-
公开(公告)号：CA2041544A1
公开(公告)日：1991-11-17
申请号：CA2041544
申请日：1991-04-30
Applicant: IBM
Inventor： ELDRIDGE JEROME M , KELLER GARY S , LEE FRANCIS C , OLIVE GRAHAM
Abstract: A thermal drop-on-demand ink jet print head in which conductor electrodes are formed on opposed surfaces of a print head substrate and extend to the edge of the substrate. An array of heater elements is formed on the edge of the substrate in electrical contact with the conductor electrodes. A nozzle plate is mounted with a nozzle aligned with each heater element, and a manifold is positioned to provide ink to the space between the nozzle plate and the edge of the substrate so that a drop of ink can be ejected from the nozzle each time the associated heater element is energized with a data pulse applied to a selected one of the conductor electrodes.
-
Patent Agency Ranking
公开(公告)号：SG71913A1
公开(公告)日：2000-04-18
申请号：SG1999001201
申请日：1999-03-17
Applicant: IBM
Inventor： HUANG FU-YING , IMAINO WAYNE ISAMI , LEE FRANCIS C
Abstract: An active control mechanism and method for stabilizing a servo-controlled actuator system such as an actuator system in a data recording disk drive by compensating the vibrational modes of the actuator's arm assembly. The control mechanism has a sensing arrangement which can include one or more individual sensors attached to the actuator at locations where they generate signals in phase with the vibrational modes, and especially with all the major vibrational modes, of the arm assembly. A control mechanism derives from the signals an adjustment signal consisting of three corrective terms-a stiffening correction, an active damping correction and an inertia reduction correction-and the adjustment signal is used in the feedback control loop to stabilize the actuator system.
-
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
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：CA1310227C
公开(公告)日：1992-11-17
申请号：CA564156
申请日：1988-04-14
Applicant: IBM
Inventor： ELDRIDGE JEROME M , KELLER GARY S , LEE FRANCIS C , NELSON GEORGE N , OLIVE GRAHAM
Abstract: THERMAL DROP-ON-DEMAND INK JET PRINT HEAD A thermal drop-on-demand ink jet print head in which an array of heating means is provided on one surface of a substrate member. A common electrode provides electrical contact to the heating means, and an array of data electrodes provides electrical contact to individual ones of the heating means. An array of feed through conductors is provided which pass through to the opposite surface of the substrate member to provide electrical contact between one of the data electrodes and one of an array of conductors leading to spaced solder pads on the opposite surface of the substrate member. A nozzle plate is mounted adjacent to the substrate member with a nozzle adjacent to each of the heating means so that, upon connection of an electrical signal to one of the solder pads, the corresponding heating means is energized and a drop of ink is ejected from the adjacent nozzle. Various embodiments are described in which multiplexing techniques are used to achieve a reduction in electrical connections and electronic drivers.
-
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
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
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.
-
-
-
-
-
Search Results
6
records
(took 0.016 seconds)
