JCP A100 Antique Book 1 February 1, 2008 Printing Paper FSC 9310 Use Information: This paragraph is informational only and is not exclusively definitive of the end use. For multicolor face and back offset printing of books, pamphlets, folders, brochures, etc. Has a rough, soft finish, particularly good for publications with extensive reading matter. High bulk. Printed matter may include text, illustrations, and halftones up to 150-line screen. Stock: Groundwood pulp not to exceed 1%. Note: Not less than 30% postconsumer fiber. Any percent over 30 percentage points, is encouraged, provided that the requirements of this Standard are met. Acidity: pH value shall average not less than 6.5. Basis weight: 25 by 38 inches, 500 sheets (pounds)…………………. 45 60 70 A tolerance of +5% shall be allowed. Bursting strength: Average not less than (lb/in2) …………………………. 13 18 21 Opacity: Average not less than (percent) ……………………............. 89 91 94 No individual specimen shall average less than (percent) …………. 87 89 93 Thickness: Average (mils) …………. 3.0 5.1 5.9 A tolerance of +0.0005 inch shall be allowed. Paper shall be uniform and shall not vary more than 0.0004 inch from edge to edge. General appearance: Paper shall conform to the standard sample(s) established by the Government. Brightness: Shall target 72% +2% or as specified. Color: The paper in the order (or publication) shall be uniform and the color variation shall not exceed DE(CIELAB) = 1.0. Finish and formation: Shall be uniform. Cleanliness: The dirt count for each side of the paper shall not exceed 250 specks per square meter. No sample sheet (600 to 650 cm2 in size) shall contain more than one defect with equivalent area of 0.25 mm2 or greater. Testing: Shall be conducted in accordance with methods in part 2, Government Paper Specification Standards. The acceptance criteria Part 4 shall apply. __________ 1 This grade is typically not available in less than mill run quantities.