Image forming apparatus that controls rotation of a rotating unit and a heating process of a heating portion
First Claim
1. An image forming apparatus that fixes a toner image, formed on a recording material, to the recording material by applying heat and pressure, the image forming apparatus comprising:
- a rotating unit;
a pressing portion configured to form a nip portion with the rotating unit for nipping the recording material to be conveyed;
a heating portion configured to heat the nip portion, formed by the rotating unit and the pressing portion, by performing a heating operation; and
a controller configured to change the rotating unit between a rotating state, in which the rotating unit rotates, and a stop state, in which the rotating unit stops, and to control a temperature of the heating portion to be a predetermined temperature by performing the heating operation, wherein the controller performs, in order, (i) a non-heating rotating process of setting the rotating unit in the rotating state without controlling the temperature of the heating portion to be the predetermined temperature by performing the heating operation, after fixing the toner image on the recording material, (ii) a heating rotating process of controlling the temperature of the heating portion to be the predetermined temperature by performing the heating operation while setting the rotating unit in the rotating state, and (iii) a heating stopping process of controlling the temperature of the heating portion to be the predetermined temperature by performing the heating operation while setting the rotating unit in the stop state, the controller stopping the heating operation in the heating stopping process after a predetermined period.
1 Assignment
0 Petitions
Accused Products
Abstract
An image forming apparatus includes a controller that changes a rotating unit between a rotating state and a stop state, and a temperature of a heating portion to be a predetermined temperature by performing a heating operation. The controller performs, in order, a non-heating rotating process of setting the rotating unit in the rotating state, without controlling the temperature of the heating portion, after fixing the toner image on the recording material, a heating rotating process of controlling the temperature of the heating portion to be the predetermined temperature while setting the rotating unit in the rotating state, and a heating stopping process of controlling the temperature of the heating portion to be the predetermined temperature while setting the rotating unit in the stop state. The controller stops the heating operation in the heating stopping process after a predetermined period.
6 Citations
16 Claims
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1. An image forming apparatus that fixes a toner image, formed on a recording material, to the recording material by applying heat and pressure, the image forming apparatus comprising:
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a rotating unit; a pressing portion configured to form a nip portion with the rotating unit for nipping the recording material to be conveyed; a heating portion configured to heat the nip portion, formed by the rotating unit and the pressing portion, by performing a heating operation; and a controller configured to change the rotating unit between a rotating state, in which the rotating unit rotates, and a stop state, in which the rotating unit stops, and to control a temperature of the heating portion to be a predetermined temperature by performing the heating operation, wherein the controller performs, in order, (i) a non-heating rotating process of setting the rotating unit in the rotating state without controlling the temperature of the heating portion to be the predetermined temperature by performing the heating operation, after fixing the toner image on the recording material, (ii) a heating rotating process of controlling the temperature of the heating portion to be the predetermined temperature by performing the heating operation while setting the rotating unit in the rotating state, and (iii) a heating stopping process of controlling the temperature of the heating portion to be the predetermined temperature by performing the heating operation while setting the rotating unit in the stop state, the controller stopping the heating operation in the heating stopping process after a predetermined period. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An image forming apparatus that fixes a toner image, formed on a recording material, to the recording material by applying heat and pressure, the image forming apparatus comprising:
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a rotating unit; a pressing portion configured to form a nip portion with the rotating unit for nipping the recording material to be conveyed; a heating portion configured to heat the nip portion, formed by the rotating unit and the pressing portion, by performing a heating operation; and a controller configured to select to perform one mode from a plurality of modes including a first mode and a second mode, wherein in the first mode, the controller performs, in order, (i) a non-heating rotating process of setting the rotating unit in a rotating state without controlling a temperature of the heating portion to be a predetermined temperature by performing the heating operation, after fixing the toner image on the recording material, (ii) a heating rotating process of controlling the temperature of the heating portion to be the predetermined temperature by performing the heating operation while setting the rotating unit in the rotating state, in which the rotating unit rotates, and (iii) a heating stopping process of controlling the temperature of the heating portion to be the predetermined temperature by performing the heating operation while setting the rotating unit in a stop state, in which the rotating unit stops, in the second mode, the non-heating rotating process is performed, after fixing the toner image on the recording material, and then the heating stopping process is performed without performing the heating rotating process, and in both the first mode and the second mode, the controller stops the heating operation in the heating stopping process after a predetermined period. - View Dependent Claims (16)
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Specification