| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a magnetic toner 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 preventing dielectric breakdown of an a-Si photosensitive layer from occurring within a short period due to charge-up, and thereby, making it possible to form favorable images for a long time in a wide variety of environment, and to provide an image forming method using the toner. <P>SOLUTION: The magnetic toner contains 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 ridge lines 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. In the image forming method, an electrostatic latent image formed on the surface of an a-Si photosensitive layer is developed into a toner image by a magnetic one-component jumping developing method using the above magnetic toner. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
