Yamaha Corporation

Koji Toda

Kunimasa Muroi

Masao Noro

Akira Sogo

Michio Miura

Hideaki Tsubakida

An electro-coagulation printer uses an electrode control unit to drive electrodes which are aligned in proximity to a rotation drum having a conductive ink film on its surface. The electrodes are respectively electrified to partially coagulate the conductive ink film to form ink dots on the surface of the rotation drum, so that the ink dots are transferred onto a paper. Herein, the electrode control unit receives print data from a host device by way of an interface. Gradation data representing gradation values for one line of the electrodes are created based on the print data and are output in a serial manner. The serial gradation data are converted to parallel data corresponding to the gradation values, which are held and controlled in output timing. Based on the gradation values, pulse signals are generated to drive the electrodes respectively.

Method and apparatus for electro-coagulation printing and electrode control unit

In a printing apparatus for forming a desired image by coagulating a portion of liquid ink in a predetermined space S formed between a circumferential surface of a rotation drum and a plurality of negative electrodes by electrical energizing, and transferring this to a printing object such as paper, to thereby affect printing, there is provided on a rotation input side of the plurality of negative electrodes a discharge port whereby a fluid can be discharged towards the negative electrode surface and the surroundings thereof. Moreover, there is provided a fluid supply device for supplying a fluid (which may be a liquid or a gas) to the discharge port.

Printing apparatus and printing method therefor

An electro-coagulation printer is basically constructed by a rotation drum having a circumferential surface which is electrified in positive potential, a number of electrodes which are selectively electrified in negative potentials, and an ink supply device. The electrodes are aligned to oppositely face with the circumferential surface of the rotation drum with a gap which ranges between thirty and one-hundred microns. The ink supply device is arranged in an incoming side of the rotation drum and supplies liquid ink to be injected onto the circumferential surface of the rotation drum, so that electrification is performed between the electrodes and circumferential surface of the rotation drum with intervention of the liquid ink. Thus, a desired image is formed on the circumferential surface of the rotation drum and is transferred onto a printing material such as a paper. In order to prevent the liquid ink from being stuck to surfaces and peripheral portions of the electrodes, electrolyte containing substantially no coagulating components is supplied to the electrodes. Namely, an ink film thickness regulation roller is provided to regulate the liquid ink to a prescribed thickness (T1) which is smaller than the gap, while a gap of a remaining thickness (T2) is filled with the electrolyte. Thus, electrification is performed in such a manner that the liquid ink having the prescribed thickness is placed on the circumferential surface of the rotation drum, while the electrolyte is placed in contact with the electrodes, wherein the liquid ink and electrolyte are arranged in different phases.

Electro-coagulation printer

A fine pitch electrode is provided in which fine electrode lines are disposed at even intervals and with high precision, and which has improved productivity and quality. The fine-pitch electrode,comprises a plurality of fine electrode lines,, each of which is coated around its periphery with a coating film which is made of an electrical insulator, and a sealing member,in which a plurality of the fine electrode lines,are disposed on a plane and which is molded so as to incorporate the fine electrode lines

Fine-pitch electrode, process for producing the same, and fine-pitch electrode unit

In construction of a ski boot having a rearcuff turnably mounted to a shell via pivots and an instep pad for pressing an wearer's foot being pulled by a tensioner on the rearcuff via a wire, the wire extends in engagement with a seat located upwards and rearwards of the pivot, thereby concurrently sufficing two major functional demands for a ski boot.

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Hamamatsu, Japan

Koji Toda