Photocopying – Contact printing – Light boxes
Patent
1992-06-12
1993-07-06
Pendegrass, Joan H.
Photocopying
Contact printing
Light boxes
355285, 364132, G03F 1500
Patent
active
052258718
ABSTRACT:
A control device incorporated in image forming equipment and having at least a main control unit and a slave control unit. The main and slave control units each has a CPU (Central Processing Unit) and a ROM (Read Only Memory) for storing image formation control programs. To change the image formation control programs, only the ROM of the main control unit is replaced to thereby reduce the service time.
REFERENCES:
patent: 4441164 (1984-04-01), Pavan et al.
patent: 4967377 (1990-10-01), Masuda
patent: 5012899 (1991-05-01), Iwata
Pendegrass Joan H.
Ricoh & Company, Ltd.
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