Canon Kabushiki Kaisha

Takao Muramatsu

Susumu Sugiura

Noboru Koumura

Motoharu Fujii

Syusei Tsukada

Nobuhiro Takekawa

Yasuhiro Yano

Ichiro Endo

Hajime Kobayashi

An image formation apparatus includes an electrostatically chargeable member having an optical density that changes with change of its reproducing power. A charging device forms an electrostatic latent image on the chargeable member, and a developing device develops the electrostatic latent image into a visual image. A transfer mechanism then transfers the visual image onto a recording member. A detector detects the optical density before the chargeable member is charged by the charging device and a control device controls at least one of the charging device, the developing device, and the transfer mechanism in accordance with the output of the detector.

Image formation method and apparatus

An image forming method comprises adding a development accelerator for accelerating the developing function at the time of the heat-development to a heat-development type photosensitive raw material containing therein at least an organic silver salt, a halide, and a binder, at the time when the image formation is to be carried out by the process steps of exposure and heat-development.

Image forming method

The disclosure describes an improved electrostatic printing in which cleaning step and developing step are united together as single combined step. It is possible to carry out charging step and transferring step with same single means. The electrostatic printing is adaptable for making a large number of prints at a high speed. The developing agent can be recovered and reused very efficiently.

Electrostatic printing

The electrostatic printing apparatus includes a device for making an electrostatic printing master having thereon an electrical resistance pattern by applying image light of an original on an image forming member and heating the member, a rotatable member for carrying thereon the printing master, a charge image forming device which applies electric charges to the master, a developer for developing the charge image, transfer device for transferring the developed image onto a transfer material, a cleaner for cleaning the master after the transfer, and a device for removing and discharging the master.

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Yokohama, Japan

Takao Muramatsu