Patent ID: 11860563
Assignee: BROTHER KOGYO KABUSHIKI KAISHA
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. An image forming apparatus comprising:
a motor;
a temperature detector configured to detect an ambient temperature and to output a temperature signal corresponding to the ambient temperature;
a conveyor provided at a conveying path along which a sheet is conveyed, the conveyor being configured to convey the sheet in accordance with rotation of the motor;
a sheet detector provided at the conveying path, the sheet detector being configured to output a sheet detection signal indicative of presence or absence of the sheet; and
a controller configured to perform:
(a) controlling a conveying speed of the sheet using the conveyor by setting a rotation speed of the motor;
(b) determining whether or not a paper jam has occurred on the basis of the sheet detection signal outputted from the sheet detector; and
(c) determining, when determining in the (b) determining that the paper jam has occurred, whether or not a torque shortage has occurred, the torque shortage being shortage of a torque occurring during conveyance of the sheet using the conveyor,

wherein, in the (a) controlling, the controller is configured to perform:
when determining in the (c) determining that the torque shortage has occurred, and the paper jam is resolved and subsequently conveyance of the sheet is resumed,
setting, when the temperature signal indicates that the ambient temperature is higher than a predetermined temperature, the rotation speed of the motor such that the conveying speed of the sheet becomes a first conveying speed; and
setting, when the temperature signal indicates that the ambient temperature is lower than or equal to the predetermined temperature, the rotation speed of the motor such that the conveying speed of the sheet becomes a second conveying speed that is slower than the first conveying speed.