Variable magnification optical system for use in electrophotographic printing,申请号US19810237031-传众专利搜索

Variable magnification optical system for use in electrophotographic printing

申请公布号：US4351606(A)

申请号：US19810237031

申请日期：1981.02.23

申请公布日期：1982.09.28

申请人：

XEROX CORPORATION

发明人：FRANKO, EUGENE B.

分类号：G03B27/62;G03B27/34;G03G15/041;G03G15/047;G03G21/00;(IPC1-7):G03G15/00

主分类号：G03B27/62

摘要：An electrophotographic printing method and apparatus in which a variable magnification optical system adjusts the size of indicia being reproduced on a copy sheet from a document. The size of the surface area of the copy sheet is compared with the surface area of the document being reproduced to generate a signal indicative of the difference therebetween. Responsive to this signal, the platens supporting the document and a lens are moved in synchronism relative to the photoconductive member to adjust the magnification of the indicia being reproduced.