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公开(公告)号：FR2394402A1
公开(公告)日：1979-01-12
申请号：FR7814655
申请日：1978-05-09
Abstract: Tête d'impression. Les électrodes E1, E2, E3,. En sont disposées selon une droite ascendante par rapport au sens de déplacement de la tête, et elles sont espacées entre elles de manière telle que l'incrément qui les sépare augmente linéairement. Si l'on désigne par E'1, E'2, E'3,. E'n, des électrodes fictives, régulièrement espacées, E1 coïncidant avec E'1, E2 s'écarte de E'2 de DELTA x, E3 de E'3 de 2 DELTA x, etc. Imprimantes.
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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.
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公开(公告)号：CA1192940A
公开(公告)日：1985-09-03
申请号：CA384034
申请日：1981-08-17
Applicant: IBM
Inventor： BAHR DIETRICH J , GOLDRIAN GOTTFRIED A
Abstract: Method and arrangement for controlling the print current in metal paperprinters For record carriers with a greatly varying thickness of the metal layer, the burn out process is effected dynamically with respect to the current strength. During the starting phase up to the beginning of the actual arcing phase a relatively high current is applied which is sufficient to burn out even thick metal layers. As burning out proceeds, the print current, after a particular arc voltage has been reached, is reduced in a short time, maintaining the are and avoiding an undesirable burning out which would increase the print spot. For thinner metal layers the burn out current is correspondingly lower. The maximum burn out current is automatically adjusted to the thickness of the metal layer by measuring the arc voltage between electrode and metal surface of the record carrier. Suitable arrangements for controlling the burn out current are characterized by an (are) voltage-controlled current control circuit.
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公开(公告)号：CA1084104A
公开(公告)日：1980-08-19
申请号：CA288232
申请日：1977-10-06
Applicant: IBM
Inventor： BAHR DIETRICH J , BURCKARDT KARL H
Abstract: In a high-resolution electroerosion print head, the relatively fine electrodes are guided in thin glass tubes, the glass tubes being embedded in the body of the print head or the like. Feed rolls are provided for advancing the electrodes, such feed rolls being paired and each pair including a first, hard roll provided with grooves for guiding the electrodes, and as second roll of a relatively softer material. The hard material can be an acrylonitrile-butadiene-styrene-copolymer, and softer material, a polyurethane.
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公开(公告)号：CA1169036A
公开(公告)日：1984-06-12
申请号：CA384052
申请日：1981-08-17
Applicant: IBM
Inventor： BAHR DIETRICH J , BRISKA MARIAN
Abstract: In a record carrier for use in electro-erosion printers, the surface of the lacquer and consequently also the surface of the superimposed aluminum layer shows a multitude of shallow dimples in the .mu.m range which are very small compared with the front surfaces of the print electrodes, which are of maximum uniformity, and whose spacing is equally in the .mu.m range. With such a surface, the carrier has a much lower tendency to scratching and gliding traces.
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Patent Agency Ranking
公开(公告)号：CA1163739A
公开(公告)日：1984-03-13
申请号：CA380782
申请日：1981-06-26
Applicant: IBM
Inventor： BAHR DIETRICH J , SCHACKERT KLAUS , BRISKA MARIAN
IPC: B41M5/24 , C09D101/12 , C09D3/14 , C09D3/76
Abstract: After having been pretreated by kneading at its softening temperature, a cellulose acetate is subjected to block polymerization by being kneaded with, for example, an ethylene vinyl acetate copolymerizate, at its mean softening temperature. If necessary, the block copolymerizate may be subsequently cross-linked by adding a peroxide.
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公开(公告)号：AU7556681A
公开(公告)日：1982-09-09
申请号：AU7556681
申请日：1981-09-22
Applicant: IBM
Inventor： BAHR DIETRICH J , BRISKA MARIAN
Abstract: For record carrier material, the front and the back sides of which are provided with a lacquer layer and the front side of which is coated with an aluminum layer, one of the two lacquer layers is admixed with a material, such as metal azide, which forms a metal radical suitable for reacting with fatty acids, while at least one of the lacquer layers is admixed with a fatty acid or a mixture of fatty acids.
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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.
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公开(公告)号：CA1161976A
公开(公告)日：1984-02-07
申请号：CA374132
申请日：1981-03-30
Applicant: IBM
Inventor： BAHR DIETRICH J , BRISKA MARIAN
IPC: C08L1/00 , B41M5/24 , C09D101/08 , C09D101/14 , C09D3/14 , C09D3/76
Abstract: PROCESS FOR PRODUCING A MECHANICALLY STABLE, HEAT RESISTANT LACQUER FOR RECORD CARRIERS AND LACQUER PRODUCED BY SAID PROCESS Process for producing a mechanically stable, heat resistant lacquer for record carriers on a cellulose aceto monobutyrate basis, whereby the cellulose aceto monobutyrate and a polyvinyl ester copolymer with side chains consisting of longer aliphatic chains are mixed with each other and are processed in the form of a lacquer after addition of the fillers and/or pigments.
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公开(公告)号：FR2386417A1
公开(公告)日：1978-11-03
申请号：FR7806563
申请日：1978-02-28
Applicant: IBM
Inventor： BAHR DIETRICH J , BURCKARDT KARL H , HASSELMEIR HELMUT
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.
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