Agfa Graphics Nv

Agfa-gevaert

Agfa Gevaert Nv

Other

Pascal F Meeus

Joan T Vermeersch

Stefaan Lingier

Johan August Loccufier

Hieronymus Andriessen

Ann L Verbeeck

Freddy Henderickx

Marc Irene Van Damme

Hubertus Van Aert

Dirk Franky Kokkelenberg

Peter M Willems

Gino L De Rycke

Willi-Kurt Gries

Mario Boxhorn

A method for developing a printing plate precursor comprising the step of immersing the precursor in an aqueous alkaline developing solution comprising a (co)polymer comprising a monomeric unit which is represented by the following formula (I): wherein L is a linking group; R, Rand Rindependently represent hydrogen or an alkyl group; Rrepresents an optionally substituted hydroxyaryl group; x=0 or 1; y=0 or 1 and when y=0 then x=1 and L is further bound to C* to form a cyclic structure. 

Method for developing a printing plate precursor

A heat-sensitive negative-working lithographic printing plate precursor includes on a grained and anodized aluminum support a coating including hydrophobic thermoplastic polymer particles, a hydrophilic binder, and an organic compound, wherein the organic compound includes at least one phosphonic acid group or at least one phosphoric acid group or a salt thereof.

Negative working, heat-sensitive, lithographic printing plate precursor

A method for making a lithographic printing plate is disclosed which comprises the steps of:

Method for making a lithographic printing plate

The invention relates to an alkaline developer for irradiated radiation sensitive compositions, which developer is based on water and at least one inorganic salt having an alkaline reaction, wherein the developer has a pH of at least 11 and comprises at least three structurally different surfactants of formulae (A), (B) and (C), characterised in that the surfactant of formula (A) has one anionic group, the surfactant of formula (B) has two anionic groups, the surfactant of formula (C) is non-ionic and has at least one non-ionic hydrophilic group, and the concentration of each of the surfactants of formulae (A), (B) and (C) in the developer is at least 0.05 weight-% based on the total weight of the developer. The developer leads to less depositions and has a superior stability when used.

Alkaline developer for radiation sensitive compositions

Method for developing an exposed photographic silver halide material

Photographic material containing a novel hydrazide type

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 an amount from 0 to 50 g per litre, characterized in that said developer further comprises

Developing solution and method for developing an exposed silver halide

A photographic developing solution for immersion development is disclosed showing a pH of at least 12.0 and containing more than 0.4 moles/liter of a sugar derivative, or an alkali metal salt thereof, corresponding to general formula (I): ##STR1## wherein X represents an oxygen atom or an imino group, and n represents a positive integer from 1 to 4, and R represents a hydroxy group when n is 1, and R represents a hydroxy group or a hydrogen atom when n is 2 to 4. Preferred sugar derivatives according to the present invention are l-ascorbic acid and iso-ascorbic acid. In a most preferred embodiment there are substantially no other developing agents and no sulphite ions present. When developing a graphic arts photographic material lith quality is obtained. The disposal of depleted solutions can be performed in an ecologically safe way.

Photographic developing solution containing an ascorbic acid derivative

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Turnhout, Belgium

Pascal F Meeus