US 12,282,273 B2
Development device having rotatable wiper wiping optical surface of lens
Yongnam Ahn, Seongnam-si (KR); Jongin Kim, Seongnam-si (KR); Woongyong Choi, Seongnam-si (KR); and Shinhyup Kang, Seongnam-si (KR)
Assigned to Hewlett-Packard Development Company, L.P., Spring, TX (US)
Appl. No. 18/556,028
Filed by Hewlett-Packard Development Company, L.P., Spring, TX (US)
PCT Filed Aug. 31, 2021, PCT No. PCT/US2021/071315
§ 371(c)(1), (2) Date Oct. 18, 2023,
PCT Pub. No. WO2022/235306, PCT Pub. Date Nov. 10, 2022.
Claims priority of application No. 10-2021-0058098 (KR), filed on May 4, 2021.
Prior Publication US 2024/0201617 A1, Jun. 20, 2024
Int. Cl. G03G 15/08 (2006.01)
CPC G03G 15/0896 (2013.01) [G03G 15/0862 (2013.01); G03G 15/0889 (2013.01); G03G 2215/0891 (2013.01)] 15 Claims
OG exemplary drawing
 
1. 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.