Canon Kabushiki Kaisha

Other

Haruhisa Oshida

Yuichi Yamamoto

Ayumu Murakami

Toshiyuki Karakama

Shinya Noda

Yoshikazu Sasago

Kiyoshi Oyama

Toshifumi Itabashi

Yusuke Imai

Takuma Koizumi

Isao Ikemoto

Takayuki Suga

Takeshi Aoyama

Shoko Magata

Yasushi Shimizu

Masahide Kinoshita

Hiroyuki Kimura

Keiji Okano

Akira Domon

Shigeo Miyabe

Kanji Yokomori

Takashi Akutsu

Takashi Kusanagi

Kazuki Yokokawa

An image reading apparatus comprising: a placing portion on which an original being fed is placed; an original conveying portion which conveys the original placed on the placing portion; an image reading portion which reads an image on the original conveyed by the original conveying portion; an stacking portion which is disposed under the placing portion and on which the original read by the image reading portion is stacked; and an illuminating portion which is disposed above the stacking portion and below the placing portion to illuminate the stacking portion, wherein the illuminating portion is disposed outside an original stacking area, that a maximum-sized original in a width direction orthogonal to an original conveyance direction is stacked, in the width direction.

Image reading apparatus

A sheet conveyance device has a sheet conveyance path formed by a guide member having a curved surface which is curved in a sheet conveyance direction, and a flexible sheet scanner is provided along the curved surface of the guide member, the flexible sheet scanner has an optical sensor layer in which photoelectric conversion devices formed by combinations of organic transistors and organic photodiodes are continuously arranged in a matrix shape.

Sheet conveyance device and image forming apparatus

An image reading apparatus is provided that can prevent image streaks due to dirt, stain or the like from being produced in an image of an original that is read while being conveyed. The image reading apparatus (A) includes an ADF () having a scanner unit () incorporated therein and comprised of a cylinder () having an outer peripheral surface thereof on which a plurality of read pixels () are arranged in a matrix. In reading an original (D), the scanner unit is rotatably driven in an original conveying direction at a circumferential speed approximately equal to an original conveying speed, and reads image information on the original passing through an image reading position (P).

An image scanning device including: a conveyance path which conveys originals; a first scanning means and a second scanning means which are placed such that they sandwich the conveyance path; and a white reference member used for adjusting the white levels of the scanning means; wherein at least one of the first scanning means, the second scanning means and the white reference member is movable; the first scanning means and the second scanning means can scan the same surface of said white reference member since the first scanning means or the second scanning means is moved or the white reference member is moved.

Image scanning device and image forming device

A sheet conveyance device according to an aspect of the invention includes a conveyance roller pair which is rotated to convey a sheet by receiving a driving force from a motor conveying a sheet; a conveyance guide which guides the sheet conveyed by the conveyance roller pair; and sheet detection unit for detecting the sheet guided by the conveyance guide. In the sheet conveyance device, a sheet conveyance speed of the conveyance roller pair is controlled based on information from the sheet detection unit. The sheet detection unit is a sheet scanner having an optical sensor layer in which photoelectric conversion devices formed by combinations of organic transistors and organic photodiodes are continuously arranged in a matrix shape, and the sheet scanner is provided in an area of the conveyance guide in order to continuously detect the sheet conveyed by the conveyance roller pair in a predetermined area.

A sheet conveyance device according to an aspect of the invention includes a guide member and a flexible guide assist member. The guide member constitutes a conveyance path for guiding a conveyed sheet. The guide assist member is provided in the guide member, the guide assist member is brought into contact with the conveyed sheet to apply a force to the sheet, and whereby the guide assist member assists the guidance of the sheet conveyance. The sheet conveyance device is characterized in that a sheet scanner is provided in the guide assist member. In the sheet scanner, photoelectric conversion devices formed by organic semiconductor devices are arranged.

Sheet conveyance device, image forming apparatus and image reading apparatus

An image reading apparatus and an image expansion and contraction correcting method are provided that improve the quality of each read image by restraining image expansion and contraction caused by a variation in the combination of conveying units for conveying each document. The image reading apparatus has conveying units (a first conveying unit, a second conveying unit, and a third conveying unit) that convey each document, and an image reading unit (a first image reading unit and a second image reading unit) that reads an image of each document being conveyed by the conveying units. The image reading speed of the image reading unit is adjusted in accordance with a change in the combination of conveying units that are conveying a document, so as to correct image expansion and contraction caused by a change in document conveying speed caused by the change in the combination of conveying units.

Image reading apparatus, and image expansion and contraction correcting method

An image reading device which is capable of enhancing productivity in reading bound originals, such as a book, a magazine, or a document. A sheet-scanner device implementing the image reading device includes a sheet scanner as a reader part for reading an image on an original. The sheet scanner comprises a sheet-like substrate formed thereon with a light-emitting layer that can emit light spontaneously, and a light-receiving layer on which a plurality of reading pixels are arranged. The sheet scanner is mounted in the sheet-scanner device such that the sheet scanner can be drawn out onto and in from the original.

Image reading device and image forming apparatus

Provided is an image reader including: a first reading device for reading an image on one side of a document moving on a transparent glass plate; a second reading device as a movable reading device, for reading one of an image on another side of the document moving on the transparent glass plate and an image on another side of the document remaining stationary on the transparent glass plate; and a show-through preventing member for preventing show-through of the document at a first position opposed to the first reading device, characterized in that the show-through preventing member is provided movably from the first position opposed to the first reading device to a second position in which reading of an image by the second reading device is prevented from being hindered.

Image reader and image forming apparatus

Image forming apparatus

An image forming apparatus includes an image forming part for forming an image on a sheet, a sheet discharging part for discharging a sheet having an image formed thereon by the image forming part, a sheet stacking tray for stacking thereon sheets discharged from the sheet discharging part, a first stack height detecting sensor for detecting whether a height of stack of sheets stacked on the sheet stacking tray has reached a first height, a second stack height detecting sensor In for detecting whether the height of stack of sheets stacked on the sheet stacking tray has reached a second height which is higher than the first height, and a control part for controlling the image forming apparatus by judging a state of stack of sheets on the sheet stacking tray on the basis of results of detection provided by the first stack height detecting sensor and the second stack height detecting sensor, wherein the control part judges the sheet stacking tray to be in a maximum stacked state when the second stack height detecting sensor has detected that the height of stack of sheets stacked on the sheet stacking tray has reached the second height and, after that, continues judging the sheet stacking tray to be in the maximum stacked state until the first stack height detecting sensor detects that the height of stack of sheets stacked on the sheet stacking tray has become less than the first height.

Image forming apparatus and sheet stacking system

A toner accommodating container usable with a process cartridge detachably mountable to a main assembly of an image forming apparatus, wherein the process cartridge contains an electrophotographic photosensitive member and a processing device actable on the electrophotographic photosensitive member, the container includes a toner accommodating portion for accommodating toner to be used for developing a latent image formed on the electrophotographic photosensitive member; a cover member provided to cover an opening of the toner accommodating portion; a grip portion provided on the cover member; a partition wall extending in the toner accommodating portion along a short side thereof with a gap between the partition wall and the cover member, and wherein the partition wall and the cover member are contactable to each other when the toner accommodating container is handled with the grip portion, and the cover member is deformed.

Toner accommodating container with a gripping cover feature usable with

A process cartridge detachably mountable to a main assembly of an image forming apparatus includes a drum frame for supporting an electrophotographic photosensitive drum; a developing frame mounted to a developing roller for developing a latent image formed on the electrophotographic photosensitive drum; a toner frame having a toner accommodating portion for accommodating a toner to be used by the developing roller, wherein the toner frame is provided with a coupling member for swingably coupling with the drum frame, and is provided with a grip for gripping the process cartridge.

Process cartridge including a toner frame swingably coupled with a drum

A toner accommodating container usable with a process cartridge detachably mountable to a main assembly of an image forming apparatus, wherein the process cartridge includes an electrophotographic photosensitive member and a process means actable on the electrophotographic photosensitive member includes a toner accommodating portion for accommodating toner usable for developing a latent image formed on the electrophotographic photosensitive member; a partition wall extending in the toner accommodating portion in a direction along a short side of the toner accommodating portion to define a plurality of space therein; a toner filling opening, at a longitudinal end of the toner accommodating portion, for permitting toner to be filled into the toner accommodating portion; and a through-passage extending from one longitudinal end to the other longitudinal end along a length of the toner accommodating portion so as to permit the toner to be supplied into the spaces.

Growing community of inventors

Abiko, Japan

Haruhisa Oshida