Xeroprinting process with improved contrast potent

专利名称：Xeroprinting process with improved contrast

potential

发明人：Man C. Tam,Rafik O. Loutfy,Gregory J. Kovacs申请号：US07/444343申请日：19891201公开号：US04970130A公开日：19901113

摘要：Disclosed is a xeroprinting process which comprises

(1) providing a xeroprinting master comprising

(a) a substrate; and

(b) a softenable layer comprising a softenable material, a charge transport materialcapable of transporting charges of one polarity, and migration marking material situatedcontiguous to the surface of the softenable layer spaced from the substrate, wherein aportion of the migration marking material has migrated through the softenable layertoward the substrate in imagewise fashion;

(2) uniformly charging the xeroprinting master to a polarity opposite to the polarityof the charges that the charge transport material in the softenable layer is capable oftransporting;< P>

(3) uniformly exposing the charged master to activating radiation, thereby dischargingthose areas of the master wherein the migration marking material has migrated towardthe substrate and forming an electrostatic latent image;

(4) developing the electrostatic latent image; and

(5) transferring the developed image to a receiver sheet.

The process results in greatly enhanced contrast potentials or contrast voltagesbetween the charged and uncharged areas of the master subsequent to exposure toactivating radiation, and the charged master can be developed with either liquiddevelopers or dry developers.

申请人：XEROX CORPORATION

代理人：Judith L. Byorick

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