US 12,265,341 B2
Developing cartridge with a bent blade holder of a doctor blade element
Liangchun Tang, Zhuhai (CN); Jinbo Lv, Zhuhai (CN); and Hongfang Liu, Zhuhai (CN)
Assigned to ZHUHAI YUANCHENG DIGITAL TECHNOLOGY CO., LTD., Zhuhai (CN)
Appl. No. 18/275,415
Filed by ZHUHAI YUANCHENG DIGITAL TECHNOLOGY CO., LTD., Zhuhai (CN)
PCT Filed Dec. 7, 2021, PCT No. PCT/CN2021/136203
§ 371(c)(1), (2) Date Aug. 2, 2023,
PCT Pub. No. WO2022/166372, PCT Pub. Date Aug. 11, 2022.
Claims priority of application No. 202120310346.7 (CN), filed on Feb. 3, 2021; application No. 202120310347.1 (CN), filed on Feb. 3, 2021; and application No. 202120727785.8 (CN), filed on Apr. 9, 2021.
Prior Publication US 2024/0036494 A1, Feb. 1, 2024
Int. Cl. G03G 15/08 (2006.01); G03G 15/00 (2006.01); G03G 21/18 (2006.01)
CPC G03G 15/0812 (2013.01) [G03G 15/757 (2013.01); G03G 21/1814 (2013.01); G03G 21/1857 (2013.01); G03G 21/186 (2013.01); G03G 2215/0866 (2013.01); G03G 2215/0872 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A developing cartridge, comprising:
a housing for accommodating toner,
a developing roller rotatably mounted in the housing,
a doctor blade element in contact with the developing roller, and
a driving device located at a longitudinal end of the housing;
wherein the driving device comprises a driving force input member and a developing roller gear, wherein the developing roller gear is located at an end of the developing roller; the driving force input member comprises a driving force receiving part and a first driving gear combined with the driving force receiving part, wherein a diameter of the first driving gear is larger than a diameter of the driving force receiving part, and the first driving gear is meshed with the developing roller gear; the doctor blade element is in contact with an outer surface of the developing roller to adjust a thickness of a toner layer on the outer surface of the developing roller; the doctor blade element comprises a blade holder and a blade, wherein the blade holder and the blade are combined; the blade holder is fixedly mounted on the housing, and the blade holder comprises a first part and a second part, wherein blade holder is bent between the first part and the second part such that a bent part of the blade holder is formed between the first part and the second part, and the blade is fixed on the second part; the blade is abutted against the outer surface of the developing roller; and when viewed along a longitudinal direction of the developing cartridge, the driving force receiving part does not overlap with the blade and the bent part, and the first driving gear overlaps with the first part of the blade holder.