Fig. 20.
Fig. 21.—Standing Press
While the end papers are being made, the sections of the book should be pressed. To do this a pressing-board is taken which is a little larger than the book, and a tin, covered with common paper, placed on that, then a few sections of the book, then another tin covered with paper, and then more sections, and so on, taking care that the sections are exactly over one another (see [fig. 20]). A second pressing-board having been placed on the last tin, the pile of sections, tins, and pressing-boards can be put into the standing-press and left under pressure till next day. Newly printed plates should be protected by thin tissue paper while being pressed. Any folded plates or maps, &c., or inserted letters, must either not be pressed, or have tins placed on each side of them to prevent them from indenting the adjoining leaves.
Fig. 22.—French Standing Press
Hand-printed books, such as the publications of the Kelmscott Press, should have very little pressure, or the “impression” of the print and the surface of the paper may be injured. Books newly printed on vellum or heavily coloured illustrations should not be pressed at all, or the print may “set off.”
The protecting tissues on the plates of a book that has been printed for more than a year can generally be left out, unless the titles of the plates are printed on them, as they are a nuisance to readers and often get crumpled up and mark the book.