Multicolor ink jet printing method, print head having particular

Details Multicolor ink jet printing method, print head having particular Multicolor ink jet printing method, print head having particular

1992-04-13

1997-11-18

Yockey, David

Incremental printing of symbolic information

Ink jet

Ejector mechanism

347 20, 347 55, 298901, B41J 221, B41J 2015, B41J 206

Patent

active

056892950

DESCRIPTION:

BRIEF SUMMARY
FIELD OF TECHNOLOGY

The invention relates to methods of multicolor jet printing, jet print heads, and modes of their manufacture.


BACKGROUND OF THE INVENTION

Among the recognized methods of multicolor jet printing, optimal quality is secured by that which position an information carrier opposite a group array of ink jet orifices made according to the number of print colors, and forms image (record) elements on the information carrier in the manner of subtraction of colors by propelling ink onto the information carrier through a group orifices selected for printing, onto the zone of every image element (V. S. Nagorni, "Elektrokaplestruinije registrirujuschie ustroistva", 1988, Mashinostrojenije, Leningrad, pp.243-250).
This method is inadequate as the quality of the image obtained largely depends on exactness of respective displacement of the information carrier and ink orifices. Besides, the quality of the image is affected by such external factors as environmental temperature fluctuations and deformation of the carrying frame of the print device on which the orifices and gears for displacement of the information carrier and/or of the orifices et al. are housed. Due to these factors, respective displacement of the orifices and the information carrier goes out of control. Further, the quality of the image rests on precision of manufacture, on movements of the print device elements, and on dimensional changes in gears due to wear and tear.
To perform such a method of multicolor jet printing, different devices are used, e.g., the method described in U.S. Pat. Nos. 4,511,907 and 4,516,139. In these systems, each head is meant for a particular print color, and it commands parallel rows of orifices of the same name. The printing quality (exactness of color adjustment) achieved by the heads depends on manufacturing precision, accurateness of movement and/or displacement synchronization of orifices and/or of the information carrier. This makes the structure of the print device very complex, and causes unstable quality of multicolor printing due to such external factors as voltage oscillation, temperature change and impact of deformations, vibration, etc.
Recognized also is the jet print head comprising a multilaminate structure, an underlay, criss-crossing parallel rows of orifices made by capillary openings (tubes) directed perpendicular to the plane of the underlay, each opening having an electrode that is common for the given row of orifices, and with an individual electrode of opposite polarity positioned on the same plane as of the common electrode. Placed in separate layers of the multilaminate structure is the system of the electric current supply to the electrodes and also the system of ink supply containing feeder channels through which communication is established with inlet orifices (EPA 90900407.9).
This print head is inadequate because it does not provide for simultaneous supply of ink to the adjacent orifices of the head.
The above jet print head is obtained by creating on the underlay the multilaminate structure formed of dielectric layers with the common and individual electrodes, and containing a switch-on-current system for the common and individual electrodes. Organized next are the orifices: in the form of capillary openings that are directed perpendicular to the plane of the underlay, and cross the underlay at points positioned between the common and individual electrodes with criss-crossing parallel rows of orifices arranged. Then feeder channels, through which communication is established with inlet orifices, are made.
The above method is inadequate because it gives no chance to make a head capable of rendering simultaneous supply of ink to the adjacent orifices.


DESCRIPTION OF THE INVENTION

The inventors have performed the task of creating such a method and head for multicolor jet printing by color subtraction and also such a mode of making the jet print head that would provide higher quality and quantity of multicolor printing by propelling ink onto the information carrier through t

REFERENCES:
patent: 4280130 (1981-07-01), Slemmons
patent: 4347522 (1982-08-01), Bahl et al.
patent: 4354197 (1982-10-01), Reitberger
patent: 4511907 (1985-04-01), Fukuchi
patent: 4516139 (1985-05-01), Takiguchi
patent: 4528575 (1985-07-01), Matsuda et al.
patent: 4580148 (1986-04-01), Domoto et al.
patent: 4689694 (1987-08-01), Yoshida
Nagorny V.S. "Elektrokaplestruinye registrirujuschie ustroistva" 1988, Mashinostroenie (Leingrad), pp. 243-250.

Affiliated with

Also associated with

Rating

Multicolor ink jet printing method, print head having particular does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Multicolor ink jet printing method, print head having particular, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multicolor ink jet printing method, print head having particular will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1569157