US 11,796,957 B2
Cleaning blade, cleaning device, process cartridge, and image forming apparatus
Shota Oshima, Kanagawa (JP); and Daisuke Tano, Kanagawa (JP)
Assigned to FUJIFILM Business Innovation Corp., Tokyo (JP)
Filed by FUJIFILM Business Innovation Corp., Tokyo (JP)
Filed on Sep. 9, 2022, as Appl. No. 17/941,136.
Claims priority of application No. 2022-007400 (JP), filed on Jan. 20, 2022.
Prior Publication US 2023/0229106 A1, Jul. 20, 2023
Int. Cl. G03G 21/00 (2006.01); G03G 21/18 (2006.01); C08L 75/04 (2006.01); C08G 18/42 (2006.01)
CPC G03G 21/0017 (2013.01) [C08G 18/4238 (2013.01); C08L 75/04 (2013.01); G03G 21/1814 (2013.01); C08L 2203/20 (2013.01); C08L 2312/00 (2013.01); G03G 2221/0005 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A cleaning blade comprising:
a contact part coming into contact with a member to be cleaned, the contact part being constituted by a member containing polyurethane rubber produced by polymerizing at least a polyol component and a polyisocyanate component,
wherein:
the ratio (M100/Re) of 100% modulus (M100 [MPa]) to rebound resilience coefficient (Re [%]) of the member is 0.25 or more;
the rebound resilience coefficient (Re [%]) of the member is less than 25%; and
the tensile stress at 23° C. and 200% strain of the member is 15 MPa or more.