Method and apparatus for automatic correction of direct...

Details Method and apparatus for automatic correction of direct... Method and apparatus for automatic correction of direct...

2005-12-15

2008-10-21

Nguyen, Hung Henry (Department: 2851)

Photocopying

Projection printing and copying cameras

Focus or magnification control

C355S052000

Reexamination Certificate

active

07440080

ABSTRACT:
An automatic correction method for a direct exposure apparatus illuminates two exposure elements, which are included in adjacent exposure heads separately and which are to expose an identical line on an exposure target, among exposure elements arranged in a two-dimensional manner with an inclination of relative movement of an exposure target in a plurality of exposure heads arranged in the direction of the relative movement of the exposure target; detects the illumination of the two exposure elements by using a sensor board (11) that is moved, on the side where the exposure heads are illuminated, in the direction in which the exposure heads are arranged; and calculates correction amounts for correcting so that the two exposure elements can expose the identical line mentioned above, based on a detection result of the illumination of the exposure elements by the sensor board (11).

REFERENCES:
patent: 6529265 (2003-03-01), Henningsen
patent: 7280129 (2007-10-01), Takada
patent: 10-112579 (1998-04-01), None
patent: 2001-519925 (2001-10-01), None
patent: 2001-521672 (2001-11-01), None
patent: 2004-226520 (2004-08-01), None
patent: 98/47042 (1998-10-01), None

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