Improvements in Photographic Plates and Films.
Номер патента: GB190509246A
Опубликовано: 13-07-1905
Автор(ы):
Принадлежит: SANDELL FILMS AND PLATES Ltd
Опубликовано: 13-07-1905
Автор(ы):
Принадлежит: SANDELL FILMS AND PLATES Ltd
Реферат: 9246. Sandell Films & Plates, Ltd., and Smith, L. May 2. Sensitized plates and films.-A photographic film is formed of successively superimposed layers of colour-sensitive emulsion which are sensitive to different colours and in progressively varying degrees. The topmost layer of the most highly sensitive emulsion reproduces the least actinic rays, while the most powerful rays producing the extreme high lights penetrate to the less highly sensitized layers.
Improvement in the manufacture of steel plates and blocks
Номер патента: US188458A. Автор: . Владелец: . Дата публикации: 1877-03-13.