Patent ID: 6545696
Filing Date: 2003-04-08
Classification: H04N

Abstract:
An optical printing apparatus for selectively exposing a photosensitive recording medium to light emitted from a print head to thereby form a gradation image, comprising:image data input means for inputting image data; image data correcting means for correcting said inputted image data in such a manner that a density fluctuation of said print head is deleted; reference level producing means for producing a reference level; comparing means for comparing multi-value data outputted from said image data correcting means with said reference level so as to convert said multi-value data into binary data; data transferring means for transferring said binary data outputted from said comparing means as head data to said print head; latch control means for latching data of said print head; and strobe control means for enabling said print head to expose the light therefrom; whereby said print head is driven in response to the output results of said data transferring means, said latch control means, and said strobe control means to thereby form the gradation image.