# US 4,396,924 A · Recording head for ink mosaic printers

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- Number: US 4,396,924 A
- Document ID: US4396924A
- Status: Granted
- Kind: A
- Application number: 06/206,137
- Filed: 1980-11-12
- Granted: 1983-08-02
- Earliest claimed: 1979-12-10
- Assignees: Siemens Aktiengesellschaft
- Inventors: Gunter Rosenstock
- Web page: https://patentgrep.com/patent/US4396924A

## CPC

- B41J 2/14201: {Structure of print heads with piezoelectric elements}
- B41J 2002/14475: {characterised by nozzle shapes or number of orifices per chamber}
- B41J: TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS

## Abstract

A recording head for ink mosaic printers has a plurality of channels communicating with an ink supply each of which has an individually controllable electro-mechanical transducer operable to eject ink droplets from respective channels and each channel further having at least two nozzle openings through which the ink is ejected toward a carrier medium for achieving a finer pattern of droplets on the carrier medium for improved resolution and adaptability to different types of texts.

## Claims

### Claim 1

A recording head for use in an ink mosaic recording device comprising a plurality of channels in said recording head communicating with an ink supply, said channels terminating at a common face adjacent to a recording medium, an individually operable electro-mechanical transducer associated with each channel for selectively ejecting droplets of ink from said channels, each channel terminating in four nozzle openings disposed at the corner of a rhombus on said face and said nozzle openings being disposed in at least two parallel rows, with a lowest nozzle opening of a rhombus in a first row of nozzle openings and an uppermost nozzle opening of a rhombus in a row parallel thereto being disposed at the same level.