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Ink jet recording apparatus

An inkjet recording and recording head technology, which is applied to printing devices, inks, coatings, etc., can solve the problems of wrinkles, curling and curling of printed products, and excessive ink ejection, so as to improve ink viscosity and suppress short-term curl effect

Inactive Publication Date: 2006-08-09
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when trying to obtain high-quality images using inkjet technology, in order to solidly print almost the entire surface of the sheet, the amount of ink ejected becomes extremely large, and wavy wrinkles appear in the printed product after image formation, or Curl

Method used

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  • Ink jet recording apparatus
  • Ink jet recording apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] use figure 1 The apparatus of this embodiment shown and plain paper as a specific example of the recording medium P were measured for curl when the amount of ink applied per unit area to the plain paper was 100%. Examples of inks used are shown below.

[0031] Ink 1C.I

[0032]Direct Blue-199 3.5% by weight

[0033] Isopropanol 2.5% by weight

[0034] Hexatriol 27% by weight

[0035] Urea 2% by weight

[0036] acetylenol EH 1% by weight

[0037] Water 64% by weight

[0038] Ink 2C.I

[0039] Direct Blue-199 3.5% by weight

[0040] Isopropanol 2.5% by weight

[0041] Hexatriol 17% by weight

[0042] Urea 10% by weight

[0043] acetylenol EH 1% by weight

[0044] Water 64% by weight

[0045] Ink 3C.I

[0046] Direct Blue-199 3.5% by weight

[0047] Isopropanol 2.5% by weight

[0048] Trimethylolpropane 17% by weight

[0049] Urea 10% by ...

Embodiment 2

[0057] use Figure 5 The device of the above-mentioned device measures the curl when the amount of ink applied per unit area on plain paper as the recording medium P is 100%. As an example of the ink, the ink listed in the above-mentioned Example 1 was used, and the heater was activated when the printing amount of the ink exceeded a predetermined amount.

[0058] As described in Example 1 above, short-term curling tends to occur when the viscosity of the ink decreases. The short-term curl suppression effect is equivalent to that of the recording medium P. The result is not only less short-term lift, but also effective in curbing long-term frizz.

[0059] (Comparative example) As a comparative example with respect to Example 1 and Example 2, the same ink was used and the curl was measured when short-term curl suppression treatment was not performed. At this time, the curl measurement method is as follows: Figure 6 As shown, the amount of warping of the four corners of the ...

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PUM

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Abstract

When an image is formed by imparting aqueous ink discharged from a recording head onto a recording medium P, water content contained in the aqueous ink is evaporated to suppress curl generated in the recording medium P after the image formation by a heater. The aqueous ink contains at least 15% by weight of curl control agent, and the viscosity of the aqueous ink is lower than 4 cp. The viscosity is increased to suppress the curl generation by evaporating the water content contained in the aqueous ink imparted on the recording medium P after the image formation.

Description

technical field [0001] The present invention relates to an inkjet recording device, and more specifically, to an inkjet recording device having a function of suppressing curling of a recording medium after image formation. Background technique [0002] In recent years, inkjet recording devices have spread rapidly due to advantages such as high image quality and low running cost. Sheets used as recording media are not limited to plain paper, but special paper for obtaining prints with the same image quality as photographic or printing techniques is often used. However, when trying to obtain high-quality images using inkjet technology, in order to solidly print almost the entire surface of the sheet, the amount of ink ejected becomes extremely large, and wavy wrinkles appear in the printed product after image formation, or Curling occurs when curling occurs. The above-mentioned curling occurs more significantly especially at the time of high-speed printing or double-sided pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J2/01B41M7/00C09D7/12C09D11/02
CPCB41J11/0005C09D11/38B41J11/002B41J11/0024
Inventor 宇治彩子小板桥规文
Owner CANON KK
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