Canon Kabushiki Kaisha

Olivetti-canon Industriale

Hiroyoshi Maruyama

Yoshikuni Toyama

Kazuo Kagiura

Masahiko Yashiro

Tatsuya Shiratori

Masashi Ohashi

Masanari Shirai

Eiichi Ando

Shinichi Tanada

Yuji Takahashi

Toshihiko Kusumoto

Naomasa Kimura

Takashi Suzuki

Shigeo Yamagata

Mitsuru Kurita

Koji Arai

Tsutomu Utagawa

Kazuo Shishido

Koichi Ishimoto

Ken Tanabe

Masashi Minami

Hiroyuki Miyake

Seiji Sagara

Yasumi Yoshida

Nobuhiro Kasama

Noriaki Koyanagi

Hidetoshi Tanaka

Tamotsu Okada

Yuji Hasegawa

Mototada Toriumi

Takaji Yonemori

Felice Giacometto

Noriyuki Yokoo

Yoichi Ishii

Luigi Dantonia

In an image reading apparatus for reading an original image using a light source containing a plurality of color components, a control pulse for dimming the light source is generated by pulse-width modulation symmetrically with respect to a reference timing (for example, the central position in one storage time or the storage start timing) in one predetermined storage time of a line sensor.

Image reading apparatus, and dimming control method and line sensor layout method therefor

A both-face automatic original feeding apparatus wherein a plurality of originals having images on their first and second surfaces are successively supplied from an original stacking portion to a predetermined position for reading an original, and each original is reversely rotated through a switch-back path after the first surface of the original passes through the predetermined position, thereby supplying the original to the predetermined position again to direct the second surface of the original to the predetermined position. In such a feeding apparatus, there is provided an introduction path for directing the original supplied from the original stacking portion to the predetermined position; a first discharge path for directing the original to the switch-back path after the original passes through the predetermined position; a surface reverse path for directing the original from the switch-back path to the predetermined position after reversing a first surface and a rear surface of the original; and a controller for controlling the apparatus in such a manner that a preceding original is switched back to convey it in the surface reverse path while a succeeding original is being passed through the predetermined position, and, when a trailing end of the succeeding original leaves the predetermined position, a tip end of the preceding original reaches the predetermined position.

Both-face automatic original feeding apparatus

The present invention relates to a sheet conveying apparatus with a pair convey rollers arranged upstream of a registration mechanism for correcting a skew-feed of a sheet in a sheet conveying direction that can be abutted against or separated from each other, or can be shifted in accordance with a length of the sheet in the sheet conveying direction. As the result, when the skew-feed of the sheet is corrected by the registration mechanism, a trailing end of the sheet is not restrained.

Sheet conveying apparatus

The present invention provides a sheet post-treatment apparatus for receiving a sheet material on which an image was formed by an image forming apparatus and for post-treating such sheet material and for sending the sheet material to a next post-treatment apparatus. A sheet receiving opening has the same height as a sheet sending opening.

Sheet post-treatment apparatus of line-up free type

A document reading device for applying light to a document placed on platen glass so as to read an image formed on the document. The device is provided with a light-screen. The width of the light-screen can be changed according to the document size in such a way that it is also possible to change the amount of light which can pass through the light-screen from a light source to be applied to the platen glass. With this arrangement, a local temperature increase in the platen glass can be inhibited during sequential document-reading.

Document reading device with light-shielding member that prevents a

The present invention provides an automatic original feed apparatus comprising an original stacking portion on which a plurality of originals can be rested, an introduction path for directing the original supplied from the original stacking portion to a reading portion, an annular reverse rotation path for reversely rotating the original discharged from the reading position and for directing the original to the reading position again, a discharge path for discharging the original discharged from the reading position onto a discharge portion, and original feed rotary members arranged in the introduction path, reverse rotation path and discharge path, respectively, and rotated in one direction.

Automatic original feed apparatus

The present invention provides a sheet post-treatment apparatus in which a tab sheet is used to sort sheet materials, comprising a tab trimmer for successively cutting each of plural tab forming sheet materials being supplied, to form tabs in the sheet materials at offset tab positions. The tab trimmer is in modular form which can be removed from the apparatus and replaced with another modular tab trimmer.

Sheet post-treatment apparatus having tab trimmer

A multicolor image forming apparatus for forming a multicolor image on a transfer material includes a mechanism, in which when forming a plurality of color toner images on a single electrostatic-latent-image bearing member performing endless movement, deviation is not produced between the respective color toner images. The distance between first and second latent-image forming portions on the electrostatic-latent-image bearing member is arranged to equal an integer multiple of the moving distance of the electrostatic-latent-image bearing member caused by a single revolution of a driving roller for driving the member.

Multicolor image forming apparatus for forming a multicolor image on a

A paper tray for a photocopier comprises a container (1) which can travel between open (E) and closed (L) positions. It moves along guides (22, 24). A drive mechanism (32) move the container from the closed to the open position by exerting a constant force on the container. The container is mounted on a carriage (20). This is supported by a pair of transport rollers (28) which roll along the guides. The rollers (28) are firmly connected together for rotation by a shaft (30). A locking mechanism is provided for the container. A lever (54) is rotatable on the photocopier to lock the container in the closed position. The lever is coupled to a slide (60) having a cam groove (65) therein. This is arranged to move a locking element (55) which engages the lever (54) so as to release the lever (54) as the container is pushed further into the photocopier in the closed position.

Paper holding apparatus

An image fixing apparatus includes a rotatable member for being heated by a heating source to fix an image on an image supporting member, first and second detecting elements responsive to temperature of the rotatable member, and wherein the first and second detecting elements are disposed on substantially the same circumferential line of the rotatable member.

Image fixing apparatus

A driving mechanism for driving an electrophotographic photosensitive body operates through a torque limiter. The torque limiter is arranged on a support shaft for supporting the photosensitive body. A driving gear for driving a developing member is arranged coaxially with the torque limiter independently of the latter. This arrangement reduces the load applied to the torque limiter. In addition, the mechanism remains compact.

Apparatus for driving image bearing member via torque limiter

An original scanning apparatus comrpises a scanning unit for scanning an original. The scanning unit has a mirror and a light source for illuminating the original. A connecting member is electrically connected to the scanning unit. A guide member supports and guides one end of the scanning unit. The guide member fixes a position of the one end of the scanning unit in a vertical direction. At least a part of a driving element is disposed at the position overlapping with the guide member in the vertical direction, but not overlapping with the mirror of the scanning unit. The connecting member is provided at the side of the guide member.

Original scanning apparatus with electrical connecting member

An electrophotographic apparatus wherein a blank is formed at an end of a transfer material to make it easier to separate the transfer material from a photosensitive member and to prevent the transfer material from wrapping around an image fixing roller. A light reflecting portion is formed at a position corresponding to a leading edge of an original on an original supporting platen. The light reflecting portion receives light from an original illuminating lamp and reflects it to the region of the photosensitive member that has been opposed to a charger when the charge is switched from its non-operative state to an operative state.

Electrophotographic apparatus with leading edge blanking

The present invention relates to an image forming apparatus in which a sheet cassette for containing sheets is removably mounted to a body of the apparatus. The image forming apparatus comprises a frame structure having a pair of legs spaced apart from each other, a bottom plate arranged on the legs, a first side plate arranged at one ends of the legs and uprightly mounted on the bottom plate, a second side plate arranged in confronting relation to the first side plate at the other ends of the legs and having a lower end portion extending below the legs and covering the other ends of the legs, and stay members for interconnecting the first and second side plates at their upper portions.

Growing community of inventors

Yokohama, Japan

Hiroyoshi Maruyama