-
公开(公告)号：CA1199220A
公开(公告)日：1986-01-14
申请号：CA423103
申请日：1983-03-08
Applicant: IBM
Inventor： BAHR DIETRICH J , BURCKARDT KARL-HEINZ , GOLDRIAL GOTTFRIED A , RUDOPH VOLKER , SPRUTH WILHELM G
Abstract: METHOD OF RECORDING INFORMATION ON AN ELECTROSENSITIVE RECORD CARRIER 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.
-
公开(公告)号：DE2935800A1
公开(公告)日：1981-04-02
申请号：DE2935800
申请日：1979-09-05
Applicant: IBM DEUTSCHLAND
Inventor： BURCKARDT KARL-HEINZ , BAHR DIETRICH JUERGEN DR ING
Abstract: Step motor control in which a coded emitter disk is formed with a plurality of sensible secondary marks between each pair of primary motor step marks for use as different optional delay times for the generation of a motor advance pulse after a step mark is sensed. A circuit is disclosed to select predetermined ones of the secondary marks which will generate motor advance pulses in a closed loop system. This arrangement of secondary marks permits the elimination of circuits of fixed delays for feedback signals which are inappropriate when the motor load or temperature varies.
-
Patent Agency Ranking
公开(公告)号：CA1164930A
公开(公告)日：1984-04-03
申请号：CA359532
申请日：1980-09-04
Applicant: IBM
Inventor： BAHR DIETRICH J , BURCKARDT KARL-HEINZ
Abstract: QUANTIZED SPEED CONTROL OF A STEPPER MOTOR A coded disk is coupled to a stepper motor to control the speed of the latter. On the periphery of the coded disk are a plurality of equidistant marks, the sensing of each of which generates a motor control pulse. One motor control pulse produces one motor step. Previously, motors have been decelerated by delaying the initiation of the motor control pulses. This is disadvantageous if the speed fluctations occurred prior to the initiation of a motor control pulse, in that the optimum deceleration angle of the motor could not be maintained. In accordance with the invention, several fine marks are provided on the coded disk for each motor step and a motor control pulse is emitted only when a selected one of the fine marks has been sensed. This leads to motor control pulses with rigid angles, and speed fluctations prior to the emission of such pulses no longer produce negative effects. The invention is suitable for the print head control of metal paper printers.
-
-
公开(公告)号：CA1109162A
公开(公告)日：1981-09-15
申请号：CA300355
申请日：1978-04-04
Applicant: IBM
Inventor： BURCKARDT KARL-HEINZ , BAHR DIETRICH J
Abstract: A print head for an electroerosion printer is provided with a plurality of electrodes, each displaced laterally along the print line by a predetermined distance and using a multiplexing circuit to successively condition each of said electrodes for energization to produce a record mark. The circuit further provides for a single line commonly arranged to carry all energizing signals to all electrodes but effective to initiate energization of the electrodes only upon selection by a decoder. The decoder is operable to condition the individual electrodes in accordance with binary coded signals on a plurality of input lines less in number than the number of electrodes to be controlled. In addition, circuits are provided for energizing a pair of electrodes through a portion of a circuit common to both electrodes by rendering the individual electrodes of the pair responsive only to a particular polarity of electrical signal energization. This technique allows the elimination of a number of control leads originally required and reduces the cost of electrode drivers. Electrode spacing is modified slightly to accommodate the multiplexing control.
-
公开(公告)号：CA1104200A
公开(公告)日：1981-06-30
申请号：CA300672
申请日：1978-04-07
Applicant: IBM
Inventor： BAHR DIETRICH J , SPRUTH WILHELM , BURCKARDT KARL-HEINZ
Abstract: PRINT HEAD ELECTRODE FOR METAL PAPER PRINTERS Sheathed electrode for metal paper printer in which the core is of material having a higher melting point than the encasing material. This arrangement permits the use of electrodes having smaller crosssection and attainment of finer resolution since only the core is effective during marking.
-
公开(公告)号：DE2715889A1
公开(公告)日：1978-10-19
申请号：DE2715889
申请日：1977-04-09
Applicant: IBM DEUTSCHLAND
Abstract: Control circuit for a print head of a metal paper printer in which electrodes are arranged on a slope, said electrodes being staggered in horizontal projection by the D-fold of their electrode width. The martrix-like structurized character to be printed consists of individual image elements stored in a main storage. This character information is read out column-by-column and written into predetermined locations of a read/write buffer storage. The write phase is followed by a readout phase of predetermined locations of the buffer storage for the direct addressing of the electrodes of the writing head. Write and read phases alternate. For determining the address of the storage locations during the write and read phases two counters are used in connection with a multiplier and an adder as well as a register for storing the D-value.
-
-
-
-
-
-
Search Results
7
records
(took 0.019 seconds)
