The staining properties of motion picture developers

✍ Scribed by J.I. Crabtree; M.L. Dundon

• Publisher: Elsevier Science
• Year: 1926
• Tongue: English
• Weight: 53 KB
• Volume: 202
• Category: Article
• ISSN: 0016-0032
• DOI: 10.1016/s0016-0032(26)90667-4

✦ Synopsis

effect persists on increasing the illumination and that with certain emulsions and developers there is a transition of the lowest exposure fields through disappearance to reversal.

This reversal belongs to that class of reversal effects designated by Liesegang as pseudo-solarization.

Among incidental results it may be mentioned that, while a higher threshold speed is always found by chemical development than by physical development, there is but little difference between the results by pre-fixation and those by post-fixation physical development, provided that fixation in the latter case is not in hypo but in sodium sulphite solution.