Canon Kabushiki Kaisha

Masahiko Yokota

Hiromasa Katayama

Haruo Ishizuka

Shinsuke Ubayashi

Kazuhisa Okuda

Michiaki Endo

Takatoshi Chiba

Hiromitsu Uchida

Akihiro Shimizu

Wataru Kawata

Shoji Takeda

Hideaki Kosasa

Ryuichi Kojima

Toshiro Tomono

Hiroyuki Kimura

Masaaki Saito

Hiroshi Nakahata

Tetsuya Nagase

Toshihiko Kudo

Yukihiro Fujiwara

Tsuyoshi Yoshida

Masahiro Takahashi

Takashi Awai

Akihiro Tomoda

Toshiyuki Takano

Hirohisa Sawada

Hiroaki Miyake

Nobuo Matsuoka

Yasuhiro Matsumoto

Toshiyuki Nagano

Kazuhiko Hasegawa

Norio Kajiwara

Junichi Suzuki

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

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

When removing a sheet that is undesirably attached to a pressure belt as a result of a jam, if the sheet is pulled in the width direction of the pressure belt, the pressure belt may undesirably move in the width direction. This will make it difficult to perform a subsequent jam recovery operation properly. In order to solve this problem, a belt gripping roller can be brought into pressure contact with the pressure belt in the event of a jam, so as to prevent the pressure belt from being moved accidentally in the width direction while the jam is being cleared.

Image heating device

An image heating apparatus including an endless belt for heating an image on a recording material; a supporting member for supporting the belt; a coil for induction heat generation in the belt; control means for controlling a position of the belt in a widthwise direction by inclining the supporting member so as to maintain the position of the belt in the widthwise direction within a predetermined target range; and suppressing means for suppressing a variation of a distance between the belt and the coil with a variation of inclination of the supporting member.

Image heating apparatus

Provided is an image forming apparatus capable of mounting an internal unit in a main body chassis thereof, in which a position of a sheet conveying portion for conveying a sheet to the internal unit, with respect to the internal unit is adjusted by a first adjustment portion, and a position of a sheet discharge portion which discharges the sheet having an image formed thereon, with respect to the internal unit is adjusted by a second adjustment portion.

Image forming apparatus with adjusting portions to adjust positions of conveying and discharge portions

An image heating apparatus includes an endless belt for heating an image on a recording material at a nip; a pressing pad for pressing the belt at the nip; a supporting member for supporting the belt at an inner surface thereof, the supporting member being displaceable to move the belt in a widthwise direction of the belt; a lubricant application member for applying lubricant onto the inner surface of the belt; and displacing means for displacing the lubricant application member in accordance with a displacement of the supporting member.

Image heating apparatus and image forming apparatus with displacing members for displacing other members of the apparatuses

An apparatus for inclining a roller on which a pressure belt is suspended to perform a deviation control of the pressure belt, which can well perform the deviation control of the pressure belt even when the pressure belt has been spaced apart from a fixing roller. A fixing device is provided with a pressure belt suspended on rollers, a deviation control device adjusting the deviation of the pressure belt, and a pressure unit bringing the pressure belt into pressure contact with a fixing roller to form a nip portion. The deviation control device is designed to be moved with the pressure unit.

Image heating apparatus including a retractable pressure belt with deviation control

In a fixing apparatus capable of reducing unevenness in temperature distribution in an axial direction while reducing heat loss at an end portion, a fixing beltextended around a fixation rollerand a fixation tension rolleris heated by a coil unitfor effecting induction heating. The fixation tension rolleris assembled by inserting a heat pipeinto a hollow roller. At both end portions, the hollow rolleris covered with a cover portion having small holes.

Image heating apparatus with heat pipe for decreasing unevenness in temperature distribution

The present invention relates to an image forming apparatus comprising: an exposing means and a developing means. The developing means comprises a plurality of developing devices, a rotating member rotatable while supporting the plurality of the developing devices, and a driving means for the rotation drive of the rotating member for selectively moving the plurality of the developing devices to the developing position such that the driving means transmits driving force to the rotating member via a gear at a drive transmitting position. An angle &#x3b8;e(&#xb0;) formed by a straight line linking the rotation center of the rotating member and the drive transmitting position and the tangent of the image bearing member at an exposing position in the image bearing member moving direction satisfies the following relationship with the premise that an pressure angle of the gear is &#x3b1;(&#xb0;) and the image bearing member rotating direction is positive:&#x2212;&#x3b1;&#x2266;&#x3b8;e&#x2266;&#x3b1;.

Image forming apparatus configured so that an angel is formed by straight line connecting a rotation center of a rotary and a drive transmitting position, and a tangent line at a transfer position of an image bearing member

An image reading apparatus includes an original resting glass sheet for resting allowing an original thereon, a support device for supporting an end portion of the original resting glass sheet, and a movable image reading unit for reading image information of the original, wherein the support device is provided with a cutout for preventing the support device from coming into contact with the image reading unit when the image reading unit moves outwardly beyond the end portion of the original resting glass sheet.

Image reading apparatus and image forming apparatus

The present invention relates to an image forming apparatus comprising: an exposing means and a developing means. The developing means comprises a plurality of developing devices, a rotating member rotatable while supporting the plurality of the developing devices, and a driving means for the rotation drive of the rotating member for selectively moving the plurality of the developing devices to the developing position such that the driving means transmits driving force to the rotating member via a gear at a drive transmitting position. An angle &#x3b8;e(&#xb0;) formed by a straight line linking the rotation center of the rotating member and the drive transmitting position and the tangent of the image bearing member at an exposing position in the image bearing member moving direction satisfies the following relationship with the premise that an pressure angle of the gear is &#x3b1;(&#xb0;) and the image bearing member rotating direction is positive: &#x2212;&#x3b1;&#x2266;&#x3b8;e&#x2266;&#x3b1;.

Image forming apparatus

In an image reading apparatus having a first original reading device for reading one side of an original guided and fed by a guide, and a second original reading device disposed downstream of the first original reading device for reading the other side of the original, the guide is bent between the first original reading device and the second original reading device so as to shield the respective reading devices. The bending of the guide is done by bending an original feeding path so that direct rays and diffraction rays from each of two light sources may not enter respective photoelectric transfer elements associated with other light source, to thereby shield the photoelectric transfer elements from light of a light source not associated therewith.

Image reading apparatus

In a contact type image sensor including an illumination section including a light source and light guide to illuminate a document, an image sensing element for converting an optical image of the document into an electrical signal, a cylindrical rod lens for forming an optical image on the image sensing element, and a frame for integrally holding the illumination section, image sensing element, and cylindrical rod lens, the light guide has undergone antireflection treatment on a surface thereof on the document side.

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Abiko, Japan

Masahiko Yokota