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US 2024/0201617 A1Published application
Development device having rotatable wiper wiping optical surface of lens
AssigneeHewlett-Packard Development Company, L.P.
InventorsYongnam Ahn, Jongin Kim, Woongyong Choi, Shinhyup Kang
Life of this patent
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Abstract
A developing device includes a housing to accommodate toner, a rotation member installed in the housing, a lens including an optical surface oriented in an axial direction of the rotation member, and a wiper installed in the rotation member and configured to repeatedly wipe the optical surface while the rotation member rotates and supported by the rotation member so as to be movable in the axial direction.
Claims15
A developing device comprising:
- a housing to accommodate toner;
- a rotation member installed in the housing;
- a lens having an optical surface facing an axial direction of the rotation member;
- and
- a wiper installed on the rotation member configured to repeatedly wipe the optical surface while the rotation member rotates, and the wiper is supported by the rotation member so as to be movable in the axial direction.
2 more elements
A developing device comprising:
- a housing in which a developing roller is installed;
- a stirring member configured to supply toner accommodated in the housing to the developing roller;
- a remaining toner level sensor comprising a light emission portion and a light reception portion and installed outside the housing;
- a lens comprising a light emission surface and a light reception surface located within the housing to be arranged apart from each other in an axial direction of the stirring member, the lens to guide light emitted from the light emission portion through the light emission surface and the light reception surface and to the light reception portion;
- and
- a wiper comprising first and second wiping portions symmetrical to each other with oblique surfaces configured to wipe the light emission surface and the light reception surface, respectively, wherein the wiper is supported by the stirring member so as to be movable and tiltable in the axial direction.
3 more elements
Dependencies are inferred from the claim text.