Incremental printing of symbolic information – Light or beam marking apparatus or processes – Scan of light
Reexamination Certificate
2008-03-25
2008-03-25
Meier, Stephen (Department: 2853)
Incremental printing of symbolic information
Light or beam marking apparatus or processes
Scan of light
C347S241000
Reexamination Certificate
active
10498061
ABSTRACT:
The invention is directed to the provision of an exposure apparatus that can determine a correction value for each individual light-emitting part by employing a method that detects the amount of light corresponding to one particular light-emitting part from composite light containing light rays from adjacent light-emitting parts, and also to the provision of a method for producing such an exposure apparatus. The production method according to the invention comprises the steps of lighting a plurality of light-emitting parts at the same time, detecting an output light-amount distribution across all of the plurality of light-emitting parts by making measurements using a line-like light-receiving device, detecting a peak position corresponding to each light-emitting part by using the output light-amount distribution; detecting the amount of light of each light-emitting part based on the peak position, and determining, based on the amount of light of each light-emitting part, the correction value for correcting nonuniformity in the amount of light of the light-emitting part.
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Iwako Akinobu
Masubuchi Sadao
Shiota Akira
Yasunaga Makoto
Yokoyama Masafumi
Citizen Holdings Co. Ltd.
Finnegan Henderson Farabow Garrett & Dunner L.L.P.
Martinez, Jr. Carlos A.
Meier Stephen
LandOfFree
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