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US 2012/0237246 A1Published application
Toner density sensor and image forming apparatus
AssigneeOMRON Corporation
InventorsYoshitaka Taishi, Hajime Kawai
Life of this patent
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Abstract
A toner density sensor has a light emitting unit that emits light to detect toner density, a light receiving unit that receives the light emitted from the light emitting unit and reflected from a detection target, and a board on which the light emitting unit and the light receiving unit are surface-mounted. A penetration space that penetrates the board in a thickness direction is formed in at least one of portions in which the light emitting unit and the light receiving unit are attached to the board.
Claims20
A toner density sensor comprising:
- a light emitting unit that emits light to detect toner density;
- a light receiving unit that receives the light emitted from the light emitting unit and reflected from a detection target;
- and
- a board on which the light emitting unit and the light receiving unit are surface-mounted,
- wherein a penetration space that penetrates the board in a thickness direction is formed in at least one of portions in which the light emitting unit and the light receiving unit are attached to the board.
2 more elements
Dependencies are inferred from the claim text.