December 12, 2016

A Series

In the metric system, series of standard paper sizes based on portions of a square meter. (A square meter is the area used to determine paper grammage, the metric equivalent of basis
December 12, 2016


A standard metric paper size used in Europe that corresponds most closely to the United States standard letter size of 8H x 11 inches. A4-size paper is equal to 21
December 12, 2016


The frictional rubbing of one substance or material against another, frequently causing wear or other damage.
December 12, 2016

Abrasion Resistance

A property of paper referring to the degree to which a paper can maintain its surface and structural integrity under prolonged rubbing, scratching, and scuffing. Abrasion resistance is important not
December 12, 2016


A property of a substance or material that describes the extent to which it will scratch another surface. To guard against abrasive substances, many papers, substrates, and ink films need to
December 12, 2016


In color, a term descriptive of the relation between the light that is absorbed by a surface and the total light striking the surface. The perception of color is possible because
December 12, 2016


A property of any porous material, such as paper, to absorb a fluid, be it ink, water, oil, or other substance. A paper’s degree of ink absorbency varies according to the type
December 12, 2016


Alternate term for absorbance. See Absorbance.
May 23, 2017


The penetration of a fluid into the surface of a solid, as in a paper’s ability to absorb ink, water, etc., which may be more or less desirable depending on
December 12, 2016

Accelerated Aging

A process used to estimate the permanence of paper or other substrate. Depending on a paper’s chemical composition, it can have varying levels of longevity. Since normal aging is not practical, procedures have

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