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公开(公告)号：DE3372271D1
公开(公告)日：1987-08-06
申请号：DE3372271
申请日：1983-04-05
Applicant: IBM DEUTSCHLAND , IBM
IPC: H04N1/032 , B41J25/304 , B41J25/312 , B41J25/316 , G01D15/22 , B41J3/20
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公开(公告)号：DE3277130D1
公开(公告)日：1987-10-08
申请号：DE3277130
申请日：1982-03-25
Applicant: IBM DEUTSCHLAND , IBM
Inventor： BAHR JURGEN DR , BURCKARDT KARL-H , GOLDRIAN GOTTFRIED DIPL ING , RUDOLPH VOLKER DR , SPRUTH WILHELM G DR
Abstract: The invention concerns a method of recording information on an electrosensitive record carrier, preferably a record carrier covered with a metallic or metalliferous layer, by means of a print head movable relatively parallel to the surface of the record carrier and comprising at least one print electrode controllable by print pulses, and a control circuit for the timely generation of the print pulses from digital or analog signals received in such a manner that the duration and amplitude of each print current pulse are chosen so that the print process triggered by the individual print pulse is completed by the time the print pulse stops.
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公开(公告)号：DE3276960D1
公开(公告)日：1987-09-17
申请号：DE3276960
申请日：1982-03-25
Applicant: IBM DEUTSCHLAND , IBM
Inventor： GOLDRIAN GOTTFRIED DIPL ING , RUDOLPH VOLKER DR , WOHNSDORF MANFRED
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公开(公告)号：DE3271524D1
公开(公告)日：1986-07-10
申请号：DE3271524
申请日：1982-03-25
Applicant: IBM DEUTSCHLAND , IBM
Inventor： GOLDRIAN GOTTFRIED , RUDOLPH VOLKER DR
IPC: B41J2/425 , G01D15/08 , H03K17/0422 , H04N1/23 , B41J3/20
Abstract: To obtain a good print quality in metal paper printers, the print current, after ignition of the arc, must be rapidly reduced to a fraction of the value necessary for ignition. For this purpose, two transistor power stages (T3, T4) are connected to the print electrode (2). Their partial currents form the print current, whose rapid reduction after ignition of the arc is obtained by the two transistor power stages being operated at voltages (U2, U3) of different magnitude. The second transistor stage (T4) is operated at a voltage (U3), whose magnitude corresponds to the drop in potential occurring upon ignition between the grounded metal layer (3) of the record carrier (4) and the print electrode. As a result, the second transistor stage is switched off when a diode (D) connected to it becomes non-conductive.
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公开(公告)号：DE3377078D1
公开(公告)日：1988-07-21
申请号：DE3377078
申请日：1983-03-15
Applicant: IBM DEUTSCHLAND , IBM
Inventor： GOLDRIAN GOTTFRIED DIPL ING , RUDOLPH VOLKER DR
Abstract: The supply circuit has drive stages producing burn pulses of relatively high current and short duration and drive stages producing dwell pulses of relatively low current and long duration. The dwell-pulse stages are actuated before the burn-pulse stages. When a dwell pulse causes ignition then the resulting arc suppresses the generation of a burn pulse. The delay between a dwell pulse and a burn pulse (if one is needed) is 0.1-0.2 times the duration of a burn pulse. The presence of the arc is detected by detecting the voltage drop its presence causes between the electrode and the recording medium.
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Patent Agency Ranking
公开(公告)号：DE3273147D1
公开(公告)日：1986-10-16
申请号：DE3273147
申请日：1982-06-04
Applicant: IBM DEUTSCHLAND , IBM
Inventor： HILPERT FRITZ , KOHM ERICH , RUDOLPH VOLKER DR , WOHNSDORF MANFRED
IPC: B41J2/425 , B41J2/00 , B41J2/28 , B41J3/00 , B41J25/308 , G01D15/22 , B41J3/16 , B41J3/10 , G01D15/24
Abstract: Arrangement for a print head having at least one print electrode and being movable relative to a record carrier transported over a support, and pressed down onto the record carrier by the effect of an actuator, where a first frame piece (4) carrying the print electrode (6) supported in a holder (5) is pivotably fixed, via a spring arrangement (2,3) biasing the print head towards the record carrier, to a second frame piece (1) opposite the first frame piece (4), where furthermore an electromagnetic actuator (9, 10) between the two frame pieces is attached to the second frame piece (1) to which a resilient ferromagnetic armature (14) is also fixed and through its greater bias acting against the bias of the spring arrangement (2, 3) abuts against a non-ferromagnetic stop (15) provided at the first frame piece and facing the end of the armature, which thus lifts the print head against the force of the spring arrangement (2, 3), and where by the operation of the actuator (9, 10), the print electrode ( 6) places itself against the record carrier (7) under the force of the spring arrangement (2, 3).
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公开(公告)号：DE3267765D1
公开(公告)日：1986-01-16
申请号：DE3267765
申请日：1982-06-04
Applicant: IBM DEUTSCHLAND , IBM
Inventor： HILPERT FRITZ , KOHM ERICH , RUDOLPH VOLKER DR , WOHNSDORF MANFRED
Abstract: Print head for an electroerosion printer, with print electrodes arranged in rows and/or columns in a holder, and with at least one slightly shorter sensor electrode at the trailing edge of the print head to control the feeding of the print electrodes compensating their burning-off and/or abrasion, at least the sensor electrode (7) being inclined approximately in the direction of the median normal to the surface of the unprinted lateral surface of the trough-like depression.
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公开(公告)号：DE69032542D1
公开(公告)日：1998-09-10
申请号：DE69032542
申请日：1990-10-27
Applicant: IBM
Inventor： RUDOLPH VOLKER DR , DOEHLE LOTHER , RUPPERT WERNER DIPL ING
Abstract: A method of automatically verifying a signature of an individual with a computer is described. A digitized image with a number of picture elements is established from the signature to be verified. Parameter values to be verified are calculated from this digitized image and are compared with corresponding reference parameter values which were calculated and stored previously. Depending on a comparison of the reference parameter values and the parameter values to be verified it is decided if the signature to be verified is true or false. Various possibilities are described for the calculation of significant parameters. The gravity-center of all densities of all rows and all columns of the digitized image is a parameter which can be used for a preselection. Centers-of-gravity, gravity lines, maximum values and maximum lines, etc. are further significant parameters. Parameters with a very high reliability can be generated by calculating second order polynomials which describe segments of the signature.
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公开(公告)号：DE3068118D1
公开(公告)日：1984-07-12
申请号：DE3068118
申请日：1980-09-15
Applicant: IBM
Inventor： HEUBER KLAUS , KLINK ERICH , RUDOLPH VOLKER DR , WIEDMANN SIEGFRIED DR
IPC: G11C11/414 , G11C11/40 , G11C11/4063 , G11C11/413 , H01L21/822 , H01L21/8229 , H01L27/02 , H01L27/04 , H01L27/102
Abstract: Disclosed is a simulated storage cell structure for use as a reference voltage generator in a semiconductor store fabricated in Merged Transistor Logic (MTL) technology. The simulated storage cell structure includes n elongated regions of P-type diffusion arranged in parallel to each other in an N-type trough of semiconductor material. The elongated P-type regions are alternately designed as collector and Injector strips.
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公开(公告)号：DE69032542T2
公开(公告)日：1999-04-22
申请号：DE69032542
申请日：1990-10-27
Applicant: IBM
Inventor： RUDOLPH VOLKER DR , DOEHLE LOTHER , RUPPERT WERNER DIPL ING
Abstract: A method of automatically verifying a signature of an individual with a computer is described. A digitized image with a number of picture elements is established from the signature to be verified. Parameter values to be verified are calculated from this digitized image and are compared with corresponding reference parameter values which were calculated and stored previously. Depending on a comparison of the reference parameter values and the parameter values to be verified it is decided if the signature to be verified is true or false. Various possibilities are described for the calculation of significant parameters. The gravity-center of all densities of all rows and all columns of the digitized image is a parameter which can be used for a preselection. Centers-of-gravity, gravity lines, maximum values and maximum lines, etc. are further significant parameters. Parameters with a very high reliability can be generated by calculating second order polynomials which describe segments of the signature.
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