Photocopying – Projection printing and copying cameras – Step and repeat
Patent
1998-11-13
2000-11-28
Adams, Russell
Photocopying
Projection printing and copying cameras
Step and repeat
355 67, G03B 2742, G03B 2754
Patent
active
061542695
ABSTRACT:
In a scan type exposure apparatus which provides relative movement between an exposure beam and an object in a predetermined direction to expose the object, performance of the apparatus is evaluated by a method that comprises detecting the exposure beam under an operation condition to be used in a scan exposure for the object, and evaluating the performance of the apparatus based on information obtained by detecting the exposure beam. The operation condition may be one that causes unevenness in the integrated exposure amount for the object to be exposed or movement speed of a movable member holding the object. The detecting may involve the detection of exposure beam pulses.
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Adams Russell
Fuller Rodney
Nikon Corporation
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