US 12,468,246 B2
Heat conduction member for preventing fuser heater from local overheating
Sunhyung Lee, Seongnam-si (KR); and Hojin Ryu, Seongnam-si (KR)
Assigned to Hewlett-Packard Development Company, L.P., Spring, TX (US)
Appl. No. 18/695,790
Filed by Hewlett-Packard Development Company, L.P., Spring, TX (US)
PCT Filed May 18, 2022, PCT No. PCT/US2022/029760
§ 371(c)(1), (2) Date Mar. 26, 2024,
PCT Pub. No. WO2023/075862, PCT Pub. Date May 4, 2023.
Claims priority of application No. 10-2021-0144460 (KR), filed on Oct. 27, 2021.
Prior Publication US 2024/0402635 A1, Dec. 5, 2024
Int. Cl. G03G 15/20 (2006.01)
CPC G03G 15/2053 (2013.01) [G03G 15/2064 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A fuser comprising:
a flexible fusing belt;
a backup member located outside the fusing belt to form a fusing nip with the fusing belt;
a heater substrate having a first surface including a heating element pattern and a second surface, opposite to the first surface, to heat the fusing belt in the fusing nip; and
a heat conduction member in contact with the first surface of the heater substrate to distribute the heat of the heater substrate,
wherein the heating element pattern includes a first heating element having a first length greater than a width of a first print medium, and a second heating element having a second length greater than a width of a second print medium and greater than the first length,
wherein the first heating element includes a first heating area to overlap with the first print medium, and a second heating area that does not overlap with the first print medium and extends from end portions of the first heating area,
wherein a portion of the heat conduction member overlaps with the second heating area,
wherein the heat conduction member includes a pair of heat conduction segments and wherein an interval between the pair of heat conduction segments is less than the width of the first print medium.