公开(公告)号：CA1141816A

公开(公告)日：1983-02-22

申请号：CA344462

申请日：1980-01-28

Applicant: IBM

Inventor： ARMITAGE JOHN D JR ,  BARKLEY JOHN A ,  HOOKER ROSS B III ,  WALKER JAMES R

IPC: B41J2/45 ,  G03G15/04 ,  G03G15/043 ,  G03G15/047 ,  G03G21/14 ,  G03G15/22

Abstract: LIGHT PIPE FOR ACCURATE ERASURE OF PHOTOCONDUCTOR CHARGE Erase apparatus for use in an electrophotographic copier machine where an array of light-emitting diodes (LEDs) are placed adjacent one end of a light channel with the other end adjacent a moving photoreceptive surface. The channel allows light rays to pass freely from LED to LED but contains the rays in a direction parallel to the direction of photoreceptor movement. The channel may be comprised of sides with reflective surfaces normal to the photoreceptive surface or may be a solid plastic sheet through which the rays pass. In the latter embodiment, rays are internally reflected from the surfaces of the plastic sheet. BO978013

公开(公告)号：CA1119242A

公开(公告)日：1982-03-02

申请号：CA361884

申请日：1980-09-26

Applicant: IBM

Inventor： BARKLEY JOHN A

IPC: G03G21/06 ,  G03G13/02 ,  G03G15/02 ,  G03G15/22 ,  G03G21/00 ,  G03G21/10

Abstract: Process for eliminating the need for a separate cleaning station in a one-cycle electophotographic document copier machine of the transfer type. A backcharge corona generator is added to provide an overcharge/backcharge process to obtain the desired level of charge on the photoconductive system prior to exposure of the photoreceptor to the subject. In that manner, residual toner remaining on the photoconductor after production of the previous copy is cleaned simultaneously with the development of the succeeding copy. B0979032