Supersensitizing direct positive dye combinations

Details Supersensitizing direct positive dye combinations Supersensitizing direct positive dye combinations

1981-02-11

1982-10-19

Louie, Jr., Won H.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Antihalation or filter layer containing

430596, 430597, 430573, 430574, 430576, 430577, 430589, 430587, G03C 524

Patent

active

043550983

ABSTRACT:
Direct positive photographic elements with improved spectral sensitivity in the green and red portion of the visible spectrum are obtained from emulsions containing a supersensitizing amount of a spectral sensitizing dye (a) having a solution absorption maximum less than 495 nm and the lowest vacant energy band less than -3.7 eV, and a sensitizing amount of a spectral sensitizing dye (b) having a lowest vacant energy band between -3.7 eV and 0.3 eV below the lowest vacant energy band of said spectral sensitizing dye (a) and with the highest occupied energy band between -5.9 eV and 0.3 eV above the highest occupied energy level of dye (a).

REFERENCES:
patent: 3501306 (1970-03-01), Illingsworth
patent: 3539349 (1970-11-01), Brooke et al.
patent: 3615608 (1971-10-01), Van Lave
patent: 3759713 (1973-09-01), Florens et al.
patent: 3772030 (1973-11-01), Gilman et al.
patent: 3826656 (1974-07-01), Jenkins et al.

Affiliated with

Also associated with

Rating

Supersensitizing direct positive dye combinations does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Supersensitizing direct positive dye combinations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Supersensitizing direct positive dye combinations will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1339007