Photocopying – Contact printing – Light boxes
Patent
1989-06-20
1990-07-24
Prescott, A. C.
Photocopying
Contact printing
Light boxes
355218, 355244, 346157, G03G 1501
Patent
active
049438336
ABSTRACT:
A copying apparatus carrying out copying by turning latent electrostatic images formed on a photoreceptor drum into toner images and by transferring the same on a sheet of copy paper comprises a latent electrostatic image forming unit for forming latent electrostatic images on the photoreceptor drum, a toner color selector for separately selecting a color for the images of an original and a color for images of additional information such as date or the like, and a transfer apparatus for transferring the toner images again on a sheet of copy paper which has been already copied. The images of an original are copied in a first color, and thereafter the images of the additional information are copied in a second color, so that a copy is provided in which the images of the original and the images of the additional information are formed in different colors.
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patent: 4627707 (1986-12-01), Tatsuo et al.
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patent: 4819028 (1989-04-01), Abe
patent: 4847654 (1989-07-01), Honma et al.
Minolta Camera Kabushiki Kaisha
Prescott A. C.
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