Patent ID: 8937273
Filing Date: 2015-01-20
Classification: H04N

Abstract:
1. An image reading device comprising: a photoelectric transducer that includes a color reading sensor, a monochrome reading sensor, and a signal-charge draining unit, the photoelectric transducer being configured to read images in any one of a color reading mode and a monochrome reading mode; and a drive control unit that controls driving of the photoelectric transducer, wherein the signal-charge draining unit drains output signal charges of any one of the color reading sensor and the monochrome reading sensor therefrom, based on a reset pulse being a pulse signal with a predetermined pulse width that is output for every one pulse of a transfer signal supplied with a pulse shape from the drive control unit during image reading, and the drive control unit outputs the reset pulse with a pulse width larger than the predetermined pulse width at switching from the color reading mode to the monochrome reading mode or from the monochrome reading mode to the color reading mode.