CN106256735A - Image forming apparatus - Google Patents

Image forming apparatus Download PDF

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Publication number
CN106256735A
CN106256735A CN201610012019.7A CN201610012019A CN106256735A CN 106256735 A CN106256735 A CN 106256735A CN 201610012019 A CN201610012019 A CN 201610012019A CN 106256735 A CN106256735 A CN 106256735A
Authority
CN
China
Prior art keywords
guiding elements
open
orientation
image forming
forming apparatus
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201610012019.7A
Other languages
Chinese (zh)
Other versions
CN106256735B (en
Inventor
早川裕二
富冈宽满
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujifilm Business Innovation Corp
Original Assignee
Fuji Xerox Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fuji Xerox Co Ltd filed Critical Fuji Xerox Co Ltd
Publication of CN106256735A publication Critical patent/CN106256735A/en
Application granted granted Critical
Publication of CN106256735B publication Critical patent/CN106256735B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/58—Article switches or diverters
    • B65H29/60—Article switches or diverters diverting the stream into alternative paths
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/12—Delivering or advancing articles from machines; Advancing articles to or into piles by means of the nip between two, or between two sets of, moving tapes or bands or rollers
    • B65H29/125—Delivering or advancing articles from machines; Advancing articles to or into piles by means of the nip between two, or between two sets of, moving tapes or bands or rollers between two sets of rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H31/00—Pile receivers
    • B65H31/24—Pile receivers multiple or compartmented, e.d. for alternate, programmed, or selective filling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H85/00—Recirculating articles, i.e. feeding each article to, and delivering it from, the same machine work-station more than once
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/65—Apparatus which relate to the handling of copy material
    • G03G15/6555—Handling of sheet copy material taking place in a specific part of the copy material feeding path
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2220/00—Function indicators
    • B65H2220/09—Function indicators indicating that several of an entity are present
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2402/00—Constructional details of the handling apparatus
    • B65H2402/40—Details of frames, housings or mountings of the whole handling apparatus
    • B65H2402/45—Doors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2402/00—Constructional details of the handling apparatus
    • B65H2402/60—Coupling, adapter or locking means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/60—Other elements in face contact with handled material
    • B65H2404/61—Longitudinally-extending strips, tubes, plates, or wires
    • B65H2404/612—Longitudinally-extending strips, tubes, plates, or wires and shaped for curvilinear transport path
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/60—Other elements in face contact with handled material
    • B65H2404/63—Oscillating, pivoting around an axis parallel to face of material, e.g. diverting means
    • B65H2404/632—Wedge member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2601/00—Problem to be solved or advantage achieved
    • B65H2601/10—Ensuring correct operation
    • B65H2601/11—Clearing faulty handling, e.g. jams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2601/00—Problem to be solved or advantage achieved
    • B65H2601/30—Facilitating or easing
    • B65H2601/32—Facilitating or easing entities relating to handling machine
    • B65H2601/321—Access
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/03—Image reproduction devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/03—Image reproduction devices
    • B65H2801/06—Office-type machines, e.g. photocopiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Paper Feeding For Electrophotography (AREA)
  • Electrophotography Configuration And Component (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)

Abstract

The present invention provides a kind of image forming apparatus, and this image forming apparatus includes: medium transporting path, and this medium transporting path is branch at predetermined branch location, and medium along this medium transporting path with case of bending towards stack portion transmission；The open and close member of energy opening and closing, described open and close member is open so that the inside on medium direction of transfer in the upstream region of described branch location of apparatus body exposes；And there is the guiding elements of guide surface, this guide surface described medium transporting path concave side be used as described medium transporting path the first guide surface, described guiding elements is supported for so that described guiding elements can rotate between orientation and open orientation guiding, orientation is guided described, described guiding elements guides described medium, and described guiding elements guides orientation to rotate to described open orientation so that the described guide surface of described guiding elements is open from described.

Description

Image forming apparatus
Technical field
The present invention relates to image forming apparatus.
Background technology
The example of known image forming apparatus includes optional output device, and this optional output device is the most attached Being connected in the region being positioned at above apparatus body output link, optional output device includes: by sheet material output to towards The output link that faces down of lower tray；By sheet material output to towards top tray towards upper output link；By sheet material transmission The transmission path that faces down to the pallet that faces down；The face towards top tray that is sent to by sheet material is passed up path；Pallet Switching door, this pallet switching goalkeeper is sent to, along the common sheet material transmitted in path that transmits, face down transmission path or face It is passed up path (Japanese Unexamined Patent Application JP 2005-289540 publication).
Summary of the invention
Therefore, it is an object of the invention to provide one to be readily able to remove jammed sheet of paper from image forming apparatus Image forming apparatus.
According to the first aspect of the invention, it is provided that a kind of image forming apparatus, this image forming apparatus includes: medium passes Sending path, this medium transporting path is branch at predetermined branch location, and medium along this medium transporting path with curved Curved state is towards stack portion transmission；Can the open and close member of opening and closing, described open and close member is open so that being situated between of apparatus body On matter direction of transfer, the inside in the upstream region of described branch location exposes；And there is the guiding structure of guide surface Part, this guide surface described medium transporting path concave side be used as described medium transporting path the first guide surface, institute State guiding elements to be supported for, so that described guiding elements can rotate between orientation and open orientation guiding, drawing described Leading orientation, described guiding elements guides described medium, and described guiding elements guides orientation to rotate to described opening from described Orientation is so that the described guide surface of described guiding elements is open.
According to the second aspect of the invention, according in the described image forming apparatus of first aspect, described guiding elements Center of rotation be located along described medium transporting path downstream and described branch location towards described medium direction of transfer The position separated, and when described guiding elements rotates to the most described open orientation, described medium transporting path described The distance between the second guide surface of described first guide surface of the first guide surface and described medium transporting path increases Greatly.
According to the third aspect of the invention we, in the described image forming apparatus according to first aspect or second aspect, institute Stating guiding elements guides orientation to rotate to described open orientation due to the weight of described guiding elements from described.
According to the fourth aspect of the invention, according to the image forming apparatus of either side in first aspect to the third aspect also Including: it is arranged on the junction surface on described apparatus body；It is arranged on the junction surface on described guiding elements, is arranged on institute State the described junction surface on guiding elements to engage with the described junction surface being arranged on described apparatus body；And arrange Contact site on described open and close member, when described open and close member moves to closed position from release position, this contact Portion while contacting with the contact site at the described junction surface being arranged on described guiding elements relative to described guiding structure Described junction surface on part is moved.
According to the fifth aspect of the invention, according in the described image forming apparatus of fourth aspect, described guiding elements Including maintaining part, this maintaining part makes the described junction surface on described guiding elements and the described joint on described apparatus body Portion is mutually disengaged.
According to the sixth aspect of the invention, according to the image forming apparatus of either side in first aspect to the 5th aspect In, described stack portion is fixed to described apparatus body.
According to the first aspect of the invention, compared with being not provided with the situation of guiding elements that is rotatably supported, it is possible to It is easier to remove jammed sheet of paper.
According to the second aspect of the invention, can easily remove when described medium transporting path extensively relaxes by The sheet of paper blocked.
According to the third aspect of the invention we, it is possible to reliably relax described medium transporting path.
According to the fourth aspect of the invention, described guiding elements reliably connects with the described junction surface on described apparatus body Close.
According to the fifth aspect of the invention, described medium transporting path reliably can become in response to the operation that user performs Wide.
According to the sixth aspect of the invention, can prevent the medium of stacking from dropping.
Accompanying drawing explanation
The illustrative embodiments of the present invention will be described in detail, in the accompanying drawings based on figure below:
Fig. 1 is the generalized section of the internal structure illustrating image forming apparatus；
Fig. 2 is to illustrate the generalized section that the sheet material of sheet carrying device transmits path；
Fig. 3 is to show that the sheet material of sheet carrying device transmits path when going out guiding elements and being in open orientation Generalized section；
Fig. 4 is to be shown in guiding elements to be in the solid of the internal structure of sheet carrying device under the state guiding orientation Figure；
Fig. 5 is to be shown in the solid of the internal structure of sheet carrying device under the state that guiding elements is in open orientation Figure；
Fig. 6 is the generalized section illustrating such mode, in this approach, when guiding elements engages with apparatus body Time open and close member close；
Fig. 7 is the generalized section illustrating such mode, in this approach, when guiding elements does not connects with apparatus body During conjunction, open and close member is closed；
Fig. 8 is the generalized section of the state illustrating that guiding elements and open and close member engage with apparatus body；And
Fig. 9 is the generalized section illustrating such image forming apparatus, in this image forming apparatus, and open and close member Open and guiding elements is in open orientation.
Detailed description of the invention
The present invention is explained in further detail with reference to the accompanying drawings by description illustrative embodiments and embodiment.But, The invention is not restricted to described illustrative embodiments and embodiment.
It should be noted that the accompanying drawing of reference is schematic in explained below, thus such as dimension scale is not equal to Actual dimension scale.Accompanying drawing suitably eliminates the parts in addition to must explaining so that understanding.
1. the population structure of image forming apparatus and operation
Fig. 1 is the vertical cross section of the internal structure illustrating image forming apparatus 1.
Population structure and the operation of image forming apparatus 1 are described with reference to the accompanying drawings.
Image forming apparatus 1 include control device 10, sheet feed devices 20, photosensitive unit 30, developing unit 40, Transfer device 50, fixing device 60 and sheet carrying device 70.Receive the paper recording the sheet of paper having image Output tray unit T1 is arranged on the upper surface of image forming apparatus 1 (Z-direction side surface).
Controlling device 10 to include: controller 11, this controller controls the operation of image forming apparatus 1；Image procossing Unit 12, this graphics processing unit performs the operation controlled by controller 11；And supply unit 13.Supply unit 13 apply voltage to the device including photosensitive unit 30, developing unit 40 and transfer device 50.
Graphics processing unit 12 will be from external information transmitting device (such as personal computer) input printing letter so far Breath is converted into the image information for forming sub-image, and in predetermined timing to exposure device output drive signal.
The sheet feed devices 20 accommodating sheet of paper P that a pile is used as medium is arranged on the end of image forming apparatus 1 Portion.By registration sheet of paper P that positions in the direction of the width of plate (not shown) by sheet material extraction unit 22 along to Front once extracts one to (-X direction).
Sheet of paper P extracted by sheet material extraction unit 22 transmits path along sheet material and is sent to the registration roller occlusion to 23 Portion.
Photosensitive unit 30 includes photosensitive drums 31, and these photosensitive drums are disposed adjacently to one another on sheet feed devices 20 In the region of side (along Z-direction side).Corresponding developing unit 40 is by yellow (Y), magenta (M), cyan (C) it is formed in photosensitive drums 31 with the toner image of black (K).
In primary transfer processes, the toner image of the respective color being formed in the photosensitive drums 31 of photosensitive unit 30 In succession it is electrostatically transferred on the intermediate transfer belt 51 that is included in transfer device 50, thus forms assorted toner and be stacked Stacked toner image.Stacked toner image in transfer belt 51 formed between is by secondary transfer roller 52 Be transferred to by from alignment rolls to 23 transmit and by transmit guide means guide sheet of paper P on.
Fixing device 60 includes the fixing bite (fixing district) being positioned in such region, in this region, a pair Module i.e. heating module 61 is mutually pressed against with compression module 62.
By transfer device 50 transferred with sheet of paper P of toner image when toner image is unfixed The fixing bite of fixing device 60 it is sent to along transmission guide 53.The pair of module i.e. heating module 61 Heat is applied with pressure so that toner image is fixing to toner image with compression module 62.
It is formed with the sheet of paper P first transmission path S1 by sheet carrying device 70 of fixing toner image Guide and from the first outlet roller to the paper output tray list 80 outputs to the upper surface being positioned at image forming apparatus 1 Unit T1.When sheet of paper P to overturn so that duplex printing or when having the supine State-output of image with record, Direction of transfer is switched to towards the second direction transmitting path S2 by the first switching door G1.
Second transmit path S2 extends to the second switching door G2, this second switching door face down paper output mode with Facing up and switch between paper output mode, face down in paper output mode described, sheet of paper P has at record Export to paper output tray T2 81 from the second outlet roller under the ventricumbent state of image, defeated at the paper that faces up In exit pattern, sheet of paper P exports to paper 82 from the 3rd outlet roller under the supine state that record has image Open output pallet T3.
2. the structure of sheet carrying device and operation
Fig. 2 is to illustrate the generalized section that the sheet material of sheet carrying device 70 transmits path.Fig. 3 is to be shown in guiding Component 75 sheet material of sheet carrying device 70 when being in open orientation transmits the generalized section in path.
Structure and the sheet material transmission of the sheet carrying device 70 being included in image forming apparatus 1 are described with reference to the accompanying drawings Operation.
The structure of 2.1 sheet material delivery units
As shown in Figure 2, sheet carrying device 70 includes: guide 71a and 71b；Transfer roller is to 72,73 With 74；First switches door G1, the second switching door G2, the first outlet roller to the 80, second outlet roller to the 81, the 3rd Outlet roller is to 82 and guiding elements 75.
Guide 71a and the 71b that are positioned at the fixing bite downstream of fixing device 60 have toner image by fixing Sheet of paper P guide to transfer roller to 72.First outlet roller the first biography to 80 is extended to 72 from transfer roller Path S1 is sent to be limited by the first switching door G1.
As denoted by the arrows in fig. 2, be supported for can be for guiding sheet of paper P to for the first switching door G1 One outlet roller to 80 primary importance and revolve between the transfer roller second position to 73 for sheet of paper P is guided Turn.
It is positioned at for sheet of paper P being guided to primary importance to 80 of first outlet roller at the first switching door G1 Under state, from transfer roller extend to 72 first outlet roller to 80 the first transmission path S1 bend with suppression equipment Highly increase.
Second transmits path S2 is arranged on the transfer roller downstream to 72, and the second switching door along sheet material direction of transfer G2 is positioned at the branch point of the second transmission path S2.
As shown by the arrows in Figure 2, the second switching door G2 makes the second transmission path S2 be connected to draw sheet of paper P It is directed at second outlet roller the 3rd transmission path S3 to 81, or is connected to guide to the 3rd output sheet of paper P The roller the 4th transmission path S4 to 82.
Paper output tray T2 receives the paper sheet being in the ventricumbent state (face down state) that record has image Material P.Paper output tray T3 receives the paper being in the supine state (face up state) that record has image Sheet material P.
2.2 sheet materials transmit the formation in path
Second transmits path S2 is transmitted path by a part of the Web guide face 75a of guiding elements 75 with as the 3rd The guide 76 in one of the Web guide face of S3 limits.3rd transmits path S3 is cut with second by guide 76 The the first guide surface G2a changing a G2 limits.
4th transmission path S4 is positioned at the transfer roller part to 74 upstreams in concave side by drawing on sheet material direction of transfer The Web guide face 75a leading component 75 limits, and at convex side by the second guide surface G2b of the second switching door G2 Limit.4th transmits path S4 is positioned at the transfer roller part to 74 downstreams by Web guide face on sheet material direction of transfer 75a and guide 77 limit.
The whole main body of guiding elements 75 is bending in profile, and includes compression roller 73b and 74b, squeezes Pressure roller 73b and 74b is urged into from limiting the sheet material that the second transmission path S2 and the 4th transmits the concave side of path S4 Guide surface 75a stretches out.
Compression roller 73b be rotatably belonging to transfer roller to 73 driving roller 73a be pressed against, and along second Transmit path S2 and transmit sheet of paper P.Compression roller 74b is rotatably belonging to the transfer roller driving to 74 Roller 74a is pressed against, and from the second transmission path S2, sheet of paper P is sent to the 4th transmission path S4.
2.3 sheet materials transmit the open operation in path
As shown in Figure 3, guiding elements 75 rotates around support shaft 75b due to himself weight, so that second passes Path S2 and the 4th is sent to transmit path S4 open.
Support shaft 75b as center of rotation is positioned at the position separated from branch location towards the downstream of sheet material direction of transfer Put.When guiding elements 75 rotates to open orientation, it is the most open that the second transmission path S2 and the 4th transmits path S4, The distance between guide surface is made to increase (as indicated by the arrows in fig. 3).
3. remove the operation of jammed sheet of paper
Fig. 4 is to be shown in guiding elements 75 to be in the internal structure of sheet carrying device 70 under the state guiding orientation Axonometric chart.Fig. 5 is to be shown in the internal junction of sheet carrying device 70 under the state that guiding elements 75 is in open orientation The axonometric chart of structure.Fig. 6 is the generalized section illustrating such mode, in this approach, when guiding elements 75 with When apparatus body engages, open and close member 100 is closed.Fig. 7 is the generalized section illustrating such mode, in which In, when guiding elements 75 does not engages with apparatus body, open and close member 100 is closed.Fig. 8 is to illustrate guiding elements 75 Generalized section with the state that open and close member 100 engages with apparatus body.Fig. 9 is to illustrate that open and close member 100 is open And guiding elements 75 is in the generalized section of the state of open orientation.
The operation removing jammed sheet of paper of image forming apparatus 1 is described below in reference to accompanying drawing.
3.1 operations removing jammed sheet of paper
As shown in Figure 4, when the open inside making apparatus body of the open and close member 100 of apparatus body exposes, While paper output tray T3 is fixed to apparatus body, it is positioned at the sheet carrying device 70 in fixing device 60 downstream Expose.
Open and close member 100 includes junction surface 102, and this junction surface rotates in response to the operation of action bars 101.Engage Portion 102 has engagement recesses 102a, this engagement recesses and the boss 110 as the junction surface being arranged on apparatus body Engage, thus maintain and via registration roller, 23 and second are transferred from the sheet material extraction unit 22 of sheet feed devices 20 Roller 52 extends to transmit the sheet material of guide 53 and transmits path.
Guiding elements 75 is held at guiding orientation so that its downstream part on sheet material direction of transfer is by propping up Support axle 75b is pivotally supported on apparatus body, and makes it be arranged on the joint of sheet material direction of transfer upstream side Portion 78 engages with the boss 120 also serving as the junction surface being arranged on apparatus body.
As shown in Figure 5, the action bars of operation guide component 75 in the case of exposing at sheet carrying device 70 When 79, junction surface 78 is discharged from boss 120 in response to the operation of action bars 79, thus guiding elements 75 revolves Go to open orientation.
When guiding elements 75 is in open orientation, second transmits path S2 and the 4th transmission path S4 opens, and makes The guide 76, second obtaining the 3rd transmission path S3 switches the guide of door G2 and the 4th transmission path S4 77 expose, thus allow to remove jammed sheet of paper.
It is positioned at from branch location towards sheet material direction of transfer as support shaft 75b of the center of rotation of guiding elements 75 The position that trip side separates.When guiding elements 75 rotates to open orientation, second transmits path S2 and the 4th transmission path Footpath S4 is the most open so that the distance between guide surface increases.
Therefore, user can easily remove jammed sheet of paper.
When the sheet material of sheet carrying device 70 to be exposed transmits path, user is stacked with sheet of paper P not moving Paper output tray T3 in the case of the action bars 101 of controlled opening/closing component 100 so that sheet carrying device 70 expose.Then, the action bars 79 of user operation guiding elements 75.Therefore, the sheet material of sheet carrying device 70 Transmit path and open (seeing Fig. 9) due to himself weight.
Therefore, the operation of jammed sheet of paper that what user was to be performed remove is apparent from, it is thus possible to reduce by mistake The risk of operation.
Because sheet material can be made in the case of not moving the paper output tray T3 being stacked with sheet of paper P to transmit dress Put 70 exposures, so without providing the mechanism preventing the sheet of paper being stacked on paper output tray T3 from dropping. It is thereby possible to reduce the size of apparatus body.
3.2 operations closing sheet carrying device
Fig. 6 shows such mode, in this approach, the opening and closing structure when guiding elements 75 engages with apparatus body Part 100 is closed.In the image forming apparatus 1 according to this illustrative embodiments, when junction surface 78 be used as set Putting the boss 120 at the junction surface on apparatus body when engaging, the sheet material limiting sheet carrying device 70 transmits path Guiding elements 75 be held at guide orientation.
(Fig. 6 is seen along closing when direction rotates when opening into open and close member 100 that the inside making apparatus body exposes In arrow), engagement recesses 102a in junction surface 102 be used as the boss at junction surface that is arranged on apparatus body 110 engage, thus set up following state: maintain from sheet material extraction unit 22 via alignment rolls 23 and secondary transfer printing Roller 52 extends to transmit the sheet material of guide 53 and transmits path.
Therefore, antagonism applies to the transfer roller being included in the sheet carrying device 70 compression roller 73b to 73 and 74 Accepted by the junction surface 78 of guiding elements 75 with the counteracting force of the contact pressure of 74b, and do not apply to opening and closing structure Part 100.Therefore, it is possible to be easily performed the pass of open and close member 100 independent of the shutoff operation of guiding elements 75 Closed operation.
Fig. 7 shows such mode, in this approach, in the situation that guiding elements 75 does not engages with apparatus body Open and close member 100 is closed in ShiShimonoseki.
Open and close member 100 includes projected rib 103, and this projected rib is stretched out from the inner surface of open and close member 100.Performing During the shutoff operation of open and close member 100, projected rib 103 moves towards sheet carrying device 70, thus with formation Inclined plane 78a contact on the junction surface 78 of guiding elements 75.
When in the projected rib 103 of open and close member 100 and the inclined plane on the junction surface 78 being formed at guiding elements 75 78a contact while perform open and close member 100 shutoff operation time, projected rib 103 make junction surface 78 rotate (as Shown in arrow R2 in Fig. 7) while move (arrow R1 as shown in Figure 7) so that junction surface 78 with set The boss 120 put on apparatus body engages.
When open and close member 100 rotates along closedown direction further, engagement recesses 102a in junction surface 102 and use The boss 110 at the junction surface being arranged on apparatus body engages, thus maintain from sheet material extraction unit 22 via 23 and secondary transfer roller 52 are extended to close under the state transmitting the sheet material transmission path of guide 53 by alignment rolls The inside of apparatus body.
Therefore, i.e. box lunch performs the pass of open and close member 100 with apparatus body in the case of guiding elements 75 does not engages During closed operation, the guiding elements 75 of sheet carrying device 70 can also reliably be used as be arranged on apparatus body The boss 120 at junction surface engages and is kept into guiding orientation.
Fig. 8 shows the state that guiding elements 75 and open and close member 100 engage with apparatus body.
In the image forming apparatus 1 according to this illustrative embodiments, it is included in drawing in sheet carrying device 70 Lead the junction surface 78 of component 75 to engage with the boss 120 on apparatus body, so that guiding elements 75 is kept place In guiding orientation.
Additionally, the junction surface 102 of open and close member 100 engages with the boss 110 on apparatus body, thus maintain from Sheet material extraction unit 22 extends to the sheet material biography of transmission guide 53 via registration roller to 23 and secondary transfer roller 52 Send the inside of state ShiShimonoseki hull closure body in path.
Therefore, antagonism applies to the transfer roller being included in the sheet carrying device 70 compression roller 73b to 73 and 74 Accepted by the junction surface 78 of guiding elements 75 with the counteracting force of the contact pressure of 74b, and do not apply to opening and closing structure Part 100 such that it is able to suppression open and close member 100 deforms.
Purpose for explanation and description provides the above description of the illustrative embodiments for the present invention.It is not intended as The exhaustive present invention or limit the invention to exact form disclosed.Obviously, multiple modification and change are to this area It is apparent from for technical staff.Embodiment that is selected and that describe is to preferably explain that the present invention's is former Reason and its actual application, hence in so that others skilled in the art it will be appreciated that the various embodiments of the present invention and It is suitable for the various modification of the concrete application conceived.Protection scope of the present invention ought to by claims and etc. Jljl limits.

Claims (6)

1. an image forming apparatus, this image forming apparatus includes:
Medium transporting path, this medium transporting path is branch at predetermined branch location, and medium passes along this medium Send path with case of bending towards stack portion transmission；
Can the open and close member of opening and closing, described open and close member open so that apparatus body on medium direction of transfer in institute State the inside in the upstream region of branch location to expose；And
Having the guiding elements of guide surface, this guide surface is used as described medium biography in the concave side of described medium transporting path Sending first guide surface in path, described guiding elements is supported for so that described guiding elements can guide orientation with open Rotating between orientation, guide orientation described, described guiding elements guides described medium, and described guiding elements is from described Orientation is guided to rotate to described open orientation so that the described guide surface of described guiding elements is open.
Image forming apparatus the most according to claim 1,
Wherein, the center of rotation of described guiding elements is located along described medium transporting path towards described medium direction of transfer The position that downstream separates with described branch location, and
Wherein, when described guiding elements rotates to described open orientation, described the first of described medium transporting path is drawn The distance between the second guide surface of described first guide surface of guide face and described medium transporting path increases.
Image forming apparatus the most according to claim 1 and 2,
Wherein, described guiding elements guides orientation to rotate to described opening due to the weight of described guiding elements from described Orientation.
4., according to the image forming apparatus described in any one in claims 1 to 3, this image forming apparatus also includes:
It is arranged on the junction surface on described apparatus body；
Being arranged on the junction surface on described guiding elements, the described junction surface being arranged on described guiding elements can be with setting Described junction surface on described apparatus body engages；And
It is arranged on the contact site on described open and close member, when described open and close member moves to closed position from release position Time, this contact site while contacting with the contact site at the described junction surface being arranged on described guiding elements relative to institute The described junction surface stated on guiding elements is moved.
Image forming apparatus the most according to claim 4,
Wherein, described guiding elements includes maintaining part, and this maintaining part makes the described junction surface on described guiding elements and institute The described junction surface stated on apparatus body is mutually disengaged.
6. according to the image forming apparatus described in any one in claim 1 to 5,
Wherein, described stack portion is fixed to apparatus body.
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