Non-magnetic toner for developing electrostatic latent image
US6174641A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 11, 2000 |
| Grant date | Jan 16, 2001 |
| Priority date | — |
| Expiry date | Apr 11, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/0821
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention relates to a non-magnetic toner for developing electrostatic latent images, having; PA1 an average degree of roundness of not less than 0.960, PA1 a standard deviation of degree of roundness of not more than 0.040, PA1 a value of D/d.sub.50 of not less than 0.40, in which D=6/(.rho..multidot.S) (.rho. is a true density of toner (g/cm.sup.3), and S is a BET specific surface area of toner (m.sup.2 /g)); d.sub.50 is an average weight particle size of toner, and an adhesive stress of 6 g/cm.sup.2 or less under a compression of 1 kg/cm.sup.2. The non-magnetic toner for developing electrostatic latent images provides high-quality images not only in low-speed areas, but also in high-speed areas, and has a superior transferring properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.