Patent EP-1037106-A1 (EP)
Inventor: FUKAGAWA NOBUTAKA
IPC: G03C8/44
Filed: 2000-03-15
Abstract: A color diffusion transfer photographic material is
described which comprises a support having provided thereon at
least two photosensitive silver halide emulsion layers associated
with a nondiffusible dye image-forming compound which forms or
releases a diffusible dye or a precursor thereof relating to
silver development, or a dye image-forming compound the
diffusibility of which itself changes relating to silver
development, wherein said photographic material contains a
compound represented by the following formula (I) and at least
one oxidizing agent represented by the following formula (II),
(III) or (IV):
 
wherein EAG represents an electron-accepting group; N and O
represent a nitrogen atom and an oxygen atom respectively, and
the N-O bond cleaves when EAG accepts an electron from a reducing
agent; R 1  and R 2  each represents a substituent other than a hydrogen
atom, when R 1  or R 2  is bonded to -(Time) t -DIG, each represents a
single bond or a divalent substituent, R 1  and R 2  may be bonded
to each other to form a ring, and R 1  and EAG, or R 2  and EAG may 
be bonded to each other to form a ring; Time represents a group
which releases DIG through the reaction following after said
cleavage between nitrogen and oxygen; DIG represents a moiety
which becomes a development inhibitor as a result of being
released; t represents 0 or 1; and a solid line represents a bond,
and a broken line represents that at least any one is bonded;
 
wherein R 21 , R 22 , R 23  and R 24  each represents a hydrogen atom, a
substituted or unsubstituted alkyl group having from 1 to 10
carbon atoms, a substituted or unsubstituted alkoxyl group having
from 1 to 10 carbon atoms, a substituted or unsubstituted
alkylthio group having from 1 to 10 carbon atoms, a substituted
or unsubstituted aryl group, a substituted or unsubstituted
arylthio group, a substituted or unsubstituted aryloxy group, a
halogen atom, or a cyano group, R 21  and R 22 , or R 23  and R 24  may be
bonded to each other to form a ring; 
 
wherein D 1  and D 2 , which may be the same or different, each
represents an atomic group necessary for forming a benzene ring
or a naphthalene ring; G 1  and G 2 , which may be the same or different,
each represents a hydrogen atom or an arbitrary substituent which
does not cause photographically maleficent influence; A 1 , A 2  and
A 3 , which may be the same or different, each represents a hydrogen
atom or an arbitrary substituent which does not cause
photographically maleficent influence; B 1 , B 2  and B 3 , which may
be the same or different, each represents a hydrogen atom or an
arbitrary substituent which does not cause photographically
maleficent influence; L 1  and L 2 , which may be the same or different,
each represents a linking group; m and n each represents 0 or 1;
and M 1  and M 2 , which may be the same or different, each represents
a component having a function of releasing an azo compound from
a compound represented by formula (III) as a result of development,
or a hydrogen atom; 
 
wherein EAG represents an electron-accepting group; N and O
represent a nitrogen atom and an oxygen atom respectively, and
the N-O bond cleaves when EAG accepts an electron from a reducing
agent; and R 41  and R 42  each represents a substituent other than
a hydrogen atom, R 41  and R 42 , R 41  and EAG, or R 42  and EAG may be
bonded to each other to form a ring.