Image forming apparatus

Details Image forming apparatus Image forming apparatus

1992-03-18

1992-11-10

Moses, Richard L.

Photocopying

Contact printing

Light boxes

355201, 355313, G03G 1500

Patent

active

051628473

ABSTRACT:
A copying machine according to this invention is provided with a key counter and an all-clear function associated therewith. The machine is allowed to perform copying operation only when it is loaded with the key counter. When the key counter is removed, all copying conditions entered in the copying machine by a user are restored to the state before the start of the copying operation. Thus, production of undesired copies attributable to the user-set copying conditions used last can be prevented, so that the cost of copying can be reduced.

REFERENCES:
patent: 4080062 (1978-03-01), Torigai et al.
patent: 4090787 (1978-05-01), Hubbard et al.
patent: 4315685 (1982-02-01), Inuzuka et al.
patent: 4344697 (1982-08-01), Matsumoto et al.
patent: 4501485 (1985-02-01), Tsudaka

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