Photoengraving processes

Photoresist and photoengraving processes have been described and used in industry for well over 100 years. In 1826, W. H. F. Talbott received a British patent (No. 565) on a photoetching process used to... 

Fish glue is a similar protein-based glue made from the skins and bones of fish. An exceptionally clear adhesive can be made from fish and was the first adhesive used for photographic emulsions for photo film and photo resist coatings for photoengraving processes. 

Photoengraving, 74 Photography, 122 cameras for, 47, 53 films foi 53-55, 127 wet plate collodion process in, 52 Photopolymers, 74, 76 Photoresists, 57, 74, 74-76 negative-working, 75 positive-working, 74-75 Photosynthesis, 40,178 Piezoelectric devices, 208 Piggyback markets, 197,198 PLA (polyflactic acid]), 187-188, 189, 200, 201... 

Dowetch [Dow]. TM for magnesium photoengraving sheet, plate, and extruded tube. Also applied to chemicals used in the one-step engraving process. 

Photoresists find applications in several of the printing processes. The major areas of interest include printing plates, photoengraving, silkscreen printing, printed circuits, collotype, and proofing systems. 

Photoengraving is the process by which blocks for illustrations are made. The illustrative material uses either line drawings with lines of differing thickness representing various tones or photographs reproduced as halftone blocks. For halftone work, the continuous tones of the original photographs... 

Techniques used to create depressions of a specific pattern in plastics films or sheeting. Also development of surface patterns on the molded part by photoengraving or a similar process. 

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