Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Silver compound sensitizer containing
Patent
1994-07-13
1997-01-21
Baxter, Janet C.
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Silver compound sensitizer containing
430966, G03C 1015
Patent
active
055958648
ABSTRACT:
A photographic material has been coated on at least one side of a support with in at least one photosensitive layer hexagonal and/or circular tabular silver halide emulsion crystals occupying at least 70% of the total projected area of all grains, having a thickness of 0.15 to 0.30 .mu.m, a coefficient of variation of the tabular grains between 0.15 and 0.45 and an average aspect ratio of at least 2:1, prepared in the absence of ammonia by growing the nuclei, prepared at a pBr value between 1.0 and 2.0 and consuming less than 10% by weight of silver nitrate, during a first growth step at a pBr value between 1.0 and 2.5 consuming at least 10% by weight of silver nitrate and during a second growth step at a pBr value higher than 2.7 during the addition of at least 40% of the total amount of silver nitrate used. The loss in sensitivity and gradation after development of said material in a diluted cheap developer after exposing said photographic material containing said emulsion grains is neglectable in comparison with the characteristics obtained after development in stronger high quality developers.
den Zegel Marc Van
Mestdagh Marcel
Agfa-Gevaert N.V.
Baxter Janet C.
LandOfFree
Method for making tabular silver halide grains does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for making tabular silver halide grains, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for making tabular silver halide grains will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2323276