Image forming apparatus and image forming method employed theref

Details Image forming apparatus and image forming method employed theref Image forming apparatus and image forming method employed theref

1988-06-07

1989-07-11

Moses, R. L.

Photocopying

Contact printing

Light boxes

355 77, 355311, 430 31, G03G 1501

Patent

active

048476587

ABSTRACT:
An image forming apparatus for use in an electrophotographic copying process and an image forming method for the apparatus, which are arranged to reproduce an image portion of an original document by a black developing material on a white paper sheet when an area of the image portion of the original document is below a predetermined level, and also, reproducing a background portion of the image by a white developing material on a black paper sheet when the area of the image portion of the original document is above the predetermined level, and thus, the black developing material or white developing material is selectively used according to percentages of image areas on the original document.

REFERENCES:
patent: 4239374 (1980-12-01), Tatsumi et al.
patent: 4579443 (1986-04-01), Abuyama et al.
patent: 4582417 (1986-04-01), Yagasaki et al.
patent: 4659211 (1987-04-01), Oka
patent: 4733276 (1988-03-01), Katitani
patent: 4752802 (1988-06-01), Ito et al.

Affiliated with

Also associated with

Rating

Image forming apparatus and image forming method employed theref does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Image forming apparatus and image forming method employed theref, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image forming apparatus and image forming method employed theref will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-440165