Image reading apparatus

摘要

An image reading apparatus includes: a reading unit; a feeding unit; a carriage; a motor-side transmission gear for transmitting power from a motor; a carriage-side transmission gear for transmitting the power to the carriage; a feeding unit-side transmission gear for transmitting the power to the feeding unit; a switching gear switched between a meshing state with the carriage-side transmission gear at a carriage-side position and a meshing state with the feeding unit-side transmission gear at a feeding unit-side position; and a control device for performing: a first switching process for meshing the switching gear with the feeding unit-side transmission gear; a second switching process for meshing the switching gear with the carriage-side transmission gear; and an initialization process of the reading unit.

主权项

1. An image reading apparatus comprising:
a reading unit configured to read an image of a document; a feeding unit configured to feed the document; a carriage configured to hold the reading unit and move the reading unit in a predetermined direction; a motor; a motor-side transmission gear configured to transmit power supplied from the motor; a carriage-side transmission gear configured to transmit the power to the carriage when executing a moving reading of moving the carriage to read the image of the document; a feeding unit-side transmission gear configured to transmit the power to the feeding unit when executing a feeding reading of reading the image of the document that is fed by the feeding unit; a switching gear configured to:
mesh with the feeding unit-side transmission gear at a feeding unit-side position, in which the motor-side transmission gear and the feeding unit-side transmission gear are coupled at a state where the carriage is located at a feeding reading position that is a document reading position, when executing the feeding reading: andmesh with the carriage-side transmission gear at a carriage-side position, in which the motor-side transmission gear and the carriage-side transmission gear are coupled, when executing the moving reading,wherein the switching gear is configured to switch between a meshing state with the carriage-side transmission gear and a meshing state with the feeding unit-side transmission gear; and a control device configured to perform:
a first switching process for meshing the switching gear with the feeding unit-side transmission gear before performing an initialization process of the reading unit;a second switching process for meshing the switching gear with the carriage-side transmission gear after performing the first switching process; andthe initialization process of the reading unit after performing the second switching process.