Fixing device for image forming apparatus and control method thereof
AssigneesKabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
InventorsOsamu Takagi, Satoshi Kinouchi, Yoshinori Tsueda, Toshihiro Sone
Life of this patent
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Abstract
A fixing device of this invention enables variable control of power to be supplied to a heat roller side or a press roller side in accordance with the temperature of the heat roller and the press roller while each mode is carried out. In a copy mode, the temperature of the heat roller and the press roller is finely controlled. In a copy standby mode, only the power required for maintaining a set temperature is supplied.
Claims20
A fixing device for an image forming apparatus comprising:
- an image-side rotating member;
- a non-image-side rotating member configured to nip and carry a fixing target medium having a toner image thereon into a predetermined direction together with the image-side rotating member;
- a first heating source configured to heat the image-side rotating member;
- a second heating source configured to heat the non-image-side rotating member;
- and
- a control unit configured to variably control power to be supplied to the first heating source while the image-side rotating member is carrying out an arbitrary operation mode.
A fixing device for an image forming apparatus comprising:
- image-side rotating means for heating a side of a fixing target medium on which a toner image is formed;
- non-image-side rotating means for nipping and carrying the fixing target medium into a predetermined direction together with the image-side rotating means, and contacting a side of the fixing target medium on which the toner image is not formed;
- first heating source means for heating the image-side rotating means;
- second heating source means for heating the non-image-side rotating means;
- and
- control means for variably controlling power to be supplied to the first heating means while the image-side rotating means is carrying out an arbitrary operation mode.
A control method of a fixing device for an image forming apparatus comprising:
- nipping and carrying a fixing target medium having a toner image thereon into a predetermined direction by an image-side rotating member heated by a first heating source and a non-image-side rotating member heated by a second heating source;
- and
- variably controlling power to be supplied to the first heating source while the image-side rotating member is carrying out an arbitrary operation mode.
Dependencies are inferred from the claim text.