公开(公告)号：CA1001215A

公开(公告)日：1976-12-07

申请号：CA201976

申请日：1974-06-07

Applicant: IBM

Inventor： CHEN WINSTON H

IPC: B41J2/08 ,  B41J2/075 ,  G06K15/10 ,  H04N1/034 ,  H04N1/23

Abstract: Every other drop in an ink jet printer is charged for use in printing, and intervening drops are charged negatively with a charge proportional to the charge on the preceding drop.

公开(公告)号：FR2276652A1

公开(公告)日：1976-01-23

申请号：FR7516537

申请日：1975-05-21

Applicant: IBM

Inventor： CHEN WINSTON H ,  LEE HO C

IPC: B41J2/205 ,  B41J2/21 ,  G06K15/10 ,  H04N1/23 ,  G11B11/02

Abstract: Method of recording with a stream of marking fluid drops in which a predetermined plurality of successively formed drops in a stream each have the same electrical charge induced therein so that, when subsequently subjected to an electrostatic field, all drops of one commonly charged plurality will impact a record member at approximately the same spot. Drop charges are induced therein by asynchronously applied charging signal levels, each having a duration which is a function of the drop formation frequency and equal to at least two drop periods.

公开(公告)号：CA1051502A

公开(公告)日：1979-03-27

申请号：CA277286

申请日：1977-04-29

Applicant: IBM

Inventor： CHEN WINSTON H ,  TITCOMB STANLEY C

IPC: B41J2/205 ,  B41J2/21 ,  G01D15/18

Abstract: Ink jet print spot intensity is modulated by controlling the volume of ink per print spot to compensate for various paper, environmental and ink characteristics, and thereby attain uniform print quality.

公开(公告)号：FR2352671A1

公开(公告)日：1977-12-23

申请号：FR7712664

申请日：1977-04-22

Applicant: IBM

Inventor： CHEN WINSTON H ,  TITCOMB STANLEY C

IPC: B41J2/205 ,  B41J2/21 ,  B41J3/04 ,  B41J27/18

Abstract: Ink jet print spot intensity is modulated by controlling the volume of ink per print spot to compensate for various paper, environmental and ink characteristics, and thereby attain uniform print quality.

公开(公告)号：CA1033403A

公开(公告)日：1978-06-20

申请号：CA225803

申请日：1975-04-23

Applicant: IBM

Inventor： CHEN WINSTON H ,  LEE HO C

IPC: B41J2/205 ,  B41J2/21 ,  G06K15/10 ,  H04N1/23

Abstract: Method of recording with a stream of marking fluid drops in which a predetermined plurality of successively formed drops in a stream each have the same electrical charge induced therein so that, when subsequently subjected to an electrostatic field, all drops of one commonly charged plurality will impact a record member at approximately the same spot. Drop charges are induced therein by asynchronously applied charging signal levels, each having a duration which is a function of the drop formation frequency and equal to at least two drop periods.

公开(公告)号：CA1001217A

公开(公告)日：1976-12-07

申请号：CA209549

申请日：1974-09-19

Applicant: IBM

Inventor： CHEN WINSTON H

IPC: B41J2/205 ,  B41J2/075 ,  B41J2/21 ,  G06K15/10 ,  H04N1/23

Abstract: A base voltage of one polarity and signal voltages of the opposite polarity are applied to the charging electrode of an ink jet printer in selected sequences, so that two or more oppositely charged drops merge in flight to produce larger drops, thus controlling not only the placing of the drops on a document but the density of the printing also.

公开(公告)号：CA1000345A

公开(公告)日：1976-11-23

申请号：CA201559

申请日：1974-06-04

Applicant: IBM

Inventor： CHEN WINSTON H ,  MEIER JOHANN H ,  PIMBLEY WALTER T

IPC: B41J2/215 ,  B41J2/165 ,  B41J2/18 ,  B41J2/185 ,  H04N1/034

Abstract: A device for use in an ink jet printing system which comprises a vapor chamber and means for moving said chamber to enclose the jet nozzles during shut-down period to prevent ink from drying at the nozzle. A sharp edge wall is provided to keep the charging electrodes and deflection plates free from ink spraying at pressure shut-off and means are provided for mounting the charging electrodes for movement out of the jet path prior to shutdown of the printer to prevent ink spraying thereon at pressure shut-off.