EP0007454B1 - Device for adapting the type impact energy in a disc printer to the contact surface area of a character - Google Patents

Device for adapting the type impact energy in a disc printer to the contact surface area of a character Download PDF

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Publication number
EP0007454B1
EP0007454B1 EP79102155A EP79102155A EP0007454B1 EP 0007454 B1 EP0007454 B1 EP 0007454B1 EP 79102155 A EP79102155 A EP 79102155A EP 79102155 A EP79102155 A EP 79102155A EP 0007454 B1 EP0007454 B1 EP 0007454B1
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EP
European Patent Office
Prior art keywords
type
character
print
finger
spring
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.)
Expired
Application number
EP79102155A
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German (de)
French (fr)
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EP0007454A1 (en
Inventor
Arno Matla
Horst Matthaei
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International Business Machines Corp
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International Business Machines Corp
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Publication date
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Publication of EP0007454A1 publication Critical patent/EP0007454A1/en
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Publication of EP0007454B1 publication Critical patent/EP0007454B1/en
Expired legal-status Critical Current

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    • 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
    • B41J7/00—Type-selecting or type-actuating mechanisms
    • B41J7/92—Impact adjustment; Means to give uniformity of impression
    • B41J7/94—Character-by-character adjustment
    • 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
    • B41J1/22—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies with types or dies mounted on carriers rotatable for selection
    • B41J1/24—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies with types or dies mounted on carriers rotatable for selection the plane of the type or die face being perpendicular to the axis of rotation
    • B41J1/28—Carriers stationary for impression, e.g. with the types or dies not moving relative to the carriers
    • B41J1/30—Carriers stationary for impression, e.g. with the types or dies not moving relative to the carriers with the types or dies moving relative to the carriers or mounted on flexible carriers

Definitions

  • the invention relates to a device for adapting the impact energy of a printing type in type plate printers to the size of the drawing line length.
  • Such a device has the purpose of producing a uniform impression for different characters which differ in the size or length of the character line. So z. For example, a dot cannot be printed more than the character &. However, this means that the pressure energy per unit area of the drawing line must be the same in both cases. In other words, less impact energy is to be used for the imprint of a point than for the imprint of the character &.
  • a certain amount of impact energy is therefore required for the optimal imprint of a character.
  • This energy is provided in the form of kinetic energy.
  • IBM TDB Vol. 19, No. 8, January 1977 as well as DE-B-2545311 and US-A-4 074798 describe type plate printers in which the impact energy is controlled via the energy supply for the printing hammer in such a way that the pulse duration of the excitation current for the hammer magnet is varied by a microprocessor.
  • a type plate is known from DD-A-131 457, the associated print hammer of which works with a constant pressure hammer stop force and whose type plate fingers have different thicknesses to obtain a print image with a constant print intensity of the print characters, at least in the area of the relevant type element, which are selected in accordance with the respective print character contour length, so that each finger has a different type element thickness when viewed perpendicular to the plane of the pane.
  • the invention is based on the object of specifying a device for adapting the impact energy of a printing type in type plate printers to the size or length of the character line length, which can be implemented even more easily and inexpensively.
  • Type plates are either carved out of a metal plate, molded from plastic material or assembled from metal fingers.
  • the type fingers act as leaf springs and already absorb a small part of the kinetic energy of the hammer on their way to the recording medium driven by the pressure hammer.
  • the proportion that is removed from the actual printing process in this way is now additionally controlled by giving the individual type fingers an additional spring stiffness depending on the symbols affixed to them. This is done in that a further spring washer 5 is attached in front of the type plate 1 in the direction of the recording medium, the spring fingers of which influence the stiffness of the individual type plate finger in the desired manner.
  • the type plate 1 consists of a piece of a resilient material suitable for the printing process. It has a plurality of fingers 2-1, 2-2, 2-3, etc. pointing radially outwards. At the end of these fingers, the type characters 3-1, 3-2, 3-3, etc., which create the impression, are arranged.
  • the type plate shown in Fig. 1 is that of a so-called front side printer. It has to be imagined that a z. B. behind the finger 2-2 located print hammer this finger in the printing direction, ie moved out of the plane of the drawing to the front, the character type 3-2 generates an impression on the record carrier lying above, not shown.
  • the type plate 1 arranged on an axis 4 can be driven either intermittently or continuously rotating.
  • An additional spring washer 5, preferably made of spring steel sheet, is arranged on this axis 4.
  • This spring washer 5 also has individual fingers on its outer part like the type disk 1.
  • the division of the fingers of the spring washer 5 corresponds to the division of the fingers on the type disk 1.
  • the spring washer 5 is fastened to the type disk 1 in such a way that a finger of the type disk 1 is held with a finger of the spring washer 5 is aligned.
  • This attachment can be done in a conventional manner: z. B by riveting.
  • Type and spring washer can be held on the axis 4 by a screw fixation (Fig. 2).
  • the fingers of the spring washer 5 have different lengths depending on the size or length of the drawing line of the character on the fingers of the type disk 1 assigned to them. In this way, kinetic energy is absorbed by the spring finger 5-1.5-2.5-3 when the type disk finger is actuated by the printing hammer during the movement of the character type to the recording medium, so that the impact energy of the printing type can be controlled in this way.
  • a long spring finger 5-2 would absorb a lot of energy in this case, so that the impact energy for rendering point 3-2 is reduced to a large extent, since the character print area of the point is very small.
  • the spring finger 5-1 which is assigned to the type plate finger 2-1, which bears this symbol &, must be made correspondingly short. This ensures that this spring finger 5-1 absorbs little kinetic energy during the movement. It can be assumed that the print hammer is excited with the same amount of energy regardless of the character to be printed. According to these principles, the individual feather fingers must have a length that is matched to the size or length of the line of the character to be printed.
  • the spring finger must be long in order to absorb a lot of kinetic energy; if the length of the drawing line or the printing area is larger, the spring finger must be shorter in order to draw less or no kinetic energy from the opening process.
  • the character string in FIG. 1 is chosen arbitrarily and only serves to make the principle of the invention clear.
  • the additional spring washer can be cast into an elastic hub.
  • the spring washer can also be attached to the type plate by an adhesive or soldered connection.

Landscapes

  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)
  • Impact Printers (AREA)
  • Character Spaces And Line Spaces In Printers (AREA)

Description

Die Erfindung bezieht sich auf eine Vorrichtung zur Anpassung der Aufschlagenergie einer Drucktype bei Typenscheibendruckern an die Grösse derZeichenlinienlänge.The invention relates to a device for adapting the impact energy of a printing type in type plate printers to the size of the drawing line length.

Eine solche Vorrichtung hat den Zweck, für unterschiedliche Zeichen, die sich in der Grösse bzw. Länge der Zeichenlinie unterscheiden, einen gleichmässigen Abdruck zu bewirken. So soll z. B. ein Punkt nicht stärker abgedruckt werden als das Zeichen &. Das bedeutet aber, dass die Druckenergie pro Zeichenlinien-Flächeneinheit in beiden Fällen gleich gross sein muss. Mit anderen Worten, für den Abdruck eines Punktes ist insgesamt weniger Aufschlagenergie aufzuwenden als für den Abdruck des Zeichens &.Such a device has the purpose of producing a uniform impression for different characters which differ in the size or length of the character line. So z. For example, a dot cannot be printed more than the character &. However, this means that the pressure energy per unit area of the drawing line must be the same in both cases. In other words, less impact energy is to be used for the imprint of a point than for the imprint of the character &.

Somit ist für den optimalen Abdruck eines Zeichens eine bestimmte Aufschlagenergiemenge erforderlich. Diese Energie wird in Form von kinetischer Energie bereitgestellt.A certain amount of impact energy is therefore required for the optimal imprint of a character. This energy is provided in the form of kinetic energy.

Es sind verschiedene Möglichkeiten bekannt geworden, die Aufschlagenergie der Drucktype an die Zeichenlinienlänge anzupassen.

  • 1. Die Energiezufuhr zum Druckhammer wird gesteuert.
  • 2. Dem die Drucktype treibenden Druckhammer wird überflüssige kinetische Energie entnommen.
Various possibilities have become known for adapting the impact energy of the printing type to the length of the drawing line.
  • 1. The energy supply to the print hammer is controlled.
  • 2. Excess kinetic energy is taken from the printing hammer driving the printing type.

In dem IBM TDB Vol. 19, Nr. 8, Januar 1977 sowie der DE-B-2545311 und der US-A-4 074798 sind Typenscheibendrucker beschrieben, bei denen die Aufschlagenergie über die Energiezufuhr für den Druckhammer in der Weise gesteuert wird, dass durch einen Mikroprozessor die Impulsdauer des Erregerstromes für den Hammermagneten variiert wird.IBM TDB Vol. 19, No. 8, January 1977 as well as DE-B-2545311 and US-A-4 074798 describe type plate printers in which the impact energy is controlled via the energy supply for the printing hammer in such a way that the pulse duration of the excitation current for the hammer magnet is varied by a microprocessor.

Im IBM TDB Vol. 19, Nr. 2, Juli 1976, ist eine Anordnung beschrieben, bei der die Anpassung der Aufschlagenergie einer Drucktype an die Grösse der Zeichenlinienlänge durch ein Energie absorbierendes Element erfolgt, welches zwischen dem Druckhammer und dem das Druckzeichen tragenden Typenscheibenfinger angeordnet ist.In IBM TDB Vol. 19, No. 2, July 1976, an arrangement is described in which the impact energy of a printing type is adjusted to the size of the character line length by an energy-absorbing element which is arranged between the printing hammer and the type disc finger bearing the printing sign is.

Ferner ist aus der DD-A-131 457 eine Typenscheibe bekannt, deren zugeordneter Druckhammer mit gleichbleibender Druckhammeranschlagskraft arbeitet und deren Typenscheibenfinger zum Erhalt eines Druckbildes mit gleichbleibender Abdruckintensität der Druckzeichen mindestens im Bereich des betreffenden Typenelementes unterschiedlicheDicken aufweisen,die entsprechend der jeweiligen Druckzeichenkonturenlänge gewählt sind, so dass jeder Finger senkrecht zur Scheibenebene gesehen eine andere Typenelementdicke besitzt.Furthermore, a type plate is known from DD-A-131 457, the associated print hammer of which works with a constant pressure hammer stop force and whose type plate fingers have different thicknesses to obtain a print image with a constant print intensity of the print characters, at least in the area of the relevant type element, which are selected in accordance with the respective print character contour length, so that each finger has a different type element thickness when viewed perpendicular to the plane of the pane.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung zur Anpassung der Aufschlagenergie einer Drucktype bei Typenscheibendruckern an die Grösse bzw. Länge der Zeichenlinienlänge anzugeben, welche noch einfacher und billiger realisierbar ist.The invention is based on the object of specifying a device for adapting the impact energy of a printing type in type plate printers to the size or length of the character line length, which can be implemented even more easily and inexpensively.

Diese Aufgabe der Erfindung wird durch die im kennzeichnenden Teil des Anspruches 1 angegebenen Massnahmen in vorteilhafter Weise gelöst. Vorteilhafte Weiterbildungen der Erfindung sind den Unteransprüchen zu entnehmen.This object of the invention is achieved in an advantageous manner by the measures specified in the characterizing part of claim 1. Advantageous developments of the invention can be found in the subclaims.

Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen dargestellt und wird im folgenden näher beschrieben.An embodiment of the invention is shown in the drawings and will be described in more detail below.

Es zeigen:

  • Fig. 1 eine Aufsicht auf eine Typenscheibe des Typenscheibendruckers mit einer zusätzlichen Federscheibe,
  • Fig. 2 eine Schnittdarstellung durch die Anordnung nach Fig. 1 gemäss der Schnittlinie A-A unter Berücksichtigung der Antriebswelle für die Typenscheibe.
Show it:
  • 1 is a plan view of a type plate of the type plate printer with an additional spring washer,
  • Fig. 2 is a sectional view through the arrangement of FIG. 1 along the section line AA, taking into account the drive shaft for the type plate.

Typenscheiben sind entweder aus einer Metallplatine herausgearbeitet, aus Plastikmaterial gespritzt oder aus Metallfingern zusammengesetzt. Die Typenfinger wirken als Blattfedern und nehmen auf ihrem durch den Druckhammer getriebenen Weg zum Aufzeichnungsträger bereits einen geringen Teil der kinetischen Energie des Hammers auf. Der Anteil, der auf diese Weise dem eigentlichen Druckvorgang entzogen wird, wird nun zusätzlich dadurch gesteuert, dass den einzelnen Typenfingern eine zusätzliche Federsteifigkeit abhängig von den auf ihnen angebrachten Zeichen gegeben wird. Dies geschieht dadurch, dass vor der Typenscheibe 1 in Richtung zum Aufzeichnungsträger eine weitere Federscheibe 5 angebracht ist, deren Federfinger die Steifigkeit des einzelnen Typenscheibenfingers in gewünschter Weise beeinflussen.Type plates are either carved out of a metal plate, molded from plastic material or assembled from metal fingers. The type fingers act as leaf springs and already absorb a small part of the kinetic energy of the hammer on their way to the recording medium driven by the pressure hammer. The proportion that is removed from the actual printing process in this way is now additionally controlled by giving the individual type fingers an additional spring stiffness depending on the symbols affixed to them. This is done in that a further spring washer 5 is attached in front of the type plate 1 in the direction of the recording medium, the spring fingers of which influence the stiffness of the individual type plate finger in the desired manner.

Die Typenscheibe 1 besteht aus einem Stück eines für den Druckvorgang geeigneten federnden Materials. Sie weist eine Vielzahl von radial nach aussen zeigenden Fingern 2-1, 2-2, 2-3, etc., auf. Am Ende dieser Finger sind die den Abdruck erzeugenden Typenzeichen 3-1, 3-2, 3-3 usw. angeordnet.The type plate 1 consists of a piece of a resilient material suitable for the printing process. It has a plurality of fingers 2-1, 2-2, 2-3, etc. pointing radially outwards. At the end of these fingers, the type characters 3-1, 3-2, 3-3, etc., which create the impression, are arranged.

Die in Fig. 1 abgebildete Typenscheibe ist die eines sogenannten Vorderseitendruckers. Dabei hat man sich vorzustellen, dass an einer beispielsweise azimutalen Druckposition ein z. B. hinter dem Finger 2-2 befindlicher Druckhammer diesen Finger in Druckrichtung, also aus der Zeichenebene heraus nach vorn bewegt, wobei die Zeichentype 3-2 auf dem über der Zeichenebene liegenden, nicht dargestellten Aufzeichnungsträger einen Abdruck erzeugt.The type plate shown in Fig. 1 is that of a so-called front side printer. It has to be imagined that a z. B. behind the finger 2-2 located print hammer this finger in the printing direction, ie moved out of the plane of the drawing to the front, the character type 3-2 generates an impression on the record carrier lying above, not shown.

Für den Druckvorgang kann die auf einer Achse 4 angeordnete Typenscheibe 1 entweder intermittierend oder ständig drehend angetrieben werden. Auf dieser Achse 4 ist eine zusätzliche, vorzugsweise aus Federstahlblech gefertigte Federscheibe 5 angeordnet. Diese Federscheibe 5 weist auf ihrem äusseren Teil ebenfalls wie die Typenscheibe 1 einzelne Finger auf. Die Teilung der Finger der Federscheibe 5 entspricht der Teilung der Finger auf der Typenscheibe 1. Die Befestigung der Federscheibe 5 an der Typenscheibe 1 erfolgt so, dass ein Finger der Typenscheibe 1 mit einem Finger der Federscheibe 5 ausgerichtet ist. Diese Befestigung kann auf her- - kömmliche Art und Weise erfolgen: z. B durch Nieten. Typen- und Federscheibe können durch eine Schraubfixierung (Fig. 2) auf der Achse 4 gehalten sein. Die Finger der Federscheibe 5 sind je nach der Grösse bzw. Länge der Zeichenlinie des Zeichens auf den ihnen zugeordneten Fingern der Typenscheibe 1 unterschiedlich lang. Auf diese Weise wird durch den Federfinger 5-1,5-2,5-3 bei Betätigung des Typenscheibenfingers durch den Druckhammer während der Bewegung der Zeichentype zum Aufzeichnungsträger kinetische Energie absorbiert, so dass auf diese Weise die Aufschlagenergie der Drucktype gesteuert werden kann. Ein langer Federfinger 5-2 würde hierbei viel Energie absorbieren, damit die Aufschlagenergie zur Wiedergabe des Punktes 3-2 auf ein grosses Mass reduziert wird, da die Zeichenabdruckfläche des Punktes sehr klein ist.For the printing process, the type plate 1 arranged on an axis 4 can be driven either intermittently or continuously rotating. An additional spring washer 5, preferably made of spring steel sheet, is arranged on this axis 4. This spring washer 5 also has individual fingers on its outer part like the type disk 1. The division of the fingers of the spring washer 5 corresponds to the division of the fingers on the type disk 1. The spring washer 5 is fastened to the type disk 1 in such a way that a finger of the type disk 1 is held with a finger of the spring washer 5 is aligned. This attachment can be done in a conventional manner: z. B by riveting. Type and spring washer can be held on the axis 4 by a screw fixation (Fig. 2). The fingers of the spring washer 5 have different lengths depending on the size or length of the drawing line of the character on the fingers of the type disk 1 assigned to them. In this way, kinetic energy is absorbed by the spring finger 5-1.5-2.5-3 when the type disk finger is actuated by the printing hammer during the movement of the character type to the recording medium, so that the impact energy of the printing type can be controlled in this way. A long spring finger 5-2 would absorb a lot of energy in this case, so that the impact energy for rendering point 3-2 is reduced to a large extent, since the character print area of the point is very small.

Im Gegensatz dazu ist für den Abdruck des Zeichens & mit einer im Vergleich zur Punktfläche ungleich grösseren Zeichenlinie eine entsprechend höhere Aufschlagenergie erforderlich. Dementsprechend muss der Federfinger 5-1, der dem Typenscheibenfinger 2-1, welcher dieses Zeichen & trägt, zugeordnet ist, entsprechend kurz ausgebildet sein. Dadurch wird gewährleistet, dass dieser Federfinger 5-1 während der Bewegung wenig kinetische Energie absorbiert. Dabei ist davon auszugehen, dass der Druckhammer unabhängig von dem abzudruckenden Zeichen mit gleicher Energiemenge erregt wird. Die einzelnen Federfinger müssen nach diesen Grundsätzen eine Länge haben, welche auf die Grösse bzw. Länge der Zeichenlinie des abzudruckenden Zeichens abgestimmt ist. Ist die Zeichenlinienlänge bzw. Zeichenabdruckfläche klein, so muss der Federfinger lang sein, um viel kinetische Energie aufzunehmen; ist die Zeichenlinienlänge bzw. Zeichenabdruckfläche grösser, so muss der Federfinger kürzer sein, um weniger oder keine kinetische Energie dem Aufschlagvorgang zu entnehmen.In contrast, a correspondingly higher impact energy is required for the imprint of the character & with a character line that is significantly larger than the dot area. Accordingly, the spring finger 5-1, which is assigned to the type plate finger 2-1, which bears this symbol &, must be made correspondingly short. This ensures that this spring finger 5-1 absorbs little kinetic energy during the movement. It can be assumed that the print hammer is excited with the same amount of energy regardless of the character to be printed. According to these principles, the individual feather fingers must have a length that is matched to the size or length of the line of the character to be printed. If the character line length or character imprint area is small, the spring finger must be long in order to absorb a lot of kinetic energy; if the length of the drawing line or the printing area is larger, the spring finger must be shorter in order to draw less or no kinetic energy from the opening process.

Die Zeichenfolge in Fig. 1 ist willkürlich gewählt und dient nur dem Verständiichmachen des Prinzips der Erfindung.The character string in FIG. 1 is chosen arbitrarily and only serves to make the principle of the invention clear.

Andere Ausführungsformen der Erfindung sind denkbar.Other embodiments of the invention are conceivable.

Für Typenscheiben, welche aus einzelnen Metallfingern zusammengesetzt werden, könnte z. B. die zusätzliche Federscheibe in eine elastische Nabe mit eingegossen werden. Bei der aus einem Stück bestehenden Typenscheibe kann die Federscheibe an die Typenscheibe auch durch eine Kleb-oder Lötverbindung angeheftet werden.For type plates, which are composed of individual metal fingers, z. B. the additional spring washer can be cast into an elastic hub. In the case of the one-piece type plate, the spring washer can also be attached to the type plate by an adhesive or soldered connection.

Als besonders vorteilhaft erscheint bei der erfindungsgemässen Vorrichtung, dass

  • a) bei der Verwendung solcher Typenscheibendrucker in Textverarbeitungssystemen für das Schreiben von invididuellen Briefen ein repräsentatives optimales Druckbild eingehalten werden kann. Der Druckqualität kommt die Anpassung der Druckenergie an das einzelne Zeichen sehr entgegen;
  • b) die vorgeschlagene Lösung auch einen einfachen Übergang auf eine andere Schriftart durch Auswechseln der Typenscheibe mit der zugehörigen Federscheibe ermöglicht. (Bei einer durch Mikroprozessoren kontrollierten Lösung wäre beim Übergang von einem Zeichensatz zu einem anderen auch das Mikroprozessorprogramm umzustellen. Hierbei sind Bedienungsfehler nicht auszuschliessen);
  • c) sie durch die einfache und unaufwendige Konstruktion zu den einfachsten und auch billigsten Lösungen zählen dürfte.
It appears to be particularly advantageous in the device according to the invention that
  • a) when using such type plate printers in word processing systems for writing individual letters, a representative optimal printed image can be maintained. The print quality is very accommodating to the adaptation of the printing energy to the individual character;
  • b) the proposed solution also enables a simple transition to a different font by replacing the type plate with the associated spring washer. (In the case of a solution controlled by microprocessors, the microprocessor program would also have to be switched when changing from one character set to another. Operating errors cannot be ruled out here);
  • c) it should count among the simplest and cheapest solutions due to the simple and uncomplicated construction.

Claims (3)

1. Arrangement for adapting the impact energy of a print type in type wheel printers to the size of the character line length, characterized in that the type wheel fingers (2-1, 2-2, 2-3) of the type wheel (1) carrying one print type each (3-1,3-2,3-3) are movable against the tension of additional springs (5-1, 5-2, 5-3) in the direction of print, each finger being associated with a respective spring the dimension of which is adapted to the size of the character line length of the associated print type.
2. Arrangement according to claim 1, characterized in that the totality of all additional springs is formed by a spring disk (5) which is subdivided into spring fingers (5-1, 5-2, 5-3) pointing radially outwards, each spring finger resting against the associated type wheel finger to be congruent therewith.
3. Arrangement according to claim 2, characterized in that the length of the individual spring fingers is chosen to match the different size of the character line length of the individual print types.
EP79102155A 1978-07-22 1979-06-28 Device for adapting the type impact energy in a disc printer to the contact surface area of a character Expired EP0007454B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2832338 1978-07-22
DE19782832338 DE2832338A1 (en) 1978-07-22 1978-07-22 ARRANGEMENT FOR ADJUSTING THE IMPACT ENERGY OF A PRINT TYPE IN TYPE DISC PRINTERS TO THE SIZE OF THE DRAWING LENGTH

Publications (2)

Publication Number Publication Date
EP0007454A1 EP0007454A1 (en) 1980-02-06
EP0007454B1 true EP0007454B1 (en) 1981-12-09

Family

ID=6045157

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79102155A Expired EP0007454B1 (en) 1978-07-22 1979-06-28 Device for adapting the type impact energy in a disc printer to the contact surface area of a character

Country Status (6)

Country Link
US (1) US4278357A (en)
EP (1) EP0007454B1 (en)
JP (1) JPS5910913B2 (en)
CA (1) CA1118699A (en)
DE (2) DE2832338A1 (en)
IT (1) IT1166884B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4465387A (en) * 1982-09-30 1984-08-14 Data Motion, Inc. Daisy wheel mounting apparatus
JPH049049Y2 (en) * 1985-03-08 1992-03-06

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH485522A (en) * 1967-08-02 1970-02-15 Siemens Ag Type imprinting device for office machines, in particular typewriters, or teletyping machines
FR2230502B1 (en) * 1973-05-21 1978-12-01 Ibm
CH582067A5 (en) * 1974-10-16 1976-11-30 Hermes Precisa International
DE2614801C3 (en) * 1976-04-06 1978-09-14 Olympia Werke Ag, 2940 Wilhelmshaven Writing mechanism with a type disc
US4074798A (en) * 1976-09-01 1978-02-21 Xerox Corporation Encoded print wheel system
CH598955A5 (en) * 1976-10-19 1978-05-12 Caracteres Sa
DE2658123C3 (en) * 1976-12-22 1979-06-13 Olympia Werke Ag, 2940 Wilhelmshaven Writing mechanism with a type disc
DD131457A1 (en) * 1977-06-21 1978-06-28 Walter Mandel TYPE SUPPLIER FOR SERIAL PRINTING PLANTS

Also Published As

Publication number Publication date
CA1118699A (en) 1982-02-23
JPS5910913B2 (en) 1984-03-12
IT1166884B (en) 1987-05-06
JPS5515892A (en) 1980-02-04
DE2832338A1 (en) 1980-01-31
US4278357A (en) 1981-07-14
EP0007454A1 (en) 1980-02-06
IT7923561A0 (en) 1979-06-14
DE2961544D1 (en) 1982-02-04

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