US 12,135,520 B2
Belt cleaning blade, photoreceptor cleaning blade, image forming apparatus, transfer device, and cleaning device
Yusuke Watanabe, Kanagawa (JP); Daisuke Tano, Kanagawa (JP); Yoshiro Yamashita, Kanagawa (JP); and Kenta Shingu, Kanagawa (JP)
Assigned to FUJIFILM Business Innovation Corp., Tokyo (JP)
Filed by FUJIFILM BUSINESS INNOVATION CORP., Tokyo (JP)
Filed on Jul. 18, 2023, as Appl. No. 18/354,301.
Claims priority of application No. 2022-125775 (JP), filed on Aug. 5, 2022; and application No. 2023-050634 (JP), filed on Mar. 27, 2023.
Prior Publication US 2024/0053701 A1, Feb. 15, 2024
Int. Cl. G03G 21/00 (2006.01); G03G 15/16 (2006.01)
CPC G03G 21/0017 (2013.01) [G03G 15/161 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A belt cleaning blade comprising:
a contact site that comes into contact with at least a surface of a belt which is a member to be cleaned,
wherein the contact site is configured with polyurethane rubber including hard segments and soft segments, and
in a cross section of the contact site, a ratio X of domains of the hard segments to a total area of the cross section is 14.9% or more and 25.1% or less, and a ratio Y of an area of domains of the hard segments having an area of 200 nm2 or more and 1,000 nm2 or less to a total area of the domains of the hard segments in the cross section is 17.8% or more and 46.5% or less.