US 9,316,992 B2Granted

Light scanning apparatus and image forming apparatus

AssigneeCanon Kabushiki Kaisha

InventorsTakehiro Ishidate, Yasuaki Otoguro

Life of this patent

Estimating the term…

Loading patent…

Abstract

A light scanning apparatus including: an optical box configured to hold a light source and contain a deflecting device configured to deflect a light beam to scan the photosensitive member; and an electric wire bundle electrically connected to the deflecting device, the electric wire bundle being laid in a space between an outer wall and an inner wall of the box, wherein the electric wire bundle extends over the inner wall from the inside of the inner wall, is laid in the space, and extends over the outer wall from the space to the outside of the box, and a portion at which the bundle extends over the outer wall is provided closer to an opening portion of an image forming apparatus than a portion at which the bundle extends over the inner wall when the light scanning apparatus is mounted to a mounting portion of the image forming apparatus.

Claims14

Dependent claims

A light scanning apparatus to be mounted to a mounting portion of an image forming apparatus through an opening portion of the image forming apparatus including a photosensitive member, the light scanning apparatus comprising:

a light source configured to emit a light beam;
a deflecting device configured to deflect the light beam emitted from the light source so as to scan the photosensitive member with the light beam;
an optical box including an outer wall and an inner wall extending inside the outer wall and along the outer wall so as to face the outer wall, and configured to hold the light source and contain the deflecting device inside the inner wall;
and
electric wires electrically connected to the deflecting device,
wherein the optical box includes a space in which the electric wires are laid being formed between the outer all and the inner wall,
wherein the electric wires cross over the inner wall, from a space on an inner side of the inner wall so as to be laid in the space formed between the outer wall and the inner wall, and cross over the outer wall from the space formed between the outer wall and the inner wall so as to lead to a space on an outer side of the optical box, and
wherein the electric wires are laid in the optical box so that, in a state in which the light scanning apparatus is mounted to the mounting portion of the image forming apparatus, a portion at which the electric wires cross over the outer wall are provided closer to the opening portion of the image forming apparatus than a portion at which the electric wires cross over the inner wall.

5 more elements

An image forming apparatus comprising:

a main body provided with an entrance portion disposed on a side of the main body which is different from a front side and a back side of the main body, and the main body further provided with a mounting portion to place a light scanning apparatus, wherein the entrance portion is configured to pass the light scanning apparatus from the outside of the main body toward the mounting portion;
a first photosensitive member;
a second photosensitive member;
the light scanning apparatus which is configured to scan a surface of the first photosensitive member with a first light beam and configured to scan a surface of the second photosensitive member with a second light beam, the light scanning apparatus comprising:
a first light source configured to emit the first light beam;
a second light source configured to emit the second light beam;
a deflecting device configured to deflect the first light beam and the second light beam so that the first light beam scans the first photosensitive member and the second light beam scans the second photosensitive member, the deflecting device deflecting the first light beam and the second light beam toward opposite sides with the deflecting device being interposed therebetween;
an optical box including an outer wall and an inner wall inside the outer wall and along the outer wall so as to face the outer wall;
electric wires electrically connected to the deflecting device,
wherein the optical box includes a space in which the electric wires are laid being formed between the outer wall and the inner wall,
wherein the electric wires cross over the inner wall at a first portion from inside of the inner wall to the space, and cross over the outer wall at a second portion from the space to outside of the outer wall,
wherein the electric wires are laid in the optical box so that the second portion is located closer to the entrance portion than the first portion,
wherein the first light source and the second light source are located closer to the back side of the main body than the deflecting device, and
wherein the first portion is located closer to the front side of the main body than the deflecting device.

11 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/602,912Filed 22 Jan 2015
Priority: JP 2014-01556630 Jan 2014
Published: US 2015/0212477 A130 Jul 2015
Granted: 19 Apr 2016
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

G03G 15/80
Apparatus for electrographic processes using a charge pattern: details relating to power supplies, circuits boards, electrical connections
G03G 15/04036
For exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material: details of illuminating…
G03G 21/1652
For connecting the different parts of the apparatus: electrical connection means
G03G 21/1666
Means for handling parts of the apparatus in the apparatus: for the exposure unit