Photographic element and diffusion transfer assemblages are described which contain a novel mordant comprising recurring units having the formula ##STR1## wherein A represents recurring units derived from an .alpha.,.beta.-ethylenically unsaturated monomer; PA1 R represents hydrogen or methyl; PA1 each R.sup.1 independently represents hydrogen or an alkyl group of 1 to about 4 carbon atoms; PA1 Q represents an alkyl, substituted alkyl, cycloalkyl, aryl or substituted aryl group; PA1 X.sup..crclbar. represents an anion; PA1 w is from about 0 to about 25 mole percent; PA1 x is from about 30 to about 90 mole percent; PA1 y is from about 8 to about 65 mole percent; and PA1 z is from about 2 to about 9 mole percent.

This invention relates to photography, and more particularly to color 
diffusion transfer photography employing a novel polymeric mordant as 
herein defined. Dye images bound by the mordant of this invention have an 
improved stability to light and improved image sharpness, especially under 
conditions of high temperature and humidity. 
Various formats for color, integral transfer elements are described in the 
prior art, such as U.S. Pat. Nos. 3,415,644; 3,415,645; 3,415,646; 
3,647,437; 3,635,707; 3,756,815, and Canadian Pat. Nos. 928,559 and 
674,082. In these formats, the image-receiving layer containing the 
photographic image for viewing remains permanently attached and integral 
with the image generating and ancillary layers present in the structure 
when a transparent support is employed on the viewing side of the 
assemblage. The image is formed by dyes, produced in the image generating 
units, diffusing through the layers of the structure to a dye 
image-receiving layer comprising a mordant which binds the dye image 
thereto. After exposure of the assemblage, an alkaline processing 
composition permeates the various layers to initiate development of the 
exposed photosensitive silver halide emulsion layers. The emulsion layers 
are developed in proportion to the extent of the respective exposures, and 
the image dyes which are formed or released in the respective image 
generating layers begin to diffuse throughout the structure. At least a 
portion of the imagewise distribution of diffusible dyes diffuses to the 
dye image-receiving layer to form an image of the original subject. 
Dye stability is an important consideration in any photographic system. All 
photographic dyes are, to a greater or lesser degree, unstable to light. 
Any improvement in dye stability, however slight, is desirable provided 
other properties are not affected. 
U.S. Pat. No. 4,124,386 relates to mordants comprising vinylimidazole 
polymers which may be partially quaternized. Included in a list of 
possible comonomers is acrylonitrile. Specific copolymers listed in 
columns 9 and 10 include those with quaternized vinylimidazole of from 10 
to 40 mole percent. A specific comonomer mentioned is styrene. U.S. Pat. 
No. 4,273,853 also relates to mordants containing partially quaternized 
vinylimidazole, the quaternized component comprising from 0 to 40 mole 
percent. Also included in a list of possible comonomers is acrylonitrile. 
As will be shown by comparative tests hereinafter, the polymer of the 
invention must be selected so that a quaternized vinylimidazole component 
in the polymer must not be greater than about 9 mole percent in order to 
provide improved dye stability and image sharpness in the dyes mordanted 
thereto. These results cannot be obtained without the acrylonitrile 
component and the quaternized vinylimidazole component in the proportions 
as stated herein. 
The mordants of this invention also have good "dye-holding" properties 
which produce sharp images having good D.sub.min /D.sub.max 
discrimination. In addition, these mordants are essentially colorless, 
have low stain, are stable upon keeping, are easy to coat using 
conventional techniques as dispersions or solution polymers and do not 
produce dye hue shifts. 
A photographic element in accordance with the invention comprises a support 
having thereon at least one photosensitive silver halide emulsion layer 
having associated therewith a dye image-providing material, the support 
also having thereon a dye image-receiving layer comprising a mordant which 
is a polymer comprising recurring units having the formula: 
##STR2## 
wherein 
A represents recurring units derived from an .alpha.,.beta.-ethylenically 
unsaturated monomer; 
R represents hydrogen or methyl; 
each R.sup.1 independently represents hydrogen or an alkyl group of 1 to 
about 4 carbon atoms, such as methyl, ethyl, propyl, isopropyl, butyl or 
isobutyl; 
Q represents an alkyl, substituted alkyl, cycloalkyl, aryl or substituted 
aryl group; 
X.sup..crclbar. represents an anion; 
w is from about 0 to about 25 mole percent, preferably about 5 to about 15 
mole percent; 
x is from about 30 to about 90 mole percent, preferably about 40 to about 
60 mole percent; 
y is from about 8 to about 65 mole percent, preferably about 25 to about 45 
mole percent; and 
z is from about 2 to about 9 mole percent, preferably about 3 to about 6 
mole percent. 
A in the formula above represents recurring units derived from one or more 
.alpha.,.beta.-ethylenically unsaturated monomers such as acrylic esters, 
e.g., methyl methacrylate, butyl acrylate, butyl methacrylate, ethyl 
acrylate, phenoxyethyl acrylate, and cyclohexyl methacrylate; vinyl 
esters, such as vinyl acetate; amides, such as acrylamide, diacetone 
acrylamide, N-methylacrylamide and methacrylamide; ketones, such as methyl 
vinyl ketone, ethyl vinyl ketone and p-vinylacetophenone; halides, such as 
vinyl chloride and vinylidene chloride; ethers, such as methyl vinyl 
ether, ethyl vinyl ether and vinylbenzyl methyl ether; 
.alpha.,.beta.-unsaturated acids, such as acrylic acid and methacrylic 
acid and other unsaturated acids such as vinylbenzoic acid; simple 
heterocyclic monomers, such as vinylpyridine and vinylpyrrolidone; 
olefins, such as ethylene, propylene, butylene and styrene as well as 
substituted styrene; diolefins, such as butadiene and 
2,3-dimethylbutadiene, and other vinyl monomers within the knowledge and 
skill of an ordinary worker in the art. Styrene is employed to provide A 
in a preferred embodiment of the invention. 
In the above formula, Q represents an alkyl or substituted alkyl group, 
cycloalkyl, aryl or substituted aryl group, such as methyl, ethyl, butyl, 
hydroxyethyl, hydroxypropyl, dihydroxypropyl, cyclohexyl, phenyl, xylyl, 
tolyl, benzyl, diphenylmethyl, 4-methoxybenzyl, p-methoxyphenyl, 
3,4-dimethoxyphenyl, 3,4-dimethoxybenzyl, 3,4-methylenedioxybenzyl, 
3,4-ethylenedioxyphenyl, 2-(2,4,5-trimethoxyphenoxy)ethyl, 
3-(3,4-dimethoxyphenoxy)-2-hydroxypropyl, 
3-(2,4,5-trimethoxyphenoxy)-2-hydroxypropyl, 3,5-diethoxyphenyl, 
p-chlorobenzyl, 3,4-dibromobenzyl, 3-(4-methoxyphenoxy)-2-hydroxypropyl, 
3-(3,4-dimethoxyphenyl)propyl, 2-(3,4-methylenedioxyphenoxy)ethyl, or 
2-(3,4-dimethoxyphenoxy)ethyl. 
In a preferred embodiment of the invention R is hydrogen, each R.sup.1 is 
hydrogen, w is 0 and Q is a hydroxyalkyl group. In another preferred 
embodiment of the invention, R is hydrogen, each R.sup.1 is hydrogen, Q is 
a hydroxyalkyl group, A represents a styrene moiety, and w is from about 5 
to about 15 mole percent. In another preferred embodiment of the invention 
the styrene moiety is substituted with at least one methoxy or 
methylenedioxy group. In yet another preferred embodiment of the 
invention, R is hydrogen, each R.sup.1 is hydrogen and Q is benzyl, 
3-(4-methoxyphenoxy)-2-hydroxypropyl, 3-(3,4-dimethoxyphenyl)propyl, 
2-(3,4-methylenedioxyphenoxy)ethyl, or 2-(3,4-dimethoxyphenoxy)ethyl. 
X.sup..crclbar. in the above formula represents an anion, such as bromide, 
chloride, acetate, a dialkyl phosphate, propionate, methanesulfonate, 
methyl sulfate, or a benzene or substituted benzene sulfonate, such as 
p-toluenesulfonate. 
Although some photographic mordants are known that have good initial image 
sharpness and retain this sharpness under high humidity incubation 
conditions, their dye-light stability has been acceptable only if they 
have been used in conjunction with stabilizers and other addenda. The 
mordant polymers of the present invention give both good image sharpness 
and dye-light stability in simplified formulation mordant receivers with 
fewer components. This reduces coating difficulties and aids in producing 
more uniform coatings. 
Conventional bulk, solution or bead vinyl addition polymerization 
techniques can be used to prepare the polymers of this invention as 
described in M. P. Stevens, "Polymer Chemistry--An Introduction", Addison 
Wesley Publishing Company, Reading, Mass. (1975), the disclosure of which 
is hereby incorporated by reference. However, continuous vinyl 
polymerization techniques are preferred. 
Examples of novel polymers within the scope of the invention include the 
following: 
Compound 1 
Poly[acrylonitrile-co-1-vinylimidazole-co-3-(2-hydroxyethyl)-1-vinylimidaz 
olium chloride] (mole ratio 56:40:4) 
##STR3## 
Compound 2 
Poly[acrylonitrile-co-1-vinylimidazole-co-3-(2-hydroxyethyl)-1-vinylimidaz 
olium chloride] (mole ratio 82:15:3) 
##STR4## 
Compound 3 
Poly{acrylonitrile-co-1-vinylimidazole-co-3-[3-(4-methoxyphenoxy)-2-hydrox 
ypropyl]-1-vinylimidazolium propionate} (mole ratio 56:37:7) 
##STR5## 
Compound 4 
Poly[3,4-methylenedioxystyrene-co-acrylonitrile-co-1-vinylimidazole-co-3-( 
2-hydroxyethyl)-1-vinylimidazolium chloride] (mole ratio 8:50:40:2) 
##STR6## 
Compound 5 
Poly[3,4-methylenedioxystyrene-co-acrylonitrile-co-1-vinylimidazole-co-3-( 
2-hydroxyethyl)-1-vinylimidazolium chloride] (mole ratio 8:49:39:4) 
##STR7## 
Compound 6 
Poly[3,4-methylenedioxystyrene-co-acrylonitrile-co-1-vinylimidazole-co-3-( 
2-hydroxyethyl)-1-vinylimidazolium chloride] (mole ratio 8:48:39:5) 
##STR8## 
Compound 7 
Poly[3,4-methylenedioxystyrene-co-acrylonitrile-co-1-vinylimidazole-co-3-( 
2-hydroxyethyl)-1-vinylimidazolium chloride] (mole ratio 8:47:38:7) 
##STR9## 
Compound 8 
Poly{3,4-dimethoxystyrene-co-acrylonitrile-co-1-vinylimidazole-co-3-[3-(3, 
4-dimethoxyphenyl)propyl]-1-vinylimidazolium methanesulfonate} (mole ratio 
22:44:29:5) 
##STR10## 
Compound 9 
Poly[3,4-dimethoxystyrene-co-acrylonitrile-co-1-vinylimidazole-co-3-(2-hyd 
roxyethyl)-1-vinylimidazolium chloride] (mole ratio 8:44:39:9) 
##STR11## 
Compound 10 
Poly[3,4-methylenedioxystyrene-co-acrylonitrile-co-1-vinylimidazole-co-3-( 
2-hydroxyethyl)-1-vinylimidazolium chloride] (mole ratio 9:50:36:5) 
##STR12## 
Compound 11 Poly{cyclohexyl 
methacrylate-co-acrylonitrile-co-1-vinylimidazole-co-[3-(3,4-dimethoxyphen 
yl)propyl]-1-vinylimidazolium methanesulfonate} (mole ratio 8:52:35:5) 
##STR13## 
Compound 12 Poly{cyclohexyl 
methacrylate-co-acrylonitrile-co-1-vinylimidazole-co-[2-(3,4-dimethoxyphen 
oxy)ethyl]-1-vinylimidazolium methanesulfonate} (mole ratio 8:52:32:8) 
##STR14## 
Compound 13 Poly{cyclohexyl 
methacrylate-co-acrylonitrile-co-1-vinylimidazole-co-[2-(3,4-methylenediox 
yphenoxy)ethyl]-1-vinylimidazolium methanesulfonate} (mole ratio 8:52:32:8) 
##STR15## 
Compound 14 
Poly[3,4-methylenedioxyphenoxyvinyl-co-acrylonitrile-co-1-vinylimidazole-c 
o-3-(2-hydroxyethyl)-1-vinylimidazolium chloride] (mole ratio 10:45:38:7) 
##STR16## 
Compound 15 Poly[2-(3,4-methylenedioxy-6-methoxyphenoxy)ethyl 
methacrylate-co-acrylonitrile-co-1-vinylimidazole-co-3-(2,2,2-hydroxymethy 
l)ethyl-1-vinylimidazolium chloride] (mole ratio 8:50:34:8) 
##STR17## 
Compound 16 
Poly[styrene-co-methacrylonitrile-co-1-vinylimidazole-co-3-(2,3-dihydroxyp 
ropyl)-1-vinylimidazolium chloride] (mole ratio 10:50:32:8) 
##STR18## 
Compound 17 
Poly[methacrylonitrile-co-2-methyl-1-vinylimidazole-co-2-methyl-3-(2-hydro 
xyethyl)-1-vinylimidazolium chloride] (mole ratio 45:49:6) 
##STR19## 
Compound 18 
Poly[methacrylonitrile-co-1-vinylimidazole-co-3-(2,3,4,5,6-pentahydroxyhex 
yl)-1-vinylimidazolium chloride] (mole ratio 40:52:8) 
##STR20## 
Compound 19 Poly[2,3,4,5,6-pentahydroxyhexyl 
acrylate-co-acrylonitrile-co-1-vinylimidazole-co-3-(2,3-dihydroxypropyl)-1 
-vinylimidazolium chloride] (mole ratio 10:37:45:8) 
##STR21## 
Compound 20 
Poly{3,4-methylenedioxystyrene-co-acrylonitrile-co-1-vinylimidazole-co-3-[ 
3-(2,4,5-trimethoxyphenoxy)-2-hydroxypropyl]-1-vinylimidazolium propionate] 
(mole ratio 10:50:32:8) 
##STR22## 
The photographic element described above can be treated in any manner with 
an alkaline processing composition to effect or initiate development. A 
preferred method for applying processing composition is by use of a 
rupturable container or pod which contains the composition. In general, 
the processing composition employed in this invention contains the 
developing agent for development, although the composition could also just 
be an alkaline solution where the developer is incorporated in the 
photographic element, image-receiving element or process sheet, in which 
case the alkaline solution serves to activate the incorporated developer. 
A photographic assemblage in accordance with this invention is adapted to 
be processed by an alkaline processing composition, and comprises: 
(1) a photographic element as described above; 
and 
(2) a dye image-receiving layer. 
In this embodiment, the processing composition may be inserted into the 
assemblage, such as by interjecting processing solution with communicating 
members similar to hypodermic syringes which are attached either to a 
camera or camera cartridge. The processing composition can also be applied 
by means of a swab or by dipping in a bath, if so desired. Another method 
of applying processing composition to a film assemblage which can be used 
in our invention is the liquid spreading means described in U.S. Pat. No. 
4,370,407 of Columbus, issued Jan. 25, 1983. 
In a preferred embodiment of the invention, the assemblage itself contains 
the alkaline processing composition and means containing same for 
discharge within the film unit. There can be employed, for example, a 
rupturable container which is adapted to be positioned so that during 
processing of the film unit, a compressive force applied to the container 
by pressure-applying members, such as would be found in a camera designed 
for in-camera processing, will effect a discharge of the container's 
contents within the film unit. 
The dye image-providing material useful in this invention is either 
positive- or negative-working, and is either initially mobile or immobile 
in the photographic element during processing with an alkaline 
composition. Examples of initially mobile, positive-working dye 
image-providing materials useful in this invention are described in U.S. 
Pat. Nos. 2,983,606; 3,536,739; 3,705,184; 3,482,972; 2,756,142; 3,880,658 
and 3,854,985. Examples of negative-working dye image-providing materials 
useful in this invention include conventional couplers which react with 
oxidized aromatic primary amino color developing agents to produce or 
release a dye such as those described, for example, in U.S. Pat. No. 
3,227,550 and Canadian Pat. No. 602,607. In a preferred embodiment of this 
invention, the dye image-providing material is a ballasted, 
redox-dye-releasing (RDR) compound. Such compounds are well known to those 
skilled in the art and are, generally speaking, compounds which will react 
with oxidized or unoxidized developing agent or electron transfer agent to 
release a dye. Such nondiffusible RDR's include negative-working 
compounds, as described in U.S. Pat. Nos. 3,728,113 of Becker et al.; 
3,725,062 of Anderson and Lum; 3,698,897 of Gompf and Lum; 3,628,952 of 
Puschel et al.; 3,443,939 and 3,443,940 of Bloom et al.; 4,053,312 of 
Fleckenstein; 4,076,529 of Fleckenstein et al.; 4,055,428 of Koyama et 
al.; 4,149,892 of Deguchi et al.; 4,198,235 and 4,179,291 of Vetter et 
al.; Research Disclosure 15157, November, 1976 and Research Disclosure 
15654, April, 1977. 
Such nondiffusible RDR's also include positive-working compounds, as 
described in U.S. Pat. Nos. 3,980,479; 4,139,379; 4,139,389; 4,199,354, 
4,232,107, 4,199,355 and German Pat. No. 2,854,946, the disclosures of 
which are hereby incorporated by reference. 
In a preferred embodiment of the invention, RDR's such as those in the 
Fleckenstein et al. patent referred to above are employed. Such compounds 
are ballasted sulfonamido compounds which are alkalicleavable upon 
oxidation to release a diffusible dye from the nucleus and have the 
formula: 
##STR23## 
wherein: (a) Col is a dye or dye precursor moiety; 
(b) Ballast is an organic ballasting radical of such molecular size and 
configuration (e.g., simple organic groups or polymeric groups) as to 
render the compound nondiffusible in the photosensitive element during 
development in an alkaline processing composition; 
(c) G is OR.sup.6 or NHR.sup.7 wherein R.sup.6 is hydrogen or a 
hydrolyzable moiety and R.sup.7 is hydrogen or a substituted or 
unsubstituted alkyl group of 1 to 22 carbon atoms, such as methyl, ethyl, 
hydroxyethyl, propyl, butyl, secondary butyl, tertiary butyl, cyclopropyl, 
4-chlorobutyl, cyclobutyl, 4-nitroamyl, hexyl, cyclohexyl, octyl, decyl, 
octadecyl, docosyl, benzyl or phenethyl (when R.sup.7 is an alkyl group of 
greater than 6 carbon atoms, it can serve as a partial or sole Ballast 
group); 
(d) Y represents the atoms necessary to complete a benzene nucleus, a 
naphthalene nucleus or a 5- to 7-membered heterocyclic ring such as 
pyrazolone or pyrimidine; and 
(e) m is a positive integer or 1 to 2 and is 2 when G is OR.sup.6 or when 
R.sup.7 is a hydrogen or an alkyl group of less than 8 carbon atoms. 
For further details concerning the abovedescribed sulfonamido compounds and 
specific examples of same, reference is made to the above-mentioned 
Fleckenstein et al. U.S. Pat. No. 4,076,529. 
In another preferred embodiment of the invention, positive-working, 
nondiffusible RDR's of the type disclosed in U.S. Pat. Nos. 4,139,379 and 
4,139,389 are employed. In this embodiment, an immobile compound is 
employed which as incorporated in a photographic element is incapable of 
releasing a diffusible dye. However, during photographic processing under 
alkaline conditions, the compound is capable of accepting at least one 
electron (i.e., being reduced) and thereafter releases a diffusible dye. 
These immobile compounds are ballasted electron accepting nucleophilic 
displacement compounds. 
The dye image-receiving layer in the above-described film assemblage is 
optionally located on a separate support adapted to be superposed on the 
photographic element after exposure thereof. Such image-receiving elements 
are generally disclosed, for example, in U.S. Pat. No. 3,362,819. 
When the means for discharging the processing composition is a rupturable 
container, it is usually positioned in relation to the photographic 
element and the image-receiving element described above so that a 
compressive force applied to the container by pressure-applying members, 
such as would be found in a typical camera used for in-camera processing, 
will effect a discharge of the container's contents between the 
image-receiving element and the outermost layer of the photographic 
element. After processing, the dye image-receiving element is separated 
from the photographic element. 
In another embodiment, the dye image-receiving layer in the above-described 
film assemblage is integral with the photographic element and is located 
between the support and the lowermost photosensitive silver halide 
emulsion layer. One useful format for integral negative-receiver 
photographic elements is disclosed in Belgian Pat. No. 757,960. In such an 
embodiment, the support for the photographic element is transparent and is 
coated with a dye image-receiving layer as described above, a 
substantially opaque light-reflective layer, e.g., TiO.sub.2, and then the 
photosensitive layer or layers described above. After exposure of the 
photographic element, a rupturable container containing an alkaline 
processing composition and an opaque process sheet are brought into 
superposed position. Pressure-applying members in the camera rupture the 
container and spread processing composition over the photographic element 
as the film unit is withdrawn from the camera. The processing composition 
develops each exposed silver halide emulsion layer, and dye images, formed 
as a function of development, diffuse to the image-receiving layer to 
provide a positive, right-reading image which is viewed through the 
transparent support on the opaque reflecting layer background. For other 
details concerning the format of this particular integral film unit, 
reference is made to the above-mentioned Belgian Pat. No. 757,960. 
Another format for integral negative-receiver photographic elements in 
which the present invention is useful is disclosed in Canadian Pat. No. 
928,559. In this embodiment, the support for the photographic element is 
transparent and is coated with the dye image-receiving layer described 
above, a substantially opaque, light-reflective layer and the 
photosensitive layer or layers described above. A rupturable container, 
containing an alkaline processing composition and an opacifier, is 
positioned between the top layer and a transparent cover sheet which has 
thereon, in sequence, a neutralizing layer, and a timing layer. The film 
unit is placed in a camera, exposed through the transparent cover sheet 
and then passed through a pair of pressure-applying members in the camera 
as it is being removed therefrom. The pressure-applying members rupture 
the container and spread processing composition and opacifier over the 
negative portion of the film unit to render it light-insensitive. The 
processing composition develops each silver halide layer and dye images, 
formed as a result of development, diffuse to the image-receiving layer to 
provide a positive, right-reading image which is viewed through the 
transparent support on the opaque reflecting layer background. For further 
details concerning the format of this particular integral film unit, 
reference is made to the above-mentioned Canadian Pat. No. 928,559. 
Still other useful integral formats in which this invention can be employed 
are described in U.S. Pat. Nos. 3,415,644; 3,415,645; 3,415,646; 3,647,437 
and 3,635,707. In most of these formats, a photosensitive silver halide 
emulsion is coated on an opaque support and a dye image-receiving layer is 
located on a separate transparent support superposed over the layer 
outermost from the opaque support. In addition, this transparent support 
also contains a neutralizing layer and a timing layer underneath the dye 
image-receiving layer. 
In another embodiment of the invention, a neutralizing layer and timing 
layer are located underneath the photosensitive layer or layers. In that 
embodiment, the photographic element would comprise a support having 
thereon, in sequence, a neutralizing layer, a timing layer and at least 
one photosensitive silver halide emulsion layer having associated 
therewith a dye image-providing material. A dye image-receiving layer as 
described above would be provided on a second support with the processing 
composition being applied therebetween. This format could either be 
integral or peel-apart as described above. 
Another embodiment of the invention uses the image-reversing technique 
disclosed in British Pat. No. 904,364, page 19, lines 1 through 41. In 
this process, the dye-releasing compounds are used in combination with 
physical development nuclei in a nuclei layer contiguous to the 
photosensitive silver halide negative emulsion layer. The film unit 
contains a silver halide solvent, preferably in a rupturable container 
with the alkaline processing composition. 
A process for producing a photographic transfer image in color according to 
the invention from an imagewise-exposed photosensitive element comprising 
a support having thereon at least one photosensitive silver halide 
emulsion layer having associated therewith a dye image-providing material, 
comprises treating the element with an alkaline processing composition in 
the presence of a silver halide developing agent to effect development of 
each of the exposed silver halide emulsion layers. An imagewise 
distribution of dye image-providing material is formed as a function of 
development and at least a portion of it diffuses to a dye image-receiving 
layer to provide the transfer image. 
The film unit or assemblage of the present invention is used to produce 
positive images in single or multicolors. In a three-color system, each 
silver halide emulsion layer of the film assembly will have associated 
therewith a dye image-providing material which possesses a predominant 
spectral absorption within the region of the visible spectrum to which 
said silver halide emulsion is sensitive, i.e., the blue-sensitive silver 
halide emulsion layer will have a yellow dye image-providing material 
associated therewith, the green-sensitive silver halide emulsion layer 
will have a magenta dye image-providing material associated therewith and 
the red-sensitive silver halide emulsion layer will have a cyan dye 
image-providing material associated therewith. The dye image-providing 
material associated with each silver halide emulsion layer is contained 
either in the silver halide emulsion layer itself or in a layer contiguous 
to the silver halide emulsion layer, i.e., the dye image-providing 
material can be coated in a separate layer underneath the silver halide 
emulsion layer with respect to the exposure direction. 
The concentration of the dye image-providing material that is employed in 
the present invention can be varied over a wide range, depending upon the 
particular compound employed and the results desired. For example, the dye 
image-providing material coated in a layer at a concentration of 0.1 to 3 
g/m.sup.2 has been found to be useful. The dye image-providing material is 
usually dispersed in a hydrophilic film forming natural material or 
synthetic polymer, such as gelatin, polyvinyl alcohol, etc, which is 
adapted to be permeated by aqueous alkaline processing composition. 
A variety of silver halide developing agents are useful in this invention. 
Specific examples of developers or electron transfer agents (ETA's) useful 
in this invention include hydroquinone compounds, aminophenol compounds, 
catechol compounds, 3-pyrazolidinone compounds, such as those disclosed in 
column 16 of U.S. Pat. No. 4,358,527, issued Nov. 9, 1982. A combination 
of different ETA's, such as those disclosed in U.S. Pat. No. 3,039,869, 
can also be employed. These ETA's are employed in the liquid processing 
composition or contained, at least in part, in any layer or layers of the 
photographic element or film assemblage to be activated by the alkaline 
processing composition, such as in the silver halide emulsion layers, the 
dye image-providing material layers, interlayers, image-receiving layer, 
etc. 
In the invention, dye image-providing materials can be used which produce 
diffusible dye images as a function of development. Either conventional 
negative-working or direct-positive silver halide emulsions are employed. 
If the silver halide emulsion employed is a direct-positive silver halide 
emulsion, such as an internal image emulsion designed for use in the 
internal image reversal process, or a fogged, direct-positive emulsion 
such as a solarizing emulsion, which is developable in unexposed areas, a 
positive image can be obtained on the dye image-receiving layer by using 
negative-working ballasted, redox dye-releasers. After exposure of the 
film assemblage or unit, the alkaline processing composition permeates the 
various layers to initiate development of the exposed photosensitive 
silver halide emulsion layers. The developing agent present in the film 
unit develops each of the silver halide emulsion layers in the unexposed 
areas (since the silver halide emulsions are direct-positive ones), thus 
causing the developing agent to become oxidized imagewise corresponding to 
the unexposed areas of the direct-positive silver halide emulsion layers. 
The oxidized developing agent then cross-oxidizes the dye-releasing 
compounds and the oxidized form of the compounds then undergoes a 
base-initiated reaction to release the dyes imagewise as a function of the 
imagewise exposure of each of the silver halide emulsion layers. At least 
a portion of the imagewise distributions of diffusible dyes diffuse to the 
image-receiving layer to form a positive image of the original subject. 
After being contacted by the alkaline processing composition, a 
neutralizing layer in the film unit or image-receiving unit lowers the pH 
of the film unit or image receiver to stabilize the image. 
Internal image silver halide emulsions useful in this invention are 
described more fully in the November, 1976 edition of Research Disclosure, 
pages 76 through 79, the disclosure of which is hereby incorporated by 
reference. 
The various silver halide emulsion layers of a color film assembly employed 
in this invention can be disposed in the usual order, i.e., the 
blue-sensitive silver halide emulsion layer first with respect to the 
exposure side, followed by the green-sensitive and red-sensitive silver 
halide emulsion layers. If desired, a yellow dye layer or a yellow 
colloidal silver layer can be present between the blue-sensitive and 
green-sensitive silver halide emulsion layers for absorbing or filtering 
blue radiation that is transmitted through the blue-sensitive layer. If 
desired, the selectively sensitized silver halide emulsion layers can be 
disposed in a different order, e.g., the blue-sensitive layer first with 
respect to the exposure side, followed by the red-sensitive and 
green-sensitive layers. 
The rupturable container employed in certain embodiments of this invention 
is disclosed in U.S. Pat. Nos. 2,543,181; 2,643,886; 2,653,732; 2,723,051; 
3,056,492; 3,056,491 and 3,152,515. In general, such containers comprise a 
rectangular sheet of fluid- and air-impervious material folded 
longitudinally upon itself to form two walls which are sealed to one 
another along their longitudinal and end margins to form a cavity in which 
processing solution is contained. 
Generally speaking, except where noted otherwise, the silver halide 
emulsion layers employed in the invention comprise photosensitive silver 
halide dispersed in gelatin and are about 0.6 to 6 microns in thickness; 
the dye image-providing materials are dispersed in an aqueous alkaline 
solution-permeable polymeric binder, such as gelatin, as a separate layer 
about 0.2 to 7 microns in thickness; and the alkaline solution-permeable 
polymeric interlayers, e.g., gelatin, are about 0.2 to 5 microns in 
thickness. Of course, these thicknesses are approximate only and can be 
modified according to the product desired. 
Scavengers for oxidized developing agent can be employed in various 
interlayers of the photographic elements of the invention. Suitable 
materials are disclosed on page 83 of the November 1976 edition of 
Research Disclosure, the disclosure of which is hereby incorporated by 
reference. 
The dye image-receiving layers containing the novel mordants of this 
invention may also contain a polymeric vehicle as long as it is compatible 
therewith. Suitable materials are disclosed, for example, in U.S. Pat. No. 
3,958,995, and in Product Licensing Index, 92, December, 1971, Publ. No. 
9232; page 108, paragraph VIII, the disclosures of which are hereby 
incorporated by reference. 
Use of a neutralizing material in the film units employed in this invention 
will usually increase the stability of the transferred image. Generally, 
the neutralizing material will effect a reduction in the pH of the image 
layer from about 13 or 14 to at least 11 and preferably 5 to 8 within a 
short time after imbibition. Suitable materials and their functioning are 
disclosed on pages 22 and 23 of the July 1974 edition of Research 
Disclosure, and pages 35 through 37 of the July 1975 edition of Research 
Disclosure, the disclosures of which are hereby incorporated by reference. 
A timing or inert spacer layer can be employed in the practice of this 
invention over the neutralizing layer which "times" or controls the pH 
reduction as a function of the rate at which alkali diffuses through the 
inert spacer layer. Examples of such timing layers and their functioning 
are disclosed in the Research Disclosure articles mentioned in the 
paragraph above concerning neutralizing layers. 
The alkaline processing composition employed in this invention is the 
conventional aqueous solution of an alkaline material, e.g., alkali metal 
hydroxides or carbonates such as sodium hydroxide, sodium carbonate or an 
amine such as diethylamine, preferably possessing a pH in excess of 11, 
and preferably containing a developing agent as described previously. 
Suitable materials and addenda frequently added to such compositions are 
disclosed on pages 79 and 80 of the November, 1976 edition of Research 
Disclosure, the disclosure of which is hereby incorporated by reference. 
The alkaline solution permeable, substantially opaque, light-reflective 
layer employed in certain embodiments of photographic film units used in 
this invention is described more fully in the November, 1976 edition of 
Research Disclosure, page 82, the disclosure of which is hereby 
incorporated by reference. 
The supports for the photographic elements used in this invention can be 
any material, as long as it does not deleteriously affect the photographic 
properties of the film unit and is dimensionally stable. Typical flexible 
sheet materials are described on page 85 of the November, 1976 edition of 
Research Disclosure, the disclosure of which is hereby incorporated by 
reference. 
While the invention has been described with reference to layers of silver 
halide emulsions and dye image-providing materials, dotwise coating, such 
as would be obtained using a gravure printing technique, could also be 
employed. In this technique, small dots of blue-, green- and red-sensitive 
emulsions have associated therewith, respectively, dots of yellow, magenta 
and cyan color-providing substances. After development, the transferred 
dyes would tend to fuse together into a continuous tone. In an alternative 
embodiment, the emulsions sensitive to each of the three primary regions 
of the spectrum can be disposed as a single segmented layer, e.g., as by 
the use of microvessels, as described in Whitmore U.S. Pat. No. 4,362,806, 
issued Dec. 7, 1982. 
The silver halide emulsions useful in this invention, both negative-working 
and direct-positive ones, are well known to those skilled in the art and 
are described in Research Disclosure, Volume 176, December, 1978, Item 
17643, pages 22 and 23, "Emulsion preparation and types"; they are usually 
chemically and spectrally sensitized as described on page 23, "Chemical 
sensitization", and "Spectral sensitization and desensitization", of the 
above article; they are optionally protected against the production of fog 
and stabilized against loss of sensitivity during keeping by employing the 
materials described on pages 24 and 25, "Antifoggants and stabilizers", of 
the above article; they usually contain hardeners and coating aids as 
described on page 26, "Hardeners", and pages 26 and 27, "Coating aids", of 
the above article; they and other layers in the photographic elements used 
in this invention usually contain plasticizers, vehicles and filter dyes 
described on page 27, "Plasticizers and lubricants"; page 26, "Vehicles 
and vehicle extenders" ; and pages 25 and 26, "Absorbing and scattering 
materials", of the above article; they and other layers in the 
photographic elements used in this invention can contain addenda which are 
incorporated by using the procedures described on page 27, "Methods of 
addition", of the above article; and they are usually coated and dried by 
using the various techniques described on pages 27 and 28, "Coating and 
drying procedures", of the above article, the disclosures of which are 
hereby incorporated by reference. Research Disclosure and Product 
Licensing Index are publications of Industrial Opportunities Ltd.; 
Homewell, Havant; Hampshire, P09 1EF, United Kingdom. 
The term "nondiffusing" used herein has the meaning commonly applied to the 
term in photography and denotes materials that for all practical purposes 
do not migrate or wander through organic colloid layers, such as gelatin, 
in the photographic elements of the invention in an alkaline medium and 
preferably when processed in a medium having a pH of 11 or greater. The 
same meaning is to be attached to the term "immobile". The term 
"diffusible" as applied to the materials of this invention has the 
converse meaning and denotes materials having the property of diffusing 
effectively through the colloid layers of the photographic elements in an 
alkaline medium. "Mobile" has the same meaning as "diffusible". 
The term "associated therewith" as used herein is intended to mean that the 
materials can be in either the same or different layers, so long as the 
materials are accessible to one another.

The following examples are provided to further illustrate the invention. 
Example 1--Preparation of Compound 3 
The basic polymer before quaternization may be made by conventional batch, 
semicontinuous, or continuous polymerization techniques. However, 
continuous polymerization techniques as described in Research Disclosure, 
Vol. 191, March 1980, Item 19109, are preferred. A single or mixture of 
free radical generating initiator(s) may be used at temperatures ranging 
from 50.degree. to 150.degree. C., preferably 60.degree.-90.degree. C. 
The imidazole component of the formed polymer may conveniently be partially 
quaternized in solution just prior to coating; Compound 3 was prepared in 
this manner. A solution containing 2.5 g 
poly(acrylonitrile-co-1-vinylimidazole) (54:46 mole ratio) and 3 ml 
propionic acid in 40 ml distilled water was heated to 43.degree. C. To 
this solution was added 0.25 g of p-methoxyphenyl glycidyl ether dissolved 
in 10 ml methanol. The heated mixture was stirred for 10 minutes. Just 
prior to coating, 30 ml of a 10 percent gelatin solution was added. The 
preparation is believed to produce a polymer of 10 weight percent or 4 
mole percent 3-(4-methoxyphenoxy)-2-hydroxypropyl quaternization with a 
propionate anion. 
Example 2--Preparation of Compound 6 
Poly[3,4-methylenedioxystyrene-co-acrylonitrile-co-1-vinylimidazole-co-3-( 
2-hydroxyethyl)-1-vinylimidazolium chloride] (mole ratio 8:48:39:5) 
Two reactors are charged with 0.5 liter each of N,N-dimethylformamide (DMF) 
and deoxygenated by bubbling pure nitrogen under the surface for 
approximately thirty minutes. The temperature of the reactor contents is 
maintained at 75.degree. C. 
An initiator solution is prepared by deoxygenating 10.6 kg of DMF for 0.75 
hour using a pure nitrogen sparge. To 6.02 kg of the deoxygenated DMF, 
49.65 g of 2,2'-azobis(2,4-dimethylvaleronitrile) sold by duPont as VAZO 
52 and 33.1 g of 2,2'-azobis(2-methylpropionitrile) sold by duPont as VAZO 
64 are added with stirring. Then to 4.5 kg DMF, 14.2 g of each, VAZO 52 and 
VAZO 64, are added with stirring. Each of these solutions is put into 
separate header tanks. 
645 g of 3,4-Methylenedioxystyrene, 1393 g of acrylonitrile, and 2262 g of 
1-vinylimidazole (freshly distilled) are mixed and deoxygenated by 
bubbling pure nitrogen under the surface for 0.5 hour. This mixture is 
then put into a cooled monomer head tank and kept cool for the duration of 
the run. 
The monomers are pumped into reactor 1 at a rate of 1.14 ml/min, and the 
first and second initiator solutions are pumped into reactors 1 and 2, 
respectively, at a rate of 1.49 ml/min. The contents of reactor 1 are fed 
to reactor 2 and the residence volume for each reactor is 0.5 liter and 
the residence times are 3.4 hours and 2.4 hours for reactors 1 and 2, 
respectively. The theoretical solids are 43.3% and 30.7% for reactors 1 
and 2, respectively. 
For the first 14.4 hours the material collected must be discarded. After 
14.4 hours the steady state material is collected in a 5 gallon plastic 
bucket. The overall yield of polymer throughout the 50.1 hours of steady 
state is 10.52 kg of a 30.5% solution which is equivalent to a 96% yield. 
Quaternization, Acidification and Diafiltration of the Polymer 
To a five gallon glass-lined, jacketed reactor is added 8531 g of polymer 
solution at 31% solids. This solution is deoxygenated by bubbling nitrogen 
into the solution for one hour and further degassing under vacuum four 
times. 180 g of 2-Chloroethanol is then added through the condenser at 
room temperature with stirring. This is enough 2-chloroethanol to give a 
5%-5.5% quat. The temperature is then raised to 95.degree. C. for sixteen 
hours. After sixteen hours, the reactor is cooled and the product is 
collected in a five gallon plastic bucket. A small sample is isolated in 
acetone for analysis. The Tg is 144.degree. C. (range 
122.degree.-156.degree. C.), the inherent viscosity of the quaternized 
polymer as measured at 0.25 g/dl (DMF) at 25.degree. C. using a 
Cannon-Fenske viscometer is 0.31. A nonaqueous titration performed for 
imidazole and quaternized imidazole shows 39.5 wt.% and 11.7 wt.%, 
respectively. 
The resultant solution is then acidified (pH 5.2) with 550 g of glacial 
acetic acid plus four kg of distilled water. This solution is added to 43 
kg to reduce the solids to 5% and the mixture is diafiltered using 
polysulfone permeator. 
Example 3--Photographic Test 
A multicolor, photosensitive donor element of the peel-apart type was 
prepared by coating the following layers in the order recited on an opaque 
poly(ethylene terephthalate) film support. Coverages are parenthetically 
given in g/m.sup.2. 
(1) Polymeric acid layer of poly(n-butyl acrylate-co-acrylic acid) at a 
30:70 weight ratio equivalent to 81 meq. acid/m.sup.2 ; 
(2) Interlayer of poly(ethyl acrylate-co-acrylic acid/(80:20 wt. ratio) 
coated from a latex (0.54); 
(3) Timing layer of a 1:9 physical mixture of 
poly(acrylonitrile-co-vinylidene chloride-co-acrylic acid) (weight ratio 
14:79:7) and the carboxyester-lactone formed by cyclization of a vinyl 
acetate-maleic anhydride copolymer in the presence of 1-butanol to produce 
a partial butyl ester (ratio of acid:ester of 15:85) (4.8); 
(4) A "gel-nitrate" layer (0.22) of bone gelatin and cellulose nitrate in a 
compatible solvent mixture of water, methanol and acetone (See Glafkides, 
"Photographic Chemistry", Vol. 1, Engl. Ed., page 468 (1958); 
(5) Cyan RDR (0.47), and gelatin (1.5); 
(6) Red-sensitive, negative silver chloride emulsion (0.29 Ag) and gelatin 
(0.62); 
(7) Interlayer of 2,5-didodecylhydroquinone (0.54), gelatin (1.2) and ETA 
(0.48); 
(8) Magenta RDR (0.48) and gelatin (1.0); 
(9) Green-sensitive, negative silver chloride emulsion (0.51 Ag) and 
gelatin (0.90); 
(10) Interlayer of 2,5-didodecylhydroquinone (0.54) gelatin (1.2) and ETA 
(0.48); 
(11) Yellow RDR (0.68), and gelatin (1.2); 
(12) Blue-sensitive, negative silver chloride emulsion layer (0.42 Ag) and 
gelatin (0.82); 
(13) Interlayer of 
poly[styrene-co-1-vinylimidazole-co-3-(2-hydroxyethyl)-1-vinylimidazolium 
chloride] (50:40:10 wt. ratio) (0.11) in gelatin (0.81); and 
(14) Overcoat layer of gelatin (0.89). 
##STR24## 
Dispersed in tritolyl phosphate (RDR:solvent 1:1) 
##STR25## 
Dispersed in N,N-butylacetanilide (RDR:solvent 1:2) 
##STR26## 
Dispersed in di-n-butyl phthalate (RDR:solvent 2:1) 
##STR27## 
A. A control receiving element was prepared by coating the mordant 
poly(1-vinylimidazole) (3.0 g/m.sup.2) and gelatin (3.0 g/m.sup.2), 
hardened with 1.25 percent formaldehyde, on a polyethylene-coated paper 
support which had a 0.7 g/m.sup.2 gelatin underlayer. 
B. A control receiving element similar to A was prepared except that the 
mordant was poly[1-vinylimidazole-co-3-(2-hydroxyethyl)-1-vinylimidazolium 
chloride] (mole ratio 90:10). 
C. A control element similar to A was prepared except that the mordant was 
poly(1-vinylimidazole-co-3-benzyl-1-vinylimidazolium chloride) (mole ratio 
90:10). 
D. A control element similar to A was prepared except that the mordant was 
poly(styrene-co-1-vinylimidazole) (mole ratio 50:50). 
E. A control element similar to A was prepared except that the mordant was 
poly[styrene-co-1-vinylimidazole-co-3-(2-hydroxyethyl)-1-vinylimidazolium 
chloride) (mole ratio 50:40:10). 
F. A control element similar to A was prepared except that the mordant was 
poly[styrene-co-1-vinylimidazole-co-3-benzyl-1-vinylimidazolium chloride) 
(mole ratio 50:40:10). 
G. A control element similar to A was prepared except that the mordant was 
poly(acrylonitrile-co-1-vinylimidazole) (mole ratio 54:46). 
H. A receiving element according to the invention was prepared similar to A 
except that the mordant was compound 1. 
I. A receiving element according to the invention was prepared similar to A 
except that the mordant was compound 2. 
An activator solution was prepared as follows: 
______________________________________ 
Potassium hydroxide 0.6 N 
5-Methylbenzotriazole 3.0 g/l 
11-Aminoundecanoic acid 2.0 g/l 
Potassium bromide 2.0 g/l 
Potassium sulfite 8.0 g/l 
______________________________________ 
A sample of the donor element was exposed in a sensitometer through a 
graduated density step tablet to yield a near neutral at a Status A 
density of 0.8, soaked in the activator solution described above in a 
shallow-tray processor for 15 seconds at 28.degree. C. (82.5.degree. F.) 
and then laminated between nip rollers to each of the receiving elements 
described above. After ten minutes at room temperature, 22.degree. C. 
(72.degree. F.), the donor and receiver were peeled apart. 
The Status A red, green and blue density curves were obtained by a computer 
integration of the individual step densities on the receiver. The receiver 
was then incubated under "HID fade" conditions, (2 weeks, 50 .kappa.Lux 
measured at the surface, 35.degree. C., 53 percent RH with the sample 
surface-covered with a Wratten 2B filter) and the curves were again 
obtained. The loss in density, .DELTA.D, from an original density of 1.6 
was calculated. 
For the evaluation of image sharpness, another multicolor donor was exposed 
in a sensitometer through a parallel-line resolution test chart. The 
exposure was adjusted to provide a Status A neutral density of 
approximately 1.8. The exposed donor was soaked in the activator solution 
described above in a shallow-tray processor for 15 seconds at 28.degree. 
C. (82.5.degree. F.) and ten laminated between nip-rollers to a sample of 
the receiving elements described above. After 10 minutes at room 
temperature, the donor and receiver were separated. 
The highest resolution of the test chart image on the "fresh" transfer for 
which discrete lines were distinguishable (as lines/mm) was determined by 
visual observation using a 10X magnifier. The receiver was then hung in a 
sealed chamber containing an open reservoir of hot (ca. 70.degree. C.) 
water for 13 hours (this was to provide 100 percent RH in the chamber, the 
temperature of the water was allowed to gradually decrease to room 
temperature over this time). The resolution of the test object was again 
visually evaluated and compared to the original to estimate the relative 
image smear. A receiver having high resolution both initially and after 
incubation would have no image smear and would be highly desirable. Thus, 
the higher the resolution number after incubation, the better the mordant 
is. (Note: these test conditions are useful to compare image sharpness 
only in a relative sense; both this sharpness test and the dye-light 
stability test represent severe accelerated testing designed to detect 
differences). The following results were obtained: 
TABLE 1 
__________________________________________________________________________ 
##STR28## 
Resolu- 
tion Test 
Initial/ 
Dye Loss Upon 
Incubated 
Re- Mor- w:x:y:z 
D.sub.max /D.sub.min 
Incubation .DELTA.D 
(lines/ 
ceiver 
dant 
A Q (mole %) 
R G B R G B mm) 
__________________________________________________________________________ 
A C-1 -- -- 0:0:100:0 
3.0/ 
2.7/ 
2.7 
0.19 
0.16 
0.16 
11/0 
0.14 
0.15 
0.18 
B C-2 -- CH.sub.2CH.sub.2 OH 
0:0:90:10 
3.0/ 
2.7/ 
2.7/ 
0.24 
0.23 
0.18 
13/0 
0.13 
0.13 
0.16 
C C-3 -- CH.sub.2C.sub.6 H.sub.5 
0:0:90:10 
3.0/ 
2.7/ 
2.7/ 
0.33 
0.41 
0.21 
13/6 
0.13 
0.13 
0.16 
D C-4 polym. 
-- 50:0:50:0 
2.5/ 
2.4/ 
2.3/ 
0.30 
0.39 
0.19 
11/8 
styrene 0.10 
0.11 
0.11 
E C-5 polym. 
CH.sub.2CH.sub.2 OH 
50:0:40:10 
2.9/ 
2.7/ 
2.0/ 
0.38 
0.51 
0.31 
14/13 
styrene 0.16 
0.12 
0.16 
F C-6 polym. 
CH.sub.2C.sub.6 H.sub.5 
50:0:40:10 
2.9/ 
2.6/ 
2.6 
0.46 
0.61 
0.34 
14/14 
styrene 0.15 
0.12 
0.16 
0.46 
0.61 
0.34 
14/14 
G C-7 -- -- 0:54:46:0 
2.7/ 
2.5/ 
2.4/ 
0.23 
0.23 
0.17 
11/6 
0.11 
0.09 
0.13 
H Cmpd 
-- CH.sub.2CH.sub.2 OH 
0:56:40:4 
2.9/ 
2.6/ 
2.6/ 
0.19 
0.20 
0.15 
14/8 
1 0.13 
0.11 
0.16 
I Cmpd 
-- CH.sub.2CH.sub.2 OH 
0:82:15:3 
2.7/ 
2.5/ 
2.5/ 
0.20 
0.20 
0.17 
13/11 
2 0.13 
0.11 
0.16 
__________________________________________________________________________ 
The above results indicate that control receiving elements A and B had 
relatively good dye-light stability, but the image smear as measured by 
the resolution test was very severe (going from 11 and 13 to 0). In 
control receiver element C, partial benzyl chloride quaternization of the 
poly(1-vinylimidazole) improved image sharpness somewhat (going from 0 to 
6 after incubation), but this was at the expense of dye-light stability. 
In control receiver D, the image smear was good, but again, this was at the 
expense of dye-light stability. The D.sub.max 's also tended to be low. 
In control receiver E and F, partial quaternization with either 
chloroethanol or benzyl chloride produced mordants with good initial image 
sharpness which did not smear under conditions of high humidity. These 
mordants, however, had inferior dye-light stability. 
In control receiver G, the dye-light stability was good, but the image 
sharpness was only fair. 
The receiving elements containing the mordants of the invention had both 
good or excellent image sharpness and excellent dye-light stability. 
Example 4--Photographic Test 
J. A receiving element according to the invention was prepared similar to A 
in Example 3 except that the mordant was Compound 3. 
A sample of receiving element G in Example 3 was used as the control. 
Processing was the same as in Example 3 along with an additional 
fluorescent light fade test. These fade test conditions were for 6 weeks, 
5.4 kLux cool-white fluorescent, 22.degree. C. and 84% RH. The loss in 
density, .DELTA.D, from an original density of 1.6 was calculated. The 
following results were obtained: 
TABLE 2 
__________________________________________________________________________ 
##STR29## 
Resolu- 
tion Test 
Fluorescent 
Initial/ 
Dye Loss Upon 
Dye Loss Upon 
Incubated 
Re- Mor- D.sub.max /D.sub.min 
Incubation .DELTA.D 
Incubation .DELTA.D 
(lines/ 
ceiver 
dant 
x:y:z 
R G B R G B R G B mm) 
__________________________________________________________________________ 
G C-7 54:46:0 
2.6/ 
2.3/ 
2.4/ 
0.22 
0.26 
0.23 
0.25 
0.15 
0.12 
11/6 
0.09 
0.09 
0.11 
J Cmpd 
56:37:7 
2.9/ 
2.6/ 
2.7/ 
0.23 
0.28 
0.23 
0.13 
0.09 
0.11 
14/13 
3 0.11 
0.10 
0.16 
__________________________________________________________________________ 
The above results indicate that the receiver containing a mordant according 
to the invention had superior initial sharpness and lost very little under 
high humidity incubation conditions. It also had improved dye-light 
stability at high humidity fluorescent testing, and retained acceptable 
dye-light stability under high intensity testing conditions as compared to 
the control receiver with no quarternized component in the mordant. 
Example 5--Photographic Test 
K. A control receiving element was prepared similar to A in Example 3 
except that the mordant was poly(acrylonitrile-co-1-vinylimidazole) (mole 
ratio 65:35). 
L. A control receiving element was prepared similar to A in Example 3 
except that the mordant was 
poly[acrylonitrile-co-1-vinylimidazole-co-3-(2,3-dihydroxypropyl)-1-vinyli 
midazolium chloride] (mole ratio 66:24:10). 
M. A control element was prepared similar to L) except that the mole ratio 
was 67:19:14. 
N. A receiving element according to the invention was prepared similar to A 
in Example 3 except that the mordant was Compound 4. 
O. A receiving element according to the invention was prepared similar to A 
in Example 3 except that the mordant was Compound 5. 
P. A receiving element according to the invention was prepared similar to A 
in Example 3 except that the mordant was Compound 6. 
Q. A receiving element according to the invention was prepared similar to A 
in Example 3 except that the mordant was Compound 7. 
Processing was the same as in Example 3 with the following results: 
TABLE 3 
______________________________________ 
##STR30## 
Re- Dye Loss Upon 
ceiv- 
Mor- D.sub.max /D.sub.min 
Incubation WD 
er dant w:x:y:z R G B R G B 
______________________________________ 
K C-8 0:65:35:0 2.4/ 2.3/ 2.3/ 0.33 0.24 0.18 
0.13 0.11 0.16 
L C-9 0:66:24:10 
3.0/ 2.7/ 2.7/ 0.53 0.43 0.28 
0.16 0.13 0.18 
M C-10 0:67:19:14 
3.0/ 2.7/ 2.8/ 0.60 0.58 0.26 
0.17 0.13 0.18 
N Cmpd 8:50:40:2 2.6/ 2.6/ 2.6/ 0.21 0.23 0.17 
4 0.11 0.11 0.12 
O Cmpd 8:49:39:4 2.8/ 2.7/ 2.7/ 0.24 0.24 0.18 
5 0.12 0.11 0.13 
P Cmpd 8:48:39:5 2.8/ 2.7/ 2.8/ 0.26 0.26 0.19 
6 0.13 0.11 0.14 
Q Cmpd 8:47:38:7 2.9/ 2.8/ 2.9/ 0.30 0.30 0.20 
7 0.14 0.13 0.15 
______________________________________ 
The above results indicate that the control receivers L and M with high 
quaternization of the imidazole produced poor dye-light stability and high 
D.sub.min. Although control receiver K with the non-quaternized mordant had 
acceptable D.sub.min and dye-light stability, related control mordants 1 
and 7, receivers A and G in Example 3 and control mordant 7, receiver G, 
in Example 4 produced characteristic high image smear. 
The receiver containing mordants according to the invention all had 
superior dye-light stability as compared to control receivers L and M. The 
dye-light stability progressively decreased and the D.sub.min increased 
with increasing quaternization. The data illustrates the necessity for 
maintaining quaternization below 10 mole percent. 
Example 6--Photographic Test 
A sample of receiving element E in Example 3 was used as the control. 
R. A receiving element according to the invention was prepared similar to A 
in Example 3 except that the mordant was compound 8. 
S. A receiving element according to the invention was prepared similar to A 
in Example 3 except that the mordant was compound 9. 
T. A receiving element according to the invention was prepared similar to A 
in Example 3 except that the mordant was compound 10. 
Processing was the same as in Example 4 with the following results: 
TABLE 4 
__________________________________________________________________________ 
##STR31## 
__________________________________________________________________________ 
w:x:y:z 
Receiver 
Mordant 
A Q X (mole 
__________________________________________________________________________ 
%) 
E C-5 polym. styrene CH.sub.2 CH.sub.2 OH 
Cl.sup..crclbar. 
48:0:43:9 
R Cmpd 8 
##STR32## 
##STR33## CH.sub.3 SO.sub.3.sup..crclbar 
. 22:44:29:5 
S Cmpd 9 
##STR34## CH.sub.2 CH.sub.2 OH 
Cl.sup..crclbar. 
8:44:39:9 
T Cmpd 10 
##STR35## CH.sub.2 CH.sub.2 OH 
Cl.sup..crclbar. 
9:50:36:5 
__________________________________________________________________________ 
Resolu- 
tion Test 
Fluorescent Initial/ 
Dye Loss Upon Dye Loss Upon 
Incubated 
D.sub.max /D.sub.min 
Incubation .DELTA.D 
Incubation .DELTA.D 
(lines/ 
Receiver 
R G B R G B R G B mm) 
__________________________________________________________________________ 
E 3.0/ 
2.7/ 2.7/ 
0.48 0.58 
0.39 0.24 
0.18 0.13 
14/14 
0.11 
0.09 0.13 
R 2.6/ 
2.5/ 2.4/ 
0.43 0.55 
0.31 0.20 
0.15 0.10 
13/11 
0.11 
0.09 0.13 
E 3.0/ 
2.8/ 2.7/ 
0.43 0.51 
0.34 0.29 
0.22 0.13 
14/14 
0.13 
0.11 0.15 
S 3.0/ 
2.7/ 2.7/ 
0.33 0.39 
0.25 0.16 
0.14 0.09 
14/14 
0.13 
0.11 0.17 
E 2.9/ 
2.7/ 2.6/ 
0.38 0.51 
0.31 0.28 
0.21 0.13 
14/13 
0.16 
0.12 0.16 
T 2.9/ 
2.6/ 2.7/ 
0.23 0.20 
0.16 0.20 
0.09 0.10 
13/11 
0.13 
0.11 0.16 
__________________________________________________________________________ 
The above results indicate that the receivers containing the mordants 
according to the invention had improved stability for all three dyes as 
compared to a control under both high intensity daylight and fluorescent 
fade conditions. All three mordants of the invention gave sharp initial 
images that did not undergo severe image smearing upon incubation. The 
mordant polymers of the invention thus had the best balance of desirable 
properties. 
Example 7--Photographic Test 
A sample of receiving element E in Example 3 was used as the control 
U. A receiving element according to the invention was prepared similar to A 
in Example 3 except that the mordant was compound 11. 
V. A receiving element according to the invention was prepared similar to A 
in Example 3 except that the mordant was compound 12. 
W. A receiving element according to the invention was prepared similar to A 
in Example 3 except that the mordant was compound 13. 
Processing was the same as in Example 4 with the following results: 
TABLE 5 
__________________________________________________________________________ 
##STR36## 
__________________________________________________________________________ 
w:x:y:z 
Receiver 
Mordant 
A Q (mole %) 
__________________________________________________________________________ 
E C-5 
##STR37## CH.sub.2 CH.sub.2 OH 50:0:40:10 
U V W 
Cmpd 11 Cmpd 12 Cmpd 13 
##STR38## 
##STR39## 8:52:35:5 8:52:32:8 8:52:32:8 
__________________________________________________________________________ 
Resolu- 
tion Test 
Fluorescent Initial/ 
Dye Loss Upon 
Dye Loss Upon 
Incubated 
D.sub.max /D.sub.min 
Incubation .DELTA.D 
Incubation .DELTA.D 
(lines/ 
Receiver 
R G B R G B R G B mm) 
__________________________________________________________________________ 
E 3.0/ 
2.7/ 
2.7/ 
0.48 
0.58 
0.39 
0.24 
0.18 
0.13 
14/14 
0.11 
0.09 
0.13 
U 2.9/ 
2.7/ 
2.7/ 
0.34 
0.43 
0.27 
0.18 
0.13 
0.09 
13/13 
0.12 
0.08 
0.15 
V 3.0/ 
2.7/ 
2.7/ 
0.38 
0.47 
0.28 
0.14 
0.11 
0.08 
14/13 
0.10 
0.08 
0.16 
W 2.9/ 
2.7/ 
2.4/ 
0.37 
0.40 
0.26 
0.15 
0.10 
0.07 
14/13 
0.12 
0.11 
0.13 
__________________________________________________________________________ 
The above results indicate that the receivers containing the mordants 
according to the invention had improved stability for all three dyes as 
compared to the control under both high intensity daylight and fluorescent 
fade conditions. All three mordants of the invention also gave sharp 
initial images that did not smear appreciably upon incubation. 
The invention has been described in detail with particular reference to 
preferred embodiments thereof, but it will be understood that variations 
and modifications can be effected within the spirit and scope of the 
invention.