Inkjet printing spray head, inkjet amount measuring system and method and inkjet amount controlling method
AssigneeBoe Technology Group Co., Ltd.
InventorDejiang Zhao
Life of this patent
Estimating the term…
Abstract
An inkjet amount measuring system, an inkjet amount measuring method and an inkjet amount controlling method. The inkjet amount measuring system includes: an inkjet printing spray head; and electricity applying device configured to apply electric charges to ink droplets passing through a nozzle of the inkjet printing spray head; a magnetic field generating device configured to generate a magnetic field to deflect the charged ink droplets; a test board having a surface for carrying ink droplets; and a processor configured to calculate an amount of ink droplets according to positions of falling points of the ink droplets on the surface of the test board, an electric charge amount of the ink droplets, and a magnetic field intensity.
Claims19
An inkjet amount measuring system, comprising:
- an inkjet printing spray head;
- an electricity applying device configured to apply electric charges to ink droplets passing through a nozzle of the inkjet printing spray head;
- a magnetic field generating device configured to generate a magnetic field to deflect the charged ink droplets;
- a test board having a surface for carrying ink droplets;
- and
- a processor configured to calculate an amount of ink droplets according to positions of falling points of the ink droplets on the surface of the test board, an electric charge amount of the ink droplets, and a magnetic field intensity.
An inkjet amount measuring method, comprising:
- applying electric charges to ink droplets passing through a nozzle of an inkjet printing spray head;
- generating a magnetic field and making the charged ink droplets pass through the magnetic field to deflect dripping trajectories of the ink droplets;
- dripping the charged ink droplets onto a surface of a test board and recording falling points of the charged ink droplets;
- and
- calculating an amount of ink droplets according to an electric charge amount of the ink droplets, a magnetic field intensity and positions of falling points of the ink droplets.
An inkjet amount controlling method, comprising:
- applying an inkjet signal corresponding to a predetermined amount of ink droplets to a nozzle of an inkjet printing spray head;
- applying electric charges to ink droplets passing through the nozzle;
- generating a magnetic field and making the charged ink droplets pass through the magnetic field to deflect dripping trajectories of the ink droplets;
- dripping the charged ink droplets onto a surface of a test board and recording falling points of the charged ink droplets;
- calculating an amount of ink droplets according to an electric charge amount of the ink droplets, a magnetic field intensity and positions of falling points of the ink droplets;
- comparing the calculated amount of ink droplets with the predetermined amount of ink droplets, and adjusting the inkjet signal according to a comparison result;
- and
- applying the adjusted inkjet signal to the nozzle to make the ink droplets have the predetermined amount.
Dependencies are inferred from the claim text.