れんりょう, きろれんりょう, きんりょう【連量, キロ連量, 斤量】
the weight (now usually in kilograms) of 1000 sheets of paper cut to a basic size
■ These terms are used in a Japanese system of expressing the weight of paper that is similar to the US basis weight system, but the Japanese system is based on 1000 sheets of paper and expressed in kilograms.
□ 連 is paper industry jargon for 1000 sheets of paper (except for cardstock, for which 1連 is 100 sheets). 連量 expresses the weight of each 連 of paper and is now usually measured in kilograms (also called キロ連量). It is sometimes referred to as 斤量, due to an old and now abolished custom of measuring paper in units of 斤 (about 600 grams).
Although 連量 is used as an indication of the thickness of paper, the same 連量 does not necessarily mean the same thickness, as it may be based on any of several different basic sizes, such as 四六判 (しろくばん; 788 x 1091 mm -- most commonly used basic size), A列本判 (エーれつほんばん; 625 x 880 mm) and 菊判 (きくばん; 939 x 636 mm).
連量 is often rendered as "ream weight", but, as a concept, 連量 is closer to basis weights used in the US in that it expresses the weight based on a basic paper size, not the actual weight of a ream of paper cut to size.
See also 坪量.
This entry was created by Yuno Hanlon.