JPS6424762A - Printing head - Google Patents

Printing head

Info

Publication number
JPS6424762A
JPS6424762A JP18254687A JP18254687A JPS6424762A JP S6424762 A JPS6424762 A JP S6424762A JP 18254687 A JP18254687 A JP 18254687A JP 18254687 A JP18254687 A JP 18254687A JP S6424762 A JPS6424762 A JP S6424762A
Authority
JP
Japan
Prior art keywords
bypass
permanent magnet
current
printing head
layers
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.)
Pending
Application number
JP18254687A
Other languages
Japanese (ja)
Inventor
Jun Uozumi
Masayoshi Komori
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP18254687A priority Critical patent/JPS6424762A/en
Publication of JPS6424762A publication Critical patent/JPS6424762A/en
Pending 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
    • B41J2/27—Actuators for print wires
    • B41J2/28—Actuators for print wires of spring charge type, i.e. with mechanical power under electro-magnetic control

Landscapes

  • Impact Printers (AREA)

Abstract

PURPOSE:To reduce not only magnetic interference but also the current consumption of a printing head and to control a demagnetizing current, by providing a bypass shortening the flux of a permanent magnet in the vicinity of the permanent magnet. CONSTITUTION:A ring-shaped bypass 23 is arranged so as to grasp a permanent magnet 19, a ring 18 and a core 20 and always attracted to the permanent magnet 19. The bypass 23 is constituted of, for example, three layers but the bypass may be further superposed on the bypass. Further, in order to adjust the attraction force of the permanent magnet, the number of the layers of the bypass can be adjusted. For example, when a current is allowed to flow to a demagnetizing coils 22-2, the leak magnetic flux thereof is fed back through the bypass 23 and, therefore, magnetic interference is reduced.
JP18254687A 1987-07-22 1987-07-22 Printing head Pending JPS6424762A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18254687A JPS6424762A (en) 1987-07-22 1987-07-22 Printing head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18254687A JPS6424762A (en) 1987-07-22 1987-07-22 Printing head

Publications (1)

Publication Number Publication Date
JPS6424762A true JPS6424762A (en) 1989-01-26

Family

ID=16120177

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18254687A Pending JPS6424762A (en) 1987-07-22 1987-07-22 Printing head

Country Status (1)

Country Link
JP (1) JPS6424762A (en)

Similar Documents

Publication Publication Date Title
JPS54119220A (en) Magnetic head
JPS55103979A (en) Printing hammer mechanism with twin electromagnet coil and twin magnetic pole piece
JPS5649279A (en) Releasing type printer head
JPS6424762A (en) Printing head
GB1397183A (en) Wire printers
EP0349212A3 (en) Needle printing head
GB1417492A (en) Hammer control mechanism for a printer
GB1424986A (en) Electromagnetic device
JPS5776811A (en) Composite core for transformer
JPS57196513A (en) Choke coil of switching regulator or the like
JPS55108712A (en) Dc electromagnet
JPS57163578A (en) Wire printing head
JPS57208114A (en) Electromagnet spool
JPS57146970A (en) Gas flux control method by electromagnetic valve
JPS55135280A (en) Electromagnet valve for contactless sequence
JPS55152073A (en) Magnetic circuit construction for printing head of wire dot printer
JPS5776804A (en) Polarized solenoid
JPS5524613A (en) Magnetizer for magnetic flaw detection
JPS6426341A (en) Superconducting compensating winding
DE58905472D1 (en) Matrix printhead of the preloaded type.
JPS5240026A (en) High-speed printing equipment
JPS5793168A (en) Wire dot type printer head
JPS6433841A (en) Pulse magnet
JPS5622567A (en) Ignition signal generator for contactless ignitor
JPS5634108A (en) Magnetic recording and reproducing apparatus