Image forming apparatus having detachable IC card

Details Image forming apparatus having detachable IC card Image forming apparatus having detachable IC card

1990-06-26

1994-06-28

Grimley, A. T.

Photocopying

Contact printing

Light boxes

355209, 355308, G03G 2100

Patent

active

053251520

ABSTRACT:
An image forming apparatus includes a main body having an image forming portion and a first indicating device for indicating an accumulated number of copies the image forming portion, and an IC card detachable from the main body. The IC card includes a second indicating device for indicating the accumulated number of copies when the IC card is attached. The IC card further includes an arithmetic operation key for inputting a numerical calculation expression. A numerical calculation will be carried out in accordance with the arithmetic operation key. Finally, the IC card will have first and second states and the image forming apparatus will be switched between operable and inoperable conditions depending on the first and second states

REFERENCES:
patent: 4579443 (1986-04-01), Abuyama et al.
patent: 4699501 (1987-10-01), Watanabe et al.
patent: 4821107 (1989-04-01), Naito et al.
patent: 4882604 (1989-11-01), Kato et al.
patent: 4933725 (1990-06-01), Ito
patent: 4990954 (1991-02-01), Higashio et al.
patent: 4992827 (1991-02-01), Kobayashi et al.

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