Line head and image forming apparatus using the same
First Claim
Patent Images
1. A line head comprising:
- multiple light emitting element groups each including multiple light emitting elements; and
multiple imaging lenses which are disposed in association with the light emitting element groups, whereink light emitting elements (k is a natural number which is equal to or larger than
2) are arranged at first pitches Δ
e along a first direction in each one of the light emitting element groups, and the light emitting element groups are disposed at second pitches Δ
g along the first direction,each one of the multiple imaging lenses converges light beams from the light emitting elements and forms spots along the first direction on a surface-to-be-scanned which is transported in a second direction, andthe absolute value h of the optical magnification of the imaging lenses, the first pitch AΔ and
the second pitch Δ
g are related to each other so as to satisfy the formula below;
Δ
g−
(k−
1)·
Δ
e·
h<
Δ
e·
h.
0 Assignments
0 Petitions
Accused Products
Abstract
A line head includes multiple light emitting element groups each including multiple light emitting elements. In each light emitting element group, the multiple light emitting elements are disposed in a two-dimensional arrangement so that a distance Gx is greater than a distance Gy. The light emitting element groups are arranged so that pitches Px are greater than pitches Py.
-
Citations
3 Claims
-
1. A line head comprising:
-
multiple light emitting element groups each including multiple light emitting elements; and multiple imaging lenses which are disposed in association with the light emitting element groups, wherein k light emitting elements (k is a natural number which is equal to or larger than
2) are arranged at first pitches Δ
e along a first direction in each one of the light emitting element groups, and the light emitting element groups are disposed at second pitches Δ
g along the first direction,each one of the multiple imaging lenses converges light beams from the light emitting elements and forms spots along the first direction on a surface-to-be-scanned which is transported in a second direction, and the absolute value h of the optical magnification of the imaging lenses, the first pitch AΔ and
the second pitch Δ
g are related to each other so as to satisfy the formula below;
Δ
g−
(k−
1)·
Δ
e·
h<
Δ
e·
h. - View Dependent Claims (2)
-
-
3. An image forming apparatus comprising:
-
a latent image carrier; multiple light emitting element groups each including multiple light emitting elements; and multiple imaging lenses which are disposed in association with the light emitting element groups, wherein k light emitting elements (k is a natural number which is equal to or larger than
2) are arranged at first pitches Δ
e along a first direction in each one of the light emitting element groups, and the light emitting element groups are disposed at second pitches Δ
g along the first direction,each one of the multiple imaging lenses converges light beams from the light emitting elements and forms spots along the first direction on a surface-to-be-scanned which is transported in a second direction, and the absolute value h of the optical magnification of the imaging lenses, the first pitch Δ
e and the second pitch Δ
g are related to each other so as to satisfy the formula below;
Δ
g−
(k−
1)·
Δ
e·
h<
Δ
e·
h.
-
Specification