FSC 9310                                                         JCP A63
                          OFFSET BOOK, COLORED
Printing Paper                                          February 1, 1999

Use information: This paragraph is informational only and is not 
    exclusively definitive of the end use.
  For face and back multicolor offset printing of books, pamphlets, 
catalogs, folders, circulars, etc.; light colors suitable for printing 
solid reverses or heavy halftones. Printed matter may include text, line 
illustrations, and halftones up to 150-line screen. Sheets 216 by 356 mm 
(8\1/2\ by 14 inches) or smaller are used principally for reproduction 
by small offset presses at speeds in excess of 2,000 copies per hour.

Stock: Groundwood pulp, not to exceed 1 pct.

    Note: Not less than 30 pct postconsumer fiber. Any percent over 30 
  percentage points, is encouraged, provided that the requirements of 
  this Standard are met.

Grammage (g/m\2\)............................       75       90      105
  Basis weight: 25 by 38 inches, 500 sheets         50       60       70
  A tolerance of 5 pct shall be allowed.

Bursting strength: Average, not less
  than (kPa).................................      110      130      150
  Equivalent (lb/in\2\)......................       16       19       22

Opacity: Average, not less than
  (percent)..................................       90       92       93
  No individual specimen shall average less         88       90       91
   than (percent)............................

Thickness: Average (mm)......................    0.100    0.120    0.140
  Equivalent (inch)..........................   0.0039   0.0047   0.0055

    A tolerance of  0.013 mm (0.0005 inch) shall be allowed. 
  Paper shall be uniform and shall not vary more than 0.011 mm (0.0004 
  inch) from one edge to the other.
General appearance: Paper shall conform to the standard sample(s) 
  adopted by the Government.
  Color: The paper in the order (or publication) shall be uniform. The 
  color variation shall not exceed DE(CIELAB)=1.0.
    For colored stock, paper shall match one of the established 
  standards or as specified. Colors shall not fade or transfer (rub off) 
  and shall appear even and uniform on the surface of the sheet. Stock 
  shall not be 2-sided. Color coordinates for selected standards are 
  included in Part 3.
  Finish and formation: Shall be uniform.
  Cleanliness: The dirt count for each side of the paper shall not 
  exceed 650 specks per square meter. No sample sheet (600 to 650 cm\2\ 
  in size) shall contain more than one defect with an equivalent area of 
  0.25 mm\2\ or greater.
    Note: This property is automatically waived when the ordering agency 
  has specified a stock which includes ``fibers'' or ``specks'' in the 
  surface of the sheet.
Sampling and testing: Shall be conducted in accordance with standards in 
  Part 2, Government Paper Specification Standards.


 Unless otherwise specified, the following is automatically waived when 
  printing or duplicating is to be accomplished on commercial contract
Sizing: Paper shall be surface- and internal-sized suitable for 
  satisfactory printing on both sides of the paper on high-speed offset 
  presses and/or sheet-fed offset presses equipped with continuous flow 
  or brush dampening systems.

Tensile strength: For roll stock only, average, not less than--
  Machine direction (kN/m)...................      3.5      3.8      4.1
  Cross direction (kN/m).....................      1.4      1.6      1.8
  Machine direction (kg/in)..................      9.0      9.7     10.5
  Cross direction (kg/in)....................      3.6      4.1      4.6

Pick resistance: Sheet-fed offset: Average, each side, not less than 13-
  A Dennison wax number for sheet size exceeding 432 by 559 mm (17 by 
  122 inches); 10-A Dennison wax number for sheet sizes 432 by 559 mm 
  (17 by 22 inches) or less.
    Web offset: Average, each side, not less than 11-A Dennison wax 
    No individual specimen shall average less than 11-A, 8-A, and 9-A 
  Dennison wax number, respectively.
Color: Shall match the Government's standard sample for color. A 
  deviation of DE(CIELAB)=2.0 from the color standard is allowed. A 
  color difference 1.0 DE unit between the wire and felt sides is 
Curl: Paper shall lie flat with either no tendency to curl or with a 
  curl which can be overcome under reasonable working conditions.
Surface: Shall be free from lint, fuzz, or any particles which will 
  pick, lift, fluff, or pile on the blanket under normal press 
Size and trim: Sheets: Paper shall be furnished in the size(s) ordered 
  and shall be flat, trimmed square on four sides with clean

  smooth edges, and evenly jogged. A tolerance of  2 mm (\1/
  16\ inch) shall be allowed except for sheets 216 by 356 mm (8\1/2\ by 
  14 inches) or less; then a tolerance of  1 mm (\1/32\ 
  inch) shall be allowed. Successive sheets within any package shall not 
  differ from each other by more than 0.5 mm (\1/64\ inch). Paper with 
  the long dimension 813 mm (32 inches) or less shall be considered 
  square if the variation does not exceed 1 mm (\1/32\ inch); over 
  813 mm (32 inches); 2 mm (\1/16\ inch).
    Rolls: Roll width and diameter shall be as ordered. A tolerance of 
   2 mm (\1/16\ inch) shall be allowed for width and 
   26 mm (1 inch) for diameter.
Roll winding: Roll paper shall be tightly wound at even tension and 
  shall not contain more than the specified maximum number of splices 
  per roll. The number of splices permitted per roll is determined by 
  the roll diameter as ordered. On rolls 1,016 mm (40 inches) or less, a 
  maximum of three splices per roll shall be allowed. On rolls over 
  1,016 mm (40 inches), a maximum of four splices per roll shall be 
  allowed. Splices shall be neatly and securely overlap-pasted and made 
  with a repulpable adhesive which will not permit the splice to 
  separate. The adhesive may be applied from a tape form backing, 
  provided the backing is removed, leaving only the adhesive component 
  on the splice. The adhesive shall not cause the splice to adhere to 
  adjacent laps. The tails of the splices shall be neatly and evenly 
  removed without damage to adjacent laps. Splices shall be flagged at 
  both ends with projecting colored markers, not pasted to the splice, 
  or otherwise clearly marked.
Grain: Direction of the grain on flat paper shall be as ordered.
Pressroom conditions: The bulk of this paper will be used in air-
  conditioned pressrooms maintained at 24  deg.C 2  deg.C 
  and 45 pct 8 pct relative humidity.