Photocopying – Contact printing – Light boxes
Patent
1989-02-01
1991-11-19
Braun, Fred L.
Photocopying
Contact printing
Light boxes
346157, 355202, G03G 1501
Patent
active
050669869
ABSTRACT:
A printer apparatus is connected to a host for forming images which includes a photosensitive member, an image former for forming an electrostatic latent image on the surface of the photosensitive member, and a plurality of developing devices respectively containing different colors of developer, each of which is driven independent of one another and selectively driven for developing the electrostatic latent image formed on the surface of the photosensitive member. The apparatus also includes an image transferor for transferring the developed image to a record medium, and a controller for controlling the driving of the developing devices in a plurality of different modes during the development of the electrostatic latent image. Only one of the developing devices is driven to develop a first part of the electrostatic latent image in a first mode, at least two developing devices are driven to develope a second part of the electrostatic latent image in a second mode, and all of the developing devices are maintained deenergized to prevent the development of a third part of the electrostatic latent image in a third mode. The controller develops the electrostatic latent image by selectively driving the developing devices using at least two of the three modes.
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Emori Kiyoshi
Maekawa Hiroshi
Braun Fred L.
Minolta Camera Kabushiki Kaisha
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