Canon Kabushiki Kaisha

Eiichi Kondo

Takao Aoki

Shunichi Kubo

Toru Takahashi

Hidejiro Kadowaki

Yoshio Takasu

Shigeyoshi Onoda

Yutaka Komiya

Hajime Katayama

Shunzo Inoue

Naoki Iwami

Tetsuji Tachika

Akihiro Tomosada

In a color image formation apparatus which comprises a photosensitive medium, optical image exposure device for exposing the photosensitive medium to an optical image having light components of an image original, and electrostatic latent image formation device for forming electrostatic latent images on the photosensitive medium in accordance with the exposure to the optical image. The image formation apparatus includes a color separating device having a plurality of color separating filters disposed along the optical path of the optical image exposure device, a developing device having a plurality of developing units for supplying different color developers to develop the electrostatic latent images formed on the photosensitive medium by the electrostatic latent image formation device, a mode setting element for designating the combination of one of the color separating filters and one of the developing units, and a control device for reading the combination of a predetermined color separating filter and a predetermined color developing unit designated by the mode setting device and for causing the designated color separating filter and the designated color developing unit to cooperate with each other.

Color image formation apparatus

Color electrophotographic method and apparatus capable of providing color representation faithful to an original by the provision of well designed color balance control devices. The method of the invention comprises a step of exposing a color resolving image of an original onto a photosensitive medium to develop an electrostatic latent image formed according to the resolving image or an electrostatic image according to the first-mentioned image with fixed color developer, the step being repeated in number according to the color resolution to represent color one above the other on an image carrier such as a photosensitive medium.

Color electrophotographic method and apparatus

Electrophotographic photosensitive member characterized by a photoconductive layer which comprises polymers containing vinylcarbazole unit as a repeating moiety and arsenic and/or antimony chalcogen compound, said chalcogen compound being present in an amount of 1 to 30 volumetric parts per 100 volumetric parts of the polymer.

Photosensitive member having layer of vinyl carbazole polymer containing

In a heat-fixing device for fixing a member to be fixed as it is conveyed on a conveyance path provided with a heat source, there is provided suction means having a suction port adjacent to the conveyance path. The suction means is operable to draw the member to be fixed as it is conveyed.

Heat-fixing device

In transferring a toner image carried on a toner image carrier onto a transfer medium, a uniform charge is imparted to the surface of the toner image carrier while a charge of the same polarity as the uniform charge is imparted to the surface of the transfer medium, whereafter a toner image is transferred from the surface of the toner image carrier to the surface of the transfer medium.

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Kawasaki, Japan

Eiichi Kondo