Laser beam printer with fixed start of scanning and method of op

Details Laser beam printer with fixed start of scanning and method of op Laser beam printer with fixed start of scanning and method of op

1990-09-28

1992-10-06

Fuller, Benjamin R.

Recorders

Performance of multiple functions of steam and gas engines

Pressure responsive element

346108, 346160, G01D 940, G01D 942, G01D 1514

Patent

active

051536048

ABSTRACT:
A laser beam printer is provided with a sensor for controlling the timing of inscribing image data on a photosensitive member by means of a laser beam scanning the surface of the photosensitive member. The output signal of this sensor rises when the laser beam reaches a prescribed position and falls when the laser beam passes the prescribed position. The time between the rising time and the falling time is used as the standard. Inscription of image data in each scanning line is started after elapse of a prescribed time following the standard time. The standard time remains unchanged in spite of a possible change in the sensor output. On the photosensitive member, the position for starting inscription of each scanning line can be set at the fixed position with high accuracy.

REFERENCES:
patent: 4212018 (1980-07-01), Ohnishi et al.
patent: 4264120 (1981-04-01), Uchiyama et al.
patent: 4350988 (1982-09-01), Masegi
patent: 4978849 (1990-12-01), Goddard et al.

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