Printing – Selective or progressive – Bed and platen machines
Patent
1980-05-27
1983-07-12
Coven, Edward M.
Printing
Selective or progressive
Bed and platen machines
101 9329, 101 9334, B41J 902
Patent
active
043924239
ABSTRACT:
A printing hammer driving apparatus for high-speed printers comprises a lever member acting as a hammer operating part, an armature forming a part of a magnetic circuit, and an electromagnet forming, together with the armature, the magnetic circuit. The lever member has a rotational supporting point at the base end thereof and is made of a light-weight non-magnetic material. The armature is projected in one of the rotational directions of the lever member from the intermediate part of the lever member. The electromagnet has at least one core and an exciting coil wound on the core. A core has a magnetic pole face perpendicular to the direction of attraction of the armature and a magnetic pole face parallel to the direction of attraction of the armature. The magnetic pole face perpendicular to the direction of armature attraction is opposed with a gap to the forward end face of the armature, and the magnetic pole face parallel to the direction of armature attraction is opposed with a gap to the surface of the armatures parallel to the direction of attraction thereof.
REFERENCES:
patent: 3196783 (1965-07-01), Gross
patent: 3351006 (1967-11-01), Belson
patent: 3609609 (1971-09-01), Bertazzi
patent: 3705370 (1972-12-01), Chai et al.
patent: 3714892 (1973-02-01), Perry
patent: 3726213 (1973-04-01), Herbert
patent: 3747521 (1973-07-01), Hamilton et al.
patent: 4018155 (1977-04-01), Cargill
patent: 4121518 (1978-10-01), Prior et al.
patent: 4224589 (1980-09-01), Tamulis
Mulzet et al., IBM Tech. Discl. Bulletin, vol. 16, No. 11, Apr. 1, 1974, pp. 3529-3531.
Gilbert et al., IBM Tech. Discl. Bulletin, vol. 17, No. 3, Aug. 1974, pp. 780-781.
Tashjian et al., IBM Tech. Discl. Bulletin, vol. 10, No. 11, Apr. 1968.
Luoma, IBM Tech. Discl. Bulletin, vol. 17, No. 1, Jun. 1974, pp. 340-341.
Hayama Toru
Kotani Sumihisa
Nakajima Isao
Okuna Kenji
Tagusari Koji
Coven Edward M.
Hitachi , Ltd.
Hitachi Koki Co,. Ltd.
LandOfFree
Printing hammer driving apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Printing hammer driving apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Printing hammer driving apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-193223