Heating device and fixing device and image forming apparatus
AssigneesKabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
InventorsChie Miyauchi, Osamu Takagi, Kazuhiko Kikuchi
Life of this patent
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Abstract
A heating device according to an embodiment generally includes substrate, blocks, and temperature sensors. The blocks are arranged on the substrate with a gap therebetween in a first direction. The temperature sensors are provided for each of the blocks and detect the temperature of the blocks. The block includes a plurality of first blocks on at least one side in the first direction, and the first block is adjacent to two blocks in the first direction, and the temperature sensor detects temperature of a temperature detection region on the first block, which is closer to the one of the adjacent two blocks being longer in the first direction of the two blocks.
Claims20
A heating device, comprising:
- a substrate;
- a plurality of blocks that are arranged on the substrate with a gap therebetween in a first direction and that generate heat;
- and
- a plurality of temperature sensors that are provided for each of the blocks and detect the temperature of the blocks, wherein
- the blocks include a plurality of first blocks on at least one side in the first direction, and each first block is adjacent to two blocks in the first direction, and the temperature sensors for each first block detects a temperature of a temperature detection region on the respective first block, the temperature detection region being closer to the one of the adjacent two blocks that is a longer one of the two adjacent blocks in the first direction.
A fixing device for fixing an image onto a sheet, the fixing device comprising:
- an endless rotational belt;
- a heating member including a substrate, a plurality of blocks that are arranged on the substrate with a gap therebetween in a first direction and that generate heat, the heating member being provided on an inner side of the endless rotational belt;
- and
- a plurality of temperature sensors that are provided for each of the blocks and detect the temperature of the blocks,
- a pressure roller configured to face the heating member via the endless rotational belt and to form a nip with the endless rotational belt, wherein
- the blocks include a plurality of first blocks on at least one side in the first direction, and each first block is adjacent to two blocks in the first direction, and the temperature sensors for each first block detects a temperature of a temperature detection region on the respective first block, the temperature detection region being closer to the one of the adjacent two blocks being that is a longer one of the two adjacent blocks in the first direction.
An image forming apparatus, comprising:
- a fixing device, the fixing device comprising:
- an endless rotational belt;
- a heating member including a substrate, a plurality of blocks that are arranged on the substrate with a gap therebetween in a first direction and that generate heat, the heating member being provided on an inner side of the endless rotational belt;
- and
- a plurality of temperature sensors that are provided for each of the blocks and detect the temperature of the blocks,
- a pressure roller configured to face the heating member via the endless rotational belt and to form a nip with the endless rotational belt, the fixing device being configured to fix an image onto a sheet, wherein
- the blocks include a plurality of first blocks on at least one side in the first direction, and each first block is adjacent to two blocks in the first direction, and the temperature sensors for each first block detects a temperature of a temperature detection region on the respective first block, the temperature detection region being closer to the one of the adjacent two blocks that is a longer one of the two adjacent blocks in the first direction.
Dependencies are inferred from the claim text.