Chassis structure, optical scanning device, and image forming apparatus

Patent metadata

Field	Value
Publication number	US-2016147193-A1
Application number	US-201514923614-A
Country	US
Kind code	A1
Filing date	Oct 27, 2015
Priority date	Nov 20, 2014
Publication date	May 26, 2016
Grant date	—

Abstract

A chassis structure includes: a chassis that houses a component used for an image forming apparatus inside and that includes an opening; a cover member that covers the opening of the chassis; and a seal member that is provided between the cover member and the chassis and that, when the cover member is attached to the chassis, is compressed and deformed so as to seal a gap between the cover member and the chassis. An attached section of the cover member to which the seal member is attached is provided with a hole.

First claim

What is claimed is:

1 . A chassis structure comprising:
a chassis that houses a component used for an image forming apparatus inside and that includes an opening; a cover member that covers the opening of the chassis; and a seal member that is provided between the cover member and the chassis and that, when the cover member is attached to the chassis, is compressed and deformed so as to seal a gap between the cover member and the chassis, wherein an attached section of the cover member to which the seal member is attached is provided with a hole.

2 . The chassis structure according to claim 1 , wherein
the cover member includes
a bottom section;
an outer wall section that rises from an outer circumference of the bottom section; and
an inner wall section that is provided inside the outer wall section, and
the attached section of the cover member is a section that is surrounded by the bottom section, the outer wall section, and the inner wall section.

3 . The chassis structure according to claim 2 , wherein the hole is provided on the bottom section between the outer wall section and the inner wall section.

4 . The chassis structure according to claim 2 , wherein the hole has a shape that protrudes in a thickness direction of the bottom section and in a direction that is opposite to a direction in which the outer wall section exists.

5 . The chassis structure according to claim 2 , wherein the outer wall section and/or the inner wall section has a guiding shape that enables the cover member to be guided to a predetermined position of the chassis.

6 . The chassis structure according to claim 2 , wherein a molding height of the seal member that is in contact with the outer wall section of the cover member is greater than a gap between the chassis and the cover member in a thickness direction of the bottom section.

7 . The chassis structure according to claim 2 , wherein a molding height of the seal member that is in contact with the inner wall section of the cover member is greater than a gap between the chassis and the cover member in a thickness direction of the bottom section.

8 . The chassis structure according to claim 1 , wherein the seal member is a viscoelastic member.

9 . The chassis structure according to claim 1 , wherein the hole includes multiple holes.

10 . The chassis structure according to claim 1 , wherein the cover member includes at least one cover member.

11 . An optical scanning device comprising:
a light source; a deflecting unit that deflects a light flux in a main-scanning direction for scanning, the light flux being emitted from the light source; and a plurality of optical elements that guides the light flux to a scanned surface, the light flux being deflected by the deflecting unit, wherein the light source, the deflecting unit, and the optical elements are housed in a chassis, and the chassis structure according to claim 1 is used.

12 . The optical scanning device according to claim 11 , wherein the light source includes at least one luminous point.

13 . The optical scanning device according to claim 11 , wherein the light source is a surface-emitting laser.

14 . An image forming apparatus comprising the chassis structure according to claim 1 .

15 . The image forming apparatus according to claim 14 , wherein the image forming apparatus forms a raster image.

Assignees

• Yoshida Daisuke
• Yamakawa Takashi
• Ricoh Co Ltd

Inventors

• Yoshida Daisuke
• Yamakawa Takashi

Classifications

• H04N1/0607

  Scanning a concave surface, e.g. with internal drum type scanners (H04N1/0657 takes precedence) · CPC title

• G03G15/04036

  Details of illuminating systems, e.g. lamps, reflectors (lamp housings for copying cameras, reflex exposure lighting G03B27/542) · CPC title

• H04N1/00559

  Mounting or support of components or elements (H04N1/00538 takes precedence) · CPC title

• G02B26/12

  using multifaceted mirrors · CPC title

• G03G21/1666

  for the exposure unit · CPC title