Electrostatic ink-jet printing head having projections extending

Details Electrostatic ink-jet printing head having projections extending Electrostatic ink-jet printing head having projections extending

1997-12-12

2000-10-24

Barlow, John

Incremental printing of symbolic information

Ink jet

Ejector mechanism

B41J 206

Patent

active

061355887

ABSTRACT:
An electrostatic ink-jet printing head in which ink containing charged toner particles in an insulating solvent is supplied from an ink reservoir, an electric field is applied to the ink to generate an electrostatic force, and the electrostatic force causes the toner particles to be ejected from ink ejecting ports. The electrostatic ink-jet printing head comprises a head block including a head block main body which defines an ink chamber and also including a base film which is assembled on the head block main body. The base film has ink ejecting ports and has a plurality of projections extending from one edge of the ejecting port into the ejecting port. The ejecting ports, ejecting electrodes and ejecting projections are collectively formed on a base film by a TAB technique, and by bending the base film at the ejecting ports having projections according to the shape of the head block main body.

REFERENCES:
patent: 4271416 (1981-06-01), Shimizu et al.
patent: 5471233 (1995-11-01), Okamoto et al.
patent: 5539438 (1996-07-01), Maeda

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