FSC 9310                                                         JCP A55
                        HEAT-SET WEB OFFSET BOOK
Printing Paper                                          February 1, 1999
------------------------------------------------------------------------

Use information: This paragraph is informational only and is not 
    exclusively definitive of the end use.
  For simultaneous face and back, web offset printing of books, 
pamphlets, catalogs, folders, circulars, etc., the 75 g/m\2\ or heavier 
papers, may be used for solid reverses or heavy halftones. Printed 
matter may include text, line illustrations and halftones up to 150-line 
screen. Slitting and pasting and/or cross perforating are included in 
press capabilities.
  
Stock: Groundwood pulp, not to exceed 1 pct. The total lignin content of 
  the paper shall not exceed 3 pct of the fiber weight.

    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.

Acidity: pH value shall average not less than 6.5.

Grammage (g/m\2\)....................     60     75     90    105    120
  Basis weight: 25 by 38 inches, 500      40     50     60     70     80
   sheets (pounds)...................
  A tolerance of 5 pct shall be allowed.

Bursting strength: Average, not less
  than (kPa).........................     90    100    120    150    170
  Equivalent (lb/in\2\)..............     13     15     18     22     25

Opacity: Average, not less than
  (percent)..........................     86     89     91     92     94
  No individual specimen shall            84     87     89     90     92
   average less than (percent).......

Thickness: Average (mm) ...........................................    0.075    0.100    0.120    0.140    0.160
  Equivalent (inch)................................................   0.0030   0.0039   0.0047   0.0055   0.0063

    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 with a 
  target brightness of 81 pct. 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 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.
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 heat-
  set web offset presses equipped with continuous flow or brush 
  dampening systems.

Tensile strength: Average, not less than--
  Machine direction (kN/m)...........    2.5    3.5    3.8    4.1    4.5
  Cross direction (kN/m).............    1.2    1.4    1.6    1.8    2.0

    Equivalent--

  Machine direction (kg/in)..........    6.4    9.0    9.7   10.5   11.5
  Cross direction (kg/in)............    3.1    3.6    4.1    4.6    5.1

Color: Shall match the Government's standard sample for color. A 
  deviation of DE(CIELAB)=0.5 from the color standard is allowed.
    For information only, the CIELAB values (Ill D65, 10 deg. observer) 
  of the color standard are

      L*=93.3
      a*=1.0
      b*=-2.0

Pick resistance: Average, each side, not less than 10-A Dennison wax 
  number.

    No individual specimen shall average less than 8-A Dennison wax 
  number.
Surface: Shall be free from lint, fuzz, or any particles which will 
  pick, lift, fluff, or pile on the blanket under normal press 
  conditions.
Size and trim: 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 while passing through a drying oven maintained at 200  deg.C. 
  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.
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.