EP0019453A1 - Druckkopf und Druckwerk und Wortbearbeitungsmaschine mit einem solchen Druckkopf - Google Patents

Druckkopf und Druckwerk und Wortbearbeitungsmaschine mit einem solchen Druckkopf Download PDF

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Publication number
EP0019453A1
EP0019453A1 EP19800301569 EP80301569A EP0019453A1 EP 0019453 A1 EP0019453 A1 EP 0019453A1 EP 19800301569 EP19800301569 EP 19800301569 EP 80301569 A EP80301569 A EP 80301569A EP 0019453 A1 EP0019453 A1 EP 0019453A1
Authority
EP
European Patent Office
Prior art keywords
printing
printing device
cells
platen
types
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19800301569
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English (en)
French (fr)
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EP0019453B1 (de
Inventor
Hugh Peter Granville Kelly
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Priority to AT80301569T priority Critical patent/ATE6612T1/de
Publication of EP0019453A1 publication Critical patent/EP0019453A1/de
Application granted granted Critical
Publication of EP0019453B1 publication Critical patent/EP0019453B1/de
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J1/00—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies
    • B41J1/16—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies with types or dies arranged in stationary or sliding cases or frames or upon flexible strips, plates, bars or rods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/01—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for special character, e.g. for Chinese characters or barcodes

Definitions

  • This invention relates to printers, particularly, but not exclusively, to those used for printing on stationery and more particularly to printing devices and printing heads.
  • Word Processing systems Large use is currently made of printing devices as peripherals of a wide variety of computer systems. A particular and rapidly growing use of such devices is in the field of computer controlled typing systems, known as Word Processing systems and the present invention is particularly but not exclusively concerned with printing devices for use in such systems.
  • These systems usually comprise, in addition to their printers, an electronic keyboard (to take the place of the customary typewriter keyboard), a visual display unit (for displaying on an electroluminescent screen the text typed), a central processor unit (for running the software programs necessary for the manipulation and retrieval of text to be displayed) and a disc storage unit (for storing standard texts and documents to be printed).
  • the printer is usually of high quality and precision, and is capable of at least matching the quality of print of good typewriters.
  • a form of printer widely associated at present with word processing systems is that known as a 'daisy wheel' printer. This name derives from the appearance of its print element which comprises a multiplicity of flexible radial arms, or petals, emanating from a central spindle with dies at their free ends.
  • a printing head comprising an array of cells each containing an interchangeable type for printing a respective character, the types each being slidable relative to the cells from a rest position to an impression position, the arrangement being such that return of each type towards its rest position from its impression position is effected by its resiliently rebounding from a platen.
  • a second aspect of the present invention provides a printing device comprising a platen for supporting items on which text is to be printed, a printing head for printing text, the printing head comprising an array of cells each containing an interchangeable type for printing a respective character, the types being slidable relative to the cells from a rest position to an impression position, the arrangement being such that return of each type towards its rest position from its impression position is effected by its resiliently rebounding from the platen, a support carrying the printing head and movable longitudinally relative to the platen between a number of print positions, means for propelling the types to their impression positions, drive means for causing said relative movement of the platen and support and circuitry for controlling the operation of the impelling means and the drive means.
  • the array of cells will be termed herein a 'honeycomb' for short as in one form it may comprise a block having the cells extending between and open to opposite faces thereof. In another form the cells may be defined by pairs of aligned apertures in two spaced apart lattices or grids.
  • the cavities ('cells') of the honeycomb are not necessarily hexagonal in cross-section, indeed in a preferred embodiment of the invention the cavities and types are of rectangular cross-section. However, their cross-section may also take other forms which advantageously ensure the types are positioned the correct way up, in addition to preventing rotation.
  • the types may protrude from both sides of the honeycomb and may be biased towards a home position away from the stationery. It will be appreciated that the cavities of the honeycomb may each be filled by individual types bearing the desired characters so fulfilling the requirements of the user of the printer.
  • An ink or carbon ribbon may be located in between the honeycomb and the stationery for providing an impression of the print die.
  • Printers of the daisy-wheel kind make use of a trolley to carry the print mechanism and element.
  • the trolley is free to slide along bars positioned parallel to and in front of the platen of the printer. Stationery is fed around the platen using pinch rollers as in a typewriter.
  • motion is imparted to the trolley by means of a direct current servo motor, cable and pulley arrangement. Information on the position of the trolley at any moment is obtained from an optical encoder disc mounted on the shaft of the motor.
  • a signal is sent to the motor, the force and polarity of which is determined by the extent and direction of the required displacement.
  • Comprehensive compensation circuits allow for variations in performance of the motor servo loop system.
  • the support in embodiments of the present invention may comprise such a trolley mounted for sliding movement longitudinally of the platen by a guide rail arrangement.
  • Relative motion of the platen and the printing head of the printer of the present invention is achieved by use of a linear motor so controlled as to enable the platen and printing head to be arrested, relative to one another, in any desired print position.
  • the linear motor may be a stepping motor or an alternating current linear motor.
  • two or more such currents are applied to coils lain along the direction in which motion is to be imparted.
  • the coils are normally placed in slots in a ferrous stator.
  • a conducting material such as aluminium, when placed adjacent to the coils, experiences induced currents. These in turn create magnetic fields which react with those created initially by the applied currents, so producing thrust.
  • the thrust in general, is in the direction of the magnetic river created by the coils.
  • both the amplitude and phasing of alternating currents applied to accelerate the trolley may be determined on the basis of the required extent and direction of the displacement thereof to be effected, and braking of the trolley is achieved by reversing the direction of magnetic flux created by the motor and similarly regulating the amplitude and phasing of the now decelerating currents according to the speed and position of the trolley relative to its destination.
  • a two phase supply may be utilized to feed a two-phase A.C. linear motor, with the direction and amplitude of thrust imparted to the trolley being determined solely by the relative displacement of one supply relative to the other.
  • a transducer arrangement may be provided for detecting the relative position of the trolley and platen for positional feedback.
  • an optical encoder grill may be located along the length of the linear motor and provide,. by means of transducers mounted on the trolley, information on the position thereof to circuits controlling the alternating currents supplied to the motor.
  • the grill could of course be located on the trolley and the transducers adjacent the path of the trolley.
  • the detents may be defined electronically by the control circuitry associated with the drive means.
  • stationery is fed around a fixed-type platen and is guided by friction pinch rollers.
  • the stationery thus remains substantially stationary relative to the sides of the body of the printer.
  • Feed action is effected by means of a split phase stepper motor.
  • the propelling means of the print mechanism is mounted in a fixed position on the slideable trolley while the honeycomb housing the type is supported on the trolley by a bracket which is movable relative thereto the extent and direction of movement being effected by electromagnetic forces created by surrounding field coils, and the arrangement being such that, in use, the displacement of the honeycomb relative to the propelling means and the trolley relative to the stationery determine respectively the characters to be printed and their sequence.
  • the bracket supporting the honeycomb is in the form of a pyramid like frame with the honeycomb forming its base, and lies, in its rest position, substantially perpendicular to the platen along the breadth of the trolley.
  • the type propelling means is located within the space within the frame.
  • Two pairs of field coils act on magnets mounted on each of the four sides of the frame and control of the deflection of the bracket by the currents flowing in the coils is governed by servo-loop signals. These are provided by optical-encoder grills mounted on the bracket moving relative to transducers mounted on the trolley, or vice-versa.
  • the honeycomb has substantially the same number of type-receiving cavities width-wise as it does in depth.
  • the bracket supporting the honeycomb moves within a further bracket affixed to the trolley and is guided therein by gimbals or grooves giving freedom in the horizontal and vertical senses relative to the platen of the printer.
  • Deflection of the first bracket and therefore the honeycomb to a desired print position is effected by means of solenoids, or small linear motors, acting on the gimbal and bracket assembly.
  • the honeycomb itself may be constructed from, or is clad by, an electrically conductive material, and the linear motors themselves act directly upon the honeycomb and/or its cladding to move the honeycomb to the desired position.
  • the sides of the honeycomb itself are fashioned from an aluminium alloy.
  • a servo-mechanism utilized for controlling the position of the honeycomb relative to the print hammer is able so to do by means of impulses received from a combination of toothed notches on the honeycomb and/or its cladding moving relative to fixed electromagnetic sensors, or vice-versa.
  • the notches may correspond directly to the position of rows and columns of types, thus the counting of impulses created by movement of the notches relative to the sensors in the vertical and or horizontal directions establishes the precise position of a given type, relative to the hammer. It will be appreciated that for a ten square honeycomb accommodating one hundred types, only ten stop positions are required respectively in the horizontal and vertical senses.
  • the honeycomb is moved relative to the print hammer by stepping motors. Energisation of the coils of the stepping motors in a given sequence attracts pole pieces embedded within the honeycomb, and thus the honeycomb itself, to stable detent positions, these positions corresponding to individual rows and columns within the honeycomb. No servo-mechanism is required in this arrangement. Furthermore, in a further scheme in which no servo-mechanism is required, rotary stepper motors take the place of the linear stepping motors, and position the honeycomb in the vertical/horizontal senses by means of pinions engaging racks affixed to the honeycomb. Imparting an appropriate number of stepping pulses to each motor locates the selected type opposite the print hammer.
  • a type in use a type returns towards its original, rest position in its cell - after having been impelled towards the platen of the printer by the propelling means - as a result of bouncing off the resilient platen.
  • the honeycomb as a whole may be inclined away from the vertical and away from the upper portion of the platen, but in such a way that the face of the honeycomb remains substantially perpendicular to a radius of the platen, the arrangement being such that gravitational forces aid the said bouncing effect restoring type to its original position within its cavity.
  • An important aspect of the invention is the interchangeability of types within the honeycomb. Any character font desired by a particular user can thereby be provided up to the capacity of the honeycomb. In practice, easy interchangeability is desirable, but not at the expense of types slipping from their respective positions during printing operation and during removal of the honeycomb from the printer.
  • a removable retaining member may be provided to retain the types in their cells while permitting movement between their rest and impression positions.
  • grooves on the honeycomb slideably accommodate, on one of its open surfaces, a slotted base plate, the slots of the base plate engaging corresponding slots along the body of each type, there being sufficient freedom to permit each type to impinge against the platen when impelled theretowards by the print hammer.
  • the slotted base plate prevents types from inadvertently falling from the honeycomb, but, on removal from its supporting grooves, allows the types to be withdrawn and exchanged.
  • the invention further provides a word processor incorporating a printing device embodying the second aspect of the present invention.
  • a printing device is generally designated 10 and includes a platen 11 embraced circumferentially along part of its length by stationery 12.
  • the coil of an alternating current linear induction motor 13 is mounted on the base of the printer, and is used to propel a trolley 14 in a horizontal sense from left to right and vice-versa, as indicated by the arrow.
  • the trolley is held above and guided along the motor by means of tongues, two of which are shown at 15 and 16, engaging grooves 17 running along the motor's length.
  • a print mechanism 18 is supported on the trolley 14 and includes a suspended honeycomb print head 19 and means (not shown) for moving the head relative to an electromagnetic hammer 20, also mounted on the trolley.
  • a 'snake' 23 attached at one end to the trolley and at the other to the base of the printer is used to convey and protect signal cables connected to the transducer and other components of the print mechanism.
  • the print head 19 of the printer is now described with reference to Figure 2 which shows from the rear such a. head but to an enlarged scale.
  • the head consists of a symmetrical open-sided honeycomblike array of a multiplicity of cavities.
  • Each of the cavities is, in this example, of square cross-section and is occupied by a slideable type, two of which are shown protruding, for clarity, from the rear face of the honeycomb at 24.
  • each type may be directly extracted from the honeycomb on removal of the said bracket.
  • Each'type ends in a print die, as shown for example at 25.
  • the honeycomb is constructed from lightweight plastics, but has attached to its rear face a ferromagnetic lattice.
  • the types may be magnetised to aid their retention in the honeycomb.
  • the lattice may be magnetised instead.
  • each type may contain in its rear end a ferromagnetic core.
  • the hammer itself is magnetized, and as the hammer and type return from the platen as a result of bouncing there off, the attraction exerted by the hammer on the core within the type ensures the type returns to its cavity.
  • the hammer by virtue of its return momentum, breaks away from the type, once the protruding lips 26 prevent further movement thereof, so becoming ready for the next impact.
  • the hammer also returns, in part, as a result of the type bouncing off the platen, the 'bounce' being transmitted to the body of the hammer from the body of the type.
  • a return spring may aid the return of the hammer).
  • the trolley is then moved by the linear motor to the next desired position, the honeycomb is repositioned, and the process repeated.
  • the honeycomb may be detached from the suspension unit by the operator using the printer.
  • the cavities of the honeycomb may then be filled by types corresponding exactly to the operator's particular requirements, so providing a very flexible character repertoire.
  • only those types in most frequent use need be replaced, rather than changing the entire element. (It will be appreciated from the die illustrated at 25 in Figure 2 that the effective print portion may have considerable body, so reducing necessity for frequent replacement.)
  • a two-phase linear induction motor is employed to move the said trolley.
  • a phase control network responsive to trolley positioning commands received by the printer, regulates whether phase a leads b, or b leads a, (see Figures 10 iand ii); this thus determines the direction of thrust.
  • the amplitude of thrust exerted by the linear motor on the trolley is similarly determined, being dependent on the extent to which one phase is made to lead the other.
  • a maximum thrust is experienced with a radians out of phase with b, whereas no thrust is experienced with the two phases superimposed (see Figure 10 iii).
  • the phase control network need therefore only regulate the relative phasing of the two supplies a and b, to both control the direction of thrust imparted to the trolley and its amplitude, so providing means conveniently responsive to a servo-loop control system for controlling the position of the trolley.
  • phase control network may take that shown in Figure 11.
  • regulation of the gating currents to four thyristors 126, 127, 128 and 129 controls the degree of direct and phase- displaced alternating current supplied to each coil of the motor.
  • 126 and 129 switched on full thrust will be experienced in one direction and, conversely, switching on 127 and 128 causes full thrust to be experienced in the opposite direction.
  • Intermediate degrees of thrust in each direction are obtained by appropriately controlling the firing periods of the various thyristors.
  • a modified embodiment of the invention makes use of control of both the amplitude of the applied currents and also their phase displacements.
  • An example of such control is now described with reference to Figure 3.
  • a displacement D is to be effected, D being represented by a multiple bit binary word indicating the number of gradations to be traversed by the transducer 21 over the optical encoder grill 22 (see Figure 1).
  • the start position of the trolley P s is first added in a binary adder to D, to arrive at the finishing position, P f ; (P s is derived from an internal binary counter, P a , which permanently follows the output of the transducer).
  • P f is obtained, the absolute mid-point position P m is also calculated; see equation 1 in Figure 3.
  • a digital to analogue converter, 28, interprets these signals to regulate the amplitude, A, of the supplies a and b, according to the extent of the displacement to be effected.
  • a a is made proportional to a combination of the initial difference between P s and P m , and thereafter to the difference between the absolute position of the trolley, P a , and, say, the mid-point position P. (Note, for very small displacements, a minimum value of A a is applied to overcome static friction.) As the mid-point is reached, the accelerating thrust is substantially reduced.
  • the decelerating thrust A d is made sufficient to counter the velocity imparted to the trolley, and is therefore determined partly by the difference between P m and P f (reflecting the velocity imparted by A a ), and also, towards the end of the trolley's travel, by the difference between P a and P f .
  • P m and P a are fed to a comparator, 29, to determine the phase relationship between a and b and thus the direction of thrust, so giving rise, effectively, to the two components A a and A d .
  • a component of the signal A is also fed to. the comparator to further influence the phase relationship according to the thrust required, as described earlier.
  • the use of absolute reference positions, such as P and P a enables comparison to be made with predetermined reference positions, so safeguarding against such eventualities as displacements being effected which would otherwise result in the trolley crashing into end-stops mounted on the printer.
  • energisation of the hammer solenoid causes attraction onto it of the ferromagnetic rear face of the honeycomb, so preventing relative movement therebetween while the firing pin of the hammer propels the chosen type forward.
  • the natural resilience of the support frame detaches the honeycomb from the hammer solenoid once it is de-energised.
  • two-phase linear induction motors depicted at 110 and 111 are shown acting on a honeycomb printing head 19, and a thrust plate 113 respectively.
  • the print head is free to move in a vertical sense relative to the motor 110.
  • the linear motor 110 acts directly on the print element 19, which itself is constructed from an aluminium alloy, to establish vertical movement thereof.
  • the thrust plate 113 is affixed to the base of the motor 110, and is acted upon by the motor 111 to cause horizontal displacements of the honeycomb and motor 110 combination. In use, appropriate phasing of currents to the two motors thereby establishes both horizontal and vertical movement of the honeycomb to any desired position.
  • Third and fourth motors may be provided opposite those shown at 10 and 11 to increase the thrust exerted upon the honeycomb and thus the speed at which a desired position is reached.
  • the honeycomb may be supported by tongues emerging therefrom and slideably engaging grooves 14 in the linear motor 110.
  • teeth 115 are shown protruding from a lateral face of the print element 19.
  • a fixed electromagnetic sensor 116 is positioned adjacent to the teeth for their detection.
  • a similar arrangement exists on the horizontal face of the honeycomb, or the thrust plate 113.
  • the position of the honeycomb relative to the linear motor (shown in Figure 5) is established by detection of the number of teeth passing either sensor.
  • the teeth may each correspond to each row and or column of types housed within the honeycomb, the arrangement being such that a servo-mechanism circuit controlling the action of the linear motors ensures the required displacement of the .honeycomb to a desired position by counting the number of teeth passing each sensor.
  • Alternating currents are passed through the coils of the sensors, and the horizontal/vertical teeth of the honeycomb are detected by virtue of the change they effect in the inductance of the sensor/tooth combination, and thus the current passing through the respective sensor coil(s).
  • linear stepping motors are employed. These are shown, schematically, at 117 and 118. Magnetised cores 119 and 120 are embedded in the sides of the honeycomb. The sequence of North/South pole magnetisation of the cores is such that suitable energisation sequences of the coils of the stepping motors causes horizontal and vertical movement of the honeycomb to a desired position.
  • One or other of the motors 117, 118 of course moves with the honeycomb during actuation of the other motor 118 or 117.
  • stable detent positions of the cores opposite the poles of the stepping motors correspond to individual rows and columns of types within the honeycomb, thus no servo-mechanism is required.
  • the types having first been impelled forwards, return to their cavities within the honeycomb as a result of bouncing off a resilient
  • a small stepper motor 51 is used by means of a crank arrangement 52, to raise and lower the honeycomb on guide rods 53 and 54 affixed to the base of the trolley 30.
  • a circular optical encoder grill 55 is mounted on the axis of the motor and serves, in conjunction with a transducer 56, to provide information on the position of the honeycomb.
  • Mounted above the motor and directly in front of the honeycomb is a battery of electromagnetic hammers (shown offset for clarity at '57),one for each column of cavities in the honeycomb.
  • the honeycomb is raised and lowered by a servo-controlled linear motor, or by a stepper motor.
  • control circuitry regulates the movement of the trolley such as to bring the column containing the desired type to the desired print position.
  • the stepper motor raises or lowers the honeycomb to the correct height and the appropriate hammer is then fired. It will be appreciated that for a honeycomb twelve cavities wide, the motor need only oscillate between two adjacent positions to present nearly all the lower case characters of this alphabet to the battery.
  • the characters may be printed not necessarily one after the other.
  • the honeycomb may be so positioned that a letter or letters of a second word may be printed while a first word is being formed, and so on.
  • the extent to which this occurs is of course determined by any given character sequence, and may be optimised by comparison registers within the printer controlling the motion of the trolley and honeycomb relative to the stationery.
  • the positioning of the hammers and honeycomb relative to the trolley may be adapted to be at right angles to the arrangement shown in Figure 4 for oriental printing requirements.

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  • Character Spaces And Line Spaces In Printers (AREA)
EP19800301569 1979-05-18 1980-05-13 Druckkopf und Druckwerk und Wortbearbeitungsmaschine mit einem solchen Druckkopf Expired EP0019453B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80301569T ATE6612T1 (de) 1979-05-18 1980-05-13 Druckkopf und druckwerk und wortbearbeitungsmaschine mit einem solchen druckkopf.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB7917467 1979-05-18
GB7917467 1979-05-18
GB8001876 1980-01-21
GB8001876 1980-01-21

Publications (2)

Publication Number Publication Date
EP0019453A1 true EP0019453A1 (de) 1980-11-26
EP0019453B1 EP0019453B1 (de) 1984-03-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19800301569 Expired EP0019453B1 (de) 1979-05-18 1980-05-13 Druckkopf und Druckwerk und Wortbearbeitungsmaschine mit einem solchen Druckkopf

Country Status (5)

Country Link
EP (1) EP0019453B1 (de)
AU (1) AU541660B2 (de)
CA (1) CA1170205A (de)
DE (1) DE3066932D1 (de)
DK (1) DK216580A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3515108C1 (de) * 1985-04-26 1986-08-28 TA Triumph-Adler AG, 8500 Nürnberg Verfahren zum Einstellen des Druckhammers von Schreibmaschinen oder aehnlichen Geraeten mit einer in X-Y-Richtung einstellbaren Typenmatrix
DE10106897A1 (de) * 2001-02-10 2002-08-14 Steinhauer Elmasch Gmbh Beschriftungsgerät
WO2011134661A1 (de) * 2010-04-29 2011-11-03 Muehlbauer Ag Verfahren und vorrichtung zum bedrucken von wert- oder sicherheitsdokumenten

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3007400A (en) * 1958-12-04 1961-11-07 Ibm Printing apparatus and method for assembly
DE1197474B (de) * 1960-01-07 1965-07-29 Herman Emil Krutschau Tastenbetaetigbares, elektromagnetisch antreibbares Druckwerk eines Schreibgeraetes
FR2093848A5 (de) * 1970-05-28 1972-01-28 Teletype Corp
US4015699A (en) * 1974-04-08 1977-04-05 Burroughs Corporation Alphanumeric serial printer with a flexible membrane printing element
US4064983A (en) * 1976-08-02 1977-12-27 Hitachi, Ltd. Japanese character word processing system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3007400A (en) * 1958-12-04 1961-11-07 Ibm Printing apparatus and method for assembly
DE1197474B (de) * 1960-01-07 1965-07-29 Herman Emil Krutschau Tastenbetaetigbares, elektromagnetisch antreibbares Druckwerk eines Schreibgeraetes
FR2093848A5 (de) * 1970-05-28 1972-01-28 Teletype Corp
US4015699A (en) * 1974-04-08 1977-04-05 Burroughs Corporation Alphanumeric serial printer with a flexible membrane printing element
US4064983A (en) * 1976-08-02 1977-12-27 Hitachi, Ltd. Japanese character word processing system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3515108C1 (de) * 1985-04-26 1986-08-28 TA Triumph-Adler AG, 8500 Nürnberg Verfahren zum Einstellen des Druckhammers von Schreibmaschinen oder aehnlichen Geraeten mit einer in X-Y-Richtung einstellbaren Typenmatrix
US4710042A (en) * 1985-04-26 1987-12-01 Ta Triumph-Adler Aktiengesellschaft Method and apparatus for indexing the print hammer of typewriters or the like
DE10106897A1 (de) * 2001-02-10 2002-08-14 Steinhauer Elmasch Gmbh Beschriftungsgerät
WO2011134661A1 (de) * 2010-04-29 2011-11-03 Muehlbauer Ag Verfahren und vorrichtung zum bedrucken von wert- oder sicherheitsdokumenten

Also Published As

Publication number Publication date
AU5845980A (en) 1980-11-20
EP0019453B1 (de) 1984-03-14
DK216580A (da) 1980-11-19
AU541660B2 (en) 1985-01-17
CA1170205A (en) 1984-07-03
DE3066932D1 (en) 1984-04-19

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