Printing – Multicolor – Rotary machines
Patent
1980-09-24
1982-12-14
Fisher, J. Reed
Printing
Multicolor
Rotary machines
101181, 101248, B41F 506, B41F 1314
Patent
active
043632700
ABSTRACT:
A dual harmonic gear phasing device forming a part of a web-forming printing tower or other web-handling station is disclosed which allows static or dynamic, 360.degree. infinite phase alterations of web-contacting rollers for coarse and fine tuning of the registration of a multiple-station printing press. The phasing device comprises an enclosed, oil filled structure having a pair of tandem coupled harmonic drive gears respectively connected through gearing or the like to the press drive and to a desired roller for phase changing purposes. Each phasing device also includes a selectively operable stepper motor coupled to one of the harmonic gears for effecting phase alterations. The harmonic gears serve as a 1:1 gear ratio transmission during normal running operations. The phasing device can be used on hard impression or perfecting printing towers, and on other types of web-handling equipment where proper registration is important, such as numbering and punching units.
REFERENCES:
patent: 2906143 (1959-09-01), Mussier
patent: 3306188 (1967-02-01), Couzens et al.
patent: 3565006 (1971-02-01), Stewart
patent: 3724368 (1973-04-01), Treff
patent: 4072104 (1978-02-01), Schaffer
"Harmonic Drive Pancake Gearing", No. HDU Floco-76, USM Corporation, Woburn, Mass.
Bird Carlton A.
Propheter Howard L.
Ury Frank
Didde Graphic Systems Corporation
Fisher J. Reed
LandOfFree
Harmonic phasing device for printing press does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Harmonic phasing device for printing press, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Harmonic phasing device for printing press will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1197572