公开(公告)号：US09846388B2

公开(公告)日：2017-12-19

申请号：US15446312

申请日：2017-03-01

Applicant: KYOCERA Document Solutions Inc.

Inventor： Koji Suenami ,  Yukihiro Mori

IPC: G03G15/08 ,  G03G15/09

CPC classification number: G03G15/0889 ,  G03G15/0808 ,  G03G15/0812 ,  G03G15/09

Abstract: A developing device includes a storage portion, a developer carrying member, a stirring portion, a layer thickness restricting portion, and a guide portion. The guide portion is disposed between the stirring portion and the layer thickness restricting portion. The stirring portion faces the developer carrying member with a first gap between them. The layer thickness restricting portion faces the developer carrying member with a second gap between them. The guide portion includes a first guide surface and a second guide surface. On the first guide surface, convex portions or concave portions are formed. The first guide surface faces the stirring portion with, between them, a third gap that is a passage through which the developer passes toward the first gap. The second guide surface faces the developer carrying member with, between them, a fourth gap that is a passage through which the developer passes toward the second gap.

公开(公告)号：US09835979B2

公开(公告)日：2017-12-05

申请号：US15229860

申请日：2016-08-05

Applicant: KYOCERA Document Solutions Inc.

Inventor： Koji Suenami

IPC: G03G15/08

CPC classification number: G03G15/0893 ,  G03G2215/083 ,  G03G2215/0833

Abstract: A developing device includes a developing container, a first stirring member, a second stirring member, and a developer discharge port. The developing container has a first and a second transport chamber. The first stirring member has a rotary shaft and a first helical blade. The second stirring member has a rotary shaft and a second helical blade. Through the developer discharge port, surplus developer inside the developing container is discharged. On the second stirring member, a restricting portion for restricting movement of developer toward the developer discharge port is formed downstream of the second helical blade. The restricting portion has two or more turns of a restricting blade wound in the direction opposite to the second helical blade, and the restricting blade has an increasingly large outside diameter from upstream to downstream with respect to the developer transport direction inside the second transport chamber.

公开(公告)号：US20170255128A1

公开(公告)日：2017-09-07

申请号：US15446312

申请日：2017-03-01

Applicant: KYOCERA Document Solutions Inc.

Inventor： Koji Suenami ,  Yukihiro Mori

IPC: G03G15/08 ,  G03G15/09

CPC classification number: G03G15/0889 ,  G03G15/0808 ,  G03G15/0812 ,  G03G15/09

Abstract: A developing device includes a storage portion, a developer carrying member, a stirring portion, a layer thickness restricting portion, and a guide portion. The guide portion is disposed between the stirring portion and the layer thickness restricting portion. The stirring portion faces the developer carrying member with a first gap between them. The layer thickness restricting portion faces the developer carrying member with a second gap between them. The guide portion includes a first guide surface and a second guide surface. On the first guide surface, convex portions or concave portions are formed. The first guide surface faces the stirring portion with, between them, a third gap that is a passage through which the developer passes toward the first gap. The second guide surface faces the developer carrying member with, between them, a fourth gap that is a passage through which the developer passes toward the second gap.