Droplet ejecting head

Details Droplet ejecting head Droplet ejecting head

2007-11-13

2007-11-13

Luu, Matthew (Department: 2861)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S040000, C347S043000, C347S047000, C347S065000

Reexamination Certificate

active

11156101

ABSTRACT:
A droplet ejecting head including a nozzle plate having nozzle holes each ejecting a droplet and comprising: a jetting end open at a first surface of the plate; an inflow end open at a second surface of the plate; a taper portion between the jetting end and a vicinity of the inflow end, where a diameter of the nozzle hole linearly increases from the jetting end to the vicinity so as to have a taper angle; a connecting portion comprising a surface connecting the taper portion and the inflow end, at the connecting portion the diameter increasing more greatly than at the taper angle; and where D1and D2respectively represent the diameter of the nozzle hole at the inflow end and at an imaginary inflow end obtained if the taper portion extends at the taper angle up to the second surface, D2<D1<1.2×D2.

REFERENCES:
patent: 4587534 (1986-05-01), Saito et al.
patent: 5402159 (1995-03-01), Takahashi et al.
patent: 5971528 (1999-10-01), Yoshimura
patent: 6604817 (2003-08-01), Isono et al.
patent: 59-138471 (1984-08-01), None
patent: 4-341853 (1992-11-01), None
patent: 6-246917 (1994-09-01), None
patent: 11147316 (1999-06-01), None
patent: 2001-246744 (2001-09-01), None

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