Patent · US Expired

Liquid developer for electrostatic image

US3993483A · kind A · utility

21Cited by
6References
10Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJan 22, 1974
Grant dateNov 23, 1976
Priority date
Expiry dateJan 22, 1994

Classification

  • Technology area (CPC Y)Emerging Cross-Sectional Technologies
  • CPC primaryY10S430/105
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

Liquid developers for use in developing electrostatic latent image which contain at least one member selected from the following Group A and at least one member selected from the following Group B. PA1 Group A: Cumarone indene resin, rosin modified phenol resin, rosin modified maleic acid resin, rosin modified pentaerythritol resin, alkylphenol modified xylene resin, styrene-vinyltoluene copolymer, and resin acid calcium salt. PA1 Group B: Low molecular polyethylene, ethylene-ethylacrylate copolymer, ethylene-vinylacetate copolymer, low molecular polypropylene, chlorinated paraffin (degree of chlorination, 40 to 70%), polybutene resin, .beta.-pinene resin, polyterpene resin, and alkylphenol formaldehyde resin.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.