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US 8,552,342 B2Granted
Heater and image heating apparatus including the same
AssigneeCanon Kabushiki Kaisha
InventorHiroyuki Sakakibara
Life of this patent
Estimating the term…
Abstract
To provide a heater that can reduce fixing failure in a paper passing area while suppressing a temperature rise in a sheet non-passing area, and a fixing apparatus including the heater. Resistors are connected in parallel between two conductive patterns that are provided on a heater substrate along the longitudinal direction of the substrate, and resistors are arranged so that the shortest current path of each of the resistors can overlap the shortest current path of an adjacent resistor in the longitudinal direction of the substrate.
Claims12
A heater comprising:
- a substrate;
- a first conductor provided on the substrate along a longitudinal direction of the substrate;
- a second conductor provided on the substrate along the longitudinal direction of the substrate at a position different from a position of the first conductor in a lateral direction of the substrate;
- and
- a plurality of heat generating resistors connected between the first conductor and the second conductor,
- wherein the plurality of heat generating resistors are connected in parallel between the first conductor and the second conductor, and a shortest current path of each resistor overlaps a shortest current path of an adjacent heat generating resistor in the longitudinal direction of the substrate.
3 more elements
A heater comprising:
- a substrate;
- a first conductor provided on the substrate along a longitudinal direction of the substrate;
- a second conductor provided on the substrate along the longitudinal direction of the substrate at a position different from a position of the first conductor in a lateral direction of the substrate;
- and
- a plurality of heat generating resistors connected between the first conductor and the second conductor,
- wherein a plurality of rows of blocks each having the plurality of heat generating resistors connected in parallel between the first conductor and the second conductor are provided at different positions in the lateral direction of the substrate, and a shortest current path of each heat generating resistor in one of the rows of blocks in the lateral direction overlaps a shortest current path of each heat generating resistor in another row of blocks in the longitudinal direction.
3 more elements
Dependencies are inferred from the claim text.