Two-dimensional surface emitting laser array, two-dimensional surface emitting laser beam scanner, two-dimensional surface emitting laser beam recorder, and two-dimensional surface emitting laser beam recording method
First Claim
Patent Images
1. A two-dimensional surface emitting laser array comprising:
- a substrate;
a first laser array having a plurality of lasers placed in a first spacing along a first base line extending in a main scanning direction on said substrate; and
at least a second laser array having a plurality of lasers placed along at least a second base line having a second spacing with the first base line in the sub scanning direction and extending in parallel with the first base line on said substrate, whereinthe lasers of said first laser array and the lasers of at least said second laser array are placed at different positions in the main scanning direction along the first base line and at least the second base line so as to form an array of pixels equally spaced from each other and with no gap in the main scanning direction.
1 Assignment
0 Petitions
Accused Products
Abstract
A plurality of lasers (having openings 170) are formed at predetermined positions at equal intervals on at least two main scanning lines on a semiconductor substrate 100. The lasers have each a predetermined beam diameter and take different positions in the main scanning direction, thereby providing a two-dimensional surface emitting laser array emitting laser beams through a lens system to form a pixel line with no gap on the main scanning line of an image formation face moving in the sub-scanning direction. The two-dimensional surface emission laser array is used to provide a laser beam scanner, a laser beam recorder, and a laser beam recording method.
-
Citations
16 Claims
-
1. A two-dimensional surface emitting laser array comprising:
-
a substrate; a first laser array having a plurality of lasers placed in a first spacing along a first base line extending in a main scanning direction on said substrate; and at least a second laser array having a plurality of lasers placed along at least a second base line having a second spacing with the first base line in the sub scanning direction and extending in parallel with the first base line on said substrate, wherein the lasers of said first laser array and the lasers of at least said second laser array are placed at different positions in the main scanning direction along the first base line and at least the second base line so as to form an array of pixels equally spaced from each other and with no gap in the main scanning direction. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A two-dimensional surface emitting laser array comprising:
-
a substrate; a first laser array having a plurality of lasers placed in a first spacing along a first base line on said substrate; and at least a second laser array having a plurality of lasers placed along a plurality of inclined lines crossing the first base line at a predetermined angle on the substrate, wherein the lasers of said first laser array and the lasers of at least said second laser array are placed so as to form an array of pixels equally spaced from each other and with no gap in the direction of the first base line.
-
-
8. A two-dimensional surface emitting laser beam scanner comprising:
-
a substrate; a two-dimensional surface emitting laser array having a plurality of lasers placed two-dimensionally on said substrate, the two-dimensional surface emitting laser array comprising a first laser array having a plurality of lasers placed in a first spacing along a first base line extending in the main scanning direction on said substrate, and at least a second laser array having a plurality of lasers placed along at least a second base line having a second spacing with the first base line in the sub scanning direction and extending in parallel with the first base line on said substrate, and wherein the lasers of said first laser array and the lasers of at least said second laser array are placed at different positions in the main scanning direction along the first base line and at least the second base line so as to form an array of pixels equally spaced from each other and with no gap in the main scanning direction; a lens system being placed on the emission side of said two-dimensional surface emitting laser array and having a diameter for receiving all laser light emitted from the lasers; and means for driving the lasers of said two-dimensional surface emitting laser array in response to a specified scanning pattern. - View Dependent Claims (9, 10)
-
-
11. A two-dimensional surface emitting laser beam recorder comprising:
-
a substrate; a two-dimensional surface emitting laser array having a plurality of lasers placed two-dimensionally on said substrate, the two-dimensional surface emitting laser array comprising a first laser array having a plurality of lasers placed in a first spacing along a first base line extending in the main scanning direction on said substrate, and at least a second laser array having a plurality of lasers placed along at least a second base line having a second spacing with the first base line in the sub scanning direction and extending in parallel with the first base line on said substrate, and wherein the lasers of said first laser array and the lasers of at least said second laser array are placed at different positions in the main scanning direction along the first base line and at least the second base line so as to form an array of pixels equally spaced from each other and with no gap in the main scanning direction; a lens system being placed on the emission side of said two-dimensional surface emitting laser array and having a diameter for receiving all laser light emitted from the lasers; means for driving the lasers of said two-dimensional surface emitting laser array in response to a specified scanning pattern; a photosensitive body rotating at a predetermined speed in the sub scanning direction and being exposed to the laser light passed through said lens system for forming an electrostatic latent image; and means for developing the electrostatic latent image formed on said photosensitive body. - View Dependent Claims (12, 13)
-
-
14. A two-dimensional surface emitting laser beam recording method comprising the steps of:
-
preparing a two-dimensional surface emitting laser array having a plurality of lasers placed two-dimensional on a substrate, the two-dimensional surface emitting laser array comprising a first laser array having a plurality of lasers placed in a first spacing along a first base line extending in the main scanning direction on said substrate, and at least a second laser array having a plurality of lasers place along at least a second base line having a second spacing with the first base line in the sub scanning direction and extending in parallel with the first base line on said substrate, and wherein the lasers of said first laser array and the lasers of at least said second laser array are placed at different positions in the main scanning direction along the first base line and at least the second base line so as to form an array of pixels equally spaced from each other and with no gap in the main scanning direction; driving the lasers of said two-dimensional surface emitting laser array in response to a specified scanning pattern for emitting laser light from the laser; exposing a photosensitive body to the laser light through a lens system having a diameter for receiving all laser light emitted from the lasers for forming an electrostatic latent image on the photosensitive body in response to an exposure pattern; and developing the electrostatic latent image for preparing a visible image. - View Dependent Claims (15, 16)
-
Specification