Fixing Device and Image Forming Apparatus Including A Potential-difference Application Unit

Content Provider	The Lens
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.
Related Links	https://www.lens.org/lens/patent/010-262-280-109-900/frontpage
Language	English
Publisher Date	2019-03-26
Access Restriction	Open
Content Type	Text
Resource Type	Patent
Jurisdiction	United States of America
Date Applied	2017-09-07
Agent	Sughrue Mion, Pllc
Applicant	Fuji Xerox Co Ltd
Application No.	201715697939
Claim	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. The fixing device according to claim 1 , wherein the heating unit includes a sheet-shaped heat generator. 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. The fixing device according to claim 3 , wherein the potential-difference application unit comprises a heating-unit resistor having a predetermined resistance value. The fixing device according to claim 4 , wherein the pressing unit reaches the connecting portion through a pressing-unit resistor having a predetermined resistance value. The fixing device according to claim 3 , wherein the pressing unit reaches the connecting portion through a pressing-unit resistor having a predetermined resistance value. The fixing device according to claim 3 , wherein the pressing unit reaches the connecting portion through a pressing-unit resistor having a predetermined resistance value, and wherein the potential-difference application unit comprises a heating-unit resistor having a resistance value higher than the resistance value of the pressing-unit resistor. The fixing device according to claim 3 , wherein another resistor is provided between the connecting portion and a ground. 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.
CPC Classification	ELECTROGRAPHY;ELECTROPHOTOGRAPHY;MAGNETOGRAPHY
Examiner	David M. Gray Laura Roth
Extended Family	010-262-280-109-900 032-000-618-879-821 035-288-547-010-372
Patent ID	10241450
Inventor/Author	Morizaki Sou Gotoh Yasutaka Kobayashi Jouta Iikura Kazuaki Itoh Kazuyoshi Nagata Yasushi Sato Takaaki
IPC	G03G15/20
Status	Active
Owner	Fujifilm Business Innovation Corp
Simple Family	010-262-280-109-900 032-000-618-879-821 035-288-547-010-372
CPC (with Group)	G03G15/2039 G03G15/2053 G03G15/206 G03G15/2032 G03G2215/2038
Issuing Authority	United States Patent and Trademark Office (USPTO)
Kind	Patent/New European patent specification (amended specification after opposition procedure)