Patent ID: 8336983

Claim:
An ink jet recording apparatus, comprising: an inkjet head in which is formed an ejection surface from which ink is ejected; a conveyor mechanism which is configured to convey a recording medium on a conveyor surface in a medium conveyance direction, so as to be opposed to the ejection surface; a sensor configured to detect, at a prescribed position, the recording medium being conveyed in the medium conveyance direction on the conveyor surface by the conveyor mechanism; a relative movement mechanism configured to move at least one of the conveyor mechanism and the ink-jet head relative to each other such that the conveyor mechanism and the ink jet head are located selectively at one of: a recording position at which an image is recorded on the recording medium with the ink ejected from the ink jet head; and a medium removal position at which a distance between the ejection surface and the conveyor mechanism is larger than that when the conveyor mechanism and the ink jet head are located at the recording position and at which a jammed recording medium which is jammed between the ejection surface and the conveyor mechanism is allowed to be removed; an output device configured to detect a prescribed operation and to output a jam-clearing completion signal indicative of completion of a jam-clearing processing for clearing the jam of the recording medium; and a controller having a jam judging portion configured to judge an occurrence of a jam of the recording medium between the ejection surface and the conveyor mechanism, the controller being configured: to control the relative movement mechanism to conduct a first operation in which the at least one of the conveyor mechanism and the ink jet head is moved relative to each other such that the conveyor mechanism and the ink jet head are located at the medium removal position from the recording position, when the judging portion judges the occurrence of the jam of the recording medium; to control the conveyor mechanism to conduct a second operation which is conducted after the first operation and in which an unremoved jammed recording medium which has not been removed is conveyed in the medium conveyance direction so as to be detectable by the sensor, when the output device outputs the jam-clearing completion signal, the second operation being conducted with the conveyor mechanism and the ink jet head located at the medium removal position without operating the relative movement mechanism; and to control the relative movement mechanism to conduct a third operation in which the at least one of the conveyor mechanism and the ink jet head is moved relative to each other such that the conveyor mechanism and the ink jet head are located at the recording position from the medium removal position after the second operation, when the sensor does not detect the unremoved jammed recording medium in the second operation.