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Inventor:
Verbeeck; Ann
Address:
Begijnendijk, BE
No. of patents:
27
Patents:












Patent Number Title Of Patent Date Issued
6472137 Light-sensitive silver halide photographic film material and radiographic intensifying screen-fi October 29, 2002
A light-sensitive silver halide photographic film material has been provided, said film material comprising a transparent support and on both sides thereof at least one light-sensitive emulsion layer having spectrally and chemically sensitized tabular silver halide grains rich in sil
6432625 Processing method providing cold blue-black image tone for black-and-white materials having silv August 13, 2002
A method has been described for processing an exposed black-and-white silver halide photographic film material comprising in a hydrophilic light-sensitive layer thereof a binder and silver halide grains being {111} or {100} tabular silver bromo(chloro)iodide or silver chloro(bromo)io
6403276 Radiographic UV/blue film material and intensifying screen-film combination June 11, 2002
A film material has been provided with emulsions comprising {111} tabular silver halide grains rich in silver bromide, spectrally sensitive to irradiation in the wavelength range shorter than 420 nm by the presence of at least one blue spectral sensitizer and of at least one azacyanine d
6379877 Method for developing an exposed photographic silver halide material April 30, 2002
According to this invention a developer has been disclosed having a low pH value between 9.6 and 11.0, preferably between 9.6 and 10.3, and comprising hydroquinone in an amount from 0 to less than 30 g per liter, an auxiliary developing agent, and as silver halide complexing agents a
6348293 Radiographic film material exhibiting increased covering power and "colder" blue-black image ton February 19, 2002
A radiographic film material is described including a transparent film support having first and second major surfaces coated with a subbing layer, optionally overcoated with an antihalation undercoat. Coated adjacent on each side of the film support is a light-sensitive silver halide
6346360 Radiographic film material exhibiting increased covering power and "colder" blue-black image ton February 12, 2002
A radiographic film material has been provided, comprising a transparent film support having first and second major surfaces coated, apart from a subbing layer and, optionally, a non-light-sensitive hydrophilic layer thereupon, with at least one light-sensitive silver halide emulsion lay
6342338 Silver halide photographic material exhibiting increased covering power and "colder" blue-black January 29, 2002
A black-and-white silver halide photographic film material, particularly suitable for use in radiography, has been disclosed, said material comprising a transparent film support having first and second major surfaces coated with a subbing layer, further coated adjacent thereto on one
6312882 Silver halide emulsions comprising tabular crystals, emulsions and the processing thereof November 6, 2001
A method is disclosed for preparing a light-sensitive silver halide emulsion comprising tabular grains containing colloidal silica sol as a protective colloid, said tabular grains having an average grain thickness of not more than 0.3 .mu.m, an average aspect ratio of more than 12:1, a
6200743 Radiation-sensitive emulsion, light-sensitive silver halide photographic film material and radio March 13, 2001
A spectrally-sensitized emulsion has been described, wherein said emulsion comprises {111} tabular silver halide grains having an average aspect ratio of at least 2 with two flat parallel {111} crystal faces accounting for a total projective surface of said parallel crystal faces in said
6136524 Light-sensitive emulsion having (100) tabular grains rich in silver chloride and method for prep October 24, 2000
A light-sensitive silver halide photographic emulsion has been described, said emulsion comprising a colloidally stabilizing binder and {100} tabular silver halide grains containing at least 50 mole % of silver chloride, wherein at least 70% by number of all grains is provided by said
6066441 Processing of radiographic materials having emulsion grains rich in silver chloride May 23, 2000
A method is disclosed of processing an exposed black-and-white light-sensitive silver halide photographic material having silver halide, coated in an amount, expressed as an equivalent amount of silver nitrate of less than 6 g/m.sup.2 comprising the steps of developing, fixing, rinsi
6048096 System and method for radiological image formation April 11, 2000
An image-forming system for radiological imaging is described consisting of an intensifying screen comprising on a support at least one layer of a green-light emitting phosphor and, in operative association therewith, a prehardened light-sensitive photographic silver halide film material
6030762 Method of preparing {111} tabular silver chloro(bromo)iodide crystals February 29, 2000
A method has been found of preparing a silver halide emulsion comprising silver chlorobromoiodide or silver chloroiodide tabular grains with at least 75 mole % of chloride and from 0.1 up to 3 mole % of iodide, based on silver, further having {111} crystal faces, an average aspect ratio
6030757 Multilayer silver halide photographic material and image-forming method in industrial radiograph February 29, 2000
A black-and-white silver halide photographic material is disclosed, said material comprising a support and on both sides thereof two light-sensitive emulsion layers and a protective antistress layer as an outermost layer, wherein per side of the support a total amount of silver, expr
6010840 Method for preparing tabular grains rich in silver chloride with reduced thickness growth and im January 4, 2000
A method has been described for preparing a gelatinous emulsion having grains rich in silver choride, wherein at least 70%, and more preferred 90%, of the total projected area of all grains is provided by {111} tabular grains having an average aspect ratio of more than 2:1, an average
5998083 System and method for radiological image formation December 7, 1999
An image-forming system for radiological imaging is disclosed said system consisting of an intensifying screen comprising on a support at least one layer of a green-light emitting phosphor and, in operative association therewith, a prehardened light-sensitive photographic silver halide f
5989799 Radiographic UV/blue intensifying screen-film combination November 23, 1999
A radiographic screen/film combination or system has been provided comprising a duplitized film sandwiched between a pair of supporting or self-supporting X-ray intensifying screens, characterized in that i) said pair of supported or self-supporting X-ray intensifying screens essenti
5912108 Processing of a light-sensitive silver halide photographic material June 15, 1999
A method has been disclosed of processing an image-wise exposed light-sensitive black-and-white silver halide photographic material comprising a support coated on one or both sides thereof with hydrophilic layers, wherein at least one of said layers comprises one or more emulsions ha
5795704 Method of hardener-free processing of a forehardened silver halide photographic material August 18, 1998
A method is disclosed of hardener-free processing a forehardened silver halide photographic material comprising a film support and on one or both sides thereof at least one silver halide emulsion layer characterized in that(1) each silver halide emulsion layer comprises spectrally sensit
5733715 Silver halide photographic materials comprising silver bromide or bromoiodide emulsions having t March 31, 1998
A light-sensitive silver bromide or silver bromoiodide emulsion is provided, comprising silver bromide or silver bromoiodide tabular triangular grains, said tabular triangular grains having an average grain thickness of less than 0.3 .mu.m, an average crystal diameter of at least 0.6
5604082 Method for processing an exposed photographic silver halide material February 18, 1997
A method has been disclosed of processing an exposed silver halide photographic material comprising at least one coated hydrophilic silver halide emulsion layer comprising tabular grains rich in chloride, bounded by [100] or [111] major faces, characterized by the steps of developing,
5593817 Developing solution and method for developing an exposed silver halide photographic material January 14, 1997
A photographic developing solution and a method of developing silver halide materials in the said developing solution is disclosed, the said developing solution comprising hydroquinone in an amount from 0 to 30 g per litre, an auxiliary developer, and silver halide complexing agents in
5543284 Preparation method of regular silver halide light-sensitive emulsions comprising silver halide c August 6, 1996
A method is disclosed to prepare a photographic light-sensitive silver halide emulsion, containing regular silver halide crystals rich in chloride having a predictable size distribution and wherein said method comprises the steps of precipitating silver halide crystals rich in chlori
5541051 Preparation of silver halide tabular emulsions in the presence of polar aprotic solvents and/or July 30, 1996
This invention offers a new method to produce tabular silver halide grains, more preferably silver bromide or silver bromoiodide grains, having a tabularity, defined as the ratio between the aspect ratio and the thickness of the emulsion crystals, of at least 25 and a homogeniety of
5498517 Process for the preparation of a hybrid direct positive emulsion and photographic material conta March 12, 1996
A process is disclosed for the preparation of a hybrid direct positive silver halide emulsion comprising the steps of (1) forming an essentially cubic host grain emulsion consisting of silver bromide or silver iodobromide, with a iodide content between 0 and 10 mole %, by a balanced
5478718 Preparation of silver halide tabular emulsions in the presence of non-aqueous polar aprotic solv December 26, 1995
A method has been found for the preparation of tabular silver halide emulsions having a tabularity, defined as the ratio between the aspect ratio and the thickness of the emulsion crystals, of at least 25 and a homogeniety of the distribution of said silver halide emulsion crystals,
5476761 Preparation method of regular silver (halide) bromide or silver bromoiodide light-sensitive emul December 19, 1995
A method is disclosed to prepare a light-sensitive regular silver bromide or silver bromoiodide emulsion, wherein said method comprises the following the steps:precipitating silver bromide or silver bromoiodide by means of the double-jet or triple-jet technique in colloidal silica having










 
 
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