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US 9,163,999 B2Granted
Temperature sensor, fixing device, and image forming apparatus
AssigneeFuji Xerox Co., Ltd.
InventorsYuki Kubota, Yasutaka Goto
Life of this patent
Estimating the term…
Abstract
A temperature sensor includes a front surface; a back surface; a first temperature-sensitive element and a second temperature-sensitive element disposed side by side between the front surface and the back surface; an infrared-ray absorber; and a heat-transfer inhibitor. When the temperature sensor is exposed to infrared rays that have propagated from both of a front-surface side and a back-surface side of the temperature sensor, the infrared absorber heats up by absorbing the infrared rays and transfers heat to the first temperature-sensitive element and the heat-transfer inhibiter inhibits heat transfer to the second temperature-sensitive element caused by the infrared rays.
Claims9
A temperature sensor, comprising:
- a front surface;
- a back surface;
- a first temperature-sensitive element and a second temperature-sensitive element disposed side by side between the front surface and the back surface;
- an infrared-ray absorber;
- and
- a heat-transfer inhibitor,
- wherein, when the temperature sensor is exposed to infrared rays that have propagated from both of a front-surface side and a back-surface side, the infrared absorber heats up by absorbing the infrared rays and transfers heat to the first temperature-sensitive element and the heat-transfer inhibitor inhibits heat transfer to the second temperature-sensitive element caused by the infrared rays,
- wherein the infrared-ray absorber is a substrate on which the first temperature-sensitive element and the second temperature-sensitive element are mounted, and
- wherein the heat-transfer inhibitor includes infrared-ray reflectors disposed at a front-surface side and a back-surface side of the second temperature-sensitive element.
6 more elements
A temperature sensor, comprising:
- a front surface;
- a back surface;
- a first temperature-sensitive element and a second temperature-sensitive element disposed side by side between the front surface and the back surface;
- an infrared-ray absorber;
- and
- a heat-transfer inhibitor,
- wherein, when the temperature sensor is exposed to infrared rays that have propagated from both of a front-surface side and a back-surface side, the infrared absorber heats up by absorbing the infrared rays and transfers heat to the first temperature-sensitive element and the heat-transfer inhibitor inhibits heat transfer to the second temperature-sensitive element caused by the infrared rays,
- wherein the infrared-ray absorber is a substrate on which the first temperature-sensitive element and the second temperature-sensitive element are mounted, and
- wherein the heat-transfer inhibitor includes an infrared-ray reflector and an infrared-ray shield having (1) a thickness of substantially 0.5 mm or larger or (2) a heat radiating portion, the infrared-ray reflector is disposed at one of a front-surface side and a back-surface side of the second temperature-sensitive element, and the infrared-ray shield is disposed at the other side of the second temperature-sensitive element.
6 more elements
A temperature sensor, comprising:
- a front surface;
- a back surface;
- a first temperature-sensitive element and a second temperature-sensitive element disposed side by side between the front surface and the back surface;
- an infrared-ray absorber;
- and
- a heat-transfer inhibitor,
- wherein, when the temperature sensor is exposed to infrared rays that have propagated from both of a front-surface side and a back-surface side, the infrared absorber heats up by absorbing the infrared rays and transfers heat to the first temperature-sensitive element and the heat-transfer inhibitor inhibits heat transfer to the second temperature-sensitive element caused by the infrared rays,
- wherein the infrared-ray absorber is a substrate on which the first temperature-sensitive element and the second temperature-sensitive element are mounted, and
- wherein the heat-transfer inhibitor includes a first infrared-ray reflector, an infrared-ray shield, and a second infrared-ray reflector, the first infrared-ray reflector is disposed at one of a front-surface side and a back-surface side of the second temperature-sensitive element, the infrared-ray shield is disposed at the other side of the second temperature-sensitive element, and the second infrared-ray reflector is disposed at a second-temperature-sensitive-element side of the infrared-ray shield.
6 more elements
Dependencies are inferred from the claim text.