Dry photographic process

Claim 2

PROCESS FOR FORMING AN IMAGE CORRESPONDING TO AN OBJECT TO BE REPRODUCED, WHICH OPERATES IN THE ABSENCE OF LIQUID REAGENTS, COMPRISING PROVIDING A FIRST, CONTINUOUS LAYER FREE OF SUBSTANTIAL DISCRETE VOIDS AND OF VARYING PERMEABILITIES TO GAS WHEREBY SAID GAS DIFFUSES READILY THROUGH NON-IMAGE AREAS OF SAID FIRST LAYER AN DIS OBSTRUCTED AGAINST PASSAGE TO VARYING DEGREES THROUGH SAID IMAGE AREAS THEREOF, PROVIDING A SECOND, IMAGE-RECEIVING, LAYER WHICH CONTAINS A MATERIAL WHICH SIS CONVERTED TO A VISIBLE CONDITION BY CONTACT WITH SAID GAS, SUPERPOSING SAID FIRST AND SECOND LAYER, CAUSING SAID GAS TO PASS THROUGH PERMEABLE PROTIONS OF SAID FIRST LAYER TO SAID SUPERPOSED SECOND LAYER, AND PERMITTING THE GAS TO CONVERT THE MATERIAL IN THE SECOND LAYER TO VISIBLE CONDITION.

Claim 3

PROCESS FOR FORMING AN IMAGE CORRESPONDING TO AN OBJECT TO BE REPRODUCED, WHICH OPERATES IN THE ABSENCES OF LIQUID REAGENTS, COMPRISING PROVIDING A FIRST, CONTINUOUS LAYER FREE OF SUBSTANTIAL DISCRETE VOIDS AND OF VARYING PERMEABILITIES TO GAS WHEREBY SAID GAS DIFFUSES READILY THROUGH NON-IMAGE AREAS OF SAID FIRST LAYER AND IS OBSTRUECTED AGAINST PASSAGE TO VARYING DEGREES THROUGH IMAGE AREAS THEREOF, PROVIDING A SECOND, IMAGE-RECEIVING, LAYER WHICH CONTAINS A MATERIAL FROM THE GROUP CONSISTING OF MERCURY COMPOUNDS, SILVER COMPOUNDS SULFUR, GOLD CHLORIDE, YELLOW LEAD OXIDE, REDUCED FLUORESCEIN, SILVER METAL, P-METHYLAMINO PHENOL AND P-PHENHLENE DIAMINE, WHICH IS CONVERTED TO A VISIBLE CONDITION BY CONTACT WITH SAID GAS, SUPERPOSING SAID FIRST AND SAID SECOND LAYER, CAUSING SAID GAS TO PASS THROUGH PERMEABLE PORTIONS OF SAID FIRST LAYER TO SAID SUPERPOSED SECOND LAYER, AND PERMITTING THE GAS TO CONVERT THE MATERIAL IN THE SECOND LAYER TO VISIBLE CONDITION.

Claim 4

PROCESS FOR FORMING AN IMAGE CORRESPONDING TO AN OBJECT TO BE REPRODUCED, WHICH OPERATES IN THE ABSENCES OF LIQUID REAGENTS, COMPRISING PROVIDING A FIRST, CONTINUOUS LAYER FREE OF SUBSTANTIAL DISCRETE VOIDS AND OF VARYING PERMEABILITIES TO GAS WHEREBY SAID GAS DIFFUSES READILY THROUGH NON-IMAGE AREAS OF SAID FIRST LAYER AND IS OBSTRUECTED AGAINST PASSAGE TO VARYING DEGREES THROUGH IMAGE AREAS THEREOF, PROVIDING A SECOND, IMAGE-RECEIVING, LAYER WHICH CONTAINS A MATERIAL FROM THE GROUP CONSISTING OF MERCURY COMPOUNDS, SILVER COMPOUNDS SULFUR, GOLD CHLORIDE, YELLOW LEAD OXIDE, REDUCED FLUORESCEIN, SILVER METAL, P-METHYLAMINO PHENOL AND P-PHENHLENE DIAMINE, WHICH IS CONVERTED TO A VISIBLE CONDITION BY CONTACT WITH SAID GAS, SUPERPOSING SAID FIRST AND SAID SECOND LAYER, CAUSING SAID GAS TO PASS THROUGH PERMEABLE PORTIONS OF SAID FIRST LAYER TO SAID SUPERPOSED SECOND LAYER, AND PERMITTING THE GAS TO CONVERT THE MATERIAL IN THE SECOND LAYER TO VISIBLE CONDITION.