Agfa Gevaert Nv

Agfa-gevaert

Agfa Graphics Nv

Agfa-gavaert N.v.

Rene M De Keyzer

Jean-Marie O Dewanckele

Jos A Vaes

Johan August Loccufier

Luc A De Brabandere

Raymond L Odeurs

Marcel J Monbaliu

Paul J Coppens

Leon L Vermeulen

Robert J Pollet

Ludo Van Rompuy

Ludo L Van Rompuy

Yves Van Meenen

Paul R Callant

Ivan Hoogmartens

Guido Vital Desie

Carlo A Uyttendaele

Johan J Lamotte

Roland Claes

Lode Deprez

Dirk Cyriel Quintens

Kathy Elst

Francis J Sels

Bavo A Muys

Albert Lucien Poot

Ronny De Clercq

Patrick Albert Mertens

Antonius A Rutges

Mona Treguer

Jules Robert Berendsen

Antoine A De Jaeger

Alfons J Bertels

Bartholomeus Van Der Linden

Hynd Remita

Jacqueline Belloni-Cofler

An ink-jet printing system including at least one ink-jet ink and a means for jetting an ink-jet ink onto a surface of a substantially non-absorbing ink-jet ink-receiver, characterized in that the ratio &#x3c3; S/&#x3c3; Lof the dispersive surface energy of said ink-receiver surface &#x3c3; Sover the dispersive surface energy of said ink-jet ink &#x3c3; Lis greater than 0.9. A process for ink-jet printing is also claimed. High areal throughput ink-jet printing (e.g. &#x3e;100 m/hour) with curable inks can be performed on different kinds of ink-receiver surfaces with a good image quality and colour density due to a controlled spreading of the ink-drops which can be directly cured.

Ink-jet printing system

Thermographic recording material with improved image tone

A photosensitive element which comprises on a support at least one photosensitive silver halide emulsion layer and at least a non-light sensitive layer, wherein the silver halide emulsion layer comprises a chalcogenic compound satisfying formula (1): ##STR1## wherein: X represents Se or Te, forming a double bond with its neighbouring C-atom,

Photosensitive element containing a silver halide emulsion chemically

A photosensitive element is disclosed comprising on at least one side of a support one or more silver halide emulsion layers and a non-light sensitive hydrophilic colloidal layer characterized in that at least one emulsion layer comprises silver halide crystals having an oligomeric platinum complex containing only carbonyl ligands, which is represented by formula (1):

Photosensitive silver halide emulsion containing a metal

A photosensitive element which comprises a support, at least one silver halide emulsion layer and at least a non-light sensitive hydrophilic colloidal layer, wherein the silver halide emulsion layer comprises a selenium compound represented by formula (1): ##STR1## wherein: Q represents R.sup.1 SO.sub.2 or R.sup.2 R.sup.3 P=X;

Photosensitive image-forming element with increased

The present invention provides an imaging element comprising in the order given on a hydrophilic surface of a support (i) an image receiving layer containing physical development nuclei, (ii) a photosensitive layer containing one or more silver halide emulsions being in water permeable relationship with said image receiving layer, characterized in that said one or more silver halide emulsions comprise substantially no silver bromide and that said imaging element comprises on top of said photosensitive layer an antistress layer, being in water permeable relationship with said photosensitive layer and comprising an unhardened gelatin in an amount ranging from 0.60 to 1.75 g/m.sup.2. According to the present invention there is also provided a method for making an offset printing plate according to the silver salt diffusion transfer process comprising the steps of:

Imaging element for making an improved printing plate according to the

According to the present invention, a method is provided for preparing physical development nuclei for use in silver salt diffusion transfer processing, said physical development nuclei comprising a heavy metal sulphide, said method comprising the steps of: precipitating said heavy metal sulphide by bringing a water soluble heavy metal compound in reactive association with a water soluble sulphide in an aqueous liquid and said precipitation being carried out in the presence of a hydrophilic polymer so as to disperse said heavy metal sulphide, said hydrophilic polymer comprising a heterocyclic group, characterized in that said heterocyclic group is present in a recurring unit of said hydrophilic polymer, said recurring unit being comprised in said polymer in an amount between 0.1 mol % and 5 mol %.

Method for preparing physical development nuclei for use in silver salt

The present invention provides a method for obtaining an imaging element suitable for use in a silver salt diffusion transfer process comprising the steps of coating a support with a layer comprising physical development nuclei and a photosensitive layer comprising a photosensitive silver halide emulsion, said photosensitive layer being in water permeable relationship with said image receiving layer, characterized in that said physical development nuclei consist of a substantially homogeneous solid solution of two or more different metals and are prepared by pulsed high flux radiolysis. According to the invention there is further provided a method for making a lithographic printing plate comprising the steps of image-wise exposing an imaging element prepared as defined above and subsequently developing a thus obtained image-wise exposed imaging element by means of an alkaline processing solution in the presence of a developing agent and a silver halide solvent.

Method for making an imaging element and a printing plate according to

The present invention provides a method for making a lithographic printing plate according to the silver salt diffusion transfer process comprising the steps of image-wise exposing an imaging element comprising on a support a photosensitive layer comprising a silver halide emulsion and an image receiving layer containing physical development nuclei and developing said imaging element in the presence of developing agent(s) and silver halide solvent(s) using an alkaline processing liquid characterized in that said development is carried out in the presence of a meso-ionic compound. The present invention further provides an imaging element and alkaline processing liquid for use in said method.

Method for making a lithographic printing plate according to the silver

The present invention provides an image receiving material comprising a receiving layer containing physical development nuclei characterized in that said physical development nuclei are grown on a colloidal smectic clay. Said image receiving material may be provided wih a photosensitive silver halide emulsion layer or may form a separate receiving element. The image receiving materials of the present invention can also be used for making lithographic printing plates having good printing properties.

Image receiving layer for use in a silver salt diffusion transfer process

The present invention provides an imaging element comprising in the order given on a hydrophilic surface of a support (i) an image receiving layer containing physical development nuclei, (ii) a photosensitive layer containing a silver halide emulsion being in water permeable relationship with said image receiving layer and (iii) an intermediate layer between said image receiving layer and said photosensitive layer, characterized in that said intermediate layer comprises particles of an alkali insoluble non-polymeric organic compound having a melting point of at least 50.degree. C, said particles having a number average size between 0.1 .mu.m and 10 .mu.m. According to the present invention there is also provided a method for making an offset printing plate according to the silver salt diffusion transfer process by using said imaging element+.

Imaging element and method for making lithographic printing plates

The present invention provides a method for making a lithographic printing plate according to the silver salt diffusion transfer process comprising the steps of exposing and developing an imaging element comprising on a support a silver halide emulsion layer and an image-receiving layer in the presence of a silver halide solvents corresponding to the following formula:

According to the present invention there is provided a method for making a lithographic printing plate according to the DTR-process comprising the steps of:

An aqueous alkaline processing liquid for use in silver halide photography, wherein said liquid comprises one or more alkanolamines, the said alkanolamines consisting of one or more tertiary alkanolamines in a total amount in the range from 0.3 mol/l to 1.5 mol/l, and one or more secondary alkanolamines in an amount from 0 mol % to 30 mol % with respect to the amount of tertiary alkanolamine(s), and said liquid also contains sulphite ions in an amount in the range of 16 g/l to 30 g/l.

Processing liquid for use in silver complex diffusion transfer processing

The present invention provides a photographic material comprising on a support an image-receiving layer containing physical development nuclei, a photosensitive silver halide emulsion layer and a substantially light insensitive layer containing silver salt characterized in that said photosensitive silver halide emulsion layer contains silver halide particles having an average diameter of at least 0.6 .mu.m, said photosensitive silver halide emulsion layer being located between said image-receiving layer and said substantially light insensitive layer and said substantially light insensitive layer having a speed of at least a factor 10 less than said photosensitive silver halide emulsion layer. The present invention also provides a method for making an image therewith. The photographic material of the present invention is of high speed and can yield direct positive image with a low density in the non-image areas.

Growing community of inventors

Sint-Niklaas, Belgium

Rene M De Keyzer