Two-component developer, replenishing developer, and image-forming method
US7906262B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 3, 2010 |
| Grant date | Mar 15, 2011 |
| Priority date | — |
| Expiry date | Mar 3, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/10
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A two-component developer containing a cyan toner and a magnetic carrier, wherein the cyan toner has the characteristics: (i) when the concentration of the cyan toner in a solution of the cyan toner in chloroform is represented by Cc (mg/ml) and the absorbance of the solution at a wavelength of 712 nm is represented by A712, a relationship between Cc and A712 satisfies the relationship of 2.00<A712/Cc<8.15; (ii) the lightness L* and chroma C* of the cyan toner determined in a powder state satisfy the relationships of 25.0≦L*≦40.0 and 50.0≦C*≦60.0; and (iii) the absolute value for the triboelectric charge quantity of the cyan toner measured by a two-component method using the cyan toner and the magnetic carrier is 50 mC/kg or more and 120 mC/kg or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.