Typewriting machines – Typing by other than type-face or type-die – Character formation by impact
Patent
1989-03-20
1990-07-31
Wiecking, David A.
Typewriting machines
Typing by other than type-face or type-die
Character formation by impact
101 9305, B41J 312
Patent
active
049446150
ABSTRACT:
A print head assembly of a printing device, in which a supporting member, supporting a plurality of armatures, and a permanent magnet member, urging the armatures in one direction by means of its magnetic force, are arranged between a head body, as a yoke member, including a plurality of cores wound individually with solenoid coils, and a guide member having a nose for guiding a number of print wires. All these members are joined together along an assembling axis. The permanent magnet member has a square shape, including a pair of first outer peripheral edges, extending parallel to a print line, and a pair of second outer peripheral edges, extending at right angels to the print line. Thus, the whole print head assembly is rectangular in shape. Retaining projections, protruding along the assembling axis, are formed individually at the corner portions of the outer peripheral portion of the guide member. Corresponding to the retaining projections, engaging recesses are formed individually at the corner portions of the outer peripheral portion of the head body. As the retaining projections engage their corresponding engaging recesses, the print head assembly is assembled so that the individual members thereof are prevented from rotating relatively around the assembling axis.
REFERENCES:
patent: 2397545 (1946-04-01), Hardinge
patent: 2414882 (1947-01-01), Longfellow
patent: 2441765 (1948-05-01), Hopkins
patent: 2489870 (1949-11-01), Dzus
patent: 2702543 (1955-02-01), Pugh
patent: 2801631 (1957-08-01), Charnley
patent: 3002514 (1961-10-01), Deyerle
patent: 3025853 (1962-03-01), Mason
patent: 3489143 (1970-01-01), Halloran
patent: 3842825 (1974-10-01), Wagner
patent: 3939498 (1976-02-01), Lee
patent: 4003376 (1977-01-01), McKay
patent: 4101985 (1978-07-01), Baumann
patent: 4120298 (1978-10-01), Fixel
patent: 4172452 (1979-10-01), Forte
patent: 4225250 (1980-09-01), Wagner et al.
patent: 4348120 (1982-09-01), Isobe et al.
patent: 4375338 (1983-03-01), Mitsuishi
patent: 4411538 (1983-10-01), Asano et al.
patent: 4438762 (1984-03-01), Kyle
patent: 4488543 (1988-12-01), Tornier
patent: 4506662 (1985-03-01), Anapliotis
patent: 4565193 (1986-01-01), Streli
patent: 4573458 (1986-03-01), Lower
patent: 4618277 (1986-10-01), Asano et al.
patent: 4628923 (1986-12-01), Medoff
patent: 4651724 (1987-03-01), Berentey
patent: 4773402 (1988-09-01), Asher
Kato Shigeki
Suzuki Yoshihumi
Brother Kogyo Kabushiki Kaisha
Wiecking David A.
LandOfFree
Permanent magnet print head assembly with a square magnet does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Permanent magnet print head assembly with a square magnet, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Permanent magnet print head assembly with a square magnet will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1395720