JP2003118090A - Fixing belt, fixing roller, their manufacturing method, image fixing unit employing them, and fixing method for ink jet image - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fixing belt having no offset and a fixing roller in which a fixed image exhibits good gloss while preventing a film from being stripped from a fixing member at the time of thermal fixing, their manufacturing method, an image fixing unit, and a fixing method of ink jet image. SOLUTION: The fixing belt for thermally fixing an ink jet image formed on an ink jet recording medium comprises a basic material and a surface layer touching the ink jet recording medium. The surface layer is formed by dip coating the basic material with curing silicon and then thermally curing the curing silicon. The surface layer exhibits a stripping force not lower than 30 g/5 cm.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixing belt, a fixing roller, a manufacturing method thereof, an image fixing device using the same, and an inkjet image fixing method.

[0002]

2. Description of the Related Art Ink jet recording is a technique for ejecting minute droplets of ink to adhere to a recording material by various operating principles to record images, characters, etc., but at relatively high speed, low noise, and multicolor. It has the advantage of being easy to implement.

Further, due to recent technological advances, pigment inks using pigments having good light resistance as colorants have been attracting attention as inks for applications requiring images resistant to fading by light.

Since the pigment is insoluble in the solvent and the dye molecule forms particles and contributes to coloring in the state of being dispersed in the solvent, even if the surface molecule is destroyed by photochemical reaction or the like, the lower part Since it has a new dye molecule layer, it is characterized by a small decrease in apparent coloring power and excellent image storability.

However, there is a problem that it is difficult to obtain a glossy image due to the influence of scattered light and reflected light due to the pigment particles even after the image fixing process.

In Japanese Patent Laid-Open No. 11-208097,
A technique is disclosed in which a recording material whose outermost layer is a thermoplastic resin layer is recorded with a pigment ink containing no dispersant, and then the pigment particles are moved into the thermoplastic resin layer. After the pigment ink is attached to the surface of the recording material, the pigment particles are present on the surface of the thermoplastic resin layer, and the solvent component is absorbed by each layer constituting the recording material. Subsequently, by moving the pigment particles into the thermoplastic resin layer, the floating of the printed portion, which is peculiar to the pigment ink, to the unprinted portion was eliminated, and the effect of improving gloss due to improvement of smoothness was confirmed.

However, if the embedding of the pigment ink in the thermoplastic resin layer is halfway, image-like unevenness is generated in the printed portion and the unprinted portion, and a difference in gloss is likely to occur. If the embedding of
Although the smoothness of the image surface is improved and the difference in gloss between the printed portion and the unprinted portion is eliminated, there is a problem in that sufficient characteristics cannot be obtained in terms of glossiness.

Further, in Japanese Patent Laid-Open No. 2000-103044,
As a drying means for drying the ink ejected on the recording material, a heating roller and a pressure roller arranged opposite to the heating roller are disclosed. However, this technique surely makes the ink rise flat. As compared with the conventional image forming apparatus, although the ink has gloss, it cannot be said to have sufficient gloss, and there is a problem that the peeling property between the heating roller and the pigment ink is insufficient.

Japanese Patent Laid-Open No. 2000-1512 discloses an image forming section for forming an image on a printed material using ink in order to output an image having high glossiness without using a specific recording paper and ink. An image output device is disclosed that includes a pressurizing unit for pressurizing a printing material on which an image is formed by the image forming unit.

In this image output device, a silicone rubber whose surface is coated with fluorine is disclosed as a fixing device. However, the gloss of the formed image is not sufficient, and the peeling property between the roller and the pigment ink is not sufficient. There was a problem that it was insufficient.

In an image forming apparatus utilizing an electrophotographic process such as an electrophotographic copying machine or an electrophotographic printer, a toner image transferred from a surface of a photoconductor to a transfer material such as copy paper is fixed to the transfer material. There is a need. As a method of fixing the toner image, a method of passing a copy paper between a heating roller and a pressure roller, which are rotating in pressure contact with each other, and heat-fusing the toner image on the copy paper to fix the toner image is widely adopted. There is.

In this method, since the contact width between the fixing roller and the copy paper is small due to the curvature of the rollers, the copy paper is separated from the fixing roller in a short time, and the toner on the copy paper leaves the roller surface at a high temperature. In particular, full-color toners have a low melting point and thus are easily offset, and the toner surface is rough, so that the toner image is not sufficiently mirror-finished and it is difficult to obtain a glossy image. There was a problem.

Further, conventionally, silicone oil is applied to the surface of the fixing roller to prevent offset, but the apparatus is complicated because it requires an apparatus for applying silicone oil. There is a problem.
Furthermore, when copying the original to OHP film,
It has also been pointed out that the film is contaminated with silicone oil.

Therefore, in Japanese Patent Laid-Open No. 5-265337,
Disclosed is a fixing belt comprising at least a base material and a surface layer formed on the surface thereof, wherein the surface layer comprises a silicone resin.

However, although the fixing belt described above is effective in improving the glossiness of a full-color toner image, the effect of improving the glossiness of an ink jet recording image is insufficient, and the surface layer film on the fixing belt is not effective. There was a problem that peeling was likely to occur.

[0016]

SUMMARY OF THE INVENTION An object of the present invention is to provide a fixing belt which has good gloss of an image after fixing, does not peel off a film of a fixing member during heat fixing, and has no offset.
To provide a fixing roller, a manufacturing method thereof, an image fixing device, and an image forming method.

[0017]

The above objects of the present invention have been achieved by the following constitutions.

1. A fixing belt for heating and fixing an inkjet image formed on an inkjet recording medium, wherein the fixing belt has a substrate and a surface layer in contact with the inkjet recording medium, and the surface layer dips a curable silicone. A fixing belt formed by heating and curing the curable silicone after application, and having a peeling force of the surface layer of 30 g / 5 cm or more.

2. A fixing belt for heating and fixing an inkjet image formed on an inkjet recording medium, wherein the fixing belt has a substrate and a surface layer in contact with the inkjet recording medium, and the surface layer dips a curable silicone. A fixing belt, which is formed by heating and curing the curable silicone after application, and wherein the surface layer has a pencil hardness of HB or higher.

3. A heating roller having a base material A and a pressure roller having a base material B facing each other are provided, and an inkjet recording medium on which an inkjet image is formed is passed between the heating roller and the pressure roller. ,
A fixing roller for inkjet heat fixing for fixing the inkjet image, wherein the heating roller or the pressure roller has a surface layer in contact with an inkjet recording medium, and the surface layer comprises a curable silicone on the substrate. Is formed by heat-curing the curable silicone after dip coating or bead coating using a circular slide hopper, and the peeling force of the surface layer is 30 g / 5c.
A fixing roller characterized by having a length of m or more.

4. A heating roller having a base material A and a pressure roller having a base material B facing each other are provided, and an inkjet recording medium on which an inkjet image is formed is passed between the heating roller and the pressure roller. ,
A fixing roller for inkjet heat fixing for fixing the inkjet image, wherein the heating roller or the pressure roller has a surface layer in contact with an inkjet recording medium, and the surface layer comprises a curable silicone on the substrate. A fixing roller formed by dip coating or bead coating using a circular slide hopper, followed by heat curing of the curable silicone, wherein the surface layer has a pencil hardness of HB or higher.

5. An inkjet recording medium having a heating unit, a pressure unit, and the fixing belt described in 1 or 2 above, on which an inkjet image is formed, and the inkjet recording medium between the heating unit and the pressure unit. An image fixing apparatus, wherein the inkjet image is fixed by passing the fixing belt in a state of being opposed to each other.

6. An image fixing device comprising the fixing roller described in the item 3 or 4.

7. In a method for manufacturing a fixing belt for inkjet fixing of an inkjet image formed on an inkjet recording medium, a step of dip-coating a curable silicone on a substrate and heating and curing the curable silicone to give a peeling force of 3
And a step of forming a surface layer of 0 g / 5 cm or more.

8. A method of manufacturing a fixing belt for heating and fixing an inkjet image formed on an inkjet recording medium, in which a step of dip-coating a curable silicone on a substrate and a step of heat-curing the curable silicone and having a pencil hardness of HB or more. And a step of forming a layer.

9. A heating roller having a base material A and a pressure roller having a base material B facing each other are provided, and an inkjet recording medium on which an inkjet image is formed is passed between the heating roller and the pressure roller. ,
In the method for producing a fixing roller for inkjet heat fixing for fixing the inkjet image, a step of dip-coating a curable silicone on the base material A or the base material B and heat curing the curable silicone, and a peeling force of 30 g / 5
and a step of forming a surface layer having a thickness of at least cm.

10. A heating roller having a base material A and a pressure roller having a base material B facing each other are provided, and an inkjet recording medium on which an inkjet image is formed is passed between the heating roller and the pressure roller. In the method of manufacturing a fixing roller for inkjet heat fixing for fixing the inkjet image, a step of dip-coating a curable silicone on the base material A or the base material B, and heat curing the curable silicone to have a pencil hardness of HB.
A method of manufacturing a fixing roller, comprising: the step of forming the surface layer described above.

11. A method for fixing an inkjet image formed on an inkjet recording medium by using a heating unit, a pressure unit, and the fixing belt according to the item 1 or 2, wherein the inkjet is provided between the heating unit and the pressure unit. A method for fixing an inkjet image, comprising a step of passing a recording medium and the fixing belt in a state of being opposed to each other.

12. In a fixing belt for fixing, a recording material and a fixing belt having at least a releasing layer on a substrate are passed between the heating means and the pressing means while facing each other. A fixing belt, wherein the release layer contains a silicone resin, and the release force of the release layer is 30 g / 5 cm or more.

13. In a fixing belt for fixing, a recording material and a fixing belt having at least a releasing layer on a substrate are passed between the heating means and the pressing means while facing each other. The surface of the fixing belt that comes into contact with the recording material has a primer layer on the base material and the release layer on the primer layer, and the release layer contains a silicone resin. A fixing belt characterized in that

14. In a fixing belt for fixing, a recording material and a fixing belt having at least a releasing layer on a substrate are passed between the heating means and the pressing means while facing each other. A fixing belt, wherein the release layer contains a silicone resin formed by dip-coating the curable silicone on the substrate and then heat-curing the curable silicone.

15. In the fixing belt for fixing, the recording material and the releasing layer of the fixing belt having at least a releasing layer on the base material are passed between the heating means and the pressing means while facing each other. A fixing belt, which is a seamless nickel belt, wherein the release layer contains a silicone resin.

16. The surface contact angle of the release layer is 100 ° to 1
The fixing belt according to any one of 12 to 15 above, wherein the fixing belt has an angle of 20 °.

17. 17. The fixing belt according to any one of 12 to 16 above, wherein the surface roughness of the release layer is 0.2 μm or less.

18. 18. The fixing belt according to any one of 12 to 17, wherein the release layer has a thickness of 1 μm to 50 μm.

19. 19. The fixing belt according to any one of 12 to 18, wherein the surface roughness of the base material is 0.1 μm or less.

20. The thickness of the base material is 10 μm to 100 μm
20. The fixing belt according to any one of 12 to 19 above.

21. Young's modulus of base material is 50 kN / mm ²
21. The fixing belt according to any one of 12 to 20 above.

22. 22. The fixing belt according to any one of the above items 12 to 21, wherein the silicone resin is formed by applying a solvent-added silicone or a solvent-condensed silicone, followed by curing by heating.

23. Heating roller having base material A and base material B
A heating roller or a pressure roller which is in contact with the recording material in a fixing roller for fixing the recording material by passing the recording material between the heating roller and the pressure roller. The surface of the fixing roller has a release layer containing a silicone resin.

24. The surface contact angle of the release layer is 100 ° to 1
24. The fixing roller described in 23 above, wherein the fixing roller has an angle of 20 °.

25. 25. The fixing roller as described in 23 or 24 above, wherein the surface roughness of the release layer is 0.2 μm or less.

26. 26. The fixing roller according to any one of 23 to 25, wherein the release layer has a thickness of 1 μm to 50 μm.

27. 27. The fixing roller as described in any one of 23 to 26 above, wherein the surface roughness of the base material A of the heating roller or the base material B of the pressure roller is 0.1 μm or less.

28. 28. The fixing roller according to any one of 23 to 27, wherein the base material A of the heating roller or the base material B of the pressure roller has a thickness of 10 μm to 100 μm.

29. 29. The fixing roller according to any one of the items 23 to 28, wherein the Young's modulus of the base material A of the heating roller or the base material B of the pressure roller is 50 kN / mm ² or more.

30. 30. The fixing roller according to any one of the items 23 to 29, wherein the silicone resin is formed by applying a solvent addition type silicone or a solvent condensation type silicone and then heating and curing the same.

31. 23. In manufacturing the fixing belt according to any one of 12 to 22, after the curable silicone is dip-coated on the base material or the primer layer of the fixing belt, the curable silicone is heated and cured to release the mold. A method of manufacturing a fixing belt, comprising a step of forming a layer.

32. 31. In manufacturing the fixing roller described in any one of the items 23 to 30, a curable silicone is dip-coated on the surface of a heating roller or a pressure roller that comes into contact with a recording material and then cured by heating to form a release layer. A method of manufacturing a fixing roller, comprising:

33. 23. A heat fixing device comprising the fixing belt according to any one of 12 to 22 or the fixing roller according to any one of 23 to 30.

34. A recording material on which printing is performed by ejecting ink is subjected to a fixing process by using the fixing belt according to any one of 12 to 22 or the fixing roller according to any one of 23 to 30. A heat fixing device characterized by:

35. 35. The heat fixing device as described in 34 above, wherein the ink is a pigment ink.

36. 36. The heat fixing device as described in 34 or 35 above, wherein the recording material has a surface layer containing thermoplastic resin particles and an ink absorbing layer containing inorganic fine particles adjacent to the surface layer.

37. 37. An image forming method, wherein a recording material on which ink is ejected for printing is fixed by using the heating and fixing device according to any one of 33 to 36.

38. 38. The image forming method as described in 37 above, wherein the ink is a pigment ink.

39. 39. The image forming method as described in 37 or 38 above, wherein the recording material has a surface layer containing thermoplastic resin particles, and an ink absorbing layer containing inorganic fine particles adjacent to the surface layer.

[0057]

BEST MODE FOR CARRYING OUT THE INVENTION Regarding one embodiment of the present invention,
The fixing belt will be described with reference to FIG. 1, and the fixing roller will be described with reference to FIG.

FIG. 1 is a schematic configuration diagram showing an example of an ink jet recording apparatus used in the present invention. In FIG. 1, the recording material 1 sent out from the conveying roller pair 21 is subjected to inkjet recording by the recording head 3 and is appropriately cut by the cutter 61, and the first roller pair and the second roller pair have a bend. Then, it is sent to the heat fixing unit 4, and is passed together with the fixing belt 44 between the heating roller 41 having the heating element 43 inside and the pressure roller 42, so that the heat fixing process is performed.

Although not shown, a surface layer is provided on the surface of the above-mentioned fixing belt which is in contact with the recording material 1, and the surface layer contains the silicone resin according to the present invention. .

FIG. 2 is a schematic configuration diagram showing another example of the ink jet recording apparatus used in the present invention. In FIG. 2, the recording material 1 sent out from the conveying roller pair 21.
Is subjected to ink jet recording by the recording head 3, appropriately cut by a cutter 61, conveyed in a state with a bend from the first roller pair to the second roller pair, and then sent to the heat fixing means 4 and internally. The heating and fixing process is performed by passing between the heating roller 41 having the heating element 43 and the pressure roller 42.

Although not shown, the surface of the heating roller described above is provided with a surface layer, and the surface layer contains the silicone resin according to the present invention.

The effect described in the present invention, that is, the gloss of the image after image formation is good, there is no film peeling of the surface layer provided on the fixing belt and the fixing roller during fixing, and
In order to reduce the occurrence of offset at the time of fixing, the configurations shown in (1) to (4) below are preferably used.

(1) The surface of each of the fixing belt and the fixing roller, which comes into contact with the recording material, has a surface layer containing a silicone resin, and the peeling force of the surface layer is adjusted to 30 g / 5 cm or more. Yes, but preferably 30g / 5cm
To 1000 g / 5 cm, and particularly preferably,
It is 50 g / 5 cm to 600 g / 5 cm.

Here, the peeling force of the surface layer is measured by the method described below. << Peeling Force Measuring Method for Surface Layer >> In the case of the fixing belt as shown in FIG. 1, the surface layer of the fixing belt, and in the case of the fixing roller as shown in FIG. 2, the surface of the heating roller or the pressure roller. Adhesive tape (Knit-polyester tape No. 31B (manufactured by Nitto Denko Corp.)) was attached to the layer, and the pressure value of the pressure roller was set to 2 kg.
After performing a pressure-bonding operation for rotation and then leaving the fixing belt or the fixing roller at room temperature for 20 hours, the pressure-sensitive adhesive tape was subjected to a 180 ° angle and a speed condition of 0.3 m / min using a commercially available tensile tester. The peel force was measured.

However, when a surface layer was provided on both the heating roller and the pressure roller of the fixing roller, the peeling force of the surface layer on the side in contact with the recording material was measured.

(2) The surface of each of the fixing belt and the fixing roller that comes into contact with the recording material has a surface layer containing a silicone resin, and the pencil hardness of the surface layer is adjusted to be HB or higher. , Preferably H to 5H, more preferably 2H to 5H.

Here, the pencil hardness of the surface layer is measured by the method described below. << Pencil Hardness Measuring Method for Surface Layer >> Here, the pencil hardness of the surface layer was measured according to JIS K5401. In the evaluation, the pencil is uni (manufactured by Mitsubishi Pencil Co., Ltd.)
As a measuring device, a coating test is used.
er Industries. Co. , Ltd. Pencil Scratch Tester No. 850 is used to draw a pencil while applying a load to test whether the coating film is scratched or not to determine hardness.

In the present invention, the load is 9.8 N (1 k
g), pulling 5 times at an angle of 45 degrees, the film surface breakage of the surface layer is 2
When it is recognized more than once, it is tested again with a pencil having a one-step pencil symbol, and the symbol of the pencil when the film surface breakage is less than two times is defined as the pencil scratch value. For example, when a scratch having a hardness of 5H is scratched five times and film surface breakage is recognized twice or more, and when the film surface breakage is less than 2 times at 4H, the pencil hardness of the surface layer is 4H.

(3) A fixing belt or fixing roller having a structure in which a primer layer is provided on a substrate and a surface layer is provided on the primer layer.

(4) A fixing belt having a constitution in which a curable silicone is dip-coated on a substrate and then the curable silicone is cured by heating to form a surface layer containing a silicone resin.

(5) A fixing belt having a constitution in which a seamless nickel belt is used as a base material and a surface layer containing a silicone resin is formed on the seamless nickel belt.

The silicone resin according to the present invention will be described. The silicone resin according to the present invention is produced using a curable silicone such as an addition curable silicone or a condensation curable silicone as described below, which has a surface layer peeling force of 30 g / 5 cm or more as described above. The above-mentioned silicone resin is preferable, and among them, the silicone resin produced by using addition-curable silicone is preferable.

Further, from the viewpoint of reducing the fluctuation of glossiness during image formation and obtaining the effect of preventing film peeling of the surface layer during fixing, the silicone resin according to the present invention has a pencil hardness of the surface layer of HB or more. The pencil hardness is more preferably in the range of H to 5H, particularly preferably in the range of 2H to 5H.

The addition-curable silicone described above comprises a linear methylvinylpolysiloxane having a vinyl group at both ends, or both ends and a chain, and methylhydrogenpolysiloxane in the presence of a platinum catalyst. Obtained by reacting.

Specific examples of the addition-curable silicone include:
For example, KS-887 and KS-7 manufactured by Shin-Etsu Silicone Co., Ltd.
79H, KS-778, KS-835, X-62-24
56, X-62-2494, X-62-2461, KS
-3650, KS-3655, KS-3600, KS-
847, KS-770, KS-770L, KS-776
A, KS-856, KS-775, KS-830, KS
-830E, KS-839, X-62-2404, X-
62-2405, KS-3702, X-62-223
2, KS-3503, KS-3502, KS-370
3, KS-5508 and the like.

Specific examples of the condensation-curable silicone include:
For example, KS-881 and KS-8 manufactured by Shin-Etsu Silicone Co., Ltd.
82, KS-883, X-62-9490, X-62-
It is preferable to use silicone such as 9028, but among them, KS-881, KS-882, KS-883, X
Heavy release silicones for release paper such as -62-9490 and X-62-9028 are preferably used.

The surface contact angle of the surface layer according to the present invention is 10
The angle is preferably 0 to 120 degrees, and more preferably 105 to 115 degrees. Here, the surface contact angle is a measurement of a contact angle with respect to pure water, and for example, an automatic contact angle meter DAC-VZ (manufactured by Kyowa Interface Science Co., Ltd.) is used to appropriately measure the liquid (about 15 μl of pure water is gently applied to the measurement surface. The contact angle was measured 0.5 seconds after the sample was hung and brought into contact).

The surface roughness (definition will be described later) of the surface layer according to the present invention is preferably 0.2 μm or less, more preferably 0.1 μm or less.

The thickness of the surface layer according to the present invention is 1 μm to 5 μm.
It is preferably 0 μm, more preferably 10 μm.
m to 30 μm.

The primer layer according to the present invention will be described. Each of the fixing belt and the fixing roller of the present invention preferably has a primer layer on the substrate.

In the preparation of the primer layer, a silane coupling agent (for example, X-92-185 (manufactured by Shin-Etsu Chemical Co., Ltd.), a silicone primer solution for hard coat, etc.), a polyvinyl alcohol resin (for example, PVA-1).
24, 224, 424 (all manufactured by Kuraray), butyral resin (for example, 3000K (manufactured by Denki Kagaku Kogyo)), metal alkoxides such as titanium alkoxide and zirconium alkoxide, ethylene-vinyl acetate copolymer. , Vinylidene chloride and polybutadiene-based olefin resins, urethane-based resins, polyester-based resins, acrylic resins, epoxy-based resins, polyethyleneimine-based resins and the like are mentioned as preferred constituents. Compound,
It may be thermally cured using a curing agent such as an amine compound or an acid anhydride, or may be cured using an electron beam such as ultraviolet rays.

The materials described in Chapter 33 to Chapter 36 of "Handbook of New Laminating Process" edited by Processing Technology Association can also be used in the present invention as required.

The primer layer according to the present invention can be provided by a coating method of coating directly or by dissolving in a suitable solvent and coating / drying, a melt coating method of melting and coating a layer forming component, and the like.

Examples of the solvent used in the above coating method include water, alcohols, cellosolves, aromatics, ketones, ester solvents, ethers, chlorine solvents and the like. For the coating, a conventionally known dip coating method, a gravure roller coating method, an extrusion coating method,
A wire bar coating method, a roller coating method or the like can be adopted.

The thickness of the primer layer described above is usually preferably set so as to fall within the range of 0.1 μm to 50 μm.

The base material for the belt member used in the fixing belt according to the present invention and each base material used for the heating roller and the pressure roller of the fixing roller according to the present invention will be described.

From the viewpoint that the effect described in the present invention can be preferably obtained, the base material used for the belt member is preferably seamless nickel electroplated brass, and the base material of the heating roller and the pressure roller is preferably nickel. Substrate thickness is 1
It is preferably 0 μm to 100 μm.

In addition to nickel, aluminum, iron, polyethylene or the like can be used as the material of the base material.

The surface roughness of the base material of the fixing belt and the base material of the heating roller and the pressure roller according to the present invention is preferably 0.1 μm or less, more preferably 0.08 μm or less.
Further, the Young's modulus is preferably 50 kN / mm ² or more, more preferably 50 kN / mm ^{2 to} 300.
It is kN / mm ² .

Here, the measurement of the surface roughness of the surface layer and the surface roughness of the base material of the fixing belt and the fixing roller will be described.

In the present invention, the average surface roughness Ra was measured according to the following method. Atomic force microscope (Atomic
As a Force Microscopy (AFM), a sample cut into a size of about 1 cm square using a SPI3800N probe station manufactured by Seiko Instruments Inc. and a SPA400 multifunctional unit is used.
Set it on a horizontal sample stand on a piezo scanner, approach the sample surface with a cantilever, and when it reaches a region where atoms work, scan in the XY directions, and the irregularities of the sample at that time are displaced in the Z direction of the piezo. I caught it. The piezo scanner used was capable of scanning XY 20 μm and Z 2 μm. The cantilever is a silicon cantilever SI-DF20 manufactured by Seiko Instruments Inc., with a resonance frequency of 120 to 150 kHz and a spring constant of 12 to 20 N / m.
DFM mode (Dynamic For
ce Mode). Measuring area 2μm square, 1
(Or2) The visual field was measured at a scanning frequency of 1 Hz. Also,
By performing a least-squares approximation on the obtained three-dimensional data,
The slight inclination of the sample was corrected to obtain the reference surface.

The surface roughness is analyzed by the analysis software SPIwi.
The surface roughness analysis was called from the "Analysis" menu of n (ver. 2.05D2, manufactured by Seiko Instruments Inc.), and the average surface roughness was obtained from the obtained three-dimensional data.

The measurement plane represented by the measurement is Z = F (X,
It is represented by Y). The range of (X, Y) is (0,0) to
(X _max , Y _max ). Assuming that it is the designated surface * to be subjected to the roughness analysis, the surface area S ₀ is calculated by the following equation.

S ₀ = X _max · Y _{max When} the average value of the Z data in the designated plane is Z ₀ , Z = Z ₀
Z ₀ is _calculated by the following equation when the plane that becomes is the reference plane.

[0095]

[Equation 1]

Separately from JIS B601, the center line average roughness (Ra) is measured length L from the roughness curve in the direction of the center line.
When the direction of the center line of this extracted part is taken as the X axis, the direction of longitudinal magnification (perpendicular to the X axis) is taken as the Y axis, and the roughness curve is taken as Y = F (X),

[0097]

[Equation 2]

It is defined as the value given by. In the present invention, this center line average roughness Ra is three-dimensionally expanded so that it can be applied to the measurement surface, and is defined as the surface roughness (also referred to as average roughness Ra) according to the present invention. Express the absolute value of the deviation from the surface to the specified surface as an average value,
The value obtained by applying the following formula was used.

[0099]

[Equation 3]

A method of manufacturing the fixing belt and the fixing roller according to the present invention will be described. In the production of the fixing belt and the fixing roller according to the present invention, the addition-curable silicone or It is characterized in that the surface layer is formed through a step of heat-curing after dip-coating a curable silicone such as a condensation curable silicone.

The surface layer coating method according to the present invention includes dip coating method, bar coating method, blade coating method,
It may be prepared by applying an undercoat layer such as a primer layer by an air knife method, a slide coating device, curtain coating, etc., followed by drying, and then sequentially coating these layers such that a surface layer is coated thereon. The surface layer according to the present invention is preferably formed by coating the above-mentioned curable silicone on a substrate or a primer layer by dip coating.

Here, the viscosity of the coating liquid in the case of performing the dip coating described above is 0.01 Pa · s to 0.5 Pa /
It is preferable to adjust to the range of s.

A recording material (also referred to as a recording medium) according to the present invention will be described. The recording material is not particularly limited as long as it can receive an ink and form an image, but a material having an ink absorbing layer on a support is preferable from the viewpoint of strength.

As the support, a support conventionally used in ink jet recording materials, for example, a paper support such as plain paper, art paper, coated paper and cast coated paper, a plastic support, and both surfaces coated with polyolefin are used. It is possible to use the above paper support and a composite support obtained by laminating these paper supports.

For the purpose of increasing the adhesive strength between the support and the ink absorbing layer, it is preferable to subject the support to corona discharge treatment or subbing treatment prior to coating the ink absorbing layer. Furthermore, the recording paper of the present invention does not necessarily have to be colorless and may be a colored recording paper. Also,
It is particularly preferable to use a paper support in which both sides of the base paper support are laminated with polyethylene because the recorded image is close to the photographic quality and a high quality image can be obtained at low cost.

A paper support laminated with such a polyethylene will be described below. The base paper used for the paper support is mainly made of wood pulp, and if necessary, synthetic paper such as polypropylene or synthetic fiber such as nylon or polyester is used in addition to wood pulp. Examples of wood pulp include LBKP and LBS
P, NBKP, NBSP, LDP, NDP, LUKP,
Any of NUKP can be used, but it is preferable to use more of LBKP, NBSP, LBSP, NDP, and LDP having a large amount of short fibers. However, the ratio of LBSP or LDP is preferably 10% by mass or more and 70% by mass or less.

As the above-mentioned pulp, a chemical pulp containing few impurities (sulfate pulp or sulfite pulp) is preferably used, and a pulp whose whiteness is improved by bleaching is also useful.

In the base paper, for example, sizing agents such as higher fatty acids and alkyl ketene dimers, white pigments such as calcium carbonate, talc and titanium oxide, paper strengthening agents such as starch, polyacrylamide and polyvinyl alcohol, and fluorescent whitening. Agents, water retention agents such as polyethylene glycols, dispersants, and softening agents such as quaternary ammonium can be added as appropriate.

The freeness of pulp used for papermaking is CSF.
Is preferably 200 to 500 ml, and the fiber length after beating is 30 to 70% of the sum of the mass% of the 24 mesh residue and the mass% of the 42 mesh residue defined in JIS-P-8207. preferable. The mass% of the 4-mesh residue is preferably 20 mass% or less.

The basis weight of the base paper is preferably 30 to 250 g, particularly preferably 50 to 200 g. The thickness of the base paper is 40
˜250 μm is preferable.

The base paper can be given a high smoothness by calendering at the papermaking stage or after the papermaking. The base paper density is generally 0.7 to 1.2 g / cm ³ (JIS-P-8118). Furthermore, the stiffness of base paper is JIS-P-8143.
20 to 200 g is preferable under the conditions specified in 1.

A surface sizing agent may be applied to the surface of the raw paper. As the surface sizing agent, a sizing agent such as higher fatty acid or alkyl ketene dimer which can be added to the raw paper can be used.

The pH of the base paper is preferably 5 to 9 when measured by the hot water extraction method specified in JIS-P-8113.

The polyethylene for covering the front and back surfaces of the base paper is mainly low-density polyethylene (LDPE) and / or high-density polyethylene (HDPE), but other LLDPE, polypropylene or the like can be partially used.

In particular, the polyethylene layer on the ink absorbing layer side is preferably one in which rutile or anatase type titanium oxide is added to polyethylene so as to improve opacity and whiteness, as is widely used in photographic printing paper. . The content of titanium oxide is usually 3 to 20% by mass, preferably 4 to 13% by mass, based on polyethylene.

The polyethylene-coated paper may be used as a glossy paper, or may be subjected to a so-called patterning process when polyethylene is melt-extruded on the surface of the base paper for coating, and a matte surface or a silk surface obtained as in ordinary photographic printing paper. Surface-formed articles can also be used in the present invention.

The amount of polyethylene used on the front and back sides of the base paper is selected so as to optimize curling under low and high humidity after providing the void layer and the back layer, but usually the polyethylene layer on the void layer side is used. Is 20 to 40 μm, and the back layer side is 10
It is in the range of 30 μm.

Further, the above polyethylene-coated paper support preferably has the following characteristics.

1. Tensile strength: JIS-P-8113
2-30kg in the vertical direction and 1 in the horizontal direction with the strength specified by
1. It is preferable that the weight is 20 kg. Tear strength: 10 to 200 g in the vertical direction and 20 to 200 g in the horizontal direction according to the method specified in JIS-P-8116.
Is preferred. Compression modulus ≧ 98.1 MPa 4. Surface Beck smoothness: 20 seconds or more is preferable as a glossy surface under the conditions specified in JIS-P-8119,
It may be less than this for so-called typed products. Surface roughness: The average surface roughness defined in JIS-B-0601 has a maximum height of 10 per standard length of 2.5 mm.
5. It is preferably μm or less. Opacity: When measured by the method specified in JIS-P-8138, 80% or more, particularly 85 to 98% is preferable. Whiteness: L ^* specified by JIS-Z-8729,
a ^* and b ^* are L ^* = 80 to 95, a ^* = − 3 to +5, b ^* =
It is preferably -6 to +2. Surface gloss: 6 specified in JIS-Z-8741
9. The 0 degree specular gloss is preferably 10 to 95%. Clark stiffness: Clark stiffness in the conveying direction of the recording sheet, the support is 50~300cm ^2/100 is preferably 10. Water content of middle paper: Normally 2 to 100 relative to middle paper
Mass%, preferably 2 to 6 mass% The ink absorbing layer of the recording material is roughly classified into a swelling type and a void type.

As the swelling type, as the hydrophilic binder, for example, gelatin, polyvinyl alcohol, polyvinylpyrrolidone, polyethylene oxide or the like may be applied alone or in combination to form an ink absorbing layer.

As the void type, fine particles and a hydrophilic binder are mixed and applied, and those having gloss are particularly preferable. As the fine particles, alumina or silica is preferable, and silica having a particle diameter of 0.1 μm or less is particularly preferable. As the hydrophilic binder, for example, gelatin, polyvinyl alcohol, polyvinylpyrrolidone, polyethylene oxide and the like are preferably used alone or in combination.

In order to make it suitable for continuous or high-speed printing, it is suitable that the recording material has a high ink absorption speed, and from this point, the void type can be particularly preferably used.

The void-type ink absorbing layer of the recording medium used in the present invention will be described. The void layer is mainly formed by soft aggregation of the hydrophilic binder and the inorganic fine particles. Conventionally, various methods for forming voids in a film have been known. For example, a uniform coating solution containing two or more kinds of polymers is applied on a support, and these polymers are phase-separated from each other in a drying process. A method of forming voids by applying a coating solution containing solid fine particles and a hydrophilic or hydrophobic binder onto a support, and after drying, the inkjet recording paper is dipped in water or a solution containing a suitable organic solvent. A method of dissolving solid fine particles to form voids, a method of applying a coating solution containing a compound having the property of foaming during film formation, and then foaming this compound in the drying process to form voids in the film. Of coating liquid containing fine solid fine particles and hydrophilic binder on a support to form voids in and between porous fine particles, approximately equal to or more than the hydrophilic binder The coating solution containing the solid particles and or particulate oil and a hydrophilic binder having a volume and coated on a support, and a method of making an air gap between the solid particles are known. In the present invention, it is particularly preferable that the void layer is formed by containing various inorganic solid fine particles having an average particle diameter of 100 nm or less.

Examples of the inorganic fine particles used for the above purpose include light calcium carbonate, heavy calcium carbonate, magnesium carbonate, kaolin, clay, talc, calcium sulfate, barium sulfate, titanium dioxide, zinc oxide and zinc hydroxide. , Zinc sulfide, zinc carbonate, hydrotalcite, aluminum silicate, diatomaceous earth, calcium silicate, magnesium silicate, synthetic amorphous silica, colloidal silica, alumina, colloidal alumina, pseudo-boehmite, aluminum hydroxide, lithopone, zeolite, hydroxylation Examples thereof include white inorganic pigments such as magnesium.

The average particle size of the inorganic fine particles is obtained by observing the particles themselves or the particles appearing on the cross section or surface of the void layer with an electron microscope, obtaining the particle size of 1,000 arbitrary particles, and calculating the simple average value ( Number average). Here, the particle size of each particle is represented by the diameter assuming a circle equal to the projected area.

As the solid fine particles, solid fine particles selected from silica and alumina or alumina hydrate are preferably used, and silica is more preferable.

As the silica, silica synthesized by an ordinary wet method, colloidal silica, silica synthesized by a gas phase method, or the like is preferably used. As the fine particle silica particularly preferably used in the present invention, colloidal silica or silica is used. It is a fine particle silica synthesized by the phase method, and among them, fine particle silica synthesized by the gas phase method not only gives a high porosity but also becomes coarse when added to the cationic polymer used for the purpose of immobilizing the dye. It is preferable because aggregates are less likely to be formed. Further, the alumina or alumina hydrate may be crystalline or amorphous, and those having any shape such as amorphous particles, spherical particles and acicular particles can be used.

The fine particles are preferably in a state in which the fine particle dispersion liquid before mixing with the cationic polymer is dispersed up to the primary particles.

The particle size of the inorganic fine particles is preferably 100 nm or less. For example, in the case of the gas phase method fine particle silica, the average particle diameter of the primary particles of the inorganic fine particles dispersed in the state of primary particles (particle diameter in the dispersion state before coating) is
It is preferably 100 nm or less, more preferably 4 to
50 nm, most preferably 4 to 20 nm.

As the most preferably used silica synthesized by the vapor phase method having an average primary particle diameter of 4 to 20 nm, for example, Aerosil manufactured by Nippon Aerosil Co., Ltd. is commercially available. This gas phase method fine particle silica is in water,
For example, the primary particles can be relatively easily dispersed by suction dispersion using a jet stream inductor mixer manufactured by Mitamura Riken Kogyo Co., Ltd.

Examples of the hydrophilic binder include polyvinyl alcohol, gelatin, polyethylene oxide, polyvinylpyrrolidone, polyacrylic acid, polyacrylamide, polyurethane, dextran, dextrin, color genin (κ, ι, λ, etc.), agar, pullulan, water-soluble. Polyvinyl butyral, hydroxyethyl cellulose, carboxymethyl cellulose and the like. It is also possible to use two or more of these water-soluble resins in combination.

The water-soluble resin preferably used in the present invention is polyvinyl alcohol. The polyvinyl alcohol preferably used in the present invention includes, in addition to ordinary polyvinyl alcohol obtained by hydrolyzing polyvinyl acetate, modified polyvinyl alcohol such as cation-modified polyvinyl alcohol having terminals and anion-modified polyvinyl alcohol having an anionic group. Alcohol is also included.

As the polyvinyl alcohol obtained by hydrolyzing vinyl acetate, those having an average degree of polymerization of 1,000 or more are preferably used, and particularly, the average degree of polymerization is 1,500 to
Those of 5,000 are preferably used. Saponification degree is 7
0 to 100% is preferable, and 80 to 99.5% is particularly preferable.

As the cation-modified polyvinyl alcohol, for example, primary to tertiary amino groups or quaternary ammonium groups as described in JP-A-61-10483 can be used as the main chain or side chains of the polyvinyl alcohol. It is a polyvinyl alcohol contained in the chain and can be obtained by saponifying a copolymer of an ethylenically unsaturated monomer having a cationic group and vinyl acetate.

Examples of the ethylenically unsaturated monomer having a cationic group include trimethyl- (2-acrylamido-2,2-dimethylethyl) ammonium chloride and trimethyl- (3-acrylamido-3,3-dimethylpropyl). ) Ammonium chloride, N-vinylimidazole, N-vinyl-2-methylimidazole, N
-(3-dimethylaminopropyl) methacrylamide,
Hydroxylethyltrimethylammonium chloride, trimethyl- (2-methacrylamidopropyl) ammonium chloride, N- (1,1-dimethyl-3-)
Examples include dimethylaminopropyl) acrylamide.

The ratio of the cation-modified group-containing monomer of the cation-modified polyvinyl alcohol is 0.1 to 10 mol%, preferably 0.2 to 5 mol% with respect to vinyl acetate.

The anion-modified polyvinyl alcohol is, for example, polyvinyl alcohol having an anionic group as described in JP-A-1-206088, JP-A-61-237681, and JP-A-63-307979.
A copolymer of vinyl alcohol and a vinyl compound having a water-soluble group as described in JP-A No. 9-90,
A modified polyvinyl alcohol having a water-soluble group as described in JP-A-285265 can be used.

As the nonion-modified polyvinyl alcohol, for example, a polyvinyl alcohol derivative obtained by adding a polyalkylene oxide group to a part of vinyl alcohol as described in JP-A-7-9758, JP-A-8-25795. Examples thereof include block copolymers of a vinyl compound having a hydrophobic group and vinyl alcohol, which are described in Japanese Patent Laid-Open Publication No. 2003-242242.

Polyvinyl alcohol may be used in combination of two or more types such as different degree of polymerization or modification.

The addition amount of the inorganic fine particles used in the color material receiving layer largely depends on the required ink absorption capacity, the void ratio of the void layer, the type of the inorganic fine particles and the type of the water-soluble resin. Usually 5 to 30 per 1 m ^2.
g, preferably 10 to 25 g.

The ratio of the inorganic fine particles used in the color material receiving layer to the water-soluble resin is usually 2: 1 to 20: 1 in terms of mass ratio.
And particularly preferably 3: 1 to 10: 1.

[0142] colorant receiving layer may contain a cationic water-soluble polymer having a quaternary ammonium base in the molecule, an ink jet recording paper 1 m ² per normal 0.
It is used in the range of 1 to 10 g, preferably 0.2 to 5 g.

In the void layer, the total amount of voids (void volume)
Is preferably 20 ml or more per 1 m ² of recording paper. If the void volume is less than 20 ml / m ^{2 and} the ink amount during printing is small, the ink absorbability is good, but if the ink amount is large, the ink is not completely absorbed, and the image quality may deteriorate. Problems such as delayed drying tend to occur.

In the void layer having an ink holding ability, the void volume with respect to the solid content volume is called the porosity. In the present invention, it is preferable that the porosity is 50% or more because the voids can be efficiently formed without unnecessarily increasing the film thickness.

As another type of void type, a polyurethane resin emulsion is used in combination with a water-soluble epoxy compound and / or acetoacetylated polyvinyl alcohol in addition to forming the ink solvent absorption layer using inorganic fine particles,
Further, the ink solvent absorption layer may be formed by using a coating liquid in which epichlorohydrin polyamide resin is used in combination. The polyurethane resin emulsion in this case is preferably a polyurethane resin emulsion having a polycarbonate chain, a polycarbonate chain and a polyester chain and a particle diameter of 3.0 μm, and the polyurethane resin of the polyurethane resin emulsion is a polycarbonate polyol, a polycarbonate polyol and a polyol having a polyester polyol. It is further preferable that the polyurethane resin obtained by reacting with an aliphatic isocyanate compound has a sulfonic acid group in the molecule, and further has an epichlorohydrin polyamide resin and a water-soluble epoxy compound and / or acetoacetylated vinyl alcohol. .

In the ink solvent absorption layer using the polyurethane resin, weak aggregation of cations and anions is formed,
Along with this, it is estimated that voids having an ink solvent absorbing ability are formed and an image can be formed.

In the present invention, it is preferable to provide a layer containing a thermoplastic resin on the surface layer of the ink absorbing layer in order to achieve the object of the present invention.

The layer containing the thermoplastic resin may be a layer made of only the thermoplastic resin, or a layer containing a water-soluble binder or the like added as necessary. The thermoplastic resin is
From the viewpoint of ink permeability, fine particles are preferable.

Examples of the thermoplastic resin or fine particles include polycarbonate, polyacrylonitrile, polystyrene, polyacrylic acid, polymethacrylic acid, polyvinyl chloride, polyvinylidene chloride, polyvinyl acetate, polyester, polyamide and polyether. Examples thereof include copolymers and salts thereof. Among them, styrene-acrylic acid ester copolymers, vinyl chloride-vinyl acetate copolymers, vinyl chloride-acrylic acid ester copolymers, ethylene-vinyl acetate copolymers, ethylene- Acrylic acid ester copolymer and SBR latex are preferable. As the thermoplastic resin or the fine particles, a plurality of polymers having different monomer compositions, particle diameters and degrees of polymerization may be mixed and used.

In selecting a thermoplastic resin or fine particles, ink receptivity, glossiness of an image after fixing by heating and pressurization, image fastness and releasability should be taken into consideration.

Regarding the ink receptivity, when the particle size of the thermoplastic fine particles is less than 0.05 μm, the separation of the pigment particles and the ink solvent in the pigment ink becomes slow, and the ink absorption speed is lowered. On the other hand, if it exceeds 10 μm, it is not preferable from the viewpoint of the adhesiveness to the solvent absorbing layer adjacent to the ink receiving layer when coated on the support and the film strength of the inkjet recording material after coating and drying. For this reason, the preferable diameter of the thermoplastic resin fine particles is preferably from 0.05 μm to
It is 10 μm, more preferably 0.1 μm to 5 μm.
More preferably, it is 0.1 μm to 1 μm.

The glass transition point (Tg) can be mentioned as a criterion for selecting the thermoplastic resin or the fine particles. T
When g is lower than the coating drying temperature, for example, the coating drying temperature at the time of manufacturing the recording material is already higher than Tg, and voids due to the thermoplastic fine particles for the ink solvent to pass through disappear.

If the Tg is higher than the temperature at which the support is denatured by heat, a fixing operation at a high temperature is required for melt film formation after ink jet recording with a pigment ink. The thermal stability and the like becomes a problem. The preferred Tg of the thermoplastic fine particles is 50 ° C to 150 ° C.
Is. The minimum film forming temperature (MFT) is 50
It is preferably in the range of ℃ to 150 ℃.

From the viewpoint of environmental suitability, the thermoplastic fine particles are
Those dispersed in an aqueous system are preferable, and an aqueous latex obtained by emulsion polymerization is particularly preferable. At this time, a type obtained by emulsion polymerization using a nonionic dispersant as an emulsifier is a form that can be preferably used.

From the viewpoint of odor and safety, the thermoplastic fine particles to be used preferably have a small amount of residual monomer components, and are preferably 3% or less, more preferably 1% or less, and particularly preferably 1% or less, based on the solid mass of the polymer. Is preferably 0.1% or less.

As the water-soluble binder, polyvinyl alcohol or polyvinylpyrrolidone can be used in the range of 1 to 10% of the thermoplastic fine particles.

As the recording material according to the present invention, those having an ink absorbing layer on a support and having a surface layer containing at least an inorganic pigment and thermoplastic fine particles are preferably used.

Particularly, the following points can be given as preferable reasons. (A) High ink absorption speed, less likely to cause image deterioration such as beading and color bleeding, and suitable for high-speed printing (b) Strong image surface strength (c) Fusing at the time of image storage (D) excellent coating productivity of the ink absorption layer (e) excellent in writability. In this case, the solid content mass ratio of the thermoplastic fine particles in the surface layer to the inorganic pigment is thermoplastic fine particles and inorganic fine particles. It is preferably determined individually by the pigment and other additives, and is not particularly limited, but the thermoplastic fine particles / inorganic pigment is 2/8 to 8
It is preferable to select in the range of / 2, more preferably 3/7
˜7 / 3, and more preferably 4/6 to 6/4.

Next, the colorant used in the present invention will be described. As the colorant usable in the present invention, conventionally known ones can be used without particular limitation, and water-soluble dyes, water-dispersible dyes, water-dispersible pigments, solvent-soluble dyes, solvent-dispersible dyes, solvent-dispersible pigments. Although any of the above can be used, the solvent dispersible pigment is preferably used in the present invention.

These may be used alone or in combination of plural kinds. Of these, particularly preferable colorants are dispersed particles of a dispersible dye or a dispersible pigment. Typical colorants are listed below, but the present invention is not limited thereto.

<Direct Dye> C.I. I. Direct Yellow 1, 4, 8, 11, 12, 24, 26, 27, 28, 3
3, 39, 44, 50, 58, 85, 86, 100, 1
10, 120, 132, 142, 144; C.I. I. Direct Red 1, 2, 4, 9, 11, 13, 17, 2
0, 23, 24, 28, 31, 33, 37, 39, 4
4, 47, 48, 51, 62, 63, 75, 79, 8
0, 81, 83, 89, 90, 94, 95, 99, 22
0, 224, 227, 243; C.I. I. Direct Blue 1, 2, 6, 8, 15, 22, 25, 71, 76, 7
8, 80, 86, 87, 90, 98, 106, 108,
120, 123, 163, 165, 192, 193, 1
94, 195, 196, 199, 200, 201, 20
2, 203, 207, 236, 237; C.I. I. Direct Black 2, 3, 7, 17, 19, 22, 32, 3
8, 51, 56, 62, 71, 74, 75, 77, 10
5, 108, 112, 117, 154 <acid dye> C.I. I. Acid Yellow 2, 3, 7, 1
7, 19, 23, 25, 29, 38, 42, 49, 5
9, 61, 72, 99; C.I. I. Acid orange 5
6, 64; C.I. I. Acid Red 1, 8, 14, 1
8, 26, 32, 37, 42, 52, 57, 72, 7
4, 80, 87, 115, 119, 131, 133, 1
34, 143, 154, 186, 249, 254, 25
6; C.I. I. Acid Violet 11, 34, 75;
C. I. Acid Blue 1, 7, 9, 29, 87, 12
6, 138, 171, 175, 183, 234, 23
6, 249; C.I. I. Acid Green 9, 12, 1
9, 27, 41; C.I. I. Acid Black 1, 2,
7, 24, 26, 48, 52, 58, 60, 94, 10
7, 109, 110, 119, 131, 155 <Reactive dye> C.I. I. Reactive Yellow 1, 2,
3, 13, 14, 15, 17, 37, 42, 76, 9
5, 168, 175; C.I. I. Reactive Red 2,
6, 11, 21, 22, 23, 24, 33, 45, 11
1, 112, 114, 180, 218, 226, 22
8, 235; C.I. I. Reactive Blue 7, 14, 1
5, 18, 19, 21, 25, 38, 49, 72, 7
7, 176, 203, 220, 230, 235; C.I.
I. Reactive Orange 5, 12, 13, 35, 9
5; C.I. I. Reactive Brown 7, 11, 33, 3
7, 46; C.I. I. Reactive Green 8, 19;
C. I. Reactive Violet 2, 4, 6, 8, 2
1, 22, 25; C.I. I. Reactive Black 5,
8, 31, 39 <Basic dye> C.I. I. Basic Yellow 11, 1
4, 21, 32; C.I. I. Basic Red 1, 2,
9, 12, 13; C.I. I. Basic Violet 3,
7, 14; C.I. I. Basic Blue 3, 9, 24, 2
5 Examples of dyes for ink used in the present invention include chelate dyes and azo dyes used in so-called silver dye bleaching light-sensitive materials (for example, Ciba-Geigy manufactured Cibachrome).

Regarding the chelate dye, for example, the description in British Patent 1,077,484 can be referred to.

With respect to the azo dyes used in the silver dye bleaching method, for example, British Patent Nos. 1,039,458 and 1,059 are cited.
04,957, 1,077,628 and US Pat. No. 2,612,448 can be referred to.

The content of the water-soluble dye used in the ink of the present invention is preferably 1 to 15% by mass based on the total mass of the ink.

Disperse dyes preferably used in the present invention include, for example, C.I. I. Disperse Yellow
3, 4, 5, 7, 9, 13, 24, 30, 33, 34,
42, 44, 49, 50, 51, 54, 56, 58, 6
0, 63, 64, 66, 68, 71, 74, 76, 7
9, 82, 83, 85, 86, 88, 90, 91, 9
3, 98, 99, 100, 104, 114, 116, 1
18, 119, 122, 124, 126, 135, 14
0, 141, 149, 160, 162, 163, 16
4, 165, 179, 180, 182, 183, 18
6, 192, 198, 199, 202, 204, 21
0, 211, 215, 216, 218, 224; C.I.
I. Disperse Orange 1, 3, 5, 7,
11, 13, 17, 20, 21, 25, 29, 30, 3
1, 32, 33, 37, 38, 42, 43, 44, 4
5, 47, 48, 49, 50, 53, 54, 55, 5
6, 57, 58, 59, 61, 66, 71, 73, 7
6, 78, 80, 89, 90, 91, 93, 96, 9
7, 119, 127, 130, 139, 142; C.I.
I. Disperse Red 1, 4, 5, 7, 11,
12, 13, 15, 17, 27, 43, 44, 50, 5
2, 53, 54, 55, 56, 58, 59, 60, 6
5, 72, 73, 74, 75, 76, 78, 81, 8
2, 86, 88, 90, 91, 92, 93, 96, 10
3, 105, 106, 107, 108, 110, 11
1, 113, 117, 118, 121, 122, 12
6, 127, 128, 131, 132, 134, 13
5, 137, 143, 145, 146, 151, 15
2,153,154,157,159,164,16
7, 169, 177, 179, 181, 183, 18
4, 185, 188, 189, 190, 191, 19
2, 200, 201, 202, 203, 205, 20
6, 207, 210, 221, 224, 225, 22
7, 229, 239, 240, 257, 258, 27
7, 278, 279, 281, 288, 298, 30
2, 303, 310, 311, 312, 320, 32
4, 328; C.I. I. Disperse Violet
1, 4, 8, 23, 26, 27, 28, 31, 33, 3
5, 36, 38, 40, 43, 46, 48, 50, 5
1, 52, 56, 57, 59, 61, 63, 69, 7
7; C.I. I. Disperse Green 9; C.I.
I. Disperse Brown 1, 2, 4, 9, 1
3, 19; C.I. I. Disperse Blue3,
7, 9, 14, 16, 19, 20, 26, 27, 35,
43, 44, 54, 55, 56, 58, 60, 62, 6
4, 71, 72, 73, 75, 79, 81, 82, 8
3, 87, 91, 93, 94, 95, 96, 102, 1
06, 108, 112, 113, 115, 118, 12
0, 122, 125, 128, 130, 139, 14
1, 142, 143, 146, 148, 149, 15
3, 154, 158, 165, 167, 171, 17
3, 174, 176, 181, 183, 185, 18
6, 187, 189, 197, 198, 200, 20
1, 205, 207, 211, 214, 224, 22
5, 257, 259, 267, 268, 270, 28
4, 285, 287, 288, 291, 293, 29
5, 297, 301, 315, 330, 333; C.I.
I. Disperse Black 1, 3, 10, 2
4; and the like.

As the colorant used in the present invention, it is preferable to use a pigment from the viewpoint of obtaining good glossiness.
Further, for example, as a pigment used in the pigment ink, an insoluble pigment, an organic pigment such as a lake pigment, and carbon black can be preferably used.

The insoluble pigment is not particularly limited, but for example, azo, azomethine, methine, diphenylmethane, triphenylmethane, quinacridone, anthraquinone, perylene, indigo, quinophthalone, isoindolinone, isoindoline, azine, oxazine. ,
Thiazine, dioxazine, thiazole, phthalocyanine, diketopyrrolopyrrole and the like are preferable.

Specific pigments that can be preferably used include the following pigments. Examples of magenta or red pigments include C.I. I. Pigment Red 2, C.I. I. Pigment Red 3, C.I. I. Pigment Red 5, C.I. I. Pigment Red 6, C.I. I. Pigment Red 7, C.I. I. Pigment Red 15,
C. I. Pigment Red 16, C.I. I. Pigment Red 48: 1, C.I. I. Pigment Red 53: 1,
C. I. Pigment Red 57: 1, C.I. I. Pigment Red 122, C.I. I. Pigment Red 123,
C. I. Pigment Red 139, C.I. I. Pigment Red 144, C.I. I. Pigment Red 149, C.I.
I. Pigment Red 166, C.I. I. Pigment Red 177, C.I. I. Pigment Red 178, C.I. I.
Pigment Red 222 and the like.

Examples of pigments for orange or yellow include C.I. I. Pigment Orange 31, C.I.
I. Pigment Orange 43, C.I. I. Pigment Yellow 12, C.I. I. Pigment Yellow 13, C.I. I.
Pigment Yellow 14, C.I. I. Pigment Yellow 15, C.I. I. Pigment Yellow 17, C.I. I. Pigment Yellow 74, C.I. I. Pigment Yellow 9
3, C.I. I. Pigment Yellow 94, C.I. I. Pigment Yellow 138 and the like.

As the pigment for green or cyan,
For example, C.I. I. Pigment Blue 15, C.I. I. Pigment Blue 15: 2, C.I. I. Pigment Blue 1
5: 3, C.I. I. Pigment Blue 16, C.I. I. Pigment Blue 60, C.I. I. Pigment Green 7 and the like.

Other than the above, for example, carbon black pigment (CI Pigment Black 7); C.I.
I. Pigment Yellow 12, 13, 14,
16, 17, 73, 74, 75, 83, 108, 10
9, 110, 180, 182; C.I. I. Pigment
Red5, 7, 12, 112, 123, 168, 18
4, 202; C.I. I. Pigment Blue1,
2, 3, 15: 3, 16, 22, 60; C.I. I. Vat
Blue4, 60; and the like.

In addition to the above, when red, green, blue or intermediate colors are required, the following pigments are preferably used alone or in combination. I. Pigm
ent Red 209, 224, 177, 194; C.I.
I. Pigment Orange 43; C.I. I. Va
t Violet3; C.I. I. Pigment Vio
let 19, 23, 37; C.I. I. Pigment G
reen 36, 7; C.I. I. Pigment Blue
15: 6; etc. are used.

The pigments and disperse dyes used in the present invention are
It is preferable to use a disperser together with a dispersant and other additives necessary for the desired purposes. A conventionally known ball mill, sand mill, line mill, high-pressure homogenizer, or the like can be used as the disperser.

A surfactant is used as the dispersant. As the surfactant used in the present invention, any of cationic, anionic, amphoteric and nonionic can be used. As the cationic surfactant, an aliphatic amine salt,
Examples thereof include aliphatic quaternary ammonium salts, benzalkonium salts, benzethonium chloride, pyridinium salts, imidazolinium salts, and the like. Examples of the anionic surfactant include fatty acid soap, N-acyl-N-methylglycine salt,
N-acyl-N-methyl-β-alanine salt, N-acylglutamate, acylated peptide, alkyl sulfonate, alkylbenzene sulfonate, alkyl naphthalene sulfonate, dialkyl sulfosuccinate ester salt, alkyl sulfoacetate salt, α-Olefin sulfonate, N-acyl methyl taurine, sulfated oil, higher alcohol sulfate ester salt, secondary higher alcohol sulfate ester salt, alkyl ether sulfate, secondary higher alcohol ethoxy sulfate, polyoxyethylene alkylphenyl Ether sulfate, monoglycerate,
Examples thereof include fatty acid alkylolamide sulfate ester salt, alkyl ether phosphate ester salt, and alkyl phosphate ester salt. Examples of the amphoteric surfactant include carboxybetaine type, sulfobetaine type, aminocarboxylic acid salts, imidazolinium betaine and the like. Examples of the nonionic activator include polyoxyethylene secondary alcohol ether, polyoxyethylene alkylphenyl ether, polyoxyethylene sterol ether, polyoxyethylene lanolin derivative polyoxyethylene polyoxypropylene alkyl ether, polyoxyethylene glycerin fatty acid ester, and polyoxyethylene glycerin fatty acid ester. Oxyethylene castor oil, hydrogenated castor oil, polyoxyethylene sorbitol fatty acid ester, polyethylene glycol fatty acid ester, fatty acid monoglyceride, polyglycerin fatty acid ester, sorbitan fatty acid ester, propylene glycol fatty acid ester, sucrose fatty acid ester, fatty acid alkanolamide, polyoxyethylene Fatty acid amide, polyoxyethylene alkylamine, alkylamine oxide, acetyl Glycol, acetylene alcohol, and the like.

Further, for example, when the above colorant is used as an ink jet ink, it is preferable to use a surfactant for accelerating the permeation of the ink droplets after ink ejection into the medium. The surfactant is not limited as long as it does not adversely affect the storage stability of the ink, and the same surfactants as those used as the dispersant can be used.

In the present invention, an electric conductivity adjusting agent may be used. Examples of the electric conductivity adjusting agent include inorganic salts such as potassium chloride, ammonium chloride, sodium sulfate, sodium nitrate and sodium chloride, and triethanolamine. There are water-soluble amines such as.

In the ink used in the present invention, a viscosity adjusting agent and a specific resistance may be further added depending on the purpose of improving ejection stability, compatibility with print heads and ink cartridges, storage stability, image storability, and various other properties. It is also possible to add a regulator, a film-forming agent, an ultraviolet absorber, an antioxidant, an anti-fading agent, a rust preventive, a preservative and the like.

The ink used in the present invention contains water and a water-soluble organic solvent as main liquid medium components. As the water-soluble organic solvent, alkyl alcohols having 1 to 4 carbon atoms (eg, methyl alcohol, ethyl alcohol, n-propyl alcohol, isopropyl alcohol, n-butyl alcohol, sec-butyl alcohol, tert-butyl alcohol, isobutyl alcohol, etc.) ), Amides (eg dimethylformamide, dimethylacetamide etc.), ketones or keto alcohols (eg acetone, diacetone alcohol etc.), ethers (eg tetrahydrofuran, dioxane etc.), polyalkylene glycols (eg polyethylene glycol, polypropylene glycol) Etc.), alkylene glycols in which the alkylene group contains 2 to 6 carbon atoms (eg ethylene glycol, propylene glycol, butylene glycol, triene Ji glycol, 1,2,6-hexane triol,
Thiodiglycol, hexylene glycol, diethylene glycol, etc.), glycerin, lower alkyl ethers of polyhydric alcohols (ethylene glycol methyl ether, diethylene glycol methyl (or ethyl) ether, triethylene glycol monomethyl (or ethyl) ether, etc.) and the like. To be

Among many of these water-soluble organic solvents,
Preferred are polyhydric alcohols such as diethylene glycol and lower alkyl ethers of polyhydric alcohols such as triethylene glycol monomethyl (or ethyl) ether.

The content of the water-soluble organic solvent in the ink is generally 10 to 70% by mass based on the total mass of the ink.
%, Preferably 30 to 65%, particularly preferably 40 to 60%.

The inkjet ink used in the present invention preferably contains thermoplastic resin particles for the purpose of adhering to the transfer medium and enhancing the image strength on the transfer medium. It is particularly preferable to coat the dispersed particles of the colorant with a resin. As a combination with a colorant, the thermoplastic resin particles can be preferably used in any of a dissolution dye system, a disperse dye system and a disperse pigment system, and the resin coat can be particularly preferably used in a disperse dye system and a disperse pigment system. . The thermoplastic resin particles have a melting point of preferably 30 ° C. or higher, more preferably 40 ° C. or higher in order to stabilize the liquid properties at room temperature. Examples of the thermoplastic resin include those used for the transfer layer described below. As a coating agent for the particles used for the resin coating, a conventionally known thermoplastic resin having a melting point of 40 ° C. or higher can be used without particular limitation, and more preferably a melting point of 50 ° C.
As above, as the thermoplastic resin, for example, acrylic acid ester-based, methacrylic acid ester-based, styrene-based, styrene-acrylic copolymer, styrene-butadiene copolymer, acrylonitrile-butadiene copolymer, polybutadiene, vinyl acetate, polychlorinated Homopolymerization or copolymerization of vinyl, polyvinylidene chloride, ethylene vinyl acetate copolymer olefins and monomers having hydrophilic functional groups such as amino groups, amide groups, carboxyl groups, hydroxyl groups, etc. Resin emulsion, microemulsion, internal three-dimensional Examples thereof include crosslinked organic fine particles, natural / synthetic wax emulsions such as paraffin wax, polyethylene wax and carnauba wax, latex, colloidal solution and suspension.

As the ink used for image formation, a water-based ink composition, an oil-based ink composition, a solid (phase change) ink composition and the like can be used, and the water-based ink composition (for example, 10 per total mass of ink). Aqueous ink jet recording liquid containing water in an amount of at least mass% can be particularly preferably used.

A pigment dispersant may be used for these pigments if necessary, and examples of usable pigment dispersants include higher fatty acid salts, alkyl sulfates, alkyl ester sulfates, alkyl sulfonates, Sulfosuccinate,
Naphthalene sulfonate, alkyl phosphate, polyoxyalkylene alkyl ether phosphate, polyoxyalkylene alkyl phenyl ether, polyoxyethylene polyoxypropylene glycol, glycerin ester, sorbitan ester, polyoxyethylene fatty acid amide, amine oxide, etc. Activator, or styrene,
Block copolymerization consisting of two or more monomers selected from styrene derivative, vinylnaphthalene derivative, acrylic acid, acrylic acid derivative, maleic acid, maleic acid derivative, itaconic acid, itaconic acid derivative, fumaric acid, fumaric acid derivative Examples thereof include coalesce, random copolymers and salts thereof.

The method of dispersing the pigment is not particularly limited, and examples thereof include a ball mill, a sand mill, an attritor, a roll mill, an agitator, a Henschel mixer, a colloid mill, an ultrasonic homogenizer, a pearl mill, a wet jet mill, and a paint shaker. Various types can be used.

For removing coarse particles of the pigment dispersion according to the present invention, it is also preferable to use a centrifugal separator and a filter.

The average particle size of the pigment in the pigment ink is selected in consideration of stability in the ink, image density, glossiness, light resistance, etc. In addition, in the method for forming an inkjet pigment image of the present invention. From the viewpoint of improving gloss and improving texture, it is preferable to select the particle size. In the present invention, gloss improvement,
The reason for improving the texture is not clear, but it is speculated that the pigment is related to the fact that the thermoplastic fine particles are dispersed in the molten coating in the image. For the purpose of high-speed processing, thermoplastic fine particles are formed into a molten film in a short time,
Furthermore, the pigment must be well dispersed in the film. At this time, the surface area of the pigment has a great influence, and it is presumed that there is an optimum region in the average particle size.

The water-based ink composition, which is a preferred form of the pigment ink, is preferably used in combination with a water-soluble organic solvent.

Examples of the water-soluble organic solvent include alcohols (eg, methanol, ethanol, propanol, isopropanol, butanol, isobutanol,
Secondary butanol, tertiary butanol, pentanol, hexanol, cyclohexanol, benzyl alcohol, etc., polyhydric alcohols (eg ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, polypropylene glycol, butylene) Glycol, hexanediol, pentanediol, glycerin, hexanetriol, thiodiglycol, etc.), polyhydric alcohol ethers (eg, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl) Ether, diethylene glycol Bruno ether, propylene glycol monomethyl ether, propylene glycol monobutyl ether, ethylene glycol monomethyl ether acetate, triethylene glycol monomethyl ether, triethylene glycol monoethyl ether,
Triethylene glycol monobutyl ether, ethylene glycol monophenyl ether, propylene glycol monophenyl ether, etc.), amines (eg, ethanolamine, diethanolamine, triethanolamine, N-methyldiethanolamine, N-ethyldiethanolamine, morpholine, N-ethylmorpholine) ,
Ethylenediamine, diethylenediamine, triethylenetetramine, tetraethylenepentamine, polyethyleneimine, pentamethyldiethylenetriamine, tetramethylpropylenediamine, etc.), amides (eg, formamide, N, N-dimethylformamide, N, N-dimethylacetamide, etc.) , Heterocycles (eg, 2-pyrrolidone, N-methyl-2-pyrrolidone, cyclohexylpyrrolidone, 2-oxazolidone, 1,3-dimethyl-
2-imidazolidinone, etc., sulfoxides (eg,
Dimethyl sulfoxide etc.), sulfones (eg sulfolane etc.), urea, acetonitrile, acetone and the like. Examples of preferable water-soluble organic solvent include polyhydric alcohols. Furthermore, it is particularly preferable to use a polyhydric alcohol and a polyhydric alcohol ether together.

The water-soluble organic solvent may be used alone or in combination of two or more. The total amount of the water-soluble organic solvent added to the ink is 5 to 60% by mass, preferably 10 to
It is 35 mass%.

The ink composition comprises thermoplastic fine particles, a viscosity adjusting agent, and a surface tension adjusting agent according to the purpose of improving ejection stability, compatibility with print heads and ink cartridges, storage stability, image storability, and other various performances. An agent, a specific resistance adjuster, a film-forming agent, a dispersant, a surfactant, an ultraviolet absorber, an antioxidant, an anti-fading agent, an antibacterial agent, an anticorrosive agent and the like can be added as appropriate.

In particular, the addition of thermoplastic fine particles is
It is preferable for obtaining the effect of the present invention. As the thermoplastic fine particles, the types described in the description of the thermoplastic resin or fine particles that can be added to the surface layer of the recording material can be used. In particular, it is preferable to use a material which does not cause thickening or precipitation even when added to the ink. The average particle size of the thermoplastic fine particles is preferably 0.5 μm or less, and more preferably 0.2 times to 2 times the average particle size of the pigment in the ink.
It is preferable to select the double range from the viewpoint of stability. The thermoplastic fine particles to be added are melted in the range of 50 ° C to 200 ° C,
Those that soften are preferable.

The viscosity of the ink composition during flight is preferably 40 mPa · s or less, and more preferably 30 mPa · s or less.

The surface tension of the ink composition during flight is preferably 20 mN / m or more, and more preferably 30 to 45 mN / m.
Is more preferable.

The pigment solid content concentration in the ink can be selected in the range of 0.1% by mass to 10% by mass, and in order to obtain a photographic image, a so-called dark and light ink in which the pigment solid content concentration is changed is used. It is particularly preferable to use dark, light inks of yellow, magenta, cyan, and black, respectively. In addition, it is also preferable from the viewpoint of color reproducibility to use special color inks such as red, green and blue, if necessary.

The heat fixing device of the present invention will be described.
In order to obtain the effect described in the present invention, that is, to obtain an image showing a good glossiness after fixing, the heat fixing device according to the present invention includes at least one fixing belt according to the present invention or at least one fixing roller according to the present invention. It is characterized by having it as its constituent component.

Further, in the heat fixing process, it is sufficient to apply energy to the image so that the effect of the present invention is sufficiently exhibited. The heating temperature is, in the case of a pigment image, a temperature at which the image can be smoothed. It is sufficient that the temperature range is 60 ° C. to 200 ° C., and more preferably 80 ° C. to 160 ° C.

The heating may be performed by a heater built into the printer or a separately provided heater. As the heating means, it is preferable to use a heating roller for both the fixing roller and the fixing belt, because unevenness can be eliminated and continuous processing can be performed in a small space. Further, these devices can be used as a heat fixing device for electrophotography, which is advantageous in terms of cost.

The heating roller has a hollow roller as a constituent component and is rotated by the driving means. A heat source composed of, for example, a halogen lamp heater, a ceramic heater or a nichrome wire is used as a heat source in the hollow portion. It is preferably built-in.

The roller is preferably made of a material having a high thermal conductivity, and a metal roller is particularly preferable, but nickel is preferably used.

When a fixing belt or a fixing roller is used, the recording material conveying speed is preferably in the range of 1 mm / sec to 100 mm / sec, more preferably 10 mm / sec to 5 mm.
The range of 0 mm / sec is preferable. This is preferable not only from the viewpoint of high-speed processing but also from the viewpoint of image quality.

To obtain higher texture and luster, heating and
It is preferable to apply pressure at the same time or immediately after that. Addition
The pressure to be applied is 9.8x because film formation is promoted.
10 ^FourPa ~ 4.9 x 10⁶The range of Pa is preferable.

The image forming method according to the present invention will be described. The image forming method according to the present invention is characterized by using the heat fixing device according to the present invention at the time of fixing the image.
In the present invention, for example, in the case of forming an inkjet pigment image, there is no particular limitation as long as it has a recording material storage section, a transport section, an ink cartridge, and an inkjet print head like a commercially available printer. An inkjet printer that is a series of printer sets including at least a roll-shaped recording material storage unit, a transport unit, an inkjet printhead, a cutting unit, and optionally a heating unit, a pressure unit, and a recording print storage unit. This is useful for commercial use of photographs.

The recording head may be of any of the piezo system, the thermal system and the continuous system, but the piezo system is preferred from the viewpoint of stability in pigment ink.

After printing, the C
It is preferable to improve the value. As the treatment, the image is heated or pressed, or both heated and pressed, or a solvent or a plasticizer is added and further heated, or a thermoplastic resin component is supplied to the image and then heated. In addition, these processes may be combined or may be performed a plurality of times.

In the image forming method of the present invention, it is preferable that the recording material is printed with the pigment ink and then the recording material is heat-fixed by the heat-fixing device of the present invention. It is preferable to heat-fix the pigment image in which the pigment and the thermoplastic resin are mixed or present in the vicinity. In this case, it is preferable to partially or completely melt the thermoplastic resin and further form a film.

As a method of allowing a thermoplastic resin to coexist in a pigment image, 1) a recording material containing a thermoplastic resin, preferably thermoplastic fine particles is used, and 2) a thermoplastic resin is supplied to the recording material before or after printing. 3) A method of using an ink in which a thermoplastic resin coexists in the pigment ink is used.

In the present invention, the image sharpness called C value is preferably 60 or more. Here, the C value is defined as a measure of image clarity by taking the value measured by the reflection method using an optical comb of 2 mm as the C value in the image clarity defined in JIS-K-7105.

The image clarity referred to in the present invention represents the ability of the coating surface to transfer an image of an object facing the coating surface, and is a value indicating how accurately the incident image is reflected or projected on the image surface. Is. The more accurate the reflection image is given to the incident image, the higher the image clarity and the larger the C value. The C value shows the effect of combining the specular gloss and the smoothness of the surface, and the higher the reflectance and the higher the smoothness, the larger the C value.

As a result of examining various ink jet pigment images having different C values, it was found that a glossy feeling was obtained with an increase in the C value and an image similar to a silver salt photograph could be obtained. Further, it has been surprisingly found that the bronzing phenomenon peculiar to the pigment ink is suppressed as the C value increases. Further, they have found that as the C value increases, the image storability such as water resistance and acid gas resistance also improves.

A pigment image having a C value of 60 or more can obtain the effect aimed at by the present invention, but is preferably 70.
To 90, more preferably 75 to 90.

There are no particular restrictions on the method for setting the C value defined in the present invention to 60 or more. For example, after printing the ink pigment on the recording material, the image is heated or pressed, or heated or pressed. Both are performed, or a solvent or a plasticizer is added and further heated, or a method such as heating after supplying the thermoplastic resin component to the image is appropriately selected,
It can be achieved by combining them or performing the treatments a plurality of times.

[0212]

EXAMPLES The present invention will be described below with reference to examples, but the present invention is not limited thereto.

Example 1 <Manufacturing of fixing belt> (Manufacturing of fixing belt 106) Release agent for release paper (trade name:
KS-830E, manufactured by Shin-Etsu Chemical Co., Ltd., 1 L, catalyst (trade name: CAT-PL-50T, manufactured by Shin-Etsu Chemical Co., Ltd.) 10 m
1 were mixed and diluted to 5 L with toluene. This liquid was placed in a cylindrical beaker having an inner diameter of 15 cm and a height of 50 cm. A φ65 mm × 239 mm seamless nickel belt was set in a commercially available dip type coating machine, and the belt was lowered and immersed in a beaker. Next, the coating was performed by pulling up at a pulling rate of 10 mm / sec. After being left at room temperature for 5 minutes, it was heated and hardened in an oven at 120 ° C. for 1 hour to manufacture a fixing belt 106 having a surface layer as shown in FIG.

The peeling force of the surface layer of the obtained fixing belt 106 was 450 g / 5 cm, and the film thickness was 0.5 μm.

(Fixing belts 101 to 105, 107 to 1
Production of 13) The type of release paper release agent used during production of the fixing belt 106 is changed, and the catalyst, diluent solvent, curing temperature, and curing time are appropriately changed depending on the release paper release agent.
The fixing belts 101 to 105, 107 are similarly operated except that the peeling force and the pencil hardness as shown in FIG.
~ 113 was produced.

The fixing belts 101 to 113 obtained as described above.
In the evaluation of 1., an inkjet recording material and an inkjet ink were prepared as described below.

<< Preparation of Inkjet Recording Material >> Each dispersion was prepared by the following formulation, and an inkjet recording material was prepared using the dispersion.

<Preparation of Silica Dispersion-1> 125 kg of vapor phase method silica (QS-20 manufactured by Tokuyama Corporation) having an average primary particle diameter of about 0.012 μm is jetted by Mitamura Riken Kogyo Co., Ltd. The pH was adjusted to 2.5 using nitric acid using a stream inductor mixer TDS.
After suction-dispersing in 0 L of pure water at room temperature, the total amount is 694 L
And purified with pure water to prepare a silica dispersion liquid-1.

<Preparation of Silica Dispersion Liquid-2> 1.14 kg of the cationic polymer (P-1), 2.2 L of ethanol,
Aqueous solution containing 1.5 L of n-propanol (pH =
2.3) 69.4 L of Silica Dispersion-1 was added to 18 L with stirring, and then 260 g of boric acid and 2 g of borax were added.
7.0 L of an aqueous solution containing 30 g was added to the defoaming agent SN.
381 (manufactured by San Nopco Ltd.) was added in an amount of 1 g.

This mixed solution was dispersed with a high pressure homogenizer manufactured by Sanwa Kogyo Co., Ltd., and the total amount was adjusted to 97 L with pure water to prepare a silica dispersion-2.

[0221]

[Chemical 1]

<Preparation of Silica Coating Liquid> Next, using the silica dispersion liquid-2 obtained as described above, the following silica coating liquid was prepared.

The following additives were sequentially mixed into 600 ml of silica dispersion-2 while stirring at 40 ° C. (1) Polyvinyl alcohol (Kuraray Industry Co., Ltd .:
10% aqueous solution of PVA203): 6 ml (2) Polyvinyl alcohol (Kuraray Industry Co., Ltd .:
7% aqueous solution of PVA235): 185 ml (3) Make up to 1000 ml with pure water.

<Preparation of coating liquid for thermoplastic fine particles> A styrene-acrylic latex polymer (Tg7) obtained by emulsion polymerization using polyvinyl alcohol as a nonionic emulsifier.
8 ° C., average particle size 250 nm, solid content concentration 40%),
% Nitric acid aqueous solution to adjust the pH to 4.7 to prepare a styrene-acrylic thermoplastic fine particle coating solution.

<Preparation of Composite Fine Particle Coating Liquid> A composite fine particle coating liquid was prepared by making the thermoplastic fine particle coating liquid and the silica coating liquid have a solid content mass ratio of 2/1.

(Preparation of Inkjet Recording Material 1) Polyethylene-coated paper in which both sides of a 170 g / m ² thick base paper were coated with polyethylene (containing 8% by mass of anatase type titanium oxide in polyethylene on the ink receiving layer side; ink receiving) gelatin subbing layer of 0.05 g / m ² on the layer surface side, the Tg has a latex polymer of approximately 80 ° C. as a back layer 0.2 g / m ²⁾ on the opposite side, the silica coating solution of polyethylene-coated paper side, complex The fine particle coating solution was applied simultaneously so that the wet film thickness was 120 μm and 120 μm, respectively, cooled once to about 7 ° C., and then dried by blowing air at 20 ° C. to 65 ° C. to prepare inkjet recording material 1. .

<< Preparation of Inkjet Ink >> An ink composition was prepared as follows.

(Yellow Pigment Dispersion) C.I. I. Pigment Yellow 74 95 g Demol C (manufactured by Kao Corporation) 65 g Ethylene glycol 100 g Ion-exchanged water 120 g are mixed, and 0.5 mm zirconia beads are mixed at a volume ratio of 5
A 0% filled sand grinder was used for dispersion to obtain a yellow pigment dispersion. The average particle size of the obtained pigment dispersion was 122 nm. The particle size was measured by Zetasizer 1000 manufactured by Malvern Instruments.

(Magenta Pigment Dispersion Liquid) C.I. I. Pigment Red 122 105 g John Cryl 61 (acrylic-styrene resin, manufactured by Johnson) 60 g Glycerin 100 g Ion-exchanged water 130 g are mixed, and 0.5 mm zirconia beads are mixed at a volume ratio of 5
A 0% filled sand grinder was used for dispersion to obtain a magenta pigment dispersion. The average particle size of the obtained pigment dispersion was 85 nm.

(Cyan Pigment Dispersion) C.I. I. Pigment Blue 15: 3 100 g Demol C 68 g Diethylene glycol 100 g Ion-exchanged water 125 g are mixed, and 0.5 mm zirconia beads are mixed at a volume ratio of 5
A 0% filled sand grinder was used for dispersion to obtain a cyan pigment dispersion. The average particle size of the obtained pigment dispersion was 105 nm.

<Preparation of yellow ink> Yellow pigment dispersion 113 g Ethylene glycol 100 g Glycerin 72 g Perex OT-P (manufactured by Kao Corporation) 3 g Proxel GXL (manufactured by Zeneca) 0.2 g After sufficiently stirring, a yellow ink was prepared by passing twice through a Millipore filter having a pore size of 1 micron. pH is 8.
It was 2.

<Preparation of Cyan Ink> Cyan pigment dispersion 113 g Ethylene glycol 100 g Glycerin 72 g Perex OT-P (manufactured by Kao Corporation) 3 g Proxel GXL (manufactured by Zeneca) 0.2 g This is finished to 1000 g with ion-exchanged water After thoroughly stirring, a cyan ink was prepared by passing through a Millipore filter having a pore size of 1 micron twice. pH is 8.3
Met.

<Preparation of Magenta Ink> Magenta Pigment Dispersion Liquid 113 g Ethylene glycol 100 g 1,2-Hexanediol 100 g Perex OT-P (manufactured by Kao Corporation) 3 g Proxel GXL (manufactured by Zeneca) 0.2 g This is ion-exchanged After being made up to 1000 g with water and thoroughly stirred, a magenta ink was prepared by passing it twice through a Millipore filter having a pore size of 1 micron. pH is 8.
It was 5.

<Preparation of Black Ink> Hostfine Black T 167 g (manufactured by Clariant Co., Ltd., average particle size 50 nm) 1,2-hexanediol 150 g ethylene glycol 220 g diethylene glycol 90 g Rebenol WX (manufactured by Kao Corp.) 3 g Proxel GXL ( 0.2 g of this product was finished with ion-exchanged water to 1000 g, and after sufficiently stirring, a black ink was prepared by passing it twice through a Millipore filter filter having a pore size of 1 micron. pH is 8.
It was 6.

(Preparation of Image Samples 101 to 113) The fixing belts 101 to 113 obtained above are set in the ink jet printer with the heat fixing device shown in FIG. 1, and the ink jet ink is used to form the ink jet recording material 1. After printing a black solid image, heat fixing processing was performed by a fixing device in the apparatus to obtain image samples 101 to 113, respectively. Here, the temperature of the heating roller that applies heat to the fixing belt was set to 120 ° C.

The glossiness of the image samples 101 to 113 and the offset property to the fixing belt at the time of heat fixing are evaluated as follows.

(Evaluation of glossiness) Image samples 101 to 113
Each of the samples was measured for image clarity (gloss value C value%) at a reflection of 60 degrees and an optical comb of 2 mm with an image quality measuring device ICM-IDP (manufactured by Suga Test Machine Co., Ltd.).

(Evaluation of Offset Occurrence) Using A4 size plain paper, continuous black solid images were prepared, and the images after the heat fixing treatment and the surface on the fixing belt were directly observed visually to perform offsetting. The presence or absence of occurrence was ranked according to the following criteria.

⊚: No offset occurred on the image and the fixing belt ○: No offset on the image, slight offset on the fixing belt Δ: No offset on the image, offset occurred on the fixing belt (practical) The evaluation results thus obtained are shown in Table 1.

[0240]

[Table 1]

From Table 1, the peeling force of the surface layer is 30 g / 5c.
It is apparent that the sample image-formed using the fixing belt having a m or more or a pencil hardness of HB or more has a high gloss of the image sample, and both the image sample and the fixing belt have good offset resistance.

Example 2 <Production of fixing belt> (Production of fixing belt 202) Inner diameter 15 cm, height 50 c
5L of hard coat silicone primer liquid (trade name: PC-7A, manufactured by Shin-Etsu Chemical Co., Ltd.) in a cylindrical beaker of m
And place it in a dip-type coating machine as a fixing belt substrate φ6
A 5 mm × 239 mm seamless nickel belt was set, and the belt was lowered and immersed in a beaker. Next, the coating was performed by pulling up at a pulling rate of 10 mm / sec.
After left at room temperature for 5 minutes, it was cured in an oven at 120 ° C. for 1 hour to prepare a nickel belt having a primer layer.

Then, a surface layer was formed on the primer layer in the same manner as in the fixing belt 106 of Example 1 to obtain a fixing belt 202.

(Production of Fixing Belts 201, 203 and 204) In the production of the fixing belt 202, as shown in Table 2, except that the type of the release agent used for preparing the surface layer and the coating of the primer layer were changed. Similarly, the fixing belt 20
1, 203 and 204 were produced respectively.

(Preparation of Image Samples 201 to 204) The fixing belts 201 to 204 obtained above are set in the ink jet printer with the heat fixing device shown in FIG. 1, and black solid images are printed in the same manner as in Example 1. Then, the heat fixing process is performed by the fixing device in the apparatus, and the image samples 201 to 20
4 were obtained respectively. Here, the temperature of the heating roller for applying heat to the fixing belt was adjusted to 120 ° C.

Below, the peeling of the belt film on the fixing belt at the time of heating and fixing the image samples 201 to 204 was evaluated as described below.

<< Peeling of Belt Film >> As in the case of the offset evaluation in Example 1, five black solid images were continuously produced using A4 size plain paper, and then the adhesive tape (knit-polyester tape No. .31B (manufactured by Nitto Denko Co., Ltd.) 3 × 3 cm is attached on the surface layer so that air does not enter, and the operation of pulling vigorously (also called pulling operation) is repeated, and the degree of peeling of the film each time Was visually observed and ranked as follows.

◎: No film peeling after 10 pulling operations ○: No film peeling up to 5 pulling operations △: No film peeling after 1 pulling operation, but possible film peeling up to 5 times The results obtained are shown in Table 2.

[0249]

[Table 2]

From Table 2, a primer layer is provided on the substrate,
It is apparent that the fixing belt provided with the surface layer containing the silicone resin on the primer layer has very little belt film peeling.

Example 3 <Manufacturing of fixing belt> (Manufacturing of fixing belt 302) The fixing belt 10 of Example 1
In the production of No. 8, the fixing belt 30 was produced in the same manner except that the preparation of the surface layer was changed from dip coating to spray coating.
2 was produced.

(Manufacture of fixing belts 301, 303, 304) The fixing belt 3 is different except that the curing method or the coating method is different.
The fixing belts 301, 303, and 3 are manufactured in the same manner as in the preparation of 02.
04 was produced.

(Preparation of Image Samples 301 to 304 and Evaluation of Glossiness) The fixing belts 301 to 304 obtained above were set in the ink jet printer with the heat fixing device shown in FIG. A solid image was printed, and heat fixing processing was performed by a fixing device in the apparatus to obtain image samples 301 to 304, respectively. Here, the temperature of the heating roller for applying heat to the fixing belt was adjusted to 120 ° C.
The glossiness of the image samples 301 to 304 was evaluated in the same manner as described in Example 1. The results obtained are shown in Table 3.

[0254]

[Table 3]

From Table 3, sample 301 using dip coating rather than sample 302 having a surface layer formed by spray coating.
It can be seen that the above shows a better glossiness. Further, the sample 303 using the solvent-condensation type release agent is more preferable than the sample 304 using the ultraviolet curing type release agent as the release agent.
It is clear that it shows excellent gloss.

Example 4 <Production of Fixing Belt> (Production of Fixing Belts 401 to 410) In the production of the fixing belt 108 described in Example 1, the base material used for the fixing belt was changed to the material shown in Table 4. Other than the same,
The fixing belts 401 to 410 were manufactured.

(Preparation of Image Samples 401 to 410 and Evaluation of Glossiness) The fixing belts 401 to 410 obtained above were set in the ink jet printer with the heat fixing device shown in FIG. A solid image was printed, and heat fixing processing was performed by a fixing device in the apparatus to obtain image samples 401 to 410, respectively. Here, the temperature of the heating roller for applying heat to the fixing belt was adjusted to 120 ° C.
The glossiness of the image samples 401 to 410 was evaluated in the same manner as described in Example 1. The results obtained are shown in Table 4.

[0258]

[Table 4]

From Table 4, it is clear that Samples 401 to 406 imaged with a fixing belt using nickel as a base material show excellent glossiness.

Example 5 << Production of Fixing Roller >> (Production of Fixing Roller 501) Release Agent for Release Paper (Product Name:
KS-830E, manufactured by Shin-Etsu Chemical Co., Ltd., 1 L, catalyst (trade name: CAT-PL-50T, manufactured by Shin-Etsu Chemical Co., Ltd.) 10 m
1 were mixed and diluted to 5 L with toluene. This liquid was placed in a cylindrical beaker having an inner diameter of 15 cm and a height of 50 cm. A hollow aluminum roller having a diameter of 50 mm, a width of 394.4 mm and an inner diameter of 24 mm was set in a dip type coating machine, and the roller was lowered and immersed in a beaker. Next pulling speed 1
The surface layer was applied by pulling it up at 0 mm / sec. After leaving it at room temperature for 5 minutes, it was cured in an oven at 120 ° C. for 1 hour to prepare a surface layer. The thickness of the surface layer was 2 to 4 μm. Further, a commercially available halogen lamp was separately installed for heating as a heating roller in the hollow portion. A fixing roller 501 was manufactured by combining the heating roller and the pressure roller.

(Preparation of Image Sample 501) The fixing roller 501 obtained above is set in the ink jet printer equipped with the heat fixing device shown in FIG. 2, and the ink jet ink is used to carry out the ink jet recording described in the first embodiment. After a solid black image was printed on the material 1, a heat fixing process was performed by a fixing device in the device to obtain an image sample 501. Here, the temperature of the heating roller constituting the fixing roller is set to 120
It was set to ° C.

(Production of Image Sample 502) Image Sample 501
An image sample 502 was obtained in the same manner except that the inkjet recording material 1 was changed to Konica Photolike QP paper.

(Production of Image Sample 503) Image Sample 502
The image sample 5 was prepared in the same manner as in Example 1 except that the ink jet ink was changed to the dye ink described below.
03 was produced.

(Preparation of Dye Ink: Yellow, Magenta, Cyan, Black) An ink composition having the constitution shown below was prepared, and after sufficiently stirring, a 0.8 μm filter (DI
SMIC-25CS: Toyo Roshi Kais
ha LTD) and used.

<Preparation of Yellow Ink> Acid Yellow 42 (acid dye) 5% by mass Proxel GXL (D) (manufactured by Zeneca: 20% aqueous solution) 0.2% by mass ethylene glycol 12% by mass diethylene glycol 13% by mass ion-exchanged water Residual adjustment so that the total mass is 100% by mass <Preparation of magenta ink> Acid red 249 (acid dye) 3% by mass Proxel GXL (D) (manufactured by Zeneca: 20% aqueous solution) 0.2% by mass ethylene glycol 12% by mass Diethylene glycol 13% by mass Ion-exchanged water Residual adjustment so that the total mass is 100% by mass <Preparation of cyan ink> Acid blue 249 (acid dye) 3.8% by mass Proxel GXL (D) (manufactured by Zeneca) : 20% aqueous solution) 0.2 mass% ethylene glycol 12 mass% die Lenglycol 13% by mass Ion-exchanged water Residual adjustment so that the total mass is 100% by mass <Preparation of black ink> BASF Acid Black 34 (acid dye) 19% by mass Proxel GXL (D) (manufactured by Zeneca: 20% aqueous solution) ) 0.2% by mass Ethylene glycol 12% by mass Diethylene glycol 13% by mass Ion-exchanged water Residual adjustment so that the total mass is 100% by mass (production of image sample 504) Digital copier Konica
The 7075 (made by Konica) heat roller fixing device was modified to the fixing device shown in FIG. 2 so that the heat roller temperature could be set arbitrarily. After that, the black toner attached to the Konica 7075 is mounted on the copying machine, and the heat roller temperature is set to 120 ° C.
Image to produce a solid black fixed image.
It was set to 4. When outputting a fixed image, A4 size plain paper (basis weight: 65 g / m ² ) was used.

The glossiness of each of the obtained image samples 501 to 504 was evaluated in the same manner as in Example 1. The results obtained are shown in Table 5 below.

[0267]

[Table 5]

From Table 5, it can be seen that the image which has been subjected to the fixing treatment by the fixing roller of the present invention has an excellent glossiness after the fixing as compared with the glossiness before the fixing.

Example 6 (Production of fixing rollers 602 and 603) A fixing roller 602 was produced in the same manner as the fixing roller 501 described in Example 5, except that the coating was performed using a circular slide hopper.

A fixing roller 603 was manufactured in the same manner as the fixing roller 501 described in Example 5 except that spray coating was performed.

(Production of Image Samples 602 and 603) Image samples 602 and 603 were produced in the same manner as the image sample 501 except that the fixing rollers 602 and 603 were used. The glossiness of each of the obtained image samples 602 and 603 was evaluated in the same manner as in the method described in Example 1, and the obtained results are shown in Table 6.

[0272]

[Table 6]

As is clear from Table 6, the image sample formed by using the fixing roller manufactured by dip coating or circular slide hopper coating was compared with the image sample formed by using the fixing roller manufactured by spray coating. It can be seen that it exhibits excellent gloss.

[0274]

According to the present invention, the gloss of the image after fixing is good, there is no film peeling of the fixing member at the time of heat fixing, and there is no offset, a fixing belt, a fixing roller, a manufacturing method thereof, and an image fixing apparatus. It was also possible to provide a method for fixing an inkjet image.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing an example of an inkjet recording apparatus used in the present invention.

FIG. 2 is a schematic configuration diagram showing another example of an ink jet recording apparatus used in the present invention.

[Explanation of symbols]

1 recording material 2 Recording material transporting means 21 Transport roller pair 3 recording head 34 Recording material holding unit 4 Heat fixing means 41 heating roller 42 Pressure roller 43 heating element 44 fixing belt 45 Lower belt 46 Driven roller 5 Temperature sensor 6 Recording material cutting means 61, 62 cutter 7 Slack forming means 71 First Roller Pair 72 Second roller pair

Continued front page    (72) Inventor Hidenobu Oya             Konica Stock Market, 1 Sakura-cho, Hino City, Tokyo             In-house (72) Inventor Teruyuki Fukuda             Konica Stock Market, 1 Sakura-cho, Hino City, Tokyo             In-house (72) Inventor Fujio Miyamoto             2970 Ishikawa-cho, Hachioji-shi, Tokyo Konica stock             In the company F-term (reference) 2C056 EA04 FD20 HA45 HA46

Claims (28)

[Claims] 1. A fixing belt for heating and fixing an inkjet image formed on an inkjet recording medium, wherein the fixing belt has a substrate and a surface layer in contact with the inkjet recording medium, and the surface layer comprises: It is formed by dip-coating the curable silicone and then heat-curing the curable silicone, and the surface layer has a peeling force of 3
A fixing belt having a weight of 0 g / 5 cm or more. 2. A fixing belt for heating and fixing an inkjet image formed on an inkjet recording medium, the fixing belt having a substrate and a surface layer in contact with the inkjet recording medium, the surface layer comprising: A fixing belt formed by dip-coating a curable silicone and then heat-curing the curable silicone, wherein the surface layer has a pencil hardness of HB or higher. 3. The fixing belt according to claim 1, further comprising a primer layer between the surface layer and the base material. 4. The fixing belt according to claim 1, wherein the base material is a seamless nickel belt. 5. The surface contact angle of the surface layer is 100 ° to
The fixing belt according to claim 1, wherein the fixing belt has an angle of 120 °. 6. The fixing belt according to claim 1, wherein the surface roughness of the surface layer is 0.2 μm or less. 7. The fixing belt according to claim 6, wherein the surface roughness of the surface layer is 0.1 μm or less. 8. The thickness of the surface layer is 1 μm to 50 μm.
The fixing belt according to any one of claims 1 to 7, wherein: 9. The thickness of the base material is 10 μm to 100 μm.
The fixing belt according to any one of claims 1 to 8, wherein m is m. 10. The Young's modulus of the base material is 50 kN / m.
The fixing belt according to claim 1, wherein the fixing belt has a size of m ² or more. 11. The fixing belt according to claim 1, wherein the curable silicone is an addition curable silicone or a condensation curable silicone. 12. An inkjet recording medium having an inkjet image formed thereon, comprising a heating roller having a base material A and a pressure roller having an opposing base material B, is provided between the heating roller and the pressure roller. By passing
A fixing roller for inkjet heat fixing for fixing the inkjet image, wherein the heating roller or the pressure roller has a surface layer in contact with an inkjet recording medium, and the surface layer comprises a curable silicone on the substrate. Is formed by heat-curing the curable silicone after dip coating or bead coating using a circular slide hopper, and the peeling force of the surface layer is 30 g / 5c.
A fixing roller characterized by having a length of m or more. 13. An inkjet recording medium having an inkjet image formed thereon, which comprises a heating roller having a base material A and a pressure roller having an opposing base material B, is provided between the heating roller and the pressure roller. By passing
A fixing roller for inkjet heat fixing for fixing the inkjet image, wherein the heating roller or the pressure roller has a surface layer in contact with an inkjet recording medium, and the surface layer comprises a curable silicone on the substrate. A fixing roller formed by dip coating or bead coating using a circular slide hopper, followed by heat curing of the curable silicone, wherein the surface layer has a pencil hardness of HB or higher. 14. The surface contact angle of the surface layer is 100 °.
It is -120 degrees, 12 or 1 characterized by the above-mentioned.
The fixing roller according to item 3. 15. The surface roughness of the surface layer is 0.2 μm.
The fixing roller according to any one of claims 12 to 14, wherein: 16. The surface roughness of the base material A or the base material B is 0.1 μm or less.
The fixing roller according to any one of items 1 to 15. 17. The thickness of the base material A or the base material B is 1
13. The thickness is 0 μm to 100 μm.
The fixing roller according to any one of items 1 to 16. 18. The fixing roller according to claim 12, wherein the Young's modulus of the base material A or the base material B is 50 kN / mm ² or more. 19. The fixing roller according to claim 12, wherein the curable silicone is an addition curable silicone or a condensation curable silicone. 20. An inkjet recording medium having an inkjet image formed thereon, which comprises a heating unit, a pressure unit, and the fixing belt according to claim 1 or 2, is provided between the heating unit and the pressure unit. An image fixing apparatus, wherein the inkjet image is fixed by passing the inkjet recording medium and the fixing belt in a state of being opposed to each other. 21. An image fixing device comprising the fixing roller according to claim 12. 22. A method of manufacturing a fixing belt for ink-jet image heat fixing formed on an ink jet recording medium, comprising a step of dip-coating a curable silicone on a substrate and heat curing the curable silicone to obtain a peeling force. Is 3
And a step of forming a surface layer of 0 g / 5 cm or more. 23. A method of manufacturing a fixing belt for heating and fixing an ink jet image formed on an ink jet recording medium, comprising a step of dip-coating a curable silicone on a substrate and heat curing the curable silicone to obtain a pencil hardness. Forming a surface layer of HB or higher. 24. An ink jet recording medium having a heating roller having a base material A and a pressure roller having a base material B facing each other is provided between the heating roller and the pressure roller. By passing
In the method for producing a fixing roller for inkjet heat fixing for fixing the inkjet image, a step of dip-coating a curable silicone on the base material A or the base material B and heat curing the curable silicone, and a peeling force of 30 g / 5
and a step of forming a surface layer having a thickness of at least cm. 25. An inkjet recording medium having an inkjet image formed thereon, comprising a heating roller having a base material A and a pressure roller having an opposing base material B, is provided between the heating roller and the pressure roller. By passing
In the method for producing a fixing roller for inkjet heat fixing for fixing the inkjet image, a step of dip-coating a curable silicone on the base material A or the base material B and heat curing the curable silicone to have a pencil hardness of HB or more. And a step of forming a surface layer of the fixing roller. 26. A method of fixing an ink jet image formed on an ink jet recording medium using a heating means, a pressure means and the fixing belt according to claim 1 or 2.
A method for fixing an inkjet image, comprising a step of passing the inkjet recording medium and the fixing belt in a state of facing each other between the heating means and the pressing means. 27. The method of fixing an inkjet image according to claim 26, wherein the inkjet image is an inkjet pigment image. 28. The inkjet image according to claim 26, wherein the inkjet recording medium has a surface layer containing thermoplastic resin particles and an ink absorbing layer containing inorganic fine particles adjacent to the surface layer. Fixing method.