HP LaserJet Printers - Print Media Guide

4 Specications
This appendix provides paper specications.
●
U.S. paper grades
●
Common paper grades and basis weights
●
Weight equivalence table
●
Standard media sizes used in laser printers
●
Comparisons of paper smoothness
U.S. paper grades
The U.S. paper-grading system denes the sizes and weights of dierent grades of paper.
The U.S. paper-grading system has evolved through custom and usage, resulting in similar papers having
dierently stated weights. For example, a 24-lb bond paper is exactly the same weight as a 60-lb book paper, or
a 60-lb text, or a 33-lb cover. This is because basis weight is dened as the weight of 500 sheets of paper cut to
basic size. The basic size for bond, book/text, cover, index, bristol, and tag are all dierent, so the given weights
for these paper grades can be dierent although the physical weight is virtually identical.
Common paper grades and basis weights
This table identies the basis weights for common paper grades. The basic size for each paper grade is unique,
which aects the weight.
Paper grade Basic size Basic area Factor
Equivalent basis weights
(example)
Bond 17 by 22 inches (432 by
559 mm)
374.0 sq. inches (.241
m
2
)
1.00 24-lb bond
Text 25 by 38 inches (635 by
965 mm)
950.0 sq. inches (.613
m
2
)
2.54 61-lb text
Book (coated or
uncoated)
25 by 38 inches (635 by
965 mm)
950.0 sq. inches (.613
m
2
)
2.54 61-lb book
Cover 20 by 26 inches (508 by
660 mm)
520.0 sq. inches (.335
m
2
)
1.39 33-lb cover
Bristol 22.5 by 28.5 inches (571
by 724 mm)
641.25 sq. inches (.414
m
2
)
1.71 41-lb Bristol
ENWW 35