US3874492A - Line-writing apparatus with plural print heads in parallel rows - Google Patents

Line-writing apparatus with plural print heads in parallel rows Download PDF

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Publication number
US3874492A
US3874492A US359559A US35955973A US3874492A US 3874492 A US3874492 A US 3874492A US 359559 A US359559 A US 359559A US 35955973 A US35955973 A US 35955973A US 3874492 A US3874492 A US 3874492A
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US
United States
Prior art keywords
units
combination
record carrier
scribing
carrier
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Expired - Lifetime
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US359559A
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English (en)
Inventor
Kurt Hurst
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Robert Bosch GmbH
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Robert Bosch GmbH
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Publication date
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Publication of US3874492A publication Critical patent/US3874492A/en
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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
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/54—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed with two or more sets of type or printing elements
    • 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
    • B41J2/385—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective supply of electric current or selective application of magnetism to a printing or impression-transfer material
    • B41J2/425—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective supply of electric current or selective application of magnetism to a printing or impression-transfer material for removing surface layer selectively from electro-sensitive material, e.g. metal coated paper

Definitions

  • ABSTRACT A strip-shaped record carrier having two oppositely extending longitudinal margins is advanced in its direction of elongation.
  • a pair of scribing units are located at opposite lateral sides of the carrier, and the drive is provided for moving these units in unison and in mutually opposite directions in such a manner that as one unit traverses the record carrier from one to the other margin thereof, the second unit will traverse the record carrier from the other to the one margin thereof, and the two units will reach the respectively opposite margins at the same time.
  • the units are spaced longitudinally of the record carrier by a distance corresponding to the spacing between two consecutive lines which are to be recorded on the carrier.
  • the present invention relates to a line writing apparatus. and more particularly to a high-speed linewriting apparatus for making recordings on a moving strip shaped carrier.
  • one feature of the invention resides, in an apparatus of the character described, whose purpose is to produce transversely extending parallel lines of indicia on a longitudinally moving strip shapcd record carrier having two opposite longitudinally extending margins.
  • a combination which comprises mounting means spanning the record carrier transversely of the path of movement thereof.
  • the combination further comprises a first and a second indicia-scribing unit carried by the mounting means and movable thereon transversely of the aforementioned path.
  • the units are spaced longitudinally ofthc path by a distance corresponding to the spacing between two consecutive ones of the lines to be produced.
  • Drive means is provided for moving the units in mutually opposite directions and at such speed that the second unit traverses the distance from one to the other of the margins by the time the first unit traverses the distance from the other to the one margin, and vice versa.
  • one unit always serves to write or scribe the indicia which make up a complete line.
  • the other unit moves in counter-direction to the firstmentioned unit, and by the time the first unit reaches the end of the line which it has scribed, the other unit will have reached the beginning of the next line so that it is ready to start forming the indicia of this next line while the first unit is now being returned in direction opposite to its previous movement and to that of the second unit.
  • the scribing units are each mounted on a carriage which is guided along mounting means, such as for instance at least one guide rod spanning the entire width of the record carrier.
  • the two units are advantageously driven by a common drive utilizing an elongated flexible element which forms a closed loop and is trained about two rollers located at opposite lateral sides of the record carrier.
  • FIG. I is a somewhat simplified front view of an apparatus according to the present invention.
  • FIG. 2 is a top-plan view of FIG. 1;
  • FIG. 3 is a simplified fragmentary side view of the apparatus shown in FIGS. I and 2;
  • FIG. 4 is a diagrammatic illustration of a drive for the scribing units, utilizing a cord.
  • FIGS. I-4 illustrate an exemplary embodiment of an apparatus according to the present invention.
  • the apparatus utilizes a frame having a base plate 10, one side portion II and an opposite side portion 12.
  • Reference numeral 13 designates a record carrier which is strip-shaped and is advanced in the direction of its elongation by a roller 14.
  • the lines of indicia are to be inscribed on the record carrier transversely to the path of movement thereof, that is from left to right, or vice versa, in FIG. 2.
  • Record carriers of this type, carrying on their surface a coating which can be burned away by contact with a heated electrode, are well known in the art and require no detailed discussion,
  • This mounting means is in form of rods 15 and 16 on the one hand, and I7 and 18 on the other hand, all of which are secured to the side portions II and 12 of the frame. They thus extend in parallelism with the base plate 10, as is particularly clearly evident from FIG. I.
  • a carriage I9 is mounted for movement along the rods 15 and 16 and carries a first scribing unit 2]. and a second scribing unit 22 is mounted on a carriage 20 which is supported by the rods [7 and 18.
  • the two carriages I9 and 20 with their respective scribing units 21 and 22 can move along their guide rods 15 and 16, and 17 and 18, respectively, in direction transverse to the elongation of the record carrier 13.
  • a common drive is provided in this embodiment for both of the carriages 19 and 20.
  • This drive which is shown in more detail in FIG. 4, utilizes an elongated flexible element 23 which forms a closed loop and in H0. 4 is a cord. However, it could also be a tape, a belt or a toothed belt.
  • the carriages 19 and are secured to the element 23 which is trained about two rollers 24 and located at opposite lateral sides of the record carrier 13 so that the element 23 forms two runs, with the carriage 19 being secured to the element 23 at one run thereof and the carriage 20 at the other run.
  • the roller 25 is driven by a diagram matically illustrated known step motor 26.
  • step motor 26 Of course.
  • the drive is such that when the carriages 19 and 20 reach the end position shown in FIG. 4 the direction of the drive is reversed until the positions of the carriages 19 and 20 are reversed from those shown in FIG. 4. Then, the drive is again reversed.
  • the roller 25 is configurated as a threaded spindle and the element 23 has two free ends one of which is secured to the spindle in the region of one end thereof, and the other of which is secured to the spindle in the region of the other end thereof. as shown.
  • the roller 25 is rotated by the step motor 26, the element 23 whose end portions are located in the threads of the roller 25, is wound onto the roller 25 at one end thereof and at the same time wound off the rol ler 25 at the opposite end thereof. This is reversed when the rotational direction of the roller is reversed. With such a construction any slip of the element 23 with reference to the rollers 24 and 25 is positively prevented.
  • reference numeral 27 designates a further roller, a so-called counterclectrode, which presses the carrier 13 against the roller 14 and also serves to complete the electrical circuit through the electrodes of the units 20 and 21 (the electrodes are diagrammatically shown in FIG. 3) and from the record carrier 13.
  • FIGS. 1 and 2 there is shown a starting position in which the unit 21 is located at the left-hand side, that is at the beginning of a line to be scribed. At this time the unit 22 is at the righthand side, that is at the end of an as yet unseribed line.
  • the units 21 and 22 are each mounted on an arm 28 which is pivotably secured to the respective carriages 19 and 20.
  • a pair of tension springs 29 is provided, each of which is connected with the respective arm 18 and the associated carriage 19 or 20.
  • the arms 28 are pivoted by the springs 29 in a sense requisite for urging the writing electrodes of the units 21 and 22 against the surface of the carrier 13.
  • each of the two carriages 19 and 20 is provided with a bolt-shaped member.
  • These members are identified with reference numerals 30 and 3011, respectively, and are so mounted on the carriages 19 and 20 that they can be shifted in the direction of movement ofthe carriages and opposite thereto.
  • Each of the members 30 and 30a is provided with an essentially sawtooth-shaped kcrf31 and cooperates with a respective second bolt-shaped member 32 and 32a, respectively.
  • both ofthe carriages 19 and 20 are moved in unison but in mutually opposite directions.
  • the carriage 19 and the unit 21 are moved from left to right and the unit 2] will scribe the first line of indicia during such movement.
  • the second carriage 20 and its associated head 22 are moved front the right to the left, to the beginning of the second yetto-be-scribed line.
  • the carriage 21] reaches the left-hand position, its bolt 301: contacts the abutment 33 and is therefore displaced towards the right so that the member 32a can enter into the kerf 31 again and the unit 22 is urged back against the record carrier 13 under the influence of the associated spring.
  • the second scribing unit 22 is immediately ready to start scribing the second line, during which step the first scribing unit 21 is returned towards the left-hand starting position shown in FIGS. 1 and 2.
  • the carrier 13 is advanced longitudinally by a distance corresponding to two lines, with the aid of a further step motor which is not illustrated but is entirely conventional.
  • the scribing units 21 and 22 may each be provided with a plurality of scribing electrodes, e.g., five rows of seven electrodes or seven rows of live electrodes, so that each unit can form a grid of thirty-five dots. Of course only selected ones of the electrodes will be energized to form the configuration ofa particular indicium which is to be inscribed. This is entirely conventional, as is the construction of the record carrier 13 which has a thin metal coating and which is burned away in the form of dots to form the respective indicium.
  • a coding disk 35 is mounted on the shaft of the step motor 26 and determines via a light-beam arrangement the energization of the electrodes for the particular to be scribed. It is not novel and forms no part of the invention per se. Current for the electrodes of the units 21 and 22 is supplied via respective ribbon cables 36 which in the illustrated embodiment would have seven conductors, corresponding to the rows of electrodes.
  • a combination comprising two scribing units; means mounting said scribing units so that one of said scribing units is permanently spaced from the other one in said longitudinal direction of record carrier by a distance corresponding to the spacing between two consecutive lines of indicia to be produced, said mounting means being elongated and extending transversely of the record carrier and parallel to the major surface thereof, said scribing units being mounted on said mounting means for displacement longitudinally thereof between a first end position adjacent one of the edges of the record carrier and a second end position adjacent the other edge; drive means for displacing one of said scribing units between said first and second end positions thereof and for simultaneously displacing the other scribing unit between said second and first end positions thereofi and vice versa, while said scribing units are always spaced by said distance in said longitudinal direction
  • said drive means comprises a drive arrangement common to said units and operative for moving the same in unison 3.
  • said mounting means comprises at least two guide rails; and wherein each of said carriages is mounted on a different one of said guide rails.
  • said drive means comprises a pair of rollers mounted adjacent the respective edges, and an elongated flexible drive clement trained about said rollers and forming a closed loop, said units being connected to said drive element.
  • one of said rollers is provided with a thread
  • said drive element further comprising a rope trained about said one roller so as to enter into said thread
  • said drive means further comprises a step motor connected with said one roller for driving the same in rotation.
  • said units each comprise a member which is slidablc between two positions in which it effects movement of said unit into and out of contact with said carrier; and wherein said control means comprises abutments provided in the regions of said edges and operative for engaging and sliding the respective member from one to the other of said positions.

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  • Printers Characterized By Their Purpose (AREA)
  • Combination Of More Than One Step In Electrophotography (AREA)
  • Fax Reproducing Arrangements (AREA)
  • Handling Of Sheets (AREA)
  • Character Spaces And Line Spaces In Printers (AREA)
US359559A 1972-05-31 1973-05-11 Line-writing apparatus with plural print heads in parallel rows Expired - Lifetime US3874492A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2226394A DE2226394C3 (de) 1972-05-31 1972-05-31 Schnelldrucker

Publications (1)

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US3874492A true US3874492A (en) 1975-04-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
US359559A Expired - Lifetime US3874492A (en) 1972-05-31 1973-05-11 Line-writing apparatus with plural print heads in parallel rows

Country Status (10)

Country Link
US (1) US3874492A (de)
JP (1) JPS5547982B2 (de)
AT (1) AT327241B (de)
CH (1) CH551049A (de)
DE (1) DE2226394C3 (de)
FR (1) FR2186894A5 (de)
GB (1) GB1390893A (de)
IT (1) IT988865B (de)
NL (1) NL7307570A (de)
SE (1) SE380375B (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4134696A (en) * 1975-12-05 1979-01-16 Canon Kabushiki Kaisha Printing apparatus
US4481880A (en) * 1980-10-06 1984-11-13 Hitachi Koki Company Limited Dot printer
EP0127145A1 (de) * 1983-05-26 1984-12-05 Litton Systems, Inc Doppelkopf-Dreistationendrucker
US4513661A (en) * 1981-05-01 1985-04-30 Trilog, Inc. Dot matrix line printer
EP0145025A2 (de) * 1983-12-14 1985-06-19 Oki Electric Industry Company, Limited Seriendrucker mit mehreren Schreibköpfen
US4527918A (en) * 1982-05-10 1985-07-09 Brother Kogyo Kabushiki Kaisha Apparatus for both printing characters and plotting graphs
EP0359580A1 (de) * 1988-09-16 1990-03-21 Ncr International Inc. Drucker
US6715947B1 (en) 2001-06-08 2004-04-06 Tally Printer Corporation Low rotational inertia shuttle system with a flattened sinusoidal carriage velocity
US7249049B1 (en) 2000-06-21 2007-07-24 Rapt, Inc. Method and business process for the estimation of mean production for assemble-to-order manufacturing operations

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4239403A (en) * 1979-01-30 1980-12-16 Printronix, Inc. Counterbalanced bidirectional shuttle drive
JPS5712666A (en) * 1980-06-27 1982-01-22 Oki Electric Ind Co Ltd Dot-line printer
EP0059556A3 (de) * 1981-02-26 1984-01-18 Sinclair Research Limited Gerät zum Drucken
JPS5941284A (ja) * 1982-09-02 1984-03-07 Alps Electric Co Ltd 記録装置
US4576490A (en) * 1983-12-14 1986-03-18 Oki Electric Industry Co., Ltd. Multihead serial printer
JPS60127173A (ja) * 1983-12-14 1985-07-06 Oki Electric Ind Co Ltd マルチヘツドシリアルプリンタ
US4668961A (en) * 1984-04-20 1987-05-26 Canon Kabushiki Kaisha Recording apparatus
JPH03138161A (ja) * 1989-10-25 1991-06-12 Mutoh Ind Ltd サーマル記録装置
US5428375A (en) * 1992-05-29 1995-06-27 Simon; Robert J. Multiple print head ink jet printer
US5456539A (en) * 1993-05-25 1995-10-10 Duplex Printer, Inc. Printer with dual opposing printheads

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2578771A (en) * 1948-10-28 1951-12-18 Zint George Typewriter for writing continuously in opposite directions
US3167166A (en) * 1960-04-07 1965-01-26 Int Standard Electric Corp Printing arrangement for high-speed teleprinters
US3236351A (en) * 1961-12-05 1966-02-22 Ibm High speed matrix printer
US3541956A (en) * 1966-07-29 1970-11-24 Olivetti General Electric Spa Apparatus for selectively perforating a web and printing therefrom
US3708050A (en) * 1970-10-26 1973-01-02 Ibm Printer control with monodirectional and bidirectional printing compatibility

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2578771A (en) * 1948-10-28 1951-12-18 Zint George Typewriter for writing continuously in opposite directions
US3167166A (en) * 1960-04-07 1965-01-26 Int Standard Electric Corp Printing arrangement for high-speed teleprinters
US3236351A (en) * 1961-12-05 1966-02-22 Ibm High speed matrix printer
US3541956A (en) * 1966-07-29 1970-11-24 Olivetti General Electric Spa Apparatus for selectively perforating a web and printing therefrom
US3708050A (en) * 1970-10-26 1973-01-02 Ibm Printer control with monodirectional and bidirectional printing compatibility

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4134696A (en) * 1975-12-05 1979-01-16 Canon Kabushiki Kaisha Printing apparatus
US4481880A (en) * 1980-10-06 1984-11-13 Hitachi Koki Company Limited Dot printer
US4513661A (en) * 1981-05-01 1985-04-30 Trilog, Inc. Dot matrix line printer
US4527918A (en) * 1982-05-10 1985-07-09 Brother Kogyo Kabushiki Kaisha Apparatus for both printing characters and plotting graphs
EP0127145A1 (de) * 1983-05-26 1984-12-05 Litton Systems, Inc Doppelkopf-Dreistationendrucker
EP0145025A2 (de) * 1983-12-14 1985-06-19 Oki Electric Industry Company, Limited Seriendrucker mit mehreren Schreibköpfen
EP0145025A3 (en) * 1983-12-14 1987-08-12 Oki Electric Industry Company, Limited Multihead serial printer
EP0359580A1 (de) * 1988-09-16 1990-03-21 Ncr International Inc. Drucker
US7249049B1 (en) 2000-06-21 2007-07-24 Rapt, Inc. Method and business process for the estimation of mean production for assemble-to-order manufacturing operations
US6715947B1 (en) 2001-06-08 2004-04-06 Tally Printer Corporation Low rotational inertia shuttle system with a flattened sinusoidal carriage velocity

Also Published As

Publication number Publication date
GB1390893A (en) 1975-04-16
NL7307570A (de) 1973-12-04
DE2226394A1 (de) 1973-12-13
CH551049A (de) 1974-06-28
IT988865B (it) 1975-04-30
SE380375B (sv) 1975-11-03
FR2186894A5 (de) 1974-01-11
AT327241B (de) 1976-01-26
ATA471073A (de) 1975-04-15
DE2226394B2 (de) 1980-04-03
JPS5547982B2 (de) 1980-12-03
DE2226394C3 (de) 1980-12-04
JPS4962033A (de) 1974-06-15

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