(Print.) A frame covered with parchment or cloth, on which the blank sheets are put, in order to be laid on the form to be impressed.
Tympan sheet (Print.), a sheet of paper of the same size as that to be printed, pasted on the tympan, and serving as a guide in laying the sheets evenly for printing.
... moisture; then a roller charged with thick ink is put on, and then another with thin is applied. It takes fully five minutes to sponge and roll up a plate, the rolling being done gently and firmly. A sheet of paper is now laid upon the plate, the tympan is lowered, and the scraper adjusted with due pressure; a revolution of the wheel completes the printing, the well-known scraping action of the lithographic press being used in ... — Scientific American Supplement, No. 362, December 9, 1882 • Various
... these errors with pen and ink is usually considered a paying investment. The tympan of the duplicating machine is sometimes made uneven so that the impression of a typewriter is still further carried out. Some duplicating machines advertise that their type print "loose" for this very ... — Business Correspondence • Anonymous
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