Light amount correcting method for light emitting apparatus,...

Details Light amount correcting method for light emitting apparatus,... Light amount correcting method for light emitting apparatus,...

2006-07-31

2010-06-01

Meier, Stephen D (Department: 2853)

Incremental printing of symbolic information

Electric marking apparatus or processes

Electrostatic

C347S236000, C347S237000, C347S246000, C347S247000

Reexamination Certificate

active

07728856

ABSTRACT:
A light amount correcting method for a light emitting apparatus having a plurality of light emitting devices, includes: measuring light amount values of a plurality of the light emitting devices; extracting high frequency components from the measured light amount values; extracting low frequency components from the measured light amount values; calculating a first correction value for correcting a light amount value of a first light emitting device on the basis of the high frequency components; and correcting a second correction value for correcting the light amount value of the first light emitting device on the basis of the low frequency components; and correcting a light amount value of a second light emitting device such that it is included in both of the first allowable range and the second allowable range.

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