Ink ejecting device having ink chambers of differing shapes

Details Ink ejecting device having ink chambers of differing shapes Ink ejecting device having ink chambers of differing shapes

1995-09-19

1999-04-27

Metjahic, Safet

Incremental printing of symbolic information

Ink jet

Ejector mechanism

347 43, B41J 2045

Patent

active

058984488

ABSTRACT:
The effective length of an ink chamber extends from a front end of a manifold to a nozzle plate. Accordingly, the lengths of the manifolds formed in one or more cover plates are different, based on the different types of ink ejected from each ink chamber to change the lengths of the ink chambers. The effective lengths of the ink chambers for differently colored inks, such as cyan, black, yellow and magenta inks, are different. In particular, the effective lengths of the ink chambers in the yellow, magenta, cyan and black ink ejecting devices are different according to the different viscosities of the yellow, magenta, cyan and black inks, so that the volumes of ink droplets ejected from the ink ejecting devices are substantially equal to each other. As a result, the dot diameters of the different types of ink on a sheet of paper are substantially equal to each other, allowing beautiful color images to be formed.

REFERENCES:
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patent: 4380771 (1983-04-01), Takatori
patent: 4723129 (1988-02-01), Endo et al.
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patent: 5410341 (1995-04-01), Sugahara et al.
patent: 5510822 (1996-04-01), Vincent et al.
patent: 5581286 (1996-12-01), Hayes et al.

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