Abstract: A method of driving an electromechanical converter of a print head of a continuous inkjet printer, wherein the electromechanical converter is arranged to break up a continuous stream of ink into a plurality of drops. The method includes determining a modulation voltage to drive the electromechanical converter, at least a property of the modulation voltage being controlled to take into account movement of a break up point of the continuous stream of ink, and to ensure that in a characteristic of modulation voltage versus a property at least indicative of a break up point of the continuous stream of ink, the characteristic has a predetermined gradient, or a gradient related to this predetermined gradient; and driving the electromechanical converter at the determined modulation voltage.

Abstract: An ink jet printer comprising a printing fluid cartridge receiving portion arranged to receive a printing fluid cartridge (2) and to allow passage of printing fluid from a received printing fluid cartridge to printing fluid conduits of the ink jet printer; a data reader arranged to read data indicating a quantity of fluid within a received cartridge from an electronic data storage device associated with the received printing fluid cartridge; and a controller arranged to generate update data usable to modify data stored on said electronic data storage device and to modify data stored on said electronic storage device based upon said update data such that data stored on said electronic data storage device indicates an updated quantity of fluid in said printing fluid cartridge.

Abstract: An ink jet printer comprising a printing fluid cartridge receiving portion arranged to receive a printing fluid cartridge (2) and to allow passage of printing fluid from a received printing fluid cartridge to printing fluid conduits of the ink jet printer; a data reader arranged to read data indicating a quantity of fluid within a received cartridge from an electronic data storage device associated with the received printing fluid cartridge; and a controller arranged to generate update data usable to modify data stored on said electronic data storage device and to modify data stored on said electronic storage device based upon said update data such that data stored on said electronic data storage device indicates an updated quantity of fluid in said printing fluid cartridge.

Abstract: A method of driving an electromechanical converter of a print head of a continuous inkjet printer, wherein the electromechanical converter is arranged to break up a continuous stream of ink into a plurality of drops. The method includes determining a modulation voltage to drive the electromechanical converter, at least a property of the modulation voltage being controlled to take into account movement of a break up point of the continuous stream of ink, and to ensure that in a characteristic of modulation voltage versus a property at least indicative of a break up point of the continuous stream of ink, the characteristic has a predetermined gradient, or a gradient related to this predetermined gradient; and driving the electromechanical converter at the determined modulation voltage.

Abstract: A method is disclosed for controlling a multi-nozzle CIJ printhead having a pressure modulator for causing streams of ink emitted from the nozzles to be broken up into individual droplets, and charge electrodes 6 and charge electrode controllers for controllably applying a charge to individual ones of the droplets in each stream. The method involves generating a modulation waveform to operate the pressure modulator to cause droplets to be generated in each stream and operating the charge controllers to supply a charge signal waveform to each charge electrode. The charges applied to the streams of droplets are compared to a reference or threshold value. The number of droplet streams in which the droplet charges exceed the reference or threshold value is determined plural times and an average value for the number is calculated. This step is repeated a number of times and if the average is less than the average previously calculated then the threshold or reference value is reduced.

Abstract: A method for adjusting the amplitude of the pressure modulation waveform in a multi-nozzle continuous jet printhead having a pressure modulator for causing streams of ink emitted from the nozzles to be broken up into individual droplets, and charge electrodes and change electrode controllers for controllably applying a charge to individual ones of the droplets in each stream.

Abstract: A door hinge for a vehicle door is provided with an integrated door check. One hinge member carries on its one end face a profile in the form of depressions, in which are inserted the retaining elements, e.g. in the form of balls, for a temporary arresting in predetermined positions. The balls are pressed down by a set of cup springs via a pressure plate or a ball bearing, so that there is a rolling movement of the retaining elements on the profile faces and on the pressure plate or ball bearing. The door check integrated into the door hinge is adjustable and/or readjustable with respect to its arresting force.