COLOR OF PAPER AND PAPERBOARD IN CIE Y; X, Y, OR Y, DOMINANT WAVELENGTH AND EXCITATION PURITY

• This method specifies a procedure for measuring the color of paper or paperboard with tristimulus filter colorimeters or spectrophotometers incorporating diffuse/0 geometry and CIE (International Commission on Illumination) illuminant C.
• The color appearance of paper and paperboard is important for its aesthetic value in marketing packaged products, as an aid to distribution of multi-ply forms; to differentiate pages or sections of published literature, in artwork, and in many other applications.
• Specific calibration standards, colored similar to the paper to be tested, may be used to minimize the effect of spectral and geometric differences between instruments whose results are being compared.
• The calibration of photometric scales shall be carefully checked at reasonable time intervals in a manner to insure linearity and accuracy over all ranges.

It Provides information on:

• Standards
• Calibration
• Calculations