Photocopying – Projection printing and copying cameras – Step and repeat
Reexamination Certificate
2007-07-17
2007-07-17
Rutledge, D. (Department: 2851)
Photocopying
Projection printing and copying cameras
Step and repeat
C355S072000, C355S075000, C378S034000, C378S035000, C250S492200, C356S400000
Reexamination Certificate
active
11449812
ABSTRACT:
An exposure apparatus which exposes substrates to a pattern on a master. The apparatus includes first, second and third chucks which hold the substrates, a first fine adjustment stage which holds the first chuck to perform fine driving, a second fine adjustment stage which holds the second chuck to perform fine driving, a coarse adjustment stage on which the first and second fine adjustment stages are mounted and which can move in an X-Y plane substantially perpendicular to an optical axis, an exposure unit which performs exposure operation for the substrate held by the first chuck, a measurement unit which performs measurement operation for the substrate held by the second chuck, and a controller which drives the coarse adjustment stage and causes the measurement and exposure units to perform the measurement and exposure operations, respectively.
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Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
Rutledge D.
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