Canon Kabushiki Kaisha

Wataru Kawata

Kenichi Hayashi

Hideki Kushida

Hiromasa Katayama

Taro Ikeda

Tomokazu Nakamura

Hiroaki Takagishi

Hitoshi Kato

Youichi Chikugo

Keiko Fujita

Akihiro Shimizu

Masahiko Yokota

Shoji Takeda

Hideaki Kosasa

Ryuichi Kojima

Toshiro Tomono

Yuji Yamanaka

Noriyoshi Ueda

Yoshifumi Takehara

Toshimasa Suzuki

Kazuyuki Iwamoto

Naho Saitoh

Masakazu Hiroi

Tomohito Nakagawa

Takashi Sugiura

Katsuhito Kato

Akimaro Yoshida

Seiichiro Adachi

Atsuteru Oikawa

Hiroto Koga

Nobutaka Uto

Kazuhiro Matsuo

Akihiro Sato

Yoshimitsu Nakane

Toshihiko Kudo

Kenichi Tamura

Mitsugu Kamizuru

An engraving processing apparatus includes a laser engraving unit configured to perform engraving processing for forming a recessed portion on a sheet by irradiating a laser beam onto the sheet, and a controller configured to control an engraving processing operation of the laser engraving unit.

Engraving processing apparatus and image forming apparatus

When a sheet bundle is being conveyed by any one pair of plural pairs of rollers independently movable toward and away from the bundle sheet, before the bound portion of the sheet bundle passes the pair of rollers, the pair of rollers on the downstream side nearest to the bound portion are separated from the sheet bundle, and the pairs of rollers more downstream than that pair convey the sheet bundle. Thereby, it happens less often that the pairs of rollers gather the air collected between adjacent ones of the sheets of the sheet bundle to the bound portion to thereby cause a slack to the sheets, and the occurrence of wrinkles or twists in the sheet bundle can be reduced. Also, the pair of rollers are separated from the sheet bundle before the bound portion passes the pair of rollers, whereby it happens less often that the pair of rollers are damaged by the bound portion, and the sheet bundle can be conveyed smoothly.

Sheet processing apparatus and image forming apparatus provided with the same

A sheet processing apparatus configured to bind a sheet bundle includes a folding portion configured to fold the sheet bundle, a sheet processing portion provided upstream of the folding portion and configured to form a groove at a fold position of at least one sheet of the sheet bundle, and a controller configured to control an operation of the sheet processing portion. The controller controls an operation of the sheet processing portion such that a width of a groove formed on a sheet located on an outer side of the folded sheet bundle is larger than that of a groove formed on a sheet located on an inner side of the folded sheet bundle.

Sheet processing apparatus and image forming apparatus

A sheet processing apparatus includes an aligning member configured to align an end of a bundle of sheets including a folded sheet by engaging with the edge of the bundle of sheets, and a sheet processing unit configured to process the bundle of sheets having the end aligned by the aligning member. The end of the bundle of sheets engaged with the aligning member is opposite to a folded portion of the folded sheet.

A sheet processing apparatus includes a winding unit configured to wind a continuous sheet, a binding unit configured to bind the continuous sheet that is wound and stacked by the winding unit, and a first cutting unit configured to cut the continuous sheet that is bound by the binding unit in a state that the continuous sheet is wound by the winding unit.

Sheet processing apparatus and image forming system

After an image was formed, a position in the width direction of the sheet stacked on a stacking portion is aligned by fixing one of aligning plates which can independently be driven and moving the other aligning plate in one direction. When the image is formed onto the sheet, a side edge of the sheet on the side which is come into contact with the aligning plate on the side fixed as a reference wall upon aligning is used as a reference and the image is formed.

Image forming apparatus

A sheet processing apparatus is operable to cut an edge portion of a sheet. The sheet processing apparatus is operable to calculate a sheet utilization efficiency based on an area of the sheet before cutting and an area of a sheet obtained by cutting the edge portion.

Sheet processing apparatus and method

Image forming system including at least one image forming apparatus for forming images on sheets on the basis of image data. At least one temporary containing apparatus is disposed downstream of the image forming apparatus for temporarily containing therein the sheets on which the images have been formed. A separating and conveying apparatus separates and conveys the sheets contained in the temporary containing apparatus one by one. A sheet post-processing apparatus conveys the sheets conveyed by the separating and conveying apparatus and the sheets on which the images have been formed by the image forming apparatus and which bypass the temporary containing apparatus in an arbitrary order, in order to effect a set post-process on the conveyed sheets.

Image forming system, image forming method and image forming apparatus

A sheet processing apparatus for covering a sheet bundle with a cover sheet includes a creasing unit for making a crease along an end portion of the cover sheet adjacent the edge of the sheet bundle opposite the spine edge of the sheet bundle. The sheet processing apparatus further includes a folding-back unit for folding-back the end portion of the cover sheet along the crease made by the creasing unit.

A sheet bundle stored in a sheet storage portion is pushed from a predetermined folded position with a first pushing plate, and the sheet bundle is normally conveyed along with the first pushing plate and plunged into a nip between first folding rollers to make a fold. The first folding rollers are reversely rotated while the first pushing plate is retreated, and the sheet bundle with the fold is reversely conveyed and returned to the sheet storage portion. Then, a second pushing plate pushes the sheet bundle, conveyed through a U-shape conveyance path, from a backside of the fold to reversely fold the sheet bundle, and the sheet bundle is completely folded. Therefore, the sheet bundle having good appearance can be realized in good bundle folding processing.

Sheet processing apparatus and image forming apparatus provided therewith and sheet processing method

The sheet processing apparatus is equipped with a process tray on which sheets conveyed are stacked, a return belt which moves the sheets stacked on the process tray, a trailing edge stopper which receives an end portion of the sheets moved by the return belt, and a conveyance assist roller which comes into contact with the sheets on the upstream side of the return belt with respect to the sheet moving direction and imparts a load to the movement of the sheets. The return belt moves the sheets to which a load has been imparted by the conveyance assist roller and causes them to be abutted on the trailing edge stopper.

Sheet processing apparatus and image forming apparatus equipped with the same

A feeding tray for feeding sheets from the left side thereof and a feeding tray for feeding sheets from the right side thereof are disposed on a multiple inserter, and selectively employing the feeding tray for feeding sheets from the left side thereof and the feeding tray for feeding sheets from the right side thereof allows reversal actions of sheets to be eliminated.

Sheet feeding device with plural sheet feeding means feeding in opposite directions to sheet post-processing system

Growing community of inventors

Kashiwa, Japan

Wataru Kawata