| 摘要 |
PCT No. PCT/AU85/00169 Sec. 371 Date May 22, 1986 Sec. 102(e) Date May 22, 1986 PCT Filed Jul. 25, 1985 PCT Pub. No. WO86/01010 PCT Pub. Date Feb. 13, 1986.A photosensitive element suitable for manufacture of an external nameplate comprises a substrate carrying a cured non-etchable background surface, an etchable curable polymeric layer that can be etched imagewise to provide an image viewable against a background, and a photosensitive layer. A nameplate or other sign is obtained by imagewise photoexposure of the photosensitive layer, developing the image to reveal the curable layer, etching the revealed curable layer imagewise, removing the residual photosensitive material and then baking the product.
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