PURPOSE: To generate the duplication subjected to screen processing of an image by using variable intensity beam.

CONSTITUTION: An apparatus for generating the duplication subjected to screen processing of an image by using a plotter equipped with beam of variable intensity is equipped with a means 10 for providing the expression of the original picture containing data showing the input density value of the image a means 12 for storing data and a recording means 26 exposing a recording medium to record the duplication subjected to screen processing of the image. The recording means 26 uses the data stored in a screen memory and data showing the input density value of the image to non-arithmetically determine whether laser is operated and the intensity degree operating the laser so as to expose the recording medium at a given place.