US 11,754,949 B2
Imaging system with a developing chamber having a developer roller and multiple air passages
Satoshi Muramatsu, Kanagawa (JP)
Assigned to Hewlett-Packard Development Company, L.P., Spring, TX (US)
Appl. No. 17/778,471
Filed by HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P., Spring, TX (US)
PCT Filed Oct. 19, 2020, PCT No. PCT/US2020/056290
§ 371(c)(1), (2) Date May 20, 2022,
PCT Pub. No. WO2021/108041, PCT Pub. Date Jun. 3, 2021.
Claims priority of application No. 2019-215329 (JP), filed on Nov. 28, 2019.
Prior Publication US 2022/0413417 A1, Dec. 29, 2022
Int. Cl. G03G 15/08 (2006.01); G03G 15/09 (2006.01); G03G 21/20 (2006.01)
CPC G03G 15/0891 (2013.01) [G03G 15/0889 (2013.01); G03G 15/0893 (2013.01); G03G 15/0898 (2013.01); G03G 15/0921 (2013.01); G03G 21/206 (2013.01); G03G 15/0896 (2013.01); G03G 2215/085 (2013.01); G03G 2215/0838 (2013.01); G03G 2221/1645 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An imaging system comprising:
a housing including a developing chamber, a first conveyance path adjacent the developing chamber, and a second conveyance path adjacent the first conveyance path;
a developing roller located in the developing chamber, the developing roller to rotate in a rotational direction in order to carry a developer to a developing region where the developing roller is closest to an image carrier in order to develop a latent image formed on the image carrier;
a developer regulator located on an upstream side of the developing region in the rotational direction of the developing roller to limit a thickness of the developer carried by the developing roller;
a first stirring-conveying portion disposed in the first conveyance path to supply the developer to the developing roller;
a second stirring-conveying portion disposed in the second conveyance path to circulate the developer between the first conveyance path and the second conveyance path;
a first air passage having an inlet coupled to the developing chamber on an upstream side of the developer regulator in the rotational direction of the developing roller, and an outlet coupled to the second conveyance path; and
a second air passage having an inlet coupled to the second conveyance path, and an outlet coupled to a region adjacent the developing roller between the developer regulator and the developing region.