US 12,078,945 B2
Temperature measuring device of fusing device and image forming apparatus
Shinji Yamana, Sakai (JP)
Assigned to SHARP KABUSHIKI KAISHA, Sakai (JP)
Filed by SHARP KABUSHIKI KAISHA, Sakai (JP)
Filed on Aug. 17, 2022, as Appl. No. 17/890,187.
Claims priority of application No. 2021-139125 (JP), filed on Aug. 27, 2021.
Prior Publication US 2023/0077657 A1, Mar. 16, 2023
Int. Cl. G03G 15/20 (2006.01); G03G 15/00 (2006.01); G03G 21/20 (2006.01)
CPC G03G 15/2039 (2013.01) [G03G 15/2064 (2013.01); G03G 15/5045 (2013.01); G03G 21/206 (2013.01); G03G 2215/2032 (2013.01)] 7 Claims
OG exemplary drawing
 
1. An image forming apparatus comprising:
a fusing device housed in a fusing device cover having an opening portion; and
a temperature measuring device including a thermopile sensor that measures a temperature of the fusing device through the opening portion, the thermopile sensor being disposed outside the fusing device, wherein
the thermopile sensor is held by a sensor holding member,
the sensor holding member includes a cylindrical member extending in front of the thermopile sensor and an aperture disposed at an end of the cylindrical member, and
an opening of the aperture is smaller than the opening portion, and is located on straight lines joining an outer edge of the opening portion and the thermopile sensor.