Method reading apparatus and control method thereof having...

Details Method reading apparatus and control method thereof having... Method reading apparatus and control method thereof having...

2007-02-06

2007-02-06

Luu, Thanh X. (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C250S208100, C358S509000, C358S480000, C358S515000, C358S520000

Reexamination Certificate

active

10886674

ABSTRACT:
The deterioration of read-image quality caused by LED color-tone variations is suppressed in a case in which a white-color LED illumination module is used as a light source of a color-image reading apparatus. The color-image reading apparatus includes an illumination module formed of a plurality of white-color LEDs arranged in a main-scanning direction; an image sensor such as a CCD; a unit for moving the original and the image sensor relatively in a sub-scanning direction; and an input masking unit. The illumination module is formed of LEDs having the same color-tone rank. The color-image reading apparatus also includes a setting unit for setting a color-tone rank for the illumination module, and a control unit, such as a CPU, for switching a parameter of the input masking unit according to the color-tone rank.

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Office Action from a foreign counterpart dated Jan. 10, 2006.

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