Non-magnetic one-component developer
US5215849A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Jan 14, 1991 |
| Grant date | Jun 1, 1993 |
| Priority date | — |
| Expiry date | Jan 14, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/09716
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A non-magnetic one-component developer suitable for use in a contact or non-contact development system. The developer comprises 100 parts by weight of colored fine particles, which comprises a binder resin and a colorant, and 0.3-10 parts by weight of at least one fine inorganic powder selected from (i) a fine inorganic powder (I) obtained by subjecting a fine inorganic powder having an average particle size of 0.1-10 .mu.m and a heating loss (under drying conditions of 150.degree. C. and 1 hour) of at most 1 wt.% to a hydrophobicity-imparting treatment with a silicone oil and (ii) a fine inorganic powder (II) obtained by subjecting a fine inorganic powder having an average particle size of 0.1-10 .mu.m to a two-step hydrophobicity-imparting treatment with at least one compound selected from silane coupling agents and silazane compounds and then further with a silicone oil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.