GB/T 25250-2010Imaging materials -- Colour images on paper prints -- Determination of indoor water resistance of printed colour images (English PDF)

3.1 Summary

Photos water resistance is divided into three categories, that is 3.2 to 3.4 as defined in the water, moderate water, not water.

3.2 Water

Water resistance refers photo photo exposure is not significantly affected by liquid water or moisture in.

Note. no coloring agent (bleeding, blurred, color change), the support (curled, wrinkled, delamination), image surface (gloss change, hydrosphere) significant degradation.

3.3 Medium water

Moderate water resistance refers photos show some changes or damage caused by water, but is still considered suitable for its intended purpose photo.

Note. damage manifested in the slight curl of the media, some delamination at the edges, or because of changes in gloss or a small amount of colorant ringed watermark caused by the movement.

This damage can be quickly removed to relieve water (be careful dry, shake off water, etc.).

3.4 Not water

The aqueous photos intolerance is through contact with water or water mist and other contacts can be easily damaged and are no longer considered suitable for pictures.

NOTE. Such damage manifested in a perceptible curl, image layer was separated, colorant bleeding to no image area or between different color regions penetration, or FIG.

Like degradation (color, gloss variation, surface stains, etc.). Strongly recommends that users of such material to prevent water exposure.

4.1 General

Water resistance refers to the ability to resist water damage photos, this damage will show in many forms, such as mobile colorant; dimensional change and (or) the optical density of the image elements change; degradation of the picture layer, such as wrinkles, curl or lose their luster. At present, many water resistance test methods. E.g, Inkjet printing photos in many cases after water poured into the image of the surface of the water can not dry quickly detect changes occur. The other situation is that Some print photos soaked in water for several hours without any water damage, but if you wipe before drying it will rub off a layer image section.

Extensive tests have shown a complete description of water requires several different test methods. In laboratories carried out by these methods Various attempts to quantify produce comparable test data, but were not successful (perhaps in a given laboratory tests described in this standard is to charge Sub reproducible credible statistical data. However, this is not enough to be the adoption of evaluation criteria determined). For this reason, the regulation Qualitative analysis of a set of test results. This requires that the test results obtained by different printing materials classified as water class (no change) and not water