Patent ID: 7311372
Filing Date: 2007-12-25
Classification: B41J

Abstract:
1. An ink jet recording apparatus, comprising: an ink jet recording head which ejects a droplet of an ink toward a recording medium; a driver circuit device which applies an electric voltage to the ink jet recording head so that the ink jet recording head ejects the droplet of the ink toward the recording medium; a flexible wiring substrate which is electrically connected, at a first portion thereof, to the ink jet recording head, is electrically connected, at a second portion thereof, to an external device, and is electrically connected, at a third portion thereof located between the first and second portions, to one of opposite surfaces of the driver circuit device, a carriage on which the ink jet recording head, the flexible wiring substrate and the driver circuit device are mounted; and a first heat sink and a second heat sink which are mounted on the carriage such that respective one ends of the first and second heat sinks are connected to each other and respective other ends of the first and second heat sinks cooperate with each other to sandwich the driver circuit device and the third portion of the flexible wiring substrate, and such that the first and second heat sinks cooperate with each other to define an inner space having a substantially rectangular parallelepiped shape, wherein the other end of the first heat sink contacts at least a portion of the third portion of the flexible wiring substrate, the other end of the second heat sink contacts at least a portion of an other of the opposite surfaces of the driver circuit device, and the ink jet recording head is provided outside the inner space defined by the first and second heat sinks.