Ink jet recording head

Details Ink jet recording head Ink jet recording head

2006-02-07

2006-02-07

Shah, Manish S. (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S071000

Reexamination Certificate

active

06994427

ABSTRACT:
The angles and sizes for each of the constituent members of the ink jet recording head is designed to satisfy the following relational expression:in-line-formulae description="In-line Formulae" end="lead"?K0·Na0·Ab0·αc0·Spind0·(Scav/Spin)e0·(Spzt/Scav)f0≦0.in-line-formulae description="In-line Formulae" end="tail"?in which a0=1.87686, b0=0.31786, c0=−0.18649, d0=−1.09273, e0=3.97019, f0=0.93332 and K0=0.05307 are satisfied when N is a number of layers in one of a piezoelectric element, A is a number of active layers in the piezoelectric element, α is an angle [°] which is one of internal angles of virtual lattices containing one of a cavity and forming a matrix and which is not higher than 90°, Spin is an area [mm2] occupied by one lattice in the matrix, Scav is an area [mm2] occupied by the cavity contained in one lattice in the matrix, and Spzt is an area [mm2] occupied by an active portion of the piezoelectric element provided in accordance with one lattice in the matrix.

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