US Patent Issued to Hewlett-Packard Development on Jan. 20 for "Developing and fur-brush type rollers of cartridge" (South Korean Inventors)

ALEXANDRIA, Va., Jan. 20 -- United States Patent no. 12,529,978, issued on Jan. 20, was assigned to Hewlett-Packard Development Co. LP (Spring, Texas).

"Developing and fur-brush type rollers of cartridge" was invented by Taehyun Kim (Seongnam Si, South Korea), Yunhyung Bae (Seongnam Si, South Korea), Ara Kim (Seongnam Si, South Korea), Youngphil Ji (Seongnam Si, South Korea) and Yongsang Ryu (Seongnam Si, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "A cartridge to contain a developer includes a developing roller to carry the developer and a fur-brush type supplying roller to form a nip region with the developing roller to supply the developer to the developing roller. A surface layer of the dev...