Cutting – Processes – Plural cutting steps
Patent
1974-11-21
1977-01-04
Blunk, Evon C.
Cutting
Processes
Plural cutting steps
83235, 83262, 83446, 226 1, 226114, B26D 112
Patent
active
040006719
ABSTRACT:
Apparatus for feeding a continuous web of photosensitive paper into a reprographic machine so that the leading edges of the paper and a transparent master sheet to be copied are co-incident as they enter exposure and developing stations, and to ensure that the tail end of the paper is cut, during continuous forward movement of the leading edge, so that the trailing edge of the severed paper co-incides with the tail end of the master sheet. The feed path of the paper includes a curved portion defined by an arcuate-section guide and a concentrically mounted roller. A loop of paper is formed by moving the roller out of the guide and the rear end of the paper is then held stationary and cut by a guillotine while the paper forming the loop is continuously fed forward. The timing of the feeding and cutting operations on the paper is controlled by micro-switches actuated by the leading and trailing ends of the master sheet.
REFERENCES:
patent: 1693876 (1928-12-01), Unruh
patent: 1933336 (1933-10-01), Peterman
patent: 2667924 (1954-02-01), Dutro
patent: 3037690 (1962-06-01), Tailleur
patent: 3472106 (1969-10-01), Sames
patent: 3552249 (1971-01-01), Purley et al.
patent: 3561655 (1971-02-01), Kogandori
patent: 3673905 (1972-07-01), Kono
Blunk Evon C.
Harper & Tunstall Limited
Stoner Jr. Bruce H.
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