公开(公告)号：CA1245277A

公开(公告)日：1988-11-22

申请号：CA533595

申请日：1987-04-01

Applicant: IBM

Inventor： BEARDSLEY GARY S ,  LEE MICHAEL H

IPC: G03G15/08 ,  G03G15/09 ,  G03G15/22 ,  G03G21/00

Abstract: of the Invention VOLTAGE CONTROL BAR FOR ELECTROPHOTOGRAPHY An electrophotographic apparatus is provided with an electrically conductive voltage control bar between the photoconductor drum or belt and the developer or developer/cleaner roll. The voltage control bar prevents toner filming on said cleaning roll, and makes it possible for that roll to be made of an insulating material such as molded plastic.

公开(公告)号：CA1250176A

公开(公告)日：1989-02-21

申请号：CA426780

申请日：1983-04-27

Applicant: IBM

Inventor： LEE MICHAEL H ,  ONTON AARE ,  WIEDER HAROLD

IPC: B41M5/26 ,  G01D15/34 ,  G11B7/243 ,  G11B7/24

Abstract: OPTICAL RECORDING MEDIUM An optical recording medium comprising adjacent thin layers of two different materials, which, upon marking with an energy beam, form a marked area comprising an alloy or mixture of the two materials. The optical properties of the marked area has contrast sufficiently different from the optical properties of the unmarked area so that the marked area can be reliably sensed. One of the first of the thin layers comprises a metal and the other of the thin layers comprises a metal or a semiconductor. The metals are taken from the group comprising Al, Au, Pb and Sn and the semiconductors are chosen from the group comprising Ge and Si.