Image reading apparatus

Details Image reading apparatus Image reading apparatus

2006-07-17

2009-10-13

Mackey, Patrick H (Department: 3653)

Sheet feeding or delivering

Feeding

By means to convey sheet

Reexamination Certificate

active

07600754

ABSTRACT:
The present invention provides an image reading apparatus which controls conveyance of an original in accordance with the temperature of a conveyance roller for conveying the original, and which performs appropriate conveyance by determining the presence of an abnormality in a temperature detection operation. A copying apparatus uses a temperature detection sensor to detect the temperature of an outlet conveyance roller for conveying an original, which is driven to rotate by a stepping motor, and adjusts the speed at which the original is conveyed by the outlet conveyance roller to a predetermined basic conveyance speed by controlling the rotation of the stepping motor on the basis of a detection signal of the temperature detection sensor. Further, the presence of an abnormality in the detection signal of the temperature detection sensor is determined, and if an abnormality is present, conveyance speed adjustment is halted.

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