摘要:
In an arrangement to supply ink to a print head unit having a print head, an input, and an output, a back-pressure tank having ink is provided and connected with the input of the print head unit. A degassing unit for ink and having an input and an output is also provided. A first selector valve is connected to the degassing unit input, the first selector valve in a first position establishing a connection of the degassing unit with the output of the print head unit. A second selector valve is connected to the degassing unit output, the second selector valve in a first position establishing a connection of the degassing unit with the back-pressure tank.
摘要:
In an arrangement to supply ink to a print head unit having a print head, an input, and an output, a back-pressure tank having ink is provided and connected with the input of the print head unit. A degassing unit for ink and having an input and an output is also provided. A first selector valve is connected to the degassing unit input, the first selector valve in a first position establishing a connection of the degassing unit with the output of the print head unit. A second selector valve is connected to the degassing unit output, the second selector valve in a first position establishing a connection of the degassing unit with the back-pressure tank.
摘要:
In a method to adjust the toner supply to a minimum value in a developer station of an electrographic printing or copying device in which charge images are generated on an intermediate carrier, the charge images being inked with toner at the developer station, a toner concentration is measured in the developer station via a toner marking applied on the intermediate carrier and inked with toner at the developer station. A measurement signal is generated. Dependent on the measurement signal, a supply of the toner to the developer station is regulated. The supply of the toner to the developer station is increased independent of the measured toner concentration upon an under-run of a minimum value of the toner supply per unit time into the developer station so that the transfer of the toner from the developer station to the intermediate carrier is increased.