公开(公告)号：US3628644A

公开(公告)日：1971-12-21

申请号：US3628644D

申请日：1969-12-22

Applicant: IBM

Inventor： CRALLE WALTER O JR ,  SIMPSON HENRY W ,  KOCKLER BARRY C

IPC: B41J7/02 ,  B41J23/32

CPC classification number: B41J7/02

Abstract: The impact time of an electrically driven-type element is directly sensed and employed to control a direct printer function, such as the impact drive itself or an ancillary printer function such as letter feed or data input control. Actual sensing of the impact point is preferably accomplished by observing the impact-force-induced polarity change of back EMF of a DC motor employed to drive the type element. Back EMF is also employed to control impact drive velocity.

公开(公告)号：US3884572A

公开(公告)日：1975-05-20

申请号：US31797472

申请日：1972-12-26

Applicant: IBM

Inventor： BACON JAMES L ,  SIMPSON HENRY W

IPC: B08B1/04 ,  G03G21/00 ,  G03G21/10 ,  B08B1/02

CPC classification number: G03G21/0058

Abstract: A cleaning apparatus for cleaning the residual toner image from an electrostatic plate of an electrostatic reproduction apparatus incorporates a continuous wiper member having an outer layer of a compliant material which has a resistivity of less than 10 8 ohm.- centimeters and an outer skin thereon. The wiper member is connected to ground. As the wiper member wipingly engages the toner particles, the toner partricles are mechanically dislodged from the surface of the electrostatic plate. Additionally, an image charge is produced on the outer skin surface of the conductive wiper member equal to but opposite in sign from the charge on the toner particles in proximity therewith. This image charge causes the toner particles to adhere to the skin surface as the wiper member moves away from the electrostatic plate regardless of the sign of the toner charge. A further cleaning member is utilized to remove the toner particles from the skin surface of the wiper member which travels in a closed loop past the electrostatic plate and the further cleaning member.

公开(公告)号：US3529222A

公开(公告)日：1970-09-15

申请号：US3529222D

申请日：1968-01-16

Applicant: IBM

Inventor： GAITTEN RONALD E ,  SIMPSON HENRY W

IPC: G05F1/44 ,  H02P5/40 ,  H02J1/04 ,  H02M5/40

CPC classification number: G05F1/44

公开(公告)号：US3513938A

公开(公告)日：1970-05-26

申请号：US3513938D

申请日：1969-06-02

Applicant: IBM

Inventor： BUEHNER WILLIAM L ,  GREER DONALD L ,  MCCORNACK RICHARD W ,  O'BRIAN PAUL L ,  SIMPSON HENRY W

IPC: B41J13/00 ,  B41J29/08 ,  G10K11/16 ,  F01N1/02 ,  H04L15/24

CPC classification number: G10K11/16 ,  B41J29/08