| 摘要 |
PURPOSE:To enalbe stable development to high density with high quality over a long period of time, by turning a magnet roll and a non-magnetic sleeve in the same direction and using ferrite as a magnetic carrier for a developer. CONSTITUTION:A magnet roll 3 and a non-magnetic sleeve 4 are rotated at 400-200rpm, etc. in the direction (b) opposite from the direction (c) for conveying a two-component type developer 5 of a dry type using a magnetic carrier of ferrite which has prescribed grain sizes and good fluidity and does not scatter. Then, the developer 5 is agitated thoroughly and a magnetic brush consisting of the developer 5 which prevents the generation of sweeping stripes in the image formed with a substantial amt. of the developer is formed without scattering of the developer 5 and with soft tuft. As a result, the development to high density with high quality is accomplished stably over a long period of time. |
