US 11,841,651 B2
Endless belt, belt unit, and image forming apparatus
Yusuke Watanabe, Kanagawa (JP); Satoya Sugiura, Kanagawa (JP); Kenta Shingu, Kanagawa (JP); Toshiyasu Yukawa, Kanagawa (JP); and Minoru Rokutan, Kanagawa (JP)
Assigned to FUJIFILM Business Innovation Corp., Tokyo (JP)
Filed by FUJIFILM Business Innovation Corp., Tokyo (JP)
Filed on Jan. 10, 2023, as Appl. No. 18/152,159.
Claims priority of application No. 2022-013008 (JP), filed on Jan. 31, 2022.
Prior Publication US 2023/0244160 A1, Aug. 3, 2023
Int. Cl. G03G 15/16 (2006.01); F16G 1/06 (2006.01); G03G 15/20 (2006.01); G03G 15/01 (2006.01)
CPC G03G 15/162 (2013.01) [F16G 1/06 (2013.01); G03G 15/0131 (2013.01); G03G 15/1605 (2013.01); G03G 15/206 (2013.01); G03G 15/2053 (2013.01); G03G 15/2057 (2013.01); G03G 2215/00139 (2013.01); G03G 2215/1623 (2013.01); G03G 2215/2009 (2013.01); G03G 2215/2016 (2013.01); G03G 2221/1615 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An endless belt comprising:
a base material layer containing a polymer material and conductive particles,
wherein, in an image obtained by observing a cross section taken along a thickness direction of the base material layer with an atomic force microscope, a proportion of a total area Ap of cross sections of all the conductive particles is 9.0% or more and 14.5% or less with respect to a total cross-sectional area At of the base material layer, and a proportion of a total area Ab of cross sections of conductive particles having an area of 0.01 μm2 or more among cross sections of the conductive particles is 28.0% or more and 65.0% or less with respect to the total area Ap of cross sections of all the conductive particles.