Page width print head with a cooling member, and an ink cartridge and inkjet printer with the same

An ink cartridge comprising:

• a cartridge case having a space to store ink therein and extending in a lateral direction of a recording medium;
• an ink ejection head mounted on a bottom surface of the case, having a length corresponding to the lateral direction of the recording medium, and including an ink ejecting member and a nozzle to discharge the ink;
• a plurality of cooling members arranged parallel along a longitudinal direction at a side surface of the ink ejection head, each cooling member being individually operated;
• a plurality of temperature detecting members each to detect a temperature of the region of the head provided with the corresponding cooling member,each temperature detecting member being individually operated;
• and
• an electrical connecting member to electrically connect the cooling members and the head to a controller of a printer main body.

An ink cartridge comprising:

• a cartridge case having a space to store ink therein and extending in a lateral direction of a recording medium;
• a plurality of heads including an ink-feed hole to receive the ink from the cartridge case, an ink channel in fluid communication with the ink-feed hole, a plurality of nozzles in fluid communication with the ink channel, and an ink ejecting member located under the nozzles;
• a plurality of cooling members attached to the heads and individually operated;
• temperature detecting members to detect a temperature of each headland the temperature detecting members being individually operated;
• and
• for a connecting member to electrically connect the cooling members and the heads to a controller of a printer main body,
• wherein head units including the heads and the cooling members are arranged at the cartridge case in one line.

An inkjet printer having a page width head, comprising:

• an ink cartridge including a cartridge case having a space to store ink therein and extending in a lateral direction of a recording medium, a head having a plurality of ink ejecting members and nozzles, at least one cooling member attached at a side surface of the head, and a plurality of temperature detecting members mounted along a longitudinal direction of the head;
• a main body case to fix the ink cartridge;
• and
• a controller electrically connected to the temperature detecting members, the ink ejecting members and the at least one cooling member, detecting the temperature of the ink stored in the head through signals generated by the temperature detecting members, judging whether the head has a temperature higher than a predetermined temperature range, and then applying electric power to the at least one cooling member adjacent to the head based on the judgment.

An ink cartridge, comprising:

• an ink cartridge case including a space to store ink therein;
• a print head that receives ink from the cartridge for printing on a recording medium through a nozzle;
• and
• a cooling member having a first portion on one side of the print head and a second portion on a second side of the print head, the cooling member being able to cool individual portions of the print head based on a temperature level of the individual portions.