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Inkjet recording method and inkjet recording device
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An inkjet recording method and inkjet recording technology, which can be used in ink, printing, household appliances, etc., can solve the problems of waterproof film peeling and achieve excellent image effects
Inactive Publication Date: 2016-05-18
RICOH KK
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Problems solved by technology
[0017] However, these proposals have a problem that the waterproof film formed on the surface of the nozzle plate gradually peels off under the influence of wiping
Method used
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Embodiment 1
[0312]
[0313] -Dispersion Production Example 1: Preparation of Cyan Dispersion-
[0314] A 1L flask equipped with a mechanical stirrer, thermometer, nitrogen inlet tube, reflux tube and dropping funnel-has been fully purged with nitrogen-filled with styrene (11.2g), acrylic acid (2.8g), methacrylic acid laurel Acid ester (12.0g), polyethylene glycol methacrylate (4.0g), styrene macromonomer (4.0g) (manufactured by TOAGOSEICO., LTD., product name: AS-6) and mercaptoethanol ( 0.4g), then heated to 65°C. Next, styrene (100.8g), acrylic acid (25.2g), lauric methacrylate (108.0g), polyethylene glycol methacrylate (36.0g), hydroxyethyl methacrylate (60.0g) ), styrene macromonomer (36.0g) (manufactured by TOAGOSEICO., LTD., product name: AS-6), mercaptoethanol (3.6g), azobis(methylvaleronitrile) (2.4g) and The mixed solution of methyl ethyl ketone (18 g) was added dropwise to the flask over 2.5 hours.
[0315] Thereafter, a mixed solution of azobis(methylvaleronitrile) (0.8 g) and me...
Embodiment 2
[0320] -Dispersion Production Example 2: Magenta Dispersion-
[0321] A magenta polymer particle dispersion was obtained in the same manner as in Dispersion Production Example 1, except that the copper phthalocyanine pigment was changed to Pigment Red 122. The polymer particles were found to have an average particle diameter (D50%) of 124 nm as measured by MICROTRACUPA (manufactured by NIKKISOCO., LTD.).
Embodiment 3
[0322] -Dispersion Production Example 3: Yellow Dispersion-
[0323] A yellow polymer particle dispersion was obtained in the same manner as in Dispersion Production Example 1, except that the copper phthalocyanine pigment was changed to Pigment Yellow 74. The polymer particles were found to have an average particle diameter (D50%) of 78 nm as measured by MICROTRACUPA (manufactured by NIKKISOCO., LTD.).
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Abstract
An inkjet recording method performed by inkjet recording device including nozzle plate with nozzle to eject droplets of ink; recording head including liquid chamber with which the nozzle is in communication, and pressure-generating unit configured to generate pressure in the liquid chamber; and signal-generating unit configured to generate signal applied to the pressure-generating unit, and allowing the droplets of ink to eject by pressure generated by the pressure-generating unit according to the signal, wherein the ink has static surface tension of 18.0mN / m to 27.0mN / m at 25 DEG, the ink has receding contact angle on the nozzle plate of 50 DEG or more, the signal has two-step pull pulse for pulling the ink into the nozzle in two-step manner within one printing unit cycle, and the method includes pulling the ink located in proximity to nozzle outlet into the nozzle of the two-step pull pulse, to form meniscus at predetermined position.
Description
Technical field [0001] The present invention relates to an inkjet recording method and an inkjet recording device. Background technique [0002] The inkjet recording system is a recording system in which ink droplets are ejected from very tiny nozzles to deposit on a recording medium to thereby form characters or images. This system has recently been widely used because it is easier to form color images than other recording systems, and even high-resolution images can be obtained with a device with a simple configuration. [0003] The inks used in inkjet recording systems require different properties. Specifically, the ejection stability after ejecting ink from a print head is an important factor in determining image quality. [0004] The ink composition used in the inkjet recording system usually contains a colorant, a humectant and water. Conventionally, water-soluble dyes have been used as colorants in inkjet recording systems from the viewpoints of high image quality, a wide r...
Claims
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Application Information
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