US3776340A - Recording instrument with mosaic printing head - Google Patents

Recording instrument with mosaic printing head Download PDF

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Publication number
US3776340A
US3776340A US00135566A US3776340DA US3776340A US 3776340 A US3776340 A US 3776340A US 00135566 A US00135566 A US 00135566A US 3776340D A US3776340D A US 3776340DA US 3776340 A US3776340 A US 3776340A
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US
United States
Prior art keywords
printing head
mosaic
printing
needles
closed curve
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 - Lifetime
Application number
US00135566A
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English (en)
Inventor
E Moser
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.)
RENA BUROMASCHINENFAB AND C GmbH
Original Assignee
RENA BUROMASCHINENFAB AND C GmbH
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
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Publication of US3776340A publication Critical patent/US3776340A/en
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Expired - Lifetime 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
    • B41J19/00—Character- or line-spacing mechanisms
    • B41J19/18—Character-spacing or back-spacing mechanisms; Carriage return or release devices therefor
    • B41J19/20—Positive-feed character-spacing mechanisms
    • 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
    • B41J25/00—Actions or mechanisms not otherwise provided for
    • B41J25/001—Mechanisms for bodily moving print heads or carriages parallel to the paper surface
    • B41J25/006—Mechanisms for bodily moving print heads or carriages parallel to the paper surface for oscillating, e.g. page-width print heads provided with counter-balancing means or shock absorbers

Definitions

  • the printing head carrying a plurality of driveable printing rods is caused to move bodily through an orbit which is so related to relative translative movement between the printing head and printing medium that at the moment of printing impact such relative movement is made zero.
  • the indicia are in such units presented by a picture-dot system.
  • Two kinds of devices for setting forth the desired indicia are known in mosaic printing heads.
  • suitable dotmaking means are provided at each desired mosaic point and the required dot-making means for each character are activated simultaneously.
  • One disadvantage of such a system is that at a given writing output the needles must be activated at a much higher frequency.
  • the recording instruments with mosaic printing heads have, however, a printing output which is too low to meet usual requirements. Furthermore, there is the disadvantage that the print material can be damaged through the movement of the recording needles, particularly in the case of the'so-called flying writing which works with a continuous feed of the head relative tothe print material.
  • the purpose of the present invention is to produce a recording instrument with mosaic printing head of the above-mentioned type which has an improved printing output in characters per second without damaging the print material or without diminishing the recording quality.
  • the printing needles are activated during a continuous feed movement of the mosaic printing head.
  • the needles must beactivated with considerable energy to obtain the desired, possibly large, number of copies.
  • the present invention does not only enlarge the relatively small stroke of the printing needles advantageously in a flying feed system but also cancels the relative movement between the print material and the printing needles which would otherwise existduring the stroke, namely, at the moment'of writing. This makes possible a clear print and avoids damage to the print material. Furthermore, the wear of the printing needles and the tracks is materially reduced.
  • a positive driving systemr can be utilized for the drive of the mosaic printing head.
  • This driving system can for example be a pivoted cam or a reciprocating cam which causes the mosaic printing head to trace the desired. pattern.
  • This driving system can, according to a further characteristic of the invention, be provided with an eccentric mounted near the output point of the mosaic printing head, with the mosaic printing head at its other end 7 being supported both rotatably and slidingly.
  • This provides a simple construction for causing the mosaic printing head to trace during the operation and exactly predetermined closed curve.
  • the mosaic printing head moves with a continuous feed.
  • a driven gear is caused to roll ona rack to provide the feed of the mosaic printing head.
  • the eccentric shaft and the driven gear can according to a further characteristic of the invention be connected through direct driving means.
  • the direct driving means can, for example, be a belt drive.
  • the eccentric shaft canbe directly connected to a drive motor.
  • FIG. 1 is a top view of a recorder head of the invention
  • FIG. 2 is a cross-sectional view along the linell-Jl of FIG. 1;
  • FIG. 3 is a schematic illustration of the pattern of movement of the mosaic printing head of FIG. 1;
  • FIG. 4 is a different embodiment of the recording instrument of the invention.
  • the recording instrument of the invention comprises substantially a frame 1 which is formed on the side portions 2 and 3, the track 4, the rack 5 and the platen 6.
  • a guide block 7 is movable back and forth on the track 4, and the mosaic printing head 8 is mounted thereon.
  • This mosaic printing head 8 has guide channels for the electromagnets 10 which drive the printing needles 9 (FIG. 2). Near the mouthpiece zone 11 of the printing head 8 there is provided a bearing 12 for the eccentric 13. At the other end of the mosaic printing head 8, namely at the side containing the electromagnets 10, there is mounted a guide 15 for a slider 16 which latter is rotatably supported on a pin 17.
  • the eccentric 13 is arranged on a shaft 18 which is connected to a driving motor 19. This shaft 18 is rotatably supported in the guide block 7. Further, a gear 20 and a control disk 21 are provided on the shaft 18.
  • the gear 20 drives through a toothed belt 22, the gears 23 and 24 which are secured on the pin 17.
  • the gear 24 rolls on the rack
  • the guide block 7 is moved in the longitudinal direction of the rack through the motor 19, the shaft 18, the gear 20, the toothed belt 22, the gear 23 and the gear 24. This provides a continuous feed due to the rolling of the gear on the stationary rack 5.
  • the shaft 18 rotates the eccentric 13 and thereby moves the mosaic printing head 8 through a closed curve path.
  • the mosaic printing head 8 thus slides on the slider 16 which during this movement rotates about the point 17.
  • the ratios of the gear system are so chosen that a selected feed path of the guide block 7 corresponds to each rotation of the eccentric 13 according to the distance between the characters, in order to permit a vertical row writing of the symbols.
  • the printing needles 9 required for each character are selected during the eccentric stroke and are driven from the needle area by the electromagnets 10.
  • the selection is doen by means of a matrix.
  • the time period for energizing the electromagnet 10 is determined by the control disk 21, namely through a contact or a light barrier. This time period is preferably so chosen that the needle stroke movement is completed when the eccentric 13 is in printing position.
  • This recording instrument ofthe invention enlarges the relatively small stroke of the printing needles through the additional stroke of the eccentric 13, overcomes the undesired relative movement between print material and printing needles 9 during the stroke, namely at the moment of writing, reduces the wear on the printing needles and the tracks and in addition permits in a simple manner a continuous feed of the guide block 7.
  • FIG. 4 illustrates an embodiment of the recording in strument of the invention which can, for example, be used for writing on punched cards.
  • the punched card which has already been punched in a previous operation is in this operation to be labeled.
  • the recorder head 8 is in this case arranged stationarily while the goods to be labeled, the punched card 26, is moved continuously.
  • the transporting of the print material, the punched card is preferably accomplished by pairs of rolls 27,28 and 29,30 which are driven synchronously with the eccentric drive through suitable gearing.
  • the printing needles 9 which are activated to print are caused by means of an eccentric to move during the moment of writing in the direction of the feed movement of the print material at an orbital speed which corresponds to the transportingspeed of the print material.
  • the present invention also makes it possible to construct a recording instrument with a mosaic printing head in such a manner as to obtain a material improvement of the writing output in terms of characters per second.
  • the printing needles can be moved at a higher frequency without damaging the print material.
  • a mosaic printing head movably supporting therewithin a plurality of selectively actuable printing needles and having a mouthpiece end through which said printing needles are extendible;
  • feed drive means for causing relative feeding movement between said mosaic printing head as a whole and the printing medium in a direction transverse of said printing needles;
  • said oscillating means including an eccentric engaging the mosaic printing head near the mouthpiece end thereof and means supporting the other end of the mosaic printing head rotatably and slidingly;
  • said supporting means including a slider slidable in a groove in said mosaic printing head and a pin for rotatably supporting said slider for causing the mo saic printing head to move through said closed curve.
  • said feed drive means includes a rack and a driven gear engaged with said rack and means positively and rotatably drivingly interconnecting said driven gear with said oscillating means.
  • a mosaic printing head movably supporting there within a plurality of selectively actuable printing needles and having a mouthpiece end through which said printing needles are extendable;
  • feed drive means for causing relative feeding movement between said mosaic printing head as a whole and the printing medium in a direction transverse of said printing needles;
  • said oscillating means including an eccentric engaging the mosaic printing head near the mouthpiece end thereof and means supporting the other end of the mosaic printing head rotatably and slidy;
  • said feed drive means including a track and a guide block slidable along said track, said eccentric being rotatably driven and being rotatably carried by said guide block, said means supporting the other end of said mosaic printing head comprising a slider supported by said guide block for rotation relative thereto.
  • a mosaic printing head movably supporting therewithin a plurality of selectively actuable printing needles and having a mouthpiece end through which said printing needles are extendible;
  • feed drive means for causing relative feeding move ment between said mosaic printing head as a whole and the printing medium in a direction transverse of said printing needles;
  • said means oscillating said mosaic printing head as a whole for moving said mouthpiece end through a closed curve; said closed curve including a portion parallel with the direction of said feeding movement, said oscillating means including an eccentric engaging the mosaic printing head near the mouthpiece end thereof and means supporting the other end of the mosaic printing head rotatably and slidy;
  • said feed drive means including a fixed rack and a driven gear engaged therewith for providing said feeding movement, said positively interengaging printing.
  • ' means including a rotative belt drive between said eccentric and said driven gear.
  • a mosaic printing head movably supporting therewithin a plurality of selectively actuable printing needles and having a mouthpiece end through which said printing needles are extendible;
  • feed drive means for causing relative feeding movement between said mosaic printing head as a whole and the printing medium in a direction transverse of said printing needles;
  • actuating means supported on said mosaic printing head for extending selectable ones of said printing needles, a guide block adjacent said mosaic printing head, first and second shafts extending rotatably through said guide block toward the mouthpiece end and the other end of said mosaic printing head respectively, said oscillating means including an eccentric rotatably received in said mosaic printing head and carried by said first shaft for noncoaxial rotation therewith, said oscillating means further including a slider rotatably supported by said second shaft and means on said mosaic printing head defining a guide extending toward said eccentric and adjacent said other end of said mosaic printing head for slidably receiving said slider and drive means for'rotating said first shaft so as to cause said mouthpiece end of said mosaic printing head to move through said closed curv'e, said closed curve being defined by the inter-relationship of said'eccentric and slider with respect to said mosaic printing head.
  • a recording instrument in which said closed curve has a major axis extending transversely of said printing needles and wherein said other end of said mosaic printing head is constrained by said slider to movement through a. substantially figure 8 shape and having a major axis transverse to the major axis of said closed curve.
  • a recording instrument including a track extending transversely of said first and second shafts and slidably carrying said guide block, said feed drive means including a rack extending parallel to said track and a driven gear on said second shaft and drive means positively interconnected to said driven gear, and motor means positively interconnected to the first shaft and through said drive means to said driven gear for energizing said means for oscillating said mosaic head and said feed drive means in such manner that movement of said mouthpiece end along said closed curve into adjacency with the printing medium cancels said feeding movement during

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US00135566A 1970-04-24 1971-04-20 Recording instrument with mosaic printing head Expired - Lifetime US3776340A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702020127 DE2020127A1 (de) 1970-04-24 1970-04-24 Schreibwerk mit Mosaikdruckkopf

Publications (1)

Publication Number Publication Date
US3776340A true US3776340A (en) 1973-12-04

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ID=5769256

Family Applications (1)

Application Number Title Priority Date Filing Date
US00135566A Expired - Lifetime US3776340A (en) 1970-04-24 1971-04-20 Recording instrument with mosaic printing head

Country Status (6)

Country Link
US (1) US3776340A (de)
BE (1) BE766131A (de)
DE (1) DE2020127A1 (de)
FR (1) FR2090561A5 (de)
LU (1) LU62912A1 (de)
NL (1) NL7103878A (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3817365A (en) * 1972-08-09 1974-06-18 Triumph Werke Nuernberg Ag Automatic print head shifting device
US3910395A (en) * 1974-03-06 1975-10-07 Ibm Apparatus for print head retraction to facilitate paper insertion
US3949851A (en) * 1975-01-24 1976-04-13 Victor Comptometer Corporation Motion translation means for high speed printer print head
US4227455A (en) * 1978-12-29 1980-10-14 International Business Machines Corporation Suspension arrangement for an oscillating body
US4526486A (en) * 1983-02-07 1985-07-02 Oki Electric Industry Co., Ltd. Serial printer
US20070084602A1 (en) * 2003-04-29 2007-04-19 Sebastiao Curimbaba Proppant for hydraulic fracturing of oil and gas wells and process for decreasing or eliminating "flow-back" effect in oil and gas wells

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2802414A (en) * 1954-10-13 1957-08-13 Ibm Wire printer
US2954161A (en) * 1956-03-27 1960-09-27 Olivetti & Co Spa Tape reader
US3025348A (en) * 1956-05-18 1962-03-13 Handley John High-speed printing machines

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2802414A (en) * 1954-10-13 1957-08-13 Ibm Wire printer
US2954161A (en) * 1956-03-27 1960-09-27 Olivetti & Co Spa Tape reader
US3025348A (en) * 1956-05-18 1962-03-13 Handley John High-speed printing machines

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3817365A (en) * 1972-08-09 1974-06-18 Triumph Werke Nuernberg Ag Automatic print head shifting device
US3910395A (en) * 1974-03-06 1975-10-07 Ibm Apparatus for print head retraction to facilitate paper insertion
US3949851A (en) * 1975-01-24 1976-04-13 Victor Comptometer Corporation Motion translation means for high speed printer print head
US4227455A (en) * 1978-12-29 1980-10-14 International Business Machines Corporation Suspension arrangement for an oscillating body
US4526486A (en) * 1983-02-07 1985-07-02 Oki Electric Industry Co., Ltd. Serial printer
US20070084602A1 (en) * 2003-04-29 2007-04-19 Sebastiao Curimbaba Proppant for hydraulic fracturing of oil and gas wells and process for decreasing or eliminating "flow-back" effect in oil and gas wells
US7954548B2 (en) 2003-04-29 2011-06-07 Mineracao Curimbaba Ltda. Proppant for hydraulic fracturing of oil and gas wells

Also Published As

Publication number Publication date
LU62912A1 (de) 1971-08-26
NL7103878A (de) 1971-10-26
FR2090561A5 (de) 1972-01-14
DE2020127A1 (de) 1971-11-18
BE766131A (fr) 1971-09-16

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