Inkjet cartridge and method of fabricating the same

A method of fabricating an inkjet cartridge, comprising:

• preparing a cartridge body having a head attached thereto, and a flexible printed circuit board having a conductive trace;
• locally surface-treating a surface treatment portion of the flexible printed circuit board;
• electrically connecting the conductive trace to pads as electrical input and output terminals of the head at the electrical connection portion;
• and
• applying a sealant to the surface treatment portion and the electrical connection portion.

A method of a flexible printed circuit board of an inkjet cartridge, comprising:

• preparing a mask having an opening of a predetermined size, and a flexible printed circuit board having a conductive trace disposed therein;
• disposing the mask above the flexible printed circuit board;
• and
• irradiating an ion beam toward the flexible printed circuit board from an upper side of the mask to locally surface treat a portion of the flexible printed circuit board aligned with the opening of the mask.

A method of an inkjet cartridge, the method comprising:

• forming a head on a cartridge body;
• forming a flexible printed circuit board having a surface treated portion and a non surface treated portion on the cartridge body;
• and
• forming a sealant on the surface treated portion of the flexible printed circuit board and a portion of the head.