Liquid storing container, an ink jet head cartridge and an ink jet recording apparatus

An ink jet head cartridge for discharging an ink, said ink jet head cartridge comprising:

• a recording head unit having a nozzle for discharging the ink therethrough and an energy generating element for causing energy for discharging the ink to act thereon;
• and
• an ink tank unit having a supply port side and provided storing therein ink for use by said recording head unit and having said supply port for supplying said ink outside said ink tank unit to said recording head unit, wherein said ink tank unit includes flow rate control means between said supply port and the inside of said ink tank unit for blocking ink passage to a supply port side of said flow control means from the inside of said ink tank unit, said flow rate control means having a slit closed in a steady state and open for passing ink therethrough when an ink pressure inside said ink tank unit exceeds a pressure at said supply port side of said flow rate control means by a predetermined differential pressure to control the flow rate of said ink supplied from said supply port to the outside, and pressure regulating means at said supply port side of said flow rate control means for releasing pressure at said supply port side.

An ink jet recording apparatus for discharging an ink to thereby effect recording, said ink jet recording apparatus comprising:

• a recording head unit having a discharge port for discharging the ink therethrough and an energy generating element for causing energy for discharging the ink to act thereon;
• an ink tank unit storing therein ink for use by said recording head unit and having a supply port for supplying said ink outside said ink tank unit to said recording head unit, wherein said ink tank unit includes flow rate control means having an interior volume and a liquid supply port side and provided between said supply port and inside of said ink tank unit for blocking ink passage to said supply port side of said flow rate control means from the inside of said ink tank unit, said flow rate control means having a slit closed in a steady state and open for passing ink therethrough when an ink pressure inside said ink tank unit exceeds a pressure at said supply port side of said flow rate control means by a predetermined differential pressure to control the flow rate of said ink from said supply port to the outside, and pressure regulating means at said supply port side of said flow rate control means for releasing pressure at said supply port side and
• conveying means for conveying a recording medium to a location at which ink is discharged by said recording head unit.

A liquid storing container storing a liquid therein and having a supply port for supplying said liquid to the outside of said container, said liquid storing container comprising:

• flow rate control means having an interior volume and liquid supply port side and provided between said supply port and an inside of said container for blocking ink passage to said supply port side of said flow rate control means from the inside of said container said flow rate control means having a slit closed in a steady state and open for passing ink therethrough when a liquid pressure inside said container exceeds a pressure at said supply port side of said flow rate control means by a predetermined differential pressure to control the flow rate of said liquid from said supply port to the outside;
• and
• a regulation wall provided within said interior volume of said flow rate control means and having an outer wall disposed from an inner wall of said flow rate control means at a predetermined gap.

An ink jet head cartridge for discharging an ink, said ink jet head cartridge comprising:

• a recording head unit having a discharge port for discharging the ink therethrough and an energy generating element for causing energy for discharging the ink to act thereon;
• and
• an ink tank unit storing therein ink for use by said recording head unit and having a supply port for supplying said ink outside said ink tank unit to said recording head unit, wherein said ink tank unit includes flow rate control means having an interior volume and a liquid supply port side and provided between said supply port and an inside of said ink tank unit for blocking ink passage to said supply port side of said flow rate control means from the inside of said ink tank unit, said flow rate control means having a slit closed in a steady state and open for passing ink therethrough when an ink pressure inside said ink tank unit exceeds a pressure at said supply port side of said flow rate control means by a predetermined differential pressure to control the flow rate of said ink supplied from said supply port to the outside, and a regulation wall provided within said interior volume of said flow rate control means and having an outer wall disposed from an inner wall of said flow rate control means at a predetermined gap.

A liquid storing container storing a liquid therein and having a supply port for supplying said liquid to the outside of said container, said liquid storing container comprising:

• flow rate control means having a liquid supply port side and provided between said supply port and an inside of said container for blocking liquid passage to said supply port side of said flow rate control means from the inside of said container, said flow rate control means having a slit closed in a steady state and open for passing liquid therethrough when a liquid pressure inside said container exceeds a pressure at said supply port side of said flow rate control means by a predetermined differential pressure to control the flow rate of said liquid from said supply port to the outside;
• and
• an oscillation preventing wall for supplying liquid from a main chamber of said container to said flow rate control means, said oscillation preventing wall being disposed on a side of said flow rate control means opposed to said supply port side.

An ink jet head cartridge for discharging an ink, said ink jet head cartridge comprising:

• a recording head unit having a discharge port for discharging the ink therethrough and an energy generating element for causing energy for discharging the ink to act thereon;
• and
• an ink tank unit storing therein ink for use by said recording head unit and having a supply port for supplying said ink outside said ink tank unit to said recording head unit, wherein said ink tank unit includes flow rate control means having a liquid supply port side and provided between said supply port and an inside of said ink tank unit for blocking ink passage to said supply port side of said flow rate control means from the inside of said ink tank unit, said flow rate control means having a slit closed in a steady state and open for passing ink therethrough when an ink pressure inside said ink tank unit exceeds a pressure at said supply port side of said flow rate control means by a predetermined differential pressure to control the flow rate of said ink supplied from said supply port to the outside, and an oscillation preventing wall for supplying ink from a main tank chamber of said ink tank unit to said flow rate control means, said oscillation preventing wall being disposed on a side of said flow rate control means opposed to said supply port side.