US 12,292,706 B2
Image forming apparatus and image forming method
Kenta Shingu, Kanagawa (JP); Yoshiteru Yamada, Kanagawa (JP); Yuka Kawamoto, 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 Feb. 7, 2024, as Appl. No. 18/435,704.
Claims priority of application No. 2023-128181 (JP), filed on Aug. 4, 2023.
Prior Publication US 2025/0044724 A1, Feb. 6, 2025
Int. Cl. G03G 15/16 (2006.01)
CPC G03G 15/161 (2013.01) [G03G 15/162 (2013.01); G03G 2215/1661 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An image forming apparatus comprising,
an image holder;
a charging unit that charges a surface of the image holder;
an electrostatic charge image forming unit that forms an electrostatic charge image on the charged surface of the image holder;
a developing unit that accommodates an electrostatic charge image developer containing a toner having toner particles and that develops an electrostatic charge image formed on the surface of the image holder as a toner image by the electrostatic charge image developer, in which a release agent present in a region within 800 nm from a surface of the toner particles is 70% or more of a release agent in entire toner particles and a melting temperature of the release agent is 65° C. or higher and 80° C. or lower;
a transfer unit that has a transfer opposing belt which comes into contact with a surface of a recording medium on an opposite side to a surface to which the toner image is transferred and that transfers the toner image formed on the surface of the image holder to the surface of the recording medium; and
a cleaning device having a cleaning blade that is brought into contact with and cleans an outer peripheral surface of the transfer opposing belt, that is constituted of a polyurethane resin, and that has an indentation elastic modulus of 15 MPa or more and 35 MPa or less on a surface which is brought into contact with the transfer opposing belt, in which a total amount of F and Si present within 200 nm from the surface which is brought into contact with the transfer opposing belt accounts for 75% or more of a total amount of F and Si present within 5 μm from the surface.