Conversion of letterpress to offset printing

Details Conversion of letterpress to offset printing Conversion of letterpress to offset printing

1986-06-18

1989-01-17

Fisher, J. Reed

Printing

Multicolor

Processes

101177, 101221, B41F 506, B41F 516, B41F 522

Patent

active

047981377

ABSTRACT:
A method and apparatus for conversion of a web fed letterpress unit (10) into a web fed offset printing press unit (42) having a main frame (12) an auxiliary frame (44) inside the main frame for receiving cylinders, a pair of offset plate cylinders (46 and 46a) for mounting printing plates thereon, an inking arrangement (16, 18 and 20) for applying films of ink to the plates, and a pair of blanket cylinders (48 and 48a) in close proximity to a position for respective rolling contact with the plates on the plate cylinder and the other blanket cylinder. An offset press gear train (114) is installed outside the frames if the shafts for the cylinders can be extended through the bores (56, 56a, 58, 58a, 76 and 112) in the main frame left from the removed letterpress unit cylinders. Otherwise the gear train (54) is placed inside the main frame. Pilots (60, 60a, 62 and 62a) for insertion into bores in the main frame guide the installation of the auxiliary frame. Eccentric bearings (68) are installed for bodily swinging cylinders between alternative positions.

REFERENCES:
patent: 3072050 (1963-01-01), Wolff
patent: 3404626 (1968-10-01), White et al.
patent: 3433155 (1969-03-01), Norton
patent: 3470816 (1969-10-01), Piecha et al.
patent: 3616751 (1971-11-01), Mowry
patent: 3986454 (1976-10-01), Granger
patent: 4144811 (1979-03-01), Barnett
patent: 4183297 (1980-01-01), Skiera

Affiliated with

Also associated with

Rating

Conversion of letterpress to offset printing does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Conversion of letterpress to offset printing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Conversion of letterpress to offset printing will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2410084