US20110221121A1 - Sheet feeding apparatus and image forming apparatus - Google Patents
Sheet feeding apparatus and image forming apparatus Download PDFInfo
- Publication number
- US20110221121A1 US20110221121A1 US13/111,997 US201113111997A US2011221121A1 US 20110221121 A1 US20110221121 A1 US 20110221121A1 US 201113111997 A US201113111997 A US 201113111997A US 2011221121 A1 US2011221121 A1 US 2011221121A1
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- US
- United States
- Prior art keywords
- sheet
- regulating
- width direction
- cassette
- sheet stacking
- 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.)
- Abandoned
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Classifications
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H1/00—Supports or magazines for piles from which articles are to be separated
- B65H1/26—Supports or magazines for piles from which articles are to be separated with auxiliary supports to facilitate introduction or renewal of the pile
- B65H1/266—Support fully or partially removable from the handling machine, e.g. cassette, drawer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J13/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in short lengths, e.g. sheets
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- 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
- B65H2402/10—Modular constructions, e.g. using preformed elements or profiles
-
- 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
- B65H2405/00—Parts for holding the handled material
- B65H2405/30—Other features of supports for sheets
- B65H2405/36—Multiple support
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
- B65H2511/10—Size; Dimensions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
- B65H2511/10—Size; Dimensions
- B65H2511/12—Width
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
- B65H2511/20—Location in space
-
- 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
Definitions
- the present invention relates to a sheet feeding apparatus and an image forming apparatus, particularly to a sheet feeding apparatus in which a second sheet stacking portion is detachably attached to a first sheet stacking portion and an image forming apparatus.
- an image forming apparatus such as a copying machine, a printer, and a facsimile, in which the sheet is fed from the sheet feeding apparatus to the image forming portion to form an image is widely spread.
- a sheet cassette that is of a sheet storage portion is detachably attached to an apparatus main body, and the sheet stored in the sheet cassette is automatically fed to the image forming portion.
- an intermediate plate on which the sheets are stacked to press the sheet against a sheet feeding roller is provided while being able to be lifted and lowered.
- a trailing end regulating member that regulates a position of a trailing end in a feeding direction of the sheet stacked and stored on the intermediate plate (hereinafter referred to as trailing end) is provided so as to store the sheets having different sizes.
- a side end regulating member is also provided to regulate a side end position in a direction (hereinafter referred to as width direction) orthogonal to the sheet feeding direction.
- the sheet trailing end is regulated by the trailing end regulating member while the sheet side end is regulated by the side end regulating member, whereby the sheet leading end is always regulated at a predetermined position. Therefore, the sheet can stably be fed irrespective of the sheet size when the sheet cassette is stored in the apparatus main body.
- the small-size sheet when the small-size sheet is set in the sheet cassette, the small-size sheet is located outside a range where the side end regulating member and the trailing end regulating member are moved. Therefore, when the small-size sheet is set in the sheet cassette, the position of the sheet cannot be regulated by the side end regulating member and the trailing end regulating member.
- Japanese Patent Application Laid-Open No. 2005-263450 discloses a technique in which the side end regulating member can be moved to a position that regulates the small-size sheet.
- the intermediate plate is notched in the width direction in order to enable the side end regulating member to be moved in the width direction.
- Japanese Patent Application Laid-Open No. 11-217123 discloses a technique in which an attachment is attached to the side end regulating member.
- Japanese Patent Application Laid-Open No. 11-059925 discloses a technique in which a dedicated cassette that is of a small-size-sheet regulating member is detachably attached to the sheet cassette.
- the intermediate plate when the intermediate plate is notched such that the side end regulating member can be moved in the width direction, it is necessary that the intermediate plate is largely notched in order to enable the side end regulating member to be moved to the position that regulates the small-size sheet.
- the attachment When the attachment is attached to the side end regulating member, it is necessary that the attachment is moved to the side end position of the small-size sheet. Therefore, it is necessary to largely notch the intermediate plate. A strength of the intermediate plate is decreased when the intermediate plate is largely notched.
- the dedicated cassette when the dedicated cassette is detachably attached to the sheet cassette, it is not necessary to largely notch the intermediate plate.
- the sheet cannot stably be fed because the side end regulating member that regulates the sheet position in the width direction is not provided in the dedicated cassette.
- a mechanism for fixing the side end regulating member moved to a side end regulating position is required to stably feed the sheet.
- the mechanism is provided, a configuration of the dedicated cassette becomes complicated and cost is increased.
- the present invention provides a sheet feeding apparatus and an image forming apparatus, in which a sheet can stably be fed with a simple configuration without decreasing strength of an intermediate plate.
- a sheet feeding apparatus including a sheet stacking portion on which a sheet is stacked; a pair of first regulating portions that is provided while being movable in a width direction of the sheet in order to regulate a position in the width direction of the sheet stacked on the sheet stacking portion; a sheet stacking unit that is attached to the sheet stacking portion; and a pair of second regulating portions that regulates the position in the width direction of the sheet stacked on the sheet stacking unit, wherein at least one of the second regulating portions is movable in the width direction, and the pair of second regulating portions are regulated by the pair of first regulating portions, respectively.
- the position of the second regulating member of the second sheet stacking portion is regulated by the first regulating member that regulates the position of the sheet stacked on the first sheet stacking portion, so that the sheet can stably be fed with the simple configuration without decreasing the strength of the intermediate plate.
- FIG. 1 illustrates an entire configuration of a Laser Beam Printer (LBP) that is of an example of an image forming apparatus including a sheet conveying apparatus according to an embodiment of the invention.
- LBP Laser Beam Printer
- FIG. 2 is a perspective view illustrating a sheet cassette that is detachably attached to a printer main body of the laser beam printer.
- FIG. 3 is a perspective view illustrating a configuration for moving a side regulating plate provided in the sheet cassette.
- FIGS. 4A and 4B are perspective views illustrating an operation for storing A5-size sheets in the sheet cassette.
- FIG. 5 is a perspective view illustrating a state in which a dedicated cassette is attached to the sheet cassette.
- FIGS. 6A and 6B are first views illustrating a configuration of the dedicated cassette.
- FIG. 7 is a second view illustrating the configuration of the dedicated cassette.
- FIG. 8 is a perspective view illustrating a state in which small-size sheets is set in the dedicated cassette.
- FIGS. 9A and 9B illustrate an operation for regulating side end positions of the small-size sheets stored in the dedicated cassette.
- FIG. 10 illustrates a state in which an interference member exists above a movable member provided in the dedicated cassette.
- FIG. 11 illustrates a state in which the movable member is swung in abutting contact with the interference member.
- FIG. 12 is a perspective view illustrating a different configuration of the dedicated cassette.
- FIG. 13 is a perspective view illustrating a state in which the dedicated cassette having the different configuration is attached to the sheet cassette.
- FIG. 1 illustrates an entire configuration of a Laser Beam Printer (LBP) that is of an example of an image forming apparatus including a sheet conveying apparatus according to an embodiment of the invention.
- LBP Laser Beam Printer
- a laser beam printer main body 50 A includes an image forming portion 50 B, and a sheet feeding apparatus 50 C is provided in a lower part of the printer main body 50 A.
- the sheet feeding apparatus 50 C feeds a sheet S, such as a recording sheet, which is stacked and stored in a sheet cassette 1 to the image forming portion 50 B.
- the image forming portion 50 B includes a process cartridge 57 , and the process cartridge 57 includes a photosensitive drum 57 a , a charger 57 b , a development sleeve 57 c , and a cleaner 57 d .
- the image forming portion 50 B also includes a laser scanner 58 that is of exposure unit for exposing a surface of the photosensitive drum 57 a to form an electrostatic latent image on the photosensitive drum 57 a.
- the printer main body 50 A also includes a transfer roller 59 and a fixing portion 60 .
- the transfer roller 59 abuts on the photosensitive drum 57 a , and the transfer roller 59 and the photosensitive drum 57 a constitute a transfer portion.
- the fixing portion 60 fixes a toner image, transferred by the transfer portion, onto the sheet S.
- the sheet feeding apparatus 50 C includes the sheet cassette 1 and a pickup roller 53 .
- the sheet cassette 1 is of a sheet storage portion that is detachably attached to the printer main body 50 A.
- the pickup roller 53 delivers the sheets S stacked on the sheet cassette 1 from the uppermost side.
- the sheet feeding apparatus 50 C also includes a pair of retard rollers 54 a and 54 b that separates and conveys the sheet S delivered by the pickup roller 53 .
- the photosensitive drum 57 a When the image forming operation is started, the photosensitive drum 57 a is rotated in an arrow direction, the surface of the photosensitive drum 57 a is charged by the charger 57 b , and a laser beam is emitted to the photosensitive drum 57 a from the laser scanner 58 based on the image information. Therefore, electrostatic latent image is formed on the photosensitive drum.
- toner that is properly charged according to the rotation of the development sleeve 57 c is supplied onto the photosensitive drum 57 a to adhere to the electrostatic latent image, whereby the electrostatic latent image is developed and visualized as a toner image.
- the pickup roller 53 is rotated to deliver the uppermost sheet S on the sheet cassette 1 .
- the pair of retard rollers 54 a and 54 b conveys the sheet S delivered from the pickup roller 53 , and a pair of registration rollers 56 that is at a stop performs a leading end positioning (skew feeding correction).
- the pair of registration rollers 56 conveys the sheet S to the transfer portion such that the sheet S is timed to the image formed on the photosensitive drum 57 a , and the transfer roller 59 transfers the image of the photosensitive drum 57 a to the sheet S.
- the fixing nip includes a heating roller 60 a and a pressure roller 60 b , which are provided in the fixing portion 60 .
- the unfixed toner image is fixed to the sheet surface by heating and pressurization.
- a discharge roller 61 discharges the sheet S, to which the toner image is already fixed, onto a discharge tray 62 .
- the sheet cassette 1 includes a cassette body 5 and an intermediate plate 6 .
- a sheet storage space 4 is formed to stack and store sheets having various sizes.
- the intermediate plate 6 is of a first sheet stacking portion that is provided to stack the sheets S while being able to be vertically swung.
- the intermediate plate 6 can be lifted and lowered about a swing shaft 43 by a swing mechanism (not illustrated).
- the sheet cassette 1 includes side regulating members 7 and 8 and a trailing end regulating member 9 .
- the side regulating members 7 and 8 are of a pair of width regulating plates, and the pair of width regulating plates is of a first regulating portion that regulates a side end position of the sheet.
- the trailing end regulating member 9 is of a regulating portion that regulates a trailing end position of the sheet.
- the side regulating members 7 and 8 and the trailing end regulating member 9 are movable according to the sheet size.
- the side regulating members 7 and 8 include racks 46 and 47 that are engaged with a pinion 11 , and the side regulating members 7 and 8 are moved in opposite directions to each other by the same amount using the racks 46 and 47 and the pinion 11 .
- the side regulating members 7 and 8 are moved in opposite directions to each other by the same amount, thereby feeding the sheet based on the center of the sheet cassette 1 .
- FIG. 3 illustrates positions of the side regulating members 7 and 8 and trailing end regulating member 9 when a large-size sheet, for example, an A4-size sheet is stored.
- a large-size sheet for example, an A4-size sheet
- each side of the side regulating members 7 and 8 is moved in the direction in which one of the side regulating members 7 and 8 is brought close to the other as illustrated in FIG. 4A . Therefore, the side regulating members 7 and 8 are moved toward the center of the sheet cassette 1 .
- the trailing end regulating member 9 is brought in abutting contact with the trailing end of the A5-size sheet while the side regulating members 7 and 8 are brought in abutting contact with the side end of the sheet, whereby the side end position and trailing end position of the A5-size sheet S 1 are positioned to complete the setting of the sheet S 1 . Therefore, the positioning of the sheet S 1 enables the sheet to be stably fed.
- the sheet having the A5 size or more can be stored in the sheet cassette 1 .
- a cassette 30 that is of an attachment dedicated to the small-size sheet is detachably attached to the intermediate plate 6 as illustrated in FIG. 5 .
- the cassette dedicated to the small-size sheet (hereinafter referred to as dedicated cassette) 30 can deal with the postcard-size, a 4-by-6-inch-size sheet, and a small-size sheet.
- a special sheet can also be stored in the dedicated cassette 30 .
- the dedicated cassette 30 that is of a sheet stacking unit includes a sheet stacking portion 14 , a latching projection 31 , and four insertion units 23 to 26 .
- the latching projection 31 is projected from a bottom of the sheet stacking portion 14 and extended in an attaching direction.
- the latching projection 31 and the four insertion units 23 to 26 are inserted from the attaching direction into a latching opening 32 and insertion holes 23 a to 26 a , which are made in the intermediate plate 6 as illustrated in FIG. 2 , which allows the dedicated cassette 30 to be detachably attached to the intermediate plate 6 .
- the dedicated cassette 30 includes a fixed member 19 , a movable member 13 , and rear-side wall 20 .
- the fixed member 19 is vertically provided on one of sides of the sheet stacking portion 14 and extended in the sheet feeding direction.
- the movable member 13 is movable in the width direction along the sheet stacking portion 14 . That is, in the embodiment, the dedicated cassette 30 includes the fixed member 19 and the movable member 13 , which are disposed as a second regulating portion while facing each other. The second regulating portion regulates the position in the width direction of the sheet stacked on the dedicated cassette 30 .
- a small-size-sheet storage space 22 is formed by a bottom of the sheet stacking portion 14 , the fixed member 19 , the rear-side wall 20 , and the movable member 13 .
- the movable member 13 is retained while being able to swing with respect to the sheet stacking portion 14 by a shaft 44 , and the shaft 44 is supported in a frame (not illustrated) provided on the movable member side of the sheet stacking portion 14 while the shaft 44 and the movable member 13 are slidable in the width direction.
- a hook portion 17 is provided in the movable member 13 , and one of ends of a spring 12 that is of a biasing member is latched in the hook portion 17 .
- the other end of the spring 12 is latched in a hook portion 16 provided in the sheet stacking portion 14 .
- an end portion 13 a is brought in abutting contact with a receiving portion vertically provided in the sheet stacking portion 14 while biased by the spring 12 , thereby regulating the position of the movable member 13 .
- FIG. 8 illustrates a state in which small-size sheets S 2 is set in the dedicated cassette 30 .
- a small-size sheet S 2 set in the dedicated cassette 30 one of the side end positions is regulated by moving the movable member 13 toward the fixed member side.
- the movable member 13 is moved to press the small-size sheet S 2 against the fixed member 19 , thereby feeding the small-size sheet S 2 based on one side of the fixed member 19 .
- FIGS. 8 , 9 A and 9 B movable-member hoods 34 and 35 are provided in the movable member 13 , and a hood 33 is provided in the fixed member 19 .
- the provision of the hoods 33 to 35 can prevent the small-size sheet S 2 whose side end positions are regulated by the movable member 13 and fixed member 19 from deviating from the dedicated cassette 30 .
- FIG. 8 , 9 A and 9 B fixed member receiving portions 37 and 38 that are of a positioning portion are projected from an outside wall surface of the fixed member 19 , and movable member receiving portions 39 and 40 that are of the positioning portion are projected from an outside wall surface of the movable member 13 .
- Abutment surfaces 37 a and 38 a and abutment surfaces 39 a and 40 a are formed into a flat shape.
- the abutment surfaces 37 a and 38 a abut on a regulating surface 7 a that regulates the sheet in the side regulating member 7 of the fixed member receiving portions 37 and 38
- the abutment surfaces 39 a and 40 a abut on a regulating surface 8 a that regulates the sheet in the side regulating member 8 of the movable member receiving portions 39 and 40 .
- a distance T from a regulating surface 19 c that regulates the sheet of the fixed member 19 to the abutment surfaces 37 a and 38 a of fixed member receiving portions (the positioning portions) 37 and 38 are set equal to a distance T from a regulating surface 13 c that regulates the sheet of the movable member 13 to the abutment surfaces 39 a and 40 a of the positioning portions 39 and 40 .
- the movable member 13 is moved to regulate the position of the small-size sheet S 2 set in the dedicated cassette 30 , and the side regulating members 7 and 8 are moved in the width direction. Therefore, as illustrated in FIG. 9A , the fixed member 19 and the movable member 13 moved to the position that regulates the small-size sheet S 2 are sandwiched between the side regulating members 7 and 8 while the fixed member receiving portions 37 and 38 and the movable member receiving portions 39 and 40 are interposed therebetween.
- the movable member 13 that regulates the movement in the width direction of the small-size sheet S 2 can be prevented from deviating from the regulating position in feeding the sheet. Therefore, the small-size sheet can stably be fed with the simple configuration without largely notching the intermediate plate 6 .
- the side regulating members 7 and 8 are moved in the opposite directions to each other by the same amount, and the sheet is fed based on the center of the sheet cassette 1 using the side regulating members 7 and 8 .
- the movable member 13 is moved to press the sheet S 2 against the fixed member 19 , thereby regulating one of the side end positions of the small-size sheet S 2 . That is, in the embodiment, the movable member 13 and the fixed member 19 are sandwiched between the side regulating members 7 and 8 that feed the sheet based on the center of the sheet cassette 1 , thereby feeding the small-size sheet S 2 based on one side of the fixed member 19 .
- the intermediate plate 6 is provided while being movable in the width direction with respect to the cassette body 5 . Therefore, even if the dedicated cassette 30 is fixed to the intermediate plate 6 , the dedicated cassette 30 can be moved in the width direction, and the position of the small-size sheet S 2 can be changed in the width direction.
- the intermediate plate 6 When the intermediate plate 6 is moved in the width direction, the small-size sheet S 2 that is moved based on one side of the sheet cassette 1 can be fed based on the center of the sheet cassette 1 .
- the intermediate plate 6 is fixed to the cassette body 5 in the width direction, the same effect can be obtained even if the dedicated cassette 30 is attached while being movable in the width direction with respect to the intermediate plate 6 .
- an interference member 41 exists above the dedicated cassette 30 .
- the number of small-size sheets S 2 is decreased to lift the intermediate plate 6 , the movable member 13 is lifted along with the dedicated cassette 30 as the intermediate plate 6 is lifted, and the movable member 13 is brought in abutting contact with the interference member 41 from below.
- the movable member 13 can be swung about the shaft 44 of FIG. 7 in the direction in which the intermediate plate 6 is lifted and lowered. Therefore, the movable member 13 is brought in abutting contact with the interference member 41 and, as illustrated in FIG. 11 , the movable member 13 is swung downward about the shaft 44 against the biasing force of the spring 12 of FIG. 7 . Because the number of small-size sheets S 2 becomes small when the intermediate plate 6 is lifted, the regulation in the width direction of the small-size sheet S 2 is maintained even if the movable member 13 is swung.
- the intermediate plate 6 is lifted when the sheet is run out in the sheet cassette 1 .
- the dedicated cassette 30 attached to the intermediate plate 6 in the lifted state collides with another component of the printer main body 50 A.
- a slope 42 in which the sheet cassette 1 can be drawn while the intermediate plate 6 is gently pushed down is placed in the fixed member 19 or the sheet stacking portion 14 .
- a positioning mechanism is provided in the sheet cassette 1 in order to position the side regulating members 7 and 8 , when the side regulating members 7 and 8 are moved to the positions that regulate the standard-size sheet.
- the side regulating members 7 and 8 are moved according to the positioning of the dedicated cassette 30 .
- the small-size-sheet regulating effect is reduced, when the side regulating members 7 and 8 are moved according to the positioning of the dedicated cassette 30 although the small-size sheet S 2 is regulated. Therefore, when the positions of the side regulating members 7 and 8 are close to the position at which the dedicated cassette 30 is used, desirably the positions of the side regulating members 7 and 8 when sandwiching the dedicated cassette 30 are set so as to avoid the positioning point performed by the positioning mechanism.
- the positions of the movable member 13 and fixed member 19 of the dedicated cassette 30 are regulated by the side regulating members 7 and 8 , so that the sheet can stably be fed with the simple configuration without decreasing the strength of the intermediate plate 6 .
- the intermediate plate 6 can be moved in the width direction with respect to the sheet cassette 1 or the dedicated cassette 30 can be moved with respect to the intermediate plate 6 such that the sheet stored in the dedicated cassette 30 is fed based on the center of the dedicated cassette 30 .
- the invention is not limited to the embodiment.
- a dedicated cassette 30 A may include a sheet stacking portion 14 A and two movable members 13 A and 13 B that can be moved in the width direction along the sheet stacking portion 14 A. Therefore, with such configuration, even if the dedicated cassette 30 A is not moved in the width direction, the small-size sheet stored in the dedicated cassette 30 A can be fed based on one side of the sheet cassette 1 or the center of the sheet cassette 1 .
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Abstract
A sheet feeding apparatus and an image forming apparatus are provided with a fixed member and a movable member, which regulate positions in a width direction of the sheet that is stacked on the dedicated cassette detachably attached to an intermediate plate, are provided while facing each other. The fixed member and the movable member moved to a position that regulates the sheet are regulated by side regulating members. The side regulating members that are movable in the width direction regulate the positions in the width direction of the sheet stacked on the intermediate plate.
Description
- This is a divisional of U.S. patent application Ser. No. 12/511,508 filed Jul. 29, 2009 and allowed Mar. 3, 2011.
- 1. Field of the Invention
- The present invention relates to a sheet feeding apparatus and an image forming apparatus, particularly to a sheet feeding apparatus in which a second sheet stacking portion is detachably attached to a first sheet stacking portion and an image forming apparatus.
- 2. Description of the Related Art
- Recently, an image forming apparatus such as a copying machine, a printer, and a facsimile, in which the sheet is fed from the sheet feeding apparatus to the image forming portion to form an image is widely spread. Usually, in the sheet feeding apparatus, a sheet cassette that is of a sheet storage portion is detachably attached to an apparatus main body, and the sheet stored in the sheet cassette is automatically fed to the image forming portion.
- In some of sheet cassettes used in the sheet feeding apparatus, an intermediate plate on which the sheets are stacked to press the sheet against a sheet feeding roller is provided while being able to be lifted and lowered. In the sheet cassette in which the intermediate plate is provided, a trailing end regulating member that regulates a position of a trailing end in a feeding direction of the sheet stacked and stored on the intermediate plate (hereinafter referred to as trailing end) is provided so as to store the sheets having different sizes. A side end regulating member is also provided to regulate a side end position in a direction (hereinafter referred to as width direction) orthogonal to the sheet feeding direction.
- In the sheet cassette, the sheet trailing end is regulated by the trailing end regulating member while the sheet side end is regulated by the side end regulating member, whereby the sheet leading end is always regulated at a predetermined position. Therefore, the sheet can stably be fed irrespective of the sheet size when the sheet cassette is stored in the apparatus main body.
- Recently, a demand to form an image in a small-size sheet that is of an irregular size sheet such as a 4-by-6-inch-size sheet and a postcard-size sheet in addition to a special sheet has been increased in the image forming apparatus such as the laser beam printer.
- However, for example, when the small-size sheet is set in the sheet cassette, the small-size sheet is located outside a range where the side end regulating member and the trailing end regulating member are moved. Therefore, when the small-size sheet is set in the sheet cassette, the position of the sheet cannot be regulated by the side end regulating member and the trailing end regulating member.
- In order to regulate the small-size sheet whose position cannot be regulated by the regulating member, for example, Japanese Patent Application Laid-Open No. 2005-263450 discloses a technique in which the side end regulating member can be moved to a position that regulates the small-size sheet. The intermediate plate is notched in the width direction in order to enable the side end regulating member to be moved in the width direction.
- Japanese Patent Application Laid-Open No. 11-217123 discloses a technique in which an attachment is attached to the side end regulating member. Japanese Patent Application Laid-Open No. 11-059925 discloses a technique in which a dedicated cassette that is of a small-size-sheet regulating member is detachably attached to the sheet cassette.
- However, in the conventional sheet feeding apparatus and image forming apparatus, when the intermediate plate is notched such that the side end regulating member can be moved in the width direction, it is necessary that the intermediate plate is largely notched in order to enable the side end regulating member to be moved to the position that regulates the small-size sheet. When the attachment is attached to the side end regulating member, it is necessary that the attachment is moved to the side end position of the small-size sheet. Therefore, it is necessary to largely notch the intermediate plate. A strength of the intermediate plate is decreased when the intermediate plate is largely notched.
- On the other hand, when the dedicated cassette is detachably attached to the sheet cassette, it is not necessary to largely notch the intermediate plate. However, the sheet cannot stably be fed because the side end regulating member that regulates the sheet position in the width direction is not provided in the dedicated cassette. Even if the side end regulating member is provided, a mechanism for fixing the side end regulating member moved to a side end regulating position is required to stably feed the sheet. When the mechanism is provided, a configuration of the dedicated cassette becomes complicated and cost is increased.
- The present invention provides a sheet feeding apparatus and an image forming apparatus, in which a sheet can stably be fed with a simple configuration without decreasing strength of an intermediate plate.
- A sheet feeding apparatus according to an aspect of the invention including a sheet stacking portion on which a sheet is stacked; a pair of first regulating portions that is provided while being movable in a width direction of the sheet in order to regulate a position in the width direction of the sheet stacked on the sheet stacking portion; a sheet stacking unit that is attached to the sheet stacking portion; and a pair of second regulating portions that regulates the position in the width direction of the sheet stacked on the sheet stacking unit, wherein at least one of the second regulating portions is movable in the width direction, and the pair of second regulating portions are regulated by the pair of first regulating portions, respectively.
- Accordingly, the position of the second regulating member of the second sheet stacking portion is regulated by the first regulating member that regulates the position of the sheet stacked on the first sheet stacking portion, so that the sheet can stably be fed with the simple configuration without decreasing the strength of the intermediate plate.
- Further features of the present invention will become apparent from the following description of exemplary embodiments with reference to the attached drawings.
-
FIG. 1 illustrates an entire configuration of a Laser Beam Printer (LBP) that is of an example of an image forming apparatus including a sheet conveying apparatus according to an embodiment of the invention. -
FIG. 2 is a perspective view illustrating a sheet cassette that is detachably attached to a printer main body of the laser beam printer. -
FIG. 3 is a perspective view illustrating a configuration for moving a side regulating plate provided in the sheet cassette. -
FIGS. 4A and 4B are perspective views illustrating an operation for storing A5-size sheets in the sheet cassette. -
FIG. 5 is a perspective view illustrating a state in which a dedicated cassette is attached to the sheet cassette. -
FIGS. 6A and 6B are first views illustrating a configuration of the dedicated cassette. -
FIG. 7 is a second view illustrating the configuration of the dedicated cassette. -
FIG. 8 is a perspective view illustrating a state in which small-size sheets is set in the dedicated cassette. -
FIGS. 9A and 9B illustrate an operation for regulating side end positions of the small-size sheets stored in the dedicated cassette. -
FIG. 10 illustrates a state in which an interference member exists above a movable member provided in the dedicated cassette. -
FIG. 11 illustrates a state in which the movable member is swung in abutting contact with the interference member. -
FIG. 12 is a perspective view illustrating a different configuration of the dedicated cassette. -
FIG. 13 is a perspective view illustrating a state in which the dedicated cassette having the different configuration is attached to the sheet cassette. - An exemplary embodiment of the invention will be described in detail with reference to the drawings.
-
FIG. 1 illustrates an entire configuration of a Laser Beam Printer (LBP) that is of an example of an image forming apparatus including a sheet conveying apparatus according to an embodiment of the invention. - Referring to
FIG. 1 , in alaser beam printer 50, a laser beam printer main body (hereinafter referred to as printer main body) 50A includes animage forming portion 50B, and asheet feeding apparatus 50C is provided in a lower part of the printermain body 50A. Thesheet feeding apparatus 50C feeds a sheet S, such as a recording sheet, which is stacked and stored in asheet cassette 1 to theimage forming portion 50B. - The
image forming portion 50B includes aprocess cartridge 57, and theprocess cartridge 57 includes aphotosensitive drum 57 a, acharger 57 b, adevelopment sleeve 57 c, and acleaner 57 d. Theimage forming portion 50B also includes alaser scanner 58 that is of exposure unit for exposing a surface of thephotosensitive drum 57 a to form an electrostatic latent image on thephotosensitive drum 57 a. - The printer
main body 50A also includes atransfer roller 59 and afixing portion 60. Thetransfer roller 59 abuts on thephotosensitive drum 57 a, and thetransfer roller 59 and thephotosensitive drum 57 a constitute a transfer portion. Thefixing portion 60 fixes a toner image, transferred by the transfer portion, onto the sheet S. - The
sheet feeding apparatus 50C includes thesheet cassette 1 and apickup roller 53. Thesheet cassette 1 is of a sheet storage portion that is detachably attached to the printermain body 50A. Thepickup roller 53 delivers the sheets S stacked on thesheet cassette 1 from the uppermost side. Thesheet feeding apparatus 50C also includes a pair ofretard rollers pickup roller 53. - Next, an image forming operation in the
laser beam printer 50 configured in this manner will be described. - When the image forming operation is started, the
photosensitive drum 57 a is rotated in an arrow direction, the surface of thephotosensitive drum 57 a is charged by thecharger 57 b, and a laser beam is emitted to thephotosensitive drum 57 a from thelaser scanner 58 based on the image information. Therefore, electrostatic latent image is formed on the photosensitive drum. - Then, toner that is properly charged according to the rotation of the
development sleeve 57 c is supplied onto thephotosensitive drum 57 a to adhere to the electrostatic latent image, whereby the electrostatic latent image is developed and visualized as a toner image. - On the other hand, in parallel with the toner image forming operation, the
pickup roller 53 is rotated to deliver the uppermost sheet S on thesheet cassette 1. The pair ofretard rollers pickup roller 53, and a pair ofregistration rollers 56 that is at a stop performs a leading end positioning (skew feeding correction). - Then, in the
image forming portion 50B, the pair ofregistration rollers 56 conveys the sheet S to the transfer portion such that the sheet S is timed to the image formed on thephotosensitive drum 57 a, and thetransfer roller 59 transfers the image of thephotosensitive drum 57 a to the sheet S. - Then, the sheet S to which the toner image is transferred is conveyed to a fixing nip. The fixing nip includes a
heating roller 60 a and apressure roller 60 b, which are provided in the fixingportion 60. In the fixing nip, the unfixed toner image is fixed to the sheet surface by heating and pressurization. Adischarge roller 61 discharges the sheet S, to which the toner image is already fixed, onto adischarge tray 62. - As illustrated in
FIG. 2 , thesheet cassette 1 includes acassette body 5 and anintermediate plate 6. In thecassette body 5, asheet storage space 4 is formed to stack and store sheets having various sizes. Theintermediate plate 6 is of a first sheet stacking portion that is provided to stack the sheets S while being able to be vertically swung. Theintermediate plate 6 can be lifted and lowered about aswing shaft 43 by a swing mechanism (not illustrated). Thesheet cassette 1 includesside regulating members end regulating member 9. Theside regulating members end regulating member 9 is of a regulating portion that regulates a trailing end position of the sheet. - The
side regulating members end regulating member 9 are movable according to the sheet size. As illustrated inFIG. 3 , theside regulating members racks pinion 11, and theside regulating members racks pinion 11. Theside regulating members sheet cassette 1. -
FIG. 3 illustrates positions of theside regulating members end regulating member 9 when a large-size sheet, for example, an A4-size sheet is stored. When a small-size sheet, for example, an A5-size sheet is stored, each side of theside regulating members side regulating members FIG. 4A . Therefore, theside regulating members sheet cassette 1. - After an A5-size sheet S1 is set between the
side regulating members FIG. 4B , the trailingend regulating member 9 is brought in abutting contact with the trailing end of the A5-size sheet while theside regulating members - The sheet having the A5 size or more can be stored in the
sheet cassette 1. When a user prints a postcard, acassette 30 that is of an attachment dedicated to the small-size sheet is detachably attached to theintermediate plate 6 as illustrated inFIG. 5 . For example, the cassette dedicated to the small-size sheet (hereinafter referred to as dedicated cassette) 30 can deal with the postcard-size, a 4-by-6-inch-size sheet, and a small-size sheet. A special sheet can also be stored in thededicated cassette 30. - As illustrated in
FIGS. 6A and 6B , thededicated cassette 30 that is of a sheet stacking unit includes asheet stacking portion 14, a latchingprojection 31, and fourinsertion units 23 to 26. The latchingprojection 31 is projected from a bottom of thesheet stacking portion 14 and extended in an attaching direction. The latchingprojection 31 and the fourinsertion units 23 to 26 are inserted from the attaching direction into a latchingopening 32 and insertion holes 23 a to 26 a, which are made in theintermediate plate 6 as illustrated inFIG. 2 , which allows thededicated cassette 30 to be detachably attached to theintermediate plate 6. - The
dedicated cassette 30 includes a fixedmember 19, amovable member 13, and rear-side wall 20. The fixedmember 19 is vertically provided on one of sides of thesheet stacking portion 14 and extended in the sheet feeding direction. Themovable member 13 is movable in the width direction along thesheet stacking portion 14. That is, in the embodiment, thededicated cassette 30 includes the fixedmember 19 and themovable member 13, which are disposed as a second regulating portion while facing each other. The second regulating portion regulates the position in the width direction of the sheet stacked on thededicated cassette 30. A small-size-sheet storage space 22 is formed by a bottom of thesheet stacking portion 14, the fixedmember 19, the rear-side wall 20, and themovable member 13. - As illustrated in
FIG. 7 , themovable member 13 is retained while being able to swing with respect to thesheet stacking portion 14 by ashaft 44, and theshaft 44 is supported in a frame (not illustrated) provided on the movable member side of thesheet stacking portion 14 while theshaft 44 and themovable member 13 are slidable in the width direction. - A
hook portion 17 is provided in themovable member 13, and one of ends of aspring 12 that is of a biasing member is latched in thehook portion 17. The other end of thespring 12 is latched in ahook portion 16 provided in thesheet stacking portion 14. In themovable member 13 in which thespring 12 is latched, anend portion 13 a is brought in abutting contact with a receiving portion vertically provided in thesheet stacking portion 14 while biased by thespring 12, thereby regulating the position of themovable member 13. -
FIG. 8 illustrates a state in which small-size sheets S2 is set in thededicated cassette 30. In a small-size sheet S2 set in thededicated cassette 30, one of the side end positions is regulated by moving themovable member 13 toward the fixed member side. Themovable member 13 is moved to press the small-size sheet S2 against the fixedmember 19, thereby feeding the small-size sheet S2 based on one side of the fixedmember 19. - In
FIGS. 8 , 9A and 9B, movable-member hoods movable member 13, and ahood 33 is provided in the fixedmember 19. In feeding the sheet, the provision of thehoods 33 to 35 can prevent the small-size sheet S2 whose side end positions are regulated by themovable member 13 and fixedmember 19 from deviating from thededicated cassette 30. InFIG. 8 , 9A and 9B, fixedmember receiving portions member 19, and movablemember receiving portions movable member 13. Abutment surfaces 37 a and 38 a and abutment surfaces 39 a and 40 a are formed into a flat shape. The abutment surfaces 37 a and 38 a abut on a regulatingsurface 7 a that regulates the sheet in theside regulating member 7 of the fixedmember receiving portions surface 8 a that regulates the sheet in theside regulating member 8 of the movablemember receiving portions surface 19 c that regulates the sheet of the fixedmember 19 to the abutment surfaces 37 a and 38 a of fixed member receiving portions (the positioning portions) 37 and 38 are set equal to a distance T from a regulatingsurface 13 c that regulates the sheet of themovable member 13 to the abutment surfaces 39 a and 40 a of thepositioning portions - An operation for regulating the side end position of the small-size sheet S2 stored in the
dedicated cassette 30 will be described. - As illustrated in
FIG. 8 , themovable member 13 is moved to regulate the position of the small-size sheet S2 set in thededicated cassette 30, and theside regulating members FIG. 9A , the fixedmember 19 and themovable member 13 moved to the position that regulates the small-size sheet S2 are sandwiched between theside regulating members member receiving portions member receiving portions - When the fixed
member 19 and themovable member 13 are sandwiched between theside regulating members movable member 13 that regulates the movement in the width direction of the small-size sheet S2 can be prevented from deviating from the regulating position in feeding the sheet. Therefore, the small-size sheet can stably be fed with the simple configuration without largely notching theintermediate plate 6. - In the embodiment, as described above, the
side regulating members sheet cassette 1 using theside regulating members movable member 13 is moved to press the sheet S2 against the fixedmember 19, thereby regulating one of the side end positions of the small-size sheet S2. That is, in the embodiment, themovable member 13 and the fixedmember 19 are sandwiched between theside regulating members sheet cassette 1, thereby feeding the small-size sheet S2 based on one side of the fixedmember 19. - Further, in the embodiment, the
intermediate plate 6 is provided while being movable in the width direction with respect to thecassette body 5. Therefore, even if thededicated cassette 30 is fixed to theintermediate plate 6, thededicated cassette 30 can be moved in the width direction, and the position of the small-size sheet S2 can be changed in the width direction. - When the
intermediate plate 6 is moved in the width direction, the small-size sheet S2 that is moved based on one side of thesheet cassette 1 can be fed based on the center of thesheet cassette 1. When theintermediate plate 6 is fixed to thecassette body 5 in the width direction, the same effect can be obtained even if thededicated cassette 30 is attached while being movable in the width direction with respect to theintermediate plate 6. - As illustrated in
FIG. 10 , sometimes aninterference member 41 exists above thededicated cassette 30. When theinterference member 41 exists, the number of small-size sheets S2 is decreased to lift theintermediate plate 6, themovable member 13 is lifted along with thededicated cassette 30 as theintermediate plate 6 is lifted, and themovable member 13 is brought in abutting contact with theinterference member 41 from below. - At this point, as described above, the
movable member 13 can be swung about theshaft 44 ofFIG. 7 in the direction in which theintermediate plate 6 is lifted and lowered. Therefore, themovable member 13 is brought in abutting contact with theinterference member 41 and, as illustrated inFIG. 11 , themovable member 13 is swung downward about theshaft 44 against the biasing force of thespring 12 ofFIG. 7 . Because the number of small-size sheets S2 becomes small when theintermediate plate 6 is lifted, the regulation in the width direction of the small-size sheet S2 is maintained even if themovable member 13 is swung. - The
intermediate plate 6 is lifted when the sheet is run out in thesheet cassette 1. When thesheet cassette 1 is drawn in the width direction to refill the sheet while theintermediate plate 6 is lifted, sometimes thededicated cassette 30 attached to theintermediate plate 6 in the lifted state collides with another component of the printermain body 50A. In such cases, when thededicated cassette 30 collides with another component, desirably aslope 42 in which thesheet cassette 1 can be drawn while theintermediate plate 6 is gently pushed down is placed in the fixedmember 19 or thesheet stacking portion 14. - In order to improve usability, sometimes a positioning mechanism is provided in the
sheet cassette 1 in order to position theside regulating members side regulating members side regulating members dedicated cassette 30 is used, sometimes theside regulating members dedicated cassette 30. - Possibly, the small-size-sheet regulating effect is reduced, when the
side regulating members dedicated cassette 30 although the small-size sheet S2 is regulated. Therefore, when the positions of theside regulating members dedicated cassette 30 is used, desirably the positions of theside regulating members dedicated cassette 30 are set so as to avoid the positioning point performed by the positioning mechanism. - As described above, the positions of the
movable member 13 and fixedmember 19 of thededicated cassette 30 are regulated by theside regulating members intermediate plate 6. - In the embodiment described above, the
intermediate plate 6 can be moved in the width direction with respect to thesheet cassette 1 or thededicated cassette 30 can be moved with respect to theintermediate plate 6 such that the sheet stored in thededicated cassette 30 is fed based on the center of thededicated cassette 30. However, the invention is not limited to the embodiment. - For example, sometimes the range where the
intermediate plate 6 can be moved is restricted with respect to thesheet cassette 1, or sometimes the range where thededicated cassette 30 can be moved is restricted with respect to theintermediate plate 6. In such cases, as illustrated inFIGS. 12 and 13 , a dedicated cassette 30A may include asheet stacking portion 14A and twomovable members sheet stacking portion 14A. Therefore, with such configuration, even if the dedicated cassette 30A is not moved in the width direction, the small-size sheet stored in the dedicated cassette 30A can be fed based on one side of thesheet cassette 1 or the center of thesheet cassette 1. - While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. The scope of the following claims is to be accorded the broadest interpretation so as to encompass all such modifications and equivalent structures and functions.
- This application claims the benefit of Japanese Patent Application No. 2008-198732, filed Jul. 31, 2008, which is hereby incorporated by reference herein in its entirety.
Claims (6)
1. A sheet feeding apparatus comprising:
a sheet stacking portion on which sheets are stacked;
a pair of first regulating portions that is provided while being movable in a width direction of the sheet to regulate a position in the width direction of the sheets stacked on the sheet stacking portion;
a sheet stacking unit that is attached to the sheet stacking portion;
a pair of second regulating portions that is provided on the sheet stacking unit to regulate the position in the width direction of the sheet stacked on the sheet stacking unit, and
at least one of the second regulating portions is movable in the width direction,
wherein at least one of the sheet stacking portion or the sheet attacking unit is movable in the width direction, and
the pair of second regulating portions are regulated by the pair of first regulating portions, respectively.
2. The sheet feeding apparatus according to claim 1 , further comprising positioning portions, provided in the pair of second regulating portions while the sheet stacking unit is attached to the sheet stacking portion, abutting the pair of first regulating portions respectively, and
wherein the positioning portions are equal to each other in a distance from a sheet regulating surface of the second regulating portion to a sheet regulating surface of the first regulating portion.
3. The sheet feeding apparatus according to claim 1 , wherein a small-size sheet whose position in the width direction cannot be regulated by the first regulating portion is stacked on the sheet stacking unit.
4. An image forming apparatus comprising:
an image forming portion that forms an image in a sheet; and
a sheet feeding apparatus that feeds the sheet to the image forming portion,
wherein the sheet feeding apparatus includes:
a sheet stacking portion on which the sheets are stacked;
a pair of first regulating portions that is provided while being movable in a width direction of the sheet to regulate a position in the width direction of the sheet stacked on the sheet stacking portion;
a sheet stacking unit that is attached to the sheet stacking portions;
a pair of second regulating portions that is provided on the sheet stacking unit to regulate the position in the width direction of the sheet stacked on the sheet stacking unit, and
at least one of the second regulating portions is movable in the width direction,
wherein at least one of the sheet stacking portion or the sheet stacking unit is movable in the width direction, and
the second regulating portions are regulated by the pair of first regulating portions, respectively.
5. The image forming apparatus according to claim 4 , further comprising positioning portions, provided in the pair of second regulating portions while the sheet stacking unit is attached to the sheet stacking portion, abutting the pair of first regulating portions, respectively, and
the positioning portions are equal to each other in a distance from a sheet regulating surface of the second regulating portion to sheet regulating surface of the first regulating portion.
6. The image forming apparatus according to claim 4 , wherein a small-size sheet whose position in the width direction cannot be regulated by the first regulating portion is stacked on the sheet stacking unit.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/111,997 US20110221121A1 (en) | 2008-07-31 | 2011-05-20 | Sheet feeding apparatus and image forming apparatus |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008198732A JP5171462B2 (en) | 2008-07-31 | 2008-07-31 | Sheet feeding apparatus and image forming apparatus |
JP2008-198732 | 2008-07-31 | ||
US12/511,508 US7967287B2 (en) | 2008-07-31 | 2009-07-29 | Sheet feeding apparatus and image forming apparatus |
US13/111,997 US20110221121A1 (en) | 2008-07-31 | 2011-05-20 | Sheet feeding apparatus and image forming apparatus |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/511,508 Division US7967287B2 (en) | 2008-07-31 | 2009-07-29 | Sheet feeding apparatus and image forming apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
US20110221121A1 true US20110221121A1 (en) | 2011-09-15 |
Family
ID=41607517
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/511,508 Expired - Fee Related US7967287B2 (en) | 2008-07-31 | 2009-07-29 | Sheet feeding apparatus and image forming apparatus |
US13/111,997 Abandoned US20110221121A1 (en) | 2008-07-31 | 2011-05-20 | Sheet feeding apparatus and image forming apparatus |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/511,508 Expired - Fee Related US7967287B2 (en) | 2008-07-31 | 2009-07-29 | Sheet feeding apparatus and image forming apparatus |
Country Status (4)
Country | Link |
---|---|
US (2) | US7967287B2 (en) |
JP (1) | JP5171462B2 (en) |
KR (2) | KR101061297B1 (en) |
CN (1) | CN101638182B (en) |
Cited By (6)
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US20110291349A1 (en) * | 2010-05-28 | 2011-12-01 | Seiko Epson Corporation | Medium accommodation cassette and recording apparatus |
US8419012B2 (en) * | 2011-03-11 | 2013-04-16 | Brother Kogyo Kabushiki Kaisha | Recording-sheet retaining device |
US9010748B2 (en) | 2012-07-18 | 2015-04-21 | Canon Kabushiki Kaisha | Sheet feeding apparatus and image forming apparatus |
US10486921B2 (en) | 2017-02-06 | 2019-11-26 | Canon Kabushiki Kaisha | Sheet accommodating device and image forming apparatus |
US10543997B2 (en) | 2017-08-22 | 2020-01-28 | Canon Kabushiki Kaisha | Sheet feeding apparatus and image forming apparatus |
CN110861938A (en) * | 2018-08-27 | 2020-03-06 | 夏普株式会社 | Sheet feeding device and image forming apparatus |
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US20110262198A1 (en) * | 2010-04-21 | 2011-10-27 | Toshiba Tec Kabushiki Kaisha | Sheet holding device and image forming apparatus (pinion holder in sheet feeder cassette) |
JP5797236B2 (en) | 2013-07-22 | 2015-10-21 | キヤノン株式会社 | Sheet feeding apparatus and image forming apparatus |
JP6468228B2 (en) * | 2016-03-25 | 2019-02-13 | 京セラドキュメントソリューションズ株式会社 | Sheet storage device and image forming apparatus |
US10988332B2 (en) * | 2017-08-31 | 2021-04-27 | Seiko Epson Corporation | Processing apparatus and feed unit |
WO2020222741A1 (en) * | 2019-04-29 | 2020-11-05 | Hewlett-Packard Development Company, L.P. | Output tray fins |
JP7334522B2 (en) * | 2019-07-25 | 2023-08-29 | セイコーエプソン株式会社 | Media feeder |
JP7360618B2 (en) * | 2019-10-23 | 2023-10-13 | 株式会社リコー | Attachments, feeding devices and image forming devices |
JP2022114159A (en) * | 2021-01-26 | 2022-08-05 | 京セラドキュメントソリューションズ株式会社 | Paper feed cassette and image formation apparatus |
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Also Published As
Publication number | Publication date |
---|---|
KR101061297B1 (en) | 2011-08-31 |
JP2010037006A (en) | 2010-02-18 |
JP5171462B2 (en) | 2013-03-27 |
KR101161998B1 (en) | 2012-07-03 |
CN101638182B (en) | 2012-05-23 |
US20100025923A1 (en) | 2010-02-04 |
KR20110052559A (en) | 2011-05-18 |
US7967287B2 (en) | 2011-06-28 |
KR20100014127A (en) | 2010-02-10 |
CN101638182A (en) | 2010-02-03 |
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