Method for forming a direct positive image from a material compr

Details Method for forming a direct positive image from a material compr Method for forming a direct positive image from a material compr

1988-12-07

1991-08-06

Bowers, Jr., Charles L.

Radiation imagery chemistry: process, composition, or product th

Color imaging process

Using identified radiation sensitive composition in the...

430405, 430406, 430409, 430410, 430440, 430445, 430446, 430448, 430485, 430566, 430598, 430600, 430611, 430613, 430940, C03C 550, C03C 730, C03C 1495

Patent

active

050377264

ABSTRACT:
A method for forming a direct positive image having a high Dmax and a low Dmin, which comprises image-wise exposing a photographic light-sensitive material having on a support at least one photographic emulsion layer containing unprefogged internal latent image-type silver halide grains and developing the photographic light-sensitive material after or while fogging to form direct positive image, wherein the aforesaid development is performed in the existence of at least one compound selected from the group consisting of compounds represented by formula (I), (II), (III), (IV), (V) or (VI), acid salts of compounds represented by formula (I) to (IV) provided substituents thereof contain an amino group, and acid salts of compound represented by formula (V) or (VI); ##STR1## wherein symbols are defined as in claim 1.

REFERENCES:
patent: 4351896 (1982-09-01), Atland et al.
patent: 4378424 (1983-03-01), Atland et al.
patent: 4409390 (1983-09-01), Atland et al.
patent: 4459351 (1984-07-01), Adin et al.
patent: 4471044 (1984-09-01), Parton et al.
patent: 4481285 (1984-11-01), Takagi et al.
patent: 4581330 (1986-04-01), Gunther et al.
patent: 4582775 (1986-04-01), Toriuchi et al.
patent: 4624913 (1986-11-01), Miyasaka et al.
patent: 4631253 (1986-12-01), Mifune et al.
patent: 4675276 (1987-06-01), Nakamura et al.
patent: 4789627 (1988-12-01), Inoue et al.
patent: 4801520 (1989-01-01), Inoue et al.
patent: 4863839 (1989-09-01), Heki et al.
patent: 4871653 (1989-10-01), Inoue et al.
patent: 4880729 (1989-11-01), Heki et al.
patent: 4933265 (1990-06-01), Inoue et al.
Research Disclosure 18246, "Direct Position . . . ", 6/79, pp. 342-343.
U.S. Application Serial #07/060790, Inoue et al, "Silver Halide . . . , "6/12/87.

Affiliated with

Also associated with

Rating

Method for forming a direct positive image from a material compr 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 forming a direct positive image from a material compr, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for forming a direct positive image from a material compr will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1986264