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US 5,595,115 AGranted
Printing mechanism including means for cooling and means for mounting sleeve shaped forms on transfer and form cylinders
AssigneeMAN Roland Druckmaschinen AG
InventorsGunnar Rau, Karl H. Muller
Life of this patent
Estimating the term…
Abstract
A printing mechanism for waterless offset printing including a form cylinder that carries a sleeve-shaped printing form and/or a transfer cylinder that carries a sleeve-shaped transfer form such that the forms can be slipped onto or removed from their respective cylinder. Both the transfer cylinder and the form cylinder having internal and external cooling arrangements.
Claims28
A printing mechanism for waterless offset printing, comprising:
- a frame having side walls, one of the side walls having an opening therein;
- a form cylinder;
- a transfer cylinder, the form cylinder and the transfer cylinder being rotatably mounted to the side walls of the frame;
- inking means for inking the form cylinder;
- means for cooling at least one of the transfer cylinder and the form cylinder;
- and a sleeve-shaped form removably mounted on at least one of the form cylinder and the transfer cylinder, the sleeve-shaped form being movable onto and off of the respective cylinder through the opening in the one of the side walls of the frame, a first of the side walls is at a drive side of the cylinders and a second of the side walls is on an operating side of the cylinders, and further comprising a gear case arranged at the side wall on the drive side, a heat exchanger in operative connection with the gear case, means for supplying coolant to the heat exchanger, a regulating valve and regulator for regulating coolant supply to the heat exchanger, and a separate thermal sensor arranged at each of the side walls and being connected to the regulator.
3 more elements
A printing mechanism for waterless offset printing having no moistening device comprising:
- a form cylinder and a transfer cylinder;
- side walls for rotatably mounting said form cylinder and said transfer cylinder;
- inking means for inking the form cylinder;
- means for cooling said form cylinder and said transfer cylinder, one of said side walls is at a drive side of the cylinders and another of said side walls is on an operating side of said cylinders;
- a gear case arranged at said side wall on the drive side;
- a heat exchanger in operative connection with said gear case;
- means for supplying coolant to said heat exchanger;
- a regulating valve and a regulator for regulating coolant supply to said heat exchanger;
- and a separate thermal sensor arranged at each of said side walls and being connected to said regulator.
6 more elements
Dependencies are inferred from the claim text.