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The diagram at right illustrates a cast metal sort: a face, b body or shank, c point size, 1 shoulder, 2 nick, 3 groove, 4 foot. Wooden printing sorts were used for centuries in combination with metal type. Not shown, and more the concern of the casterman, is the "set", or width of each sort.
The darker blocks are images. The whole bed of type is printed on a single sheet of paper, which is then folded and cut to form many individual pages of a book. The general form of letterpress printing with a platen press shows the relationship between the forme (the type), the pressure, the ink, and the paper.
A locked-up forme for printing a single page Main article: letterpress printing In typesetting , a forme (or form) is imposed by a stoneman working on a flat imposition stone when he assembles the loose components of a page (or number of simultaneously printed pages) into a locked arrangement, inside a chase , ready for printing.
In physical typesetting, a sort or type is a block with a typographic character etched on it, used—when lined up with others—to print text. [1] In movable-type printing, the sort or type is cast from a matrix mold and assembled by hand with other sorts bearing additional characters into lines of type to make up a form, from which a page is printed.
In the example above, a 16-page book is prepared for printing. There are eight pages on the front of the sheet, and the corresponding eight pages on the back. After printing, the paper is folded in half vertically (page two falls against page three). Then it is folded again horizontally (page four meets page five).
In book publishing, casting off is the process of estimating the number of signatures required to typeset a manuscript. [1] An accurate castoff (or cast off) is important because the page length of a book affects many variables, including the cost of producing the book, the cover price, how many books can fit in a carton, and the width of the ...
A stereotype mold ("flong") being made Stereotype casting room of the Seattle Daily Times, c. 1900. In printing, a stereotype, [note 1] stereoplate or simply a stereo, is a solid plate of type metal, cast from a papier-mâché or plaster mould taken from the surface of a forme of type.
A Ludlow Typograph is a hot metal typesetting system used in letterpress printing. The device casts bars, or slugs of type, out of type metal primarily consisting of lead. These slugs are used for the actual printing, and then are melted down and recycled on the spot. It was used to print large-type material such as newspaper headlines or posters.