US3460469A - Print hammer actuator - Google Patents

Print hammer actuator Download PDF

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Publication number
US3460469A
US3460469A US606308A US3460469DA US3460469A US 3460469 A US3460469 A US 3460469A US 606308 A US606308 A US 606308A US 3460469D A US3460469D A US 3460469DA US 3460469 A US3460469 A US 3460469A
Authority
US
United States
Prior art keywords
actuator
magnetic
print
hammer
winding
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
US606308A
Other languages
English (en)
Inventor
Edgar Alan Brown
Albert S Chou
Richard H Darling
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
Application granted granted Critical
Publication of US3460469A publication Critical patent/US3460469A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • 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
    • B41J9/00—Hammer-impression mechanisms
    • B41J9/26—Means for operating hammers to effect impression
    • B41J9/36—Means for operating hammers to effect impression in which mechanical power is applied under electromagnetic control
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/18—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
    • H01F7/1883—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings by steepening leading and trailing edges of magnetisation pulse, e.g. printer drivers

Definitions

  • the motive force for movement of the print hammer to the operative position is provided by the extension of the spring, it is necessary to obtain a high efiiciency in the conversion of the potential energy stored in the spring due to the attraction of magnetic member 14 to kinetic energy in moving the print hammer to the operative position.
  • the efliciency of the conversion of energy depends on the spring being essentially at a high constant stress value and also that the spring has a uniform energy density throughout its length.
  • any mass in the system other than the spring member itself should be kept to a minimum.
  • the ideal case for an efficient transfer of energy is for the spring member to have a radius of curvature and a constant width.
  • a magnetic core structure forming a substantially closed path shaped to form two ofiset pole pieces
  • a print hammer actuator for selectively producing a cycle of operation from a ready position to the operative position and back to the ready position comprising:
  • the electromechanical actuator according to claim 3 further comprising fulcrum means for engaging said actuator member intermediate said one and another points to produce a curvature in said actuator member when in said ready position.
  • the electromechanical actuator according to claim 12 further comprising means for adjusting said fulcrum means relative to said actuator member for adjusting the curvature of said actuator member in said ready position.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Impact Printers (AREA)
  • Electromagnets (AREA)
US606308A 1966-12-30 1966-12-30 Print hammer actuator Expired - Lifetime US3460469A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US60630866A 1966-12-30 1966-12-30

Publications (1)

Publication Number Publication Date
US3460469A true US3460469A (en) 1969-08-12

Family

ID=24427447

Family Applications (1)

Application Number Title Priority Date Filing Date
US606308A Expired - Lifetime US3460469A (en) 1966-12-30 1966-12-30 Print hammer actuator

Country Status (5)

Country Link
US (1) US3460469A (enrdf_load_stackoverflow)
JP (1) JPS4812344B1 (enrdf_load_stackoverflow)
AT (1) AT278406B (enrdf_load_stackoverflow)
ES (1) ES348719A1 (enrdf_load_stackoverflow)
NL (1) NL142801B (enrdf_load_stackoverflow)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3592311A (en) * 1968-10-02 1971-07-13 Ibm Wire printing head
US3643595A (en) * 1969-06-25 1972-02-22 Data Products Corp Printer hammer bank assembly
US3672482A (en) * 1970-08-31 1972-06-27 Ibm Wire matrix print head
US3707122A (en) * 1970-07-13 1972-12-26 Peripheral Dynamics Print hammer mechanism with magnetic reinforcement to cath hammer
US3748613A (en) * 1971-09-17 1973-07-24 Honeywell Bull Soc Ind Print device for a printer
US3834303A (en) * 1973-02-16 1974-09-10 Pertec Corp High speed line printing apparatus
US3982622A (en) * 1974-10-04 1976-09-28 Teletype Corporation Actuator mechanisms for wire matrix printers
US4046244A (en) * 1975-08-06 1977-09-06 Sycor, Inc. Impact matrix print head solenoid assembly
DE2920732A1 (de) * 1978-06-02 1979-12-06 Printronix Inc Druckhammermechanismus fuer einen punktmatrix-drucker
US4189997A (en) * 1976-01-16 1980-02-26 Canon Kabushiki Kaisha Printer
DE3328065A1 (de) * 1982-08-06 1984-02-09 Printronix, Inc., 92713 Irvine, Calif. Druckhammervorrichtung
US4582437A (en) * 1983-10-07 1986-04-15 Centronics Data Computer Corp. Print pin actuator and method of making same

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5239638U (enrdf_load_stackoverflow) * 1975-09-12 1977-03-19

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2687088A (en) * 1948-08-30 1954-08-24 Durant Mfg Co Printing recording counter
US2928896A (en) * 1955-08-25 1960-03-15 Dirks Gerhard High speed printing devices
US2940385A (en) * 1957-04-01 1960-06-14 Anelex Corp High speed printer
US2976801A (en) * 1948-10-01 1961-03-28 Dirks Gerhard Printing and other representation of characters
US3021454A (en) * 1958-04-11 1962-02-13 Bendix Corp Control circuit for electromagnetic devices
US3049990A (en) * 1960-12-20 1962-08-21 Ibm Print hammer actuator
US3126823A (en) * 1962-05-24 1964-03-31 benson
US3172352A (en) * 1963-05-13 1965-03-09 Data Products Corp Printing hammer assembly
US3223029A (en) * 1962-11-13 1965-12-14 Rca Corp Information translating apparatus
US3359921A (en) * 1964-07-25 1967-12-26 Ibm Print hammer unit for high speed printers

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2687088A (en) * 1948-08-30 1954-08-24 Durant Mfg Co Printing recording counter
US2976801A (en) * 1948-10-01 1961-03-28 Dirks Gerhard Printing and other representation of characters
US2928896A (en) * 1955-08-25 1960-03-15 Dirks Gerhard High speed printing devices
US2940385A (en) * 1957-04-01 1960-06-14 Anelex Corp High speed printer
US3021454A (en) * 1958-04-11 1962-02-13 Bendix Corp Control circuit for electromagnetic devices
US3049990A (en) * 1960-12-20 1962-08-21 Ibm Print hammer actuator
US3126823A (en) * 1962-05-24 1964-03-31 benson
US3223029A (en) * 1962-11-13 1965-12-14 Rca Corp Information translating apparatus
US3172352A (en) * 1963-05-13 1965-03-09 Data Products Corp Printing hammer assembly
US3359921A (en) * 1964-07-25 1967-12-26 Ibm Print hammer unit for high speed printers

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3592311A (en) * 1968-10-02 1971-07-13 Ibm Wire printing head
US3643595A (en) * 1969-06-25 1972-02-22 Data Products Corp Printer hammer bank assembly
US3707122A (en) * 1970-07-13 1972-12-26 Peripheral Dynamics Print hammer mechanism with magnetic reinforcement to cath hammer
US3672482A (en) * 1970-08-31 1972-06-27 Ibm Wire matrix print head
US3748613A (en) * 1971-09-17 1973-07-24 Honeywell Bull Soc Ind Print device for a printer
US3834303A (en) * 1973-02-16 1974-09-10 Pertec Corp High speed line printing apparatus
US3982622A (en) * 1974-10-04 1976-09-28 Teletype Corporation Actuator mechanisms for wire matrix printers
US4046244A (en) * 1975-08-06 1977-09-06 Sycor, Inc. Impact matrix print head solenoid assembly
US4189997A (en) * 1976-01-16 1980-02-26 Canon Kabushiki Kaisha Printer
DE2920732A1 (de) * 1978-06-02 1979-12-06 Printronix Inc Druckhammermechanismus fuer einen punktmatrix-drucker
DE3328065A1 (de) * 1982-08-06 1984-02-09 Printronix, Inc., 92713 Irvine, Calif. Druckhammervorrichtung
US4582437A (en) * 1983-10-07 1986-04-15 Centronics Data Computer Corp. Print pin actuator and method of making same

Also Published As

Publication number Publication date
ES348719A1 (es) 1969-03-16
JPS4812344B1 (enrdf_load_stackoverflow) 1973-04-19
AT278406B (de) 1970-01-26
NL142801B (nl) 1974-07-15
NL6717202A (enrdf_load_stackoverflow) 1968-07-01

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