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Printing head assembly

  • US 4,600,323 A
  • Filed: 01/10/1985
  • Issued: 07/15/1986
  • Est. Priority Date: 01/25/1984
  • Status: Expired due to Fees
First Claim
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1. An armature actuating mechanism, comprising:

  • (a) an armature;

    (b) a resilient member fixed to one end of said armature;

    (c) a permanent magnet for attracting said armature while resiliently deflecting said resilient member;

    (d) an electro-magnet including a core having a magnetic surface facing the armature and coils wound around the core and adapted to cancel the attracting force produced by said permanent magnet;

    (e) first magnetic member connected magnetically to said core of the electro-magnet;

    (f) second magnetic member located adjacent to said permanent magnet and having a magnetic surface facing the armature;

    (g) a first magnetic bonding material layer between one side of said permanent magnet and said first magnetic member;

    (h) a second magnetic bonding material layer between the other side of said permanent magnet and said second magnetic member; and

    (i) said magnetic material layer including mixed magnetic particulate material and bonding means for bonding said permanent magnet to said first and second magnetic members.

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