Erasable ceramic bar-code

Details Erasable ceramic bar-code Erasable ceramic bar-code

1997-07-29

1998-12-01

McPherson, John A.

Radiation imagery chemistry: process, composition, or product th

Imaged product

Nonsilver image

4304951, 430945, G03C 1725

Patent

active

058435999

ABSTRACT:
A printing member that can be imaged directly using a laser and is image erasable, the printing member includes a writing surface composed of a non-porous zirconia ceramic ZrO.sub.2 that is alloyed with a secondary oxide selected from the group consisting of MgO, CaO, Y.sub.2 O.sub.3, Sc.sub.2 O.sub.3, a rare earth oxide, and combinations thereof, the zirconia alloy being a non-porous ceramic and having a density of from about 5.6 to about 6.2 g/cm.sup.3 ; and an erasable bar-code printed onto the writing surface.

REFERENCES:
patent: 5290332 (1994-03-01), Chatterjee et al.
patent: 5298476 (1994-03-01), Hotta et al.
patent: 5336282 (1994-08-01), Ghosh et al.
patent: 5358913 (1994-10-01), Chatterjee et al.
patent: 5521709 (1996-05-01), Bossen et al.
patent: 5543269 (1996-08-01), Chatterjee et al.

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