US3915279A - Printer type element deflection limiter - Google Patents

Printer type element deflection limiter Download PDF

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Publication number
US3915279A
US3915279A US420045A US42004573A US3915279A US 3915279 A US3915279 A US 3915279A US 420045 A US420045 A US 420045A US 42004573 A US42004573 A US 42004573A US 3915279 A US3915279 A US 3915279A
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US
United States
Prior art keywords
type
finger members
document
adjacent
members
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
US420045A
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English (en)
Inventor
Guenter H Schacht
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.)
IBM Information Products 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
Priority to US420045A priority Critical patent/US3915279A/en
Priority to IT27458/74A priority patent/IT1022103B/it
Priority to FR7434704A priority patent/FR2252923B1/fr
Priority to GB4497274A priority patent/GB1462988A/en
Priority to JP11951574A priority patent/JPS5322488B2/ja
Priority to CA212,295A priority patent/CA1014503A/en
Priority to CH1553574A priority patent/CH575834A5/xx
Priority to DE2455831A priority patent/DE2455831C3/de
Application granted granted Critical
Publication of US3915279A publication Critical patent/US3915279A/en
Assigned to MORGAN BANK reassignment MORGAN BANK SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: IBM INFORMATION PRODUCTS CORPORATION
Assigned to IBM INFORMATION PRODUCTS CORPORATION, 55 RAILROAD AVENUE, GREENWICH, CT 06830 A CORP OF DE reassignment IBM INFORMATION PRODUCTS CORPORATION, 55 RAILROAD AVENUE, GREENWICH, CT 06830 A CORP OF DE ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: INTERNATIONAL BUSINESS MACHINES CORPORATION
Anticipated expiration legal-status Critical
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
    • B41J1/22—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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S400/00—Typewriting machines
    • Y10S400/901—Continuously rotating type-head

Definitions

  • ABSTRACT high-speed rotary serial printer includes a s e .m mY a MN S an no lam u BA m, nm .w mm p er m0 .lC e n .W 8 S A M U A relatively continuously rotating circular disk with a plurality of resilient type carrying finger members flexible in both [22] Filed: Nov. 29, 1973 [21] Appl. No.: 420,045
  • tuated finger member in the lateral direction is controllably limited by the sleeve element attached 197/ 18 12 thereto butting against the sleeve element on the next 101/1 1 l or ad acent sleeve element.
  • This invention relates to on-the-fly rotating print disk printers and, more particularly, to the means for controlling the stresses to the type carrying finger members of the disk during a character printing operation.
  • Printing devices comprising a continuously rotating disk having a plurality of flexible type carrying segments and a hammer for causing individual segments to move into contact with a document on a platen are well known in the art.
  • Control means are provided for actuating the hammer at the proper distance relative to the constantly rotating disk so that the preselected character is printed.
  • the type finger members are flexible in the impacting direction and more rigid in the moving direction. The rigidity in the moving direction is needed for print registration and protection during paper jams.
  • the type carrying disk of the printer apparatus has a plurality of axially and laterally flexible spaced apart radial type finger members with type character elements on one face of the outermost end and adjacent the document.
  • a plastic sleeve element is affixed to each of the radial finger members adjacent the type character element and provides a space between adjacent members to permit a limited deflection in the lateral direction on each occasion that the print hammer strikes the character element to effect a print operation.
  • Another object of the invention is to minimize the fatigue characteristics of the type carrying finger members due to stresses applied thereto during character printing operations.
  • Another important object of this invention is to provide sleeve elements to each of the type carrying finger members which function to provide limited deflection 0f the finger members during character printing operations.
  • FIG. 1 is an isometric view showing a continuously rotatable printer disk and partial platen apparatus emboding the type element deflection limiter devices of the present invention.
  • FIG. 2 is a partial cross-sectional view showing a type finger member with a deflection limiter device attached thereto.
  • FIG. 3 is a schematic partial plan view of the rotatable type carrying disk assembly and illustrating the operation characteristics of the deflection limiter devices.
  • FIG. 4 is a schematic elevational view of an in-line serial printer type carrier element utilizing the deflection limiter devices of the present invention.
  • the reference number 10 denotes generally a printing head having a printer apparatus for rotatably supporting a print disk or wheel 11 and for moving it across the face of document 12, which is backed by a cylindrical print platen 13 for performing a printing operation on the document 12 in conjunction with a print hammer l4 operated by a solenoid 15 to impact type elements of the print wheel 11 against the document 12 for effecting a printing operation.
  • the printer type wheel assembly of the present invention forms a part of the printer apparatus of the abovereferenced cross related application. If a more detailed explanation of the printer apparatus is desired reference may be had to the cited cross reference.
  • the printwheel assembly comprises a resilient print disk 11 of elastic flexible material (for example, steel) and having radial slots 18 defining a plurality of radial finger members 19 with type character elements 20 attached on one face at the outermost end and adjacent the document 12.
  • the print wheel assembly includes a hub 21 adapted to fit on a rotatable shaft 22 and be affixed thereto.
  • the print disk assembly is designed to be continuously rotated at a relatively high velocity..
  • the type velocity is approximately 300 inches per second with a contact time in the order of 5 to 30 microseconds.
  • the velocity and print pressure conditions experienced result in a momentary stopping of the preselected finger member 19 which in turn stresses that finger member in the vicinity of the hub.
  • the frequency of the printing operations causes a fatigue condition to develop in the type carrier finger members with an eventual breaking of the fatigued finger members 19 from the printer disk 11.
  • a plastic sleeve element 23 generally rectangular in shape, to each of the radial finger members 19 and near or adjacent to the type character end and providing a spacing between adjacent sleeve elements 23 to permit a controlled and limited deflection in the lateral or disk movement direction on each occasion that the print hammer l4 strikes the character area to effect a print operation.
  • a predetermined air gap exists between the sleeve elements 23 attached to adjacent finger members 19.
  • an amount of deflection in a lateral direction is permitted by the air gap.
  • the adjacent sleeve elements 23 butt up together (see FIG. 3) and the adjacent finger members 19 function to support each other. Consequently, the stresses are now controllable while printing.
  • a disk 11 appears as a substantially solid disk as the adjacent finger members 19 with the sleeve elements 23 attached thereto butt up to each other, thus preventing the finger members from destruction.
  • FIG. 4 there is shown an alternative embodiment for a print device 30 wherein the print element is a linear element having parallel slots 31 defining a plurality of parallel finger members 32 having type slugs 33 mounted at the ends thereof.
  • the plastic sleeve devices 34 are attached to the finger members 32 in the vicinity of the type slugs 33.
  • this type of linear print element is used in an on-the-fly printer arrangement, limited deflection is provided for the finger members 32.
  • the present invention provides an improved printer disk or printer element particularly adapted for on-the-fly serial type printers.
  • the use of deflection limiter devices greatly extends the life of the printer disk with little or no deterioration in the quality of the printing.
  • printing apparatus having a print carrier support movable across the front of a document and including a resilient and movable type carrying element, said type carrying element having a plurality of flexible spaced apart type finger members with type character elements on one face at the outermost end and adjacent the document, and a print hammer operable to impact a type finger of said type carrying element to drive it against the document and effect a character printing upon the document, the improvement comprising:
  • the type carrying element is a rotatable disk having a plurality of axially and laterally flexible spaced apart radial type finger members and said means affixed to each of said radial type fingers is a plastic sleeve element.
  • the type carrying element is a linearly movable member having a plurality of elongated orthogonally flexible spaced apart parallel type finger members which are flexible in directions perpendicular to the longitudinal axes of said finger members, and said means affixed to each of said finger members is a sleeve element of plastic material.

Landscapes

  • Printing Methods (AREA)
  • Character Spaces And Line Spaces In Printers (AREA)
  • Handling Of Sheets (AREA)
US420045A 1973-11-29 1973-11-29 Printer type element deflection limiter Expired - Lifetime US3915279A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US420045A US3915279A (en) 1973-11-29 1973-11-29 Printer type element deflection limiter
IT27458/74A IT1022103B (it) 1973-11-29 1974-09-19 Stampatrice veloce perfezionata
FR7434704A FR2252923B1 (enrdf_load_stackoverflow) 1973-11-29 1974-10-09
GB4497274A GB1462988A (en) 1973-11-29 1974-10-17 Print element assembly for an on-the-fly printer
JP11951574A JPS5322488B2 (enrdf_load_stackoverflow) 1973-11-29 1974-10-18
CA212,295A CA1014503A (en) 1973-11-29 1974-10-25 Printer type element deflection limiter
CH1553574A CH575834A5 (enrdf_load_stackoverflow) 1973-11-29 1974-11-21
DE2455831A DE2455831C3 (de) 1973-11-29 1974-11-26 Druckeinrichtung mit einer rotierenden Typenscheibe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US420045A US3915279A (en) 1973-11-29 1973-11-29 Printer type element deflection limiter

Publications (1)

Publication Number Publication Date
US3915279A true US3915279A (en) 1975-10-28

Family

ID=23664850

Family Applications (1)

Application Number Title Priority Date Filing Date
US420045A Expired - Lifetime US3915279A (en) 1973-11-29 1973-11-29 Printer type element deflection limiter

Country Status (8)

Country Link
US (1) US3915279A (enrdf_load_stackoverflow)
JP (1) JPS5322488B2 (enrdf_load_stackoverflow)
CA (1) CA1014503A (enrdf_load_stackoverflow)
CH (1) CH575834A5 (enrdf_load_stackoverflow)
DE (1) DE2455831C3 (enrdf_load_stackoverflow)
FR (1) FR2252923B1 (enrdf_load_stackoverflow)
GB (1) GB1462988A (enrdf_load_stackoverflow)
IT (1) IT1022103B (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD245286S (en) 1975-08-22 1977-08-02 Xerox Corporation Print wheel hammer
WO1985003034A1 (en) * 1984-01-16 1985-07-18 Roy Jeremy Lahr Rotary print element, components thereof and drive coupling apparatus therefor

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5341120U (enrdf_load_stackoverflow) * 1976-09-10 1978-04-10
DE2822313C2 (de) * 1978-05-22 1985-07-04 Olympia Werke Ag, 2940 Wilhelmshaven Typenradkassette für Schreib- oder ähnliche Büromaschinen

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3355001A (en) * 1966-05-16 1967-11-28 Ibm Serial on-the-fly printer using a pair of sequential type member guides
US3638565A (en) * 1969-04-29 1972-02-01 Ibm Print type carrier
US3724371A (en) * 1970-09-15 1973-04-03 Honeywell Bull Soc Ind Process for manufacturing a type-carrying printing belt
US3747522A (en) * 1970-10-20 1973-07-24 Honeywell Bull Soc Ind Endless type carrier with type fingers connected by an endless strip and interposed viscous damping blocks
US3760719A (en) * 1970-11-10 1973-09-25 Honeywell Bull Type-holder element for {37 on-the-fly{38 {11 printing machine
US3805941A (en) * 1969-06-28 1974-04-23 Honeywell Inf Systems Ballistic print hammer and type-bearing element combination for on-the-fly printer

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3442365A (en) * 1967-09-29 1969-05-06 Friden Inc Font wheel aligning device
FR1597830A (enrdf_load_stackoverflow) * 1968-01-29 1970-06-29
US3613856A (en) * 1968-12-27 1971-10-19 Ibm Antiwear shield for continuously rotatable-type disc printer
US3760715A (en) * 1971-12-20 1973-09-25 J Grote Machine for slicing sausage and applying the slices to pizza in a predetermined pattern
FR2186891A5 (enrdf_load_stackoverflow) * 1972-06-02 1974-01-11 Ibm

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3355001A (en) * 1966-05-16 1967-11-28 Ibm Serial on-the-fly printer using a pair of sequential type member guides
US3638565A (en) * 1969-04-29 1972-02-01 Ibm Print type carrier
US3805941A (en) * 1969-06-28 1974-04-23 Honeywell Inf Systems Ballistic print hammer and type-bearing element combination for on-the-fly printer
US3724371A (en) * 1970-09-15 1973-04-03 Honeywell Bull Soc Ind Process for manufacturing a type-carrying printing belt
US3747522A (en) * 1970-10-20 1973-07-24 Honeywell Bull Soc Ind Endless type carrier with type fingers connected by an endless strip and interposed viscous damping blocks
US3760719A (en) * 1970-11-10 1973-09-25 Honeywell Bull Type-holder element for {37 on-the-fly{38 {11 printing machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD245286S (en) 1975-08-22 1977-08-02 Xerox Corporation Print wheel hammer
WO1985003034A1 (en) * 1984-01-16 1985-07-18 Roy Jeremy Lahr Rotary print element, components thereof and drive coupling apparatus therefor

Also Published As

Publication number Publication date
DE2455831C3 (de) 1981-05-07
FR2252923A1 (enrdf_load_stackoverflow) 1975-06-27
JPS5322488B2 (enrdf_load_stackoverflow) 1978-07-08
GB1462988A (en) 1977-01-26
FR2252923B1 (enrdf_load_stackoverflow) 1980-04-11
DE2455831A1 (de) 1975-06-12
DE2455831B2 (de) 1980-05-29
JPS5085420A (enrdf_load_stackoverflow) 1975-07-10
CH575834A5 (enrdf_load_stackoverflow) 1976-05-31
IT1022103B (it) 1978-03-20
CA1014503A (en) 1977-07-26

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Date Code Title Description
AS Assignment

Owner name: IBM INFORMATION PRODUCTS CORPORATION, 55 RAILROAD

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:INTERNATIONAL BUSINESS MACHINES CORPORATION;REEL/FRAME:005678/0098

Effective date: 19910326

Owner name: MORGAN BANK

Free format text: SECURITY INTEREST;ASSIGNOR:IBM INFORMATION PRODUCTS CORPORATION;REEL/FRAME:005678/0062

Effective date: 19910327