December 12, 2016

Recovered Fiber

Fibrous paper source that has been made into paper in the past and is undergoing repulping, for use in recycled paper(in contrast to virgin fiber). See Recycled Paper.
December 12, 2016


In imaging, the ratio of the total amount of light striking a surface to the amount of light that is reflected from that surface. The calculation of reflectance is part
December 12, 2016

Reflectance Model 

Function which describes light on a surface by making assumptions concerning light sources, angles and surface texture. Also called illumination model.
December 12, 2016


The bouncing of light rays off of a surface. In optics, the law of reflection holds that the angle at which a light ray is reflected will be equal to
December 12, 2016


The degree to which successively-printed colors (or images) are accurately positioned with respect to each other. Accurate register ensures that a final printed piece has the effect of a “single image,”
December 12, 2016

Register Block 

An adjustable metal plate attached to the side of the feedboard of a sheetfed printing press used in tandem with aside guide to properly position a sheet of paper before it is tranferred
December 12, 2016

Register Marks 

Small designs, shapes, or other patterns (most commonly a circle or oval with a cross through it) placed in non-image areas of negatives, positives, color separations, and plates to ensure
December 12, 2016


The extent to which successively-printed colors or images are positioned on the final print, with respect to each other or to their position on the original copy. See Register.
December 12, 2016

Registration Mark 

See Register Marks.
December 12, 2016

Relative Humidity

A measure of the amount of water vapor present in the air expressed as a percentage of the total amount of water vapor the air could hold at the same

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