Control method of scanner optical system of original image readi

Details Control method of scanner optical system of original image readi Control method of scanner optical system of original image readi

1997-07-14

2000-02-29

Grant, II, Jerome

Facsimile and static presentation processing

Facsimile

Synchronization

358419, 358421, H04N 136

Patent

active

060316330

ABSTRACT:
An original image reading apparatus comprises an exposure optical system including a scanner optical system which can perform go and return operations, a scanner driving motor which drives said scanner optical system, velocity detecting means for detecting a moving velocity of said scanner optical system and position detecting means for detecting the position of said scanner optical system. In the apparatus, return control is performed which is control of returning said scanner optical system after an original image reading scan has been finished. A target velocity is calculated from a residual distance from a current position of said scanner optical system to a target reference position. Target acceleration is used as feedforward. Velocity control is performed so that detected velocity follows the target velocity.

REFERENCES:
patent: 5404206 (1995-04-01), Andoh et al.
patent: 5610721 (1997-03-01), Higuchi
patent: 5805208 (1998-09-01), Meierdiercks

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