Heater, heating device, fixing device, and image forming apparatus
AssigneeRicoh Company, Ltd.
InventorTomoya Adachi
Life of this patent
Estimating the term…
Abstract
A heater includes a base, a resistor pattern, and a circuit breaker. The resistor pattern includes a plurality of rows of resistors extending in a longitudinal direction of the base. The plurality of rows of resistors are spaced away from each other in a short-side direction orthogonal to the longitudinal direction of the base, coupled in parallel, and configured to generate heat by energization. The circuit breaker is disposed across the plurality of rows of resistors in the short-side direction and configured to cut off power supply to the resistor pattern when a temperature of any one of the plurality of rows of resistors reaches a high temperature threshold.
Claims13
A heater comprising:
- a base;
- a resistor pattern including a plurality of rows of resistors extending in a longitudinal direction of the base, the plurality of rows of resistors being spaced away from each other in a short-side direction orthogonal to the longitudinal direction of the base, being coupled in parallel, and being configured to generate heat by energization;
- and a circuit breaker centered in the short-side direction among the plurality of rows of resistors and having a width greater than that of the plurality of rows of resistors in the short-side direction such that the circuit breaker is disposed across the plurality of rows of resistors in the short-side direction and configured to cut off power supply to the resistor pattern when a temperature of any one of the plurality of rows of resistors reaches a high temperature threshold.
Dependencies are inferred from the claim text.