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61.发明专利
公开(公告)号：JP2001129987A
公开(公告)日：2001-05-15
申请号：JP2000318870
申请日：2000-10-19
Applicant: XEROX CORP
Inventor： BAKER LAMAR T , BUHLER STEVEN A , ELHATEM ABDUL M , ELROD SCOTT A , HADIMIOGLU BABUR B , LERMA JAIME , YAZDY MOSTAFA R
Abstract: PROBLEM TO BE SOLVED: To correct the non-evenness of the size of individual liquid droplets and the ejection velocity of an acoustic ink jet printing head. SOLUTION: Control signals CS1-CS32 control appropriate switches Z1 respectively and also control time for an RF signal to be applied to each of transducers 52 and lasting time of the application. In this case, the pulse width of the control signal CS1-CS32 can be changed based on the correction data of a reference table 66. The ascending edge of the control signals CS1-CS32 is retarded but the descending edge is not changed, based on correction data and thus the pulse width of the control signals CS1-CS32 is modulated. The liquid droplet size or the ejection velocity is controlled using the modulation of the pulse width.
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公开(公告)号：JP2001150662A
公开(公告)日：2001-06-05
申请号：JP2000352317
申请日：2000-11-20
Applicant: XEROX CORP
Inventor： BAKER LAMAR T , STEVEN A BALLER , SCOTT ERURODDO , WILLIAM F GANNING , HADIMIOGLU BABUR B , EL HATEM ABDUL M , ROY JOY , STEARNS RICHARD
Abstract: PROBLEM TO BE SOLVED: To reduce the effect of a parasitic current passage occurring in a switching matrix for controlling the ejector in an acoustic ink printer. SOLUTION: In a switching matrix 60, a non-select column is connected with a column compensation bus 54 through a capacitor 52. When a transducer 20a at row 0 and column 0 is selected, for example, a current flowing from row 12a to a column other than column 0 is drawn out from that column to the column compensation bus 54. Consequently, the current flowing through a parasitic current passage returning from that column to column 0 (e.g. a passage comprising transducers 20d, 20e including the signal line 12b of that column other than row 0) is reduced.
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公开(公告)号：JP2001038901A
公开(公告)日：2001-02-13
申请号：JP2000214071
申请日：2000-07-14
Applicant: XEROX CORP
Inventor： ROY JOY , WEISBERG MICHAEL C , ELKIN JERRY , HADIMIOGLU BABUR B
Abstract: PROBLEM TO BE SOLVED: To maintain a pressure of a channel to be constant, restrict an increase of a liquid temperature to a minimum and obtain a sufficient liquid replenishment rate and a high flow velocity by setting a liquid flow chamber between a first substrate and a second substrate, and constituting part of a liquid flow to flow in an equal direction to a length of an array of acoustic waves. SOLUTION: A liquid drop generator 40 has a base substrate 42, with transducers 46 set to one surface and acoustic lenses 44 set to the other surface. What is separated from the base substrate 42 is a liquid level control plate 56. The base substrate 42 and liquid level control plate 56 limit a channel for holding a flowing liquid 52. The liquid level control plate 56 includes an array 54 of openings 60. The transducers 46, acoustic lenses 44 and openings 60 are all aligned in an axis direction. Acoustic waves generated by the transducers 46 are nearly converged by the acoustic lenses 44 to free surfaces 58 of the liquid 52 in the openings 60. Liquid drops are emitted when a sufficient power is obtained.
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公开(公告)号：JP2003118102A
公开(公告)日：2003-04-23
申请号：JP2002265056
申请日：2002-09-11
Applicant: XEROX CORP
Inventor： HADIMIOGLU BABUR B , ELLSON RICHARD N
Abstract: PROBLEM TO BE SOLVED: To reduce cross talks between neighbor ejectors and lessen serious printing head traces by defective ejectors. SOLUTION: An acoustic printing head having an array of ejectors arranged in a plurality of rows and columns and controllable individually is used. A first ejector selected in a selected column is specified as an odd-number ejector of the selected column, and a first firing sequence is generated for the first selected ejector. Subsequently, a second ejector immediately adjacent to the first ejector is selected and specified as an even-number ejector. A second firing sequence is generated for the second selected ejector. The first and the second firing sequences drive the first ejector and the second ejector within non concurrent periods. When the defective ejector is detected in the array, an operable ejector for firing into the same substrate region is detected, and both its own firing sequence and the firing sequence of the defective ejector are carried out.
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公开(公告)号：JP2002236128A
公开(公告)日：2002-08-23
申请号：JP2001354720
申请日：2001-11-20
Applicant: XEROX CORP
Inventor： BRUCE RICHARD H , ELROD SCOTT A , NOOLANDI JAAN , HORINE DAVID A , HADIMIOGLU BABUR B
Abstract: PROBLEM TO BE SOLVED: To provide a method for accurately inspecting whether a biofluid discharge ejector included in a multiple ejector system normally operates or not. SOLUTION: The method for inspecting whether the droplet discharge unit included in the multiple ejector system is in normal operation or not comprises scanning a test substrate having discharged the fluid and detecting whether a vacuum unit corresponding to the specific droplet discharge unit has released the fluid or not.
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Patent Agency Ranking
公开(公告)号：JP2002221470A
公开(公告)日：2002-08-09
申请号：JP2001350600
申请日：2001-11-15
Applicant: XEROX CORP
Inventor： NOOLANDI JAAN , HORINE DAVID A , HADIMIOGLU BABUR B , BRUCE RICHARD H , ROY JOY , ELROD SCOTT A
Abstract: PROBLEM TO BE SOLVED: To provide an improved organic liquid particle discharging device. SOLUTION: A organic liquid particle discharging mechanism comprises a transducer which generates an energy used to discharge organic liquid particles, and a chemical cartridge which is a organic liquid holder holding an organic liquid. The chemical cartridge has such structure as to hold a small volume of the organic liquid, with the organic liquid avoided from contaminated. The chemical cartridge is connected to the liquid particle discharging mechanism when actuated so that the organic liquid particles are discharged when the liquid particle discharging mechanism is actuated. The liquid particle discharging mechanism is very efficient, capable of configured as a two-piece type device or as a one-piece type disporsable device.
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公开(公告)号：JP2000185398A
公开(公告)日：2000-07-04
申请号：JP36103799
申请日：1999-12-20
Applicant: XEROX CORP
Inventor： WONG KAISER H , STEINMETZ DAVID , ELROD SCOTT A , HADIMIOGLU BABUR B
Abstract: PROBLEM TO BE SOLVED: To discharge a hot melt ink in an acoustic ink printhead by disposing an ink reservoir between a lower surface of a porous plate disposed on a solid low sound wave attenuating element disposed on an acoustic lens and an upper surface of the solid low sound wave attenuating element. SOLUTION: An acoustic lens 76 for arriving an acoustic energy from any one transducer 12 starting during an operation after passing a base 14 passes the energy through a pedestal 62 of a pedestal carrier 60 for disposing a polyimide planar layer 78 and a meta porous plate 80 on an uppermost surface. Thereafter, when a sound wave concentrated at an infinitesimal focal region on a surface of an ink is moved along a longer route of a hot melt ink having a high viscosity, a high viscosity material highly attenuates the sound wave to affect an adverse influence to transmission of the energy, but a plastic material of the pedestal 62 brings a shorter attenuating route to the wave to increase a ratio of energy movement to the ink surface 86.
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公开(公告)号：JP2002286713A
公开(公告)日：2002-10-03
申请号：JP2002022247
申请日：2002-01-30
Applicant: XEROX CORP
Inventor： BRUCE RICHARD H , ELROD SCOTT A , HADIMIOGLU BABUR B , HORINE DAVID A , NOOLANDI JAAN , ROY JOY , SPRAGUE ROBERT A
Abstract: PROBLEM TO BE SOLVED: To provide a method and mechanism to ensure the quality control of printed biological assays. SOLUTION: Various bio-fluids put fully in a multiple ejector system comprising a plurality of individual fluid drop ejectors are printed on a base board 172 as fluid drops 174. Each bio-fluid includes at least a carrier fluid, a bio- substance used in the test, and a marker such as fluorescent dyes. When the biological assays 170 formed from bio-fluid drops are printed, it is scanned by a scanner 176 capable of sensing the marker, and a signature output signal for respective fluid drop is determined. This signature output represents a signal from respective fluorescent marker included in the bio-fluid. Then the signature output determined by the scanning is compared with a predicted signal output for the bio-fluid put fully in the corresponding fluid drop ejector, and thus quality control is conducted.
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69.发明专利
公开(公告)号：JP2002228672A
公开(公告)日：2002-08-14
申请号：JP2001339603
申请日：2001-11-05
Applicant: XEROX CORP
Inventor： HORINE DAVID A , HADIMIOGLU BABUR B , BRUCE RICHARD H , ELROD SCOTT A , NOOLANDI JAAN
Abstract: PROBLEM TO BE SOLVED: To provide an organism liquid level-controlling mechanism that is used for an organism liquid drip discharging device having a satisfactory shape while no organism liquid drips to be discharged are contaminated. SOLUTION: The organism liquid drip discharging device has an acoustic type liquid drip-discharging mechanism 14 where a transducer is provided, and retains organism liquid 38 where an organism liquid cartridge 12 is provided separately from the mechanism 14. When the acoustic liquid drip-discharging mechanism 14 is operated, energy that is generated by the transducer is gathered while focusing on the liquid surface of the organism liquid cartridge 12 by a Fresnel lens 22 via acoustic coupling liquid, and the organism liquid 38 is discharged in a liquid drip shape. When the height of the organism liquid 38 in the organism liquid cartridge 12 becomes a certain level or less, additional acoustic coupling fluid is supplied by a plunger 96, and the height of the entire organism liquid cartridge 12 is increased, thus adjusting the height in the organism liquid level.
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公开(公告)号：JP2002221526A
公开(公告)日：2002-08-09
申请号：JP2001354712
申请日：2001-11-20
Applicant: XEROX CORP
Inventor： HADIMIOGLU BABUR B , ELROD SCOTT A , BRUCE RICHARD H , NOOLANDI JAAN , HORINE DAVID A
Abstract: PROBLEM TO BE SOLVED: To resolve a problem that a conventional bio-fluid discharging ejector causes much biological pollution and its function for correctly dripping bio- droplets is low, and the volume of each bio-droplet is large so that a large number of bio-droplets are needed. SOLUTION: The problem can be resolved by providing a plate having plural sets of pins extending outward from its surface, a printed wiring board having at least one power connection pin extending from its surface, and plural droplet discharging units 10 each including positioning slots 48 and 50 and a transducer 16, and mounted by fitting the positioning slots 48 and 50 to at least one of the sets of pins, for a multi-ejector system for discharging an array of a bio-fluid as the droplets.
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