| 摘要 |
<p>ELECTROGRAPHIC APPARATUS, METHOD AND SYSTEM EMPLOYING IMAGE DEVELOPMENT ADJUSTMENT Contrast and/or density adjustment of developed electrographic images is effected in a development system comprising a hard magnetic carrier and a magnetic brush having a rotary core and shell. The adjustment is effected by cooperatively varying the core and shell rotation rates, within predetermined ranges, in a manner which maintains the operalive developer linear velocity generally equal to, and co-current with, the velocity of an electrographic image member's movement through the development zone.</p> |
