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US 10,241,450 B2Granted
Fixing device and image forming apparatus including a potential-difference application unit
AssigneeFuji Xerox Co., Ltd.
InventorsSou Morizaki, Yasutaka Gotoh, Jouta Kobayashi, Kazuaki Iikura, Kazuyoshi Itoh, Yasushi Nagata, Takaaki Sato
Life of this patent
Estimating the term…
Abstract
A fixing device includes a heating unit that rotates and that fixes a toner image on a recording medium, a pressing unit that rotates and that presses the heating unit, and a potential-difference application unit that applies a potential difference between the pressing unit and the heating unit so that a potential of the heating unit is higher than a potential of the pressing unit.
Claims9
A fixing device comprising:
- a heating unit configured to rotate and fix a toner image on a recording medium;
- a pressing unit configured to rotate and press the heating unit;
- and
- a potential-difference application unit configured to apply a potential difference between the pressing unit and the heating unit so that an absolute value of a potential of the heating unit is higher than an absolute value of a potential of the pressing unit,
- wherein the pressing unit is grounded,
- wherein the heating unit is grounded through the potential-difference application unit,
- wherein the pressing unit is grounded through a pressing-unit resistor having a predetermined resistance value, and
- wherein the potential-difference application unit is a heating-unit resistor having a resistance value higher than the resistance value of the pressing-unit resistor.
5 more elements
A fixing device comprising:
- a heating unit configured to rotate and fix a toner image on a recording medium;
- a pressing unit configured to rotate and press the heating unit;
- and
- a potential-difference application unit configured to apply a potential difference between the pressing unit and the heating unit so that an absolute value of a potential of the heating unit is higher than an absolute value of a potential of the pressing unit,
- wherein the heating unit and the pressing unit are grounded after being connected into one wire by a connecting portion, and
- wherein the heating unit reaches the connecting portion through the potential-difference application unit.
3 more elements
An image forming apparatus comprising:
- an image forming unit configured to form a toner image on a recording medium;
- a heating unit configured to rotate and fix the toner image formed on the recording medium by the image forming unit;
- a pressing unit configured to rotate and press the heating unit;
- and
- a potential-difference application unit configured to apply a potential difference between the pressing unit and the heating unit so that an absolute value of a potential of the heating unit is higher than an absolute value of a potential of the pressing unit,
- wherein the pressing unit is grounded,
- wherein the heating unit is grounded through the potential-difference application unit,
- wherein the pressing unit is grounded through a pressing-unit resistor having a predetermined resistance value, and
- wherein the potential-difference application unit is a heating-unit resistor having a resistance value higher than the resistance value of the pressing-unit resistor.
6 more elements
Dependencies are inferred from the claim text.