公开(公告)号：FR2297448A1

公开(公告)日：1976-08-06

申请号：FR7537710

申请日：1975-12-05

Applicant: IBM

Inventor： CECIL THOMAS F ,  MEECE KERMIT A ,  SIMPSON HENRY W

IPC: G03G21/10 ,  G03G21/00

公开(公告)号：CA1071693A

公开(公告)日：1980-02-12

申请号：CA242839

申请日：1975-12-31

Applicant: IBM

Inventor： CECIL THOMAS F ,  MEECE KERMIT A ,  SIMPSON HENRY W

IPC: G03G21/10 ,  G03G21/00

Abstract: CONTOL OF PHOTOCONDUCTOR CHARGE SOURCES TO FACILITATE PHOTOCONDUCTOR CLEANING DURING RUNOUT An electrophotographic copying apparatus having a triboelectrically charged brush cleaning station which interacts with toner to clean the photoconductor, and charging means operable during the runout cycle to charge drum carried foreign materials to the opposite polarity to that of the brush, such that the foreign materials are readily removed from the photoconductor by the cleaning station.

公开(公告)号：CA1092184A

公开(公告)日：1980-12-23

申请号：CA305983

申请日：1978-06-22

Applicant: IBM

Inventor： MEECE KERMIT A

IPC: B41J2/115 ,  G01D18/00

Abstract: METHOD AND APPARATUS FOR SYNCHRONIZING CHARGING OF DROPLETS OF A PRESSURIZED CONDUCTIVE LIQUID STREAM The application of the voltage on a charge electrode to selectively charge droplets of a pressurized conductive ink stream is synchronized with the break off of the droplets from the stream so that the break off occurs in the third quarter of the time period during which the charge voltage is placed on the charge electrode. To determine in which quarter that break off is occurring, the charge voltage is placed on the charge electrode at the same time fox two adjacent quarters of a cycle during each of the two adjacent cycles in which a disturbance is placed on the stream by drive means such as a transducer, for example, to produce two droplets. During the next application of the charge voltage on the charge electrode, the charge voltage is applied for the last of the prior two adjacent quarters and the next adjacent quarter during two adjacent droplet producing cycles. During the third application of the charge voltage on a charge electrode, the voltage is placed on the charge electrode for the last of the prior two adjacent quarters of the second application and the next adjacent quarter during each of two adjacent droplet producing cycles. The final periodic application results in the charge being placed on the charge electrode during the last of the prior two adjacent quarters of the third application and the next adjacent quarter during each of two adjacent droplet producing cycles. When the charge voltage is applied to the charge electrode at the time of break off, an optical sensor, which is disposed a predetermined distance downstream from the charge electrode, senses a gap between the two charged droplets because they will have repelled each other. This enables determination of the location of the break-off point of the stream with respect to when the charge voltage is placed on the charge electrode so that there can be synchronization between when the charge voltage is applied to the charge electrode and the break-off point of the droplets from the stream.

公开(公告)号：FR2405754A1

公开(公告)日：1979-05-11

申请号：FR7826224

申请日：1978-09-08

Applicant: IBM

Inventor： MEECE KERMIT A ,  TAYLOR THOMAS S

IPC: G01P3/68 ,  B41J2/125 ,  B05B12/00 ,  B41J3/04

公开(公告)号：CA2016944A1

公开(公告)日：1990-12-31

申请号：CA2016944

申请日：1990-05-16

Applicant: IBM

Inventor： BRANDON FRED Y ,  HARDEN JAMES P ,  HORRALL PAUL D ,  LEE TROY A ,  MEECE KERMIT A

IPC: G03G15/14 ,  G03G15/00 ,  G03G21/06 ,  H05F3/02

Abstract: A printing machine includes a charge neutralizing system for neutralizing static charge on sheets of material fed therethrough. The charge neutralizing system includes a grounded wire (47) located in proximity to the sheets for neutralizing charge on the sheets. The charge neutralizing system further includes a grounded conductive brush (81) mounted on a sheet deflector (61) so that one end of the brush (77) contacts sheets as they traverse a first sheet feed path (71) and the other end of the brush (79) contacts sheets are they are routed by the deflector to a second alternative sheet feed path (63). The grounded brush (81) further serves to decelerate the sheet as it exits the printing machine over the second sheet feed path (63).

公开(公告)号：CA1108729A

公开(公告)日：1981-09-08

申请号：CA305789

申请日：1978-06-20

Applicant: IBM

Inventor： MEECE KERMIT A ,  TAYLOR THOMAS S

IPC: G01P3/68 ,  B41J2/125 ,  G01F1/56

Abstract: METHOD AND APPARATUS FOR DETERMINING THE VELOCITY OF A LIQUID STREAM OF DROPLETS A pressurized ink jet stream is broken up into droplets spaced substantially uniform distances by application of a predetermined frequency to the stream. When the velocity of the stream is to be determined, a frequency perturbation is placed in the predetermined frequency to produce a gap in the stream of droplets at a selected distance from the perturbation application point. The presence of the gap is optically sensed at the selected distance by determining when the time period between adjacent droplets at the selected distance exceeds a predetermined period of time. The velocity of the stream is determined in accordance with the time that it takes from the perturbation of the gap until the gap is sensed at the selected distance because of the time period between adjacent droplets exceeding the predetermined period of time. After the velocity of the stream is determined, it is compared with a desired velocity, and corrections in the pressure of the stream are made in accordance with the difference between the determined velocity and the desired velocity and whether the determined velocity is larger or smaller than the desired velocity so that the velocity of the stream can be corrected to be within a predetermined range of the desired velocity.