Heidelberger Druckmaschinen Ag

Gerhard Daniel Peiter

Martin Gutfleisch

Gerald Erik Hauptmann

Harald Latzel

Matthias Schlörholz

Wolfgang Eck

A reusable printing plate, in particular for use both in wet offset printing and in dry offset printing, includes a printing area and a metal oxide surface treated with at least one fluorinated phosphonic acid. A printing press and a printing unit having the printing plate, a process for imaging the printing plate and a process for preparation of a fluorinated organic phosphonic acid are also provided.

Reusable printing plate, printing press and printing unit having the printing plate, process for imaging the printing plate and process for preparation of a fluorinated organic phosphonic acid

Presented is a reusable printing form including a printing area that has a metal oxide surface, in particular a native oxidized titanium surface, which is treated with at least one amphiphilic organic compound whose polar region has an acidic character. In an advantageous embodiment, n-heptadecanyl hydroxamic acid {CH3-(CH2)16-C(O)&#x2014;NH&#x2014;OH} and/or n-octadecanyl phosphonic acid {CH3-(CH2)17-P(O)&#x2014;(OH)2} is used. Also described is a method for imaging a reusable printing form. The reusable printing form can be used for offset printing.

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Viernheim, Germany

Gerhard Daniel Peiter