Process for the Manufacture of Relief Photographs.
Реферат: 27,076. Lachner, K. Nov. 22. Embossing.-In making the relief photographs an embossed representation is first modelled by hand from a photograph in a plastic material. This model is covered with oil, fat, or paraffin, and a gypsum mould made from it. The mould is covered with filter-paper, and a soft or liquid material such as a mixture of pumicestone and glue, which hardens to form a hard permanent backing, is poured on to the covered mould and pressed softly against it as it sets. When hard and set a print of the photograph on paper, silk, or the like is pressed on to the backing by a soft piece of felt pad until it adheres to it. A print on paper is first treated with hot water or steamed in order to loosen its fibres, so that, when it is being mounted, it will yield or relax to the reliefs and hollows of the backing.
Method for the additive production of relief printing plates
Номер патента: US20180304609A1. Автор: Thomas Telser,Eva Freudenthaler. Владелец: Flint Group Germany GmbH. Дата публикации: 2018-10-25.