公开(公告)号：US3327827A

公开(公告)日：1967-06-27

申请号：US52261366

申请日：1966-01-24

Applicant: IBM

Inventor： LAMBIOTTE JOSEPH C

IPC: B41J23/22 ,  F15B5/00 ,  F15B11/06

CPC classification number: F15B5/00 ,  B41J23/22 ,  F15B11/06 ,  F15B2211/705 ,  F15B2211/885

公开(公告)号：CA785089A

公开(公告)日：1968-05-14

申请号：CA785089D

Applicant: IBM

Inventor： LAMBIOTTE JOSEPH C

公开(公告)号：CA1087675A

公开(公告)日：1980-10-14

申请号：CA268526

申请日：1976-12-22

Applicant: IBM

Inventor： DAVIE NEIL R ,  LAMBIOTTE JOSEPH C

IPC: H04N1/23 ,  B41J2/44 ,  G03G15/04 ,  G06K15/12 ,  H04N1/053 ,  H04N1/113 ,  H04N1/12 ,  H04N1/29 ,  H04N1/407

Abstract: FEEDBACK CONTROL FOR LASER DISCHARGE SYSTEM In a xerographic printer wherein an acousto-optic modulator is used to derive a deflected first-order beam of electromagnetic power which raster scans a charged photoconductor to leave a selectively discharged latent image area bordered by a discharged border area; power contents of said first order beam is maintained constant by adjusting the efficiency of the acousto-optic modulator with a closed loop electrical control system. The efficiency of the acousto-optic modulator is adjusted only when the beam is scanning the discharged border area of the photoconductor. By providing a means which allows the power contents of the first order beam to be constant the quality of copies are significantly improved.