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An excerpt from the book 'Inks for the Minor Printing Processes and Specialised Applications' by E. A. Apps (1963), which describes briefly the
- general characteristics
- ink fluid
- pigments
- manufacturing
of typewriter ribbons.
Link: Archive.org.
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Interesting. Thanks for the link. Do you happen to know what book this is from?
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Never mind. By the time I finished reading, I forgot the initial post. (still trying to get over the flu).