| 摘要 |
A method of making a printing member for providing an erasable bar-code including providing a polymeric substrate having an insert cavity; forming an insert member having a writing surface composed of a non-porous zirconia ceramic ZrO2 that is alloyed with a secondary oxide selected from the group consisting of MgO, CaO, Y2O3, Sc2O3, a rare earth oxide, and combinations thereof, the non-porous zirconia alloy ceramic having a density of from about 5.6 to about 6.2 g/cm3; and providing an erasable bar-code image on the printing member by imagewise exposing the printing surface to electromagnetic radiation that transforms the printing surface from a stoichiometric to a substoichiometric state, thereby creating a printing surface having both image areas and non-image areas.
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