Process of preparing a reduced dispersity tabular grain...

Details Process of preparing a reduced dispersity tabular grain... Process of preparing a reduced dispersity tabular grain...

G - Physics

03

C

G03C 1/035 (2006.01) G03C 1/005 (2006.01) G03C 1/043 (2006.01)

Patent

CA 2067556

PROCESS OF PREPARING A REDUCED DISPERSITY TABULAR GRAIN EMULSION Abstract of the Disclosure A process is disclosed of preparing a photographic emulsion containing tabular silver halide grains exhibiting a reduced degree of total grain dispersity. After forming a population of silver halide grain nuclei containing parallel twin planes, a portion of the silver halide grain nuclei are ripened out. The silver halide grain nuclei containing parallel twin planes remaining are then grown to form tabular silver halide grains. The total grain dispersity of the emulsion is reduced by incorporating bromide ion in the dispersing medium prior to forming the silver halide grain nuclei and, at the time parallel twin planes are formed in the silver halide grain nuclei, a polyalkylene oxide block copolymer surfactant containing at least three terminal lipophilic alkylene oxide block units each linked through a hydrophilic alkylene oxide block linking unit accounting for at least 4 percent of the molecular weight of the copolymer.

Affiliated with

Also associated with

Rating

Process of preparing a reduced dispersity tabular grain... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process of preparing a reduced dispersity tabular grain..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process of preparing a reduced dispersity tabular grain... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1890848