Title: Color information measuring device, print object information measuring device, printing device and electrronic equipment
Application Number: 200610105698 Application Date: 2006.07.12
Publication Number: 1896701 Publication Date: 2007.01.17
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G01J3/46;B41J29/38;B41F33/00
Applicant(s) Name: Sharp KK Address:
Inventor(s) Name: Watanabe Nobuhisa;Taminaga Takayuki;Wada Hideo
Attorney & Agent: shen zhaokun
Abstract:
    In the color information measuring device, the print object information measuring device, the printing device and the electronic equipment, three light fluxes of mutually different wavelengths applied to a measurement object from a red LED, a green LED and a blue LED of a light-emitting part have a common illumination area on the measurement object. The common illumination area on the measurement object contains such an observation area on the measurement object that a reflected ray is made to be incident on a photodiode via a condenser lens and a slit member. Therefore, the common illumination area in which three light fluxes of different wavelengths overlap with one another can reliably be made to be an observation area, so that intensities of a plurality of reflected rays of different wavelengths derived from the observation area can be observed equivalently, hence an improved measurement accuracy.
Time: 6