Patent ID: 11956393
Assignee: BROTHER KOGYO KABUSHIKI KAISHA
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A reading device, comprising:
a reading sensor configured to read an original;
a platen on which the original is to be placed; and
a controller,
wherein the platen is configured such that a first original and a second original longer in a first direction than the first original can be placed, and
wherein the controller is configured to execute:
a moving process of moving the reading sensor being in a non-reading state from an initial position to a first position that is determined in advance as a standby position for starting detection of edges of the first original;
a first preliminary scanning process of causing the reading sensor to execute a first reading operation for detecting edges of the original while causing the reading sensor to move from the first position by a predetermined distance in the first direction to detect edges of the original;
when, in the first preliminary scanning process, an edge of the original in the first direction and an edge of the original in a second direction orthogonal to the first direction are detected, or when, in the first preliminary scanning process, neither the edge of the original in the first direction nor the edge of the original in the second direction are detected, a second preliminary scanning process of causing the reading sensor to execute the first reading operation while causing the reading sensor to move toward the initial position to detect the edge of the original in the first direction;
when, in the first preliminary scanning process, the edge of the original in the first direction is not detected and the edge of the original in the second direction is detected, a third preliminary scanning process of causing the reading sensor to execute the first reading operation while causing the reading sensor to move in a direction away from the initial position to detect the edge of the original in the first direction; and
when, in the second preliminary scanning process or the third preliminary scanning process, the edge of the original in the first direction is detected, a first main scanning process of causing the reading sensor to execute a second reading operation for acquiring a content of the original while causing the reading sensor to move toward the initial position.