US 12,443,133 B2
Fixing device and image forming apparatus incorporating same with a biasing member assembled into the housing via a resistor
Tomoya Adachi, Kanagawa (JP); and Yuusuke Furuichi, Kanagawa (JP)
Assigned to RICOH COMPANY, LTD., Tokyo (JP)
Appl. No. 18/716,840
Filed by Tomoya Adachi, Kanagawa (JP); and Yuusuke Furuichi, Kanagawa (JP)
PCT Filed Dec. 20, 2022, PCT No. PCT/IB2022/062561
§ 371(c)(1), (2) Date Jun. 7, 2024,
PCT Pub. No. WO2023/144616, PCT Pub. Date Aug. 3, 2023.
Claims priority of application No. 2022-012017 (JP), filed on Jan. 28, 2022.
Prior Publication US 2025/0036053 A1, Jan. 30, 2025
Int. Cl. G03G 15/20 (2006.01)
CPC G03G 15/2053 (2013.01) [G03G 15/2064 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A fixing device comprising:
a rotator;
an opposed rotator opposite the rotator;
a heater including a resistive heat generator, the heater being in direct contact with an inner circumferential surface of the rotator or being in contact with the inner circumferential surface of the rotator via a conductor to heat the rotator;
a conductive housing grounded;
a resistor in the housing;
a conductive separator being in contact with the rotator and assembled into the housing via the resistor, and
a biasing member to bias the separator against the rotator, the biasing member being assembled into the housing via the resistor,
the separator and the housing are disposed at a distance equal to or greater than a creepage distance of 2.5 mm and equal to or greater than an air clearance of 2.2 mm, and
the biasing member and the housing are disposed at a distance equal to or greater than the creepage distance of 2.5 mm and equal to or greater than the air clearance of 2.2 mm.