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Abstract

In an optical printing apparatus with employment of a low-cost arrangement, a high image quality recording operation is realized. The optical printing apparatus is arranged by including: image data input device for inputting image data; image data correcting device for correcting the inputted image data in such a manner that a density fluctuation is deleted in correspondence with elements of a print head; reference level producing device for producing a reference level; comparing device for comparing multi-value data outputted from the image data correcting device with the reference level so as to convert the multi-value data into binary data; data transferring device for transferring the binary data outputted from the comparing device as head data to the print head; latch control device for latching data of the print data; and strobe control device for enabling the print head to expose the light therefrom; whereby the print head is driven in response to the output results of the data transferring device, the latch control device, and the strobe control device to thereby form the gradation image. As a result, this optical printing apparatus is capable of forming an image with uniform density in low cost, and furthermore, can correct fluctuations of the elements of the print head in high precision.

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First Claim