A radiographic, medical or other black, white image of multiplication by thermal, digital half tone laser printing

摘要

Continuous tone black and white images are duplicated using laser thermal digital halftone printing. A continuous tone black and white image signal is provided by a source such as a medical imaging source. The image signal is screened with a digital halftone screen, such that each pixel of said image signal is represented by a predetermined matrix of micropixels, whereby to produce a digital halftone image signal corresponding to the continuous tone black and white image signal. A master is created by printing the digital halftone image onto a dye ablated medium by means of laser thermal recording. A duplicate of the master is produced by contact printing onto a duplicating medium.