| US 7,592,574 B2 | ||
| Light source control apparatus, image reading apparatus, image forming apparatus, medium storing light source part control program, and method for controlling of light source part by adjusting light quantity ratios | ||
| Norikazu Sakai, Ebina (Japan); and Mitsuo Shimizu, Ebina (Japan) | ||
| Assigned to Fuji Xerox Co., Ltd., Tokyo (Japan) | ||
| Filed on Jun. 04, 2007, as Appl. No. 11/806,825. | ||
| Claims priority of application No. 2006-309119 (JP), filed on Nov. 15, 2006. | ||
| Prior Publication US 2008/0111055 A1, May 15, 2008 | ||
| Int. Cl. G01J 1/32 (2006.01) | ||
| U.S. Cl. 250—205 [358/475; 358/518] | 9 Claims |
| 1. A light source control apparatus comprising:
a light quantity detection unit that detects light quantities according to a result of reading out reflection light of three
primary colors of light emitted onto a reference white board from a light source part, the three primary colors of light corresponding
to red, green, and blue;
a light quantity ratio calculation unit that calculates light quantity ratios of the reflection light detected by the light
quantity detection unit;
a determination unit that, when the light quantity detection unit detects light quantities of the three primary colors of
light emitted onto the reference white board from the light source part, determines whether or not the light quantity ratios
calculated by the light quantity ratio calculation unit are within a predetermined range; and
a light quantity ratio adjustment unit that adjusts the light quantity ratios of the three primary colors of light emitted
onto the reference white board from the light source part on the basis of a light quantity of green-colored reflection light
emitted onto the reference white board from the light source part and corresponding to a determination by the determination
unit.
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