Exposure head, image forming apparatus, and image forming method
AssigneeSeiko Epson Corporation
InventorsNozomu Inoue, Yoshio Arai, Kiyoshi Tsujino
Life of this patent
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Abstract
An exposure head includes a light emitting segment that emits light; an electrical load that is electrically connected to a circuit in which a current to be supplied to the light emitting segment flows; and a current supply controller that supplies a first current to the light emitting segment to cause the light emitting segment to emit light and supplies a second current to the electrical load during the time when the current supply controller blocks the supply of the first current to the light emitting segment.
Claims8
An exposure head comprising:
- a light emitting segment that emits light;
- an electrical load that is electrically connected to a circuit in which a current to be supplied to the light emitting segment flows;
- and
- a current supply controller that supplies a first current to the light emitting segment to cause the light emitting segment to emit light and supplies a second current to the electrical load during the time when the current supply controller blocks the supply of the first current to the light emitting segment.
An image forming apparatus comprising:
- a latent image carrier on which a latent image is formed;
- an exposure head having a light emitting segment that emits light, an electrical load that is electrically connected to a circuit in which a current to be supplied to the light emitting segment flows, and an optical system that focuses the light emitted by the light emitting segment onto the latent image carrier;
- and
- a current supply controller that supplies a first current to the light emitting segment to cause the light emitting segment to emit light and supplies a second current to the electrical load during the time when the current supply controller blocks the supply of the first current to the light emitting segment.
An image forming method comprising:
- supplying a first current to a light emitting segment to cause the light emitting segment to emit light and exposing a latent carrier to the light emitted by the light emitting segment;
- and
- blocking the supply of the first current to the light emitting segment and supplying a second current to an electrical load that is electrically connected to a circuit in which the first current to be supplied to the light emitting segment flows.
Dependencies are inferred from the claim text.