Synchronous adjustment method, apparatus, and computer program p

Details Synchronous adjustment method, apparatus, and computer program p Synchronous adjustment method, apparatus, and computer program p

1998-03-03

1999-12-21

Le, Que T.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250205, 359204, 247235, H01J 314

Patent

active

060052430

ABSTRACT:
A method, system and computer-based product adjusts a synchronous operation of beams in scanning direction of a multiple beam optical system. Alternatively emitted, a standard beam and one of plural beams are scanned across an image forming body in respective scanning operations. During each scanning operation, a time interval (T1) is measured from when the standard beam is detected by a detector to when the other beam is detected. Similarly, another time interval (T2) is measured from between when the other beam is detected to when the standard beam is detected. Time intervals T1 and T2 are compared so as to distinguish the arrival order of beams and then the beams are adjusted at the source so as to compensate for a detected incorrect order or misalignment of the beams.

REFERENCES:
patent: 5140157 (1992-08-01), Ohshima et al.
patent: 5233188 (1993-08-01), Arimoto et al.
patent: 5583557 (1996-12-01), Yamamoto et al.
patent: 5903378 (1999-05-01), Takano et al.

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