through drawing-die Wear test (テ ー パ abrasion Shi test) measurement measurement result (wear resistance) be, for example, 5mg/1000 times~15mg/1000 times Material formed, preferably formed by 8mg/1000 times~15mg/1000 times material.In addition, wear test is with JIS K7204 Plastics emery wheel carry out wear test method on the basis of be measured.

In addition, collar tube sub-assembly 72 is provided integrally with the first covering part 95, the second covering part 96 and third covering part 97.

First covering part 95 is formed as integrally having along left and right directions extension and the closed substantially cylindrical shape in left side There are continuous portion 98 and end covering part 99.

Continuous portion 98 is the right part of the first covering part 95, is formed as the general cylindrical shape extended along left and right directions Shape.The internal diameter in continuous portion 98 is formed as (referring to Fig. 7 (b)) more slightly larger than the outer diameter of middle part 80.

End covering part 99 is the left part (left side in continuous portion 98) of the first covering part 95, is formed as its outer diameter than connecting The small substantially cylindrical shape of the outer diameter in continuous portion 98, and be formed as in such a way that central axis and continuous portion 98 are consistent from continuous portion 98 Left part protrude to the left.

In addition, the left end face closure of end covering part 99, internal diameter is formed as (ginseng more slightly larger than the outer diameter of casing insertion section 81 According to Fig. 7 (b)).

Second covering part 96 and continuous portion 98 are continuous, are formed as the substantially writing board shape extended along up and down direction, have Fixed part side covering part 100 and oriented side covering part 101.

As shown in figure 5, fixed part side covering part 100 is formed as the front upper side from the right part on the outer peripheral surface in continuous portion 98 The substantially writing board shape that part extends towards front upper place.

In fixed part side, covering part 100 is formed with fixation hole 102 and arc sections 104.

Fixation hole 102 is in the upper end of fixed part side covering part 100 and the corresponding landform of the second threaded hole 65 of protruding portion 67 At, be formed through for side view it is roughly circular.

Arc sections 104 are along the substantially circular shape of the circumferential surface in small-diameter gear portion 90, with from the downside of fixation hole 102 The front-end edge of fixed part side covering part 100 is formed towards the mode that rear is recessed.

Oriented side covering part 101 is formed as from the rear side part of the right part in the outer peripheral surface in continuous portion 98 towards under rear The substantially writing board shape of Fang Yanshen (referring to Fig. 3).

Location hole 103 is formed in oriented side covering part 101.

Location hole 103 is in the lower end of positioning region side covering part 101 and the corresponding landform of the first threaded hole 64 of positioning region 60 At the side view being formed through to extend along front-rear direction (being the direction for connecting back upper place and front lower place in detail) is substantially long Hole shape.The short side direction length of location hole 103 is the length that roughly same outer diameter of insertion hole 63 with positioning region 60, length Edge direction length is formed as the outer path length than insertion portion 63.

As shown in figure 3, third covering part 97 and the second covering part 96 are continuous, be formed as towards right substantially plate outstanding Shape has upside covering part 105 and downside covering part 106.

Upside covering part 105 is formed as continuous from the rear end at right surface of fixed part side covering part 100 and towards the right side The substantially writing board shape of Fang Yanshen.

Downside covering part 106 is formed as side view substantially L-shaped, and is formed as the right surface from positioning region side covering part 101 On rear end and lower end continuously towards right extend.

Upside covering part 105 and downside covering part 106 are respectively formed as its left and right directions length than developing gear portion 79 Left and right directions length is slightly long.

Also, the details of collar tube sub-assembly 72 are aftermentioned, as shown in Fig. 2, collar tube sub-assembly 72 is plugged in casing with end covering part 99 Enter portion 81 be entrenched in inside mode (referring to Fig. 4 (b)) be configured at parts of bearings 70 rear section left side (reference Fig. 5).

(2-4) gear stand

As shown in figure 3, gear stand 73 and 72 split settings of collar tube sub-assembly, such as by ABS resin (acrylonitrile-butadiene- Styrene copolymer resin) etc. formed.In detail, gear stand 73 is by the measurement result by die wear measuring (wear resistance) is, for example, that 16mg/1000 times~25mg/1000 times material is formed, preferably by 18mg/1000 times~20mg/ 1000 materials are formed.Gear stand 73 is formed as the substantially box shape towards right and opened backward, be formed to by The size (front-rear direction length and up and down direction length) that gear train 71 and collar tube sub-assembly 72 cover together.

Gear stand 73 is provided integrally with covered body wall 110 and lid portion front 111 (referring to Fig. 8).

As shown in Fig. 4 (a), covered body wall 110 is formed as the side view rectangular shape that length is long in the longitudinal direction.Separately Outside, it is formed with shaft coupling on covered body wall 110 and exposes mouth 112, casing engaging slot 113, the 114 (reference of the first screw thread insertion hole Fig. 3) and the second screw thread insertion hole 115 (referring to Fig. 3).

Shaft coupling exposes front-rear direction substantial middle part of the mouth 112 in covered body wall 110 so that development shaft coupling 85 Shaft coupling portion 91 left surface (in conjunction with recess portion 94) expose mode be formed through for side view it is substantially circular.

Casing engaging slot 113 is formed in shaft coupling and exposes the rear side of mouth 112, and is formed as the rear end from covered body wall 110 The side view substantially C-shaped that edge is recessed towards front lower place.The groove width (internal diameter) of casing engaging slot 113 is formed as than end covering part 99 Outer diameter it is slightly larger (referring to Fig. 4 (b)).

As shown in figure 3, the first screw thread insertion hole 114 casing engaging slot 113 downside and the first threaded hole 64 accordingly Formed, be formed through for side view it is roughly circular.The aperture of first screw thread insertion hole 114 is formed as with the outer diameter of insertion portion 63 substantially It is identical.In addition, the peripheral end portion of the first screw thread insertion hole 114, which is divided into first Jie, sets portion 116.

Second screw thread insertion hole 115 is accordingly formed in the upside of casing engaging slot 113 with the second threaded hole 65, breakthrough form It is roughly circular as side view.The peripheral end portion of second screw thread insertion hole 115 is divided into second Jie and sets portion 117.

In addition, covered body wall 110 is provided integrally with edge part 120 and fitting portion 121 (referring to Fig. 7 (b)).

Edge part 120 is formed as outstanding substantially plate shaped from the rear end on the right surface of covered body wall 110 towards right Shape.As shown in Fig. 2, the left and right directions length of edge part 120 is formed as and the left and right directions same length in continuous portion 98 Length (slightly long).

As shown in Fig. 7 (b), the fitting portion 69 of fitting portion 121 and bracket holding section 58 is arranged in correspondence in covered body wall 110 front end at right surface.Also, fitting portion 121 is formed as towards the open section in front substantially U-shaped, and shape As prominent from the right surface of covered body wall 110 towards right.Also, the front end of fitting portion 121 and lid portion front 111 Rear surface connection.

About the inside dimension of fitting portion 121, up and down direction length is formed as long with the up and down direction of fitting portion 69 Roughly the same length is spent, front-rear direction length is formed as slightly longer than the front-rear direction length of fitting portion 69.

As shown in figure 8, lid portion front 111 be formed as continuously extending to the right from the front end of covered body wall 110 it is big Cause writing board shape.

In addition, lid portion front 111 is provided integrally with side wall holding section 122.

What side wall holding section 122 was formed as continuously extending to the right from the upper portion of the right part of lid portion front 111 Substantially writing board shape.

Also, the details of gear stand 73 are aftermentioned, as shown in Fig. 2, gear stand 73 to cover gear mechanism (development together Shaft coupling 85 (other than the combination recess portion 94 of shaft coupling 91), supply gear 86, intermediate gear 87 and blender gear 88) Mode is installed on the first side wall 47 from left side.

In addition, in Delevoping cartridge 19 (other than handle part 55), the part positioned at top side is tooth as shown in Fig. 4 (a) The rear section of the upper end of wheel support 73, the part positioned at lower side are the front parts of the lower end of gear stand 73.

That is, gear stand 73 is (big by the major part of the developing frame 25 other than handle part 55 in the view visual angle of left side On body) covering.

3. the assembling of collar tube sub-assembly and gear stand relative to developing frame

Then, illustrate the assembling of collar tube sub-assembly 72 and gear stand 73 relative to developing frame 25.

In order to which collar tube sub-assembly 72 is assembled in developing frame 25, as shown in figure 3, collar tube sub-assembly 72 is from left side relative to installation There are parts of bearings 70 and the first side wall of gear train 71 47 to be assembled, so that the insertion portion 63 of positioning region 60 is inserted through location hole 103, and expose the second threaded hole 65 via fixation hole 102.

So, as shown in Fig. 4 (b), the middle part 80 of developing gear 77 is embedded in the continuous portion of the first covering part 95 98 inside, and the casing insertion section 81 of developing gear 77 is embedded in the inside of the end covering part 99 of the first covering part 95. Middle part 80 and the circumferential surface of casing insertion section 81 are from their radial outside by the first covering part 95 (continuous portion 98 and end as a result, Portion's covering part 99) covering.Also, casing insertion section 81 and the respective left side of developing roller shaft 53 are by end covering part 99 from left side Covering, and it is opposite with the left wall of end covering part 99 from left side.

In addition, the second covering part 96 (fixed part side covering part 100 and oriented side covering part 101) is relative to the first side wall 47 From left side in the lateral direction at spaced intervals relatively (referring to Fig. 3).

At this point, as shown in Fig. 2, upside covering part 105 is in a manner of covering large diameter gear portion 89 from rear side in large diameter gear The rear upside in portion 89 is oppositely disposed at spaced intervals (referring to Fig. 5).In addition, the rear section of downside covering part 106 is in base end part The rear side of 62 (referring to Fig. 3) is oppositely disposed at spaced intervals, between lower portion separates on the downside of base end part 62 (referring to Fig. 3) Every ground relative configuration (referring to Fig. 5), so that base end part 62 (ginseng of the downside covering part 106 from rear side and downside covering positioning region 60 According to Fig. 3).

Being completed relative to the first side wall 47 of collar tube sub-assembly 72 as a result,.

Then, gear stand 73 is assembled into the first side wall 47.

In order to which gear stand 73 is assembled in the first side wall 47, as shown in figure 3, by gear stand 73 from left group loaded on the One side wall 47, so that insertion portion 63 is inserted through the first screw thread insertion hole 114, and the second threaded hole 65 is inserted via the second screw thread Expose in hole 115.

So, as shown in Fig. 7 (b), the fitting portion 121 of covered body wall 110 is by the fitting portion of bracket holding section 58 69 are entrenched in inside, as shown in figure 8, the side wall holding section 122 of lid portion front 111 is configured at the upper of the front end of the first side wall 47 The rear side of side section.

At this point, as shown in Fig. 4 (b), second covers as shown in Fig. 2, end covering part 99 is configured in casing engaging slot 113 Cover 96 is configured in the lateral direction between parts of bearings 70 and covered body wall 110, and coverd part side wall 110 is covered from left side Lid.

Also, as shown in Fig. 4 (a), the left surface (in conjunction with recess portion 94) in shaft coupling portion 91 is exposed mouth 112 via shaft coupling and is revealed Out.

Being completed relative to the first side wall 47 of gear stand 73 as a result,.

At this point, as shown in figure 3, gear stand 73 is configured at left side relative to gear mechanism 78.

Then, make first screwed part 123 of an example as screwed part via the location hole 103 of collar tube sub-assembly 72 and First screw thread insertion hole 114 and be screwed together in the first threaded hole 64.

At this point, being situated between the head 131 of the first screwed part 123 and the peripheral end portion of location hole 103 as shown in Fig. 4 (b) It is situated between equipped with first and sets portion 116.

Therefore, it is able to suppress torque when the first screwed part 123 is screwed together in the first threaded hole 64 and portion is set by first Jie 116 and the case where act on the second covering part 96, be able to suppress the loosening of collar tube sub-assembly 72.

On the other hand, about gear stand 73, as shown in Fig. 7 (b), fitting portion 121 is chimeric with bracket holding section 58, such as Shown in Fig. 8, side wall holding section 122 is configured at the rear side of the front end of the first side wall 47, therefore even if 123 spiral shell of the first screwed part Torque when together in the first threaded hole 64 acts on covered body wall 110, is also able to suppress the loosening of gear stand 73.

Also, in the first screwed part 123 relative to the first threaded hole 64 in the state of screwing togather completion, such as Fig. 4 (b) institute Show, the peripheral end portion of location hole 103 and first Jie set base end part 62 and the first screwed part that portion 116 is clamped in positioning region 60 Between 123 head 131.

That is, collar tube sub-assembly 72 and gear stand 73 are respectively positioned (fixation) in shared positioning region 60.

Then, by as second screwed part 124 of an example of screwed part as illustrated in fig. 3 via fixation hole 102 and Second screw thread insertion hole 115 is screwed together in the second threaded hole 65.

At this point, being situated between the head 132 of the second screwed part 124 and the peripheral end portion of fixation hole 102 as shown in Fig. 4 (b) It is situated between equipped with second and sets portion 117.

Also, in the second screwed part 124 relative to the second threaded hole 65 in the state of screwing togather completion, fixation hole 102 Peripheral end portion and second be situated between set portion 117 be clamped in fixed part 61 protruding portion 67 and the second screwed part 124 head 132 it Between.

That is, collar tube sub-assembly 72 and gear stand 73 are positioned (fixation) in shared protruding portion 67 respectively.

That is, the two sides of collar tube sub-assembly 72 and gear stand 73 developing gear 77 in radial X (referring to Fig. 6) respectively are by spiral shell Line is fixed.

At this point, the peripheral end portion of location hole 103 is clamped in base end part 62 and first Jie sets between portion 116, fixation hole 102 Peripheral end portion is clamped in protruding portion 67 and second Jie sets between portion 117, therefore the mobile quilt of collar tube sub-assembly 72 in the lateral direction Limitation.

In addition, as shown in Fig. 2, the left-handed watch of the second covering part 96 (fixed part side covering part 110 and oriented side covering part 101) The rear end in face is contacted with the right part of the edge part 120 of gear stand 73, third covering part 97 (upside covering part 105 and under Side covering part 106) right part contacted with the rear end of the left surface of parts of bearings 70.

As described above, collar tube sub-assembly 72 and gear stand 73 being completed relative to developing frame 25.

Gear mechanism 78 is passed through from Right side support, and by gear stand 73 from Left-side support by the first side wall 47 as a result, The case where gear stand 73 inhibits gear mechanism 78 unexpectedly to fall off from the first side wall 47.That is, gear mechanism 78 passes through first The collective effect of side wall 47 and gear stand 73 and be supported on developing frame 25.

4. function and effect

(1) about the Delevoping cartridge 19, as shown in Fig. 4 (b), collar tube sub-assembly 72 and gear stand 73 are respectively located in shared Positioning region 60.

Therefore, the case where different parts being respectively positioned in from collar tube sub-assembly 72 and gear stand 73 on the first side wall 47 It compares, can be realized further increasing for the positioning precision of collar tube sub-assembly 72 and gear stand 73, and can reduce Space for positioning collar tube sub-assembly 72 and bracket 73.

As a result, can be realized the raising of the positioning precision of developing gear 77 and gear mechanism 78, and can Realize the miniaturization of Delevoping cartridge 19.

Also, collar tube sub-assembly 72 is formed by the sliding property material better than gear stand 73 (such as POM resin).Therefore, i.e., Make also to be able to suppress the abrasion of collar tube sub-assembly 72 in the case where collar tube sub-assembly 72 and the contact of developing gear 77 and sliding friction, And it can ensure that developing gear 77 swimmingly rotates.In addition, due to collar tube sub-assembly 72 and 73 split settings of gear stand, It so that collar tube sub-assembly 72 is formed by the good material of sliding property, can be realized the reduction of material cost.

Therefore, Delevoping cartridge 19 according to the present invention can be realized the relative positioning essence of developing gear 77 and gear mechanism 78 The raising of degree, and can be realized the miniaturization of Delevoping cartridge 19.In turn, it is able to suppress the abrasion of collar tube sub-assembly 72, while can be true It protects developing gear 77 swimmingly to rotate, and can be realized the reduction of material cost.

(2) in addition, as shown in figure 3, positioning region 60 is prominent to the left (second direction side) from the first side wall 47.

Therefore, the collar tube sub-assembly 72 and gear branch in left side (second direction side) can will be configured at relative to the first side wall 47 Frame 73 is respectively effectively positioned at shared positioning region 60.

Also, as shown in Fig. 4 (b), the insertion portion 63 of positioning region 60 is inserted through collar tube sub-assembly 72 and is formed by location hole 103 And gear stand 73 is formed by the first screw thread insertion hole 114.In addition, the short side direction length of location hole 103 is (specifically It is roughly vertical direction length) be formed as and the length that roughly same outer diameter of insertion portion 63, the hole of the first screw thread insertion hole 114 Diameter is formed as and the diameter that roughly same outer diameter of insertion portion 63.

Therefore, movement of the collar tube sub-assembly 72 to roughly vertical direction is limited, radial direction of the gear stand 73 to insertion portion 63 The movement of (specifically front and back and up and down direction) is limited.

That is, by the insertion portion 63 of positioning region 60, collar tube sub-assembly 72 and gear stand 73 respectively at least with left and right directions It is positioned on the direction of intersection.

As a result, can be respectively high-precision by collar tube sub-assembly 72 and gear stand 73 on the direction intersected with left and right directions It is positioned at shared positioning region 60 to degree.

(3) in addition, the second covering part 96 of collar tube sub-assembly 72 is in left and right directions (first axle direction) as shown in Fig. 4 (b) Upper configuration is between the first side wall 47 and the covered body wall 110 of gear stand 73.

Therefore, 96 (fixed part side covering part 100 and oriented side covering part 101) coverd part side wall 110 of the second covering part from Left side covering.

As a result, impacting even if applying from left side to Delevoping cartridge 19, also impact can be inhibited to apply by gear stand 73 It is added to collar tube sub-assembly 72.

Therefore, the positioning accuracy for being able to suppress rubber rollers 54 relative to developing frame 25 reduces.

In addition, being also able to suppress since the case where impact is applied to collar tube sub-assembly 72 is suppressed than gear stand 73 The damaged situation of the collar tube sub-assembly 72 of price.

(4) in addition, as shown in figure 3, being provided with fixed part 61 in the first side wall 47.

Fixed part 61 has protruding portion 67 in the left side of the first side wall 47, which is arranged relative to developing gear 77 Opposite side in positioning region 60.

Also, collar tube sub-assembly 72 and gear stand 73 are individually fixed in shared protruding portion 67.

Therefore, collar tube sub-assembly 72 and gear stand 73 can be individually fixed in the first side wall 47, and use can be reduced In the space of fixed sleeving component 72 and gear stand 73.

Also, developing gear 77 and supported together by gear stand 73 with the first side wall 47 that sleeve component 72 covers Gear mechanism 78 be respectively relative to the first side wall 47 and accurately position.

Especially, developing gear 77 is configured at as illustrated in fig. 3 between positioning region 60 and protruding portion 67, casing insertion section 81 Circumferential surface sleeve component 72 the covering of end covering part 99 (referring to Fig. 4 (b)), therefore can be by developing gear 77 relative to the One side wall 47 more precisely positions.

(5) in addition, as shown in fig. 6, positioning region 60, protruding portion 67 and developing gear 77 are respectively configured as passing through development It is arranged on the straight line that the rotary shaft of gear 77 and radially X extend.Specifically, positioning region 60 is configured relative to developing gear 77 In rear side (the radial side X), protruding portion 67 is configured at front upper side (the radial other side X) relative to developing gear 77.

Therefore, even if collar tube sub-assembly 72 and the contact of developing gear 77 and sliding friction, are also able to suppress collar tube sub-assembly 72 It loosens.

As a result, can be realized raising of the collar tube sub-assembly 72 relative to the positioning accuracy of the first side wall 47, and then can Realize raising of the developing gear 77 relative to the positioning accuracy of the first side wall 47.

Especially, collar tube sub-assembly 72 and each comfortable straight line for passing through developing gear 77 and radially X extends of gear stand 73 Above and in the two sides of developing gear 77 it is fixed in positioning region 60 and fixed part 61.Therefore, even if impact is applied to set from left side Pipe portion part 72 and/or gear stand 73, are also able to suppress collar tube sub-assembly 72 and/or gear stand 73 moves to the right.

Therefore, the percussion for being applied to collar tube sub-assembly 72 and/or gear stand 73 is shown to what sleeve component 72 covered The case where shadow gear 77, is suppressed, and then impact is inhibited to be applied to developer roll 34 via developing gear 77.

As a result, being able to suppress developer roll 34 relative to the movement of developing frame 25, developer roll 34 can be effectively suppressed Rubber rollers 54 relative to developing frame 25 positioning accuracy reduce.

(6) in addition, first covering part 95 has continuous portion as shown in figure 3, collar tube sub-assembly 72 has the first covering part 95 98 and end covering part 99.

Also, in the state that collar tube sub-assembly 72 is assembled in the first side wall 47, as shown in Fig. 4 (b), end covering part 99 from The left side of left side covering casing insertion section 81.The left side of casing insertion section 81 is from left side and end covering part 99 as a result, Left wall is opposite.

Therefore, the movement of developing gear 77 to the left is limited, and can be realized developing gear 77 relative to developing frame 25 Positioning accuracy raising.

(7) in addition, as shown in figure 3, collar tube sub-assembly 72 has covers with the continuous portion 98 of the first covering part 95 continuous second Cover 96.

Also, as shown in Fig. 4 (b), the second covering part 96 (fixed part side covering part 100 and oriented side covering part 101) is solid It is covered due to protruding portion 67, and by the covered body wall of gear stand 73 110 from left side.

Therefore, it impacts even if applying from left side to Delevoping cartridge 19, can also be pressed down by the covered body wall 110 of gear stand 73 System impact is applied to the second covering part 96.

As a result, being able to suppress reduction of second covering part 96 relative to the positioning accuracy of the first side wall 47, Jin Erneng Enough inhibit reduction of the collar tube sub-assembly 72 relative to the positioning accuracy of the first side wall 47.

(8) in addition, as shown in Fig. 4 (b), gear stand 73 passes through the first screw thread respectively in positioning region 60 and protruding portion 67 Component 123 and the second screwed part 124 are fixed.

In addition, the first screwed part 123 (the second screwed part 124) is situated between via the first of gear stand 73 sets portion 116 (the Two be situated between sets portion 117) and fixed part side covering part 110 (oriented side covering part 101) be fixed on positioning region 60 (protruding portion 67).

Therefore, in the peripheral end portion (fixation hole 102 of the first screwed part 123 (the second screwed part 124) and location hole 103 Peripheral end portion) between be situated between to be equipped with first and be situated between and set portion 116 (second be situated between sets portion 117).

As a result, being able to suppress by the gear stand 73 (first Jie sets portion 116 or second Jie sets portion 117) set that is situated between Torque when first screwed part 123 and the second screwed part 124 are respectively screwed together in positioning region 60 and protruding portion 67 is in Two covering parts 96.

Therefore, the first screwed part 123 and the second screwed part 124 are respectively being screwed together in positioning region 60 and protruding portion 67 When, it is able to suppress the loosening of collar tube sub-assembly 72, so as to realize positioning accuracy of the collar tube sub-assembly 72 relative to the first side wall 47 It improves.

(9) in addition, as shown in fig. 6, developing gear portion 79 with development shaft coupling 85 large diameter gear portion 89 engage, therefore show Shadow gear 77 can effectively receive the driving force for being input to development shaft coupling 85.

Therefore, can future autography shaft coupling 85 driving force be transmitted to rubber rollers 54 via developing roller shaft 53, can Rubber rollers 54 are made to be stably rotated driving.

(10) in addition, in Delevoping cartridge 19, as shown in figure 3, have supply roller 33 (referring to Fig.1) and supply gear 86, Middle supply roller 33 has supply roll shaft 51 and sponge roller 52, and supply gear 86 is set to the left part of supply roll shaft 51.

Therefore, rubber rollers will can be effectively supplied to by sponge roller 52 from the toner of toner accommodating chamber 26 54。

Also, as shown in fig. 6, the distance between rotation axis A3 and first axle A1 of development shaft coupling 85 D1 and rotation The distance between axis A3 and second axis A2 D2 are roughly the same length.

Therefore, can balance well will enter into development shaft coupling 85 driving force be transmitted to respectively developing gear 77 and Supply gear 86.

As a result, rubber rollers 54 and sponge roller 52 can be made respectively to be stably rotated driving.

5. second embodiment

Then, second embodiment of the present invention is illustrated.

Fig. 9 is the exploded perspective of the driving unit from the second embodiment of Delevoping cartridge of the invention from upper left side Figure.

In Fig. 9, reference identical with these parts is marked with for part corresponding with each section shown in FIG. 1 to FIG. 8 Simultaneously the description thereof will be omitted for label.

In the first embodiment, as shown in Fig. 3 and Fig. 7 (b), in the left part of developing roller shaft 53, only with developing gear Portion 79 and the corresponding part of middle part 80 are cut into section substantially D shape by D-shaped.

On the other hand, in this second embodiment, as shown in figure 9, whole portions of the left part for developing roller shaft 53 Divide (being the part in part corresponding with developing gear portion 79 and its left side in the lateral direction), a part of circumferential surface is cut Fall, section substantially D shape is cut by D-shaped.

It is accordingly set in addition, developing gear 77 has with the part for the developing roller shaft 53 being cut off by D-shaped cutting processing The semicolumn portion 130 set.

In detail, semicolumn portion 130 is formed as the side view substantially D shape bloated towards rear, with from middle part 80 The rear section of left side is formed towards left mode outstanding.

This developing gear 77 is installed on developing roller shaft 53 in a manner of being unable to relative rotation, so that semicolumn portion 130 It is substantially circular that left side and the left side of developing roller shaft 53 form side view.That is, from side, by the aobvious of D-shaped cutting processing The planar section of shadow roller 53 is abutted with the planar section in the semicolumn portion 130 of D shape, so that developing gear 77 cannot be relative to aobvious 53 relative rotation of shadow roll shaft.

Also, semicolumn portion 130 and the left part (hereinafter referred to as socket insertion part) of corresponding developing roller shaft 53 It is configured in the state that collar tube sub-assembly 72 is assembled in the first side wall 47 in end covering part 99.

The left side of socket insertion part is covered by end covering part 99 from left side as a result, and its outer peripheral surface is by end Covering part 99 is covered from radial outside.That is, the circumferential surface of developing roller shaft 53 is covered by end covering part 99.In addition, implementing second In mode, developing roller shaft 53 corresponds to an example of rotary part.

According to such second embodiment, all parts of the left part of developing roller shaft 53 are by D-shaped cutting processing, therefore Compared with the case where a part of the left part of developing roller shaft 53 is by D-shaped cutting processing, handling ease and can be realized manufacture at This reduction.

In addition, developing gear 77 is installed on developing roller shaft 53, so that the left side in semicolumn portion 130 and developing roller shaft 53 It is substantially circular that left side forms side view, therefore when the driving force for carrying out autography shaft coupling 85 is transmitted to developing gear 77, energy It enough keeps the position precision of developing gear 77 and developing roller shaft 53 and rotates developing gear 77 and developing roller shaft 53 integrally.

That is, developing gear 77 can future autography shaft coupling 85 driving force be effectively transmitted to developing roller shaft 53.

In addition, developing roller shaft 53 is formed in a manner of extending along left and right directions (first axle direction), therefore can cut It is configured to rotate rubber rollers 54 centered on first axle A1 on the spot.

As a result, rubber rollers 54 can be made to be stably rotated driving.

Moreover, can also play the role of identical with above-mentioned first embodiment in such second embodiment Effect.

6. variation

Above-mentioned Delevoping cartridge 19 is an embodiment of the invention, and the present invention is not limited to above-mentioned embodiments.

Other than above-mentioned monochrome printers, the image forming apparatus for being equipped with Delevoping cartridge 19 is also configured to colour Printer.

In the case where image forming apparatus is configured to color printer, it is configured to have multiple photoreceptors and deposits The tandem type color printer of the direct-type of storage media transfer member, or it is configured to have multiple photoreceptors, middle transfer body With the tandem type color printer of the intermediate transfer formula of transfer member.

Moreover, other than the divergence type handle box isolated with Delevoping cartridge 19 in addition to above-mentioned drum box 18, handle box 15 can also be with Has the one-piece type handle box of bulging box 18 and Delevoping cartridge 19 with being integrally constituted.

In turn, it is also possible to that photoreceptor is arranged in the main body cover 2 of an example as apparatus main body, only makes Delevoping cartridge 19 It is loaded and unloaded relative to main body cover 2.

In turn, Delevoping cartridge 19 is also configured to, and the toner Cartridge for accommodating toner is detachably installed on to have and show The frame of shadow roller 34.

Furthermore, it is also possible to substitute above-mentioned photosensitive drums 20 using photoreceptors such as such as sensitive tapes.

Furthermore, it is also possible to come using developer carryings phosphor bodies such as the rollers, band, development sleeve of such as sponge roller or brush Substitute the rubber rollers 54 that above-mentioned developer roll 34 has.

Furthermore, it is also possible to be substituted using the developer replenishings phosphor bodies such as the roller or band of such as brush, supply sleeve State the sponge roller 52 that supply roller 33 has.

Furthermore, it is also possible to substitute above-mentioned blender 29 using transfer members such as such as spiral screw rods or conveyer belt.

Furthermore, it is also possible to turn such as using contact-type transfer belt, transfer brush, transfer scraper, overlay film type transfer device Transfer member of the non-contact types such as component such as corona-type etc. is printed to substitute above-mentioned transfer roll 21.

Furthermore, it is also possible to for example using non-grid net corona type (U ロ ト ロ Application type) charged device, jagged discharge component Etc. non-contact types charged device or the charged device of contact-types such as charged roller etc. to substitute above-mentioned have the electrification of grid net corona type Device 22.

Furthermore, it is also possible to substitute above-mentioned scanning element 16 using exposure components such as such as LED units.

Moreover, said gear be 71 be drive transmission mechanism an example, but other than gear, drive transmission mechanism can also To be made of band and pulley, gear and rack gear, chain etc..

Moreover, gear (specifically development shaft coupling 85, supply gear 86, centre that said gear mechanism 78 has Gear 87 and blender gear 88) be rotary body an example, but other than gear, rotary body also includes band, friction pulley etc..

Moreover, above-mentioned developing gear 77 and developing roller shaft 53 are an example of rotary part respectively, but in addition to developing gear 77 And except developing roller shaft 53, rotary part also includes the brush etc. for being embedded in the rubber rollers 66 of hollow form.

In turn, it is also possible to above-mentioned printer 1 image reading unit etc. is installed and is configured to compounding machine.

Label declaration

19: Delevoping cartridge；

25: developing frame；

47: the first side wall；

52: sponge roller；

53: developing roller shaft；

54: rubber rollers；

60: positioning region；

61: fixed part；

72: collar tube sub-assembly；

73: gear stand；

77: developing gear；

78: gear mechanism；

85: development shaft coupling；

86: supply gear；

95: the first covering parts；

96: the second covering parts；

123: the first screwed parts；

124: the second screwed parts；

A1: first axle；

A2: first axle；

A3: rotation axis；

D1: the distance between first axle A1 and rotation axis A3；

D2: the distance between second axis A2 and rotation axis A3.

Claims (11)

1. a kind of Delevoping cartridge, which is characterized in that

Include: framework (25), has the first wall (47)；

Developer carrying phosphor bodies (54), are configured to bearing developer, and are configured to centered on first axle (A1) opposite It is rotated in the framework, is configured at first axle direction side i.e. first direction side relative to first wall；

Rotary part (53) is configured to centered on the first axle integrally rotate with the developer carrying phosphor bodies, At least part of the rotary part is configured at the opposite side i.e. second party of the first direction side relative to first wall To side；

Parts of bearings (70) is fixed on first wall, and supports the rotary part；

Developing gear (77) is supported on the end of the rotary part, and for rotating the rotary part；

Develop shaft coupling (85), have with developing gear meshed gears portion, and receive from outside to the developing gear The driving force of input；

Collar tube sub-assembly (72), covers at least part of the circumferential surface of the rotary part, is configured at institute relative to first wall State second direction side；And

Bracket (73) is configured in the second direction relative to the developing gear with described sleeve pipe component split settings Side supports the development shaft coupling together with first wall,

Described sleeve pipe component is formed by the sliding property material better than the bracket,

First wall has the shared positioning region constituted in a manner of positioning described sleeve pipe component and the bracket respectively (60)。

2. Delevoping cartridge according to claim 1, which is characterized in that

The positioning region is prominent from first wall to the second direction side.

3. Delevoping cartridge according to claim 1, which is characterized in that

At least part of described sleeve pipe component configured on the first axle direction first wall and the bracket it Between.

4. Delevoping cartridge according to claim 1, which is characterized in that

First wall has shared fixed part (61) in the second direction side, and the fixed part is relative to the rotary part It is set to the opposite side of the positioning region, and described sleeve pipe component and the bracket are fixed respectively.

5. Delevoping cartridge according to claim 4, which is characterized in that

The positioning region, the fixed part are respectively configured at across the central axis of the rotary part and radially prolonging in rotation On the straight line stretched.

6. Delevoping cartridge according to claim 4, which is characterized in that

Described sleeve pipe component has the of the second direction side end face that the rotary part is covered from the second direction side One covering part (95).

7. Delevoping cartridge according to claim 6, which is characterized in that

Described sleeve pipe component has the second covering part (96), and second covering part and first covering part are continuous, from described the Two direction sides are opposite with first wall, and are fixed on the fixed part,

The bracket at least covers second covering part from the second direction side.

8. Delevoping cartridge according to claim 7, which is characterized in that

The bracket is fixed by screw component (123,124) respectively in the positioning region and the fixed part,

The screw component is individually fixed in the positioning region and the fixed part via the bracket and second covering part.

9. Delevoping cartridge described according to claim 1~any one of 8, which is characterized in that

Described sleeve pipe component covers the second direction side end of the developing gear.

10. Delevoping cartridge according to claim 9, which is characterized in that

Further include: developer replenishing phosphor bodies (52) are configured to supply developer to the developer carrying phosphor bodies, and constitute To rotate centered on second axis (A2) relative to the framework, the first direction is configured at relative to first wall Side；And

Supply gear (86) is configured to centered on the second axis integrally rotate with the developer replenishing phosphor bodies, It is configured at the second direction side relative to first wall,

The gear part of the shaft coupling is configured to transmit driving force to the supply gear and the developing gear respectively,

The distance between the rotation axis of the shaft coupling gear and the first axle (D1) and the rotation axis with it is described The distance between second axis (D2) is roughly the same length.

11. Delevoping cartridge according to claim 1, which is characterized in that

The rotary part is along first axle direction extension and the second direction side end is configured at than described First wall leans on the rotary shaft of the second direction side,

Described sleeve pipe component covers the second direction side end of the rotary shaft.