INK CARTRIDGE AND METHOD OF REFILLING INK CARTRIDGE Russian patent published in 2014 - IPC B41J2/175 

FIELD: printing.

SUBSTANCE: method for refilling the liquid according to which the liquid is charged into the used cartridge (1) mounted in an inkjet printing device, comprising: a step of removing the film during which the film (90) on the hole for injection, adhered around the hole (21) for discharging air, which communicates with the inner space of the used cartridge (1), for sealing the hole (21) for discharging air, is removed for opening the hole (21) for discharging air; the liquid injection step during which the liquid is injected into the used cartridge (1) through the hole (21) for discharging air which is opened during the step of puncturing the film on the hole for injection; and a step of re-welding the film of the hole for injection, during which the film is re-welded using a surface different from the surface of the initial welding, for re-sealing the hole (21) for discharging air, through which the liquid is filled during the liquid injection step.

EFFECT: improved design.

4 cl, 20 dwg