Double-sided light sensitive color photographic paper and preparation method thereof

Abstract

The invention relates to double-sided light sensitive color photographic paper and a preparation method thereof. The photographic paper comprises a basic paper layer, and a first light sensitive layer and a second light sensitive layer which are respectively arranged on two opposite sides of the basic paper layer, wherein a silver light blocking layer is arranged between the basic paper layer and the first light sensitive layer and / or between the basic paper layer and the second light sensitive layer. The silver light blocking layer is used for blocking most light rays, so the light rays exposed to a single side do not expose to the light sensitive layer on the other side. Therefore, the other light sensitive layer can be avoided producing undue images which destroy the original image quality. Silver in the silver light blocking layer can be removed in the process of printing photos without affecting the final viewing quality of the photographic paper.

Description

technical field [0001] The present invention relates to a photosensitive photographic paper, in particular to a color photographic paper that can be photosensitive on both sides to form an image, and a manufacturing method of the photographic paper. Background technique [0002] Traditionally, the photo paper used for printing photos is a single-sided photosensitive photo paper that can only be exposed on one side. The photo paper is exposed and imaged on one side and then placed in a picture frame or album for one-sided viewing, which affects the scope of use of the photo paper. [0003] Recently, color photographic paper that can be photosensitive on both sides has been proposed, such as the utility model patent of China Patent Publication No. CN2807300Y, refer to figure 1 As shown, the photographic paper 10 includes a paper base 11, a first photosensitive layer 12 and a first protective layer 13 disposed on one side of the paper base 11, and a second photosensitive layer ...

AI Technical Summary

Problems solved by technology

However, when double-sided photosensitive photo paper is subjected to two single-sided photosensitive or double-sided simultaneous photosensitive, the light exposed to one side will affect the other side, thereby reducing the image quality.

Although the paper base 11 has a partial light-blocking effect, it still cannot avoid a considerable part of the light projection

refer to figure 2 As shown, when only the photosensitive layer 12 on one side is exposed to light, part of the exposure light L1 will pass through the paper base 11 and irradiate to the photosensitive layer 14 on the other side, thereby making the photosensitive layer 14 on the other side partially sensitive to light and affecting its Subsequent image quality

Conversely, when the photosensitive layer 14 is exposed to light, it will also affect the photosensitive layer 12.

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