-
公开(公告)号：US3620742A
公开(公告)日：1971-11-16
申请号：US3620742D
申请日：1969-01-24
Applicant: AGFA GEVAERT NV
Inventor： WILLEMS JOZEF FRANS , NOE ROBERT JOSEPH , VANHEERTUM JOHANNES JOSEPHUS , PAESSCHEN AUGUST JEAN VAN
Abstract: Electrophotographic materials wherein the photoconductive layer comprises a dihydroquinoline polymer.
-
公开(公告)号：US3615620A
公开(公告)日：1971-10-26
申请号：US3615620D
申请日：1967-12-07
Applicant: AGFA GEVAERT NV
Abstract: A light-sensitive material comprising a silver halide emulsion layer containing a mercury (II) oxide is described. The mercury (II) oxide stabilizes the emulsion against any increase in fog without substantial desensitization of the emulsion.
-
公开(公告)号：US3615616A
公开(公告)日：1971-10-26
申请号：US3615616D
申请日：1968-10-02
Applicant: AGFA GEVAERT NV
Inventor： WILLEMS JOZEF FRANS , HEUGEBAERT FRANS CLEMENT
IPC: G03C1/34
CPC classification number: G03C1/34
Abstract: Photographic materials comprising a light-sensitive silver halide emulsion layer having in the emulsion layer or in an adjacent water-permeable layer a bisterazole compound having the formula: WHERE A stands for a chemical bond or a bivalent organic radical are described. These photographic materials have decreased fogging even under conditions of high temperature and humidity.
-
公开(公告)号：US3600165A
公开(公告)日：1971-08-17
申请号：US3600165D
申请日：1969-12-30
Applicant: AGFA GEVAERT NV
Inventor： WILLEMS JOZEF FRANS , POOT ALBERT LUCIEN , NOE ROBERT JOSEPH
CPC classification number: G03G5/0662 , C09B26/02 , C09B57/10 , G03G5/0539 , G03G5/0542 , G03G5/0546 , G03G5/056 , G03G5/0564 , G03G5/0567 , G03G5/0661 , G03G5/09 , G03G5/12
Abstract: AN IMPROVED PHOTOCONDUCTIVE MATERIAL FOR USE IN PHOTOCONDUCTIVE RECORDING ELEMENTS IS OBTAINED BY TREATING A CONVENTIONAL INORGANIC METALLIC PHOTOCONDUCTIVE COMPOUND WITH A SMALL AMOUNT OF AN ORGANIC CHELATING AGENT WHICH IS ADAPTED TO FORM WITH THE METALLIC IONS OF THE PHOTOCONDUCTIVE COMPOUND A COLORED CHELATE OF INCREASED LIGHT-SENSITIVITY RELATIVE TO THE UNTREATED PHOTOCONDUCTIVE COMPOUND. A PREFERRED AMOUNT OF THE CHELATING COMPOUND IS 0.001-0.5% BY WEIGHT OF THE PHOTOCONDUCTIVE COMPOUND. A VARIETY OF SUITABLE ORGANIC CHELATING AGENTS ARE DISCLOSED.
-
公开(公告)号：US3597203A
公开(公告)日：1971-08-03
申请号：US3597203D
申请日：1968-07-25
Applicant: AGFA GEVAERT NV
Inventor： WILLEMS JOZEF FRANS
CPC classification number: G03C7/32 , G03C1/42 , G03C5/3021 , G03C5/3035 , G03C7/30 , G03C7/4136
Abstract: METHOD AND MATERIALS FOR FORMING COLOR IMAGES IN EXPOSED SILVER HALIDE EMULSION LAYERS BY MEANS OF A COLOR COUPLING COMPOUND OF THE FORMULA
R2-NH-N=C
WHEREIN:
R1 REPRESENTS AN ALKYL RADICAL, AN ALKENYL RADICAL, OR AN ARYL RADICAL, Z REPRESENTS THE NON-METALLIC ATOMS NECESSARY TO COMPLETE A 5- OR 6-MEMBERED HETEROCYCLIC NUCLEUS, OR SUCH NUCLEUS MAKING PART OF A FUSED HETEROCYCLIC SYSTEM, L1 REPRESENTS A METHINE GROUP OR NITROGEN, N IS 1 OR 2, AND R2 REPRESENTS AN ACYL GROUP OR A RADICAL OF THE FORMULA -CONH2 OR -SO2X, WHEREIN X REPRESENTS HYDROXYL, AN AMINO RADICAL, A HETEROCYCLOC RADICAL, AN ALKYL RADICAL, AN ALKOXY RADICAL, AN ARYLOXY RADICAL, OR AN ARYL RADICAL, DEVELOPED WITH A PYRAZOLIDINE-3-ONE
HAVING SUBSTITUTED AT THE 1-POSITION THEREOF AN ARYL GROUP FREE OF SUBSTITUTIONS AT ITS P-POSITION. BOTH OF THE COLOR COUPLING COMPOUND AND THE DEVELOPING AGENT DEFINED ABOVE CAN BE PROVIDED IN A PHOTOGRAPHIC MATERIAL IN EFFECTIVE CONTACT WITH THE SILVER HALIDE OF A LIGHT SENSITIVE SILVER HALIDE EMULSION LAYER.-
Patent Agency Ranking
公开(公告)号：US3563747A
公开(公告)日：1971-02-16
申请号：US3563747D
申请日：1967-11-06
Applicant: AGFA GEVAERT NV
CPC classification number: G03C5/3014 , G03C5/30
Abstract: A PROCESS AND SOLUTION FOR DEVELOPING EXPOSED SILVER HALIDE EMULSIONS DURING A SUPER-ADDITIVE COMBINATION OF AN ANIONIC SILVER HALIDE DEVELOPER SUCH AS HYDROQUINONE OR A DERIVATIVE THEREOF AND A BIS(PYURIDONE) AZINE SUBSTITUTED ON THE NITROGEN ATOMS BY AN ALKYL OR AN ARALKYL GROUP. DEVELOPMENT IS CARRIED OUT UNDER ALKALINE CONDITIONS.
-
公开(公告)号：US3462273A
公开(公告)日：1969-08-19
申请号：US3462273D
申请日：1966-07-11
Applicant: AGFA GEVAERT NV
Inventor： SELS FRANCIS JEANNE , WILLEMS JOZEF FRANS , VRANCKEN MARCEL NICOLAS
-
公开(公告)号：US3869290A
公开(公告)日：1975-03-04
申请号：US30340372
申请日：1972-11-03
Applicant: AGFA GEVAERT NV
Inventor： PHILIPPAERTS HERMAN ADELBERT , POLLET ROBERT JOSEPH , VANDENBERGHE ANTOON LEON , WILLEMS JOZEF FRANS
IPC: G03C1/43 , C07C67/00 , C07C313/00 , C07C323/20 , C07D235/06 , C07D277/74 , G03C1/06 , G03C1/09 , G03C1/10 , G03C1/34
CPC classification number: C07C323/00 , C07D235/06 , C07D277/74 , G03C1/09 , G03C1/346 , G03C2001/03511 , G03C2200/34 , G03C2200/38 , G03C2200/45
Abstract: WHEREIN: R is hydrogen, acyl, haloacyl or acyl carrying a quaternary ammonium group, R1 is an aliphatic, aromatic or heterocyclic group, and R2 is hydrogen, the group -S-R1 or one or more substituents selected from alkyl, aryl, halogen, hydroxyl or alkoxy. The compounds reduce distortions of image-details, enhance image-sharpness and reduce yellowing upon reversal processing.
Lippmann-emulsions are described which comprise a compound of the formula:Abstract translation: 描述了包含下式化合物的Lippmann乳液：
-
公开(公告)号：US3692522A
公开(公告)日：1972-09-19
申请号：US3692522D
申请日：1971-07-21
Applicant: AGFA GEVAERT NV
Inventor： NOE ROBERT JOSEPH , WILLEMS JOZEF FRANS , POOT ALBERT LUCIEN , VERHILLE KAREL EUGEEN
CPC classification number: G03G5/0642 , G03G5/0633 , G03G5/064 , G03G5/067 , G03G5/09
Abstract: ELECTROPHOTOGRAPHIC RECORDING MATERIAL CONTAINING PHOTOCONDUCTIVE ZINC OXIDE TREATED WITH GUANAZOLE AND PROCESSES OF ELECTROPHOTOGRAPHIC RECORDING USING SUCH MATERIALS. THESE MATERIALS ARE CHARACTERIZED BY LOW MEMORY EFFECT, IMPROVED CHARGING CHARACTERISTICS AND ARE CAPABLE OF ACCEPTING EITHER POSITIVE OR NEGATIVE CHARGES TO OBTAIN EITHER POSITIVE OR NEGATIVE COPIES.
-
30.发明授权
公开(公告)号：US3689273A
公开(公告)日：1972-09-05
申请号：US3689273D
申请日：1970-10-27
Applicant: AGFA GEVAERT NV
Inventor： WILLEMS JOZEF FRANS , BERENDSEN JULES ROBERT , POLLET ROBERT JOSEPH , VANDENBERGHE ANTOON LEON
Abstract: A PHOTOGRAPHIC SILVER HALIDE EMULSION WHEREIN THE SILVER HALIDE HAS BEEN CHEMICALLY RIPENED IN AN AQUEOUS HYDROPHILIC COLLOID MEDIUM COMPRISING AS A CHEMICAL SENSITIZER AN ALIPHATIC OR AROMATIC SULPHIDE OR SELENIDE COMPRISING AT LEAST THREE SULPHUR AND/OR SELENIUM ATOMS LINKED TOGETHER AND AS A STABILIZER AGAINST FOG FORMATION A HYDROXY TETRA-AZAINDENE COMPOUND, AND THE METHOD OF PREPARING THE EMULSION IS DESCRIBED. THE EMULSION HAS SUPERIOR SENSITIVITY AND REDUCED FOG PARTICULARLY UPON STORAGE.
-
-
-
-
-
-
-
-
-
Search Results
53
records
(took 0.013 seconds)
