IMAGE FORMING APPARATUS
First Claim
1. An image forming apparatus, comprising:
- an image forming portion that forms an image on a recording material;
a fixing portion that fixes the image on the recording material by heating, the fixing portion being controlled to maintain a control target temperature; and
a current detection circuit that detects an input current from a commercial power supply to the apparatus,wherein in a case where a current detected by the current detection circuit exceeds a predetermined value, a maximum current suppliable to the fixing portion is restricted, and in a case where a temperature of the fixing portion falls below, in a situation where the maximum current suppliable to the fixing portion is restricted, a predetermined temperature lower than the control target temperature, a conveyance interval of the recording material conveyed to the fixing portion is extended.
1 Assignment
0 Petitions
Accused Products
Abstract
The image forming apparatus includes a current detection circuit for detecting an input current from the commercial power supply to the apparatus, in which: when a current detected by the current detection circuit exceeds a predetermined value, a maximum current suppliable to a fixing portion is restricted; and when a temperature of the fixing portion falls below, in a situation where the maximum current suppliable to the fixing portion is restricted, the predetermined temperature lower than a control target temperature, a conveyance interval of a recording material conveyed to the fixing portion is extended. In the image forming apparatus, even when a consumption current of the image forming apparatus is increased during successive image formation, it is capable of controlling the consumption current so as not to exceed a maximum current of a commercial power supply, securing desired fixability, and minimizing decline of image forming performance.
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Citations
5 Claims
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1. An image forming apparatus, comprising:
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an image forming portion that forms an image on a recording material; a fixing portion that fixes the image on the recording material by heating, the fixing portion being controlled to maintain a control target temperature; and a current detection circuit that detects an input current from a commercial power supply to the apparatus, wherein in a case where a current detected by the current detection circuit exceeds a predetermined value, a maximum current suppliable to the fixing portion is restricted, and in a case where a temperature of the fixing portion falls below, in a situation where the maximum current suppliable to the fixing portion is restricted, a predetermined temperature lower than the control target temperature, a conveyance interval of the recording material conveyed to the fixing portion is extended. - View Dependent Claims (2, 3, 4, 5)
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Specification