Method and apparatus for processing sheets of material in regist

Details Method and apparatus for processing sheets of material in regist Method and apparatus for processing sheets of material in regist

1990-02-01

1993-08-31

Yost, Frank T.

Cutting

Processes

83 74, 83732, B65H 23038

Patent

active

052399028

ABSTRACT:
The invention relates to a method, an apparatus and sheets of materials for producing marked security threads as are used to increase the protection of documents and parers of value against forgery. The inventive method is for processing, in particular cutting, security threads out of sheets of material in register, the sheets of material being fed to the processing units in exact alignment. The feed principal is based on guiding the sheet of material on at least one edge of the sheet, determining the position relative to one of the edges of the sheet, producing a signal form the determination of position, and positioning the feeding device relative to the processing unit so that the sheet of material runs into the latter in a predetermined position.

REFERENCES:
patent: 4093007 (1978-06-01), Hellstrom
patent: 4633747 (1987-01-01), Primich
patent: 4694181 (1987-09-01), Piller
patent: 4819528 (1989-04-01), Chadwick
patent: 4892336 (1990-01-01), Kaule et al.
patent: 4955265 (1990-09-01), Nakagawa et al.

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