December 2003 Alt-Photo-Process-L: Re: Obernetter

From: mark ^lt;mh004f8389@blueyonder.co.uk>
Date: 12/31/03-10:48:55 AM Z
Message-id: <001801c3cfbd$fa8b7d40$28b12552@ed3g5aivr3f939>

Hi Guillermo

>From the Dictionary of photography.

'OBERNETTER'S PROCESS, OR LICHTKUPFERDRUCK.

A mechanical printing process giving extremely pleasing results. The silver image of a gelatine positive is converted into silver chloride, and the film is then stripped and applied to the surface of a copper plate, and under the influence of an electric current, the silver chloride is decomposed, and the chlorine unites with the copper and etches it to a greater or less degree, according to the depth of deposit of silver chloride. The result is a grained intaglio plate of extreme delicacy and beauty, which is inked and printed from as is any other intaglio plate.'

Mark.

  ----- Original Message -----
  From: guillermo mischkinis
  To: alt-photo-process-l@sask.usask.ca
  Sent: Tuesday, December 30, 2003 10:04 PM
  Subject: Obernetter

Hi, does anybody know the copper salts based Obernette´s technique?

I was searching in the web, and found only a little mention in a text of Mike Ware, but with no fully description.

best regards,

guillermo
Received on Wed Dec 31 10:49:22 2003