CN204302659U - photoreceptor cartridge - Google Patents

Abstract

A kind of photoreceptor cartridge, is characterized in that having: photosensitive drums, rotates around the axis extended along the 1st direction; And housing, photosensitive drums be supported for and can rotate, housing has: opening, along the 1st direction, the side face of photosensitive drums is exposed, and passes through for the recording medium transferred with the developer picture in photosensitive drums; And ways, be arranged in the sense of rotation end of downstream side of the photosensitive drums of opening and be positioned at the end of the opening on the 1st direction, ways have by the recording medium by opening in the sense of rotation of photosensitive drums towards the spigot surface that the upstream side of opening guides, the cross section orthogonal with the 1st direction of ways is general triangular, cross section has: the 1st limit, extends along conveyance direction; 2nd limit, extends from the 1st limit towards the sense of rotation upstream of photosensitive drums; And the 3rd limit, relative with by the recording medium that transports, connect the 1st limit and the 2nd limit, and form spigot surface, the length on the 1st limit is longer than the length on the 2nd limit.

Description

Photoreceptor cartridge

Technical field

The utility model relates to the photoreceptor cartridge being configured to be installed to the image processing system adopting electrofax mode.

Background technology

As being configured to the photoreceptor cartridge being installed to the image processing system adopting electrofax mode, the known photoreceptor cartridge with the housing of photosensitive drums and support photosensitive drums.Recording medium passes through photosensitive drums transfer printing developer picture when passing through in housing.

As such photoreceptor cartridge, the known bulging box with the flank in the conveyance direction downstream being more positioned at recording medium at housing than photosensitive drums.Flank is positioned at the both ends of housing on the direction of principal axis of photosensitive drums, and when observing photosensitive drums from the conveyance direction downstream of recording medium, is positioned at the position overlapping with the direction of principal axis both ends of photosensitive drums.By photosensitive drums, after being transferred to paper as the toner image of developer picture, paper is transported by the below of flank.Afterwards, sheet carrying is until fixation unit.Further, the toner image of the upstream-side-end of the conveyance direction on paper is fixed by fixation unit.Now, counter-force is applied to paper, the situation that the end of downstream side that therefore there is the conveyance direction of paper tilts.Now, paper abuts with flank, and the shake of paper is suppressed.In addition, the end in the direction orthogonal with conveyance direction of paper abuts with flank, therefore paper bending and abutting with housing gradually.Therefore, when paper abuts with housing, the impact that paper is applied can be weakened.Consequently, paper (for example, referring to patent documentation 1) can stably be transported.

Prior art document

Patent documentation

Patent documentation 1: Japanese Unexamined Patent Publication 2011-133759 publication

Utility model content

But, in the bulging box that above-mentioned patent documentation 1 is recorded, when the direction of principal axis of photosensitive drums is observed, the bearing surface abutted with paper in flank relative to the conveyance direction of paper with large angular slope.Therefore, the situation of bending is there is when the upstream-side-end of the conveyance direction of paper abuts with flank.

Therefore, the purpose of this utility model is, provides a kind of photoreceptor cartridge, stably can transport recording medium, and recording medium can be suppressed to bend.

(1) to achieve these goals, photoreceptor cartridge of the present utility model has: photosensitive drums, is configured to rotate around the axis extended along the 1st direction, and is configured to bearing developer picture; And housing, photosensitive drums is supported for and can rotates.Housing has: opening, along the 1st direction, the side face of photosensitive drums is exposed, and passes through for the recording medium transferred with the developer picture in photosensitive drums; And ways, be arranged in the sense of rotation end of downstream side of the photosensitive drums of opening and be positioned at the end of the opening on the 1st direction, and being positioned at and observing the position overlapping with photosensitive drums from the conveyance direction of recording medium.Ways have by the recording medium by opening in the sense of rotation of photosensitive drums towards the spigot surface that the upstream side of opening guides, the cross section orthogonal with the 1st direction of ways is general triangular.Ways has: the 1st limit, extends along conveyance direction; 2nd limit, extends from the 1st limit towards the sense of rotation upstream of photosensitive drums; And the 3rd limit, relative with by the recording medium that transports, connect the 1st limit and the 2nd limit, and form spigot surface, the length on the 1st limit is longer than the length on the 2nd limit.

According to such structure, housing has ways, this ways is arranged in the sense of rotation end of downstream side of the photosensitive drums of opening and is positioned at the end of the opening on the 1st direction, and is positioned at and observes the position overlapping with photosensitive drums from the conveyance direction of recording medium.Ways have by the recording medium by opening in the sense of rotation of photosensitive drums towards the spigot surface that the upstream side of opening guides.

Therefore, when recording medium is by opening, by the spigot surface of ways, the upstream side of recording medium to the opening in the sense of rotation of photosensitive drums can be guided.

Consequently, decrease the shake of the recording medium in conveyance, stably can transport recording medium.

In addition, the cross section orthogonal with the 1st direction of ways is general triangular, and ways has: the 1st limit, extends along conveyance direction; 2nd limit, extends from the 1st limit to the sense of rotation upstream of photosensitive drums; And the 3rd limit, relative with the recording medium of conveyance, connect the 1st limit and the 2nd limit and formation spigot surface.The length on the 1st limit is longer than the length on the 2nd limit.

Therefore, when the conveyance direction end of downstream side of recording medium abuts with ways, recording medium can be made to abut with ways gradually.

Consequently, the situation that recording medium can be suppressed to bend because abutting with ways.

(2) in addition, also can be that spigot surface tilts in the mode of the transport path along with the downstream towards conveyance direction close to recording medium, further, spigot surface with on the 1st direction along with the center side towards photosensitive drums from the transport path of recording medium away from mode tilt.

According to such structure, spigot surface tilts in the mode of the transport path along with the downstream towards conveyance direction close to recording medium.

Therefore, when transporting recording medium, by the spigot surface of ways, recording medium can be guided to transport path.

In addition, spigot surface with on the 1st direction along with the center side towards photosensitive drums from the transport path of recording medium away from mode tilt.

Therefore, when making recording medium abut with ways, recording medium with along with the center side towards the 1st direction away from transport path, the mode along with the end side towards the 1st direction towards transport path side tilts.

Consequently, when recording medium abuts with housing, recording medium can be made to abut with housing gradually.Therefore, when paper abuts with housing, the impact that paper is applied can be weakened.

That is, spigot surface tilts in the mode of the transport path along with the downstream towards conveyance direction close to recording medium, and with on the 1st direction along with the center side towards photosensitive drums from the transport path of recording medium away from mode tilt.Therefore, by the spigot surface of ways, recording medium can be guided towards transport path, and weaken the impact that paper is applied simultaneously.

Consequently, the situation that can recording medium be suppressed further to bend because abutting with ways.

(3) also can be in addition, that also there is the charged device being configured to make photosensitive drums charged.Also can be that housing also has support belt electrical equipment and the charged device support portion of the surrounding of cover tape electrical equipment.Also can be that charged device support portion is located at position adjacent with opening in downstream relative to opening in the sense of rotation of photosensitive drums.Also can be the downstream being positioned at conveyance direction at least partially relative to photosensitive drums of charged device support portion.Also can be that the conveyance direction end of downstream side extension of ways is until the conveyance direction end of downstream side of charged device support portion.

According to such structure, the conveyance direction end of downstream side of ways extends to the conveyance direction end of downstream side of charged device support portion.

Therefore, even when charged device support portion produces electrostatic, also recording medium can be suppressed to the situation of charged device support portion side movement by ways.

(4) in addition, also can be ways be positioned in conveyance direction at least partially from the center of photosensitive drums than the diameter of photosensitive drums further from position.

According to such structure, the area of the spigot surface of ways can be increased.

Consequently, more stably recording medium can be transported.

(5) in addition, also can be ways be positioned at least partially relative to imaginary line from the center of photosensitive drums to the transport path side of recording medium than the half of the radius of photosensitive drums further from position, above-mentioned imaginary line is by the center of photosensitive drums and extend along conveyance direction.

According to such structure, the area of the spigot surface of ways can be increased.

Consequently, more stably recording medium can be transported.

(6) in addition, also can be that photoreceptor cartridge can be installed on apparatus main body with departing from, this apparatus main body has main body side guide, aforementioned body side guide piece is for being guided through the transfer printing of photosensitive drums and being formed with the recording medium of developer picture, ways is when being installed on apparatus main body, with on the 1st direction and this two upright 2nd direction of handing over of conveyance direction, compare main body side guide and be positioned at photosensitive drums side.

According to such structure, under the state that photoreceptor cartridge is installed on apparatus main body, on the 2nd direction, ways more leans on photosensitive drums side than main body side guide.

Therefore, under the state that photoreceptor cartridge is installed on apparatus main body, by ways, the recording medium being positioned at light sensitivity drum side suitably can be guided to conveyance direction.

(7) in addition, also can be spigot surface when observing from the 1st direction, relative to being more than 45 ° with the 1st direction and this two upright the 2nd direction angulation handed over of conveyance direction.

According to such structure, spigot surface slowly can be tilted relative to conveyance direction.

Therefore, it is possible to suppress the situation that recording medium bends because abutting with ways further.

In photoreceptor cartridge of the present utility model, stably can transport recording medium, and suppress the situation of recording medium bending simultaneously.

Accompanying drawing explanation

Fig. 1 is the sectional view of the bulging box of the embodiment represented as photoreceptor cartridge of the present utility model.

Fig. 2 is the central cross sectional view of the image processing system being provided with the bulging box shown in Fig. 1.

Fig. 3 is the use of the vertical view of the process cartridge of the bulging box shown in Fig. 1.

Fig. 4 is the upward view of the process cartridge shown in Fig. 3.

Fig. 5 is the rear view of the process cartridge shown in Fig. 3.

Fig. 6 be represent the process cartridge shown in Fig. 3 is installed to apparatus main body state under the cut-open view of process cartridge periphery.

Label declaration

1 drum box

2 photosensitive drums

12 apparatus main bodies

31 drum frames

37 rear walls

42 ADF openings

50 wayss

52 lower surfaces

Embodiment

1. rouse the outline of box

In the following description, when mentioning the direction of bulging box 1, being upper and lower benchmark by drum box 1 along the state that level loads.That is, being top above the paper of Fig. 1, is below below paper.In addition, the paper right of Fig. 1 is front, and the paper left of Fig. 1 is rear.In addition, to rouse box 1 from forward observation be the benchmark of left and right time.That is, the paper of Fig. 1 is nearby left, and paper depth is right.In addition, left and right directions is an example in the 1st direction, and above-below direction is an example in the 2nd direction, and fore-and-aft direction is an example in the 3rd direction.

As shown in Figure 1, as the bulging box 1 of an example of photoreceptor cartridge have top view roughly shaped as frame have underframe shape.Drum box 1 has photosensitive drums 2, the corona type charged device 3 being with grid and transfer roll 4.

Photosensitive drums 2 is rotatably supported in the rearward end of bulging box 1.

Corona type charged device 3 with grid is positioned at the position spaced apart with photosensitive drums 2 at the rear of photosensitive drums 2.

Transfer roll 4 is positioned at the below of photosensitive drums 2.Transfer roll 4 contacts with the bottom of photosensitive drums 2.

2. rouse the use-pattern of box

As shown in Figure 2, rouse box 1 be installed on image processing system 11 and use.

Image processing system 11 is monochrome printers of electrofax mode.Image processing system 11 has apparatus main body 12, process cartridge 13, scanning element 14 and fixation unit 15.

Apparatus main body 12 is formed as roughly boxed-section shape.Apparatus main body 12 has peristome 16, protecgulum 17, paper supply tray 18, discharge tray 19.

Peristome 16 is positioned at the leading section of apparatus main body 12.Peristome 16 is communicated with in the longitudinal direction by inside and outside apparatus main body 12, to allow passing through of process cartridge 13.

Protecgulum 17 is positioned at the leading section of apparatus main body 12.Protecgulum 17 extends along above-below direction, with its bottom for fulcrum, is supported in the antetheca of apparatus main body 12 swingably.Protecgulum 17 is configured to make peristome 16 open wide or close.

Paper supply tray 18 is positioned at the bottom of apparatus main body 12.Paper supply tray 18 is configured to collecting paper P.

Discharge tray 19 is positioned at the rear side half of the upper wall of apparatus main body 12.Discharge tray 19 caves in downwards from the upper surface of apparatus main body 12, to load paper P.

Process cartridge 13 is contained in the above-below direction substantial middle of apparatus main body 12.Process cartridge 13 is configured to install relative to apparatus main body 12 via peristome 16 or depart from.Process cartridge 13 has above-mentioned bulging box 1 and Delevoping cartridge 20.

Delevoping cartridge 20 is installed on bulging box 1 at the rear of photosensitive drums 2.Delevoping cartridge 20 has developer roll 21, donor rollers 22, thickness limiting scraper 23 and toner resettlement section 24.

Developer roll 21 is rotatably supported in the rearward end of Delevoping cartridge 20.Developer roll 21 contacts with the leading section of photosensitive drums 2.

Donor rollers 22 is positioned at the front lower place of developer roll 21.Donor rollers 22 is rotatably supported in Delevoping cartridge 20.The front lower ends contact of donor rollers 22 and developer roll 21.

Thickness limiting scraper 23 is positioned at the front upper place of developer roll 21.Thickness limiting scraper 23 contacts with the leading section of developer roll 21.

Toner resettlement section 24 is positioned at the front of donor rollers 22 and thickness limiting scraper 23.Toner resettlement section 24 is configured to accommodate toner.Toner resettlement section 24 has stirrer 25.

Stirrer 25 is rotatably supported in toner resettlement section 24.

Scanning element 14 is positioned at the top of process cartridge 13.Scanning element 14 is configured to penetrate laser beam based on view data to photosensitive drums 2.

Fixation unit 15 is positioned at the rear of process cartridge 13.The backer roll 27 that fixation unit 15 has warm-up mill 26 and crimps with the posterior end portion of warm-up mill 26.

If image processing system 11 starts image and forms action, then the corona type charged device 3 with grid makes the surface uniform of photosensitive drums 2 charged.Scanning element 14 makes the surface of photosensitive drums 2 expose.Thus, the surface of photosensitive drums 2 is formed at based on the electrostatic latent image of view data.

In addition, the toner in stirrer 25 agitation of toner resettlement section 24 and be supplied to donor rollers 22.The toner supplied by stirrer 25 is supplied to developer roll 21 by donor rollers 22.Now, toner frictional electrification between developer roll 21 and donor rollers 22 is positive polarity, is carried on developer roll 21.The thickness of the toner being carried on developer roll 21 is restricted to certain thickness by thickness limiting scraper 23.

Further, the toner being carried on developer roll 21 is supplied to the electrostatic latent image on photosensitive drums 2 surface.Thus, toner image carrying is in the surface of photosensitive drums 2.

Paper P, from paper supply tray 18, by the rotation of various roller, is supplied between photosensitive drums 2 and transfer roll 4 on predetermined opportunity one by one.The toner image on photosensitive drums 2 surface, when paper P passes through between photosensitive drums 2 and transfer roll 4, is transferred to paper P.

Afterwards, paper P is heated by time between warm-up mill 26 and backer roll 27 and is pressurizeed.Thus, the toner image on paper P is scheduled paper P by thermosetting.Afterwards, paper P is to discharge tray 19 ADF.

3. rouse the detailed of box

As shown in Figure 1 and Figure 3, the drum frame 31 that box 1 has the example as housing is roused.

(1) drum frame

Drum frame 31 has base frame 32 and cover frame frame 33.

Base frame 32 have top view substantially rectangular have underframe shape.Base frame 32 has pair of sidewalls 34, lower wall 35, antetheca 36, rear wall 37 integratedly.

Pair of sidewalls 34 lays respectively at the left and right directions both ends of base frame 32.Pair of sidewalls 34 has side respectively and observes substantially rectangular writing board shape.Pair of sidewalls 34 extends along fore-and-aft direction respectively.

Lower wall 35 is set up between the bottom of pair of sidewalls 34, extends along fore-and-aft direction.Lower wall 35 has the substantially rectangular writing board shape of top view.Lower wall 35 has transfer roll resettlement section 47 and paper supply opening 40.

Transfer roll resettlement section 47 is positioned at the rearward end of lower wall 35.Transfer roll resettlement section 47 has the side opened wide top and observes roughly U-shaped and the twisted plate shape extended along left and right directions.

Paper supply opening 40 is positioned at the fore-and-aft direction substantial middle of lower wall 35, and is positioned at front relative to transfer roll resettlement section 47.Paper supply opening 40 has along the through lower wall 35 of above-below direction and the top view substantially rectangular shape extended along left and right directions.Paper supply opening 40 as shown in Figure 2, allows paper supply passing through to the paper P between photosensitive drums 2 and transfer roll 4.

Antetheca 36 extends continuously and upward from the leading section of lower wall 35.Antetheca 36 has the writing board shape that substantially rectangular shape is observed in front.The left and right directions both ends of antetheca 36 and the leading section of pair of sidewalls 34 continuous.

Rear wall 37 is positioned at the back upper place of the rearward end of lower wall 35, extends along left and right directions.Rear wall 37 has the plate shape that general bent shaped is observed in side.Specifically, rear wall 37 in side is observed, with along with from top, mode downward and toward the front bends.Rear wall 37 has multiple projection 80 and multiple reinforcement flank 81.

Multiple projection 80 is rearward given prominence to from the above-below direction substantially central portion of the rear surface of rear wall 37 respectively.Multiple projection 80 extends along left and right directions respectively.Multiple projection 80 is positioned at position spaced at intervals in the lateral direction.

Multiple reinforcement flanks 81 are positioned at the front surface of rear wall 37.

Cover frame frame 33 is set up between the rearward end of pair of sidewalls 34.Cover frame frame 33 has the substantially rectangular writing board shape of top view, extends along left and right directions.Rearward end and the rear wall 37 of cover frame frame 33 are continuous.

(2) resettlement section and box resettlement section is roused

Bulging resettlement section 46 is divided by the respective rearward end of cover frame frame 33, pair of sidewalls 34, the rearward end of lower wall 35 and rear wall 37.Than more front, bulging resettlement section 46, divide box resettlement section 45 by pair of sidewalls 34, lower wall 35 and antetheca 36.Box resettlement section 45 is installed separatably and accommodates the space of Delevoping cartridge 20.Drum resettlement section 46 is positioned at the rear of box resettlement section 45, and drum resettlement section 46 is adjacent with box resettlement section 45 in the longitudinal direction.

(3) the corona type charged device of photosensitive drums, transfer roll and band grid

Above-mentioned photosensitive drums 2 and transfer roll 4 is rotatably supported between the rearward end of pair of sidewalls 34.

Photosensitive drums 2 is contained in bulging resettlement section 46.Photosensitive drums 2 between the rearward end of pair of sidewalls 34, and is positioned at the above-below direction substantially central portion of pair of sidewalls 34.Photosensitive drums 2 can rotate centered by the axis C extended along left and right directions.In addition, the diameter of photosensitive drums 2 represents with L1, and radius represents with L2.Clockwise sense of rotation R1 when photosensitive drums 2 can be observed along left surface rotates.

Transfer roll 4 is contained in the transfer roll resettlement section 47 of lower wall 35.Transfer roll 4 between the leading section of pair of sidewalls 34, and is positioned at the below of photosensitive drums 2.

Corona type charged device 3 with grid is positioned at the rearward end of cover frame frame 33.Specifically, the corona type charged device 3 of grid is with to be supported in the rearward end of cover frame frame 33.The front upper place part tegmentum framework 33 of the corona type charged device 3 with grid covers, and the back lower place part of the corona type charged device 3 of band grid is covered by rear wall 37.Cover frame frame 33 and rear wall 37 form an example of charged device support portion.

(4) ADF opening

The ADF opening 42 of the example as peristome is divided between the bottom of rear wall 37 and the rearward end of lower wall 35.That is, rear wall 37 is adjacent with ADF opening 42.

ADF opening 42 is positioned at rear relative to transfer roll resettlement section 47, extends along left and right directions.ADF opening 42, under the state of observing from the back lower place, has substantially rectangular shape.ADF opening 42 makes the roughly whole region of the side face of the back lower place of photosensitive drums 2 photosensitive drums 2 is in the lateral direction exposed.As shown in Figure 2, ADF opening 42 allows the passing through of paper P transferred with toner image.Specifically, as shown in Figure 1, pass through after between photosensitive drums 2 and transfer roll 4 at paper P, transport along the conveyance direction B towards back upper place.

(5) bellying and web

As shown in FIG. 4 and 5, there are multiple i.e. six bellyings 53 at the outer peripheral face of rear wall 37.In addition, between rear wall 37 and lower wall 35, erection has a pair web 54.

Six bellyings 53 bloat with certain thickness from the posterior end portion of rear wall 37 towards the back lower place respectively.Six bellyings 53 have substantially rectangular shape respectively under the state of observing from the back lower place.Six bellyings 53 are positioned at position spaced at intervals in the lateral direction.

As shown in Fig. 1, Fig. 4 and Fig. 5, a pair web 54 is set up between the left and right directions both ends of rear wall 37 and the left and right directions both ends of lower wall 35.A pair web 54 extends along from back upper place towards the direction of front lower place respectively, has side and observes substantially rectangular writing board shape.The rearward end of the upper end that a pair web 54 is respective and the rear wall 37 and end of left and right directions is continuous, the rearward end of the lower end that a pair web 54 is respective and the lower wall 35 and end of left and right directions is continuous.

(6) ways

(6-1) detailed construction of ways

A pair ways 50 is there is at the left and right directions both ends of rear wall 37.A pair ways 50 is outstanding towards the back lower place from the left and right directions both ends of the rear surface of rear wall 37.In other words, a pair ways 50 is arranged in the end of downstream side of the sense of rotation R1 of the photosensitive drums 2 of ADF opening 42 and left and right directions both ends.The left and right directions outward side end that a pair ways 50 is respective and the respective upper end of a pair web 54 continuous.A pair ways 50 is overlapping with the left and right directions both ends of the axis C of photosensitive drums 2 when observing from the conveyance direction of paper P respectively.A pair ways 50 has side in left and right directions and cone-shaped that top attenuates respectively.A pair ways 50 has the lower surface 52 of rear surface 51 and the example as spigot surface respectively.

The respective rear surface 51 of a pair ways 50 extends downwards from the posterior end portion of rear wall 37.The respective rear surface 51 of a pair ways 50 to have under the state of observing from rear side in the lateral direction and top view roughly triangular shape that top attenuates.The lower ora terminalis of the rear surface 51 that a pair ways 50 is respective is with along with side and mode upward tilts in left and right directions, and the upper edge of the rear surface 51 that a pair ways 50 is respective extends along left and right directions.The length L3 of the above-below direction that the length of the above-below direction of the rear surface 51 that a pair ways 50 is respective, in other words a pair ways 50 are respective is about 1/6 of the length L4 of the respective left and right directions of length, in other words a pair ways 50 of the left and right directions of the respective rear surface 51 of a pair ways 50.

The respective lower surface 52 of a pair ways 50 extends from the bottom of rear wall 37 to the back lower place.The respective lower surface 52 of a pair ways 50 to have under the state of observing from below side in the lateral direction and top view roughly triangular shape that top attenuates.The lower ora terminalis of the end edge of the lower surface 52 that a pair ways 50 is respective and the respective rear surface 51 of a pair ways 50 is continuous.The front-end edge of the lower surface 52 that a pair ways 50 is respective is with along with side and tilting towards rearward mode in left and right directions.Thus, the respective lower surface 52 of a pair ways 50 to tilt close to the mode of the transport path of paper P along with the downstream towards conveyance direction B, and with along with in left and right directions side and from the transport path of paper P away from mode tilt.The respective lower surface 52 of a pair ways 50 is more than 45 ° with the straight line angulation θ extended along above-below direction, is specifically about 60 °.

(6-2) cross section of ways

A pair ways 50 has region A respectively in the cross section orthogonal with left and right directions.Region A is the region surrounded by a pair ways 50.Region A has roughly triangular shape.Region A just diminishes along with in left and right directions.

Region A has the 1st limit A1, the 2nd limit A2, the 3rd limit A3.

1st limit A1 extends along the direction from back upper place forward downward.That is, the 1st limit A1 extends along conveyance direction B.

2nd limit A2 extends downwards from the rear end of the 1st limit A1.The upper end of the 2nd limit A2 and the rear end of the 1st limit A1 continuous.The length of the 2nd limit A2 is the length of the above-below direction of the respective rear surface 51 of a pair ways 50.2nd limit A2 and the 1st limit A1 angulation are acute angle.

3rd limit A3 extends from the lower end forward upward of the 2nd limit A2.The front end of the 3rd limit A3 and the front end of the 1st limit A1 are continuous, the rear end of the 3rd limit A3 and the lower end of the 2nd limit A2 continuous.The length of the 3rd limit A3 is from the length the direction of the back lower place forward upward of the respective lower surface 52 of a pair ways 50.3rd limit A3 and the 2nd limit A2 angulation are acute angle.3rd limit A3 and the 1st limit A21 angulation are acute angle.

The length of the 1st limit A1 is longer than the length of the 2nd limit A2, roughly identical with the length of the 3rd limit A3.The length of the 2nd limit A2 is shorter than the length on the 3rd limit.

1st limit A1 is specifically the distance of the front end of multiple projections 80 to the 3 limit A3 from rear wall 37.In addition, the 2nd limit A2 is specifically the distance of the rear end of multiple projections 80 to the 3 limit A3 from rear wall 37, in addition, is the distance from the respective lower end of multiple projections 80 to a pair ways 50 of rear wall 37.

(6-3) position relationship of ways and photosensitive drums

As shown in Figure 1, the rear upper end that a pair ways 50 is respective be positioned on conveyance direction B from the axis C of photosensitive drums 2 than photosensitive drums 2 diameter L1 further from position.Specifically, the imaginary line extended by the axis C of photosensitive drums 2 and along conveyance direction B and be about 1.1 times of the length of the diameter L1 of photosensitive drums 2 to the respective distance of top ends of a pair ways 50 and the length of imaginary line D.In addition, the respective bottom of a pair ways 50 relative to imaginary line D, the transport path side being located at paper P than the radius L2 of photosensitive drums 2 half further from position.Specifically, on the direction orthogonal with imaginary line D, the bottom respective from a pair ways 50 is longer than the half of the radius L2 of photosensitive drums 2 to the distance L5 of the axis C of photosensitive drums 2.

4. Delevoping cartridge is detailed

As shown in Fig. 3 and Fig. 6, Delevoping cartridge 20 has developing frame 60.Developing frame 60 has roughly boxed-section shape.Above-mentioned developer roll 21 is partly supported for rotatable by developing frame 60 in the wings.The rearward end of developing frame 60 is rearward opened wide.Thus, in Delevoping cartridge 20, the rearward end of developer roll 21 is exposed.

5. rouse the installation of box to apparatus main body

As shown in Figure 2 and 6, at drum box 1 in the installation exercise of apparatus main body 12, first operator installs Delevoping cartridge 20 in the box resettlement section 45 of drum box 1.Thus, the developer roll 21 of Delevoping cartridge 20 abuts with the photosensitive drums 2 of drum box 1, forms process cartridge 13.

Further, operator makes protecgulum 17 open wide, and via peristome 16, process cartridge 13 is installed to apparatus main body 12.

Now, there is main body side guide 70 and gas outlet 85 at the rear of process cartridge 13.

Main body side guide 70 is positioned at position spaced apart in the below of a pair ways 50.Main body side guide 70 roughly extends along fore-and-aft direction.The rearward end of main body side guide 70 is positioned at position spaced apart in the front of fixation unit 15.In addition, a pair ways 50 more leans on photosensitive drums 2 side than main body side guide 70 in the vertical direction.

Gas outlet 85 is between process cartridge 13 and fixation unit 15.Gas outlet 85 has the opposite wall 86 extended along above-below direction.Opposite wall 86 is positioned at the front part of gas outlet 85.

Process cartridge 13 is under the state being installed to apparatus main body 12, relative with the opposite wall 86 of gas outlet 85.Specifically, multiple projections 80 of rousing the rear wall 37 of box 1 are configured to the opposite wall 86 of gas outlet 85 close.Thereby, it is possible to suppress paper P to enter between the opposite wall 86 of gas outlet 85 and multiple projections 80 of drum box 1.

6. the conveyance of paper

As mentioned above, paper P on predetermined opportunity one by one to paper supply between photosensitive drums 2 and transfer roll 4.Specifically, paper P by drum box 1 paper supply opening 40 after, to paper supply between photosensitive drums 2 and transfer roll 4.

Further, by between photosensitive drums 2 and transfer roll 4 transferred with the paper P of toner image by after ADF opening 42, by between a pair ways 50 and main body side guide 70.Paper P is rearward guided by a pair ways 50 and main body side guide 70.

Now, the situation that the conveyance direction upstream-side-end that there is paper P abuts with a pair ways 50 respectively.The respective lower surface 52 of a pair ways 50 tilts in the mode diminished with the straight line angulation extended along horizontal direction, and the lower surface 52 that therefore the conveyance direction upstream-side-end of paper P is respective with a pair ways 50 abuts with little angle.Therefore, inhibit the situation that the conveyance direction upstream-side-end of paper P bends.

Afterwards, to be fixed unit 15 fixing for the toner image of the conveyance direction upstream-side-end of paper P.Now, apply counter-force to paper P, therefore the end of downstream side of the conveyance direction of paper P tilts sometimes.Now, the lower surface 52 that paper P is respective with a pair ways 50 abuts and the situation of shaking is suppressed.In addition, the left and right directions both ends of the paper P lower surface 52 respective with a pair ways 50 abuts, and therefore paper P is bending and abut with drum box 1 gradually.Therefore, when paper P abuts with drum box 1, the impact that paper P is applied can be weakened.

7. action effect

(1) according to this drum box 1, as shown in Figure 4, drum frame 31 is arranged in the both ends of the end of downstream side of the sense of rotation R1 of the photosensitive drums 2 of ADF opening 42 and the ADF opening 42 on left and right directions, and has from the conveyance direction B observation of paper P a pair ways 50 overlapping with the both ends of the axis C of photosensitive drums 2.A pair ways 50 has the lower surface 52 will guided to the upstream side of the sense of rotation R1 of photosensitive drums 2 by the paper P of ADF opening 42 respectively.

Therefore, when paper P is by ADF opening 42, by the lower surface 52 that a pair ways 50 is respective, paper P can be guided to the upstream side of the sense of rotation R1 of photosensitive drums 2.

Consequently, decrease the shake of the paper P in conveyance, can stably transport paper P.

In addition, the cross section orthogonal with left and right directions of a pair ways 50 is general triangular, has: the 1st limit A1 extended along conveyance direction B; The 2nd limit A2 extended to the sense of rotation upstream of photosensitive drums 2 from the 1st limit A1; And relative with the paper P of conveyance, connect the 1st limit A1 and the 2nd limit A2 and the 3rd limit A3 of formation lower surface 52.The length of the 1st limit A1 is longer than the length of the 2nd limit A2.

Therefore, when the end of downstream side of conveyance direction B abuts with a pair ways 50 respectively, paper P lower surface 52 respective with a pair ways 50 gradually can be made to abut.

Consequently, can suppress because paper P abuts and situation about bending with a pair ways 50 respectively.

(2) lower surface 52 that according to this drum box 1, as shown in Figure 1, a pair ways 50 is respective is to tilt close to the mode of the transport path of paper P along with the downstream towards conveyance direction B.

Therefore, when transporting paper P, by the lower surface 52 that a pair ways 50 is respective, paper P can be guided towards transport path.

In addition, the lower surface 52 that a pair ways 50 is respective with in the lateral direction along with the center side towards photosensitive drums 2 from the transport path of paper P away from mode tilt.

Therefore, when making paper P abut with a pair ways 50 respectively, paper P with along with the center side towards left and right directions from transport path away from, tilt towards the mode of transport path side along with the end side towards left and right directions.

Consequently, when paper P abuts with drum frame 31, paper P can be made to abut with drum frame 31 gradually.Therefore, when paper P abuts with drum frame 31, the impact that paper P is applied can be weakened.

Namely, the respective lower surface 52 of a pair ways 50 to tilt close to the mode of the transport path of paper P along with the downstream towards conveyance direction B, and with along with in the lateral direction towards photosensitive drums 2 center side and from the transport path of paper P away from mode tilt.Therefore, by the lower surface 52 that a pair ways 50 is respective, paper P can be guided to transport path, weaken the impact that paper P is applied simultaneously.

Consequently, paper P can be suppressed further because abutting and situation about bending with a pair ways 50.

(3) according to this drum box 1, as shown in Figure 1, the rearward end of the lower surface 52 that a pair ways 50 is respective extends to the rearward end of rear wall 37.

Therefore, even if when rear wall 37 produces electrostatic, also paper P can be suppressed to the situation of rear wall 37 side movement by each of a pair ways 50.

(4) rearward end that according to this drum box 1, as shown in Figure 1, a pair ways 50 is respective be positioned on conveyance direction B from the axis C of photosensitive drums 2 than photosensitive drums 2 diameter L1 further from position.

Therefore, it is possible to increase the area of the respective lower surface 52 of a pair ways 50.

Consequently, paper P can more stably be transported.

(5) according to this drum box 1, as shown in Figure 1, the respective bottom of a pair ways 50 with respect to the axis C of photosensitive drums 2 and the imaginary line D extended along conveyance direction B, the transport path side being located at paper P than the radius L2 of photosensitive drums 2 half further from position.

Therefore, it is possible to increase the area of the respective lower surface 52 of a pair ways 50.

Consequently, paper P can more stably be transported.

(6) according to this drum box 1, as shown in Figure 6, under the state that drum box 1 is installed on apparatus main body 12, in the vertical direction, a pair ways 50 lays respectively at than main body side guide 70 more by photosensitive drums 2 side.

Therefore, under the state that drum box 1 is installed on apparatus main body 12, the paper P of photosensitive drums 2 side can be positioned at by each guide properly of a pair ways 50.

(7) according to this drum box 1, as shown in Figure 1, the respective lower surface 52 of a pair ways 50 is more than 45 ° with the straight line angulation θ extended along above-below direction, is specifically about 60 °.

Therefore, it is possible to the lower surface 52 making a pair ways 50 respective relative to horizontal direction tilts lentamente.

Consequently, paper P can be suppressed further because abutting and situation about bending with each of a pair ways 50.

Claims (12)

1. a photoreceptor cartridge, is characterized in that, has:

Photosensitive drums, is configured to rotate around the axis extended along the 1st direction, and is configured to bearing developer picture; And

Housing, is supported for can rotates above-mentioned photosensitive drums,

Above-mentioned housing has:

Opening, makes the side face of above-mentioned photosensitive drums expose along above-mentioned 1st direction, passes through for the recording medium transferred with the developer picture in above-mentioned photosensitive drums; And

Ways, is arranged in the sense of rotation end of downstream side of the above-mentioned photosensitive drums of above-mentioned opening and is positioned at the end of the above-mentioned opening on above-mentioned 1st direction, and is positioned at and observes the position overlapping with above-mentioned photosensitive drums from the conveyance direction of aforementioned recording medium,

Above-mentioned ways have by the recording medium by above-mentioned opening in the sense of rotation of above-mentioned photosensitive drums towards the spigot surface that the upstream side of above-mentioned opening guides,

The cross section orthogonal with above-mentioned 1st direction of above-mentioned ways is general triangular,

Above-mentioned cross section has:

1st limit, extends along above-mentioned conveyance direction;

2nd limit, extends from above-mentioned 1st limit towards the sense of rotation upstream of above-mentioned photosensitive drums; And

3rd limit, relative by the recording medium transported with above-mentioned, connect above-mentioned 1st limit and above-mentioned 2nd limit, and form above-mentioned spigot surface,

The length on above-mentioned 1st limit is longer than the length on above-mentioned 2nd limit.

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

Above-mentioned spigot surface tilts in the mode along with the downstream towards above-mentioned conveyance direction close to the transport path of recording medium, and,

Above-mentioned spigot surface with on above-mentioned 1st direction along with the center side towards above-mentioned photosensitive drums from the transport path of recording medium away from mode tilt.

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

Also there is the charged device being configured to make above-mentioned photosensitive drums charged,

Above-mentioned housing also has the above-mentioned charged device of support and covers the charged device support portion of the surrounding of above-mentioned charged device,

Above-mentioned charged device support portion is located at position adjacent with above-mentioned opening in downstream relative to above-mentioned opening in the sense of rotation of above-mentioned photosensitive drums,

The downstream being positioned at above-mentioned conveyance direction at least partially relative to above-mentioned photosensitive drums of above-mentioned charged device support portion,

The above-mentioned conveyance direction end of downstream side of above-mentioned ways extends until the above-mentioned conveyance direction end of downstream side of above-mentioned charged device support portion.

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

Above-mentioned ways be positioned in above-mentioned conveyance direction at least partially from the center of above-mentioned photosensitive drums than the diameter of above-mentioned photosensitive drums further from position.

5. photoreceptor cartridge according to claim 1, is characterized in that,

Above-mentioned ways be positioned at least partially relative to imaginary line from the center of above-mentioned photosensitive drums to the transport path side of recording medium than the half of the radius of above-mentioned photosensitive drums further from position, above-mentioned imaginary line is by the center of above-mentioned photosensitive drums and extend along above-mentioned conveyance direction.

6. photoreceptor cartridge according to claim 1, is characterized in that,

Above-mentioned photoreceptor cartridge can be installed on apparatus main body with departing from, and this apparatus main body has main body side guide, aforementioned body side guide piece for being guided through the transfer printing of above-mentioned photosensitive drums and being formed with the recording medium of developer picture,

Above-mentioned ways, when being installed on said apparatus main body, with on above-mentioned 1st direction and this two upright 2nd direction of handing over of above-mentioned conveyance direction, being compared aforementioned body side guide piece and is positioned at above-mentioned photosensitive drums side.

7. photoreceptor cartridge according to claim 1, is characterized in that,

Above-mentioned spigot surface when observing from above-mentioned 1st direction, relative to being more than 45 ° with this two upright the 2nd direction angulation handed over of above-mentioned 1st direction and above-mentioned conveyance direction.

8. photoreceptor cartridge according to claim 1, is characterized in that,

Also there is the transfer roll contacted with above-mentioned photosensitive drums.

9. photoreceptor cartridge according to claim 8, is characterized in that,

Above-mentioned housing have from above-mentioned 1st direction observe along above-mentioned transfer roll and above-mentioned photosensitive drums arrangement direction extend and with above-mentioned ways continuous print wall portion,

Above-mentioned wall portion has and to extend along above-mentioned 1st direction and to outstanding with the direction that this wall portion is intersected raised.

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

Also there is the charged device being configured to make the surface of above-mentioned photosensitive drums charged,

Above-mentioned wall portion has multiple flank at the mask relative with above-mentioned charged device.

11. photoreceptor cartridges according to claim 8, is characterized in that,

The length of the above-mentioned ways on above-mentioned 1st direction is longer than the length of the above-mentioned ways on the direction of above-mentioned transfer roll and the arrangement of above-mentioned photosensitive drums.

12. photoreceptor cartridges according to claim 9, is characterized in that,

The length of the above-mentioned ways on the direction of above-mentioned transfer roll and the arrangement of above-mentioned photosensitive drums is 1/6 of the length of the above-mentioned ways on above-mentioned 1st direction.