US 2001/0048460 A1 · Method of and apparatus for recording image by exposure to light beams

Abstract

Two-dimensional image data is divided into two-dimensional image data of numbers of main scanning lines depending on intervals between laser beams. While effective signals are high in level, the divided two-dimensional image data simultaneously start being outputted as effective image data. While effective signals are low in level, the two-dimensional image data are made ineffective. In this manner, recording ranges covered by the laser beams are adjusted to record a two-dimensional image. A high-quality two-dimensional image can thus be recorded at a high speed in a desired recording position on a photosensitive medium by exposure to light beams with an inexpensive arrangement without the need for a highly accurate adjusting process and a highly accurate adjusting mechanism.

Claims8

Dependent claims

A method of recording a two-dimensional image on a photosensitive medium by exposure to light beams which are emitted from a plurality of light sources arrayed in an auxiliary scanning direction and applied to scan the photosensitive medium in a main scanning direction and the auxiliary scanning direction, comprising the steps of:

dividing the two-dimensional image into a plurality of two-dimensional images in the auxiliary scanning direction;
setting the numbers of main scanning lines to be recorded or not to be recorded for the two-dimensional images with the light sources, depending on intervals in the auxiliary scanning direction on the photosensitive medium between the light beams emitted from adjacent ones of the light sources;
and
simultaneously starting or ending to record the two-dimensional images according to the set numbers of scanning lines.

1 more element

An apparatus for recording a two-dimensional image on a photosensitive medium by exposure to light beams which are emitted from a plurality of light sources arrayed in an auxiliary scanning direction and applied to scan the photosensitive medium in a main scanning direction and the auxiliary scanning direction, comprising:

line number setting means for setting the numbers of main scanning lines to be recorded or not to be recorded for the two-dimensional images with the light sources, depending on intervals in the auxiliary scanning direction on the photosensitive medium between the light beams emitted from adjacent ones of the light sources;
an image divider for dividing the two-dimensional image into a plurality of two-dimensional images in the auxiliary scanning direction, based on the numbers of main scanning lines to be recorded;
image storage means for storing the divided two-dimensional images for the respective light sources;
and
light source driving means for energizing said light sources based on said two-dimensional images;
the arrangement being such that the two-dimensional images are read from said image storage means and supplied to said light source driving means at times based on the numbers of main scanning lines to be recorded or not to be recorded.

3 more elements

Dependencies are inferred from the claim text.

Method of and apparatus for recording image by exposure to light beams

Life of this patent

Method of and apparatus for recording image by exposure to light beams

Life of this patent

Abstract

Claims8