公开(公告)号：DE2724548A1

公开(公告)日：1977-12-15

申请号：DE2724548

申请日：1977-05-31

Applicant: IBM

Inventor： PERRY FRANCIS JAMES ,  VESCI ANTHONY

IPC: B05B9/00 ,  B41J2/175 ,  G01D15/18 ,  B41J27/00

Abstract: Ink supply system and sequencing for purge, startup, operation, and shutoff of pressurized ink jet systems. Employing an ink jet head having an inlet, startup is accomplished by filling the head with ink, closing an inlet valve, building pressure behind the valve to a level significantly greater than required for operation, and opening the valve. The system includes an inlet valve connecting a pump from a reservoir to the ink jet head, and an outlet valve connecting an outlet from the head to the reservoir and a vacuum source. At shutoff, the inlet valve is closed with the outlet valve open to create a negative pressure in the head.

公开(公告)号：DE2820332A1

公开(公告)日：1978-12-07

申请号：DE2820332

申请日：1978-05-10

Applicant: IBM

Inventor： CHOCHOLATY WARREN LEROY ,  EVANS ROBERT KEITH ,  PERRY FRANCIS JAMES

IPC: G05B11/16 ,  B41J2/195 ,  G01N9/10 ,  G01N9/18 ,  G01N15/06 ,  G05D21/00 ,  B41J27/00

Abstract: Apparatus and method for detecting and correcting for evaporation from recirculated unused ink drops in an ink jet printer. The specific gravity of the recirculating ink is compared with that of a standard by measuring the time of fall of heavy floats through reservoirs of circulated and uncirculated fluid. A significant difference in fall times is compensated by the replenishment of fluid in the recirculating ink supply.

公开(公告)号：DE2722244A1

公开(公告)日：1977-12-01

申请号：DE2722244

申请日：1977-05-17

Applicant: IBM

Inventor： PERRY FRANCIS JAMES ,  VESCI ANTHONY

IPC: G05D16/00 ,  B41J2/175 ,  G05D16/20 ,  B41J27/00

Abstract: A high pressure fluid source is connected to a primary orifice and a valved orifice of a binarily activated pressure regulator. The primary orifice alone supplies the fluid at a pressure below the minimum desired, and both orifices together supply the fluid at a pressure greater than the maximum desired. A sensor at the output is adjusted to open the binary valve when the minimum pressure is reached, and close the valve when the maximum pressure is reached, thus cycling between the two conditions.

公开(公告)号：DE2826049A1

公开(公告)日：1979-01-18

申请号：DE2826049

申请日：1978-06-14

Applicant: IBM

Inventor： ALT RICHARD CURTIS ,  PERRY FRANCIS JAMES

IPC: B41J2/18 ,  B41J2/085 ,  B41J2/09 ,  B41J2/185 ,  B41J3/04

Abstract: An ink jet printer enploys a wire mesh gutter electrode assembly and a wire mesh high voltage electrode, each having angled or skewed configurations geometrically related for providing a relatively narrow constricted path for ink droplets, so charged and partially charged droplets, which are not used for imprinting, traverse a short path and are effectively captured and collected for recirculation and use in the ink recording process.

公开(公告)号：DE2806360A1

公开(公告)日：1978-08-31

申请号：DE2806360

申请日：1978-02-15

Applicant: IBM

Inventor： HOSKINS PHILLIP KEITH ,  JOHNSON HARMON WESELY ,  DARLING RICHARD HAROLD ,  PERRY FRANCIS JAMES

IPC: B41J2/125 ,  B41J2/13 ,  B41J19/20 ,  G06K15/10 ,  B41J3/04

公开(公告)号：CH614663A5

公开(公告)日：1979-12-14

申请号：CH50878

申请日：1978-01-18

Applicant: IBM

Inventor： HOSKINS PHILIP KEITH ,  JOHNSON HARMON WESELY ,  DARLING RICHARD HAROLD ,  PERRY FRANCIS JAMES

IPC: B41J2/125 ,  B41J2/13 ,  B41J19/20 ,  G06K15/10 ,  B41J3/04 ,  G06K15/02

公开(公告)号：DE2247648A1

公开(公告)日：1973-06-28

申请号：DE2247648

申请日：1972-09-28

Applicant: IBM

Inventor： PERRY FRANCIS JAMES ,  SCHACHT GUENTER HEINZ

IPC: B41J1/20 ,  B41J7/24

Abstract: A plurality of type carriers of U-shaped configuration are provided with legs of increasing width which overlap the legs of the adjacent type carriers to provide stability and close spacing of type characters between adjacent type carriers.