INK FOUNTAIN FOR PRINTER

PURPOSE: To remove a local thermal expansion difference by providing heat insulation members on a lower surface and a back surface of an ink duct, and directing warm air flow of a printing press to a side of an ink duct opposed to an ink duct roller and toward an ink metering roller of the duct. CONSTITUTION: An ink duct 2 is supported at both sides on a support, which is coupled by a traverse beam 5. Partial mutual cancellation of thermal expansion of an ink duct metering member is performed. And, hence since no additional heat source is needed, a heat insulation member 6 is provided on a lower surface of an ink duct body. A central range of a side opposed to an ink duct roller 1 of the body is loaded by a warm air flow of the heat generated during operating time of a printing press. The blower 3 is disposed above a sheet guide roller under the duct 2 near a heat source of the heat generated in the press during its operation. The warm air from the drum is operated with this range of the duct 2. The blower 3 is covered by a guide unit 4, and an essential part of the duct 2 is all uniformly flushed.