US 11,747,756 B2
Heater and fixing apparatus
Kazushi Nishikata, Tokyo (JP); Ryota Ogura, Numazu (JP); Takafumi Suzuki, Suntou-gun (JP); Seiji Obata, Mishima (JP); and Koichi Yamada, Mishima (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Apr. 6, 2021, as Appl. No. 17/223,926.
Application 17/223,926 is a continuation of application No. 16/414,586, filed on May 16, 2019, granted, now 10,996,598.
Claims priority of application No. 2018-103911 (JP), filed on May 30, 2018.
Prior Publication US 2021/0223728 A1, Jul. 22, 2021
Int. Cl. G03G 15/20 (2006.01)
CPC G03G 15/2039 (2013.01) [G03G 15/2053 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A heater for use in a fixing apparatus configured to fix an unfixed toner image formed on a recording material to the recording material, the heater comprising:
a substrate;
a plurality of heat generation members which is formed on a first surface of the substrate and is controllable independently of each other;
a first electrode group which is formed on the first surface and with which a plurality of first power feeding terminals configured to feed power to the plurality of heat generation members and provided to the fixing apparatus is in contact;
a plurality of temperature detection elements formed on a second surface of the substrate which is on an opposite side to the first surface; and
a second electrode group which is formed on the second surface and with which a plurality of second power feeding terminals configured to feed power to the plurality of temperature detection elements and provided to the fixing apparatus is in contact,
wherein at least an electrode of the first electrode group and at least an electrode of the second electrode group are formed in a region nearer to one edge portion of the substrate than to a center of the substrate in a longitudinal direction of the substrate,
wherein the electrode of the first electrode group formed in the region nearer to the one edge portion of the substrate is provided at a position nearer to the one edge portion than the electrode of the second electrode group formed in the region nearer to the one edge portion of the substrate, and
wherein the electrode that is nearest to the second electrode group in the longitudinal direction among the first electrode group formed in the region nearer to the one edge portion and the second electrode group are provided with a space between the electrode and the second electrode group.