Canon Kabushiki Kaisha

Kazuki Tanaka

Takayuki Ishihara

Tetsuya Takei

Yujiro Ando

Koji Masuda

Hiroaki Tsuchiya

Michio Ito

Matsuomi Nishimura

Hiroki Kisu

Katsunobu Ohara

Hisaaki Senba

Nobuyuki Kume

Nobutoshi Yoshida

Keishi Osawa

Hideki Tada

Shinji Hanada

An image reader sets the level of illumination provided by a light source and the gamma correction provided by a density correction circuit in dependence upon a user selected density setting button on a control panel.

Image reader capable of setting density and illumination

An image fixing apparatus includes a heater; a film movable in contact with the heater at one side thereof and in contact with a recording material at the other side thereof, wherein a visualized image on the recording material is heated and fixed by heat from the heater through the film; the heater including a heat generating layer extending in a direction crossing a movement direction of the film, for producing the heat by the application of a voltage between its longitudinal opposite ends; an electric path branched out of an image fixing part of the heat generating layer; and a selector for selecting the electric path in accordance with a size of the recording material.

Movable film fixing device with heater control responsive to selected

A corona discharging apparatus is adapted to vibrate a corona discharge wire and/or grid wires by the use of a vibrating element to remove foreign matters deposited on the corona discharging wire and/or grid wires.

Corona discharging apparatus

A cleaning device in an image forming apparatus for removing developer, dust and/or corona products adhering to a surface to be cleaned includes a cleaning member bearing against a surface to be cleaned to clean the surface to be cleaned, receiving means for receiving magnetic powder removed from the surface to be cleaned by the cleaning member, and magnets provided at the opposite ends of the cleaning member to prevent the magnetic powder removed from the surface to be cleaned by the cleaning member from scattering outwardly.

Cleaning device

The present invention aims at improvement in the image forming method, wherein ion current is modulated in an image form, on the basis of which a secondary electrostatic latent image is formed on a recording sheet, an insulated drum, and other recording media, and the thus formed electrostatic latent image is developed. In more detail, the entire region of such sheet and drum where such secondary electrostatic latent image is formed is uniformly charged beforehand to a desired potential, whereby the fogging phenomenon to occur at the time of development, and changes in the formed image which take place due to variations in the modulating quantity of the ion current on account of deterioration in an ion current modulating element can be prevented. Setting of the member to form thereon such secondary electrostatic latent image at a desired arbitrary potential can be done by, for example, varying the voltage to be applied to a grid provided in a corona discharger.

Ion modulation imaging involves prior uniform charging of secondary

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Yokohama, Japan

Kazuki Tanaka