Belt position detecting device using timing measurement

Details Belt position detecting device using timing measurement Belt position detecting device using timing measurement

1991-06-11

1993-06-01

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

250557, G01N 2186

Patent

active

052162567

ABSTRACT:
A detecting device for detecting the position of a rotatable image bearing member which is provided in an image forming apparatus. The detecting device has a reference member provided in the image bearing member and a sensor for detecting the reference member. The position of the rotating image bearing member is detected by this detecting device. Further, by this detecting device, the image forming apparatus is able to detect that the image bearing member is slipped in a direction perpendicularly to the image bearing member rotation direction.

REFERENCES:
patent: 3713571 (1973-01-01), Simonton
patent: 3917396 (1975-11-01), Donohue et al.
patent: 4518856 (1985-05-01), Blackington
patent: 4683380 (1987-07-01), Shipkowski et al.
patent: 4922305 (1990-05-01), Agarwal

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