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TAPPI T 480 Gloss (75°)

Standard:

TAPPI

Method:

TAPPI T 480

Title:

Specular gloss of paper and paperboard at 75 degrees

Scope

The TAPPI T 480 is for measuring the specular gloss of paper at 75° (15° from the plane of paper). Although its chief application is to coated papers, it is also used for a variety of uncoated papers. This method is suitable for low- to high-gloss papers. For very high-gloss papers such as cast-coated, lacquered, highly varnished or waxed papers, and high-gloss ink films, TAPPI T 653 “Specular Gloss of Paper and Paperboard at 20 Degrees” is preferred. T 480 has been shown to be suitable for gloss measurements of most ink films on paper or paperboard. Differences in the color and diffuse reflectances of these ink films have a negligible effect on measured gloss. For example, when white and black surfaces which are otherwise identical are tested, the white surface will measure less than one gloss unit higher than the black. This method does not measure image-reflecting quality.

Significance

This method is widely used as a partial measure of the surface quality and shiny appearance of coated paper.

 

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IPS cannot sell or otherwise provide standards, specifications, or test procedures to third parties.