Flexible zirconia alloy ceramic lithographic printing tape and m

Details Flexible zirconia alloy ceramic lithographic printing tape and m Flexible zirconia alloy ceramic lithographic printing tape and m

1997-04-18

1998-11-24

Funk, Stephen R.

Printing

Planographic

Lithographic plate making, and processes of making or using...

101453, 101478, 430302, B41C 110

Patent

active

058393706

ABSTRACT:
Flexible and reusable lithographic printing tapes are prepared from a zirconia ceramic that is an alloy of ZrO.sub.2 and a second oxide chosen from MgO, CaO, Y.sub.2 O.sub.3, Sc.sub.2 O.sub.3, a rare earth oxide or a combination of any of these. These printing tapes have an average thickness of less than about 5 mm. In use, a surface of the zirconia alloy ceramic printing tape is imagewise exposed to electromagnetic radiation which transforms it from a lydrophilic to an oleophilic state or from an oleophilic to a hydrophilic state, thereby creating a lithographic printing surface which is hydrophilic in non-image areas and is oleophilic and thus capable of accepting printing ink in image areas. Such inked areas can then be used to transfer an image to a suitable substrate in lithographic printing. These printing tapes are directly laser-imageable as well as image erasable.

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