High chloride silver halide emulsion internally doped with cadmium, lead, copper, zinc or mixtures thereof

Claim 2

A silver halide emulsion of the developing out type comprised of silver halide grains which are at least 80 mole percent silver chloride and less than 5 mole percent silver iodide, based on total silver halide, said silver halide grains being internally doped with cadmium, lead, copper, zinc or mixtures thereof in a speed increas-ing amount of up to 7 X 10-5 mole per mole of silver halide.

Claim 3

A silver halide emulsion of the developing out type comprised of silver halide grains which are at least 80 mole percent silver chloride and less than 5 mole percent silver iodide, based on total silver halide, said silver halide grains being formed in the presence of cadmium, lead, copper, zinc or mixtures thereof in a concentration of from 2 X 10-6 to 7 X 10-5 mole per mole of silver halide.

Claim 4

A silver halide emulsion of the developing out type comprised of silver halide grains which are at least 80 mole percent silver chloride and less than 5 mole percent silver iodide, based on total silver halide, said silver halide grains being formed in the presence of cadmium, lead, copper, zinc or mixtures thereof in a concentration of from 2 X 10-6 to 7 X 10-5 mole per mole of silver halide.

Claim 5

A silver halide emulsion according to claim 1 in which said silver halide grains consist essentially of silver chloride.

Claim 6

A silver halide emulsion according to claim 1, 2 or 3, in which said silver halide grains are formed in the presence of cadmium, zinc or mixtures thereof in a concentration of from 3 X 10-6 to 6 X 10-5 mole per mole of silver halide.

Claim 7

A silver halide emulsion according to claim 1, 2 or 3, in which said silver halide grains are formed in the presence of lead, copper or mixtures thereof in a concentration of from 3 X 10-6 to 5 X 10-5 mole per mole of silver halide.

Claim 8

A silver halide emulsion according to claim 1, 2 or 3, in which said silver halide grains are substan-tially monodispersed.

Claim 9

A silver halide emulsion according to claim 1, 2 or 3, in which said silver halide grains are gold sensitized.

Claim 10

A silver halide emulsion according to claim 1, 2 or 3, in which said silver halide grains are sulfur and gold sensitized.

Claim 11

In a photographic element of the developing out type comprised of a support and, coated on said support, a silver halide emulsion layer, the improvement comprising said silver halide emulsion layer being comprised of silver halide grains which are at least 80 mole percent silver chloride and less than 5 mole percent silver iodide, based on total silver halide, said silver halide grains being internally doped with cadmium, lead, copper, zinc or mixtures thereof in a speed increasing amount of up to 7 X 10-5 mole per mole of silver halide.

Claim 12

In a photographic element of the developing out type comprised of a support and, coated on said support, a silver halide emulsion layer, the improvement comprising said silver halide emulsion layer being comprised of silver halide grains which are at least 80 mole percent silver chloride and less than 5 mole percent silver iodide, based on total silver halide, said silver halide grains being internally doped with cadmium, lead, copper, zinc or mixtures thereof in a speed increasing amount of up to 7 X 10-5 mole per mole of silver halide.

Claim 13

In a photographic element of the developing out type comprised of a support and, coated on said support, a silver halide emulsion layer, the improvement comprising said silver halide emulsion layer being comprised of silver halide grains which are at least 80 mole percent silver chloride and less than 5 mole percent silver iodide, based on total silver halide, said silver halide grains being formed in the presence of cadmium, lead, copper, zinc or mixtures thereof, in concentrations of from 2 X 10-6 to 7 X 10-5 mole per mole of silver halide.

Claim 14

In a photographic element of the developing out type comprised of a support and, coated on said support, a silver halide emulsion layer, the improvement comprising said silver halide emulsion layer being comprised of silver halide grains which are at least 80 mole percent silver chloride and less than 5 mole percent silver iodide, based on total silver halide, said silver halide grains being formed in the presence of cadmium, lead, copper, zinc or mixtures thereof, in concentrations of from 2 X 10-6 to 7 X 10-5 mole per mole of silver halide.

Claim 15

In a photographic element of the developing out type comprised of a support and, coated on said support, a silver halide emulsion layer, the improvement comprising said silver halide emulsion layer being comprised of a gelatino-silver halide emulsion containing gold sensi-tized silver halide grains which consist essentially of at least 90 mole percent silver chloride and less than 2 mole percent silver iodide, based on total silver halide, formed in the presence of cadmium in a concentration of from 2 X 10-6 to 7 X 10-5 mole per mole of silver halide.

Claim 16

In a photographic element of the developing out type comprised of a support and, coated on said support, a silver halide emulsion layer, the improvement comprising said silver halide emulsion layer being comprised of a gelatino-silver halide emulsion containing gold sensi-tized silver halide grains which consist essentially of at least 90 mole percent silver chloride and less than 2 mole percent silver iodide, based on total silver halide, formed in the presence of cadmium in a concentration of from 2 X 10-6 to 7 X 10-5 mole per mole of silver halide.

Claim 17

In a photographic element of the developing out type comprised of a support and, coated on said support, a silver halide emulsion layer, the improvement comprising said silver halide emulsion layer being comprised of a gelatino-silver halide emulsion containing gold sensitized silver halide grains which consist essentially of at least 90 mole percent silver chloride and less than 2 mole percent silver iodide, based on total silver halide, formed in the presence of zinc in a concentration of from 2 X 10-6 to 7 X 10-5 mole per mole of silver halide.

Claim 18

In a photographic element of the developing out type comprised of a support and, coated on said support, a silver halide emulsion layer, the improvement comprising said silver halide emulsion layer being comprised of a gelatino-silver halide emulsion containing gold sensitized silver halide grains which consist essentially of at least 90 mole percent silver chloride and less than 2 mole percent silver iodide, based on total silver halide, formed in the presence of zinc in a concentration of from 2 X 10-6 to 7 X 10-5 mole per mole of silver halide.

Claim 19

In a photographic element according to claim 11 or 12 the further improvement in which said silver halide grains are formed in the presence of from 5 X 10-6 to 2.5 X 10-5 mole zinc or cadmium per mole of silver halide.

Claim 20

In a photographic element of the developing out type comprised of a support and, coated on said support, a silver halide emulsion layer, the improvement comprising said silver halide emulsion layer being comprised of a gelatino-silver halide emulsion containing gold sensi-tized silver halide grains which consist essentially of at least 90 mole percent silver chloride and less than 2 mole percent silver iodide, based on total silver halide, formed in the presence of lead in a concentration of from 2 X 10-6 to 7 X 10-5 mole per mole of silver halide.

Claim 21

In a photographic element of the developing out type comprised of a support and, coated on said support, a silver halide emulsion layer, the improvement comprising said silver halide emulsion layer being comprised of a gelatino-silver halide emulsion containing gold sensi-tized silver halide grains which consist essentially of at least 90 mole percent silver chloride and less than 2 mole percent silver iodide, based on total silver halide, formed in the presence of lead in a concentration of from 2 X 10-6 to 7 X 10-5 mole per mole of silver halide.

Claim 22

In a photographic element of the developing out type comprised of a support and, coated on said support, a silver halide emulsion layer, the improvement comprising said silver halide emulsion layer being comprised of a gelatino-silver halide emulsion containing gold sensi-tized silver halide grains which consist essentially of at least 90 mole percent silver chloride and less than 2 mole percent silver iodide, based on total silver halide, formed in the presence of copper in a concentration of from 2 X 10-6 to 7 X 10-5 mole per mole of silver halide.

Claim 23

In a photographic element of the developing out type comprised of a support and, coated on said support, a silver halide emulsion layer, the improvement comprising said silver halide emulsion layer being comprised of a gelatino-silver halide emulsion containing gold sensi-tized silver halide grains which consist essentially of at least 90 mole percent silver chloride and less than 2 mole percent silver iodide, based on total silver halide, formed in the presence of copper in a concentration of from 2 X 10-6 to 7 X 10-5 mole per mole of silver halide.

Claim 24

In a photographic element according to claim 14 or 15 the further improvement in which said silver halide grains are formed in the presence of from 8 X 10-6 to 2 X 10-5 mole lead or copper per mole of silver halide.

Claim 25

In a photographic element according to claim 11 or 12 the further improvement in which said support is a transparent film support or a reflective paper support.

Claim 26

In a photographic element according to claim 14 or 15 the further improvement in which said support is a trans-parent film support or a reflective paper support.

Claim 27

19 . In a photographic element of the developing out type capable of producing multicolor dye images com-prised of a support and, coated on said support, at least three superimposed color-forming layer units, one of said layer units containing a blue responsive silver halide emulsion and a yellow image dye providing means, a second of said layer units containing a green responsive silver halide emulsion and a magenta image dye providing means and a third of said layer units containing a red responsive sil-ver halide emulsion and a cyan image dye providing means, the improvement comprising at least one of said silver halide emulsions being comprised of silver halide grains which are at least 80 mole percent silver chloride and less than 5 mole percent iodide, based on total silver halide, said silver halide grains being formed in the presence of cadmium, lead, copper, zinc or mixtures thereof, in a concentration of from 2 X 10-6 to 7 X 10-5 mole per mole of silver halide.

Claim 28

19 . In a photographic element of the developing out type capable of producing multicolor dye images com-prised of a support and, coated on said support, at least three superimposed color-forming layer units, one of said layer units containing a blue responsive silver halide emulsion and a yellow image dye providing means, a second of said layer units containing a green responsive silver halide emulsion and a magenta image dye providing means and a third of said layer units containing a red responsive sil-ver halide emulsion and a cyan image dye providing means, the improvement comprising at least one of said silver halide emulsions being comprised of silver halide grains which are at least 80 mole percent silver chloride and less than 5 mole percent iodide, based on total silver halide, said silver halide grains being formed in the presence of cadmium, lead, copper, zinc or mixtures thereof, in a concentration of from 2 X 10-6 to 7 X 10-5 mole per mole of silver halide.

Claim 29

20 . In a photographic element capable of forming a multicolor dye image according to claim 19 the further improvement in which the photographic element forms a part of a multicolor image transfer system.

Claim 30

In a photographic element capable of forming a multicolor dye image according to claim19 or 20 the further improvement in which said silver halide emulsions consist essentially of silver chloride.

Claim 31

In a process of forming a silver halide emulsion of the developing out type by reacting a water soluble silver salt with one or more water soluble halide salts in an aqueous medium containing a peptizer to form radiation-sensitive silver halide grains, the improvement comprising forming silver halide grains which are at least 80 mole percent silver chloride and less than 5 mole percent iodide, based on total silver halide, and introducing into the aqueous medium during formation of the silver halide grains cadmium, lead, copper, zinc or mixtures thereof, in a total concentration of from 2 X 10-6 to 7 X 10-5 mole per mole of silver halide.

Claim 32

In a process of forming a silver halide emulsion of the developing out type by reacting a water soluble silver salt with one or more water soluble halide salts in an aqueous medium containing a peptizer to form radiation-sensitive silver halide grains, the improvement comprising forming silver halide grains which are at least 80 mole percent silver chloride and less than 5 mole percent iodide, based on total silver halide, and introducing into the aqueous medium during formation of the silver halide grains cadmium, lead, copper, zinc or mixtures thereof, in a total concentration of from 2 X 10-6 to 7 X 10-5 mole per mole of silver halide.

Claim 33

In a process of forming a silver halide emulsion of the developing out type by a double-jet precipi-tation process in which an aqueous silver salt and at least one aqueous halide salt are separately and concurrently introduced into a reaction vessel in the presence of a gelatin or gelatin derived peptizer to form radiation-sensitive silver halide grains and surface chemically sensitizing the silver halide grains with a gold sensitizer, the improvement comprising forming silver halide grains which are at least 90 mole percent silver chloride and less than 2 mole percent silver iodide, based on total silver halide, and introducing into the reaction vessel after silver halide grain nuclei have been formed and prior to introduction of at least 85 percent of the silver salt solution from 3 X 10-6 to 6 X 10-5 mole cadmium per mole of silver halide in the form of a water soluble cadmium salt.

Claim 34

In a process of forming a silver halide emulsion of the developing out type by a double-jet precipi-tation process in which an aqueous silver salt and at least one aqueous halide salt are separately and concurrently introduced into a reaction vessel in the presence of a gelatin or gelatin derived peptizer to form radiation-sensitive silver halide grains and surface chemically sensitizing the silver halide grains with a gold sensitizer, the improvement comprising forming silver halide grains which are at least 90 mole percent silver chloride and less than 2 mole percent silver iodide, based on total silver halide, and introducing into the reaction vessel after silver halide grain nuclei have been formed and prior to introduction of at least 85 percent of the silver salt solution from 3 X 10-6 to 6 X 10-5 mole cadmium per mole of silver halide in the form of a water soluble cadmium salt.

Claim 35

In a process of forming a silver halide emulsion of the developing out type by a double-jet precipi-tation process in which an aqueous silver salt and at least one aqueous halide salt are separately and concurrently introduced into a reaction vessel in the presence of a gelatin or gelatin derived peptizer to form radiation-sensitive silver halide grains and surface chemically sensitizing the silver halide grains with a gold sensitizer, the improvement comprising forming silver halide grains which are at least 90 mole percent silver chloride and less than 2 mole percent silver iodide, based on total silver halide, and introducing into the reaction vessel after silver halide grain nuclei have been formed and prior to introduction of at least 85 percent of the silver salt solution from 3 X 10-6 to 6 X 10-5 mole zinc per mole of silver halide in the form of a water soluble zinc salt.

Claim 36

In a process of forming a silver halide emulsion of the developing out type by a double-jet precipi-tation process in which an aqueous silver salt and at least one aqueous halide salt are separately and concurrently introduced into a reaction vessel in the presence of a gelatin or gelatin derived peptizer to form radiation-sensitive silver halide grains and surface chemically sensitizing the silver halide grains with a gold sensitizer, the improvement comprising forming silver halide grains which are at least 90 mole percent silver chloride and less than 2 mole percent silver iodide, based on total silver halide, and introducing into the reaction vessel after silver halide grain nuclei have been formed and prior to introduction of at least 85 percent of the silver salt solution from 3 X 10-6 to 6 X 10-5 mole zinc per mole of silver halide in the form of a water soluble zinc salt.

Claim 37

In a process of forming a silver halide emulsion of the developing out type by a double-jet precipi-tation process in which an aqueous silver salt and at least one aqueous halide salt are separately and concurrently introduced into a reaction vessel in the presence of a gelatin or gelatin derived peptizer to form radiation-sensitive silver halide grains and surface chemically sensitizing the silver halide grains with a gold sensitizer, the improvement comprising forming silver halide grains which are at least 90 mole percent silver chloride and less than 2 mole percent silver iodide, based on total silver halide, and introducing into the reaction vessel after silver halide grain nuclei have been formed and prior to introduction of at least 85 percent of the silver salt solution from 3 X 10-6 to 5 X 10-5 mole lead per mole of silver halide in the form of a water soluble lead salt.

Claim 38

In a process of forming a silver halide emulsion of the developing out type by a double-jet precipi-tation process in which an aqueous silver salt and at least one aqueous halide salt are separately and concurrently introduced into a reaction vessel in the presence of a gelatin or gelatin derived peptizer to form radiation-sensitive silver halide grains and surface chemically sensitizing the silver halide grains with a gold sensitizer, the improvement comprising forming silver halide grains which are at least 90 mole percent silver chloride and less than 2 mole percent silver iodide, based on total silver halide, and introducing into the reaction vessel after silver halide grain nuclei have been formed and prior to introduction of at least 85 percent of the silver salt solution from 3 X 10-6 to 5 X 10-5 mole lead per mole of silver halide in the form of a water soluble lead salt.

Claim 39

In a process of forming a negative-working silver halide emulsion of the developing out type by a double-jet precipitation process in which an aqueous silver salt and at least one aqueous halide salt are separately and concurrently introduced into a reaction vessel in the presence of a gelatin or gelatin derived peptizer to form radiation-sensitive silver halide grains and surface chemically sensitizing the silver halide grains with a gold sensitizer, the improvement comprising forming silver halide grains which are at least 90 mole percent silver chloride and less than 2 mole percent silver iodide, based on total silver halide, and introducing into the reaction vessel after silver halide grain nuclei have been formed and prior to introduction of at least 85 percent of the silver salt solution from 3 X 10-6 to 5 X 10-5 mole copper per mole of silver halide in the form of a water soluble copper salt.

Claim 40

In a process of forming a negative-working silver halide emulsion of the developing out type by a double-jet precipitation process in which an aqueous silver salt and at least one aqueous halide salt are separately and concurrently introduced into a reaction vessel in the presence of a gelatin or gelatin derived peptizer to form radiation-sensitive silver halide grains and surface chemically sensitizing the silver halide grains with a gold sensitizer, the improvement comprising forming silver halide grains which are at least 90 mole percent silver chloride and less than 2 mole percent silver iodide, based on total silver halide, and introducing into the reaction vessel after silver halide grain nuclei have been formed and prior to introduction of at least 85 percent of the silver salt solution from 3 X 10-6 to 5 X 10-5 mole copper per mole of silver halide in the form of a water soluble copper salt.

Claim 41

In a process according to claim 22, 23 or 24 the further improvement in which silver halide grains are formed which consist essentially of silver chloride.

Claim 42

In a process according to claim 25 or 26 the further improvement in which silver halide grains are formed which consist essentially of silver chloride.

Claim 43

In a process according to claim 22, 23 or 24 the further improvement in which a thioether or thiocyanate ripen-ing agent is present during formation of the silver halide grains.

Claim 44

In a process according to claim 25 or 26 the further improvement in which a thioether or thiocyanate ripening agent is present during formation of the silver halide grains.

Claim 45

In a process according to claim 22, 23 or 24 the further improvement in which the rates of addition of the water soluble silver and halide salts are controlled to produce a monodispersed silver halide emulsion.

Claim 46

In a process according to claim 25 or 25 the further improvement in which the rates of addition of the water soluble silver and halide salts are controlled to produced a monodispersed silver halide emulsion.