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Pharmaceutical ink : ウィキペディア英語版 | Pharmaceutical ink
Pharmaceutical ink is an ingestible form of water-based ink used on most medicine pills to indicate which drug it is, and/or how many milligrams the pill contains. == History ==
The first U.S. patent for pharmaceutical inks was filed on 28 June 1966, and its method involved ethyl alcohol, shellac, titanium dioxide and propylene glycol. Most pharmaceutical inks since the early 1990s eliminate ethyl alcohol in favor of faster ink drying times, and may include methyl alcohol and isopropanol in addition to the traditional ingredients titanium dioxide and propylene glycol.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Pharmaceutical ink」の詳細全文を読む
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