Print Density and Ink Requirement
Ink requirement is defined as the amount of ink needed to print a unit area with a standard Solid Ink Density. For newsprint, the ISO 12647-3 specification is C 0.90, M 0.90, Y 0.90 and K 1.10, Status E, D50, 2o, density minus paper with Polarization filter. Ink requirement is measured as g/m2 (grams of ink required to print 1 m2 of paper)
Different paper substrates require different amount of ink to achieve the standard SID. A highly porous substrate generally requires higher amount of ink compared to a less porous substrate. Therefore, to study the ink mileage of different paper substrates, this test can be done on all the newsprint samples.
Ink requirement also depends upon the ink formulation and the colour strength of the pigments. From this test, the ink mileage of all the four process colours, when printed in the same paper, can be studied.
Read more about this topic: Paper And Ink Testing
Famous quotes containing the words print, ink and/or requirement:
“Summer set lip to earth’s bosom bare
And left the flushed print in a poppy there.”
—Francis Thompson (1859–1907)
“Traveling takes the ink out of one’s pen as well as the cash out of one’s purse.”
—Herman Melville (1819–1891)
“The first requirement of politics is not intellect or stamina but patience. Politics is a very long run game and the tortoise will usually beat the hare.”
—John Major (b. 1943)