Ink-cartridge for printers

An ink-cartridge for printers comprising:

• a body formed in a predetermined size;
• a filling hole passing through and formed at a top surface of the body so that ink is injected therethrough;
• a filling chamber which is a space where ink is filled in the body, formed by dividing an inner space of the body into a plurality of spaces by a partition formed inside the body, the filling chamber being an inner divided space of the body;
• a connecting hole passing through and formed in the partition so that the filing chambers communicate with each other;
• a discharging chamber formed inside the body and in communication with the filing chamber;
• a discharging port connected to the discharging chamber via an ink transferring channel formed in the body;
• an air chamber connected to the filling chamber via an air transferring channel so as to supply air to the filling chamber;
• an air suction valve installed in the air chamber;
• an air inducing channel inducing external air to the air suction valve;
• a blocking film attached to one surface of an outer wall of the body;
• a cover installed on the other side surface of the body opposite to the one surface of the outer wall of the body having the blocking film attached thereto to thereby block the filling chamber and the discharging chamber;
• and
• a pressure regulating part communicating with the filling chamber through a plurality of communicating ports and having a predetermined space formed by the body and the blocking film.