| 摘要 |
The invention relates to high energy beam-sensitive glass articles exhibiting insensitivity and/or inertness to artinic radiation, i.e., glass articles which are darkened and/or colored within a thin surface layer of, e.g., about 0.1-3 mu m upon exposure to high energy beams, electron beams, and ion beams in particular, without a subsequent development step, and which need no fixing to stabilize the colored image, since both the recorded image and the glass article are sensitive to radiation in the spectral range of UV, and longer, wavelengths. More particularly, the instant invention is concerned with Ag+ ion-exchanged glass articles having base glass within alkali metal silicate composition fields containing at least one of the oxides of transition metals which have one to four d-electrons in an atomic state. Whereas the base glass composition can be varied widely, spontaneous reduction as well as photo-reduction of Ag+ ions are inhibited and/or eliminated due to the presence of said transition metal oxides in the glass article. The product of the invention is suitable for use as recording and archival storage media and as photo tools. The recorded images and/or masking patterns can be updated, can be any single color in the visible spectrum, and can be erased by heat at temperatures above about 200 DEG C.
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