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US 2026/0147304 A1Published application
Image forming apparatus that fixes image to sheet
AssigneeCanon Kabushiki Kaisha
InventorTAKAO IZAKI
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Abstract
An image forming apparatus obtains a temperature parameter from a first temperature detected by a sensor and a second temperature detected by the sensor after the detection of the first temperature, and controls a timing of feeding of a sheet by feeding rollers or a timing of forming an image by an image forming unit based on a result of judgement of the temperature parameter and a threshold value. The threshold value is determined according to the first temperature.
Claims20
An image forming apparatus comprising:
- feeding rollers configured to feed a sheet;
- an image forming unit configured to form an image on the sheet;
- a fixing unit configured to fix the image to the sheet, the fixing unit including
- a first rotational member,
- a second rotational member in contact with the first rotational member to form a nip portion, and
- a heater configured to heat at least one of the first rotational member and the second rotational member;
- a sensor disposed in proximity to any of the first rotational member, the second rotational member, and the heater;
- and
- a controller configured to obtain a temperature parameter from a first temperature detected by the sensor and a second temperature detected by the sensor after the detection of the first temperature, and control a timing of feeding of the sheet by the feeding rollers or a timing of forming the image by the image forming unit based on a result of judgement of the temperature parameter and a threshold value determined according to the first temperature.
6 more elements
An image forming apparatus comprising:
- feeding rollers configured to feed a sheet;
- an image forming unit configured to form an image on the sheet;
- a fixing unit configured to fix the image to the sheet, the fixing unit including
- a first rotational member,
- a second rotational member in contact with the first rotational member to form a nip portion, and
- a heater configured to heat at least one of the first rotational member and the second rotational member;
- a sensor disposed in proximity to any of the first rotational member, the second rotational member, and the heater, and
- a controller configured to acquire a first temperature detected by the sensor, compare a threshold value with a second temperature detected by the sensor after an elapse of a predetermined time since the detection of the first temperature, and control a timing of feeding of the sheet by the feeding rollers or a timing of forming the image by the image forming unit based on a result of judgement of the second temperature and the threshold value determined according to the first temperature.
5 more elements
Dependencies are inferred from the claim text.