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US 5,694,848 AGranted
Printing unit for water based inks
AssigneesHeidelberger Druckmaschinen AG, Heidelberg Harris, Inc.
InventorRoland Thomas Palmatier
Life of this patent
Estimating the term…
Abstract
A printing unit for rotary printing press includes an inking unit and a print cylinder carrying a print form suitable for the reception of water based inks. The printing unit also includes a blanket cylinder carrying a printing blanket and a cooling unit for maintaining an ink carrying surface of one or more of the print form, the printing blanket, and the inking unit at a predetermined temperature which is suitable for printing with water-based inks.
Claims22
A printing unit for a rotary printing press comprising:
- a print cylinder for supporting a print form suitable for printing with water based inks, the print form having an outer ink carrying surface;
- an inking unit for applying water based ink to the print form, the inking unit having an outer ink carrying surface;
- a blanket cylinder for supporting a printing blanket, the printing blanket having an outer ink carrying surface;
- and
- a cooling unit for maintaining a temperature of the ink carrying surface of one or more of the print form, the inking unit, and the printing blanket at a predetermined level which is above a dew point of an atmosphere surrounding the outer ink carrying surfaces, wherein the cooling unit comprises a print cylinder cooling unit coupled to the print cylinder, the print cylinder cooling unit circulating a first cooling agent through the print cylinder to maintain the outer ink carrying surface of the print form at the predetermined level.
2 more elements
A printing unit for a rotary printing press comprising:
- a print cylinder for supporting a print form suitable for printing with water based inks, the print form having an outer ink carry surface;
- an inking unit for applying water based ink to the print form, the inking unit having an outer ink carrying surface;
- a blanket cylinder for supporting a printing blanket, the printing blanket having an outer ink carrying surface;
- and
- a cooling unit for maintaining a temperature of the ink carrying surface of one or more of the print form, the inking unit, and the printing blanket at a predetermined level, wherein the cooling unit includes a blanket cylinder cooling unit coupled to the blanket cylinder, the blanket cylinder cooling unit circulating a cooling agent through the blanket cylinder to maintain the outer ink carrying surface of the printing blanket at the predetermined level.
2 more elements
A printing unit for a rotary printing press comprising:
- a print cylinder for supporting a print form suitable for printing with water based inks, the print form having an outer ink carrying surface;
- an inking unit for applying water based ink to the print form, the inking unit having an outer ink carrying surface;
- a blanket cylinder for supporting a printing blanket, the printing blanket having an outer ink carrying surface;
- a cooling unit for maintaining a temperature of the ink carrying surface of one or more of the print form, the inking unit, and the printing blanket at a predetermined level which is above a dew point of an atmosphere surrounding the outer ink carrying surfaces, wherein the cooling unit circulates an agent through one or more of the print cylinder, the blanket cylinder, and inking unit, and wherein the cooling unit further includes an agent cooling mechanism and an agent heating mechanism.
1 more element
A printing unit for a rotary printing press comprising:
- a print cylinder for supporting a print form suitable for printing with water based inks, the print form having an outer ink carrying surface;
- an inking unit for applying water based ink to the print form, the inking unit having an outer ink carrying surface;
- a blanket cylinder for supporting a printing blanket, the printing blanket having an outer ink carrying surface;
- a cooling unit for maintaining a temperature of the ink carrying surface of one or more of the print form, the inking unit, and the printing blanket at a predetermined level which is above a dew point of an atmosphere surrounding the outer ink carrying surfaces;
- a gear side wall including a gear box;
- a work-side wall, the blanket cylinder and print cylinder supported for rotation by the gear-side and work-side walls;
- a first sensor mounted to the gear-side wall for monitoring a gear-side temperature level;
- a second sensor mounted to the work-side wall for monitoring a work-side temperature level;
- a heat exchanger coupled to the gear box for controlling a temperature of a fluid within the gear box;
- and
- a control unit having inputs connected to the first and second sensors and having an output connected to the heat exchanger, the control unit actuating the heat exchanger as a function of the work-side and gear-side temperature levels.
8 more elements
Dependencies are inferred from the claim text.