US 12,321,117 B2
Fixing device in which a power supply terminal in contact with an electrode of a heater and a power supply cable are arranged in an internal space of a film
Seiji Obata, Shizuoka (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Jun. 5, 2023, as Appl. No. 18/329,238.
Claims priority of application No. 2022-091291 (JP), filed on Jun. 6, 2022.
Prior Publication US 2023/0393507 A1, Dec. 7, 2023
Int. Cl. G03G 15/20 (2006.01)
CPC G03G 15/2057 (2013.01) 5 Claims
OG exemplary drawing
 
1. A fixing device that fixes a toner image formed on a recording material to the recording material by heat, the fixing device comprising:
a film having a cylindrical shape;
a heater provided in an internal space of the film, the heater including a substrate, and a plurality of heat generating blocks located on the substrate and arranged in a longitudinal direction of the heater;
a plurality of power supply terminals in contact with electrodes of the respective plurality of heat generating blocks; and
a plurality of power supply cables connected to the respective plurality of power supply terminals,
wherein each of the plurality of power supply terminals includes a contact portion in contact with the electrode and a connection portion connected to the power supply cable,
wherein the plurality of heat generating blocks includes a first heat generating block and a second heat generating block next to each other in the longitudinal direction,
wherein the plurality of power supply terminals includes a first power supply terminal in contact with the first heat generating block and a second power supply terminal in contact with the second heat generating block, the first power supply terminal and the second power supply terminal being located in the internal space of the film,
wherein the connection portion of the first power supply terminal is at a position closer to one end portion of the heater in the longitudinal direction than the contact portion of the first power supply terminal, and the connection portion of the second power supply terminal is at a position closer to the other end portion of the heater in the longitudinal direction than the contact portion of the second power supply terminal,
wherein the power supply cable connected to the connection portion of the first power supply terminal extends toward the one end portion of the heater,
wherein the power supply cable connected to the connection portion of the second power supply terminal is bent from extending toward the other end portion of the heater to extend toward the one end portion of the heater,
wherein the plurality of heat generating blocks includes a third heat generating block and a fourth heat generating block next to each other in the longitudinal direction,
wherein the plurality of power supply terminals includes a third power supply terminal in contact with the third heat generating block and a fourth power supply terminal in contact with the fourth heat generating block, the third power supply terminal and the fourth power supply terminal being located in the internal space of the film,
wherein the connection portion of the third power supply terminal is at a position closer to the one end portion of the heater in the longitudinal direction than the contact portion of the third power supply terminal, and the connection portion of the fourth power supply terminal is at a position closer to the other end portion of the heater in the longitudinal direction than the contact portion of the fourth power supply terminal,
wherein the power supply cable connected to the connection portion of the third power supply terminal is bent from extending toward the one end portion of the heater to extend toward the other end portion of the heater, and
wherein the power supply cable connected to the connection portion of the fourth power supply terminal extends toward the other end portion of the heater.