Appeal No. 95-3110
Application No. 08/183,058
preferred amount ranges from about 50 to about 200
mg/m A preferred amount of fluorinated organic2.
salts ranges from about 0.5 to about 1000 mg/m , a2
more preferred amount ranges from about 2.5 to about
500 mg/m . A preferred amount of matting agents2
ranges from about 5 to about 2000 mg/m , a more2
preferred amount ranges from about 50 to about 1000
mg/m . A preferred amount of surface modifying2
agents from about 5 to about 5000 mg/m , a more2
preferred amount ranges from about 50 to about 2000
mg/m . Of course, said ranges will vary depending2
upon the support base which is used, the
photographic composition, the manufacturing process
and the use of the photographic material. The non-
ionic surface active agents and the fluorinated
organic salts above can be introduced into the
hydrophilic colloid composition, forming upon
coating the photographic layers, in the form of
solutions, as known to those skilled in the art.
The solvents preferably used are water, alcohol and
acetone or mixture thereof or any other solvent,
provided that is causes no damage to the
photographic emulsion. Matting agents and surface
modifying agents can be introduced into the
hydrophilic
colloidal composition, forming upon coating the
photographic layer, under the form of water
dispersions containing them as small particles, as
said before.
The photographic layers of the present invention
comprise or essentially consist of hydrophilic
colloidal binder. Such hydrophilic colloidal binder
preferably is gelatin or any other film-forming
binder permeable to the conventional processing
baths for photographic materials alone or mixed with
gelatin.
Given the above teachings, we agree with the examiner that the
Cavallo reference would have rendered the use of an organic
4
Page: Previous 1 2 3 4 5 6 7 8 9 Next
Last modified: November 3, 2007