Printing : a practical treatise on the art of typography as applied more particularly to the printing of books (1904)
Jacobi, Charles Thomas · London : G. Bell & Sons · leaf 237
FlO. 123. ROLLER MOULD (OPEN). they require constant attention. In cold weather they be-come hard, and in hot weather soft. They should not be too hard or too soft, neither crack norskin on the surface, and there should be some amount of … FlG. 124. ROLLER MOULD (CLOSED). life in them, that is to say, there should be a certainamount of tackiness when manipulated with the hand.Sometimes they are too fresh or new— green being themore familiar technical term; when in this state, theyshould be put aside to mature. Improper treatment in…
