Numerical and terminological description of paper contrast: numbers 0 -1 soft; number 2 normal; number 3 hard; numbers 4 very hard. (see Contrast grade paper & Multigrade)
Is a numerical terminological description of paper contrast: numbers 0-1 soft; numbers 2 normal; number 3 hard; number 4-5 very hard; number 6 ultra hard. Similar grade number from different manufactures do not have the same characteristics.
Papers manufactured to fit within a group or type of papers. Each grade of paper uses basically the same fiber, color, additive and chemical composition.
A measure of the roughness of the abrasive paper. For example, a grade of 80 would be very course, while 600 or 800 grade of paper would be very fine. Grades range from 40 (production paper) or 80 wet or dry, up to 1500 superfine grade.
Grades of paper range from 1-5. One is the highest quality and is rarely used except in annual reports. Not all types of paper come in all grades. For example, a coated groundwood stock is only grades 4 and 5 because of the groundwood component. [Back