Canon Kabushiki Kaisha

Tokyo Shibaura Denki Kabushiki Kaisha

Chikara Sato

Yasuo Fukazu

Tadayoshi Nakayama

Norifumi Miyake

Masatoshi Yaginuma

Katsuji Yoshimura

Mitsushige Murata

Katsuya Yamazaki

Tsuyoshi Moriyama

Kiyoshi Okamoto

Kenichi Nagasawa

Susumu Kozuki

Takayuki Fujii

Akimaro Yoshida

Shinichi Nakamura

Manabu Yamauchi

Masakazu Hiroi

Hiroyuki Kimura

Tomohito Nakagawa

Kenji Kobayashi

Yoshinori Isobe

Tsutomu Fukatsu

Yoshihiro Nakatani

Tomohiko Sasatani

Hisataka Hirose

Yuzoh Matsumoto

Koji Takahashi

Hiroo Edakubo

Masaaki Inoo

Hisashi Ishikawa

Yasoji Suzuki

Noriyoshi Ueda

Tetsuya Iida

Toshiyuki Masui

Tatsuo Sakaue

Yuichi Yamamoto

Nobuaki Miyahara

Masanori Miyata

Tokuharu Kaneko

Katsuaki Hirai

Yoshifumi Takehara

Eiji Masuda

Kyoji Tamura

Hiromichi Tsujino

Yoshio Mizuno

Shunji Sato

Takeshi Sekiya

Hideyuki Makitani

Toshiya Kanazawa

Yuji Morishige

Takuya Terae

Yasuhide Hishikawa

Koji Doji

A sheet detecting apparatus provided with a light emitter and a light receiver for receiving light emitted from the light emitter through a sheet conveying path, wherein the light receiver detects any change in a quantity of light from the light emitter caused by a sheet passing on the conveying path intercepting the light emitted from the light emitter, to thereby detect the presence or absence of the sheet is provided with a V/I converting circuit for driving the light emitter, a comparing circuit for effecting negative feedback on the V/I converting circuit by an output signal, and changing the quantity of light of the light emitter, and a limiter circuit for applying a limitation to the negative feedback effected on the V/I converting circuit by the comparing circuit.

Sheet feeding apparatus

The present invention provides a sheet process device capable of performing a sheaf discharge operation to discharge sheaves of sheets stacked on a process tray to a stack tray, without discharging a next sheet to the process tray during the sheaf discharge operation and stopping an operation on a body side of an image formation apparatus. In the sheet process device, for example, in a case where an original consisting of six sheets of paper is carried, the first to third sheets are stacked on the process tray as they are without any designation, and the following fourth sheet is designated as a sheaf discharge sheet since it is the sheet two before the final sheet of the sheaf, whereby the sheaf discharge of the first to fourth sheets is performed. The fifth sheet after the sheaf discharge is designated as a wind sheet since a value of a wind counter has been set to be '2'. Then, when the fifth sheet is stacked on the process tray together with the sixth sheet designated as the final sheet of the sheaf, the sheaf discharge is performed.

Sheet process device once stacking received sheets on first stack means and then transferring them to second stack means

There is provided a data processing apparatus comprising an input means for inputting image data, a memory means for storing the data input by the input means, an output means for outputting the data stored in the memory means, by a predetermined operation, a judgment means for judging whether or not there is the data not yet output by the output means for a predetermined time in the memory means and a transfer means for transferring, in a case where the judgment means judged that there is the data not yet output for the predetermined time, the data stored in the memory means to an another device. Therefore, in a case where a user does not instruct to output the data for a long time and thus it must be kept storing the image data in the memory means, it can be prevented a conventional problem that another processes can not be performed for lack of a remaining free capacity in the memory means.

Data processing apparatus and method

The present invention provides an image formation apparatus to which a postprocess unit requiring a discharge condition that a transfer member of which image formation face is being turned downward is discharged and a binding position at a time of binding the member at its trailing edge is being at the left of the image formation face can be installed. On a platen glass, an original is carried in such a state as its read face is opposite to an upper face of the glass, and an image on the read face of the original is read by a scanner supported at a running read position when the original passes the running read position. Then, through a mirror image process, it is formed on an image formation face (upper face) of a sheet the read image of whcih direction is the same as that of the set original. When the image-formed sheet is discharged externally by the reverse sheet discharge control, the sheet is discharged in such a state as its face is being turned downward.

Image formation apparatus

An image forming apparatus has a sheet processing unit for feeding a cover sheet and a folder for folding the cover sheet with a bundle of recording sheets. The sheet processing unit has a cover sheet feeder for feeding a cover sheet facing upward toward an image forming unit, a reversing unit for reversing the cover sheet so that the cover sheet faces downward, and a conveyor for conveying the reversed cover sheet to the folder in a switchback manner so that the front face of the cover sheet faces the folding roller pair. The folder has a thrusting member for thrusting the bundle of sheets toward the folding roller pair and discharging the folded bundle to a discharge tray.

Image forming apparatus, sheet processing apparatus, sheet processing method, and book-binding method

In an image formation system which includes a finisher with an inserter having a tray for stacking the specific sheet on which an image such as a cover image was formed, and an image formation apparatus, a series of originals composed of plural pages is read from its head page in due order, the image based on the read original is formed on the sheet, the sheet stacked on the inserter is fed, the sheet from the inserter is reversed to set its image-formed face facedown, the sheet from a printer unit is reversed to set its image-formed face facedown. The sheet, the image-formed face of which was reversed facedown, is discharged from the printer unit to the finisher and, on the finisher, the sheet from the inserter is stacked as keeping its image-formed face facedown and the sheet from the printer unit is stacked as keeping its image-formed face facedown. The top and bottom of the image formed by the image forming apparatus corresponds to the top and bottom of the insert sheet.

Image formation apparatus and image formation system

A image formation apparatus to which a postprocess unit requiring a discharge condition that a transfer member of which image formation face is being turned downward is discharged and a binding position at a time of binding the member at its trailing edge is being at the left of the image formation face can be installed. On a platen glass, an original is carried in such a state as its read face is opposite to an upper face of the glass, and an image on the read face of the original is read by a scanner supported at a running read position when the original passes the running read position. Then, through a mirror image process, it is formed on an image formation face (upper face) of a sheet the read image of which direction is the same as that of the set original. When the image-formed sheet is discharged externally by the reverse sheet discharge control, the sheet is discharged in such a state as its face is being turned downward.

An image forming apparatus has a sheet processing unit for feeding a cover sheet and a folder for folding the cover sheet with a bundle of recording sheets. The sheet processing unit has a cover sheet feeder for feeding a cover sheet facing upward in a first direction, a reversing unit for reversing the cover sheet so that the cover sheet faces downward, a conveyer for conveying the cover sheet in a second direction opposite the first direction and then conveying the cover sheet to the folder in the first direction. The folder has a thrusting member for thrusting the bundle of sheets toward the second direction and a folding roller pair for folding the bundle thrust by the thrusting member and discharging the folded bundle in the second direction.

The present invention provides a sheet process device capable of performing a sheaf discharge operation to discharge sheaves of sheets stacked on a process tray to a stack tray, without discharging a next sheet to the process tray during the sheaf discharge operation and stopping an operation on a body side of an image formation apparatus. In the sheet process device, for example, in a case where an original consisting of six sheets of paper is carried, the first to third sheets are stacked on the process tray as they are without any designation, and the following fourth sheet is designated as a sheaf discharge sheet since it is the sheet two before the final sheet of the sheaf, whereby the sheaf discharge of the first to fourth sheets is performed. The fifth sheet after the sheaf discharge is designated as a wind sheet since a value of a wind counter has been set to be &ldquo;2&rdquo;. Then, when the fifth sheet is stacked on the process tray together with the sixth sheet designated as the final sheet of the sheaf, the sheaf discharge is performed.

An original conveying apparatus including an original stacker, a conveying roller for conveying originals on the original stacker one by one, a first rotary member for further conveying the original to a reading position, a second rotary member for conveying the original conveyed by the first rotary member to read the original, a reading device, a sensor disposed in the vicinity of the first rotary member for detecting passage of the original, and a control device for controlling an original conveying amount of the second rotary member by the action of the sensor to convey a leading end of the original to a predetermined position on the reading position, and wherein the control device controls the original conveying amount in consideration of a length of the original based on a timing when a trailing end of the original passes by the sensor when the original has a fixed size and controls the original conveying amount based on a timing when a leading end of the original passes by the sensor when the original has a non-fixed size.

Sheet conveying apparatus and image forming apparatus therewith

A sheet processor has a sheet transportation path, a punching unit for performing a punching operation on the sheets, the punching unit including a punch slide having a punch mechanism thereon, a moving device for moving the punch slide between a sheet punching operation position and a punch slide home position, the movement occurring in a direction transverse to the sheet transportation direction, and a detector for detecting completion of the punching operation by the punching unit. When the detector detects the completion of the punching operation, the moving device moves the punching unit to the punch slide home position.

Sheet processor that adjusts a punching operation position based on a detected sheet edge and associated image forming apparatus

A sheet processing apparatus for processing sheets from an image forming apparatus includes a first processing unit for processing a sheet, the first processing unit including a processing station for processing a sheet, a first path for transporting a sheet therethrough, and a second path for transporting a sheet to the processing station, a second processing unit for processing the sheet transported from the first processing unit, a power supply for supplying power independently to the first processing unit and the second processing unit. The first processing unit selects the first path when the first processing unit is not supplied with power by the power supply.

Sheet processing apparatus having a plurality of processing unit with independent power supply

Sheet processing apparatus including a process tray for stacking sheets received from an image forming apparatus, a jogger for jogging the sheet stacked on the process tray at one of two jogging positions, a discharge unit for discharging the sheet stacked on the process tray, and a discharge tray for stacking the sheets discharged by the discharge unit. The sheet processing apparatus includes a stapler for stapling the sheets stacked on the process tray, and a controller for controlling the stapler to staple the sheets at a stapling position corresponding to the jogging position by the jogger.

Sheet processing for stacking shifted sheet bundles

When sheets with images formed thereon from an image forming apparatus and a special sheet such as a cover sheet are arranged in alignment into a bundle of sheets, conveyance of the special sheet from the stacking unit is started prior to conveyance of the sheets from the image forming apparatus, and the special sheet is temporarily halted on a conveyance path at a location intermediate between the stacking unit and a receiving unit, whereby no complicated operation by an operator is required and the productivity can be improved. Further, the special sheet will be switched (i.e. reversed) when it is conveyed to the receiving unit.

In an image formation system which includes a finisher with an inserter having a tray for stacking a specific sheet on which an image such as a cover image was formed, and an image formation apparatus, a series of originals composed of plural pages is read from its first page in order, the image based on the read original is formed on the sheet, the sheet stacked on the inserter is fed, the sheet from the inserter is reversed to set its image-formed face facedown, and the sheet from a printer unit is reversed to set its image-formed face facedown. The sheet, the image-formed face of which was reversed facedown, is discharged from the printer unit to the finisher and, on the finisher, the sheet from the inserter is stacked as keeping its image-formed face facedown and the sheet from the printer unit is stacked as keeping its image-formed face facedown.

Growing community of inventors

Hachioji, Japan

Chikara Sato