| 摘要 |
A recording head has a subtank. The amount of ink remaining within the subtank is detected or calculated by a device, and the amount of ink necessary for an image of at least one recording sheet is calculated by another device. The two amounts of ink are compared. If it is determined that the ink remaining within the subtank is smaller, the recording head is moved to an ink replenishing mechanism provided outside of a printing range of a recording apparatus. The subtank mounted in the recording head is connected to the ink replenishing mechanism, and ink is supplied from the main tank. Ink replenishment is executed by a system for supplying ink using a pressurizing device or a negative-pressure device. By executing an operation of wiping ink adhering to a nozzle portion of the recording head and preliminary discharge not relating to printing after a recovery operation for the recording head, it is possible to realize stable ink discharge and obtain a high-quality image.
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