1901 Apr. 551 A few..were found ready to submit their work to the uncertainties and vagaries of the process-printer.
1911 XXIV. 427/1 Persons engaged in the production of books and other printed matter (including lithographers, copper, steel plate and ‘process’ printers, bookbinders, publishers, booksellers and distributors).
1960 (General Register Office) 88/2 Printer;..process.