Abstract: An ink cartridge usable with a wide array type printer head includes: an ink cartridge body extending in a lateral direction of a recording medium and having an ink storage space, at least one ink pipe formed at a bottom surface of the ink cartridge body and having at least two inlet ports in fluid communication with the ink storage space, an ink channel in fluid communication with a bottom surface of the at least one ink pipe, and at least one ink discharge port in fluid communication with the ink channel to supply the ink to a printer head. The ink cartridge is capable of increasing ink supply performance and use efficiency of ink absorbed in foam disposed in the ink cartridge body by increasing a local compression of the foam by forming a plurality of ink pipes having a cross-sectional area that is less than or equal to than a cross sectional area of a conventional ink pipe.

Abstract: An inkjet cartridge includes a cartridge body provided with an ink storing space to store ink therein, a lid mounted on an upper portion of the cartridge body to seal the cartridge body, a head chip mounted on a lower portion of the cartridge body to eject the ink stored in the cartridge body, and an elastic member mounted on the cartridge body to absorb an impact transmitted to the head chip. Therefore, an impact applied from an exterior of the cartridge body is blocked and absorbed by the elastic member before the impact is applied to the head chip. As a result, a crack phenomenon of the head chip due to the external impact is fully prevented.

Abstract: An ink cartridge and an inkjet printer using the same. The ink cartridge includes a cartridge case having an ink storing space, negative pressure forming foam inserted into the cartridge case, and a filter pipe installed on a bottom surface of the cartridge case, wherein the bottom surface of the cartridge case is formed to be entirely in contact with a bottom surface of the foam. Thus, a dead space around the filter pipe is minimized or eliminated, therefore solving a problem where the ink would otherwise remain to a certain extent in the dead space. In addition, the air existing in the dead space together with the ink does not affect the ink ejection performance of a head due to expansion and shrinkage of the air to stably maintain the ink ejection performance.

Abstract: An ink cartridge includes ink chambers storing ink, a sealing member sealing the ink chambers provided with ink injection openings injecting ink into the ink chambers and air inflow openings through which the ink chambers communicate with an outside of the ink chambers, a cover member forming air inflow passageways between the air inflow openings and the outside of the ink chambers in cooperation with the sealing member and sealing the ink injection openings, an ink blocking part first blocking the ink from being discharged through the air inflow passageways in cooperation with the air inflow openings, and an ink storage part storing the ink passing through the air inflow openings and the ink blocking part to prevent the ink from being discharged through the air inflow passageways.

Abstract: An ink cartridge for an ink jet printer is provided. The provided ink cartridge has an ink reservoir and a housing for covering the ink reservoir with a negative pressure maintenance unit therebetween, to maintain the inner pressure of the ink reservoir under a negative pressure. Since the negative pressure maintenance unit does not contact ink in the ink reservoir, the negative pressure maintenance unit does not corrode. In addition, the negative pressure maintenance unit is installed between the housing and the ink reservoir while occupying a small space, and thus improving the filling efficiency of ink in the ink reservoir.

Abstract: An ink cartridge includes a main body containing an ink absorbent body at an inside thereof and filled with ink, an ink head chip disposed at a lower portion of the main body to spray the ink onto a printing paper, an ink feeding pipe disposed at an inside of the lower portion of the main body to feed the ink in the main body to the ink head chip, and a pressure rib protruding from a bottom of the main body toward the ink absorbent body by a height higher than the ink feeding pipe to press the ink absorbent body contacting the pressure rib before coming in contact with the ink feeding pipe.

Abstract: An ink cartridge including a container body formed at a lower end of an ink supply pipe and containing ink therein, a porous body disposed inside the container body for containing ink, and a head portion protruding under the container body for having the ink supply pipe formed in a predetermined length and having a head chip supplied with ink from the pipe and spraying the ink on a sheet of paper disposed thereon. The head portion has a groove which is formed by withdrawing a slide core when forming the container body in order to form the ink supply pipe.

Abstract: A multi-chamber ink cartridge for an ink-jet printer, the ink cartridge including a printhead to eject ink droplets on a printing medium; a unitary body comprising: first, second and third ink chambers formed by “T”-shaped vertical walls in the unitary body, and first, second, and third ink channels respectively connected to a lower portion of each of the ink chambers to supply ink to the printhead; and a flexible printed circuit to apply an electrical signal to nozzles of the printhead; wherein the first chamber is disposed perpendicular to the second chamber and the third chamber, and the printhead is disposed on a lower portion of the unitary body which corresponds to the second and third chambers.

Abstract: A cartridge body partitioned into foam chambers and ink chambers and having a first welding part and a second welding part, a lid having a third welding part engaged and welded with the first welding part of the cartridge body and a fourth welding part formed on the bottom thereof in which the second welding part is inserted. Ink heads provided on the bottom of the cartridge body eject ink, and ink filters provided on upper sides of the ink heads to prevent foreign materials or bubbles from flowing in. The first welding part has a first section horizontally protruded in cross-section and a second section vertically protruded to the first section, and the third welding part has a third section vertically protruded, a fourth section horizontally protruded, and a fifth section in a diagonal cross-sectioned shape connecting the third section and the fourth section.

Abstract: An ink-jet cartridge includes a cartridge body forming an ink reservoir, a standpipe coupled to one side of the ink reservoir, a printhead formed under an ink supply passage formed by the standpipe, through which ink from the ink reservoir is ejected onto a printing medium in a droplet shape, and a filter which covers a top portion of the standpipe. The filter is formed in a convex shape protruding toward the printhead. Ink particles and bubbles flowing from the ink reservoir to the printhead are filtered out, bubbles which may flow from the printhead to the ink reservoir, move to edges of the filter, and the ink is smoothly supplied to the printhead.

Abstract: An ink cartridge including an ink storage chamber in which ink is stored, a cover to cover the upper portion of the ink storage chamber and a head to eject ink droplets in the ink storage chamber onto a recording medium, wherein the cover includes an inner cover to cover the upper portion of the ink storage chamber and an outer cover that seals the ink storage chamber and the inner cover, and is positioned at a predetermined distance above the inner cover. Also provided are plates to form zigzag air passages by blocking a space between the inner cover and the outer cover. With the ink cartridge according to the present invention, it is possible to satisfactorily suppress the backward flow of ink contained in an ink storage chamber due to overheating of or careless treatment of the ink cartridge. Even if ink flows backward from the ink storage chamber, it is stored in an ink storage space, thus preventing the clogging of an air passage.

Abstract: An ink cartridge including a foam chamber generating negative pressure, with an air passage formed from an upper end thereof toward a lower end, an ink filter and an ink head. A part of a bottom of the foam chamber slopes down and the foam is disposed inside the foam chamber. An ink chamber storing ink is disposed at one side of the foam chamber and is divided from the foam chamber by a partition having a connecting opening connecting the ink chamber with the foam chamber. A cartridge cover closes upper ends of the ink chamber and foam chamber and has an ink inlet. The air passage is formed vertically and close to the partition and the air passage is disposed to slope such that a lower end thereof inclines toward the partition more than an upper end. Further, it is the connecting opening is formed at a lowest end of the partition and the ink filter is disposed at a position lower than the connecting opening.

Abstract: An ink cartridge, in which an appropriate negative pressure is maintained, includes a foam chamber generating a negative pressure and having foam contained inside, an ink filter and an ink head disposed therein and a lower part partially inclined, an ink chamber, to store ink, formed at one side of the foam chamber and separated from the foam chamber by a partition having an opening to provide a connection to the foam chamber, and a cartridge cover having an ink injection port formed thereon and covering top of the ink chamber and the foam chamber, wherein a lower part of the foam is formed to be larger than an inner shape of the foam chamber so that the foam around the ink filter is more compressed than the foam around the opening. The foam chamber has a lower part having one or more inclines and the lower part of the foam chamber is inclined downward from the opening to the ink filter. A lower part of the foam has one or more inclines.

Abstract: An ink cartridge including at least one first chamber storing an ink, at least one second chamber having an air inflow hole formed at an upper portion thereof to be exposed to an ambient air and an ink supply portion formed at a lower portion thereof and having an ink supply port supplying an ink, the second chamber expanding with a negative pressure generating medium storing the ink, an intermediate partition having a connecting hole defined in a lower portion thereof connecting the first and the second chambers to each other, the intermediate partition dividing the first and the second chamber, and a connecting hole blockage preventing structure formed with respect to the connecting hole, at least preventing the negative pressure generating medium adjacent to the connecting hole from being partially compressed and providing an additional air-liquid transfer space with respect to the connecting hole, to thereby prevent the connecting hole from being blocked with the negative pressure generating medium expand

Abstract: An ink cartridge is provided with a main body divided into an ink chamber filled with ink and a foam chamber receiving an ink absorbent body, an ink head chip disposed at a lower portion of the foam chamber to spray the ink onto a printing paper, a partition forming a passage with a bottom of the main body to pass ink and air therethrough, and dividing an inside of the main body into the ink chamber and foam chamber, and an ink feeding pipe disposed lower than the passage and at a lower portion of the foam chamber to feed the ink in the foam chamber to the ink head chip.

Abstract: An ink cartridge includes a main body containing an ink absorbent body at an inside thereof and filled with ink, an ink head chip disposed at a lower portion of the main body to spray the ink onto a printing paper, an ink feeding pipe disposed at an inside of the lower portion of the main body to feed the ink in the main body to the ink head chip, and a pressure rib protruding from a bottom of the main body toward the ink absorbent body by a height higher than the ink feeding pipe to press the ink absorbent body contacting the pressure rib before coming in contact with the ink feeding pipe.

Abstract: An ink-jet cartridge includes a cartridge body forming an ink reservoir, a standpipe coupled to one side of the ink reservoir, a printhead formed under an ink supply passage formed by the standpipe, through which ink from the ink reservoir is ejected onto a printing medium in a droplet shape, and a filter which covers a top portion of the standpipe. The filter is formed in a convex shape protruding toward the printhead. Ink particles and bubbles flowing from the ink reservoir to the printhead are filtered out, bubbles which may flow from the printhead to the ink reservoir, move to edges of the filter, and the ink is smoothly supplied to the printhead.

Abstract: An ink cartridge includes ink chambers storing ink, a sealing member sealing the ink chambers provided with ink injection openings injecting ink into the ink chambers and air inflow openings through which the ink chambers communicate with an outside of the ink chambers, a cover member forming air inflow passageways between the air inflow openings and the outside of the ink chambers in cooperation with the sealing member and sealing the ink injection openings, an ink blocking part first blocking the ink from being discharged through the air inflow passageways in cooperation with the air inflow openings, and an ink storage part storing the ink passing through the air inflow openings and the ink blocking part to prevent the ink from being discharged through the air inflow passageways.

Abstract: An ink cartridge using separate magnets is provided. The ink cartridge includes an ink container, which includes first and second chambers separated by a vertical partition formed therewithin for containing ink, and a head for ejecting the ink in the ink container onto a printing medium in the form of droplets. The first chamber includes a sponge filling most of the inside of the first chamber, a filter provided on a bottom portion of the sponge, and an ink supply pipe for supplying the ink which has passed through the filter to the head. The second chamber includes a magnet float floating on the ink in the second chamber and including a first magnet in its inside, and a second magnet provided in the bottom surface of the second chamber. The ink cartridge includes a magnet sensor for detecting a magnetic flux having at least a predetermined level when the magnet float contacts the second magnet.

Abstract: An ink cartridge used with an ink jet printer. The ink cartridge has an ink reservoir and a housing to cover the ink reservoir with a negative pressure maintenance unit therebetween to maintain the inner pressure of the ink reservoir under a negative pressure. Since the negative pressure maintenance unit does not contact ink in the ink reservoir, the negative pressure maintenance unit does not corrode. In addition, the negative pressure maintenance unit is installed between the housing and the ink reservoir while occupying a small space, and thus improving the filling efficiency of ink in the ink reservoir.