Canon Kabushiki Kaisha

Yasuyoshi Hayakawa

Masayoshi Fukatsu

Takashi Kuwata

Tsuyoshi Waragai

Tomoyuki Araki

Atsushi Ogata

Teruo Komatsu

Kenichiro Isobe

Junichi Sekiyama

Hironobu Ata

Naoki Asano

Kaoru Sato

Masato Suzuki

Tomio Noguchi

Atsushi Kubota

Hironobu Isobe

Kazushi Nishikata

Hiroo Kobayashi

Masanobu Kanoto

Yutaka Kikuchi

Masao Amano

Hisayuki Tomura

Kei Sawanaka

Kazuhide Kudo

Kazunori Takashima

Akio Nemoto

Tadashi Yagi

Hitoshi Fujino

Nobukazu Adachi

Takeshi Setoriyama

Ryukichi Inoue

Yoshihiko Kitahara

Akihiro Toma

Takamasa Sawada

Mitsuhide Takamura

Masanori Yamagata

Hitoshi Ishihama

Kenichi Horikoshi

Kazuhiro Nomoto

Osamu Ohuchi

Osamu Hoshii

Tetsuro Onuki

The detachment of a feed roller rotatably supported by a holding portion provided in the main body of an apparatus, and held detachably in the axial direction thereof is restricted by a locking device. The locking device is made movable to a lock position and a lock releasing position for permitting the detachment of the feed roller. Further, when the locking device is in the lock releasing position when a sheet stacking portion is mounted, the locking device is moved to the lock position by a position changeover device in operative association with the mounting operation of the sheet stacking portion.

Sheet feeding apparatus and image forming apparatus with sheet feeding cassette and associated locking means

Sheet feeding apparatus and image forming apparatus

A sheet processing apparatus includes a first intermediate stacking portion which stacks a conveyed sheet and which performs process to the sheet, a stapler which performs process to the sheet on the first intermediate stacking portion, a second intermediate stacking portion which is located on an upstream side in a conveying direction of the stapler and which is capable of temporarily storing the conveyed sheet, and an intermediate roller pair which conveys the sheet on the second intermediate stacking portion to the first intermediate stacking portion. The sheet stacked on the first intermediate stacking portion and the sheet temporarily stored in the second intermediate stacking portion overlap each other.

Sheet processing apparatus and image forming apparatus

The object of the present invention is to provide a sheet processing apparatus for passing sheets between an upper jaw and a lower jaw of a binder that is fixed on a intermediate stacking portion and stapling the ends of the sheet, wherein binding processing is possible for a large number of sheets and the problems of paper jams due to inclining or poor alignment are solved and which has a small size, is low in cost and is highly reliable. In order to achieve the above object, a typical configuration of the sheet processing apparatus of the present invention comprises: a conveyance portion which conveys sheets; an intermediate stacking portion which temporarily stacks sheets conveyed from the conveyance portion; and a binder which performs a binding process for binding the sheets stacked in the intermediate stacking portion, and the binder is fixed at one side of the intermediate stacking portion and the sheet which is conveyed from the conveyance portion passes the opening of the binder and is stacked in the intermediate stacking portion; the conveyance portion comprises a plurality of drive rollers in the direction that intersects the conveyance direction; and the drive rollers other than the drive roller that is closest to the binder form conveyance roller pairs with driven rollers.

An image processing apparatus ejects the sheet to witch image processing unit perform to an ejection tray or a staple stacker by a pair of ejection rollers and the like. A sheet path for guiding the sheet to the ejection rollers is opened and closed in conjunction with slide movement of the ejection tray when the ejection tray is attached to a main body of the apparatus, and the sheet path is opened and closed in conjunction with the slide movement of a staple stacker when the staple stacker is attached to the main body of the apparatus.

Image processing apparatus

This invention provides a sheet processing apparatus for passing sheets between an upper jaw and a lower jaw of a binder fixed on an intermediate stacking portion and for binding the ends of the sheets, wherein binding processing is possible for a large number of sheets and the problems of paper jams due to inclining or poor alignment are solved. The apparatus has a small size, is low in cost, and is highly reliable.

A sheet post-treating apparatus is provided with a discharged sheet stacking tray displaceably provided in a casing portion for stacking thereon sheets discharged from the casing portion, and a holding portion for holding the discharged sheet stacking tray in a first position and a second position overlying the first position, and is designed such that the sheets are stacked on the discharged sheet stacking tray when in the first position, and therefore, when the sheet post-treating apparatus is incorporated into a printer and a cartridge in the printer is to be interchanged with a cartridge cover opened, a user can retract the discharged sheet stacking tray to the second position to thereby interchange the cartridge.

Discharge sheet stacking apparatus and image forming apparatus provided with the same

A sheet processing apparatus, which is configured in a simple construction and at low cost, includes a first sheet stacking portion for temporarily stacking a sheet discharged thereon, an alignment member for aligning the sheet discharged on the first sheet stacking portion, a sheet processing member for performing a predetermined process on the sheet stacked on the first sheet stacking portion, and a second sheet stacking portion located substantially vertically below the first sheet stacking portion. The alignment member acts to cause the aligned sheet to drop to the second sheet stacking portion.

Sheet processing apparatus above image forming means and image forming apparatus

A sheet after-treatment device equipped with a stapler main body which staples sheets fed between upper and lower jaws in an opened state with a staple by closing the upper and lower jaws, and a holder for holding the stapler main body, in which a sheet transport guide surface of an upstream-side portion of the holder and the lower jaw of the stapler main body are arranged in the area where the sheets are transported, and the sheet transport guide surface of the upstream-side portion of the stapler main body is situated above the lower jaw.

Sheet after-treatment device and image forming apparatus equipped with the device

An image reader includes a first image-reader unit, mounted on a body of the image reader, for reading image information of an original document on a first image-reader section, a closing unit which is openably supported on the body of the image reader through a closing device, a second image-reader unit, mounted on the closing unit, for reading image information of an original on a second image-reader section, and a closed-state detector for detecting a closed state of the closing unit. The closed-state detector includes a photoemitter, a photodetector, and a light-blocking unit which blocks a light beam traveling from the photoemitter to the photodetector, by moving in operative association with the opening and closing operation of the closing unit.

Image reader with a closed-state detector and image forming apparatus using same

An aligning device movable to a first position constituting a first sheet stacking portion for supporting a delivered sheet and a second position in which the sheet is not supported is provided downstream of a pair of delivery rollers, and the pair of delivery rollers are designed to be capable of assuming a first state in which they are capable of delivering the sheet, and a second state in which rollers constituting the pair of delivery rollers are spaced apart from each other. When the pair of delivery rollers are in the first state and the aligning device is in the first position, a sheet aligning and stacking portion for making the alignment of the sheet by the aligning device possible is defined by the first stacking portion and the sheet transport path between a reference wall and the pair of delivery rollers.

Sheet treating apparatus and image forming apparatus having the same

An object of the present invention is to provide an image reading apparatus that has first reading device for reading a first surface of an original, and second reading device for reading a second surface opposite to the first surface of the original, the first reading device and the second reading device being provided on the first surface side and the second surface side, respectively, with the original as a boundary, the second reading device including a light source and a reading member for reading image light from the original irradiated by the light source, the reading member being provided separately from a vertical line passing through the light source.

Image reading apparatus

Growing community of inventors

Mishima, Japan

Yasuyoshi Hayakawa