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1.发明授权Method and apparatus for controlling satellites in an ink jet printing system 失效用于控制喷墨打印系统中的卫星的方法和装置
公开(公告)号：US3928855A
公开(公告)日：1975-12-23
申请号：US53391374
申请日：1974-12-18
Applicant: IBM
Inventor： HELINSKI EDWARD F , LEE HO C , ZABLE JACK L
CPC classification number: B41J2/12
Abstract: A continuous jet stream of a ferrofluid ink is broken into individual drops by an asymmetrical perturbation force applied to the stream. The ink, as it exits from an orifice under pressure, is excited by an electromagnetic transducer energized with an asymmetrical excitation signal having a fundamental and higher harmonics. An asymmetrical excitation signal, such as a sawtooth, having a substantial second and/or third harmonics content which produce an excitation signal with different rise and fall times can form a stream of drops free of satellites. Asymmetry of magnetic field forces can be produced with single stage or multistage transducers located at spaced positions along the stream. Asymmetry can also be produced using an electromagnetic transducer having a non-uniform gap.
Abstract translation: 通过施加到流的不对称扰动力将铁磁流体油墨的连续喷射流分解成单独的液滴。 油墨在压力下从孔口排出时，被具有基波和高次谐波的非对称激励信号激励的电磁换能器激发。 具有实质上的第二和/或第三谐波内容的不对称激励信号，例如锯齿波产生具有不同上升和下降时间的激励信号，可以形成不含卫星的液滴流。 可以通过沿着流的间隔位置的单级或多级换能器产生磁场力的不对称性。 也可以使用具有不均匀间隙的电磁换能器来产生不对称性。
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公开(公告)号：CA1186944A
公开(公告)日：1985-05-14
申请号：CA414914
申请日：1982-11-04
Applicant: IBM
Inventor： LEE HO C , RICKENBACH DAVID H , WOLFERT GERHARD A , ZABLE JACK L
Abstract: ELECTROMAGNETIC PRINT HAMMER COIL ASSEMBLY A heat exchange system for an electromagnetically operated print hammer of a print hammer bank provides internal and external heat transfer for the operating windings. A non-magnetic metal bobbin of the heat exchange system provides conductive transfer of heat from the interior of the operating winding to the magnetic core. Flat parallel plates of magnetic material are attached to the sides of the operating winding for external heat transfer and magnetic flux shielding. The plates may have multiple laminations having different saturation and permeability characteristics.
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公开(公告)号：CA1139004A
公开(公告)日：1983-01-04
申请号：CA352816
申请日：1980-05-27
Applicant: IBM
Inventor： LEE HO C , RICKENBACH DAVID H , ZABLE JACK L
Abstract: ELECTRO-MAGNETIC PRINT HAMMER An electro-magnetic print hammer comprises a single magnetic hammer element in which an impact mass is coupled to a pivotted armature by flexible stem. The hammer-stem has (N+1/2) periods of oscillation at its resonant frequency during the free flight time of the hammer mass. A permanent magnet with a strong magnetic force which decays rapidly with distance holds the hammer element fixed upon motion of the armature until the armature torque exceeds the magnet holding force to cause -the hammer mass to break loose with a snap action. Stop means prevents armature impacts with the operating pole piece of a stator core. The visco-elasticity of the armature stop matches the rebound characteristics of the print medium when impacted by the hammer mass.
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公开(公告)号：CA1098160A
公开(公告)日：1981-03-24
申请号：CA287943
申请日：1977-10-03
Applicant: IBM
Inventor： JENSEN DONALD F , TAMULIS JOHN C , TOMASKY THOMAS , ZABLE JACK L
Abstract: METHOD AND APPARATUS FOR CONTROLLING THE VELOCITY OF INK DROPS IN AN INK JET PRINTER In an ink jet printer, drops are generated at a test frequency which is a harmonic of the drop generation rate for printing. If an error in velocity is detected at the test frequency, a coarse correction velocity is made to bring the correct number of drops within the range of onehalf the wavelength at the nth drop location relative to a drop detector. Drops are then generated at the printing frequency and a fine correction in the velocity is made if a velocity error is detected.
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Patent Agency Ranking
公开(公告)号：FR2294849A1
公开(公告)日：1976-07-16
申请号：FR7533873
申请日：1975-10-29
Applicant: IBM
Inventor： HELINSKI EDWARD F , ZABLE JACK L
IPC: B41J2/075 , B41J2/02 , B41J2/035 , B41J2/10 , G06K15/10 , G06K15/22 , H04N1/034 , B41J3/04 , B41J27/18
Abstract: In an ink jet recorder, a ferrofluid ink is supplied under pressure to a nozzle to form a continuous ink jet stream. The jet stream is subjected to two or more perturbation forces out-of-phase with each other causing the satellites and drops to fast merge. Plural electromagnetic transducers are located at spaced locations along the stream and energized to produce out-of-phase perturbations on the stream. The spacing of the transducers is differentially related to spacing of varicosities or ink drops produced by first transducer. The out-of-phase perturbations can also be obtained using an electromechanical transducer and electromagnetic transducers located out-of-phase or energized out-of-phase with each other.
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公开(公告)号：CA1056439A
公开(公告)日：1979-06-12
申请号：CA238098
申请日：1975-10-20
Applicant: IBM
Inventor： HELINSKI EDWARD F , LEE HO C , ZABLE JACK L
Abstract: METHOD AND APPARATUS FOR CONTROLLING SATELLITES IN AN INK JET PRINTING SYSTEM A continuous jet stream of a ferrofluid ink is broken into individual drops by an asymmetrical perturbation force applied to the stream. The ink, as it exits from an orifice under pressure, is excited by an electromagnetic transducer energized with an asymmetrical excitation signal having a fundamental and higher harmonics. An asymmetrical excitation signal, such as a sawtooth, having a substantial second and/or third harmonics content which produce an excitation signal with different rise and fall times can form a stream of drops free of satellites. Asymmetry of magnetic field forces can be produced with single stage or multi-stage transducers located at spaced positions along the stream. Asymmetry can also be produced using an electromagnetic transducer having a non-uniform gap.
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公开(公告)号：CA1039790A
公开(公告)日：1978-10-03
申请号：CA238097
申请日：1975-10-20
Applicant: IBM
Inventor： HELINSKI EDWARD F , ZABLE JACK L
Abstract: METHOD AND APPARATUS FOR MERGING SATELLITES IN AN INK JET PRINTING SYSTEM In an ink jet recorder, a ferrofluid ink is supplied under pressure to a nozzle to form a continuous ink jet stream. The jet stream is subjected to two or more perturbation forces out-of-phase with each other causing the satellites and drops to fast merge. Plural electromagnetic transducers are located at spaced locations along the stream and energized to produce out-of-phase perturbations on the stream. The spacing of the transducers is differentially related to spacing of varicosities or ink drops produced by first transducer. The out-of-phase perturbations can also be obtained using an electromechanical transducer and electromagnetic transducers located out-of-phase or energized out-of-phase with each other.
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公开(公告)号：FR2370521A1
公开(公告)日：1978-06-09
申请号：FR7729868
申请日：1977-09-28
Applicant: IBM
Inventor： JANSEN DONALD F , TAMULIS JOHN C , TOMASKY THOMAS , ZABLE JACK L
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公开(公告)号：FR2294848A1
公开(公告)日：1976-07-16
申请号：FR7533289
申请日：1975-10-24
Applicant: IBM
Inventor： HELINSKI EDWARD F , LEE HO CHONG , ZABLE JACK L
Abstract: A continuous jet stream of a ferrofluid ink is broken into individual drops by an asymmetrical perturbation force applied to the stream. The ink, as it exits from an orifice under pressure, is excited by an electromagnetic transducer energized with an asymmetrical excitation signal having a fundamental and higher harmonics. An asymmetrical excitation signal, such as a sawtooth, having a substantial second and/or third harmonics content which produce an excitation signal with different rise and fall times can form a stream of drops free of satellites. Asymmetry of magnetic field forces can be produced with single stage or multi-stage transducers located at spaced positions along the stream. Asymmetry can also be produced using an electromagnetic transducer having a non-uniform gap.
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