| 释义 |
collograph|ˈkɒləgrɑːf, -græf|
[f. Gr. κόλλα glue: see -graph.]
a. A manifold copying apparatus.
b. A photomechanical print made by collography |kəˈlɒgrəfɪ|, the process or art of printing from a film of gelatine, esp. by the heliotype or collotype process. Hence collographic |kɒləʊˈgræfɪk| a.
1871Nature III. 188/1 Edwards's collographic method. 1882Spon's Encycl. Industr. Arts v. 1609 Pumphrey's ‘collograph’ depends on the fact that when a film of moist bichromated gelatine is brought into contact with ferrous salts..the gelatine is so far altered as to acquire the property of attracting a fatty ink. 1891Anthony's Photogr. Bull. IV. 296 A demonstration..of collography. Ibid. 417 Numerous collographic printing experiments have been made with parchment paper watered with bichromatized gelatine. |