US 12,265,340 B2
Image-forming apparatus
Takanori Mitani, Kanagawa (JP); Takao Kume, Kanagawa (JP); Satoshi Nishida, Kanagawa (JP); Isamu Takeda, Tokyo (JP); and Kohei Okayasu, Shizuoka (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on May 21, 2024, as Appl. No. 18/670,361.
Application 18/670,361 is a division of application No. 18/156,951, filed on Jan. 19, 2023, granted, now 12,019,380.
Claims priority of application No. 2022-009162 (JP), filed on Jan. 25, 2022.
Prior Publication US 2024/0302768 A1, Sep. 12, 2024
Int. Cl. G03G 15/08 (2006.01); G03G 9/093 (2006.01); G03G 15/01 (2006.01); G03G 15/16 (2006.01)
CPC G03G 15/0808 (2013.01) [G03G 9/09328 (2013.01); G03G 15/0173 (2013.01); G03G 15/161 (2013.01); G03G 2215/00177 (2013.01); G03G 2215/00679 (2013.01)] 9 Claims
OG exemplary drawing
 
1. An image-forming apparatus comprising:
a first image-forming portion including:
a rotatable first image-bearing member; and
a rotatable first developer-bearing member configured to bear a first developer composed of a first toner particle and an organosilicon protrusion formed on a surface of the first toner particle, configured to come into contact with the first image-bearing member and form a first developing portion, and configured to supply the first developer to a surface of the first image-bearing member to form a first developer image in the first developing portion;
a second image-forming portion including:
a rotatable second image-bearing member; and
a rotatable second developer-bearing member configured to bear a second developer containing a second toner particle and no organosilicon protrusion formed on a surface of the second toner particle, configured to come into contact with the second image-bearing member and form a second developing portion, and configured to supply the second developer to a surface of the second image-bearing member to form a second developer image in the second developing portion;
an intermediate transfer member configured to come into contact with the first image-bearing member and form a first contact portion and to come into contact with the second image-bearing member and form a second contact portion, wherein the first developer image is transferred to the intermediate transfer member in the first contact portion, and the second developer image is transferred to the intermediate transfer member in the second contact portion; and
a transfer member configured to come into contact with the intermediate transfer member, form a transfer portion, and transfer the first developer image and the second developer image formed on a surface of the intermediate transfer member to a recording material in the transfer portion,
wherein the surface of the intermediate transfer member is movable,
the first image-forming portion and the second image-forming portion are arranged such that the first contact portion is formed downstream of the transfer portion and upstream of the second contact portion in a movement direction of the surface of the intermediate transfer member.