Liquid electrostatic developing medium having a mixture of non-esterified tricyclic diterpene carboxylic acid and polyhydric alcohol
Abstract
Abstract A LIQUID ELECTROSTATIC DEVELOPER HAVING TONER PARTICLES DISPERSED IN AN INSULATING, NONPOLAR ORGANIC LIQUID CARRIER IS USED FOR THE DEVELOPMENT OF ZINC OXIDE COATED COPY SHEETS AND THE LIKE. A TRICYCLIC DITERPENE CARBOXYLIC ACID OR HEAT BLENDED MIXTURE OF A TRICYCLIC DITERPENE CARBOCYLIC ACID AND A POLYHYDRIC ALCOHOL ABSORBED ON THE TONER PARTICLES ORIENTS THE POLARITY AND CONTROLS THE MAGNITUDE OF THE CHARGE ON THE TONER PARTICLES. SUITABLE ACIDS ARE LEVOPIMARIC ACID, ABIETIC ACID, NEOABIETIC ACID, DEHYDROABIETIC ACID, DIHYDROABIETIC ACID, TETRAHYDROABIETIC ACID, DEXTROPIMARIC ACID, AND ISODEXTROPIMARIC ACID. SUITABLE POLYHYDRIC ALCOHOLS ARE ETHYLENE GLYCOL, TRIETHYLENE GYLCOL, GLYCEROL, AND PENTAERYTHRITOL.
Inventors
- 👤 Lauren L Hulse
Bibliographic Details
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