Copyer Co., Ltd.

Canon Kabushiki Kaisha

Canon Finetech Inc.

Ryoma Suzuki

Iwao Kawamura

Naoki Kiyohara

Kensuke Izuma

Kiyokazu Namekata

Kazuhiro Murakami

Kazuhiro Nishimura

Satoru Sasame

Kazutaka Miyamoto

Tatsuo Fujimura

Yuuichi Sugiyama

Naruhiko Itou

Takashi Nakamura

Kazuhiro Nisimura

An image forming apparatus, which performs recording by discharging ink onto a recording medium using a recording head that discharges the ink, includes a carriage that is mounted with the recording head and scans in a main scanning direction, a linear scale that is provided with graduations for detecting a position of the recording head mounted on the carriage and extends along the main scanning direction, a linear sensor that is fixed to the carriage and reads out the graduations on the linear scale by scanning in the main scanning direction on the linear scale together with the carriage, and an air guide that is arranged in a vicinity of the linear sensor in the main scanning direction and guides air moving toward the linear sensor as the carriage scans such that the air is directed away from the linear sensor. In the image recording apparatus, adhesion of ink mist to the linear sensor can be reduced.

Image forming apparatus

Between adjacent pinch rollers , an auxiliary roller is provided coaxially with the pinch rollers . A large diameter portion of the auxiliary roller presses down a recording medium on a platen . Between the auxiliary roller and an image formation zone , there is provided a downstream sheet-pressing member . The large diameter portion of the downstream sheet-pressing member also presses down the recording medium against the platen

Ink jet type image forming device

An image forming apparatus having a print member for forming an image on a recording sheet while reciprocating in a predetermined direction includes a pair of conveyance rollers and a separating member for separating the of conveyance rollers from one another. A control lever for controlling the separating member is provided as is a changeover element for permitting the control lever to rotate when said print member moves in a predetermined direction and is not located at an interference area in which the print member would collide with the conveyance rollers if they were separated, and for prohibiting the control lever from rotating when the print member is located at the interference area.

When a carriage,is positioned in an end portion in the direction indicated by arrow B in a scanning area thereof, an attachment,is in contact with a main frame side wall,of a plotter,and turns in the direction indicated by arrow D against the enabling force in the direction indicated by arrow C of a helical torsion coil spring,so that an image position detector,is stored in a storage unit,of the carriage

Scanning type image formation apparatus

The relative positions of cutter blade,, platen,, pressing member,, and bending guide,are adjusted to obtain the acute angle &THgr; between side face,of cutter blade,facing to the delivery direction and recording medium,in the range from 25&deg; to 65&deg;.

Apparatus for cutting-recording medium

A cam,is rotated in an arrow F direction. This causes sheet conveyance rollers,and guide elements,to rotate on a lower conveyance shaft,and an upper conveyance shaft,, respectively, so that they are separated from a drive roller,. Thus, a spur plate,faces the upward stream end with respect to the recording sheet conveyance direction and opens in synchronism with the sheet conveyance rollers,and,, etc. Accordingly, it is possible to readily remove a recording sheet subjected to the jam.

Image forming device

An extension guide unit,is provided on a side portion of a recording medium conveying passage. An extension guide,is held in a wound state in an extension guide holder,of the extension guide unit,In order to convey a recording medium, the extension guide,is drawn out, by which the recording medium is guided. This enables the recording medium to be smoothly conveyed.

Growing community of inventors

Tokyo, Japan

Ryoma Suzuki