7530-99-300-1893

Diffusion Transfer Process Copying Paper Set

7530993001893 993001893

An item consisting of chemically treated negative and positive sheets of paper. The negative sheet, when exposed to a light source, produces a negative of the original. The negative and the positive sheets of paper are passed through a developing solution and then pressed together to form the final image. The positive sheet of paper is the copy. View more Diffusion Transfer Process Copying Paper Set