Recording material discrimination device, image forming...

Electrophotography – Control of electrophotography process – Responsive to copy media characteristic

Reexamination Certificate

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C399S067000

Reexamination Certificate

active

07149441

ABSTRACT:
The invention is objected to perform fixing in an optimum fixing condition even with various kinds of recording materials or the like while improving usability by discriminating the kinds of recording materials An image reading sensor123includes a reflective LED301, a transmissive LED303disposed on the opposite side relative to a recording material304for detecting the transmitted amount of light, a CMOS area sensor211, and an imaging lens1113. The light from the reflective LED301as a light source is applied toward the surface of the recording material304, and the reflected light from the recording material304is collected via the lens303and an image is formed on the CMOS area sensor211. The LED301is disposed so as to apply LED light to the surface of the recording material304diagonally at a predetermined angle.

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