INKJET IMAGE FORMING APPARATUS AND METHOD TO CONTROL THE SAME

摘要

An inkjet image forming apparatus includes a negative pressure controller in an ink supply flow path that connects an ink storage and a print head. The negative pressure controller includes a valve to open and close the flow path to control a negative pressure applied to the print head. If there is a need to cool the ink heated by a maintenance operation performed on the print head or to cool the ink heated by a print job, a controller in the apparatus controls the valve of the negative pressure controller to release the negative pressure applied to the print head so that the print head is filled with low-temperature ink from the ink storage.