Image heating apparatus
AssigneeCanon Kabushiki Kaisha
InventorNobuaki Hara
Life of this patent
Estimating the term…
Abstract
An image heating apparatus includes an endless belt for heating a toner image on a sheet in a nip; a driving rotatable member for cooperating with the belt to form the nip and for rotating the belt; a pressing pad for pressing the belt from an inside of the belt toward the driving rotatable member; a heating device for heating the belt; and a controller configured to execute, in a stand-by mode following a warming-up mode, intermittent heating operation of the heating device for the belt while rotating the belt by the driving rotatable member, wherein the controller is capable of executing, after executing the intermittent heating operation in a first rest period in the stand-by mode, the intermittent heating operation by a second rest period which is longer than the first rest period.
Claims20
An image heating apparatus comprising:
- an endless belt configured and positioned to heat a toner image on a sheet in a nip;
- a driving rotatable member configured and positioned to cooperate with said endless belt to form the nip and to rotate said endless belt;
- a pressing pad configured and positioned to press said endless belt from an inside of said endless belt toward said driving rotatable member;
- a heating device configured and positioned to heat said endless belt;
- and
- a controller configured to execute, in a stand-by mode following a warming-up mode, intermittent heating operation of said heating device for said endless belt while rotating said endless belt by said driving rotatable member,
- wherein said controller is capable of executing, after executing the intermittent heating operation in a first rest period in the stand-by mode, the intermittent heating operation by a second rest period which is longer than the first rest period.
An image heating apparatus comprising:
- an endless belt configured and positioned to heat a toner image on a sheet in a nip;
- a driving rotatable member configured and positioned to cooperate with said endless belt to form the nip and to rotate said endless belt;
- a pressing pad configured and positioned to press said endless belt from an inside of said endless belt toward said driving rotatable member;
- a heating device configured and positioned to heat said endless belt;
- a temperature sensor configured and positioned to detect a temperature of said endless belt;
- and
- a controller configured to control said heating device in accordance with an output of said temperature sensor;
- wherein in a stand-by mode, said controller operates said driving rotatable member when said heating device is operated, and stops said driving rotatable member when said heating device is stopped,
- wherein in the stand-by mode, said controller is capable of executing control of said heating device so that the temperature of said endless belt is maintained within a first temperature range, and then executing control of said heating device so that the temperature of said endless belt is maintained within a second temperature range having a lower limit temperature which is lower than that of the first temperature range.
An image heating apparatus comprising:
- an endless belt configured and positioned to heat a toner image on a sheet in a nip;
- a driving rotatable member configured and positioned to cooperate with said endless belt to form the nip and to rotate said endless belt;
- a pressing pad configured and positioned to press said endless belt from an inside of said endless belt toward said driving rotatable member;
- a heating device configured and positioned to heat said endless belt;
- and
- a controller configured to execute, in a, intermittent heating operation of said endless belt by said heating device, while rotating said endless belt by said driving rotatable member,
- wherein said controller is capable of executing a first mode operation in which said heating operation is intermittently carried out in a first rest period, and a second mode operation in which said heating operation is intermittently carried out in a second rest period which is longer than the first rest period.
Dependencies are inferred from the claim text.