Abstract: A method of calibrating a wiper position in an ink jet printer having a nozzle plate and a wiper arranged to wipe the nozzle plate, the nozzle plate having a number of nozzles each of which is in fluid communication with a pressure chamber, each pressure chamber having an actuator for exciting a pressure wave in a liquid in the pressure chamber, and a detection system arranged to detect pressure fluctuations in the pressure chamber includes adjusting the wiper to a position in which it is set against the nozzle plate; exciting a pressure wave in at least one of the pressure chambers; recording the pressure fluctuations in said at least one pressure chamber; deciding, on the basis of the detected pressure fluctuations, whether the wiper is set correctly against the nozzle that is in fluid communication with said at least one pressure chamber; and correcting the position of the wiper if necessary.

Abstract: An ink handling system for an ink jet printer includes a local ink reservoir associated with a print head assembly of the printer, a fill state sensor arranged to detect a fill state of the local ink reservoir, a pump arranged to supply ink into the local ink reservoir, and a pump controller for controlling an operation of the pump, including controlling an on/off state of the pump, on the basis of a detection result of the fill state sensor.

Abstract: A method of calibrating a wiper position in an ink jet printer having a nozzle plate and a wiper arranged to wipe the nozzle plate, the nozzle plate having a number of nozzles each of which is in fluid communication with a pressure chamber, each pressure chamber having an actuator for exciting a pressure wave in a liquid in the pressure chamber, and a detection system arranged to detect pressure fluctuations in the pressure chamber includes adjusting the wiper to a position in which it is set against the nozzle plate; exciting a pressure wave in at least one of the pressure chambers; recording the pressure fluctuations in said at least one pressure chamber; deciding, on the basis of the detected pressure fluctuations, whether the wiper is set correctly against the nozzle that is in fluid communication with said at least one pressure chamber; and correcting the position of the wiper if necessary.

Abstract: An ink handling system for an ink jet printer includes a local ink reservoir associated with a print head assembly of the printer, a fill state sensor arranged to detect a fill state of the local ink reservoir, a pump arranged to supply ink into the local ink reservoir, and a pump controller for controlling an operation of the pump, including controlling an on/off state of the pump, on the basis of a detection result of the fill state sensor.