公开(公告)号：US3867723A

公开(公告)日：1975-02-18

申请号：US41461473

申请日：1973-11-07

Applicant: IBM

Inventor： PENFOLD ROBERT J ,  TALKE FRANK E ,  THOMPSON PAUL A

IPC: G11B5/48 ,  G11B5/55 ,  G11B17/02 ,  G11B17/30 ,  G11B17/32 ,  G11B5/82 ,  G11B25/04

CPC classification number: G11B17/32 ,  G11B5/48 ,  G11B5/5521 ,  G11B17/02 ,  G11B17/021

Abstract: A disk file includes a pressurized spindle for mounting a multiplicity of flexible disks, and apertured spacers for uniformly spacing and for stabilizing the flexible disks during rotation. Selected adjacent disks are parted by a wedge or knifelike element, and an accessing magnetic head is moved into transducing relation with a selected disk surface.

Abstract translation: 磁盘文件包括用于安装多个柔性盘的加压主轴，以及用于在旋转期间均匀间隔和用于稳定柔性盘的开孔间隔件。 选定的相邻的盘由楔形或刀状元件分开，并且访问磁头移动到与选定的磁盘表面的传感关系中。

公开(公告)号：CA1156706A

公开(公告)日：1983-11-08

申请号：CA356124

申请日：1980-07-14

Applicant: IBM

Inventor： LEE FRANCIS C ,  MILLS ROSS N ,  TALKE FRANK E

IPC: B41J2/045 ,  B41J2/055 ,  B41J3/04

Abstract: INK JET PRINT HEAD HAVING DYNAMIC IMPEDANCE ADJUSTMENT A drop-on-demand ink jet printing apparatus in which the print head has an ink cavity which is filled with ink, and which has an orifice designed so that ink does not flow out under static conditions. A fluid inlet chamber is provided to receive ink from the ink supply and this chamber is separated from the ink cavity by a narrow gap. An electromechanical transducer is mounted adjacent the ink cavity and the inlet chamber. The transducer is selectively energized in response to the print data signals so that, when energized by an electrical signal, the transducer reduces the volume in the ink cavity to eject one ink drop from the orifice and substantially close off the narrow gap to substantially close the flow path from the ink cavity to the inlet chamber during the formation of the drop of ink. SA979006

公开(公告)号：CA1044367A

公开(公告)日：1978-12-12

申请号：CA221753

申请日：1975-03-10

Applicant: IBM

Inventor： NELSON GEORGE N ,  TALKE FRANK E ,  TSENG RAYMOND C

IPC: G11B5/53 ,  G11B5/52 ,  G11B15/61 ,  G11B15/64 ,  G11B5/00 ,  G11B21/20

Abstract: ROTARY HEAD ASSEMBLY FORMING AIR BEARING WITH TAPE In a helical drive tape apparatus, a rotary head drum is disposed between two sections of a split cylindrical mandrel about which a magnetic tape is guided. The head drum supports at least one magnetic transducer at its periphery, so that the total diameter of the head drum and projecting transducer is greater than the diameter of the adjacent mandrel sections. The projecting transducer has a spherical contoured portion and is configured at its leading edge, relative to the moving tape, to form an air bearing between the head and the tape. The spherical contoured portion and configured leading edge both project beyond the outer surface of the mandrel relative to the tape.

公开(公告)号：CA1143780A

公开(公告)日：1983-03-29

申请号：CA349750

申请日：1980-04-14

Applicant: IBM

Inventor： JULIANA ANTHONY JR ,  KOEPCKE RICHARD W ,  MILLS ROSS N ,  TALKE FRANK E

IPC: B41J2/045 ,  B41J2/055 ,  G06K15/10 ,  G01D15/18

Abstract: A drop-on-demand ink jet printer in which the print head includes a cavity having a nozzle portion at one end and a transducer mounted to contract a wall portion of the cavity when energized by a suitable voltage drive pulse. The drive pulses are produced at a predetermined rate but at a selectively controlled amplitude in response to the print data. In cases where no drop is required to print the data, the drive pulse is at a lower amplitude than the threshold voltage level, and for the first drop to be formed following a time at which no drop was formed, the amplitude of the drive pulse is greater than the threshold voltage level, At steady state operation of producing drops in sequence, the amplitude of the drive pulses equals the threshold voltage level.

公开(公告)号：CA1204337A

公开(公告)日：1986-05-13

申请号：CA465438

申请日：1984-10-15

Applicant: IBM

Inventor： LEE FRANCIS C ,  MILLS ROSS N ,  PAYNE ROBERT N ,  TALKE FRANK E

IPC: B41J2/045 ,  B41J2/055 ,  B41J2/205 ,  B41J2/21 ,  B41J3/04

Abstract: SPOT SIZE MODULATION USING MULTIPLE PULSE RESONANCE DROP EJECTION An ink jet drop-on-demand printing system comprising an ink jet print head having an ink cavity supplied with a suitable ink. An electromechanical transducer is mounted in mechanical communication with the ink cavity, and a source of electrical signals is provided to selectively actuate the transducer to produce an ink drop of a selected size. To produce ink drops of a selected size the source of electrical signals produces one or more electrical drive signals each separated by a fixed time delay which is short with respect to the dropon-demand drop production rate. Each electrical drive signal ejects a predetermined volume of ink and all the volumes of ink merge to form a single drop prior to the time the ink drops reach the print medium for printing.

公开(公告)号：CA1191391A

公开(公告)日：1985-08-06

申请号：CA399064

申请日：1982-03-23

Applicant: IBM

Inventor： LEE FRANCIS C ,  MILLS ROSS N ,  TALKE FRANK E

IPC: B41J2/045 ,  B41J2/055 ,  B41J2/14 ,  B41J2/155 ,  G01D15/18

Abstract: DROP-ON-DEMAND METHOD AND APPARATUS USING CONVERGING NOZZLES AND HIGH VISCOSITY FLUIDS A drop-on-demand ink jet printing method and apparatus in which the print head has an ink cavity which is filled with ink, and which has a nozzle designed so that ink does not flow out under static conditions. An electromechnical transducer is selectively energized in response to print data signals so that, when energized by an electrical signal, the transducer produces a pressure wave in the ink cavity sufficient to eject one ink drop from the nozzle for each signal above a threshold value. The nozzle is a strongly convergent nozzle and the ink has a viscosity up to 100 centipoise. In the preferred embodiment, the nozzle is formed by anisotropic etching in a silicon substrate. An array of print heads produces a line of highresolution printing as the print head array is moved across a print medium.

公开(公告)号：CA1056056A

公开(公告)日：1979-06-05

申请号：CA211526

申请日：1974-10-16

Applicant: IBM

Inventor： PENFOLD ROBERT J ,  TALKE FRANK E ,  THOMPSON PAUL A

IPC: G11B5/48 ,  G11B5/55 ,  G11B17/02 ,  G11B17/30 ,  G11B17/32 ,  G11B5/82 ,  G11B25/04

Abstract: MULTIPLE FLEXIBLE DISK FILE A disk file includes a pressurized spindle for mounting a multiplicity of flexible disks, and apertured spacers for uniformly spacing and for stabilizing the flexible disks during rotation. Selected adjacent disks are parted by a wedge or knife-like element, and an accessing magnetic head is moved into transducing relation with a selected disk surface.