Toner and image forming method
US6214509A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 13, 1999 |
| Grant date | Apr 10, 2001 |
| Priority date | — |
| Expiry date | May 13, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/09716
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The objects of the present invention are to provide a toner excellent in transferability, little remaining on the photosensitive member and causing no defective image in roll-aided transfer (or at least such a phenomenon is well-controlled), and also to provide an image forming method using the same toner. The above objects are achieved when the toner contains a binder resin and colorant, inorganic fine particles, and a hydrotalcite compound shown by the formula: EQU M1.sub.y1.sup.2+ M2.sub.y2.sup.2+ . . . Mj.sub.yj.sup.2+ L1.sub.x1.sup.3+ L2.sub.x2.sup.3+ . . . Lk.sub.xk.sup.3+ (OH).sub.2.(X/n)A.sup.n-.mH.sub.2 O (1) wherein 0<[X=(x1+x2+ . . . xk)].ltoreq.0.5; Y=(y1+y2+ . . . +yj)=1-X; j and k are each an integer of 2 or larger; M1.sup.3+, M2.sup.3+, . . . and Mj.sup.2+ are divalent metallic ions different from each other; L1.sup.3+, L2.sup.3+ . . . and Lk.sup.3+ are trivalent metallic ions different from each other; A.sup.n- is a n-valent anion; and m.gtoreq.0), and when the image forming method in which the above toner is used comprises a charging step which charges an image carrier; latent image forming step which forms an electrostatic latent image on the charged image carrier…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.