公开(公告)号：DE3060502D1

公开(公告)日：1982-07-22

申请号：DE3060502

申请日：1980-07-10

Applicant: IBM

Inventor： ARMITAGE JR JOHN DENTON ,  ROUTT JR WILSON MORGAN

IPC: G03G15/041 ,  G03G15/052

公开(公告)号：DE3061708D1

公开(公告)日：1983-03-03

申请号：DE3061708

申请日：1980-02-01

Applicant: IBM

Inventor： ARMITAGE JR JOHN DENTON ,  BARKLEY JOHN ALLEN ,  HOOKER III ROSS BRIAN ,  WALKER JAMES ROBERT

IPC: B41J2/45 ,  G03G15/04 ,  G03G15/043 ,  G03G15/047 ,  G03G21/14 ,  G03G15/052

Abstract: A border discharge device for an electrophotographic copier comprises a row of light emitting diodes (42 to 74) positioned adjacent light channel sections (90 to 93). The channels (90, 91 and 93) provide edge erase and channel (92), together with the others, provide inter-image erase, the diodes being selectively energised to effect these functions. The channels comprise blocks of transparent material having reflective upper and lower surfaces to allow propogation of light rays from each diode to the photoconductive imaging element at a plurality of angles of incidence. Thus each channel provides a substantially uniformly illuminated strip area.