The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10429786 B1

Date of Patent:

Oct. 01, 2019

Filed:

Jul. 12, 2018

Drive transmission device and image forming apparatus incorporating the drive transmission device

Applicants:

Kenji Tomita, Tokyo, JP;

Junpei Kamichi, Tokyo, JP;

Hiroaki Nieda, Kanagawa, JP;

Kimihiro Tanaka, Kanagawa, JP;

Hideto Higaki, Kanagawa, JP;

Yuuki Shiga, Kanagawa, JP;

Jumpei Aoyama, Kanagawa, JP;

Hirofumi Horita, Kanagawa, JP;

Inventors:

Kenji Tomita, Tokyo, JP;

Junpei Kamichi, Tokyo, JP;

Hiroaki Nieda, Kanagawa, JP;

Kimihiro Tanaka, Kanagawa, JP;

Hideto Higaki, Kanagawa, JP;

Yuuki Shiga, Kanagawa, JP;

Jumpei Aoyama, Kanagawa, JP;

Hirofumi Horita, Kanagawa, JP;

Assignee:

RICOH COMPANY, LTD., Tokyo, JP;

Attorney:

Harness, Dickey & Pierce, P.L.C.

Primary Examiner:

Hoan H Tran

Int. Cl.

CPC ...

G03G 15/00 (2006.01); G03G 15/20 (2006.01); F16H 53/02 (2006.01); G03G 21/16 (2006.01); G03G 15/16 (2006.01);

U.S. Cl.

CPC ...

G03G 15/2064 (2013.01); F16H 53/025 (2013.01); G03G 15/1615 (2013.01); G03G 15/2032 (2013.01); G03G 15/2053 (2013.01); G03G 21/1685 (2013.01);

Abstract

A drive transmission device, which is included in an image forming apparatus, includes a drive transmission body to which a drive force is applied from a driving source, and a rotary shaft having a press-in portion mounted on one end thereof in the axial direction. The press-in portion has multiple planes disposed parallel to an axial direction and configured to receive the drive transmission body. The multiple planes include upstream and downstream side planes disposed downstream from the upstream side plane in a press-in direction of the drive transmission body. The upstream and downstream side planes are aligned along the press-in direction of the drive transmission body and have respective distances different from each other from an axial center of the rotary shaft. A distance from the downstream side plane to the axial center is greater than a distance from the upstream side plane to the axial center.

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