Image forming apparatus

Details Image forming apparatus Image forming apparatus

1992-03-13

1992-11-17

Grimley, A. T.

Photocopying

Contact printing

Light boxes

355 69, 355206, 355208, 355229, G03G 1528

Patent

active

051647729

ABSTRACT:
An image forming apparatus using optics including a lamp and capable of operating in an enlarge mode even when the voltage to the lamp exceeds a limited voltage. While the apparatus is operated in an enlarge mode, the limitation of the voltage to the lamp can be cancelled on an operation and display panel. When the sum of the voltage to the lamp and a voltage elevation for a magnification change mode is greater than the a set voltage assigned to the lamp 102, the remaining number of copies undergoing image forming processing and the limited number of copies particular to an enlarge mode are compared. If the remaining number is greater than the limited number, an alarm inhibiting an enlarge mode is produced while an enlarge mode input is invalidated.

REFERENCES:
patent: 4982232 (1991-01-01), Naito
patent: 5016046 (1991-05-01), Nishiyama
patent: 5065184 (1991-11-01), Iimori et al.

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