Light scanning apparatus
AssigneeCanon Kabushiki Kaisha
InventorsTakehiro Ishidate, Genichiro Kudo
Life of this patent
Estimating the term…
Abstract
A light scanning apparatus, including: a light source configured to emit a light beam; and a rotary polygon mirror configured to deflect the light beam emitted from the light source so that the light beam scans a surface of a photosensitive member, wherein the rotary polygon mirror is formed in a four-sided polygon, and wherein a difference between a pair of diametrically opposed interior angles of the rotary polygon mirror is larger than 0.03°, and a difference between another pair of diametrically opposed interior angles of the rotary polygon mirror is 0.03° or less.
Claims6
A light scanning apparatus, comprising:
- a light source configured to emit a light beam;
- and
- a rotary polygon mirror configured to deflect the light beam emitted from the light source so that the light beam scans a surface of a photosensitive member,
- wherein the rotary polygon mirror is formed in a six-sided polygon, and
- wherein a difference between a pair of diametrically opposed interior angles of the rotary polygon mirror is larger than 0.03°, and a difference between one interior angle adjacent to one of the pair of diametrically opposed interior angles and another of the pair of diametrically opposed interior angles is larger than 0.03°.
An image forming apparatus, comprising:
- a photosensitive member;
- a light scanning apparatus including:
- a light source configured to emit a light beam;
- and
- a rotary polygon mirror configured to deflect the light beam emitted from the light source so that the light beam scans a surface of the photosensitive member,
- wherein the rotary polygon mirror is formed in a six-sided polygon, and
- wherein a difference between a pair of diametrically opposed interior angles of the rotary polygon mirror is larger than 0.03°, and a difference between one interior angle adjacent to one of the pair of diametrically opposed interior angles and another of the pair of diametrically opposed interior angles is larger than 0.03°;
- a developing unit configured to develop an electrostatic latent image, which is formed on the surface of the photosensitive member by the light beam scanning on the photosensitive member, with use of toner;
- and
- a transfer unit configured to transfer a toner image developed by the developing unit onto a recording medium.
Dependencies are inferred from the claim text.