US 12,013,652 B2
Heating device, fixing device, and image forming apparatus including a rotator holder and reflector
Daisuke Inoue, Tokyo (JP); Takayuki Andoh, Kanagawa (JP); Masahiro Samei, Kanagawa (JP); Kota Shiodera, Tokyo (JP); and Hiroshi Yoshinaga, Chiba (JP)
Assigned to Ricoh Company, Ltd., Tokyo (JP)
Filed by Daisuke Inoue, Tokyo (JP); Takayuki Andoh, Kanagawa (JP); Masahiro Samei, Kanagawa (JP); Kota Shiodera, Tokyo (JP); and Hiroshi Yoshinaga, Chiba (JP)
Filed on Jan. 26, 2023, as Appl. No. 18/160,080.
Claims priority of application No. 2022-042528 (JP), filed on Mar. 17, 2022; and application No. 2022-185659 (JP), filed on Nov. 21, 2022.
Prior Publication US 2023/0297010 A1, Sep. 21, 2023
Int. Cl. G03G 15/20 (2006.01); H05B 3/00 (2006.01)
CPC G03G 15/2017 (2013.01) [G03G 15/2025 (2013.01); G03G 15/2053 (2013.01); H05B 3/0066 (2013.01); G03G 2215/2035 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A heating device, comprising:
a rotator rotatably held;
a heating source configured to heat the rotator;
a reflector configured to reflect radiant heat emitted from the heating source;
a shield disposed closer to a longitudinal end portion of the rotator than to a longitudinal center portion of the rotator to shield, between the heating source and the rotator, the radiant heat emitted from the heating source,
the shield having a reflectance lower than a reflectance of the reflector;
a rotator holder holding the longitudinal end portion of the rotator; and
a liquid or semi-solid substance having lubricity and adhering to the rotator holder,
wherein the rotator holder has a reflectance lower than the reflectance of the reflector;
wherein the reflectance of the shield is lower than the reflectance of the rotator holder, and
wherein the reflectance of the shield and the reflectance of the rotator holder have a difference of not less than 10%.