Incremental printing of symbolic information – Ink jet – Ejector mechanism
Patent
1997-12-04
2000-08-29
Barlow, John
Incremental printing of symbolic information
Ink jet
Ejector mechanism
B41J 2045
Patent
active
061097373
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a printer and the manufacturing method and can be suitably applied to a printer and the manufacturing method wherein an ink droplet is emitted from a nozzle according to a recording signal and is recorded on a recording medium such as paper or film.
BACKGROUND ART
Recently, a so-called ink jet printer for recording by emitting an ink droplet and directly fitting it on a recording medium such as paper and a film is rapidly being popularized.
A so-called on-demand printer wherein an ink droplet is emitted according to a recording signal is particularly popularized of these ink jet printers because miniaturization and the reduction of the cost can be realized.
For a method of emitting an ink droplet in the above on-demand printer, various methods are proposed, however, a method of using a piezoelectric element or a method of using an exothermic element is popular. The former is a method of applying pressure to a pressure chamber filled with ink by the deformation of a piezoelectric element and emitting ink. The latter is a method of heating and boiling ink by an exothermic element and emitting ink by the pressure of generated foam.
For the above method of using a piezoelectric element, there are a method of bonding a laminated piezoelectric element formed by laminating three or more piezoelectric elements to a pressure chamber filled with ink via a diaphragm and pressurizing the pressure chamber via the diaphragm by linearly displacing the above laminated piezoelectric element and a method of bonding a piezoelectric element consisting of a single plate or a piezoelectric element in which two or more piezoelectric elements are laminated to a pressure chamber filled with ink via a diaphragm, curving the diaphragm by bimorph effect between the diaphragm and the piezoelectric element by applying voltage to the piezoelectric element and pressurizing the pressure chamber.
Such a printer is provided with a print head with the following structure for example. That is, as shown in FIG. 78, the print head is constituted by a pressure chamber forming part 1101, a diaphragm 1102, a piezoelectric element 1103 and a nozzle forming member 1104.
In the above pressure chamber forming part 1101, a first groove part 1105 forming a liquid supply passage, a second groove part 1106 forming a pressure chamber and a third groove part 1107 forming a liquid supply passage are formed so that they communicate and are open opposite to one main surface 101a. The first groove part 1105 and the third groove part 1107 are formed as grooves with approximately equal depth and the second groove part 1106 is formed as a deeper groove. In the above pressure chamber forming part 1101, a nozzle leading hole 1108 which is pierced from the bottom surface 1107a of the third groove part 1107 to a main surface 110b opposite to one main surface 101a of the pressure chamber forming part 1101 in the direction of thickness is formed.
A diaphragm 1102 is bonded to the side of one main surface 1101a of the above pressure chamber forming part 1101 by an adhesive not shown so that the diaphragm closes the first groove part 1105, the second groove part 1106 and the third groove part 1107, space surrounded by the first groove part 1105 and the diaphragm 1102 functions as a liquid supply passage 1109, space surrounded by the second groove part 1106 and the diaphragm 1102 functions as a pressure chamber 1110 and space surrounded by the third groove part 1107 and the diaphragm 1102 functions as a liquid passage 1111. Therefore, the liquid supply passage 1109, the pressure chamber 1110, the liquid passage 1111 and the nozzle leading hole 1108 are formed so that they communicate.
As an ink supply pipe not shown and connected to an ink tank not shown is attached to the above diaphragm 1102, a through hole not shown and corresponding to the ink supply pipe is made in the diaphragm 1102.
Further, a piezoelectric element 1103 consisting of a single plate is fixed by an adhesive not shown in a position corresponding to t
REFERENCES:
patent: 5521619 (1996-05-01), Suzuki et al.
patent: 5710584 (1998-01-01), Suzuki et al.
patent: 5793394 (1998-08-01), Kato
patent: 5886717 (1999-03-01), Satake et al.
patent: 5900450 (1999-05-01), Tanaka et al.
Patent Abstracts of Japan Application No. 63127561 dated May 25, 1988.
Patent Abstracts of Japan Application No. 05183625 dated Jul. 26, 1993.
Barlow John
Sony Corporation
Stewart Jr. Charles W.
LandOfFree
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