| 摘要 |
1, 024, 795. Heat sensitive copy sheet. MINNESOTA MINING & MANUFACTURING CO. Oct. 12, 1962 [Oct. 12, 1961], No. 38770/62. Heading G2C. A heat sensitive copy sheet comprises a visually reactive component in combination with an opaque heat-transparentisable component. The two components may be in separate layer or may be combined in a single layer. The reactive materials may have a conversion temperature between 90‹C. and 150‹C.
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