Patent ID: 6502932
Filing Date: 2003-01-07
Classification: B41J

Abstract:
A print head device comprising:a print head unit, said print head unit having an ink jet print head, and an ink reception block for receiving supply of ink; an ink cartridge, said ink cartridge being removably mounted in said print head unit, and having an ink delivery block for delivering ink therefrom; and a seal packing having a generally hollow cylindrical shape and arranged between said ink delivery block of said ink cartridge and said ink reception block of said print head unit, said seal packing having: a fitting portion for airtight fit on a peripheral surface of said ink reception block; an intimate contact portion for intimate contact with said ink delivery block; and an intermediate hollow cylindrical portion continuous between said fitting portion and said intimate contact portion, and formed to be smaller in thickness than said fitting portion and said intimate contact portion; wherein said ink reception block has a peripheral surface formed with an annular groove, and wherein said fitting portion has an inner peripheral surface formed with an annular projection for being fitted in said annular groove.