WO2015111492A1 - 画像形成装置 - Google Patents
画像形成装置 Download PDFInfo
- Publication number
- WO2015111492A1 WO2015111492A1 PCT/JP2015/050891 JP2015050891W WO2015111492A1 WO 2015111492 A1 WO2015111492 A1 WO 2015111492A1 JP 2015050891 W JP2015050891 W JP 2015050891W WO 2015111492 A1 WO2015111492 A1 WO 2015111492A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cover member
- unit
- movable guide
- recording medium
- image forming
- Prior art date
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Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
- G03G21/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
- G03G21/1604—Arrangement or disposition of the entire apparatus
- G03G21/1623—Means to access the interior of the apparatus
- G03G21/1638—Means to access the interior of the apparatus directed to paper handling or jam treatment
-
- 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
- G03G15/22—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20
- G03G15/23—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 specially adapted for copying both sides of an original or for copying on both sides of a recording or image-receiving material
- G03G15/231—Arrangements for copying on both sides of a recording or image-receiving material
- G03G15/232—Arrangements for copying on both sides of a recording or image-receiving material using a single reusable electrographic recording member
- G03G15/234—Arrangements for copying on both sides of a recording or image-receiving material using a single reusable electrographic recording member by inverting and refeeding the image receiving material with an image on one face to the recording member to transfer a second image on its second face, e.g. by using a duplex tray; Details of duplex trays or inverters
-
- 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
- G03G15/6573—Feeding path after the fixing point and up to the discharge tray or the finisher, e.g. special treatment of copy material to compensate for effects from the fixing
-
- 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
- G03G15/6579—Refeeding path for composite copying
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
- G03G21/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
- G03G21/1604—Arrangement or disposition of the entire apparatus
- G03G21/1623—Means to access the interior of the apparatus
- G03G21/1633—Means to access the interior of the apparatus using doors or covers
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2215/00—Apparatus for electrophotographic processes
- G03G2215/00362—Apparatus for electrophotographic processes relating to the copy medium handling
- G03G2215/00367—The feeding path segment where particular handling of the copy medium occurs, segments being adjacent and non-overlapping. Each segment is identified by the most downstream point in the segment, so that for instance the segment labelled "Fixing device" is referring to the path between the "Transfer device" and the "Fixing device"
- G03G2215/00417—Post-fixing device
- G03G2215/0043—Refeeding path
- G03G2215/00438—Inverter of refeeding path
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2215/00—Apparatus for electrophotographic processes
- G03G2215/00362—Apparatus for electrophotographic processes relating to the copy medium handling
- G03G2215/00535—Stable handling of copy medium
- G03G2215/00544—Openable part of feed path
Definitions
- the present invention relates to an image forming apparatus such as a copying machine.
- a recording medium such as a copy sheet may be jammed inside (hereinafter referred to as “jam”).
- jam a recording medium such as a copy sheet
- the user refers to the message displayed on the display unit and removes the recording medium jammed at the location where the jam has occurred.
- the reversing conveyance unit is rotatable between a closed position where the reversing conveyance unit is mounted on the apparatus main body and an open position where the reversing conveyance unit projects from the side surface of the apparatus main body (patent).
- the reversing conveyance unit is rotatable between a closed position where the reversing conveyance unit is mounted on the apparatus main body and an open position where the reversing conveyance unit projects from the side surface of the apparatus main body (patent).
- the reversing conveyance unit is rotatable between a closed position where the reversing conveyance unit is mounted on the apparatus main body and an open position where the reversing conveyance unit projects from the side surface of the apparatus main body (patent).
- Patent 1 the reversing conveyance unit is rotatable between a closed position where the reversing conveyance unit is mounted on the apparatus main body and an open position where the reversing conveyance unit projects from the side surface of the apparatus main body (patent).
- the discharge unit that discharges the image-formed recording medium is concealed, and when the reverse conveyance unit is in the open position, the end of the discharge unit is exposed.
- the user moves the reverse conveyance unit to the open position and inserts a hand into the discharge unit to remove the jammed recording medium.
- Patent Document 1 has the following problems. In other words, it is difficult to visually recognize the jammed recording medium in the state in which the reversing conveyance unit is moved to the open position and it is difficult to reach the jammed recording medium, and it is difficult for the user to perform jam processing.
- the present invention has been made in view of the above problems, and an object of the present invention is to provide an image forming apparatus in which the efficiency of the jam processing of the user is improved.
- An image forming apparatus includes an apparatus main body, a recording medium storage unit, a paper feeding unit, an upstream conveying unit, an image forming unit, a downstream conveying unit, a reverse conveying unit, a cover member, and a movable member.
- the downstream transport unit includes a discharge unit and a reversing unit.
- the recording medium storage unit stores a recording medium.
- the paper feeding unit takes out the recording medium from the recording medium storage unit.
- the image forming unit forms an image on the recording medium.
- the upstream conveying unit conveys the recording medium taken out by the paper feeding unit toward the image forming unit.
- the discharge unit discharges the recording medium on which the image is formed.
- the reversing unit reverses the transport direction of the recording medium and transports the recording medium.
- the downstream transport unit is provided on the downstream side of the upstream transport unit.
- the reversing conveyance unit conveys the recording medium reversed by the reversing unit to the upstream conveyance unit.
- the cover member is movably supported by the apparatus main body, and moves between a closed position that constitutes the upstream transport unit and an open position that opens the upstream transport unit.
- the movable guide unit is movably supported by the apparatus main body, and moves between a first position that constitutes the downstream conveyance unit and a second position that opens the downstream conveyance unit.
- the reverse conveying unit includes a first reverse path and a second reverse path. The first inversion path is formed along the movable guide portion.
- the second reversing path is continuous with the first reversing path and is formed along the cover member.
- the movable guide portion moves in conjunction with the cover member, and when the cover member is in the closed position, the movable guide portion is disposed at the first position, and the recording medium reversed by the reversing portion is moved to the first position. Guiding from the reversing path to the second reversing path, the cover member is disposed at the second position when the cover member is in the open position.
- the efficiency of user jam processing is improved.
- FIG. 1 is a schematic configuration diagram of an embodiment of an image forming apparatus according to the present invention.
- FIG. 2 is a longitudinal sectional view of one side portion of the image forming apparatus shown in FIG. 1.
- FIG. 2 is a longitudinal sectional view showing a state in which one side portion of the image forming apparatus shown in FIG. 1 is opened.
- FIG. 3 is an enlarged view showing a state where the movable guide plate shown in FIG. 2 is in a first position. It is an enlarged view which shows the state which has the movable guide plate shown by FIG. 2 in a 2nd position. It is a perspective view of the discharge guide shown in FIG. 2 and its periphery.
- FIG. 1 is a schematic configuration diagram of an embodiment of an image forming apparatus 1 according to the present invention.
- FIG. 2 is a longitudinal sectional view of one side portion of the image forming apparatus 1.
- FIG. 3 is a longitudinal sectional view showing a state in which one side portion of the image forming apparatus 1 is opened.
- the image forming apparatus 1 is a multifunction machine having functions such as a copy, a fax, a printer, and a scanner. As shown in FIG. 1, the apparatus main body 10, a paper feed cassette 20 as a recording medium storage unit, and paper feed A pair of paper feed rollers 30 as an image forming unit, an image forming unit 40, an upstream side conveyance unit 60, a downstream side conveyance unit 70, a cover member 80, and a movable guide unit 90.
- a loading unit 11 is provided on the upper part of the apparatus body 10.
- recording media for example, copy sheets
- recording media on which an image is formed discharged from the discharge unit 50 are stacked and stocked.
- the paper cassette 20 is detachable from the apparatus main body 10.
- the sheet feeding cassette 20 stores recording media in a stacked state.
- the paper feed roller pair 30 takes out the recording medium from the paper feed cassette 20.
- the upstream transport unit 60 transports the recording medium taken out by the paper feed roller pair 30 toward the image forming unit 40.
- the image forming unit 40 forms an image on a recording medium. Details of the image forming unit 40 will be described later.
- the downstream side conveyance unit 70 is provided on the downstream side of the upstream side conveyance unit 60 and conveys the recording medium on which the image is formed toward the stacking unit 11.
- the downstream transport unit 70 includes a discharge unit 50.
- the discharge unit 50 is provided at the upper part of the side surface of the stacking unit 11.
- the discharge unit 50 discharges the recording medium on which the image is formed to the stacking unit 11.
- the cover member 80 is movably supported by the apparatus body 10 and moves between a closed position (see FIG. 2) and an open position (see FIG. 3). When the cover member 80 is in the closed position, the upstream conveyance unit 60 is configured, and when the cover member 80 is in the open position, the upstream conveyance unit 60 is opened.
- the cover member 80 has a contact portion 80a (first contact portion).
- the contact portion 80 a is formed at the upper end portion of the cover member 80. Details of the contact portion 80a will be described later.
- the movable guide portion 90 includes a movable guide plate 91.
- the movable guide plate 91 is movably supported by the apparatus body 10 and moves between a first position (see FIG. 2) and a second position (see FIG. 3).
- a first position see FIG. 2
- a second position see FIG. 3
- the downstream side conveyance unit 70 is configured, and when the movable guide plate 91 is at the second position, the downstream side conveyance unit 70 is opened.
- the movable guide plate 91 moves in conjunction with the cover member 80.
- the movable guide plate 91 is disposed at the first position when the cover member 80 is in the closed position, and is disposed at the second position when the cover member 80 is in the open position.
- the image forming unit 40 includes a laser scanning unit 41, image forming units 42A to 42D, an intermediate transfer belt unit 43, toner cartridges 44A to 44D, a secondary transfer roller 45, and a fixing unit 46.
- the laser scanning unit 41 sensitizes a light beam generator that generates laser light corresponding to image data, a polygon mirror that reflects a light beam emitted from the light beam generator, and a light beam reflected by the polygon mirror.
- An f ⁇ lens that forms an image on the outer peripheral surface of a body drum 421 (described later) is included.
- the image forming unit 42A forms a black image
- the image forming unit 42B forms a yellow image
- the image forming unit 42C forms a cyan image
- the image forming unit 42D forms a magenta image.
- Each of the image forming units 42A to 42D includes a photosensitive drum 421, a charger 422, a developing device 423, a primary transfer roller 424, a cleaner 425, and a static eliminator 426.
- the outer peripheral surface of the photosensitive drum 421 is charged by the charger 422.
- An electrostatic latent image corresponding to the image data is formed by the laser scanning unit 41 on the outer peripheral surface of the charged photosensitive drum 421.
- the developing unit 423 supplies toner to the outer peripheral surface of the photosensitive drum 421 and develops the electrostatic latent image on the outer peripheral surface of the photosensitive drum 421 to form a toner image.
- the primary transfer roller 424 transfers the toner image on the outer peripheral surface of the photosensitive drum 421 onto an intermediate transfer belt 431 (described later).
- the cleaner 425 removes the toner remaining on the outer peripheral surface of the photosensitive drum 421 after the toner image is transferred onto the intermediate transfer belt 431.
- the static eliminator 426 removes the charge remaining on the outer peripheral surface of the photosensitive drum 421 after the toner image is transferred onto the intermediate transfer belt 431.
- the intermediate transfer belt unit 43 includes an intermediate transfer belt 431, a driving roller 432, a tension roller 433, and a cleaning unit 434.
- the intermediate transfer belt 431 is endless and is stretched between the drive roller 432 and the tension roller 433.
- the cleaning unit 434 cleans the intermediate transfer belt 431 after the toner image on the intermediate transfer belt 431 is transferred to the recording medium.
- the toner cartridge 44A supplies black toner to the developing unit 423 of the image forming unit 42A.
- the toner cartridge 44B supplies yellow toner to the developing unit 423 of the image forming unit 42B.
- the toner cartridge 44C supplies cyan toner to the developing unit 423 of the image forming unit 42C.
- the toner cartridge 44D supplies magenta toner to the developing unit 423 of the image forming unit 42D.
- the secondary transfer roller 45 is disposed to face the driving roller 432, and the recording medium is sandwiched between the secondary transfer roller 432 and the toner image on the intermediate transfer belt 431 is transferred to the recording medium.
- the fixing unit 46 includes a pair of rollers, and heats and pressurizes the recording medium between the pair of rollers to fix the toner image transferred to the recording medium to the recording medium.
- the upstream transport unit 60 includes a registration roller pair 61.
- the registration roller pair 61 performs skew correction of the recording medium supplied from the paper feed roller pair 30.
- the registration roller pair 61 temporarily puts the recording medium on standby, and then sends the recording medium to the secondary transfer roller 45 in accordance with the transfer timing of the toner image onto the recording medium by the secondary transfer roller 45.
- the downstream transport unit 70 further includes a transport roller pair 71, a branch guide 72, and a reversing roller 73 as a reversing unit.
- a conveyance path one-dot chain line from the paper feed roller pair 30 to the registration roller pair 61, the secondary transfer roller 45, and the fixing unit 46 to the discharge unit 50 or the reverse roller 73.
- a conveyance path Is referred to as a main conveyance path P1
- a conveyance path (indicated by a two-dot chain line) from the reversing roller 73 to the registration roller pair 61 via the movable guide portion 90 and the cover member 80 is referred to as a reversal conveyance path P2.
- the reverse conveyance path P2 includes a reverse path Pr1 (first reverse path) and a reverse path Pr2 (second reverse path).
- the reversing path Pr1 is formed along the movable guide plate 91.
- the inversion path Pr2 is continuous with the inversion path Pr1 and is formed along the inner wall surface of the cover member 80.
- the conveyance roller pair 71 conveys the recording medium along the main conveyance path P1.
- the branch guide 72 is swingable by an actuator, and branches the main transport path P1 into a discharge path P1a and a reverse path P1b.
- the discharge path P1a guides the recording medium to the discharge unit 50.
- the reverse path P1b guides the recording medium having an image formed on one side to the reverse roller 73.
- the reverse roller 73 reverses the transport direction of the recording medium having an image formed on one side and transports the recording medium along the reverse transport path P2.
- the reverse conveyance path P ⁇ b> 2 conveys the recording medium reversed by the reverse roller 73 to the upstream conveyance unit 60.
- the reverse conveyance path P2 functions as the reverse conveyance unit of the present invention.
- the lower end of the cover member 80 is rotatably supported by the apparatus body 10 and rotates in a vertical plane.
- the cover member 80 includes a plurality of guide rollers 81.
- the plurality of guide rollers 81 are provided along the reverse conveyance path P2.
- One end of the movable guide plate 91 is rotatably supported by the apparatus body 10 and rotates within a vertical plane.
- the movable guide plate 91 is disposed between the reversing roller 73 and the reversing path Pr2.
- the movable guide plate 91 guides the recording medium reversed by the reversing roller 73 from the reversing path Pr1 to the reversing path Pr2.
- the image forming apparatus 1 further includes a transport unit 100.
- the transport unit 100 forms a part of the upstream transport unit 60 and also forms a reverse transport path P ⁇ b> 2 between the transport unit 100 and the cover member 80.
- the transport unit 100 is supported by the cover member 80. When the cover member 80 is rotated to the open position, the transport unit 100 moves together with the cover member 80 and protrudes from the apparatus main body 10.
- the transport unit 100 includes a secondary transfer roller 45, a part of the registration roller pair 61, and a plurality of guide rollers 101.
- the plurality of guide rollers 101 are provided along the reverse conveyance path P2.
- FIG. 4 is a partially enlarged view of FIG. FIG. 4A shows a state where the movable guide plate 91 is in the first position
- FIG. 4B shows a state where the movable guide plate 91 is in the second position
- FIG. 5 is a perspective view of the movable guide 90 and its periphery. In FIG. 5, the cover member 80 is omitted for simplification of the drawing, but the state where the movable guide plate 91 is in the first position is shown.
- the movable guide plate 91 is supported by the apparatus main body 10 so as to be rotatable between a first position and a second position. Specifically, one end 91 a of the movable guide plate 91 is rotatably supported by the apparatus main body 10. As a result, the movable guide plate 91 can be rotated from the first position to the second position and from the second position to the first position.
- the movable guide portion 90 further includes a link member 92 and a spring 93 as an urging member.
- the link member 92 is rotatably supported by the apparatus main body 10. One end portion of the link member 92 is engaged with the movable guide plate 91, and the other end portion of the link member 92 can be brought into contact with and separated from the cover member 80.
- the spring 93 is stretched between the apparatus main body 10 and the movable guide plate 91 and biases the movable guide plate 91 toward the second position. Specifically, the spring 93 biases the other end 91 b of the movable guide plate 91 in the direction D in which the spring 93 contracts. In the state shown in FIG. 4B, the spring 93 biases the movable guide plate 91 so that the discharge path P1a and the reverse path P1b are opened.
- the cover member 80 presses the link member 92 in the closed position and is separated from the link member 92 in the open position.
- the link member 92 positions the movable guide plate 91 in the first position when the cover member 80 is in the closed position, and rotates the movable guide plate 91 to the second position when the cover member 80 is in the open position. Is acceptable. In other words, the movable guide plate 91 is positioned at the first position by the pressing of the link member 92 when the cover member 80 is in the closed position. The movable guide plate 91 is positioned at the second position by the biasing force of the spring 93 when the cover member 80 is in the open position.
- the apparatus main body 10 includes a support member 12.
- the support member 12 has a slit portion 12a formed in an inverted U shape.
- the link member 92 is L-shaped.
- the link member 92 has a corner 92c.
- the link member 92 is pivotally supported by the support member 12 at the corner 92c.
- the link member 92 further includes an engaging portion 92a and a contact portion 92b (second contact portion).
- An engaging recess 92d is formed on one side surface of the engaging portion 92a.
- the engaging recess 92d extends in the longitudinal direction of the engaging portion 92a.
- the abutting portion 92b is accommodated in the slit portion 12a so as to freely enter and exit.
- the movable guide plate 91 has a support shaft 91c.
- the support shaft 91c protrudes horizontally from one side surface of the other end 91b of the movable guide plate 91.
- the support shaft 91c is slidably engaged with the engaging recess 92d in the longitudinal direction.
- the contact portion 80a of the cover member 80 contacts the contact portion 92b of the link member 92.
- the urging force of the spring 93 acts on the link member 92 around the support shaft 91c, and the link member 92 is urged in a direction protruding from the slit portion 12a.
- the contact portion 80a contacts the contact portion 92b the link member 92 is maintained in the state shown in FIG. 5 (the state where the contact portion 92b is accommodated in the slit portion 12a).
- the movable guide plate 91 is maintained at the first position.
- the contact portion 92b is substantially parallel to the contact portion 80a when the cover member 80 is in the closed position. Therefore, stable positioning of the movable guide plate 91 to the first position is possible.
- a jam processing method in the image forming apparatus 1 will be described with reference to FIGS.
- the user moves the cover member 80 from the closed position shown in FIG. 2 to the open position shown in FIG.
- the movable guide plate 91 moves from the first position shown in FIG. 4A to the second position shown in FIG. 4B, and the reversing path P1b and the discharge path P1a are opened.
- the user removes the jammed recording medium by inserting his / her hand from the outside of the image forming apparatus 1 into the reverse path P1b or the discharge path P1a.
- the user rotates the cover member 80 from the open position shown in FIG. 3 to the closed position shown in FIG.
- the movable guide plate 91 rotates from the second position shown in FIG. 4B to the first position shown in FIG. 4A, and the discharge path P1a and the reverse path P1b are closed.
- the movable guide unit 90 is interlocked to open the downstream conveyance unit 70, so that the user can perform jam processing compared to an image forming apparatus that does not include the movable guide unit 90. Can be performed efficiently. Further, since the jam processing structure of the image forming apparatus 1 is configured by the movable guide plate 91, the link member 92, and the spring 93, the fixing unit 46 and the transport unit 100 are made common to the existing image forming apparatus. Can do. Therefore, it is not necessary to newly design the fixing unit 46 and the transport unit 100, and the die cost can be reduced.
- the discharge path P ⁇ b> 1 a is formed so as to extend upward.
- the distance from the bottom surface to the discharge unit 50 can be increased, and the amount of recording medium stock in the stacking unit 11 can be increased.
- the processing speed of the recording medium is increased in the image forming apparatus 1, it is possible to prevent the recording medium on which the image has been formed from overflowing from the stacking unit 11. Therefore, high-speed processing of the recording medium in the image forming apparatus 1 can be achieved.
- the discharge path is formed so as to extend obliquely upward from the reverse conveyance unit.
- the direction in which the discharge path extends from the reverse conveyance unit is not limited.
- the present invention can also be applied to a case where the discharge path extends from the reverse conveyance unit in a direction other than obliquely upward (for example, the horizontal direction from the reverse conveyance unit).
- the present invention is applied to an image forming apparatus that forms an image on both sides of a recording medium, that is, an image forming apparatus having a reversal conveyance unit has been described.
- image formation is performed only on one side of a recording medium.
- the present invention can also be applied to an image forming apparatus to be performed.
- the present invention is also applied to an image forming apparatus other than an electrophotographic system (for example, an ink jet image forming apparatus). Is possible.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electrophotography Configuration And Component (AREA)
- Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
- Paper Feeding For Electrophotography (AREA)
- Conveyance By Endless Belt Conveyors (AREA)
Abstract
Description
Claims (7)
- 装置本体と、
記録媒体を収納する記録媒体収納部と、
前記記録媒体収納部から前記記録媒体を取り出す給紙部と、
前記記録媒体に画像を形成する画像形成部と、
前記給紙部が取り出した前記記録媒体を前記画像形成部に向けて搬送する上流側搬送部と、
前記画像の形成された前記記録媒体を排出する排出部と、前記記録媒体の搬送方向を反転させて、前記記録媒体を搬送する反転部とを含み、前記上流側搬送部の下流側に設けられる下流側搬送部と、
前記反転部で反転させた前記記録媒体を前記上流側搬送部へ搬送する反転搬送部と、
前記装置本体に移動可能に支持され、前記上流側搬送部を構成する閉位置と、前記上流側搬送部を開放する開位置との間を移動するカバー部材と、
前記装置本体に移動可能に支持され、前記下流側搬送部を構成する第1位置と、前記下流側搬送部を開放する第2位置との間を移動する可動ガイド部と
を備え、
前記反転搬送部は、
前記可動ガイド部に沿って形成される第1反転路と、
前記第1反転路に連続し、前記カバー部材に沿って形成される第2反転路と
を含み、
前記可動ガイド部は、前記カバー部材に連動して移動し、前記カバー部材が前記閉位置にあるときに、前記第1位置に配置され、前記反転部で反転された前記記録媒体を前記第1反転路から前記第2反転路へ案内し、前記カバー部材が前記開位置にあるときに前記第2位置に配置される、画像形成装置。 - 前記上流側搬送部を構成する共に、前記カバー部材との間に前記反転搬送部を構成し、前記カバー部材に支持される搬送ユニットをさらに備える、請求項1に記載の画像形成装置。
- 前記可動ガイド部は、
前記装置本体に前記第1位置と前記第2位置との間で回動可能に支持された可動ガイド板と、
前記装置本体に回動可能に支持され、一端部が前記可動ガイド板と係合し、他端部が前記カバー部材と接離可能なリンク部材と、
前記可動ガイド板を前記第2位置に向けて付勢する付勢部材と
をさらに含み、
前記カバー部材は、前記閉位置において前記リンク部材を押圧すると共に、前記開位置において前記リンク部材から離間し、
前記可動ガイド板は、前記カバー部材が前記閉位置にあるときに、前記リンク部材の押圧により、前記第1位置に位置決めされ、前記カバー部材が前記開位置にあるときに、前記付勢部材の付勢力により、前記第2位置に位置決めされる、請求項1に記載の画像形成装置。 - 前記リンク部材は、L字形であり、角部を有し、前記角部において回動自在に軸支されている、請求項3に記載の画像形成装置。
- 前記カバー部材は、第1当接部を含み、
前記装置本体は、逆U字形に形成されたスリット部を有する支持部材を含み、
前記リンク部材は、
前記可動ガイド板と係合する係合部と、
前記カバー部材が前記閉位置にあるときに前記カバー部材の前記第1当接部と当接する第2当接部と
をさらに有し、
前記リンク部材は、前記リンク部材の前記角部において前記支持部材に回動自在に軸支され、
前記第2当接部は、前記スリット部に対して出入り自在に収容される、請求項4に記載の画像形成装置。 - 前記カバー部材は、第1当接部を含み、
前記装置本体は、逆U字形に形成されたスリット部を有する支持部材を含み、
前記リンク部材は、
前記可動ガイド板と係合する係合部と、
前記カバー部材が前記閉位置にあるときに前記カバー部材の前記第1当接部と当接する第2当接部と
をさらに有し、
前記リンク部材は、前記リンク部材の前記角部において前記支持部材に回動自在に軸支され、
前記第2当接部は、前記カバー部材が前記閉位置にあるときに前記第1当接部と平行である、請求項4に記載の画像形成装置。 - 前記カバー部材は、第1当接部を含み、
前記可動ガイド板の一端が、前記装置本体に回動可能に支持され、
前記可動ガイド板の他端が、前記付勢部材に付勢され、
前記リンク部材は、
前記可動ガイド板と係合する係合部と、
前記カバー部材が前記閉位置にあるときに前記カバー部材の前記第1当接部と当接する第2当接部と
をさらに有し、
前記係合部には、前記係合部の長手方向に延びる係合凹部が形成され、
前記可動ガイド板は、前記可動ガイド板の前記他端から突出している支軸を有し、
前記支軸は、前記係合凹部に対して長手方向に摺動自在に係合している、請求項3に記載の画像形成装置。
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US14/888,542 US9541894B2 (en) | 2014-01-22 | 2015-01-15 | Image forming apparatus including movable guide section movably supported by apparatus main body |
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JP2014-009081 | 2014-01-22 |
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CN107145048A (zh) * | 2016-03-01 | 2017-09-08 | 京瓷办公信息***株式会社 | 图像形成装置 |
CN109917625A (zh) * | 2017-12-08 | 2019-06-21 | 京瓷办公信息***株式会社 | 定影装置及图像形成装置 |
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JP2010284823A (ja) * | 2009-06-09 | 2010-12-24 | Ricoh Co Ltd | 開閉カバーのロック機構および画像形成装置 |
JP2011215415A (ja) * | 2010-03-31 | 2011-10-27 | Konica Minolta Business Technologies Inc | 画像形成装置 |
JP2012136034A (ja) * | 2012-03-30 | 2012-07-19 | Ricoh Co Ltd | 画像形成装置 |
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JP3755978B2 (ja) * | 1997-11-27 | 2006-03-15 | 株式会社リコー | 画像形成装置におけるシート搬送装置 |
JP3375902B2 (ja) * | 1998-01-19 | 2003-02-10 | 京セラミタ株式会社 | 画像形成装置 |
JP2004359441A (ja) * | 2003-06-06 | 2004-12-24 | Seiko Epson Corp | 用紙搬送装置および画像形成装置 |
JP2007091435A (ja) * | 2005-09-29 | 2007-04-12 | Canon Inc | シート搬送装置及び画像形成装置 |
JP2008127185A (ja) | 2006-11-24 | 2008-06-05 | Kyocera Mita Corp | 画像形成装置 |
JP4873487B2 (ja) * | 2007-05-22 | 2012-02-08 | 京セラミタ株式会社 | 画像形成装置 |
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JP2000044086A (ja) * | 1998-05-22 | 2000-02-15 | Sharp Corp | 画像形成装置 |
JP2005141024A (ja) * | 2003-11-07 | 2005-06-02 | Murata Mach Ltd | 画像形成装置 |
JP2010284823A (ja) * | 2009-06-09 | 2010-12-24 | Ricoh Co Ltd | 開閉カバーのロック機構および画像形成装置 |
JP2011215415A (ja) * | 2010-03-31 | 2011-10-27 | Konica Minolta Business Technologies Inc | 画像形成装置 |
JP2012136034A (ja) * | 2012-03-30 | 2012-07-19 | Ricoh Co Ltd | 画像形成装置 |
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CN107145048A (zh) * | 2016-03-01 | 2017-09-08 | 京瓷办公信息***株式会社 | 图像形成装置 |
CN109917625A (zh) * | 2017-12-08 | 2019-06-21 | 京瓷办公信息***株式会社 | 定影装置及图像形成装置 |
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US9541894B2 (en) | 2017-01-10 |
JPWO2015111492A1 (ja) | 2017-03-23 |
US20160062306A1 (en) | 2016-03-03 |
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