Head cap, the fold of leather over the head band (see [Fig. 67]).
Head and tail, the top and bottom of a book.
Imperfections, sheets rejected by the binder and returned to the printer to be replaced.
India proofs, strictly first proofs only of an illustration pulled on “India paper,” but used indiscriminately for all illustrations printed on India paper.
Inset, the portion of a sheet cut off and inserted in folding certain sizes, such as duodecimo, &c. (see [Fig. 4]).
Inside margins, the border made by the turn in of the leather on the inside face of the boards (see [Fig. 116]).
Joints, (1) the groove formed in backing to receive the ends of the mill-boards. (2) The part of the binding that bends when the boards are opened. (3) Strips of leather or cloth used to strengthen the end papers.
“Kettle stitch,” catch stitch formed in sewing at the head and tail.
Lacing in, lacing the slips through holes in the boards to attach them.
Lying press, the term applied to the under side of the cutting press used for backing, usually ungrammatically called “laying press.”