GB1220769A - Printing units - Google Patents

Printing units

Info

Publication number
GB1220769A
GB1220769A GB5370469A GB5370469A GB1220769A GB 1220769 A GB1220769 A GB 1220769A GB 5370469 A GB5370469 A GB 5370469A GB 5370469 A GB5370469 A GB 5370469A GB 1220769 A GB1220769 A GB 1220769A
Authority
GB
United Kingdom
Prior art keywords
needle
printing
spring
holding plate
drive means
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
Application number
GB5370469A
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.)
Philips Electrologica GmbH
Koninklijke Philips NV
Original Assignee
Philips Electrologica GmbH
Philips Electronics NV
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 Philips Electrologica GmbH, Philips Electronics NV filed Critical Philips Electrologica GmbH
Publication of GB1220769A publication Critical patent/GB1220769A/en
Expired legal-status Critical Current

Links

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
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/22—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of impact or pressure on a printing material or impression-transfer material
    • B41J2/23—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of impact or pressure on a printing material or impression-transfer material using print wires
    • B41J2/235—Print head assemblies
    • B41J2/25—Print wires
    • B41J2/255—Arrangement of the print ends of the wires
    • 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
    • B41J2/22—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of impact or pressure on a printing material or impression-transfer material
    • B41J2/23—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of impact or pressure on a printing material or impression-transfer material using print wires
    • B41J2/27—Actuators for print wires
    • B41J2/285—Actuators for print wires of plunger type
    • 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
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1607—Armatures entering the winding

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Impact Printers (AREA)

Abstract

1,220,769. Selective printing. PHILIPS ELECTROLOGICA G.m.b.H. 3 Nov., 1969 [2 Nov., 1968], No. 53704/69. Heading B6F. [Also in Division H1] A selective printer having an array of printing needles is characterized in that magnetic drive means for each needle comprises two magnets, one magnet arranged to move its respective needle against the force of a spring into a non- operational position, the other magnet arranged to move the same needle with the force of the spring into an operational position to effect printing. The moving type carrier of the printer comprises a holding plate (14, Fig. 1) mounted on a carriage 1 for the magnetic drive means 2 and a needle guide head 24 resiliently mounted to the carriage 1 by a pair of leaf springs 23 to allow for a degree of relative movement between the holding plate (14) and the needle guide head 24. The holding plate and the guide head are arranged to be driven along the printing line by separate but synchronous drives comprising band 44 and 25 respectively. This drive system allows the needle guide head to be stopped very accurately and independently of the large inertia of the holding plate (14) carrying the magnetic drive means. Wear of the printing needles is compensated for by moving the holding plate (14) relative to the carriage 1 against the force of a spring 22 with the aid of a cam 19 on a shaft 18 rotated by a knurled knob 20. Electromagnets.-Each electromagnetic drive means (Fig. 3) comprises a housing (34) containing two axially spaced solenoid coils (35a, 35b), yoke parts (36a, 37a) and (36b, 37b) and core parts (38a and 38b). The yoke parts extend into the coils and thus each magnet core is movable only within the space between the two yoke parts. A small diameter brass tube (39) is passed through both solenoid coils and the printing needle 33 is fixed in the tube. The cores (38a and 38b) are fixed to the tube. The cores are cone-shaped, the apices pointing in opposite directions. The tube (39) is mounted in a disc (40) and is fastened at one end to a spring (41). The spring (41) is firmly clamped between the yoke part (36b) and a ring (56).
GB5370469A 1968-11-02 1969-11-03 Printing units Expired GB1220769A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681806714 DE1806714A1 (en) 1968-11-02 1968-11-02 Printing unit for on-the-fly printing of characters

Publications (1)

Publication Number Publication Date
GB1220769A true GB1220769A (en) 1971-01-27

Family

ID=5712237

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5370469A Expired GB1220769A (en) 1968-11-02 1969-11-03 Printing units

Country Status (4)

Country Link
DE (1) DE1806714A1 (en)
FR (1) FR2022487A1 (en)
GB (1) GB1220769A (en)
NL (1) NL6916437A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4871930A (en) * 1971-12-28 1973-09-28
JPS5053124A (en) * 1973-09-12 1975-05-12
JPS5053123A (en) * 1973-09-07 1975-05-12
JPS50149417A (en) * 1974-05-21 1975-11-29
JPS5142613A (en) * 1974-10-07 1976-04-10 Canon Kk KOSOKUINJISORENOIDO
JPS5177416A (en) * 1974-09-27 1976-07-05 Int Standard Electric Corp PURINTA HETSUDO
JPS52101117A (en) * 1976-02-19 1977-08-24 Nippon Electric Co Type hammer machanism for printer
JPS52164910U (en) * 1977-05-16 1977-12-14
JPS5393920A (en) * 1977-01-26 1978-08-17 Hitachi Ltd Typewriter

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA976806A (en) * 1970-05-07 1975-10-28 Herbert E. Manhennett Printer head assembly
DE2119415B2 (en) * 1971-04-21 1975-09-25 Nixdorf Computer Ag, 4790 Paderborn Electromagnetic drive for the needle of a dot matrix printer
FR2300678A1 (en) * 1975-02-13 1976-09-10 Logabax PRINTING DEVICE FOR FAST PRINTERS
DE2713886C2 (en) * 1977-03-29 1983-10-27 Siemens AG, 1000 Berlin und 8000 München Device for guiding the printer needles in a mosaic needle printer
US4167342A (en) * 1977-06-13 1979-09-11 Dataproducts Corporation Control system for matrix print head
US5150976A (en) * 1987-05-08 1992-09-29 Siemens-Nixdorf Informationssysteme Ag Matrix printing head with forward and return articulated-armature magnets
DE4116693C2 (en) * 1990-05-23 1994-09-29 Seikosha Kk printer
DE4317007C2 (en) * 1993-05-17 1995-11-16 Eastman Kodak Co Guide arrangement for the printer carriage in an ink printing device

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4871930A (en) * 1971-12-28 1973-09-28
JPS5053123A (en) * 1973-09-07 1975-05-12
JPS59397B2 (en) * 1973-09-07 1984-01-06 株式会社日立製作所 Print head assembly position adjustment mechanism
JPS5053124A (en) * 1973-09-12 1975-05-12
JPS585786B2 (en) * 1973-09-12 1983-02-01 株式会社日立製作所 Print head assembly position adjustment mechanism
JPS50149417A (en) * 1974-05-21 1975-11-29
JPS5644834B2 (en) * 1974-09-27 1981-10-22
JPS5177416A (en) * 1974-09-27 1976-07-05 Int Standard Electric Corp PURINTA HETSUDO
JPS5142613A (en) * 1974-10-07 1976-04-10 Canon Kk KOSOKUINJISORENOIDO
JPS52101117A (en) * 1976-02-19 1977-08-24 Nippon Electric Co Type hammer machanism for printer
JPS5393920A (en) * 1977-01-26 1978-08-17 Hitachi Ltd Typewriter
JPS578670B2 (en) * 1977-01-26 1982-02-17
JPS52164910U (en) * 1977-05-16 1977-12-14

Also Published As

Publication number Publication date
DE1806714A1 (en) 1970-06-25
FR2022487A1 (en) 1970-07-31
NL6916437A (en) 1970-05-06

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