Magnetic toner and image forming method using the same
US7582400B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 7, 2005 |
| Grant date | Sep 1, 2009 |
| Priority date | — |
| Expiry date | Dec 21, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/0838
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Magnetic toner involves magnetic powder 1 having the particle shape of an octahedron 2 that is a convex polyhedron surrounded by eight triangles as a basis, each of the vertexes and edges of the octahedron being in a curved surface shape, and having a portion 3 that can be taken as a straight line on the outer periphery of its projected image. Therefore, the magnetic toner is superior in both two contradictory properties, that is the property of making it easy for a charging amount to quickly rise as well as improving the charging amount and the property of making it difficult for charge-up to occur, thereby making it possible to form a good image under a wide environment. In an image forming method, an electrostatic latent image is developed into a toner image by a magnetic one-component jumping developing method using the magnetic toner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.