Patent ID: 9578204
Date: 2017-02-21
CPC Classifications: H04N

Claim:
1. An image reading device comprising: a document stand at which a document can be fixed; a document transport unit which transports a document which is placed on a placing table on a path which passes through a reading position; a carriage which includes a reading portion, and can move in a reading range in which a document fixed at the document stand can be read using the reading portion, and a movement range including the reading position; a movement driving unit which moves the carriage; a control unit which controls the document transport unit, the reading portion, and the movement driving unit, and performs a reading operation in a first mode in which a document fixed at the document stand is read using the reading portion by moving the carriage in the reading range, and the carriage returns to a first standby position, and a second mode in which the document which is transported using the document transport unit is read using the reading portion in a state in which the carriage is stopped in the reading position, and the carriage stops in a second standby position; and a first white reference body and a second white reference body for a shading correction, wherein the first white reference body is arranged in a position which is closer to the first standby position than the second white reference body, and the second white reference body is arranged in a position which is closer to the second standby position than the first white reference body, and wherein, when one of the first or the second white reference body is to be read using the reading portion before a reading operation in the second mode, the control unit causes the carriage to read the second white reference body when the carriage is in the second standby position, and causes the carriage to read the first white reference body when the carriage is in the first standby position.