Ink jet recording head and ink jet recorder

An ink-jet recording head, comprising:

• a plurality of pressure generating chambers arranged at a predetermined pitch in at least one column for pressurizing ink by pressurizing means;
• a nozzle plate in which a plurality of nozzle apertures, each of which communicates with a respective one of the pressure generating chambers, are formed, and
• at least one protective layer formed in predetermined shape in a vicinity of at least one of said nozzle apertures, so that a part of a blade for cleaning the nozzle apertures of leavings of at least the ink, which comes in contact with said nozzle apertures when the blade is pressed on said nozzle plate, contacts the protective layer, and the blade moves in a direction of an open exhaust port disposed on a side of an end of said nozzle plate, such that the leavings are exhausted through the open exhaust port by movement of the blade;
• wherein said protective layer is formed discretely approximately in parallel with a path on which the blade is moved and between said nozzle apertures at a pitch longer than a pitch between adjacent nozzle apertures.

An ink-jet recording apparatus comprising:

• an ink-jet recording head comprising:
• a blade for cleaning including an elastic member,
• a plurality of pressure generating chambers arranged at a predetermined pitch in at least one column for pressurizing ink by pressurizing means, and
• a nozzle plate in which a plurality of nozzle apertures, a respective one of which communicates with each of said pressure generating chambers, are formed, and
• at least one protective layer formed in a predetermined shape in a vicinity of at least one of said nozzle apertures, so that a part of said blade comes in contact with said respective one of said nozzle apertures when said blade is pressed on said nozzle plate, contacts the protective layer, and the blade moves in a direction of an open exhaust port disposed on a side of an end of said nozzle plate in the protective layer along a nozzle plate surface, and
• wherein said blade elastically contacts the protective layer and said nozzle plate on a path on which said recording head is moved during cleaning to remove leavings of at least the ink, and the leavings are exhausted through the open exhaust port in the protective layer along the nozzle plate surface, by movement of the blade.

An inkjet recording apparatus, comprising:

• an ink-jet recording head comprising:
• a blade for cleaning including an elastic member,
• a plurality of pressure generating chambers arranged at a predetermined pitch in at least one column for pressurizing ink by pressurizing means, and
• a nozzle plate in which a plurality of nozzle apertures, a respective one of which communicates with each of said pressure generating chambers, are formed, and
• at least one protective layer formed in a predetermined shape in a vicinity of at least one of said nozzle apertures, so that a part of said blade comes in contact with said respective one of said nozzle apertures when said blade is pressed on said nozzle plate, contacts the protective layer, and the blade moves in a direction of an open exhaust port disposed on a side of an end of said nozzle plate, and
• wherein said blade elastically contacts the protective layer and said nozzle plate on a path on which said recording head is moved during cleaning to remove leavings of at least the ink, and the leavings are exhausted through the open exhaust port by movement of the blade;
• wherein said blade is provided with a gradient to a perpendicular to said path on which said blade is moved.