Reset mechanism of counter for counting number of times of image

Details Reset mechanism of counter for counting number of times of image Reset mechanism of counter for counting number of times of image

1993-12-10

1995-07-04

Heyman, John S.

Electrical pulse counters, pulse dividers, or shift registers: c

Applications

Counting based on number of times machine or apparatus operates

377 88, G06M 108

Patent

active

054307805

ABSTRACT:
A reset mechanism of a counter for counting the number of times of image formation is mounted on an image forming apparatus. The image forming apparatus includes a unit constituting at least a part of an image forming section which is detachably mounted on a predetermined portion of the main body of the image forming apparatus, a driving mechanism for driving the unit, and a counter for counting the number of times of image formation for reporting the time for replacement of the unit. The reset mechanism has a reset switch provided for on the main body for resetting the counter, and an operating member which is provided for on the unit for operating the reset switch. If a unit which has not been used is mounted on the main body, the operating member which is previously set in the operating position resets the reset switch. If the unit is initially driven by the driving mechanism, the operating member is moved to the operating position by the driving mechanism, so that the connection between the operating member and the driving mechanism is released. The operating member which is moved to the non-operating position can be held in the non-operating position, so that the unit never operates the reset switch.

REFERENCES:
patent: 4516498 (1985-05-01), Mistyurik
patent: 4890306 (1989-12-01), Noda
patent: 4974238 (1990-11-01), Kobayashi et al.
English Language Abstract of 4-29159.

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