| 主权项 |
1. A liquid ejection apparatus comprising:
a conveyance mechanism configured to convey a recording medium; a first liquid ejection head which includes first nozzles and is configured to eject black liquid through the first nozzles; at least one second liquid ejection head which includes second nozzles and is configured to eject color liquid which is not black through the second nozzles; a sensor configured to detect whether the recording medium conveyed by the conveyance mechanism opposes the first nozzles of the first liquid ejection head of the conveyance mechanism; a maintenance mechanism configured to perform recovery action for the first nozzles of the first liquid ejection head and the second nozzles of the at least one second liquid ejection head, a storage unit configured to store image data of an image formed on the recording medium; and a control device configured to:
control the first liquid ejection head, the at least one second liquid ejection head, and the conveyance mechanism so that the image of the image data is formed on the recording medium;based on a detection result of the sensor, determine whether jamming of the recording medium has occurred at a position opposing the first nozzles of the first liquid ejection head of the conveyance mechanism;when it is determined that the jamming has occurred while the image of the image data is being formed on the recording medium, control the first liquid ejection head, the at least one second liquid ejection head, and the conveyance mechanism so that the formation of the image of the image data on the recording medium is interrupted until the jamming of the recording medium is resolved;when it is determined based on the image data stored in the storage unit that the image formed on the recording medium is a color image, control the maintenance mechanism so that the recovery action for the first nozzles of the first liquid ejection head and the second nozzles of the at least one second liquid ejection head is performed after the jamming of the recording medium is resolved, and then control the first liquid ejection head, the at least one second liquid ejection head, and the conveyance mechanism so that the formation of the color image on the recording medium based on the image data, which has been interrupted on account of the jamming of the recording medium, is resumed;when it is determined based on the image data stored in the storage unit that the image formed on the recording medium is a monochrome image, control the maintenance mechanism so that the recovery action for the first nozzles of the first liquid ejection head is performed after the jamming of the recording medium is resolved, and then control the first liquid ejection head and the conveyance mechanism so that the formation of the monochrome image on the recording medium based on the image data, which has been interrupted on account of the jamming of the recording medium, is resumed; andwhen it has been determined that the image formed on the recording medium based on the image data is a color image before it is determined that the jamming of the recording medium has occurred in the conveyance mechanism and the entirety of the image formed on the recording medium after the jamming of the recording medium is resolved is the monochrome image,determine that the image formed on the recording medium based on the image data is the monochrome image when the occurrence of the jamming is detected while the image is being formed on the recording medium based on the image data. |
