Cylinder apparatus of sheet-fed rotary press

Details Cylinder apparatus of sheet-fed rotary press Cylinder apparatus of sheet-fed rotary press

1984-09-20

1989-06-06

Pearson, Charles A.

Printing

Rolling contact machines

Rotary

101246, 101409, B41F 2104

Patent

active

048361038

ABSTRACT:
A cylinder apparatus of a sheet-fed rotary printing press having grippers which are pivotally supported inside a notch in a blanket cylinder brought into rolling contact with a plate cylinder and which is located in a vicinity of the leading edge of a printing plate on the plate cylinder, wherein phases of rotation of the plate and blanket cylinders are arranged such that the leading edge of the printing plate opposes a front end of the notch formed in the blanket cylinder which is located at a slightly advanced position with respect to a leading edge of the blanket, and a cam surface of a cam for opening/closing the grippers is shaped in such a manner that the grippers are kept opened when the leading edge of the printing plate opposes the front end of the notch formed in the blanket cylinder.

REFERENCES:
patent: 1231606 (1917-07-01), Henderson
patent: 1916454 (1933-07-01), Wohlrabe
patent: 2004136 (1935-06-01), Schultz
patent: 2088862 (1937-08-01), Lang
patent: 2309161 (1943-01-01), Breman et al.
patent: 2599776 (1952-06-01), Peyrebrune

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