US3724371A - Process for manufacturing a type-carrying printing belt - Google Patents

Process for manufacturing a type-carrying printing belt Download PDF

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Publication number
US3724371A
US3724371A US00178663A US3724371DA US3724371A US 3724371 A US3724371 A US 3724371A US 00178663 A US00178663 A US 00178663A US 3724371D A US3724371D A US 3724371DA US 3724371 A US3724371 A US 3724371A
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US
United States
Prior art keywords
belt
type
belts
tongues
slots
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
US00178663A
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English (en)
Inventor
M Picard
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.)
Bull SA
Original Assignee
Societe Industrielle Honeywell Bull
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 Societe Industrielle Honeywell Bull filed Critical Societe Industrielle Honeywell Bull
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Publication of US3724371A publication Critical patent/US3724371A/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
    • B41J1/00—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies
    • B41J1/04—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies with types or dies carried upon levers or radial arms, e.g. manually operated
    • 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

  • ABSTRACT A process for fabricating an endless type-carrying belt for an on-the-fly printer, wherein open belt portions are first prepared with type-carrying tongue portions defined along the length thereof, each of said tongue portions bearing a stud wherein a raised character is formed in each stud by coining by rolling, and wherein said open belt portions have the ends thereof joined together to form an endless belt.
  • the raised type characters each carried by a respective tongue alongside of one edge of the belt, be positioned with a high degree of precision in relation to a series of reference holes aligned parallel to and near the other edge of the belt.
  • a high degree of dimensional precision of the entire type-carrying belt is essential in view of its interchangeability, on one hand, and for proper operation of the printer, on the other hand.
  • the instant invention provides a process for fabricating an endless metallic type-carrying belt intended for use with an on-the-fly printer, such belt having a plurality of parallel elongated tongues along one of its edges, each tongue being provided with a printing type character in relief.
  • the first phase of operations (a) when starting with a metal belt of thickness corresponding to that of the planned studs, the first phase of operations (a) consists of profiling the belt, either by mechanical removal or by chemical or electrolytic machining until the desired general thickness is obtained, followed by cuttingpunching the slots, the return holes and the reference holes by indexing on a reference pitch.
  • the first phase of operations (a) consists of cutting-punching the primitive slots, the return holes and the reference holes in the belt(s) by indexing on a reference pitch, and the electrical welding to the belt, preferably by diffusion, of the studs, one stud on each portion of the belt subsisting between adjacent slots.
  • FIGS. 2A and 2B are transverse cross-sectional views of a rough-shaped belt obtained in a first phase of operations in accordance with respective first and second versions;
  • FIGS. 3A and 3B are elevational views of the portions of the belt having slots and holes corresponding to the respective first and second versions of FIGS. 2A and 2B;
  • FIG. 5 is an elevational view of a portion of the belt after cutting out of the slots defining the outlines of the type-carrying tongues
  • FIGS. 6A and 6B are transverse cross-sectional views of a damping strip of known type in accordance with respective first and second variations.
  • FIG. 1 illustrates that type-carrying belt is preferably comprised of two half-belts 10-1 and 10-2, which clearly entails the presence of two seams l4 and 15, each seam being disposed on the axis of a slot separating two adjacent tongues 13.
  • Belt 10 is provided towards its lower edge with reference holes 16, each of holes 16 being exactly aligned with the axis of a slot separating two adjacent type-carrying tongues 13. Holes 16 serve, in known manner, to synchronize the strikings during printing.
  • belts 17 are prepared with a slightly greater length than indicated previously herein, with a width of 70 mm, for example, and a thickness of E2.
  • These belts may be preferably of hardened structural steel, such as that containing essentially, in addition to iron, 18 percent nickel, 8 percent cobalt and 5 percent molybdenum.
  • a first machining is intended to produce a stud 18 of trapezoidal form centered on an axis 19, which is the axis on which the raised printing type characters subsequently will be aligned. This machining which will reduce the greater part of the width of the belt to the thickness El may be effected by grinding or by a known chemical or electrolytic process.
  • the thickness El may be 0.15 mm, for example.
  • Each slot 20 comprises an upper portion having a width which leaves a remaining stud of 1.35 mm width and a lower portion of lesser width.
  • Each hole 21 coincides with the lower part of a completed slot, such as shown in FIG. 5.
  • Holes 21 and 16 have respective diameters 1.95 mm and 1.5 mm, for example.
  • studs 23 are attached to the cutout belts 22 by electrical welding on a special tool and machine.
  • the recommended welding process is that termed by diffusion. This process differs from welding by the common Joule effect in that the pressure applied by the electrodes on the pieces to be welded is greater and the current intensity passing through the pieces is less, although the time during which current flows is longer.
  • the welding electrodes may be coiled by circulation of water and, if it is desired to provide rapid welding, the pieces to be welded can be immersed in cold water.
  • the next operation (b) is directed to providing the raised type characters on the two half-belts as shown by FIG. 4.
  • the tools to be employed include a matrix in the form of a cylindrical drum on the periphery of which are impressions corresponding to a set of characters or symbols, which are engraved intaglio.
  • One strip bearing the rough-shaped studs (in accordance with FIGS. 3A or 3B) is placed between this matrix and a horizontal bed, which may be driven with a reciprocating movement.
  • the belt is positioned precisely on the bed.
  • the matrix turning on a horizontal axis, is urged with a very great force against the belt and turns to follow the belt as it is alternately displaced alongits entire length.
  • the form of primitive slots 20 since all of the belt has been reduced to the thickness E1 of 0.15 mm with the exception of the type characters in relief. It is to be noted that the thickness E2 is, for example 0.7 mm (FIGS. 2A and 28).
  • the next operation (c) consists of cutting each halfbelt to exact length by any suitable procedure.
  • a halfhole 21 must be found at each end, and the length is 750.72 mm, as described above.
  • the operation (d) is for forming an endless belt by welding end-to-end the two ends of the two half-belts.
  • This welding is performed preferably by microplasma, a known process of arc welding with wellregulated current, which results in a very good welded seam without deformation of the welded pieces.
  • the operation (e) consists of cutting out with a press the final slots 25 between the type-carrying tongues,
  • the two preceding operations may be executed in the described order or in reverse order.
  • the final necessary operation (f) is the separation of the upper strip 26.
  • This separation is effected by shearing with any suitable tool at the level 27 that corresponds to the upper part of the above-mentioned rectangular portions of the type-carrying tongues.
  • this thermal treatment consists of heating in a neutral atmosphere to 480 C for 3 hours, which causes virtually no deformation of the type-carrying belt.
  • Strip 28 of rectangular cross-section, is shown in FIG. 5 by broken lines. Strip 28 may be positioned a few millimeters below the level 19 of the type characters.
  • Strip 28-1 may be attached by molding, as for example strip 28-1 shown in FIG. 6A.
  • Strip 28-1 may be composed of an elastomer, of the synthetic rubber type, or of a polyurethane.
  • Strip 28-1 may consist of two continuous portions which can be of different thickness on both sides of tongues l3.
  • step (a) comprises cuttingpunching said slots of primitive form, said return holes, and said reference holes into said belts, and electrically welding said studs to said belts by diffusion, one stud to each portion of said belt subsisting between adjacent slots.
  • each of said belts is subjected to a thermal treatment in neutral atmosphere for reducing the structural hardness of said belts, and a bombardment with jets of glass micro-balls for increasing the surface hardness of said belts.
  • each of said belts is subjected to a thermal treatment in neutral atmosphere for reducing the structural hardness of said belts, and a bombardment with jets of glass micro-balls for increasing the surface hardness of said belts.
  • each end of said belt portion is welded to another end to form an endless belt.

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  • Laminated Bodies (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Belt Conveyors (AREA)
US00178663A 1970-09-15 1971-09-08 Process for manufacturing a type-carrying printing belt Expired - Lifetime US3724371A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7033395A FR2105629A5 (de) 1970-09-15 1970-09-15

Publications (1)

Publication Number Publication Date
US3724371A true US3724371A (en) 1973-04-03

Family

ID=9061322

Family Applications (1)

Application Number Title Priority Date Filing Date
US00178663A Expired - Lifetime US3724371A (en) 1970-09-15 1971-09-08 Process for manufacturing a type-carrying printing belt

Country Status (7)

Country Link
US (1) US3724371A (de)
BE (1) BE772558A (de)
CA (1) CA955385A (de)
DE (1) DE2146128A1 (de)
FR (1) FR2105629A5 (de)
GB (1) GB1359559A (de)
NL (1) NL7111658A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3828669A (en) * 1972-09-08 1974-08-13 Ibm Print line registration indicator for type belt
US3915279A (en) * 1973-11-29 1975-10-28 Ibm Printer type element deflection limiter
US20070186588A1 (en) * 2006-02-15 2007-08-16 Uhlmann Pac-Systeme Gmbh & Co. Kg Foil-shaping press

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3041965A (en) * 1958-06-20 1962-07-03 Oki Electric Ind Co Ltd Type members for a high speed printer
US3539752A (en) * 1965-08-12 1970-11-10 Baustahlgewebe Gmbh Fabrication of steel mats
US3575107A (en) * 1969-06-02 1971-04-13 Gen Electric Underspeed and undervoltage protection for printer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3041965A (en) * 1958-06-20 1962-07-03 Oki Electric Ind Co Ltd Type members for a high speed printer
US3539752A (en) * 1965-08-12 1970-11-10 Baustahlgewebe Gmbh Fabrication of steel mats
US3575107A (en) * 1969-06-02 1971-04-13 Gen Electric Underspeed and undervoltage protection for printer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3828669A (en) * 1972-09-08 1974-08-13 Ibm Print line registration indicator for type belt
US3915279A (en) * 1973-11-29 1975-10-28 Ibm Printer type element deflection limiter
US20070186588A1 (en) * 2006-02-15 2007-08-16 Uhlmann Pac-Systeme Gmbh & Co. Kg Foil-shaping press

Also Published As

Publication number Publication date
CA955385A (en) 1974-10-01
BE772558A (fr) 1972-01-17
GB1359559A (en) 1974-07-10
NL7111658A (de) 1972-03-17
FR2105629A5 (de) 1972-04-28
DE2146128A1 (de) 1972-03-16

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