Control system for printing machines, especially numbering machi

Details Control system for printing machines, especially numbering machi Control system for printing machines, especially numbering machi

1988-12-14

1989-05-02

Pearson, Charles

Printing

Selective or progressive

Numbering

101 92, 101228, B41F 504

Patent

active

048257613

ABSTRACT:
A printing machine which has a printing cylinder (1) having automatically incremented numbering barrels (2) includes drive means (40-45) which normally maintain the printing cylinder in speed and phase synchronization with a train of documents on a web (11). The drive means is operable to decelerate the printing cylinder and then to cause the printing cylinder to regain its normal operating speed so that the web overtakes the printing by a selected distance before the next printing nip is formed.

REFERENCES:
patent: 1028199 (1912-06-01), Dunlany
patent: 3125950 (1964-03-01), Ayers
patent: 3216347 (1965-11-01), Bradley
patent: 4068582 (1978-01-01), Poitras et al.
patent: 4207814 (1980-06-01), Schenk
"Numerieren: Elektronik Soll Sicherheit Erhohen", in Magazin Technik, No. 3, 1979, pp. 190, 192.

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