Image reader

Details Image reader Image reader

2005-08-09

2005-08-09

Lee, Cheukfan (Department: 2622)

Facsimile and static presentation processing

Facsimile

Picture signal generator

C358S475000, C358S482000, C358S483000, C358S445000, C358S468000

Reexamination Certificate

active

06927881

ABSTRACT:
When an image reader is in a stand-by state in which the image reader can read an original, supply of a clock signal from a clock generation circuit to a line sensor is halted. Hence, supply of a clock signal does not need power. As a result of supply of the clock signal to the line sensor being halted, there can be reduced generation of a dark current due to the head developing in the line sensor and generation of Electromagnetic Interference. Consequently, the noise in read image data is reduced, thereby improving the picture quality of a read image. In the stand-by state, supply of only a clock signal to the line sensor is halted. Hence, the time required for warming up the line sensor is nominal. Upon receipt of a reading instruction, the image reader can immediately start reading an original, thus improving operability of the image reader.

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