Sheet conveying device, image forming apparatus, and operation control method capable of suppressing occurrence of problems relating to pair of conveying members used for sheet position correction
A sheet conveying device includes a sensor, a movement control portion, a detection processing portion, and a switching processing portion. The sensor detects a position in a width direction of a sheet conveyed by a pair of conveying members. The movement control portion controls the movement along the width direction of the pair of conveying members which is nipping the sheet, based on an amount of shift between the position detected by the sensor and a reference position. The detection processing portion detects a sheet size of the sheet. The switching processing portion switches between permitting and not permitting the movement of the pair of conveying members based on a sheet size associated with a sheet feed source and the sheet size detected by the detection processing portion.
1 . A sheet conveying device comprising:
an operation display portion;
a sheet feed cassette configured to accommodate a sheet;
a pair of conveying members provided to be movable along a width direction orthogonal to a conveying direction of the sheet and configured to nip and convey the sheet from the sheet feed cassette;
a sensor configured to detect a position in the width direction of the sheet conveyed by the pair of conveying members;
a movement control portion configured to control movement along the width direction of the pair of conveying members which is nipping the sheet, based on an amount of shift between a detection position detected by the sensor and a reference position based on a sheet size corresponding to the sheet feed cassette set in accordance with a user operation on the operation display portion;
a detection processing portion configured to detect a sheet size of the sheet accommodated in the sheet feed cassette; and
a switching processing portion configured to determine, before the conveyance of the sheet from the sheet feed cassette starts, whether the sheet size corresponding to the sheet feed cassette set in accordance with the user operation on the operation display portion matches the sheet size of the sheet detected by the detection processing portion, and switch between permitting and not permitting the movement of the pair of conveying members by the movement control portion, based on a result of the determination.
2 . The sheet conveying device according to claim 1 , wherein
the switching processing portion permits the movement of the pair of conveying members by the movement control portion when the sheet size corresponding to the sheet feed cassette set in accordance with the user operation on the operation display portion matches the sheet size of the sheet detected by the detection processing portion and does not permit the movement of the pair of conveying members by the movement control portion when the sheet size corresponding to the sheet feed cassette set in accordance with the user operation on the operation display portion does not match the sheet size of the sheet detected by the detection processing portion.
3 . The sheet conveying device according to claim 1 , wherein
the switching processing portion permits the movement of the pair of conveying members by the movement control portion when the sheet size corresponding to the sheet feed cassette set in accordance with the user operation on the operation display portion is included in a sheet size group corresponding to the sheet size of the sheet detected by the detection processing portion, and does not permit the movement of the pair of conveying members by the movement control portion when the sheet size corresponding to the sheet feed cassette set in accordance with the user operation on the operation display portion is not included in the sheet size group.
4 . The sheet conveying device according to claim 1 , further comprising:
a notification processing portion configured to notify when the movement of the pair of conveying members is not permitted by the switching processing portion.
5 . An image forming apparatus comprising:
the sheet conveying device according to claim 1 ; and
an image forming portion configured to form an image on the sheet conveyed by the sheet conveying device.
6 . An operation control method executed by a sheet conveying device comprising: an operation display portion, a sheet feed cassette configured to accommodate a sheet; a pair of conveying members provided to be movable along a width direction orthogonal to a conveying direction of the sheet and configured to nip and convey the sheet from the sheet feed cassette; a sensor configured to detect a position in the width direction of the sheet conveyed by the pair of conveying members; and a movement control portion configured to control movement along the width direction of the pair of conveying members which is nipping the sheet, based on an amount of shift between a detection position detected by the sensor and a reference position based on a sheet size corresponding to the sheet feed cassette set in accordance with a user operation on the operation display portion, the operation control method comprising:
a detection step of detecting a sheet size of the sheet accommodated in the sheet feed cassette; and
a switching step of determining, before the conveyance of the sheet from the sheet feed cassette starts, whether the sheet size corresponding to the sheet feed cassette set in accordance with the user operation on the operation display portion matches the sheet size of the sheet detected by the detection step, and switching between permitting and not permitting the movement of the pair of conveying members by the movement control portion, based on a result of the determination.