Radiation imagery chemistry: process – composition – or product th – Diazo reproduction – process – composition – or product – Composition or product which contains radiation sensitive...
Patent
1996-01-29
1997-09-02
Chu, John S.
Radiation imagery chemistry: process, composition, or product th
Diazo reproduction, process, composition, or product
Composition or product which contains radiation sensitive...
430157, 430160, 430175, 430176, G03F 711
Patent
active
056630310
ABSTRACT:
The present invention provides an imaging element comprising on a support in the order given a coated composition of at least two hydrophilic layers being in water permeable contact with each other and each containing a hydrophilic (co)polymer or (co)polymer mixture and having been hardened with a hydrolyzed tetraalkyl orthosilicate and a light sensitive layer containing a diazo resin or a diazonium salt characterized in that the ratio by weight in the top layer of said package of said hydrophilic (co)polymer or (co)polymer mixture versus said hydrolyzed tetraalkyl orthosilicate (expressed as silicon dioxide) is at least 1.1 and the ratio by weight in an underlying layer of said package of said hydrophilic (co)polymer or (co)polymer mixture versus said hydrolyzed tetraalkyl orthosilicate (expressed as silicon dioxide) is not higher than 0.9.
REFERENCES:
patent: 4970133 (1990-11-01), Vermeersch et al.
patent: 5445912 (1995-08-01), Hauquier et al.
patent: 5462833 (1995-10-01), Hauquier et al.
Cortens Willem
Hauquier Guido
Kokkelenberg Dirk
Vermeersch Joan
Verschueren Eric
Agfa-Gevaert N.V.
Chu John S.
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