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公开(公告)号:DE2749695A1
公开(公告)日:1978-06-22
申请号:DE2749695
申请日:1977-11-07
Applicant: IBM
Inventor: FAN GEORGE JEE , LO DAVID CHAN-WAI , MITCHELL JOSEPH WILLIAM
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公开(公告)号:DE2623508A1
公开(公告)日:1976-12-23
申请号:DE2623508
申请日:1976-05-26
Applicant: IBM
Inventor: SAMBUCETTI CARLOS JUAN , MITCHELL JOSEPH WILLIAM
Abstract: Improvements in water based magnetic inks of the type containing non-ionic, cationic and/or anionic surfactants by the inclusion of glycerol, non-volatile solvent such as mono-lower alkyl ethers of ethylene glycol and low molecular weight polyethylene diols.
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