EP0043434B1 - Imprimante matricielle contenant un porte-types oscillant - Google Patents

Imprimante matricielle contenant un porte-types oscillant Download PDF

Info

Publication number
EP0043434B1
EP0043434B1 EP19810104007 EP81104007A EP0043434B1 EP 0043434 B1 EP0043434 B1 EP 0043434B1 EP 19810104007 EP19810104007 EP 19810104007 EP 81104007 A EP81104007 A EP 81104007A EP 0043434 B1 EP0043434 B1 EP 0043434B1
Authority
EP
European Patent Office
Prior art keywords
dot
dot font
carrier
element carrier
elements
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
EP19810104007
Other languages
German (de)
English (en)
Other versions
EP0043434A1 (fr
Inventor
Norman Frederick Cole
William Duncan Thorne
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
Publication of EP0043434A1 publication Critical patent/EP0043434A1/fr
Application granted granted Critical
Publication of EP0043434B1 publication Critical patent/EP0043434B1/fr
Expired legal-status Critical Current

Links

Images

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
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/22—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of impact or pressure on a printing material or impression-transfer material
    • B41J2/31—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of impact or pressure on a printing material or impression-transfer material using a print element with projections on its surface impacted or impressed by hammers
    • 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
    • B41J1/20—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies with types or dies mounted on endless bands or the like

Definitions

  • This invention relates to impact printing and matrix printing mechanisms and apparatus of the dot forming type in general.
  • it relates to the hammer and marking element type of printers of this class in which the marking element carrier may be reversed or oscillated in the direction of travel relative to the hammers to more quickly position a desired area of the marking element adjacent to a desired hammer.
  • dot matrix printers are known in the prior art.
  • many so-called dot matrix print heads exist in which one or more wires or elongated dot forming the printing elements may be projected forward under appropriate control to impact a ribbon and drive it against a medium to be marked upon.
  • Appropriate systems for relative movement between the print head and the medium are known.
  • Such general mechanisms of this class are numerous and have been widely adapted for use and currently enjoy a high level of success.
  • These so-called wire matrix print heads and the mechanisms employed in them suffer, however, from many inherent difficulties. First, it is necessary to translate the entire print head back and forth along a line of printing or to move the paper in order to cause relative motion between the two to occur.
  • Mechanisms for horizontal translation of print heads back and forth in a repetitive and precisely controlled manner are expensive and relatively difficult to build and maintain.
  • the mass of the number of hammers in the print head limits the throughput due to the turnaround time required.
  • a variety of problems can exist when such mechanisms are out of proper adjustment. Such problems may cause distortion of or failure to create the desired printed images.
  • the general configuration uses a vertical array of print wires which limits the vertical dot placement and causes poor utilization of hammers dedicated to de- cenders. This also causes uneven wear of hammers due to usage.
  • the failures of one or more wire elements may make themselves known by distortion of virtually all of the printed material which follows the failure.
  • the inherent limitations of devices of this type include those of relatively limited speed of printing. Printing speeds in the range of only 80 to 300 characters per second with a single print head of this type are within the broad general bounds and limitations of the present technology of this sort.
  • Another general class of dot matrix printers comprises the so-called bar and helix or bar and element intersectional impact printers.
  • a moving raised ridge or print element passes behind a sheet of paper to be marked upon and is impacted by a hammer impacting the paper against the print element at a carefully controlled time to create a dot of the approximate size and shape of the intersectional area between the hammer and the print element.
  • Such printers may be utilized either as serial character printers or line printers where a number of hammers may be simultaneously employed in creating dots for the formation of characters or images. In printers of this latter type, extremely accurate control of the timing of the hammer impact relative to the exact location of the moving print element must be maintained.
  • the print element carrier is often a precision machined metal drum with raised ridges upon it.
  • the raised ridges must be very carefully spaced and dimensioned in profile in order to provide high quality, carefully controlled placement of the resulting dot marks on the medium.
  • Imaging and shadow printing occur with this technology. It limits the forms thickness and number of copies that can be made without distortion.
  • the paper movement to cause printing produces accoustical noise which is difficult to suppress. Wear, misalignment and other mechanical and physical effects may cause rapid deterioration of the printing quality in such a system and the expense of the dot forming device is considerable.
  • the shape of the dot produced is inherently limited to that of the intersection between the moving raised ridge and the hammer span. These devices do offer generally higher printing speeds in the range of 100 to 600 lines per minute which may be generally attainable with this technology.
  • U.S. Patent 4,068,583 wherein the dot elements are formed at the intersection between a generally horizontal hammer and a generally vertical raised ridge or element carried on a belt or band.
  • Appropriate paper and marking medium are interposed between the moving belt and a hammer and an impact between a raised ridge on the belt and the hammer creates and intersectional dot, a plurality of which may be created through appropriate timing of the hammer impacts with the moving belt and motion of the paper to form any desired characters.
  • the shape and form of the resulting dots is, however, limited to the intersectional area between the moving print element and the face of the print hammer so that wear on one or more print hammers and/or print elements may be apparent in the resulting print quality of many print characters.
  • This design does avoid the use of an expansive drum carrying the raised print element ridges.
  • Another class of dot matrix printers is disclosed in GB-A-1493719 which relates to a printer in which characters to be printed on a paper web comprises a plurality of grid elements produced by the striking of an inking device against the paper web by dot font elements controlled by a drive system, and in which the dot font elements are arranged upon a carrier adapted for movement in the direction of the line being printed.
  • This class of printers is based upon a single type of dot font elements arranged upon a carrier. This does not allow an easy variation of the shape or form of dots to be printed and a high speed production of characters and great character resolution to be obtained.
  • the dot matrix printer embodied according to the present invention which comprises a movable print element carrier belt, which may be a continuous loop of material provided with fingers or other movable print elements each of which has two faces, and at least one print hammer.
  • One face of the print element has a hammer impact face which may be struck by the print hammer.
  • the other face of the element carries a dot or other form of raised character element forming shape.
  • a plurality of different dot sizes and shapes are on the carrier belt of the improved printer.
  • Reversible band driving means are included to reduce the access time for positioning a given dot font area of the carrier with respect to a given hammer by driving the carrier in the direction requiring the least translation of the carrier.
  • the movable dot fonts or print elements are located on a belt or band in such a fashion that any hammer actuator operation will contact only a single element and cause only that associated element to contact a ribbon to force it against the paper making a mark of the form of the dot or print element on the face of the element.
  • the paper is supported by a platen and the appropriate controls for motion of the paper either in the vertical or horizontal direction are included.
  • FIG 1 a preferred embodiment of the present invention is shown in a pictorial and schematically representative form with the essential elements required being briefly depicted.
  • the paper or media 1 to be marked upon is shown together with an appropriate platen 2.
  • a paper motion drive means for moving paper 1 in the direction of arrow 3 would also be included but is not shown.
  • Paper 1 may be moved either continuously or intermittently as is generally known in the art and it may be understood that the vertical spacing of the dot element is primarily controlled by the degree of motion provided in indexing the paper from one dot row to the next and that spaces between characters in the vertical direction are created by advancing the paper further than for the formation of characters or for the formation of rows of dots to form characters.
  • An appropriate ribbon 4 is interposed in front of the paper 1 and may be supported ans driven by means not shown in Figure 1.
  • a movable belt or band 5 is one of the principle elements of the present invention and it is interposed in front of the ribbon 4 in a position separated from both the paper 1 and ribbon 4 and adjacent to, but separate from a bank of one or more impact hammers 6.
  • the belt or band 5 may contain one or more print element dot forming means. These are generally shown as a movable or flexible finger 7 integrally formed with belt 5 and carrying an anvil or impact face on its backside shown as 8 in Figure 1. It will be understood that the opposed face of each anvil 8 contains a raised projection in the appropriate plan or form to provide a dot of the desired shape on paper 1. This occurs when the anvil 8 is struck by one of the hammers 6 to deflect the finger 7 and impact the print element against the ribbon 4 and paper 1.
  • each flexible finger 7 on the carrier belt 5 is integrally a part of band or belt 5 at the point of attachment at the base of each finger 7. Fingers 7 may also be non-integral with belt 5, but attached thereto by rivets or other suitable means.
  • timing marks or slots 9 are shown on band 5.
  • either optically transparent slots or magnetic reluctance or mechanically sensible marks may be made on a belt or band 5 in order to approximately time the motion, velocity and direction of the belt 5 past the hammer array 6.
  • Additional marks 9A are shown for use in identifying the start and end of each of the various dot font size and shape areas on the belts.
  • the paper tractor or moving means may take a variety of forms including friction wheel drive, reel-to-reel drive of a continuous paper form, perforated form tractor means or suitable moving bed or platen drive means for advancing the paper.
  • a variety of optical or mechanical emitters may be connected with the paper drive means to accurately gauge the degree of motion produced so that the vertical spacing of dot elements and characters eventually produced can be accurately controlled.
  • the platen 2 will be understood to be schematic in representation only. Round or rotating platens of any desired material or shape can advantageously be employed according to the specific requirements of the paper medium 1 and the dot forming elements and ribbon elements.
  • ribbon 4 may be an inked ribbon or a carbon film transfer type of ribbon or any of a variety of suitable ink or marking material carrying means for either additive or subtractive color formation. Ribbon 4 is indicated as generic in form only since it would be well understood in the art that numerous colors can be provided in bands or stripes on a given ribbon 4 and that various technologies for constructing a suitable ribbon 4 that provide the desired type of transfer of marking material to the surface of the paper by impact between them are known.
  • the ribbon may be dispensed with and entirely eliminated if self-marking impact sensitive paper well-known in the art is utilized.
  • a bank of one or more hammers 6 is generally indicated as hammer bank 6. It is intended to encompass all of the individual hammers 6 that may be contained within it and is generally positioned on one side of the moving belt or band 5.
  • the suitable marking ribbon 4 and paper 1 are interposed on the other side of the belt or band 5 with the paper 1 supported on a platen 2 as generally indicated.
  • a belt and ribbon drive motor 14 is generally indicated in Figure 1.
  • An optical or magnetic position emitter sensor 24 is generally shown in Figure 1 with belt or band 5 passing between the two halves of the sensor 24.
  • Sensor 24 may be either optical or magnetic and will operate based on the emitter markings or apertures 9 or 9A as shown in Figure 1 which are placed on belt or band 5 as previously described.
  • sensor 24 may comprise sources of light and photo cells interposed on opposite sides of the moving band or belt. These will produce electrical pulses varying in amplitude according to the presence of an optically transmissive or opaque portion of belt or band 5 passing through the sensor.
  • the resulting electrical signal train may be appropriately shaped as a string of pulses for timing or counting.
  • a printing operation generally as depicted in Figure 1 is performed as follows:
  • the width of the individual hammers 6 is conveniently chosen to be an integral number of character widths, at least one, and perhaps 2 or more to reduce the expense of hammer mechanisms. It will be understood that the number of hammers 6 will be dependent upon the repetition rate at which the individual hammers may be operated and upon the general throughput of printing that is required.
  • the translational direction and velocity with which belt or band 5 is driven and which controls the rate of movement of the print elements across the print line is dependent upon the hammer impact repetition rate and upon the print element spacing desired on the resulting image.
  • paper 1 When all of the desired print positions along a given print row in the print line have been provided and each of the print hammers has been fired at the appropriate number of times and places to create the dots, paper 1 will be moved to the next desired row position and the printing operation will be repeated. It will be understood that the operations can cause any print format to be printed under program control and that the vertical printed element spacing can be controlled by the degrees of rotation of the paper feed motor or mechanism (not shown in Figure 1).
  • a print belt or band 5 is illustrated in greater detail in a pictorial view. It may be appreciated that provision may be made for an individual user or customer to change either or both the shape or size of the dot elements utilized in the printer by programming control over which dot font elements are struck. Also printing belts or bands 5 of this type will not be as expensive or complex as printing drums or other precision formed devices generally used in the art. For example, if large character printing is desired, dot print elements having larger diameter dots, for example 0.635 mm (0,025") diameter dots, can be used.
  • a dot element of approximately 0.25 mm (0.010") in diameter could be utilized at 0.127 mm (0.005") spacing in both the horizontal and vertical directions to create a high density image in which the individual dots will partially overlap one another.
  • Appearance improvement in the resulting characters can be created also by adjusting both horizontal and vertical spacings of the print elements as controlled by varying the timing and degree of motion of paper movement and timing of hammer impacts.
  • a vertical spacing of 0.25 mm (0.01") and a horizontal spacing of 0.50 mm (0.02") as used in some alphanumeric formats may have its appearance improved if the print elements are made oblong and approximately of the same general dimensions of 0.25 by 0.50 mm. Equivalent to this would be the multiple impact of a smaller dot at each of two adjacent locations to partially overlap and create the appearance of an oblong dot, but this would greatly reduce throughput since perhaps double the number of hammer strikes would be required.
  • the print belt 5 could be mounted within a cartridge system to provide for a clean hands changing of the belt and for identification of the belt contained within it.
  • cartridges may carry mechanical or electrical encoding means on them to inform a using system by actual insertion of the cartridge into it as to which type of programming or which type of dot elements are carried within it.
  • the belt or band 5 may be conveniently made of steel or stainless steel. Typical specifications are that the band be approximately 0.127 mm (0.005") thick and approximately 12.5-25 mm (1-2") wide (or wider as desired).
  • the fingers 7 are integrally formed by machining, stamping or etching them to leave base portions attached to belt 5 as shown. Radiused ends on fingers 7, sloped faces on anvils 8 and the means of attaching dot elements 30 to fingers 7 opposite anvils 8 are all obvious to one of skill in the art as shown in the figures.
  • Flexible or spring fingers 7 formed in the belt or band 5 may have the individual pairs of anvil 8 and dot forming elements 30 connected to them through an aperture (not shown). They may be staked and swaged in place or welded as the case may be.
  • Figures 3A through 3F illustrate various print element font sizes and shapes that may be employed on the spring fingers 7 of belt 5 in Figure 2.
  • Figure 3A shows a detail of a horizontally elongated or eliptical dot face element 30.
  • Figure 3B illustrates an approximately circular dot font element with a small diameter circle.
  • Figure 3C illustrates a vertically elongated or eliptical dot font shape.
  • Figures 3D through 3F illustrate larger size font elements similar to the design of those in Figure 3A through 3C.
  • the drive motor 14 is controlled in speed and direction of rotation by a program control operating from pulses derived from another optical emitter system.
  • An optical emitter disc 15 is affied to the motor drive shaft and an optical source and sensor configuration 16, similar to the source sensor combination 24 for example, is shown. Suitable timing marks or apertures may be made in the emitter 15 for enabling the sensor 16 and an attached control system to determine the direction of rotation of the motor 14.
  • full control over the position, direction and location of the various font elements and font style element areas on the belt opposite the desired hammer 6 may be maintained at all times.
  • the print element horizontal velocity should be adjusted in an inverse manner to maintain the desired printing quality.
  • This can be easily controlled by using a stepper motor for motor 14 and varying the pulse rate for motor operation.
  • the pulse rate can be varied in accordance with program control selecting the various dot font sizes and shapes for printing desired characters and desired positions on paper 1.
  • the belt or band 5 is securely mounted in tension between the drive motor 14 and a bearing block 17 and is supported by pulleys 18 having rubber capstan drive tire elements 19 as shown.
  • Throughput calculations for typical performance of the subject invention are determined as follows.
  • the data required for computing the throughput is: hammer repetition rate, band dot pitch or element to element spacing on the band, desired printed dot pitch on paper and paper motion time to index from row to row.
  • a formula for throughput in lines per minute can be expressed as follows: For example, assuming that printing in an alphanumeric character set is utilized and that each of the hammers 6 spans two character positions and the intervening space between two adjacent characters, and utilizing a seven dot high by four, five, six, or seven dot wide character matrix with the following assumptions: hammer impact repetition rate is one millisecond, the band dot pitch is 5 mm (0.2") plus an additional 10.16 mm (0.04") of spacing to prevent contact of two adjacent anvils by a single hammer, desired print dot pitch of 0.5 mm (0.02”) and assuming paper indexing or band turnaround time of 5 milliseconds the band speed is as given by formula (2).
  • the resulting throughput of printing will vary based upon the desired printing density of dots as controlled by the horizontal and vertical indexing or spacing of the individual dots and by the consideration of the number of dot rows included in each line of printed characters. For example, if there are 12 dot rows on each line and the band speed is approximately 1/2 the previous example rate in order to create the double density in the horizontal direction, the horizontal print element spacing will be 0.25 mm (0.01") and the resulting throughput will be approximately 172 lines per minute. Further decreases in throughput result as the horizontal print elements per line increase. Effectively, the number of hammer strikes required to generate all the dots on a given horizontal line are the controlling factor.
  • the electronics will determine the shortest route to the desired band section for the element desired and the initial direction of travel.
  • the rate of section selection travel could be 200 inches/sec. with 20 ms accell-decel time.
  • the time for print element selection would be approximately 100 ms. It would be advantageous to provide forms back up to allow repetitive printing of the same print element to be printed in a sequence of lines, then returned to the required distance to cause printing with the newly selected print element. The time for print element selection could be overlapped with the forms back up.
  • the various dot font sizes and shapes may be grouped together in a section of the belt and other dot font sizes and shapes may be grouped together in other areas of the belt. Then, for quickest access to a given desired font size and shape, the band travel may be reversed or driven forward as necessary to position the desired dot element in front of any given hammer.
  • This oscillatory band drive can be shown to improve throughput as follows.
  • Additional benefits are power reduction, noise reduction and reduced heating of hammer assembly, as well as improved hammer life due to fewer impacts required.

Landscapes

  • Character Spaces And Line Spaces In Printers (AREA)

Claims (8)

1. Appareil d'impression à matrice de points pour imprimer des points sur une ligne d'impression désirée d'une feuille d'enregistrement, comprenant:
une platine (2) disposée au moins sur la longueur de la ligne d'impression désirée.
un porte, éléments d'impression par points mobile (5) adjacent à ladite platine (2) et généralement parallèle à celle-ci, ledit porte éléments d'impression parcourant la ligne d'impression désirée,
une pluralité d'éléments d'impression par points (30) montés sur une surface dudit porte éléments (5) faisant face à ladite platine, lesdits éléments d'impression par points étant séparés les uns des autres par au moins une première largeur mesurée le long de la ligne d'impression désirée,
un moyen d'entrainement réversible sollicitant ledit porte éléments d'impression par points (5) pour entrainer ledit porte éléments à une vitesse prédéterminée dans l'une et l'autre directions parallèles à ladite platine afin de provoquer l'entrainement dudit porte éléments (5) et desdits éléments d'impre- sion par points (30) sur toute la longueur de la ligne d'impression désirée dans l'une ou l'autre direction,
au moins un marteau d'impression (6) adjacent audit porte éléments d'impression par points (5) et disposé de telle faç que ledit porte éléments d'impression par points passe entre ledit marteau d'impression (6) et ladite platine (2), la largeur de la face de frappe dudit marteau d'impression, mesurée le long de la ligne d'impression désirée étant au moins égale à un nombre entier de largeurs de caractères dans n'importe quel format désiré d'impression à matrice, ladite largeur de la face de frappe étant inférieure à ladite première largeur de l'espacement entre lesdits éléments d'impression par points adjacents (30) portés par ledit porte éléments (5),
des moyens d'actionnement du marteau raccordés audit marteau (6) pour l'actionner afin qu'il frappe le porte éléments d'impression par points (5), chaque frappe entrainant au moins une partie dudit porte éléments et un élément d'impression par points (30) porté par celui-ci, vers ladite platine (2),
des moyens pour décaler ladite feuille dans une direction pratiquement orthogonale à la ligne d'impression désirée, ledit appareil d'impression à matrice de points étant caractérisé en outre en ce que: lesdits éléments d'impression par points portés par ledit porte éléments sont de dimensions différentes,
le moyen de chronologie raccordé auxdits moyens d'actionnement de marteaux pour que la frappe soit exécutée lorsque ledit élément d'impression (30) de la taille désirée est adjacent à une partie de la ligne d'impression désirée où l'on désire imprimer un point,
une série de marques de chronologie (9) et de tailles d'éléments d'impression (9a) régulièrement espacées, sont prévues sur ledit porte éléments d'impression par points (5),
un détecteur (24) desdites marques est monté dans une position fixe adjacente audit porte éléments d'impression par points pour détecter lesdites marques et générer des signaux de chronologie à utiliser pour l'actionnement desdits marteaux.
2. Appareil selon la revendication 1 caractérisé en ce qu'il comporte en outre:
un milieu de marquage interposé entre lesdits éléments d'impression par points sur ledit porte éléments (5) et ladite platine (2) et le long de la ligne d'impression désirée pour marquer tous matériaux introduits entre ledit porte éléments d'impression par points et ladite platine, et
un moyen d'entrainement pour déplacer ledit milieu de marquage afin d'exposer une nouvelle surface desdits éléments d'impression par points.
3. Appareil selon la revendication 1 ou 2 caractérisé en ce que:
ledit porte éléments d'impression par points (5) comprend une courroie de matériau flexible et lesdits éléments d'impression par points (30) sont disposés sur une surface de ladite courroie faisant face à ladite platine.
4. Appareil selon la revendication 3 caractérisé en ce que:
ledit porte éléments d'impression par points (5) comprend en outre une pluralité d'enclumes de frappe (8) montées sur la surface de ladite courroie directement opposée à chacun desdits éléments d'impression par points disposés sur las surface de ladite courroie faisant face à ladite platine, une de ces enclumes étant prévue pour chacun des éléments d'impression par points.
5. Appareil selon la revendication 1 ou 2, caractérisé en ce que:
lesdits éléments d'impression par points (30) sont montés sur des éléments flexibles fixés audit porte éléments d'impression par points (5), la base de chacun desdits éléments flexibles étant solidaire du porte éléments d'impression par points (5), une partie allongée partant de ladite base, la partie extrême de ladite partie allongée étant mobile à partir du plan approximatif dudit porte éléments d'impression par points grâce à la flexibilité desdits éléments flexibles autour de leur base.
6. Appareil selon las revendication 5 caractérisé en ce que:
lesdits éléments flexibles son orientés par rapport à la direction du mouvement dudit porte éléments d'impression par points (5) de façon que l'axe longitudinal desdits éléments flexibles soient généralement orthogonal à ladite direction du mouvement dudit porte éléments d'impression par points.
7. Appareil selon l'une quelconque des revendications précédentes, caractérisé en ce que:
lesdites marques (9,9a) sont composées d'ouvertures dans ledit porte éléments d'impression par points (5) et en ce que ledit détecteur comprend une source de lumière disposée adjacente à un côté dudit porte éléments d'impression par points et un détecteur diposé par rapport à ladite source de lumière et audit porte éléments d'impression par points, pour recevoir la lumière de ladite source chaque fois qu'une dite ouverture dans ledit porte éléments d'impression par points passe entre ladite source et ledit détecteur.
8. Appareil selon l'une quelconque des revendications précédentes caractérisé en ce que lesdits éléments d'impression par points (30) sur le porte éléments (5) ont des formes différentes.
EP19810104007 1980-07-09 1981-05-25 Imprimante matricielle contenant un porte-types oscillant Expired EP0043434B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US16718180A 1980-07-09 1980-07-09
US167181 1980-07-09

Publications (2)

Publication Number Publication Date
EP0043434A1 EP0043434A1 (fr) 1982-01-13
EP0043434B1 true EP0043434B1 (fr) 1984-09-12

Family

ID=22606288

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19810104007 Expired EP0043434B1 (fr) 1980-07-09 1981-05-25 Imprimante matricielle contenant un porte-types oscillant

Country Status (3)

Country Link
EP (1) EP0043434B1 (fr)
JP (1) JPS5729468A (fr)
DE (1) DE3165975D1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58107368A (ja) * 1981-12-21 1983-06-27 インタ−ナシヨナル　ビジネス　マシ−ンズ　コ−ポレ−シヨン ドツトマトリツクスプリンタ
US4540296A (en) * 1981-12-21 1985-09-10 International Business Machines Corporation Bar band intersectional matrix printer
CA1200431A (fr) * 1982-06-30 1986-02-11 Eric G-H. Lean Imprimante matricielle par points
US4596479A (en) * 1982-06-30 1986-06-24 International Business Machines Corporation Dot matrix printer

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3605613A (en) * 1968-06-04 1971-09-20 Gen Electric Reinforced type carrier belt for impact printing apparatus
US3772988A (en) * 1970-03-20 1973-11-20 Memorex Corp Print carrier and transportable cartridge for same
JPS5331923B2 (fr) * 1972-07-26 1978-09-05
DE2432499A1 (de) * 1974-07-04 1976-01-22 Siemens Ag Mechanischer drucker
JPS51125522A (en) * 1975-04-21 1976-11-02 Nippon Telegraph & Telephone Printing system for printer
JPS5221916A (en) * 1975-08-12 1977-02-18 Sharp Kk Printer
JPS5854989B2 (ja) * 1975-12-13 1983-12-07 日本電気株式会社 逐次式プリンタ

Also Published As

Publication number Publication date
DE3165975D1 (en) 1984-10-18
EP0043434A1 (fr) 1982-01-13
JPS5729468A (en) 1982-02-17

Similar Documents

Publication Publication Date Title
JPH0338989B2 (fr)
US4050563A (en) Apparatus for selectable font printing
US4428284A (en) Band and hammer dot matrix printer
EP0036970B1 (fr) Imprimante en matrice de points
US4210404A (en) Printhead compensation arrangement for printer
US4428285A (en) Oscillatory band and hammer dot matrix printer
US4236835A (en) Printer system with compressed print capability
US3804008A (en) Hammer actuating mechanism and drum design for printers
EP0043434B1 (fr) Imprimante matricielle contenant un porte-types oscillant
US5007748A (en) Printer for bar code using thin and thick bar code fonts
CA1124135A (fr) Imprimante par points adressable
US4368993A (en) Replaceable assembly for multicolor printing
US4068583A (en) Hammer actuated dot matrix pattern printer
CA1165173A (fr) Imprimante a matrice de points avec marteaux et bande oscillante
US3399619A (en) Type arrangement in endless band line printers
US4463676A (en) Printing apparatus
GB2103547A (en) Cross hammer dot printer
US4540296A (en) Bar band intersectional matrix printer
GB2131350A (en) Dot printer
EP0082332B1 (fr) Imprimante matricielle par points
US4005650A (en) Print hammer
US4082035A (en) High speed printer having segmented drum
US3611922A (en) Front printer
US4428692A (en) High speed impact matrix printer
SU1296445A1 (ru) Печатающее устройство с лепестково-дисковым литероносителем

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): DE FR GB IT

17P Request for examination filed

Effective date: 19820202

ITF It: translation for a ep patent filed

Owner name: IBM - DR. ARRABITO MICHELANGELO

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): DE FR GB IT

REF Corresponds to:

Ref document number: 3165975

Country of ref document: DE

Date of ref document: 19841018

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19900424

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19900529

Year of fee payment: 10

ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19910419

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19920131

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19920303

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19920525

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19920525