US 2013/0258024 A1 · Image Forming Apparatus

Abstract

There is provided an image forming apparatus including plural photosensitive members on which developer images are formed by supplying developer to electrostatic latent images, respectively, an exposure device which illuminates light beams onto surfaces of the photosensitive members to form the electrostatic latent images, respectively. The developer images on the respective photosensitive numbers are transferred to a transferred medium which is moved in a moving direction while contacting the respective photosensitive members. The exposure device is configured such that a. beam diameter of light beam exposing a most-upstream photosensitive member in the moving direction on a surface of the most-upstream photosensitive member is larger than a beam diameter of light beam exposing a most-downstream photosensitive member in the moving direction on a surface of the most-downstream photosensitive member.

Claims14

Dependent claims

An image forming apparatus comprising:

a plurality of photosensitive members which are arranged in parallel and on which developer images are formed by supplying developer to electrostatic latent images, respectively;
an exposure device which is configured to illuminate light beams onto surfaces of the photosensitive members to form the electrostatic latent images, respectively,
wherein the developer images on the respective photosensitive members are transferred to a transferred medium which is moved in a moving direction along an arrangement direction of the photosensitive members while contacting the respective photosensitive members, and
wherein the exposure device is configured such that a beam diameter of light beam exposing a most-upstream photosensitive member arranged at a most upstream side in the moving direction on a surface of the most-upstream photosensitive member is larger than a beam diameter of light beam exposing a most-downstream photosensitive member arranged at a most downstream side in the moving direction on a surface of the most-downstream photosensitive member.

1 more element

An image forming apparatus comprising:

a conveyance belt which is configured to convey a sheet;
a plurality of photosensitive drums Which are arranged in parallel to face the conveyance belt and include a first photosensitive drum arranged at a most upstream side in a moving direction of the conveyance belt and a second photosensitive drum arranged at a most downstream side in the moving direction of the conveyance belt;
and
an exposure device which includes a first light source configured to emit light beam to expose the first photosensitive drum and a second light source configured to emit light beam to expose the second photosensitive drum and configured such that a beam diameter of the light beam exposing the first photosensitive drum is larger than a. beam diameter of the light beam exposing the second photosensitive drum.

1 more element

Dependencies are inferred from the claim text.

Image Forming Apparatus

Life of this patent

Image Forming Apparatus

Life of this patent

Abstract

Claims14