发明名称 |
AC CORONA TO REMOVE BACKGROUND FROM THE TRANSFER MEMBER OF A THERMOMAGNETIC COPIER |
摘要 |
<p>A process for reproducing graphic information wherein a magnetic image is formed in a premagnetized layer of acicular chromium dioxide by heating the chromium dioxide selectively to above its Curie point. Ferromagnetic toner particles are then applied uniformly to the chromium dioxide layer, so as to adhere only in the magnetized areas. The toner particles are electrostatically transferred to a substrate and fused into position. Alternating current coronas or other static neutralizing devices are used to neutralize unwanted charges on toner particles which would otherwise cause fuzzy images and unwanted background markings on the final copies.</p> |
申请公布号 |
CA1107343(A) |
申请公布日期 |
1981.08.18 |
申请号 |
CA19770275044 |
申请日期 |
1977.03.29 |
申请人 |
DU PONT (E. I.) DE NEMOURS AND COMPANY |
发明人 |
EDWARDS, DONALD W.;GORONDY, EMERY J.;VAN ROGGEN, AREND |
分类号 |
G03G19/00;(IPC1-7):03G19/00 |
主分类号 |
G03G19/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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