Stoichiometric ferrite carriers
US4042518A · kind A · utility
27Cited by
4References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 7, 1975 |
| Grant date | Aug 16, 1977 |
| Priority date | — |
| Expiry date | Jul 7, 1995 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F1/36
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Humidity insensitive, uncoated electrostatographic carrier materials comprising substantially stoichiometric ferrite compositions using various divalent metal oxides and/or one monovalent metal oxide, singly and in combination, which are within about .+-. 3 mol percent deviation from stoichiometry in divalent metal content. The carrier materials may be mixed with toner materials to form developer mixtures and employed to develop electrostatic latent images.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.