JCP A95 Hi-bulk Offset (Return Mailer) February 1, 2008 

Printing Paper FSC 9310 

 

Use Information: This paragraph is informational only and is not exclusively definitive of the end use. 

For face and back offset printing of returned mailers. Printed mater may include text, line illustrations, and halftones up to 
150-line screen and reverses. Grade complies with U.S. Postal Service minimum caliper requirement for return mailers. 

 

 

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. 

 

Basis weight: 25 by 38 inches, 500 sheets 
(pounds) ………….……………………………… 75 

A tolerance of +10% shall be allowed. 

 

Bursting strength: Average, not less than 

(lb/in2) ……………………………………………. 19 

 

Opacity: Average, not less than (percent) ………. 91 
No individual specimen shall average less 

than (percent) ……………………………………. 89 

 

 

 

 

Thickness: Average not less than (mils) …… 7.0 

Note: Any deviation in this requirement is sufficient cause 
for rejection of the paper. 

 

Porosity: Average, not to exceed (seconds) …. 25 

 

General appearance: Paper shall conform to the standard 
sample(s) established by the Government. 

Brightness: Shall target 79% 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 650 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.