IMAGE READING APPARATUS AND IMAGE FORMING APPARATUS

摘要

An image reading apparatus includes a carriage, a carriage detector, and a control unit. The carriage detector outputs a detection signal of the carriage when the carriage is at the home position, and outputs a non-detection signal of the carriage when the carriage is located closer to a document size reading position than a predetermined position between the home position and the document size reading position. The control unit moves the carriage to the home position when the image reading apparatus enters a sleep mode, keeps the carriage detained while performing initialization after the sleep mode is cancelled, and moves the carriage, upon receipt of a scanning instruction after the initialization is completed, toward the document size reading position in the case where the carriage detector outputs the detection signal of the carriage.

主权项

1. An image reading apparatus comprising:
a document table; a reading unit including a carriage configured to reciprocate in a sub scanning direction, and emit reading light onto a source document placed on the document table and receive reflected light of the reading light; a carriage detector located between a home position and a document size reading position of the carriage, and configured to (i) output a detection signal of the carriage when the carriage is at the home position and (ii) output a non-detection signal of the carriage when the carriage is located closer to the document size reading position than a predetermined position between the home position and the document size reading position; a reception unit configured to receive an instruction to read the source document; a detection unit configured to detect an operation of setting the source document on the image reading apparatus; and a control unit configured to control a position of the carriage, the control unit being configured to (i) move the carriage to the home position when the image reading apparatus enters a sleep mode, (ii) keep the carriage detained when initialization is to be performed after the sleep mode is cancelled, (iii) confirm, after the initialization is completed, a signal outputted from the carriage detector in the case where the reception unit receives the reading instruction, or in the case where the detection unit detects the operation of setting the source document on the image reading apparatus, and (iv) move the carriage toward the document size reading position in the case where the carriage detector outputs the detection signal of the carriage.