Patent ID: 6803939
Filing Date: 2004-10-12
Classification: B41J,G03B,G03C

Abstract:
An optical printing head of a side-printing device for printing data of a photosensitive material as a latent image on a side margin of said photosensitive material while said photosensitive material is being conveyed in a direction, said optical printing head comprising:a plurality of light emitting elements mounted on a substrate and arranged along a perpendicular direction to the conveying direction of said photosensitive material; a partitioning device mounted on said substrate, for partitioning said light emitting elements from each other, to prevent interference between rays from adjacent ones of said light emitting elements; a diffusion device for diffusing rays from said light emitting elements, to equalize luminance of rays from each light emitting element; and a converging lens system for projecting rays from said light emitting elements onto said photosensitive material, wherein each of said light emitting elements is assigned to record a dot at a time when driven in synchronism with the conveying movement of said photosensitive material, thereby to print said latent image line by line.