Inhibitable image forming apparatus including entered code data

Details Inhibitable image forming apparatus including entered code data Inhibitable image forming apparatus including entered code data

1989-11-09

1991-05-07

Grimley, A. T.

Photocopying

Contact printing

Light boxes

355133, 355204, G03G 2100

Patent

active

050140884

ABSTRACT:
An image forming apparatus includes a memory having stored code data, code data input keys and a preheat changeover key for selectively switching the fixing device to a preheat mode or an operation ready mode, whereby the apparatus is permitted to operate when code data manually entered by the code data input keys are identical with code data previously stored in the memory. The image forming apparatus further includes entered code data release means responsive to operation of the preheat changeover key for switching the fixing device to the preheat mode, release entered code data whereby the apparatus is inhibited from operating. When the preheat key is pressed, the apparatus is switched to the preheat mode and, at the same time, the entered code data is released. Accordingly, the apparatus requires no dedicated button or key for releasing the entered code data, and may put, to practice use, the preheat changeover means which has been conventionally disposed.

REFERENCES:
patent: 4501485 (1985-02-01), Tsudaka
patent: 4531826 (1985-07-01), Stoughton et al.
patent: 4681423 (1987-07-01), Nishijima

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