Tesaurus d'Art i Arquitectura Getty Institute 0000-00-00 2024-01-24 15:40:44 en ditto machines300423533Ditto machineditto machinespirit duplicatorspirit duplicators Spirit duplicators that employ a manual printing method devised in 1923 involving a 2-ply master sheet as a plate. One layer of the master may be typed or drawn on, and the second layer is coated with wax and colorant. Marks made to the first sheet are transferred to its rear, coated side. The sheet with the transferred wax image is then attached to a drum on the machine that revolves over paper, gradually transferring the wax onto a paper support by means of a solvent. Approximately 40 copies or prints can be made in this way. ditto machine (traducció pendent) ditto machines (traducció pendent) 2026-03-30 20:44:42