CN104520773A - Cartridge - Google Patents

Abstract

Provided is a cartridge provided with a guide section that can stably guide a recording medium with respect to the facing section of an image carrier body and a transfer member. At a drum cartridge (18), which has a photosensitive drum (20) and a transfer roller (21), are formed: a first guide (65) disposed at the transfer roller (21) side; and a second guide (74) disposed at the photosensitive drum (20) side and facing the first guide (65) leaving a gap therebetween. The first guide (65) and the second guide (74) are formed as guide sections (79), and guide paper (S) to the nipping section (46) of the transfer roller (21) and the photosensitive drum (20).

Description

Box

Technical field

The present invention relates to a kind of box be arranged on the image processing systems such as laser printer.

Background technology

As image processing system, there will be a known a kind of printer, this printer has the detachable box kept photoconductor drum and transfer roll.

As the box be detachably located on this printer, propose a kind of processing unit comprising photoreceptor cartridge and Delevoping cartridge (such as, with reference to patent documentation 1), this photoreceptor cartridge keeps photoconductor drum and transfer roll, this Delevoping cartridge keeps developer roll, and is detachably located on photoreceptor cartridge.

Further, in this processing unit, at the throughput direction upstream side of the counterpart of photoconductor drum and transfer roll, the transport path for paper being directed to counterpart is formed with.

Patent documentation 1: Japanese Unexamined Patent Publication 2000-267549 publication

Summary of the invention

Invent problem to be solved

But in the processing unit described in above-mentioned patent documentation 1, transport path is formed by the lower surface of the upper surface of the diapire of photoreceptor cartridge and the diapire of Delevoping cartridge.

Therefore, transport path is combined by photoreceptor cartridge and Delevoping cartridge and is formed in processing unit.

As this processing unit, when forming transport path by combination all parts, precision can not form transport path well because combining the tolerance that produces, sometimes producing the unfavorable condition can not stablizing conveying paper.

Therefore, the object of the present invention is to provide a kind of box with guide part, recording medium stably can be directed to the counterpart of image carrier and transfer member by this guide part.

For solving the means of problem

(1) to achieve these goals, box of the present invention has: the image carrier of bearing developer image; Transfer member, this transfer member is relative with image carrier, and by developer image on the recording medium; And guide part, the counterpart of this guide part relative image supporting body and transfer member and be located at the throughput direction upstream side of recording medium, recording medium is directed to the guide part of counterpart by this guide part.

Guide part has: the 1st guide, the transport path of the 1st guide relative record medium and near the configuration of transfer member ground; And the 2nd guide, the 2nd guide is spaced apart and relative with the 1st guide, and the transport path of relative record medium and near the configuration of image carrier ground.

According to this structure, box is formed with guide part recording medium being directed to counterpart, the 1st guide that guide part configures with having close transfer member, and near the 2nd guide that image carrier ground configures.That is, the 1st guide and the 2nd guide are formed on common box.

Therefore, be arranged on all parts with the 1st guide and the 2nd guide, and compared by situation all parts combination being formed guide part, the present invention can eliminate the error because combining the relative position produced, and thus, precision can form guide part well

Its result, can utilize the guide part that is located on box and recording medium is stably directed to counterpart.

(2) the 2nd guides also can have to the outstanding protuberance of image carrier.

According to this structure, recording medium when being directed to counterpart by guide part with the protrusions contact outstanding to image carrier of the 2nd guide.

Therefore, recording medium is directed to counterpart by from protuberance.

Consequently, the friction of recording medium and guide part can be reduced, and, can reliably by protuberance, recording medium be directed near counterpart.

In addition, owing to being directed near counterpart by protuberance by recording medium, therefore, the winding of recording medium relative image supporting body can be prevented.

(3) in addition, on the 1st guide, the recess to transfer member depression can be also formed with in the position relative with protuberance.

According to this structure, when recording medium is directed to counterpart, in the region being formed with recess, the contact area of recording medium and the 1st guide can be reduced.

Therefore, the friction of recording medium and guide part can be reduced further, and by protuberance, transfer unit is directed to counterpart.

(4) in addition, the 1st guide also can have the guidance aid being set as and being hidden in the most deep of recess.

According to this structure, recording medium, when being led by guide part, when entering the recess of the 1st guide, can make recording medium contact with guidance aid and throughput direction is corrected.

On the other hand, when recording medium is stably directed to counterpart, when by between protuberance and recess time, can not be transferred contiguously with guidance aid.

Consequently, can prevent the friction of recording medium and the 1st guide from increasing, and when recording medium enters into recess, throughput direction can be corrected by guidance aid.

(5) in addition, also can have the developer carrier of bearing developer, also have the developing cell making image carrier relative with developer carrier, developing cell is configured in the opposition side of transfer member across image carrier.

According to this structure, in box, the space can guaranteeing for arranging guide part at the throughput direction upstream side of the counterpart of transfer member and image carrier.

Therefore, guide part can be formed near counterpart, can reliably lead to recording medium.

In addition, be located on box at the 1st guide of guide part, when the 2nd guide is located on developing cell, be difficult to extended for the 2nd guide to the counterpart between image carrier and the transfer member being configured in opposition side across image carrier.

But, according to the structure forming guide part on box, due to the 1st guide and the 2nd guide can be arranged on common box, therefore, recording medium stably can be directed to counterpart.

The effect of invention

In box of the present invention, recording medium is directed to the counterpart of image carrier and transfer member by Absorbable organic halogens ground.

Accompanying drawing explanation

Fig. 1 is the sectional view being equipped with the printer of bulging box of an embodiment of the present invention.

Fig. 2 is the sectional view of the handle box shown in Fig. 1.

Fig. 3 is the stereographic map seeing the bulging box shown in Fig. 2 from lower left side.

Fig. 4 is the upward view of the bulging box shown in Fig. 2.

Fig. 5 is the stereographic map seeing the handle box shown in Fig. 2 from lower left side.

Embodiment

1. the one-piece construction of printer

As shown in Figure 1, the printer 1 being equipped with bulging box 18 of an embodiment of the present invention has the main body cover 2 of roughly box shape.

In addition, have in the main body cover 2 of printer 1: for supplying the sheet feed section 3 of paper S; And for forming the image forming part 4 of image on supplied paper S.

In addition, about printer 1 and handle box 15 (aftermentioned), when mentioning direction, direction when placing with horizontal direction is respectively benchmark, specifically, with the direction of arrow shown in each figure for benchmark.

Namely, about the fore-and-aft direction up and down in Fig. 1 of printer 1, different with the fore-and-aft direction up and down in the Fig. 2 to Fig. 5 about drum box 18 (aftermentioned), drum box 18 (aftermentioned) with on front side of it for downside before printer 1, the mode of rear side for printer 1 on rear side of it is arranged on printer 1.

(1) main body cover

Main body cover 2 is formed: for installing and removing the box peristome 5 of handle box 15 (aftermentioned); And for importing the paper peristome 6 of paper S.

Box peristome 5 is formed through along the vertical direction in the upper end of main body cover 2.

Paper peristome 6 is formed through along the longitudinal direction in the bottom of the leading section of main body cover 2.

In addition, be provided with upper cover 7 in the upper end of main body cover 2, be provided with paper supply cover cap 8 in the leading section of main body cover 2.

Upper cover 7 can with end thereafter for fulcrum and by make-position closed for box peristome 5, and be undertaken swinging (movement) by between release position open for box peristome 5.

Paper supply cover cap 8 can with its bottom for fulcrum and by the 1st closed for paper peristome 6 position, and be undertaken swinging (movement) by between the 2nd open for paper peristome 6 position.

(2) sheet feed section

Sheet feed section 3 has the paper placement section 9 on the bottom being located at main body cover 2.

Paper placement section 9 by paper peristome 6 with the ft connection of main body cover 2.

Further, under the state that paper supply cover cap 8 is configured in the 2nd position and paper peristome 6 is open, configuration paper S.More particularly, the front part of paper S is laminated in the upper surface of paper supply cover cap 8, and the rear section of paper S is laminated in paper placement section 9 by paper peristome 6 simultaneously.

In addition, sheet feed section 3 has: pick up roller 11 on the upside of the rearward end being configured in paper placement section 9; Be configured in the paper feed roller 12 of the rear side picking up roller 11; What be relatively configured in the rear side of paper feed roller 12 supplies paper washer 13; And from the paper supply passage 14 that the rearward end for paper washer 13 extends continuously upward.

(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 can be installed and removed by opposing body shell 2, when being arranged on main body cover 2, is configured in the upside of the rear section of sheet feed section 3.

Handle box 15 has: as carrying out the bulging box 18 of an example of the box formed with installing and removing by opposing body shell 2; And as relatively carrying out the Delevoping cartridge 19 of an example of the Delevoping cartridge installed and removed by this drum box 18.

Drum box 18 has: as the photosensitive drums 20 of an example of image carrier; As the transfer roll 21 of an example of transfer member; And grid-control formula corona charging device 22.

Photosensitive drums 20 is formed as long drum in left-right direction, and is rotatably located on the rear section of bulging box 18.

Transfer roll 21 is formed as the substantial cylindrical shape extended in left-right direction, and at the rear side of photosensitive drums 20, is rotatably located on the rear section of bulging box 18.Transfer roll 21 is crimped on photosensitive drums 20 from rear side.

In detail, transfer roll 21 is configured in the rear side of photosensitive drums 20 in its axle center to be positioned at downside a little mode compared to the axle center of photosensitive drums 20.In addition, transfer roll 21 lower ora terminalis compared to photosensitive drums 20 lower ora terminalis and be configured in upside.Specifically, the sharp angle that the imaginary line (not shown) of the imaginary line segment (not shown) be connected with the axle center of photosensitive drums 20 at the axle center of transfer roll 21 and along the longitudinal direction horizontal-extending is formed is about 3 °.Therefore, transfer roll 21 pressure (transfer pressure) be crimped in photosensitive drums 20 is not subject to the effect of weight of transfer roll 21.

Grid-control formula corona charging device 22 is arranged opposite at the front upper side of photosensitive drums 20 at spaced intervals.

Specifically, grid-control formula corona charging device 22 is configured to, the circumference of photosensitive drums 20 is configured on transfer roll 21 at spaced intervals, and the angle of angle that the imaginary line segment (not shown) at the imaginary line segment (not shown) connecting the axle center of photosensitive drums 20 and the axle center of transfer roll 21 and the axle center and live line 23 (aftermentioned) that are connected photosensitive drums 20 is formed is about 120 °.

In addition, grid-control formula corona charging device 22 has live line 23 and grid 24.

Live line 23 is arranged with the mode tensioning extended in left-right direction, and is arranged opposite at the front upper side of photosensitive drums 20 at spaced intervals.

Grid 24 is formed as roughly U-shaped when the open side of forward upward is seen, and is set as from rear side encirclement live line 23.

Delevoping cartridge 19 is configured in the front downside of photosensitive drums 20, and has developing frame 25.

In developing frame 25, be formed with toner reception room 26 and developing room 27 in tandem.The volume of toner reception room 26 and developing room 27 is formed as roughly the same respectively, and is communicated with by connected entrance 28.

Contain toner (developer) in toner reception room 26, before and after toner reception room, above-below direction substantially central portion is arranged with stirrer 29.That is, stirrer 29 is configured in the downside of photosensitive drums 20.

At the upper surface of the lower wall of developing room 27, be formed with donor rollers groove 30, developer roll opposite face 31 and lower film and attach face 32.

Donor rollers groove 30 is roughly semi-circular shapes of the side face along donor rollers 33 (aftermentioned), and is formed as caving in the back lower place.

Developer roll opposite face 31 is roughly circular shapes of the side face along developer roll 34 (aftermentioned), and is formed as extending rearwardly and upwardly continuously from the rearward end of donor rollers groove 30.

Lower film attaches face 32 and is formed as, and rearward extends continuously from the rearward end of developer roll opposite face 31.That is, lower film attaches the upside that face 32 is configured in developer roll opposite face 31.

In addition, lower film attaching face 32 is oppositely disposed the lower portion in photosensitive drums 20 in the vertical direction at spaced intervals, and lower film attaching face 32 is configured to, when projecting in the vertical direction, overlapping with the axle center of photosensitive drums 20.

In addition, developing room 27 is provided with: donor rollers 33; As the developer roll 34 of an example of developer carrier; Thickness restriction scraping blade 35; And lower film 36.

Donor rollers 33 is formed as the substantial cylindrical shape extended in left-right direction, and is rotatably located on the rear section of developing room 27 in the mode that its lower portion is configured in donor rollers groove 30.Thus, donor rollers 33 is configured in the rear side of toner reception room 26, and is configured to the height (than toner chamber 26 a little top side) roughly the same with toner reception room 26 in the vertical direction.

Developer roll 34 is formed as the substantial cylindrical shape extended in left-right direction, and is bearing in the developer roll support slot 56 (aftermentioned) of bulging box 18 by the lining 44 (with reference to Fig. 5) of the turning axle of inserting developer roll 34.Thus, developer roll 34, in the mode relative with the separated from each other compartment of terrain of developer roll opposite face 31 of the side face in its lower portion, is rotatably located on the rear section of developing room 27.

In addition, developer roll 34 is set as, and contacts from rear upside with donor rollers 33, and the upside of developer roll 34 and rear section expose from developing room 27, and downside contacts with photosensitive drums 20 in the past.That is, developer roll 34 is configured in the rear upside of donor rollers 33, and is configured in the front downside of photosensitive drums 20.Further, the axle of the axle center of donor rollers 33, the axle center of developer roll 34 and photosensitive drums 20 is centrally located at along on the roughly same straight line of photosensitive drums 20 radial direction.

In addition, developer roll 34 and the circumference of photosensitive drums 20 are configured on grid-control formula corona charging device 22 at spaced intervals, and be configured to, connect the axle center of photosensitive drums 20 and the imaginary line segment (not shown) of live line 23, the angle of the angle formed with the imaginary line segment (not shown) at the axle center at the axle center and developer roll 34 that are connected photosensitive drums 20 is about 120 °.That is, developer roll 34, grid-control formula corona charging device 22 and transfer roll 21 separate respectively and equally spaced configure in the circumference of photosensitive drums 20.

The upper end of thickness restriction scraping blade 35 is fixed in the rearward end of developing room 27 upper wall, and the bottom of thickness restriction scraping blade 35 contacts from front side with developer roll 34.

The rear section of lower film 36 is fixed on lower film and attaches on face 32, the leading section of lower film 36 above developer roll opposite face 31 with the circumferential contact of developer roll 34.

(3-2) scanning element

Scanning element 16 is configured in the front side of handle box 15, and relative with photosensitive drums 20 at spaced intervals in the longitudinal direction.

Scanning element 16, penetrates laser beam L towards photosensitive drums 20 based on view data, and the side face of photosensitive drums 20 is exposed.

Specifically, laser beam L rearward penetrates from scanning element 16, and the side face of the leading section of photosensitive drums 20 is exposed.That is, the exposure station (side face of photosensitive drums 20 leading section) that exposes of photosensitive drums 20, relative to photosensitive drums 20 axle center and be set in the opposition side of the clamping part 46 of an example of the counterpart contacted with transfer roll 21 as photosensitive drums 20.

Now, Delevoping cartridge 19 is configured in the downside of the injection track of laser beam L, and grid-control formula corona charging device 22 is configured in the upside of the injection track of laser beam L.

In addition, corresponding to the medial surface of the main body cover 2 between scanning element 16 and photosensitive drums 20, the guide part 37 that the mounting or dismounting of handle box 15 are led is provided with.Further, when handle box 15 departs from main body cover 2, handle box 15 is led by guide part 37, thus, is arranged on Delevoping cartridge 19 on bulging box 18 from downside to upside by the injection track of laser beam L.

Now, the various rollers (transfer roll 21, donor rollers 33 and developer roll 34) be located on handle box 15 also pass through the injection track of laser beam L from downside to upside.

(3-3) fixation unit

Fixation unit 17 is configured in the upside of the rear section of bulging box 18.Specifically, fixation unit 17 has: be configured in the warm-up mill 38 above grid-control formula corona charging device 22; And from the backer roll 39 that rear upside crimps with warm-up mill 38.

That is, warm-up mill 38 is configured near grid 24 upper end (open sides end) of grid-control formula corona charging device 22.

(4) image forms action

Toner in the toner reception room 26 of Delevoping cartridge 19 is supplied to donor rollers 33 along with the rotation of stirrer 29 via connected entrance 28, is re-supplied to developer roll 34, is positive pole between donor rollers 33 and developer roll 34 by frictional electrification.

For the toner being supplied to developer roll 34, its thickness limits scraping blade 35 along with the rotation of developer roll 34 by thickness and limits, and is made certain thickness thin layer and is carried on the surface of developer roll 34.

On the other hand, the surface of photosensitive drums 20 utilizing grid-control formula corona charging device 22 by uniform charged after exposed by scanning element 16.Thus, the side face of photosensitive drums 20 is formed the electrostatic latent image obtained based on view data.Further, the toner be carried on developer roll 34 is fed into the electrostatic latent image on photosensitive drums 20 side face, thus carries toner image (developer image) on photosensitive drums 20 side face.

The paper S being laminated in paper placement section 9 is sent to paper feed roller 12 by picking up the rotation of roller 11 and supplies between paper washer 13, and is separated one by one by the rotation of paper feed roller 12.Then, the paper S is separately transported to paper supply passage 14 by the rotation of paper feed roller 12, and is supplied to image forming part 4 (between photosensitive drums 20 and transfer roll 21) one by one with official hour.

Further, paper S is carried to upside by from downside between photosensitive drums 20 and transfer roll 21.Now, toner image is transferred on paper S, forms image.

Further, paper S is being heated by time between warm-up mill 38 and backer roll 39 and pressurizeed.Now, image is heat-fixed on paper S.

Then, paper S is transported to exit roller 40, is discharged on the discharge tray 41 being formed at main body cover 2 upper surface by exit roller 40.

So, paper S is supplied from paper placement section 9, paper S is by between photosensitive drums 20 and transfer roll 21 (clamping part 46), then, be discharged on discharge tray 41 after between warm-up mill 38 and backer roll 39, the transfer passage being seen as substantially C-shaped in this wise in side is being transferred.

2. rouse the detailed construction of box

As shown in Figures 2 and 3, drum box 18 is formed as roughly there is end rectangular frame shape, and has drum frame 48.

Drum frame 48 has: pair of right and left sidewall 49 (with reference to Fig. 3); Antetheca 50 between the leading section being erected at two side 49; The upper wall 51 of the top between the rearward end being erected at two side 49; And the lower wall 52 between the bottom being erected at two side 49.

As shown in Figure 3, two side 49 is formed as its front part and extends in front-rear direction, the roughly L-shaped shape when side that its rear section extends upward is seen.In addition, two side 49 has bulging axle inserting hole 55 and developer roll support slot 56.

Drum axle inserting hole 55 is through in left-right direction at the rear section of sidewall 49, and the circular shape when side being formed as takeing in photosensitive drums 20 turning axle 43 is seen.

Substantially rectangular shape when developer roll support slot 56 is formed as viewed from the side of rearward caving in from the rear section front-end edge of sidewall 49 between front part and rear section.Developer roll support slot 56 is formed as the lining 44 that can take in Delevoping cartridge 19.

As shown in Figures 2 and 3, it is the slab shape of substantially rectangular shape when the front that antetheca 50 is formed as extending in left-right direction is seen, and in its left and right directions substantial middle, there is handle part 58, this handle part 58 holds handle box 15 when making handle box 15 opposing body shell 2 carry out installing or departing from.

Substantially rectangular shape when what upper wall 51 was formed as extending in left-right direction overlooks, and between the upper end being erected at two side 49 rear section.

Substantially rectangular shape when what lower wall 52 was formed as extending along the longitudinal direction looks up.In addition, lower wall 52 has: for accommodating the transfer roll support 61 of transfer roll 21; And for installing the Delevoping cartridge support 62 of Delevoping cartridge 19.

Transfer roll support 61 is located in the rearward end of drum frame 48, and the side face be formed as along transfer roll 21 and roughly U-shaped when cuing open to the side that rear side bloats.As shown in Figure 2, the leading section of transfer roll support 61 configures at spaced intervals at fore-and-aft direction and Delevoping cartridge support 62, and the upper end of transfer roll support 61 configures at spaced intervals at above-below direction and upper wall 51.

Further, the open area between the leading section of transfer roll support 61 and Delevoping cartridge support 62 (being protuberance 77 described later in detail), is divided into the paper supply peristome 80 paper S being supplied to clamping part 46.Open area between the upper end of transfer roll support 61 and upper wall 51, is divided into the ADF peristome 81 of discharging paper S from clamping part 46.

As shown in Figure 3, transfer roll support 61 is formed with multiple (being six in the present embodiment) through hole 64.

Through hole 64 is formed in the front side of transfer roll support 61 in the lateral direction at spaced intervals.Through hole 64 is formed as the substantially rectangular shape of through along the vertical direction transfer roll support 61.

In addition, transfer roll support 61 has: the 1st guide 65; Multiple (being ten in the present embodiment) stiffening rib 70; And a pair the 1st plates 66.

As shown in Figure 2, the 1st guide 65 is formed as the roughly writing board shape that extends continuously from the leading section of transfer roll support 61 downwards.That is, the 1st guide 65 relatively paper S transport path and near the configuration of transfer roll 21 ground.

As shown in Figure 3, the 1st guide 65 is formed with multiple (being four in the present embodiment) recess 67.

Recess 67 separated from each other compartment of terrain configuration in the lateral direction, and the bottom being formed as the 1st guide 65 is opened, and cave in upward overlook time roughly U-shaped.That is, recess 67 is formed in the mode caved in transfer roll 21.The upper surface of recess 67 is divided into most deep 71 (with reference to Fig. 2).

In addition, the 1st guide 65 is integrally formed with multiple (being five in the present embodiment) teat 69.

Teat 69 is located at the bottom of the 1st guide 65 in separated from each other compartment of terrain in left-right direction in the mode avoiding recess 67, and forwards gives prominence to.

In addition, as shown in Figures 2 and 3, the 1st guide 65 is provided with the supporting film 68 of the example as guidance aid.

Supporting film 68 is made up of flexual film, is formed longer in left-right direction.The mode that supporting film 68 covers the 1st guide 65 front surface with the rearward end of the upper surface from teat 69 is configured.That is, supporting film 68 is configured to recess 67 to hide.In addition, the ora terminalis of the upstream side of the throughput direction along paper S of supporting film 68 is divided into the upstream extremity 68a in the rearward end of the upper surface being fixed on teat 69, and the ora terminalis in its downstream is divided into the downstream end 68b close to photosensitive drums 20 side face.

Stiffening rib 70 is formed as being the writing board shape of roughly triangular shape when side is seen, and avoid four recesses 67 being formed on the 1st guide 65 and six through holes 64 being formed on transfer roll support 61 and in the lateral direction separated from each other compartment of terrain arrange, and be configured to the rear surface of the 1st guide 65 to be connected with the lower surface of transfer roll support 61.

As shown in Figure 3, it is outstanding that the 1st plate 66 to be formed as from the both ends of transfer roll support 61 downside forward, is substantially rectangular writing board shape when side is seen.

As shown in Figure 2, the bottom of the 1st plate 66 is given prominence to downwards compared to lower wall 52.

Delevoping cartridge support 62 is spaced apart and be configured in the front side of drum frame 48 with the front side of transfer roll support 61, and its leading section is formed as the roughly writing board shape that is connected with the bottom of antetheca 50.

Delevoping cartridge support 62 is formed and holds hole 73.

As shown in Figure 3, hold the substantially central portion of hole 73 when the looking up of Delevoping cartridge support 62, be formed as the substantially rectangular shape of through along the vertical direction Delevoping cartridge support 62.

Holding hole 73 to be formed as, can hold it when drum frame 48 being placed to contrary up and down.

In addition, as shown in Figures 2 and 3, Delevoping cartridge support 62 has the 2nd guide 74 and multiple (being six in the present embodiment) the 2nd plate 75.

2nd guide 74 is formed as after rearward extending from the rearward end of Delevoping cartridge support 62, slightly to the roughly writing board shape that back upper place is bending.That is, the 2nd guide 74 is relative with the 1st guide 65 at spaced intervals in the longitudinal direction, and relatively paper S transport path and near the configuration of photosensitive drums 20 ground.

In addition, the 1st guide 65 and the 2nd guide 74 are formed on bulging box 18, form guide part 79 by the 1st guide 65 and the 2nd guide 74.

On the 2nd guide 74, be formed from the end edge of the 2nd guide 74 multiple (be in the present embodiment four) protuberance 77 outstanding to photosensitive drums 20.

Protuberance 77 is the configuration of separated from each other compartment of terrain in the lateral direction, when projecting in the longitudinal direction, is formed as position identical with each recess 67 respectively.That is, as shown in Figure 4, relative with each protuberance 77 in the longitudinal direction position is formed with each recess 67.

As shown in Figure 3, be the roughly writing board shape of substantially rectangular shape when the 2nd plate 75 is formed as viewed from the side of giving prominence to downwards from the lower surface of Delevoping cartridge support 62.Specifically, the 2nd plate 75 is arranged from separated from each other compartment of terrain outside left and right directions two ora terminalis to left and right directions holding hole 73, and is configured with four in the left side holding hole 73, is configured with two on the right side holding hole 73.

As shown in Figure 2, identically with the 1st plate 66, the bottom of the 2nd plate 75 is given prominence to downwards compared to lower wall 52.

Further, the interval between the 1st guide 65 and the 2nd guide 74 narrows along with the conveyance direction downstream side towards paper S, is configured to by the supporting film 68 that the recess of the 1st guide 65 hides, tilts along with towards conveyance direction downstream side to protuberance 77.

In addition, as mentioned above, rouse box 18 and there is photosensitive drums 20, transfer roll 21 and grid-control formula corona charging device 22.

The left and right directions both ends of the turning axle 43 extended along the central axis of photosensitive drums 20 are rotatably inserted in the bulging axle inserting hole 55 of two side 49 inside left and right directions, and thus, photosensitive drums 20 is rotatably located on bulging box 18.Thus, photosensitive drums 20 is configured to cover from top by upper wall 51.

Transfer roll 21 extends in left-right direction, and is supported to rotatable in transfer roll support 61, and a part for the side face of transfer roll 21 is exposed from the multiple through holes 64 being formed at transfer roll support 61.

Grid-control formula corona charging device 22 is embedded in the fore-and-aft direction substantially central portion of upper wall 51.

In addition, in drum box 18, Delevoping cartridge installation portion 82 is divided into by two side 49, antetheca 50, Delevoping cartridge support 62 and photosensitive drums 20.

3. the installation of handle box on main body cover

(1) installation of Delevoping cartridge on drum box

To handle box 15 be arranged on main body cover 2, then need first Delevoping cartridge 19 to be arranged on bulging box 18.

Delevoping cartridge 19 to be arranged on bulging box 18, then need Delevoping cartridge 19 to be assembled in the Delevoping cartridge installation portion 82 of bulging box 18 from upside.

In detail, the rearward end of Delevoping cartridge 19 is inserted into the rearward end of the Delevoping cartridge installation portion 82 of bulging box 18 from upside.

Further, the lining 44 of Delevoping cartridge 19 is inserted in the developer roll support slot 56 of bulging box 18.

Then, when with lining 44 for fulcrum and when making the leading section of Delevoping cartridge 19 downward side oscillation (rotation), the lower surface of Delevoping cartridge 19 abuts with the upper surface of Delevoping cartridge support 62, and the installation that Delevoping cartridge 19 rouses box 18 relatively terminates, formation processing box 15 (with reference to Fig. 5).

Now, Delevoping cartridge 19 is configured in the opposition side of transfer roll 21 in the longitudinal direction across photosensitive drums 20.

In addition, Delevoping cartridge 19 be made to depart from drum box 18, then need to operate Delevoping cartridge 19 and drum box 18 on the contrary with above-mentioned action.

So, Delevoping cartridge 19 is arranged on the Delevoping cartridge installation portion 82 of bulging box 18 dismantledly.

(2) installation of handle box on main body cover

Then, handle box 15 (being provided with the bulging box 18 of Delevoping cartridge 19) will be formed as described above be arranged on main body cover 2.

To handle box 15 be arranged on main body cover 2, then first as shown in Figure 1, as mentioned above, make the upper cover 7 of main body cover 2 be configured in release position.

Then, hold the leading section of handle box 15, handle box 15 is inserted in main body cover 2 via box peristome 5.

Further, when being pushed along guide part 37 to rear side by handle box 15, handle box 15 is inserted in main body cover 2.

According to above-mentioned, the installation of handle box 15 on main body cover 2 terminates.

4. the conveying of paper

As mentioned above, paper S is supplied to image forming part 4 with official hour one by one from paper placement section 9.

Thus, as shown in Figure 2, paper S, by contacting with the protuberance 77 of the 2nd guide 74 before clamping part 46 and is led by clamping part 46 by paper supply peristome 80 from downside to upside.Further, on paper S, by forming image by clamping part 46 transfer printing toner image.Then, paper S by ADF peristome 81, then is transported between warm-up mill 38 and backer roll 39 to upside.

On the other hand, in the conveying way of above-mentioned paper S, when paper S is partial to the 1st guide 65 side, paper S is just for entering in recess 67.

But because the supporting film 68 arranged in the mode hiding recess 67 tilts to protuberance 77, therefore, paper S is remedied to normal transport path.

5. action effect

(1) according to this bulging box 18, as shown in Figure 2, the drum frame 48 of drum box 18 is formed with the guide part 79 led to clamping part 46 by paper S, and this guide part 79 has: the 1st guide 65 configured near transfer roll 21; And near the 2nd guide 74 that photosensitive drums 20 configures.That is, the 1st guide 65 is formed on bulging box 18 together with the 2nd guide 74.

Therefore, be located on bulging box 18 and Delevoping cartridge 19 respectively compared to the 1st guide 65 and the 2nd guide 74, by drum box 18 and Delevoping cartridge 19 are combined and form the situation of guide part 79, owing to can eliminate the error of the relative position produced because of combination, therefore, precision guide part 79 can be formed well.

Consequently, the guide part 79 be located at integratedly on bulging box 18 can be utilized and paper S is stably directed to clamping part 46.

(2) in addition, according to this bulging box 18, as shown in Figure 2, paper S contacts with the protuberance 77 outstanding to photosensitive drums 20 being located at conveyance direction downstream side after contacting with the rear surface entirety of the 2nd guide 74 when being directed to clamping part 46.

Therefore, paper S is directed to clamping part 46 from protuberance 77.

Consequently, the friction of paper S and guide part 79 can be reduced, and protuberance 77 can be utilized and reliably paper S is directed near clamping part 46.

In addition, due to protuberance 77 can be utilized to be directed near clamping part 46 by paper S, therefore, paper S-phase can be prevented the winding of photosensitive drums 20.

(3) in addition, according to this bulging box 18, as shown in Figure 4, on the 1st guide 65, the recess 67 caved in transfer roll 21 is formed with in the position relative with protuberance 77.

Therefore, when paper S is directed to clamping part 46, be formed with the region of recess 67, the contact area of paper S and the 1st guide 65 can reduced.

Consequently, the friction of paper S and guide part 79 can be reduced further, and can utilize protuberance 77 that paper S is directed to clamping part 46.

(4) in addition, according to this bulging box 18, as shown in Figure 3, the 1st guide 65 has the supporting film 68 hidden in the most deep 71 of recess 67.

Therefore, even if paper S enters the recess 67 of the 1st guide when being led by guide part 79, paper S also can be made to contact with supporting film 68 and correct throughput direction.

On the other hand, when paper S is stably directed to clamping part 46, when paper S passes through between protuberance 77 and recess 67, can not be transferred contiguously with supporting film 68.

Consequently, can prevent the friction of paper S and the 1st guide 65 from increasing, even and if paper S enters recess 67, and supporting film 68 also can be utilized to correct throughput direction.

(5) in addition, according to this bulging box 18, as shown in Figure 2, have and be mounted to photosensitive drums 20 Delevoping cartridge relative with developer roll 34 19, Delevoping cartridge 19 is configured in the opposition side of transfer roll 21 across photosensitive drums 20.

Therefore, in drum box 18, at the throughput direction upstream side of clamping part 46, the space for arranging guide part 79 can be guaranteed.

Consequently, guide part 79 can be formed near clamping part 46, can reliably lead to paper S.

In addition, when being provided with the 1st guide 65 of guide part 79 on drum box 18, when Delevoping cartridge 19 is provided with the 2nd guide 74, be difficult to the 2nd guide 74 to arrange with extending to the clamping part 46 between photosensitive drums 20 and the transfer roll 21 being configured in opposition side across photosensitive drums 20.

But, if form guide part 79 on drum box 18, then owing to the 1st guide 65 can be located on bulging box 18 together with the 2nd guide 74, therefore, paper S stably can be directed to clamping part 46.

6. other embodiment

Above-mentioned bulging box 18 is embodiments for box of the present invention, and the present invention is not limited to above-mentioned embodiment.

The bulging box 18 of one embodiment of the present invention is arranged on the printer 1 as an example of image processing system, but image processing system is except above-mentioned black-and-white printer, also can be configured to color printer.

When image processing system is configured to color printer, also can be configured to the direct-type tandem type color printer with multiple photoreceptor and recording medium transfer unit, or be configured to the intermediate transfer formula tandem type color printer with multiple photoreceptor, middle transfer body and transfer member.

In addition, box of the present invention also can be configured to above-mentioned handle box 15.

In addition, handle box 15, except the divergence type that bulging box 18 as described above is separated with Delevoping cartridge 19, also can have the one-piece type of bulging box 18 and Delevoping cartridge 19 with being integrally constituted.

In addition, also photosensitive drums 20 can be set on main body cover 2, only make Delevoping cartridge 19 and main body cover 2 install and remove.

In addition, Delevoping cartridge 19 also can be configured to: collecting toner toner Cartridge be detachably arranged on there is developer roll 34 framework on.

In addition, the photoreceptors such as such as sensitive tape also can be used to replace above-mentioned photosensitive drums 20.

In addition, the developer carriers such as the roller of such as development sleeve, strip-like developing pipe, brush also can be used to replace above-mentioned developer roll 34.

In addition, also can use such as supply sleeve, supply band, brush the supply part such as roller to replace above-mentioned donor rollers 33.

In addition, the such as transfer unit such as spiral drill pipe or conveying belt also can be used to replace above-mentioned stirrer 29.

In addition, also can use the contact-type transfer member of such as transfer belt, transfer printing brush, transfer printing scraping blade, film type transfer device etc., or use the non-contact type transfer members etc. such as such as corona type, replace above-mentioned transfer roll 21.

In addition, also can use the such as non-contact type such as corona charging device, jagged discharge component charger, or use the contact-type chargers etc. such as such as charged roller, replace above-mentioned grid-control formula corona charging device 22.

In addition, the exposure components such as such as LED unit also can be used to replace above-mentioned scanning element 16.

In addition, image processing system of the present invention also can be equipped with image reading unit etc. and be configured to all-in-one multifunctional machine.

Description of reference numerals

18 drum boxes

19 Delevoping cartridges

20 photosensitive drums

21 transfer rolls

34 developer rolls

46 clamping parts

65 the 1st guides

67 recesses

68 supporting films

74 the 2nd guides

77 protuberances

79 guide parts

Claims (5)

1. a box (18), is characterized in that having:

Be configured to the image carrier (20) of bearing developer image;

Transfer member (21), this transfer member is relative with described image carrier, and is configured to by developer image on the recording medium; And

Guide part (79), the counterpart (46) of the relatively described image carrier of this guide part and described transfer member and be located at the throughput direction upstream side of described recording medium, this guide part is configured to described recording medium to be directed to described counterpart

Described guide part has:

1st guide (65), the transport path of the relatively described recording medium of the 1st guide and near described transfer member ground configuration; And

2nd guide (74), the 2nd guide is spaced apart and relative with described 1st guide, and the transport path of relatively described recording medium and near described image carrier ground configuration.

2. box as claimed in claim 1, it is characterized in that, described 2nd guide has the protuberance (77) outstanding to described image carrier.

3. box as claimed in claim 2, is characterized in that, on described 1st guide, be formed with the recess (67) caved in described transfer member in the position relative with described protuberance.

4. box as claimed in claim 3, is characterized in that, described 1st guide has the guidance aid (68) being set as and being hidden in the most deep (71) of described recess.

5. the box according to any one of Claims 1-4, it is characterized in that, described box has the developer carrier (34) being configured to bearing developer, also has and is configured to make the developing cell (19) that described image carrier is relative with described developer carrier

Described developing cell is configured in the opposition side of described transfer member across described image carrier.