Photocopying – Contact printing – Light boxes
Patent
1988-02-22
1989-12-05
Moses, R. L.
Photocopying
Contact printing
Light boxes
355328, G03G 15000, G03G 1501, G03G 15085
Patent
active
048856118
ABSTRACT:
An image forming apparatus equipped with a plurality of developing units respectively using different color toners, and capable of forming a two-color image. The image forming apparatus is able to operate selectively in a first image forming mode for forming a single-color image, and in a second image forming mode for forming a two-color image. In the second image forming mode, sections of a latent image respectively corresponding to previously demarcated sections of the contact glass are developed in two different colors by operating the two developing units in an appropriate sequence. Selection of the second image forming mode is inhibited and an alarm signal is provided when only one of the plurality of developing units is mounted in place on the frame of the image forming apparatus.
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Higashio Kimihiko
Nishimori Kadotaro
Minolta Camera Kabushika Kaisha
Moses R. L.
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