FSC 9310                                                         JCP L23
                              OFFSET COVER
Cover Paper                                             February 1, 1999
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Use information: This paragraph is informational only and is not 
    exclusively definitive of the end use.
  For high quality multicolor face and back offset printing of 
brochures, programs, covers for books, periodicals, etc. Printed matter 
may include text, line illustrations, halftones up to 150-line screen, 
and solid reverses.

Unless the option below is specified, the following `basic' 
    specification applies.
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\).......................................     135     175
  Basis weight: 20 by 26 inches, 500 sheets (pounds)....      50      65
  A tolerance of <plus-minus>5 pct shall be allowed.

Bursting strength: Average, not less than
  (kPa).................................................     210     270
  Equivalent (lb/in\2\).................................      31      40

Tearing strength: Average, each direction, not
  less than (mN)........................................     980   1,290
  Equivalent (grams)....................................     100     130

Opacity: Average, not less than (percent)...............      94      95

  No individual specimen shall average less than
   (percent)............................................      92      93


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.

    Note: This property is automatically waived when the ordering agency 
  has specified a stock which includes ``fibers'' of ``specks'' in the 
  surface of the sheet.

Sampling and testing: Shall be conducted in accordance with standards in 
  Part 2, Government Paper Specification Standards.
OPTION
 Option A: Alkaline paper. This option is for products requiring above 
                            average permanence.

  The following requirements replace the same in the `basic' 
specification and are added to the specification.

Stock: 100 pct bleached chemical woodpulp.

    Note: Postconsumer fiber, in any percentage, is encouraged, provided 
  that the requirements of this Standard are met.
Acidity: pH value by cold extraction shall be not less than 7.0. The 
  paper shall contain not less than 2 pct calcium carbonate.
    Any deviation in this requirement shall be sufficient cause for 
  rejection of the paper.

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 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 equipped with continuous flow or brush dampening systems.
Color: Shall match the Government's standard sample for color. A 
  deviation of DE(CIELAB)=3.0 from the color standard is allowed.
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 particle which will pick, 
  lift, fluff, or pile on the blanket under normal press conditions.
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 <plus-minus>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 <plus-minus>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 inch) 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).
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 <plus-minus>2  deg.C 
  and 45 pct <plus-minus>8 pct relative humidity.