Patent ID: 6499828
Filing Date: 2002-12-31
Classification: B41J,Y10S,Y10T

Abstract:
An ink jet head comprising:a plurality of silicon substrates having ejection energy generating elements for generating thermal energy of ejecting ink; an aluminum supporting member having a flat surface which supports said plurality of substrates; a top plate for covering all of said plurality of substrates, said top plate having a plurality of ink ejection outlets through which the ink is ejected and which are arranged at predetermined intervals, and said top plate being coupled with said substrates to form ink flow paths which are arranged at the predetermined intervals and which are in fluid communication with said ejection outlets, respectively, wherein said supporting member has a plurality of recesses in the flat surface supporting the substrates, the recesses being filled with a bonding material to fix the substrates on the flat surface, and a supporting portion, said bonding material being provided only in the recesses so that the substrates are in direct contact with the flat surface; and a spring member having a plurality of urging portions for clamping said top plate against the substrates fixed on said supporting member.