Printing – Intaglio – Rotary
Patent
1989-09-06
1990-10-23
Burr, Edgar S.
Printing
Intaglio
Rotary
101349, B41F 910, B41F 3104
Patent
active
049643363
ABSTRACT:
A chambered doctor blade unit (1) has at least one doctor blade (7, 8; 32) projecting from leading edges of a generally U-shaped or channel-shaped rail element, closed off at the lateral ends by side walls (4) to form the unit so that it can be inexpensively made by extrusion, rolling or other simple profiled rail forming machinery. A rear wall of the unit is formed with an elongated slit (12), preferably narrower in the middle. The unit (1) can be releasably coupled to a carrier (2) by interlocking rotatable pins (22) formed with projecting locking cams (23) with grooves or recesses (25) formed in bolts projecting from a rear surface (10) of the chambered doctor blade unit (1). The chambered doctor blade unit (1) thus can be readily removed by rotating the pins by handles (26), not requiring tools, and maximum ink distribution is ensured by the elongated slit which receives ink via a flattened funnel-shaped distribution duct (16) coupled to the holder unit (2).
REFERENCES:
patent: 2377110 (1945-05-01), Smith
patent: 2377482 (1945-06-01), Crafts
patent: 3566787 (1971-03-01), Moos
patent: 4085672 (1978-04-01), Grosart
patent: 4590855 (1984-06-01), Schommer et al.
patent: 4879949 (1989-11-01), Vennike
Bock Georg
Gollinger Franz X.
John Thomas
Burr Edgar S.
Hilten John S.
MAN Roland Druckmaschinen AG
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