Dover Europe Sarl

Markem-imaje Corporation

Markem-imaje Holding

Jean-Pierre Arpin

Francis Pourtier

Florence Odin

Thomas Marzano

Joao Paulo Ribeiro

A method of calibrating an inkjet printer, which comprises a fluid circuit (), a print head () connected to the fluid circuit through an umbilical (), this method comprising at least the following functions: calculate a difference between the viscosity of the ink used in the circuit, and a theoretical viscosity of this ink; as a function of this difference, correct data representative of a characteristic function that relates the pressure at a point referred to as the reference point in the fluid circuit or the print head, the ink density, the ink viscosity, the operating temperature and a velocity referred to as the nominal velocity of the ink jet generated by the print head, to form corrected data for said characteristic function.

Method and device for managing ink quality in an inkjet printer

The invention concerns a method for cleaning an ink circuit of an ink-jet printer, comprising at least one tank (), referred to as the main tank, at least one ink cartridge (), a pump () for pumping the ink from the cartridge, ducts and valves (-) for fluid connection between the ink cartridge and the tank, and control panel () for controlling the printer, the method comprising at least: a step of sending solvent, at a pressure P1, to the cartridge (), by at least a part of the ducts and valves for fluid connection between the ink cartridge () and the tank (), a step of pumping at least a portion of the solvent, sent in step a), towards the main tank ().

Method and device for cleaning and protecting a hydraulic connection

The invention relates to a reservoir lid for a continuous ink jet printer, including a so-called upper surface (), a so-called lower surface (), between which are included an upper part () and a lower part () of the lid, at least the latter being delimited sideways by a peripheral surface (S), and: at least one 1duct (), which passes through at least one part of the lid, for leading a 1fluid from said upper part to said lower part and direct it, at least partly, sideways, to said peripheral surface (S), at least one 1chamber () delimited by an internal surface into which said duct opens and by said peripheral surface (S), and means () for flowing a liquid contained in this chamber along said peripheral surface.

Lid for an ink reservoir with mixing function

A device for continuously measuring a level of an ink in a tank () of a continuous ink-jet (CIJ) printer, including: a first pair of electrodes () and part for connecting this pair of electrodes in series, for measuring the impedance of a first predetermined height of the ink, in the tank, a second pair of electrodes () and part for connecting this second pair of electrodes in series, for measuring a second height of the ink in the tank, this second height being included between this first height and a maximum level; part for calculating the second height, from the resistive components of the 2 impedances measured, independently of the ink conductivity.

Device for measuring a level in a tank

A method of cleaning an ink circuit of an inkjet printer, including at least one reservoir, called the main reservoir, at least one ink cartridge, a first pump to pump ink from the cartridge, a first fluid connection to transfer ink from the ink cartridge to the reservoir, a second pump to pump ink from the reservoir (), a second fluid connection to transfer ink to the ink cartridge, and a controller. The method includes a) a step in which ink is transferred from the main reservoir as far as the cartridge, through the second pump and the second fluid connection, and b) a step to pump at least part of the ink transferred during step a) to the main reservoir.

Method and device for maintenance and protection of a hydraulic connection

A method for determining the quality of a break-off of an ink jet of a CIJ printing machine is disclosed. In one aspect, this method includes: generating a first line of N1 drops, all charged by the charge means, at the same voltage V. Also included is: generating at least one drop G1, charged by the charge means, at a second voltage (VG), followed by at least one drop G, charged by the charge means, at a third voltage (VG) lower than V; generating a second line of N2 drops, all charged by the charge means, at a same voltage V; and measuring, using an electrostatic sensor, the charge variation of a non-deflected jet of drops including at least the first line of drops and the second line of drops, separated by the drops G1 and G2, during the passage of the jet in front of the sensor.

Growing community of inventors

Beaumont-Monteux, France

Jean-Pierre Arpin