Image forming apparatus of laser scanning type

Details Image forming apparatus of laser scanning type Image forming apparatus of laser scanning type

1992-02-18

1994-08-23

Reinhart, Mark J.

Recorders

Printing, dotting, or punching marker

Ink transfer support or moving means

B41J 2435

Patent

active

053411560

ABSTRACT:
A laser beam scanning type image forming apparatus having a shield member arranged at the terminal side of a main scan of photosensitive member for blocking a laser beam irradiated to the area outside of image forming area. Laser beam output is forcibly caused at a timing of the arrival at the shield member and continued until being detected by SOS sensor, the forcibly caused laser beam being blocked by the shield member. With such an arrangement, it becomes possible to detect laser beam at the time the light amount thereof is stable and to improve precision of time for detecting laser beam.

REFERENCES:
patent: 4264120 (1981-04-01), Uchiyama et al.
patent: 4423426 (1983-12-01), Kitamura
patent: 4557586 (1985-12-01), Hayashi et al.
patent: 5164745 (1992-11-01), Matsuoka

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