Canon Kabushiki Kaisha

Seikosha Co., Ltd.

Akira Matsushima

Yasuhiro Uchida

Minoru Kawanishi

Shunsuke Okazaki

Makoto Izumi

Kenji Watanabe

Motohiro Furusawa

Masaki Iwase

Eiji Wakiyama

Masato Suzuki

Hiroki Kato

Takashi Kuwata

Keita Nakajima

Takateru Ohkubo

Shigeo Murayama

Kiyoharu Yoshioka

Kenichiro Isobe

Mitsuo Tashiro

Satoshi Koga

Masatoshi Yoshida

Hidehiro Ushiozu

Takaaki Kawade

Kentarou Tomoe

Hirofumi Hori

Kazuya Morohashi

Hitomi Suzuki

A sheet storage apparatus attached to an apparatus body in an attaching direction includes a sheet storage portion configured to store a sheet, a moving unit movably supported by the sheet storage portion in a moving direction parallel to the attaching direction, wherein the moving unit includes a regulation member and an extending member extending in the moving direction, the regulation member including a regulation surface regulating a position, in the moving direction, of the sheet stored in the sheet storage portion, and a first bonding surface extending along the moving direction, the extending member including a second bonding surface extending parallel to the first bonding surface, and wherein the first bonding surface and the second bonding surface are configured to be bonded to each other by adhesive.

Sheet storage apparatus and image forming apparatus

A sheet supporting apparatus includes a sheet supporting unit having a sheet supporting portion including a supporting surface on which a sheet is supported, and a first engagement unit attached to the sheet supporting portion, and a second engagement unit to draw in the sheet supporting unit toward an attaching position where the sheet supporting unit is attached to an apparatus body. The first engagement unit includes a first engagement portion, a base portion supported by the sheet supporting portion, and a holder that is supported movably in a perpendicular direction perpendicular to the supporting surface by the base portion and configured to hold the first engagement portion. The base portion supports the holder swingably around a swing shaft that extends in a direction orthogonal to both the perpendicular direction and an inserting direction in which the sheet supporting unit is inserted.

Sheet supporting apparatus and image forming apparatus

A sheet feeding apparatus includes an apparatus body, a drawer portion including a first contact portion, a feeding portion, and a pivot member configured to pivot between a first position and a second position, the pivot member constituting a part of a conveyance path at the first position, wherein the pivot member does not overlap a moving path of the drawer portion in a case where the pivot member is located at the first position, and overlaps the moving path in a case where the pivot member is located at the second position. The pivot member includes a second contact portion that pivots the pivot member from the second position toward the first position while being in sliding contact with the first contact portion in a case where the pivot member is located at the second position and the drawer portion is being inserted into the apparatus body.

Sheet feeding apparatus and image forming apparatus

A sheet feeding apparatus includes a sheet accommodating unit, a sheet feeding unit, a first lifting portion, a second lifting portion, and a linear member configured to liftably support the first lifting portion and the second lifting portion, and stretched between the first lifting portion and the second lifting portion on a lower side of the stacking surface. In addition, a first winding unit, a second winding unit, and an adjustment member adjust both a first distance of the linear member between the first winding unit and the first lifting portion and a second distance of the linear member between the second winding unit and the second lifting portion.

A sheet feeding apparatus is provided with a disengaging mechanism configured to disengage a conveyance member and a separating member to be apart from each other. Either one of the conveyance member and the separating member is provided in a unit, which is attached to an apparatus body and is configured to be detached from the apparatus body toward a downstream side in the sheet conveyance direction, while the other provided in the apparatus body. A restriction portion is configured to restrict the unit from being attached to and detached from the apparatus body in a state where the conveyance member and the separating member are in contact with each other and to permit the unit to be attached to and detached from the apparatus body in a state where the conveyance member and the separating member are disengaged by the disengaging mechanism.

A sheet supporting apparatus includes a body, a supporting portion configured to be held in an elevating manner by the body and to support a sheet, a sheet regulation portion regulating a position of the sheet supported on the supporting portion, a movement portion capable of moving between a first position where the sheet regulation portion regulates the position of the sheet supported on the supporting portion, and a second position where the supporting portion is regulated from elevating with respect to the body, and a movement regulation unit regulating the movement portion from moving to the second position.

A sheet storage apparatus includes a sheet storage portion and a regulating member configured to regulate positions of a sheet that is stored in the sheet storage portion. The regulating member includes a regulating portion configured to abut against the sheet. The regulating member is moved to a first regulating position on which the regulating portion regulates an end portion in a first direction of a first sheet having a first size. In addition, the regulating member is moved to a second regulating position on which the regulating portion regulates an end portion, in a second direction orthogonal to the first direction, of a second sheet having a second size different from the first size.

The present invention provides a sheet feeding apparatus capable of feeding sheets at a proper position without a regulating member being bent even if a cassette unit is closed in a state in which a large volume of sheets are stacked. A large-volume feeding deck includes a non-reference-side regulating plate, an external casing plate, and positioning members, which are movable relative to the cassette unit.

Sheet feeding apparatus and image forming apparatus including the same

A sheet storing portion is maintained in a state in which a sheet stacking portion on which sheets are stacked is electrically insulated, when the sheet storing portion is contained in a containing portion of an image forming apparatus body at the time of formation of an image. The sheet stacking portion is switched from the insulation state to a grounding state in which the sheet stacking portion is grounded through a ground portion by a switching portion through an operation of drawing the sheet storing portion.

Image forming apparatus that electrically grounds the sheet cassette upon withdrawal of the sheet cassette

A sheet stacking portion is provided in a sheet storing portion in which sheets are stored. The sheet stacking portion is suspended by a wire which is wound up and wound off. The sheet stacking portion is raised and lowered by winding up and winding off the wire. Then, when the wire is in a slack state, a fixing portion fixes the sheet stacking portion to the sheet storing portion. When the wire is in a tensioned state, the fixing of the sheet stacking portion is released.

When a retard roller is rotating in a sheet feeding direction, the rotation is transmitted to a pickup roller and the pickup roller rotates in a direction for conveying the sheet. When the retard roller is rotating in a direction opposite to the sheet feeding direction or is stationary, the pickup roller does not feed the sheet. Therefore, in a successive feeding operation, the sheet to be fed next is always conveyed such that the leading end thereof reaches a nip position between a feed roller and the retard roller. Therefore, the intervals between the sheets are uniform in the successive feeding operation.

The present invention relates a sheet feeding apparatus with a lifting and lowering mechanism in a sheet deck, which includes abutting portionstowhich makes wire hanging portionstoof a sheet stacking tableabut thereon and makes the sheet stacking tablelockable with respect to a storing portion. The mechanism also includes a pulse motorand a one-way clutch. A controllerdrives the pulse motorto be rotated in a lifting direction of the sheet stacking table, further drives the pulse motorto be rotated in the same direction even after the wire hanging portionstoabut on the abutting portionstoto cause the pulse motorto step out, and renders the pulse motornon-conductive. Thus, the wire hanging portions is locked to abut on the abutting portions.

A sheet feeding apparatus, in which a drive motor rotates a pickup roller, and a drive transmission portion provided between the drive motor and the pickup roller transmits a drive from the drive motor to the pickup roller. During sheet feeding, one of the drive motor and the drive transmission portion causes the pickup roller to perform an intermittent drive of iterating the drive and a stop, so that a sheet is gradually deflected between the pickup roller and separation claws.

Growing community of inventors

Susono, Japan

Akira Matsushima