Patent
Liquid jet recording method
TLDR
In this article, the plane structute of a heating element is formed to be a trapezoid and at both ends thereof electrodes 302 and 303 are provided, where the current density at the part A and part B is changed, a difference can be made in the quantity of the heat per unit time in each part.Abstract:
PURPOSE: To enable the gradation recording by getting the heating element of an electrothermal transducer constructed so that it can produce a heat gradient in an ink jet head wherein the change in pressure by thermal energy is utilized. CONSTITUTION: The plane structute of a heating element 301 is formed to be a trapezoid and at both ends thereof electrodes 302 and 303 are provided. When the current density at the part A and part B is changed, a difference can be made in the quantity of the heat per unit time in each part. In addition, by proividing a heat-accumulating layer 403 and a protecting film 406 having a grade in thickness from an electrode 404 toward an electrode 405 on a substrate 401 as shown in the figure of a cross-sectional structure, the grade is also given to the quantity of the heat applied by the surface of a heating element Δl to the liquid contacting with the surface per a unit time. By this gradient in the quantity of the heat, the quantity of air bubbles formed on the contacting surface of the heating element is changed and thereby the quantity of discharged ink can also be changed. COPYRIGHT: (C)1980,JPO&Japioread more
Citations
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Patent
Ink jet printing apparatus and ink jet printing method
Hitoshi Nishikori,Naoji Otsuka,Hitoshi Sugimoto,Kiichiro Takahashi,Osamu Iwasaki,Minoru Teshigawara,Takeshi Yazawa,Toshiyuki Chikuma +7 more
TL;DR: In this article, the arrangement of ejection openings is determined so that between the last scanning for completing the black image and the first scanning for printing of the color image, scanning with no performing printing exists.
Patent
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TL;DR: In this paper, an ink-jet recording head includes a discharge-port portion including a first dischargeport portion continuing from a discharge port, and a second dischargeport part communicating the first discharge port portion with a bubble generation chamber.
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Patent
Thermal jet recording apparatus
Nobumasa Abe,Kiyoharu Momose,Ko Ji Watanabe,Yuichi Nakamura,Tsuneo Handa,Mitsutaka Nishikawa +5 more
TL;DR: A thermal ink jet recording apparatus includes at least a substrate having a gap disposed over an ink reservoir on a base in communication with an ink source, and a film circuit of electrodes and heating elements is formed on each substrate as discussed by the authors.
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A thermal drop-on-demand ink jet print head
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References
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Patent
Liquid jet recording method with variable thermal viscosity modulation
TL;DR: In this article, a liquid jet recording method is proposed, which includes controlling thermal energy quantity to be generated by driving predetermined numbers of heat generating bodies selected in accordance with recording information from a plurality of heat-generating bodies which disposed along a flow path in a liquid chamber communicatively connected with a discharge orifice.
Patent
Ink jet recording device
TL;DR: In this paper, the authors proposed a method to prevent choking of an ink jet nozzle by applying pressure forcibly from the inside of the nozzle to the tip thereof just before recording so as to push out the ink remaining in the tip of the discharge nozzle.
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Non impact dot printer
TL;DR: In this paper, the authors used little drops of jumping ink when little bubbles generated on the surface of ink are burst as a printing mean of dot to make a device safe and simple.
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