US 2010/0135699 A1 · Exposure Head and Image Forming Apparatus

Abstract

An exposure head includes: a group of light emitting elements in which light emitting elements are arranged in a first direction; a light emitting element substrate in which the group of light emitting elements is arranged in the first direction and in a second direction orthogonal or substantially orthogonal to the first direction; and a driving substrate which drives the light emitting elements arranged on the light emitting element substrate, wherein the driving substrate controls a light emission intensity of a light emitting element that is near to an end side in the first direction of the group of the light emitting elements, among the light emitting elements constituting the group of the light emitting elements, so that the intensity is smaller than the light emission intensity of a light emitting element constituting the group of the light emitting elements different from the above light emitting element, and the light emission intensity becomes smaller towards the end side.

Claims4

Dependent claims

An exposure head comprising:

a group of light emitting elements in which light emitting elements are arranged in a first direction;
a light emitting element substrate in which the group of light emitting elements is arranged in the first direction and in a second direction orthogonal or substantially orthogonal to the first direction;
and
a driving substrate which drives the light emitting elements arranged on the light emitting element substrate,
wherein the driving substrate controls a light emission intensity of a light emitting element that is near to an end side in the first direction of the group of the light emitting elements, among the light emitting elements constituting the group of the light emitting elements, so that the intensity is smaller than the light emission intensity of a light emitting element constituting the group of the light emitting elements different from the above light emitting element, and the light emission intensity becomes smaller towards the end side.

2 more elements

An image forming apparatus comprising:

a latent image carrier on which a latent image is formed;
an exposure head including a first group of light emitting elements in which light emitting elements are arranged in a first direction, a first imaging optical system which images the first group of light emitting elements, a second group of light emitting elements which emit light to form a second latent image which is partly overlapped with the first latent image formed on the latent image carrier by the light from the first group of light emitting elements by the first imaging optical system, and a second group of imaging optical system which images the second group of light emitting elements;
and
a driving control unit which controls an amount of light from the light emitting elements which emit light to be imaged at a position at which the first latent image and the second latent image are overlapped such that its light emission intensity is smaller than that of an amount of light from the light emitting elements which emit light to be imaged at a position at which the first latent image and the second latent image are not overlapped.

1 more element

Dependencies are inferred from the claim text.

Exposure Head and Image Forming Apparatus

Life of this patent

Exposure Head and Image Forming Apparatus

Life of this patent

Abstract

Claims4