Ink and eraser of the ink
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United States of America Patent
Stats
-
Dec 10, 1985
Grant Date -
N/A
app pub date -
Dec 22, 1982
filing date -
Dec 25, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Colored ink comprising a developer having a phenolic hydroxyl group, an electron-donating colorless dye which develops a color by the action of the developer, and a solvent which does not inhibit a color developing reaction. Handwriting written in this colored ink can be erased by using an eraser comprising a desensitizing compound which makes the colored electron-donating dye colorless.
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Cited Art Landscape
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