Printing – Printing members – Plate mountings
Patent
1995-08-14
1998-01-27
Funk, Stephen R.
Printing
Printing members
Plate mountings
335295, B41F 2702
Patent
active
057112231
ABSTRACT:
A magnetic plate cylinder for a printing press includes an outer cylinder member having circumferentially and axially spaced plugs of magnetic material or axially spaced apart rings of magnetic material for directing a magnetic field in such a way as to hold a magnetic printing plate on the outer surface of the outer cylinder member. An inner cylinder member includes circumferentially and axially spaced permanent magnet members supported on a cylinder of nonmagnetic material or stacked circular ring magnets interposed between rings of magnetic or nonmagnetic material for generating a magnetic field passing through the plugs or rings of magnetic material on the outer cylinder member. The inner cylinder member is disposed to form a radial air gap between the outer cylinder member and an outer surface of the inner cylinder member. The inner cylinder member can be rotated or axially translated relative to the outer cylinder member to change the intensity of the magnetic field to provide for positioning a printing plate on or removing a printing plate from the outer cylinder member. Ring magnets on the inner cylinder member may be of conventional polarization with poles on opposite side faces of the ring or with poles formed on the radially inner and outer circumferential surfaces of the ring.
REFERENCES:
patent: 1531462 (1925-03-01), Marquardt
patent: 2952205 (1960-09-01), Dunwoodie
patent: 3017545 (1962-01-01), Meier
patent: 3079535 (1963-02-01), Schultz
patent: 3206655 (1965-09-01), Reijnst
patent: 3670646 (1972-06-01), Welch, Jr.
patent: 3721189 (1973-03-01), Bray
patent: 3734017 (1973-05-01), Trier et al.
patent: 3742852 (1973-07-01), Leffler et al.
patent: 3824926 (1974-07-01), Fukuyama
patent: 3885498 (1975-05-01), Jenkins
patent: 3919937 (1975-11-01), Kostal
patent: 4029013 (1977-06-01), George et al.
patent: 4072920 (1978-02-01), Wright
patent: 4078031 (1978-03-01), Bishop
patent: 4510868 (1985-04-01), Fischer
patent: 4587900 (1986-05-01), Oshio
patent: 4625928 (1986-12-01), Peekna
patent: 4628815 (1986-12-01), Van Kanegan
patent: 4676161 (1987-06-01), Peekna
patent: 4823697 (1989-04-01), Randazzo
patent: 4831930 (1989-05-01), Leanna
patent: 4878429 (1989-11-01), Russo
patent: 4890553 (1990-01-01), Turner
patent: 5038680 (1991-08-01), Bain
patent: 5255604 (1993-10-01), Durr
Colilla Daniel J.
Eugene L. Green, Sr.
Funk Stephen R.
Griggs Dennis T.
LandOfFree
Magnetic plate cylinder does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Magnetic plate cylinder, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic plate cylinder will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-334952