JP6949592B2 - Sol composition and its production method, as well as transfer material, transfer type inkjet recording device and transfer type inkjet recording method. - Google Patents

Description

The present invention relates to a sol composition and a method for producing the same, a transfer body, a transfer type inkjet recording apparatus using the transfer body, and a transfer type inkjet recording method.

The fluorine-containing polysiloxane obtained by hydrolyzing and condensing a fluorine-containing organic silane compound is excellent in water repellency, oil repellency and stain resistance, and is useful as a material having a low refractive index. Therefore, fluorine-containing polysiloxane is used as a coating agent for forming a water repellent, an antifouling film, an antireflection film for lenses and displays, and the like.

Patent Document 1 discloses a hydrolyzed condensate of a fluorine-containing silane compound and an epoxy group-containing silane compound under a base catalyst. Patent Document 2 discloses a hydrolyzed condensate of a perfluoroalkyl group-containing silane compound and an alkyl group-containing silane compound under an acid catalyst.
Further, as an image recording method using ink, a transfer type inkjet recording method in which an ink image is formed by applying ink to an image forming surface of a transfer body using an inkjet device and the formed ink image is transferred to a recording medium. It has been known. It is preferable that the transfer body used in this image recording method has a property that the ink image is easily peeled off on the surface thereof, that is, has good transferability of an intermediate image.
Patent Document 3 discloses a transfer body for transfer-type inkjet recording in which a fluorine-containing polysiloxane layer having high water repellency is provided on the surface.

Japanese Unexamined Patent Publication No. 2007-2194 Japanese Unexamined Patent Publication No. 2002-194336 Japanese Unexamined Patent Publication No. 2014-231223

In a transfer body for transfer type inkjet recording, appropriate hydrophilicity is also required in order to form a good ink image with ink. Therefore, when a conventional fluorine-containing polysiloxane is used on the surface of the transfer body, it may be difficult to form a good ink image because the water repellency is too high. Further, when a fluorine-containing polysiloxane is synthesized from an alkoxysilane monomer, cloudiness or gelation may occur in the conventional synthesis method.

Further, in the transfer body for transfer type inkjet recording, in order to have good transferability, it is necessary to impart flexibility to the surface of the transfer body and improve the shape followability to the surface of the recording medium, while repetitive transfer. Durability against contact with the recording medium is also required. Therefore, although appropriate flexibility is required for the surface of the transfer body, it may be difficult to achieve both transferability and durability with the conventional fluorine-containing polysiloxane.

Therefore, an object of the present invention is to provide a sol composition capable of imparting appropriate water repellency and flexibility, and a method for producing the sol composition. Another object of the present invention is to provide a transfer body having excellent transferability and durability, a transfer type inkjet recording apparatus using the transfer body, and a transfer type inkjet recording method.

〔式中、Ｘは環を構成する炭素原子数が２又は３の環状エーテル基を含む有機基を表す。Ｒ^１及びＲ^２はそれぞれ独立して、炭素原子数１乃至６の直鎖又は分枝状のアルキル基を表す。ｎは０又は１を表す。〕
で表される環状エーテル基含有シラン化合物と、
（Ｂ）下記一般式［２］

〔式中、Ｚは炭素原子数１乃至６の直鎖又は分枝状のアルキル基を表す。Ｒ^３及びＲ^４はそれぞれ独立して、炭素原子数１乃至６の直鎖又は分枝状のアルキル基を表す。ｍは０又は１を表す。〕
で表されるアルキル基含有シラン化合物と、
（Ｃ）下記一般式［３］

〔式中、Ｙ^１はフッ素原子数９乃至２５、炭素原子数４乃至１４の直鎖又は分枝状のフッ化アルキル基を表す。Ｒ^５及びＲ^６はそれぞれ独立して、炭素原子数１乃至６の直鎖又は分枝状のアルキル基を表す。ｐは０又は１を表す。〕
で表される長鎖フッ化アルキル基含有シラン化合物と、
の加水分解縮合物を含む転写型インクジェット記録の転写体用のゾル組成物であって、
前記加水分解縮合物の縮合率が４５％以上７０％以下であることを特徴とする。 The object is achieved by the following invention.
The sol composition according to the present invention is
(A) The following general formula [1]

[In the formula, X represents an organic group containing a cyclic ether group having 2 or 3 carbon atoms constituting the ring. R ¹ and R ² each independently represent a linear or branched alkyl group having 1 to 6 carbon atoms. n represents 0 or 1. ]
Cyclic ether group-containing silane compound represented by
(B) The following general formula [2]

[In the formula, Z represents a linear or branched alkyl group having 1 to 6 carbon atoms. R ³ and R ⁴ independently represent a linear or branched alkyl group having 1 to 6 carbon atoms. m represents 0 or 1. ]
Alkyl group-containing silane compound represented by
(C) The following general formula [3]

[In the formula, Y ¹ represents a linear or branched alkyl fluoride group having 9 to 25 fluorine atoms and 4 to 14 carbon atoms. R ⁵ and R ⁶ each independently represent a linear or branched alkyl group having 1 to 6 carbon atoms. p represents 0 or 1. ]
A long-chain alkyl fluoride group-containing silane compound represented by
A sol composition for a transfer body for transfer type inkjet recording, which comprises a hydrolyzed condensate of the above.
The condensation rate of the hydrolyzed condensate is 45% or more and 70% or less.

Further, the method for producing a sol composition according to the present invention is as follows.
(A) a cyclic ether group-containing silane compound represented by the general formula [1], (B) an alkyl group-containing silane compound represented by the general formula [2], and (C) the general formula [3]. A step of mixing a long-chain alkyl fluoride group-containing silane compound represented by (1) and an organic acid to obtain a mixture, and a step of hydrolyzing and condensing the mixture to obtain a sol composition containing a hydrolyzed condensate. And, characterized by having.

Further, the transfer body according to the present invention is a transfer body for transfer type inkjet recording having at least a surface layer portion, and is characterized in that the transfer body has at least a cured product of the sol composition on the surface layer portion.

Further, the transfer type inkjet recording apparatus according to the present invention is characterized by including the above-mentioned transfer body.

Further, the transfer-type inkjet recording method according to the present invention includes a step of forming an ink image by applying ink on a transfer body using an inkjet device, and transferring the ink image from the transfer body to a recording medium. It is a transfer type inkjet recording method including a step, and is characterized in that the transfer body is the transfer body described above.

According to the present invention, it is possible to provide a sol composition capable of imparting appropriate flexibility and water repellency, and a method for producing the sol composition. Further, according to the present invention, it is possible to provide a transfer body having excellent transferability and durability, a transfer type inkjet recording apparatus using the transfer body, and a transfer type inkjet recording method.

It is a schematic diagram which shows the structure of the transfer body for transfer type inkjet recording of this invention. It is a figure which shows the structural example of the transfer body for transfer type inkjet recording of this invention. It is a schematic diagram which shows an example of the transfer type inkjet recording apparatus of this invention.

Hereinafter, the present invention will be described in detail with reference to preferred embodiments. In the present invention, the inkjet recording device including the transfer body is hereinafter referred to as a transfer type inkjet recording device for convenience, and the inkjet recording method using the transfer body is hereinafter referred to as a transfer type inkjet recording method for convenience. ..
<Sol composition>
The sol composition of the present invention is a sol composition containing a hydrolysis condensate of the following component (A), the following component (B), and the following component (C), and is used for a transfer body for transfer type inkjet recording. It is a sol composition.
(A) Cyclic ether group-containing silane compound represented by the general formula [1] (B) Alkyl group-containing silane compound represented by the general formula [2] (C) Represented by the general formula [3] Long-chain alkyl fluoride group-containing silane compound

The present inventors paid attention to the monomer composition of each organic silane compound constituting the sol composition and the condensation rate of the sol composition. Specifically, the present invention has been completed by the following considerations.
The sol composition used for the surface layer portion of the transfer body for transfer type inkjet recording is required to have both appropriate strength and flexibility after curing. Therefore, the present inventors have considered imparting functionality to the silane compound monomer and combining the strength obtained by cross-linking by polymerization of a cyclic ether group with the flexibility obtained by a non-cross-linking alkyl group. Further, the sol composition for the transfer body is also required to have appropriate water repellency, in other words, low surface free energy. Therefore, the present inventors have considered adding a long-chain alkyl fluoride group-containing silane compound monomer together with the above two types of silane compounds as a monomer for obtaining a hydrolyzed condensate. Further, considering that it is a hydrolyzed condensate made of at least three kinds of functional silane compounds, and further, by setting the condensation rate of this hydrolyzed condensate within a specific range, the sol composition for the transcript of the present invention can be obtained. I arrived.
The sol composition of the present invention is mixed by adding an organic silane compound as a component of (A) to (C), a polymerization initiator for a cyclic ether group, and if necessary, other additives, and diluted with a solvent. It is prepared as a curable solution. The curable solution is used as a cured product cured by light irradiation and / or heating.

(A) Cyclic ether group-containing silane compound The cyclic ether group-containing silane compound represented by the formula [1] is used not only for the formation of siloxane bonds by hydrolysis and condensation reaction, but also for cross-linking by polymerization of cyclic ether groups. NS. Therefore, the cyclic ether group-containing silane compound has the effect of increasing the hardness and strength of the cured product according to the present invention.

Further, particularly when the polymerization of the cyclic ether group is carried out by light irradiation, it can be used as temporary curing of the coating film of the curable solution by performing the light irradiation before heating. By such temporary curing, the film thickness variation and surface shape roughness of the cured product film can be reduced, and a cured product film having high uniform film forming property can be obtained.

In the formula [1], among the organic groups containing the cyclic ether group represented by X, the cyclic ether group having 2 or 3 carbon atoms constituting the ring is an epoxy group or an oxetanyl group, which is substituted with an alkyl group, respectively. It may have been done.

Specific examples of the organic group containing the cyclic ether group represented by X include 2-glycidoxyethyl group, 3-glycidoxypropyl group, 2- (3,4-epoxycyclohexyl) ethyl group, 3-( 3-Occetanyloxy) propyl group, 3- (3-methyloxetane-3-yloxy) propyl group, 3- (3-oxetanylmethoxy) propyl group, 3- (3-ethyloxetane-3-ylmethoxy) propyl group, 2 -(3-Occetanyloxy) ethyl group, 2- (3-methyloxetane-3-yloxy) ethyl group, 2- (3-oxetanylmethoxy) ethyl group, 2- (3-ethyloxetane-3-ylmethoxy) ethyl group Etc., but are not limited to these. The organic group containing the cyclic ether group represented by X is more preferably a 3-glycidoxypropyl group.

^{Specific examples of the linear or branched alkyl group having 1 to 6 carbon atoms represented by R 1} and R ² in the formula [1] include a methyl group, an ethyl group, a propyl group, and an isopropyl group. Examples thereof include, but are not limited to, n-butyl group, sec-butyl group, isobutyl group, tert-butyl group, n-pentylki group, sec-pentyl group, isopentyl group, neopentyl group and n-hexyl group. The linear or branched alkyl group having 1 to 6 carbon atoms represented by R ¹ and R ^{2 is preferably a methyl group or an ethyl group.}

In the formula [1], n represents 0 or 1, preferably n is 1. When n is 1, the cyclic ether group-containing silane compound is a bifunctional condensable silane compound monomer having two condensable alkoxy groups represented by ^{OR 2 in the formula [1].} In the case of a bifunctional monomer, the condensate becomes a linear one-dimensional polysiloxane and no cross-linking point is formed due to the formation of a siloxane bond, so that the hardness of the cured product is suppressed from becoming excessively high and the cured product is flexible. It is preferable because it can impart a high elasticity.

Specific examples of the cyclic ether group-containing silane compound represented by the formula [1] include 2-glycidoxyethylmethyldimethoxysilane, 2-glycidoxyethylmethyldiethoxysilane, and 3-glycidoxypropylmethyldimethoxysilane. , 3-glycidoxypropylmethyldiethoxysilane, 3-glycidoxypropylethyldiethoxysilane, 3-glycidoxypropylethyldimethoxysilane, 3-glycidoxypropylbutyldiethoxysilane, 2- (3,4) -Epoxycyclohexyl) ethylmethyldimethoxysilane, 2- (3,4-epoxycyclohexyl) ethylmethyldiethoxysilane, 2- (3,4-epoxycyclohexyl) ethylpropyldiethoxysilane, 2-glycidoxyethyltrimethoxysilane , 2-glycidoxyethyl triethoxysilane, 3-glycidoxypropyltrimethoxysilane, 3-glycidoxypropyltriethoxysilane, 3-glycidoxypropyltriethoxysilane, 2- (3,4-epoxycyclohexyl) ) Ethyltrimethoxysilane, 2- (3,4-epoxycyclohexyl) ethyltriethoxysilane 3- (3-oxetanyloxy) propylmethyldimethoxysilane, 3- (3-oxetanyloxy) propylmethyldiethoxysilane, 3-( 3-Occetanyloxy) Propyltrimethoxysilane, 3- (3-Oxettanyloxy) Propyltriethoxysilane, 3- (3-Methyloxetane-3-yloxy) Propylmethyldimethoxysilane, 3- (3-Methyloxetane-3-3) Iloxy) Propylmethyldiethoxysilane, 3- (3-methyloxetane-3-yloxy) propyltrimethoxysilane, 3- (3-methyloxetane-3-yloxy) propyltriethoxysilane, 3- (3-oxetanylmethoxy) Propylmethyldimethoxysilane, 3- (3-oxetanylmethoxy) propylmethyldiethoxysilane, 3- (3-oxetanylmethoxy) propyltrimethoxysilane, 3- (3-oxetanylmethoxy) propyltriethoxysilane, 3- (3- (3-) Ethyloxetane-3-ylmethoxy) propylmethyldimethoxysilane, 3- (3-ethyloxetane-3-ylmethoxy) propylmethyldiethoxysilane, 3- (3-ethyloxetane-3-ylmethoxy) propyltrimethoxysilane, 3-( 3-Ethyloxetane-3-Ilmeth Xi) propyltriethoxysilane, 2- (3-oxetanyloxy) ethylmethyldimethoxysilane, 2- (3-oxetanyloxy) ethylmethyldiethoxysilane, 2- (3-oxetanyloxy) ethyltrimethoxysilane, 2-( 3-Occetanyloxy) ethyltriethoxysilane, 2- (3-methyloxetane-3-yloxy) ethylmethyldimethoxysilane, 2- (3-methyloxetane-3-yloxy) ethylmethyldiethoxysilane, 2- (3-) Methyloxetane-3-yloxy) ethyltrimethoxysilane, 2- (3-methyloxetane-3-yloxy) ethyltriethoxysilane, 2- (3-oxetanylmethoxy) ethylmethyldimethoxysilane, 2- (3-oxetanylmethoxy) Ethylmethyldiethoxysilane, 2- (3-oxetanylmethoxy) ethyltrimethoxysilane, 2- (3-oxetanylmethoxy) ethyltriethoxysilane, 2- (3-ethyloxetane-3-ylmethoxy) ethylmethyldimethoxysilane, 2 -(3-Ethyloxetane-3-ylmethoxy) ethylmethyldiethoxysilane, 2- (3-ethyloxetane-3-ylmethoxy) ethyltrimethoxysilane, 2- (3-ethyloxetane-3-ylmethoxy) ethyltriethoxysilane Etc., but are not limited to these.

(B) Alkyl Group-Containing Silane Compound The alkyl group-containing silane compound represented by the formula [2] contributes to an appropriate flexibility of the cured product. In particular, by controlling the content ratio of the cyclic ether group-containing silane compound, a cured product having both appropriate hardness and flexibility can be obtained.

Specific examples of the linear or branched alkyl group having 1 to 6 carbon atoms represented by Z in the formula [2] are described above represented by ^{R 1} and R ^{2 in the formula [1].} It is the same as the specific example of the alkyl group of. Further, the linear or branched alkyl group having 1 to 6 carbon atoms represented by Z is preferably a methyl group.
Specific examples of the linear or branched alkyl group having 1 to 6 carbon atoms represented by ^{R 3} and R ⁴ in the formula [2] ^{are R 1} and R ² in the formula [1]. It is the same as the specific example of the above-mentioned alkyl group represented. Further, similarly to ^{R 1} and R ² in the formula [1] ^{, R 3} and R ⁴ are preferably a methyl group and an ethyl group.

In the formula [2], m represents 0 or 1, and m is preferably 1. When m is 1, the alkyl group-containing silane compound is a bifunctional condensable silane compound monomer having two condensable alkoxy groups represented by ^{OR 4 in the formula [2], and the condensate thereof is direct.} It becomes a chain-like one-dimensional polysiloxane. Therefore, for the same reason as described above, the bifunctional monomer is preferable because it can impart flexible elasticity to the cured product.

Specific examples of the alkyl group-containing silane compound represented by the formula [2] include methyltrimethoxysilane, dimethyldimethoxysilane, methyltriethoxysilane, dimethyldiethoxysilane, methyltri-n-propoxysilane, and n-propyltrimethoxy. Silane, n-propyltriethoxysilane, diisopropyldimethoxysilane, di-n-butyldimethoxysilane, isobutyltrimethoxysilane, isobutyltriethoxysilane, diisobutyldimethoxysilane, diisobutyldiethoxysilane, n-pentyltriethoxysilane, n-hexyl Trimethoxysilane, n-hexyltriethoxysilane, n-octyltrimethoxysilane, n-octyltriethoxysilane, n-octylmethyltrimethoxysilane, n-octylmethyltriethoxysilane, isooctyltrimethoxysilane, n-decyl Trimethoxysilane, n-decyltriethoxysilane, n-dodecyltriethoxysilane, n-dodecylmethyldiethoxysilane, n-octadecyltrimethoxysilane, n-octadecyltriethoxysilane, n-octadecylmethyldimethoxysilane, n-octadecyl Examples thereof include, but are not limited to, methyldiethoxysilane.

(C) Long-chain alkyl fluoride group-containing silane compound The long-chain alkyl fluoride group-containing silane compound represented by the formula [3] contributes to the water repellency of the cured product. In particular, when the coating film of the curable solution is cured, the alkyl fluoride chain is oriented and segregated on the surface of the coating film, so that high water repellency can be exhibited on the surface of the cured product film. The long-chain alkyl fluoride group-containing silane compound represented by this formula [3] is also referred to as the first alkyl fluoride group-containing silane compound.

In the formula [3], Y ¹ represents a linear or branched alkyl fluoride group having 9 to 25 fluorine atoms and 4 to 14 carbon atoms. In order to effectively provide water repellency by surface segregation, it is preferable that the group is a long-chain alkyl fluoride group having a total number of fluorine atoms of 9 or more. However, a long-chain alkyl fluoride group having a total number of fluorine atoms exceeding 25 is not preferable because the compatibility in the sol composition is remarkably lowered and the sol becomes cloudy.

Specific examples of the long-chain alkyl fluoride group represented by Y ¹ include 1H, 1H, 2H, 2H-nonafluoro-n-hexyl group, 1H, 1H, 2H, 2H-tridecafluoro-n-octyl group. Examples thereof include, but are not limited to, 1H, 1H, 2H, 2H-heptadecafluorodecyl group, perfluorododecyl-1H, 1H, 2H, 2H- group.

Specific examples of the linear or branched alkyl group having 1 to 6 carbon atoms represented by ^{R 5} and R ⁶ in the formula [3] ^{are R 1} and R ² in the formula [1]. It is the same as the specific example of the above-mentioned alkyl group represented. Further, similarly to ^{R 1} and R ² in the formula [1] ^{, R 5} and R ⁶ are preferably a methyl group and an ethyl group.
In formula [3], p represents 0 or 1.

Specific examples of the alkyl fluoride group-containing silane compound represented by the formula [3] include trimethoxy (1H, 1H, 2H, 2H-nonafluoro-n-hexyl) silane and triethoxy (1H, 1H, 2H, 2H-nonafluoro). -N-hexyl) silane, dimethoxy (1H, 1H, 2H, 2H-nonafluoro-n-hexyl) methylsilane, trimethoxy (1H, 1H, 2H, 2H-tridecafluoro-n-octyl) silane, triethoxy (1H, 1H) , 2H, 2H-tridecafluoro-n-octyl) silane, diethoxy (1H, 1H, 2H, 2H-tridecafluoro-n-octyl) methylsilane, trimethoxy (1H, 1H, 2H, 2H-heptadecafluorodecyl) Silane, triethoxy (1H, 1H, 2H, 2H-heptadecafluorodecyl) silane, perfluorododecyl-1H, 1H, 2H, 2H-trimethoxysilane, perfluorododecyl-1H, 1H, 2H, 2H-triethoxysilane Etc., but are not limited to these.

(Condensation rate)
The sol composition of the present invention contains at least a hydrolysis condensate of (A) a cyclic ether group-containing silane compound, (B) an alkyl group-containing silane compound, and (C) a long-chain fluorinated alkyl group-containing silane compound. .. Further, it is important that the condensation rate of the hydrolyzed condensate contained in the sol composition of the present invention is 45% or more and 70% or less. The condensation rate of this hydrolyzed condensate can be calculated from the peak integral values of D0 to D2 and T0 to T3 ^{in 29 Si-NMR measurement.}
Specifically, the condensation rate is calculated from the following formula [5].

〔式［５］中、Ｄ０乃至Ｄ２は、ゾル組成物の^２９Ｓｉ−ＮＭＲスペクトルにおいて、２官能の有機シラン化合物に帰属されるケイ素原子であって、下記Ｄ０体乃至Ｄ２体に帰属されるケイ素原子のピーク積分値を表す。
Ｄ０体：他のケイ素原子とは酸素を介して結合していないケイ素原子
Ｄ１体：１つのケイ素原子と酸素を介して結合しているケイ素原子
Ｄ２体：２つのケイ素原子と酸素を介して結合しているケイ素原子
Ｔ０乃至Ｔ３は、ゾル組成物の^２９Ｓｉ−ＮＭＲスペクトルにおいて、３官能の有機シラン化合物に帰属されるケイ素原子であって、下記Ｔ０体乃至Ｔ３体に帰属されるケイ素原子のピーク積分値を表す。
Ｔ０体：他のケイ素原子とは酸素を介して結合していないケイ素原子
Ｔ１体：１つのケイ素原子と酸素を介して結合しているケイ素原子
Ｔ２体：２つのケイ素原子と酸素を介して結合しているケイ素原子
Ｔ３体：３つのケイ素原子と酸素を介して結合しているケイ素原子〕

[In the formula [5], D0 to D2 are silicon atoms belonging to the bifunctional organic silane compound in ^{the 29 Si-NMR spectrum of the sol composition, and silicon belonging to the following D0 to D2 bodies.} Represents the peak integrated value of an atom.
D0 body: Silicon atom D1 body that is not bonded to other silicon atoms via oxygen: Silicon atom D2 body that is bonded to one silicon atom via oxygen: Bonded to two silicon atoms via oxygen The silicon atoms T0 to T3 are the silicon atoms ^{belonging to the trifunctional organic silane compound in the 29} Si-NMR spectrum of the sol composition, and the silicon atoms belonging to the following T0 to T3 bodies. Represents the peak integrated value.
T0 body: Silicon atom T1 body that is not bonded to other silicon atoms via oxygen: Silicon atom T2 body that is bonded to one silicon atom via oxygen: Bonded to two silicon atoms via oxygen Silicon atom T3 body: Silicon atom bonded to three silicon atoms via oxygen]

The condensation rate is preferably 50% or more and 65% or less, and more preferably 50% or more and 60% or less. Within the preferable condensation rate range, the uniform film-forming property of the curable liquid can be enhanced.
If the condensation rate is less than 45%, uneven coating of the curable liquid is likely to occur, and the uniform film forming property is lowered. On the other hand, when the condensation rate exceeds 70%, cloudiness and gelation are likely to occur in the sol composition. Further, when the condensation rate exceeds 70%, the viscosity of the sol composition becomes high, which leads to a decrease in solubility in a curable solution and a decrease in uniform film forming property due to uneven coating.

(D) Fluorinated Alkyl Group-Containing Silane Compound The sol composition of the present invention comprises the above-mentioned silane compounds (A) to (C) and (D) a fluorinated alkyl group-containing silane compound represented by the following formula [4]. It is preferably a hydrolyzed condensate of. The alkyl fluoride group-containing silane compound represented by this formula [4] is also referred to as a second alkyl fluoride group-containing silane compound.

〔式中、Ｙ^２はフッ素原子数３乃至８、炭素原子数１乃至６の直鎖又は分枝状のフッ化アルキル基を表す。Ｒ^７及びＲ^８はそれぞれ炭素原子数１乃至６の直鎖又は分枝状のアルキル基を表す。ｑは０又は１を表す。〕

[In the formula, Y ² represents a linear or branched alkyl fluoride group having 3 to 8 fluorine atoms and 1 to 6 carbon atoms. R ⁷ and R ⁸ represent linear or branched alkyl groups having 1 to 6 carbon atoms, respectively. q represents 0 or 1. ]

Unlike the (C) alkyl fluoride group-containing silane compound, the (D) alkyl fluoride group-containing silane compound has the total number of fluorine atoms in the group of the alkyl fluoride group represented by ^{Y 2 in the formula [4].} It is 3 to 8 and is a relatively short-chain alkyl fluoride group.
As described above, the (C) alkyl fluoride group-containing silane compound is used for surface segregation of the alkyl fluoride group, whereas the (D) alkyl fluoride group-containing silane compound is mainly present inside the cured product membrane. , The water repellency inside the film can be enhanced. When the water repellency inside the film is increased, for example, when the ink or reaction liquid used in the transfer-type inkjet image forming method comes into contact with the cured product film, the dimensional change or film physical characteristics due to permeation / diffusion or swelling of the liquid component inside the film. It is possible to suppress the deterioration of the ink.

In the formula [4], specific examples of a linear or branched alkyl fluoride group having 3 to 8 fluorine atoms and 1 to 6 carbon atoms represented by ^{Y 2 include a trifluoromethyl group and 2,} 2,2-Trifluoroethyl group, perfluoroethyl group, 3,3,3-trifluoropropyl group, 2,2,3,3,3-pentafluoropropyl group, perfluoropropyl group, etc. 4,4 4-Trifluoro-n-butyl group, 6,6,6-trifluoro-n-hexyl group, 4,4,5,5,6,6,6-heptafluoro-n-hexyl group, 6,6 Examples include, but are not limited to, 7,7,8,8,8-heptafluoro-n-octyl groups.

Specific examples of the linear or branched alkyl group having 1 to 6 carbon atoms represented by ^{R 7} and R ⁸ in the formula [4] ^{are R 1} and R ² in the formula [1]. It is the same as the specific example of the above-mentioned alkyl group represented. Further, similarly to ^{R 1} and R ² in the formula [1] ^{, R 7} and R ⁸ are preferably a methyl group and an ethyl group.

In formula [4], q represents 0 or 1, preferably q is 1. When q is 1, the alkyl fluoride group-containing silane compound is a bifunctional condensable silane compound monomer having two condensable alkoxy groups represented by ^{OR 8 in the formula [4], and the condensate thereof.} Becomes a linear, one-dimensional polysiloxane. Therefore, for the same reason as described above, the bifunctional monomer is preferable because it can impart flexible elasticity to the cured product.

Specific examples of the alkyl fluoride group-containing silane compound represented by the formula [4] include trifluoromethyltrimethoxysilane, trifluoromethyltriethoxysilane, 3,3,3-trifluoropropyltrimethoxysilane, 3, 3,3-Trifluoropropyltriethoxysilane, 3,3,3-trifluoropropylmethyldimethoxysilane, 3,3,3-trifluoropropylmethyldiethoxysilane, perfluoropropyltrimethoxysilane, 4,4,4 , 3,3-Pentafluoro-n-butyltrimethoxysilane, 6,6,7,7,8,8,8-heptafluoro-n-octyltrimethoxysilane and the like, but are not limited thereto.

(Ratio of silane compounds)
In the method for producing a sol composition of the present invention, the ratio of each silane compound used for the hydrolysis and condensation reaction in the mixture before hydrolysis and condensation is as follows, based on the total number of moles of all silane compounds. It is preferable to have.
The proportion of the cyclic ether group-containing silane compound represented by the formula [1] in the mixture is preferably 20 mol% or more and 80 mol% or less. In particular, it is more preferably 30 mol% or more and 70 mol% or less, and further preferably 30 mol% or more and 50 mol% or less.
The proportion of the long-chain alkyl fluoride group-containing silane compound represented by the formula [3] in the mixture is preferably 0.1 mol% or more and 5 mol% or less, and 0.1 mol% or more and 2 mol% or less. Is more preferable.
As the silane compound, an alkyl fluoride group-containing silane compound represented by the above formula [4] can be further used. In that case, the proportion of the fluorinated alkyl group-containing silane compound represented by the formula [4] in the mixture is preferably 1 mol% or more and 50 mol% or less, and more preferably 3 mol% or more and 25 mol% or less. preferable.
The proportion of the alkyl group-containing silane compound represented by the formula [2] in the mixture is adjusted to the above-mentioned preferable range for the silane compounds represented by the formulas [1], [3] and [4]. It can be adjusted as appropriate so that it can be done.
Within the above range of the silane compound monomer ratio, a sol composition that is less likely to cause cloudiness or gelation can be obtained, and the flexibility, strength, and water repellency after curing are improved. In particular, by setting the proportion of the (C) long-chain alkyl fluoride group-containing silane compound within the above range, the water repellency of the cured product can be easily adjusted to an appropriate range.
The ratio of each unit contained in the hydrolyzed condensate is preferably as follows, based on the total number of moles of units derived from all silane compounds.
The hydrolyzed condensate preferably contains 20 mol% or more and 80 mol% or less of units derived from the cyclic ether group-containing silane compound represented by the formula [1]. In particular, it is more preferably contained in an amount of 30 mol% or more and 70 mol% or less, and further preferably contained in an amount of 30 mol% or more and 50 mol% or less.
The hydrolyzed condensate preferably contains 0.1 mol% or more and 5 mol% or less of units derived from the long-chain alkyl fluoride group-containing silane compound represented by the formula [3]. In particular, it is more preferable to contain 0.1 mol% or more and 2 mol% or less.
The hydrolyzed condensate preferably contains 1 mol% or more and 50 mol% or less of a unit derived from the fluorinated alkyl group-containing silane compound represented by the formula [4]. In particular, it is more preferable to contain 3 mol% or more and 25 mol% or less.

<Manufacturing method of sol composition>
The method for producing a sol composition of the present invention comprises a step of mixing the silane compounds (A) to (C), preferably (D), and an organic acid to obtain a mixture, and hydrolyzing the mixture. And a step of subjecting to condensation to obtain a sol composition.
In the present production method, the hydrolysis and condensation reaction of the silane compound is preferably carried out when the content of the organic acid in the mixture is 250 ppm or more and 1000 ppm or less based on the total mass of the mixture.
Among the silane compounds (A) to (D), the reactivity of the (B) alkyl group-containing silane compound is often higher than that of other silane compounds. However, when the content of the organic acid is in the range of 250 ppm or more and 1000 ppm or less, a single reaction with only the alkyl group-containing silane compound is unlikely to occur, the reaction can be highly controlled, and the sol composition does not become cloudy or gelled. You can get things.
Further, when the content of the organic acid is in the range of 250 ppm or more and 1000 ppm or less, the cyclic ether group in the silane compound (A) is prevented from opening and deactivating due to a side reaction during hydrolysis and condensation. Can be done.

Specific examples of the organic acid used as a catalyst include, but are not limited to, carboxylic acids such as formic acid, acetic acid, and propionic acid. Acetic acid is preferable as the organic acid used as a catalyst.
When an inorganic acid or an inorganic base is used as a catalyst, the inorganic salt remains in the sol composition and further in the cured product unless the synthesized sol composition is removed by washing with water or the like, and is contained in the cured product. There is concern that it may affect various physical properties. When an organic acid that is liquid at least at room temperature is used at a concentration of a very small amount of 1000 ppm or less, the organic acid has an advantage that it volatilizes during heat curing and does not remain in the final cured product film.

Further, in the method for producing a sol composition of the present invention, it is preferable that the co-hydrolysis reaction of the silane compound monomer is carried out in the presence of water. The amount of water used is preferably 1.0 to 2.0 times the number of moles of the hydrolyzable alkoxy group in the silane compound in the presence of water. More preferably, it is carried out in the presence of 1.2 to 1.8 times the amount of water with respect to the hydrolyzable alkoxy group.

<Transfer>
As an image recording method using ink, an ink image is formed by applying ink to an image forming surface of a transfer body using an inkjet device, and the formed ink image is transferred to a recording medium by contacting the recording medium. A transfer type inkjet recording method is known. It is preferable that the transfer body used in this image recording method has a property that the ink image is easily peeled off on the surface thereof, that is, has good ink image transferability. Further, for the purpose of retaining the ink image formed on the transfer body, a liquid that reduces the fluidity of the ink by contacting the transfer body with the ink before applying the ink (hereinafter referred to as "reaction liquid"). Is preferably given.

FIG. 1 shows a configuration of a transfer body for transfer-type inkjet recording according to an embodiment of the present invention. The transfer body 1 has a surface layer portion 2, and the image forming surface of the transfer body 1 is the surface of the surface layer portion 2 (the surface of the transfer body). An ink image is formed by applying ink to the image forming surface using an inkjet device. Hereinafter, the ink image formed on the transfer body is also referred to as an intermediate image.
The transcript of the present invention may be a single layer or may be composed of a plurality of layers. When composed of a plurality of layers, the surface layer portion can be provided as a thick layer on the side closest to the image forming surface of the transfer body. Here, FIG. 2 shows a configuration example in which the transcript is composed of a plurality of layers. The transfer body 1 may have an elastic layer 3, a compression layer 4, and a base material 5 in this order under the surface layer portion 2 on the image forming surface side (surface side). Each layer of the transcript will be described below.

[Surface]
The surface layer portion of the transfer body of the present invention is a portion including an image forming surface located on the outermost surface of the transfer body on the image forming surface side, and may form a layer like the surface layer. The surface layer portion has a surface having good peelability from the intermediate image. On the other hand, in order to form a good intermediate image with ink, the surface of the transfer body is also required to have appropriate hydrophilicity.
Further, in the transfer body for transfer type inkjet recording, in order to have good transferability, it is necessary to impart flexibility to the surface of the transfer body and improve the shape followability to the surface of the recording medium, while repetitive transfer. Durability against contact with the recording medium is also required. Therefore, the surface of the transfer body needs to have appropriate flexibility.

The surface layer portion of the transcript of the present invention is formed by the cured product of the sol composition containing the hydrolyzed condensate of the organic silane compound of the present invention described above. Specifically, a curable solution obtained by mixing a sol composition, a polymerization initiator for a cyclic ether group contained in the sol composition,, if necessary, other additives, and a solvent is exposed and / or It is a cured product cured by heating. By using a cured product formed by the sol composition of the present invention for the surface layer portion, it is possible to impart appropriate water repellency, flexibility and strength to the surface of the transfer material, and it is excellent in transferability and durability. A transfer body for transfer type inkjet recording can be provided.

The sol composition of the present invention is preferably contained in the cured product constituting the surface layer portion as a solid content of 10% by mass or more and 100% by mass or less after dehydration condensation, preferably 20% by mass or more and 100% by mass or less. It is more preferable to contain the following.

Further, by adjusting the type and amount of the additive, various functionalities can be imparted to the physical characteristics of the surface of the transfer material. For example, a compound having a polyether oxide unit may be added to impart flexibility, and an inorganic filler having high thermal conductivity may be added to increase the thermal conductivity. The amount of the additive added is preferably 0.1% by mass or more and 90% by mass or less, and more preferably 5% by mass or more and 70% by mass or less, based on the solid content of the sol composition after dehydration condensation.
As the polymerization initiator, known photocationic polymerization initiators, thermal cationic polymerization initiators and the like may be used for the polymerization of cyclic ether groups.

As a method for forming the surface layer portion, a known method can be used. For example, it can be formed by applying the curable solution by a spin coating method, a slit coating method, a bar coating method, or the like to form a film, and then exposing and heat-curing the solution.

The thickness of the surface layer portion is preferably 0.1 μm or more and 30 μm or less. When the thickness of the surface layer portion is 0.1 μm or more, it is easy to uniformly form the surface layer on the surface of the transfer body as the outermost layer. Further, when the thickness of the surface layer portion is 30 μm or less, the internal stress at the time of deformation does not become excessively large, and the effect of the present invention can be sufficiently obtained. The thickness of the surface layer portion is more preferably 1 μm or more and 10 μm or less, and in this range, the followability to the surface shape of the recording medium at the time of transfer is ensured, and better transferability can be obtained.

Regarding the flexibility of the surface layer portion, with respect to the storage elastic modulus which is a spring elastic modulus component of the viscoelastic body, the storage elastic modulus of the surface layer portion in the transfer material of the present invention is preferably 20 MPa or more and 100 MPa or less. When the storage elastic modulus is within the above range, it is possible to suppress the occurrence of cracks during repeated transfer and the abrasion of the surface layer portion due to contact with the recording medium. The storage elastic modulus of the surface layer portion is more preferably 20 MPa or more and 50 MPa or less, and in this case, extremely high durability can be obtained.

Further, regarding the ease of plastic deformation of the viscoelastic body or the loss tangent (tan δ = loss elastic modulus / storage elastic modulus) used as an index of brittleness, the loss tangent of the surface layer portion of the transfer body is 0.100 or less. Is preferable. When the loss tangent is 0.100 or less, it is possible to suppress the occurrence of cracks during repeated transfer. The loss tangent of the surface layer portion is preferably 0.050 or less, and in this case, extremely high durability can be obtained. The lower limit of the loss tangent of the surface layer portion is not particularly limited, but may be, for example, 0.001 or more.
The storage elastic modulus and loss tangent are values measured by a nanoindenter for dynamic viscoelasticity measurement of a thin film with a Berkovich diamond indenter under the conditions of a load of 40 μN, a frequency of 150 Hz, and room temperature (25 ° C.). Is.

Further, in order to improve the wettability, image quality, transferability and the like of the reaction solution, the surface layer portion may be subjected to surface treatment. Examples of the surface treatment include frame treatment, corona treatment, plasma treatment, polishing treatment, roughening treatment, active energy ray irradiation treatment, ozone treatment, surfactant treatment, silane coupling treatment and the like. These may be a combination of a plurality. Further, any surface shape may be provided on the surface layer portion.

[Elastic layer]
The elastic layer is a layer having an elastic body that may be sandwiched between the surface layer portion and the compression layer. By providing the elastic layer, the ability to follow the uneven shape of the surface of the recording medium on the surface of the surface layer of the transfer body at the time of transfer is improved. Further, even when the surface uneven shape of the compression layer is large, the elastic layer is formed on the compression layer, which contributes to the smoothing of the surface of the transfer body.

As the material of the elastic layer, various materials such as resin and ceramic can be appropriately used. The elastic layer may be composed of a plurality of layers having different materials and compositions. From the viewpoint of processing characteristics and the like, various elastomer materials and rubber materials are preferably used. Specifically, for example, silicone rubber, fluorosilicone rubber, phenylsilicone rubber, fluororubber, chloroprene rubber, urethane rubber, nitrile rubber, ethylene propylene rubber, natural rubber, styrene rubber, isoprene rubber, butadiene rubber, ethylene / propylene / diene rubber. , Nitrile butadiene rubber and the like. Among these, silicone rubber, fluorosilicone rubber, and phenylsilicone rubber are preferable in terms of dimensional stability and durability because they have a small compression set, and because they have high heat resistance and a small temperature change in elastic modulus, they are transferable. It is also preferable in terms of. Further, ethylene, propylene, and diene rubber are preferably used in terms of suppressing cracks in the surface layer portion because they have high tear strength and high elongation at break. The elastic layer preferably contains these resins, ceramics, and rubber in a total amount of 10% by mass or more and 100% by mass or less, more preferably 30% by mass or more and 100% by mass or less, and 50% by mass or less. It is more preferable that the content is 100% by mass or less.

The thickness of the elastic layer is preferably 0.01 mm or more and 1.0 mm or less, and more preferably 0.05 mm or more and 0.5 mm or less.

The hardness of the elastic body used for the elastic layer is a durometer type A (JIS K 6253 compliant) hardness, preferably 20 degrees or more and 80 degrees or less, and more preferably 30 degrees or more and 60 degrees or less. .. By setting the hardness of the elastic body to 20 degrees or more, it is possible to suppress large deformation of the elastic layer and ensure good followability of the surface layer portion to the deformation of the elastic layer. Further, by setting the hardness of the elastic body to 80 degrees or less, the local stress applied to the surface layer portion particularly at the time of high-speed transfer can be sufficiently relaxed by the elastic layer, and the crack resistance and transferability of the transfer body can be sufficiently relaxed. Can be enhanced.

[Compression layer]
The compression layer is a layer having a function of absorbing pressure fluctuations. By providing the compression layer, the compression layer absorbs the deformation, disperses the fluctuation against local pressure fluctuations, and can maintain good transferability even during high-speed printing.

Examples of the material of the compression layer include acrylonitrile-butadiene rubber, acrylic rubber, chloroprene rubber, urethane rubber, and silicone rubber. The compression layer may be composed of a plurality of layers having different materials and compositions. The compressed layer preferably contains 10% by mass or more and 100% by mass or less of these rubbers in total, more preferably 30% by mass or more and 100% by mass or less, and 50% by mass or more and 100% by mass or less. It is more preferable that it is contained. Further, at the time of molding the rubber material, a predetermined amount of a vulcanizing agent, a vulcanization accelerator, etc. were blended, and further, a filler such as a defoaming agent, hollow fine particles, or salt was blended as necessary to make the rubber material porous. Those are preferable. As a result, since the bubble portion is compressed with a volume change in response to various pressure fluctuations, deformation in directions other than the compression direction is small, and more stable transferability and durability can be obtained. As the porous rubber material, there are a continuous pore structure in which each pore is continuous with each other and an independent pore structure in which each pore is independent. In the present invention, any structure may be used, and these structures may be used in combination.

The hardness of the rubber used for the compression layer is a durometer type A (JIS K 6253 compliant) hardness, preferably 20 degrees or more and 80 degrees or less, and more preferably 20 degrees or more and 60 degrees or less. When the hardness of the rubber is 20 degrees or more, the resilience of the transfer material is not deteriorated, and the pressure required for transfer can be easily obtained. Further, when the hardness of the rubber is 80 degrees or less, it is possible to prevent the transfer body from being damaged due to scratches or the like when a foreign substance is sandwiched or double feeding of the recording medium occurs.

The thickness of the compression layer is preferably 0.1 mm or more and 5.0 mm or less, and more preferably 0.2 mm or more and 2.0 mm or less. If the thickness of the compression layer is 0.1 mm or more, sufficient compression characteristics can be obtained even when the transfer pressure is high. Further, when the thickness of the compression layer is 5.0 mm or less, the distortion in the shifting direction does not become large at the time of transfer, and the deterioration of the image quality can be suppressed.

[Base material]
The base material is provided to increase the strength of the transfer body in the plane direction and to improve the handleability of the transfer body to be attached to the inkjet recording apparatus. Materials used for the base material include, for example, metal materials such as aluminum, iron, and stainless steel; resin materials such as acetal resin, epoxy resin, polyimide, polyethylene, polyethylene terephthalate, nylon, and polyurethane; woven fabric, non-woven fabric, felt, and the like. Examples include cloth materials. It is also preferable to use these in combination. As the base material, a film-like material can be preferably used according to the form of the recording device to be applied or the mode of transfer to the recording medium.

The thickness of the base material is preferably 0.01 mm or more and 5 mm or less, and more preferably 0.05 mm or more and 3 mm or less. When the thickness of the base material is 0.01 mm or more, the strength required for use as a transfer material can be ensured. Further, when the thickness of the base material is 5 mm or less, the bendability is maintained, and the handleability is high in mounting on a recording device, transportation, and the like.

Various adhesives or double-sided tapes for fixing and holding these may be used between the elastic layer and the compression layer, or between the compression layer and the base material. In addition, a reinforcing layer may be provided by a film, a woven fabric, or the like in order to suppress lateral elongation when attached to the recording device or to maintain elasticity. The transfer body can also be produced by arbitrarily combining the layers made of the above materials.

The size of the transfer body can be freely selected according to the target print image size. Examples of the overall shape of the transfer body include a sheet shape, a roller shape, a drum shape, a belt shape, an endless web shape, and the like.

<Transfer-type inkjet recording device and transfer-type inkjet recording method>
An embodiment of the transfer type inkjet recording apparatus according to the present invention is shown in FIG. This transfer type inkjet recording device includes a transfer body 11 of the present invention having an image forming surface, an inkjet device 15 as an ink applying device, a roller type coating device 14 as a reaction liquid applying device, and a pressing member for transfer. It has a pressing roller (18) for transfer. The pressing roller 18 together with the transfer body 11 constitutes a transfer device for an intermediate image (ink image). The inkjet device 15 has an inkjet recording head that ejects ink. Further, the transfer type inkjet recording apparatus may have a cleaning member 19 for cleaning the surface of the transfer body 11 after transfer, if necessary.

The transfer type inkjet recording method according to the present invention includes the following steps.
-A step of forming an intermediate image (ink image) by applying ink on a transfer body using an inkjet device (intermediate image forming step).
-A step of transferring an intermediate image from a transfer body to a recording medium (transfer step).

Specifically, image recording (image formation) by the transfer-type inkjet recording method according to the present invention can be performed by the following operations using the transfer-type inkjet recording device. The reaction solution is applied to the image forming surface on the transfer body 11 by the coating roller included in the roller coating apparatus 14. An intermediate image is formed by applying ink to the image forming surface on the transfer body 11 to which the reaction solution is applied using the inkjet device 15. Then, the pressing roller 18 brings the intermediate image formed on the transfer body 11 into contact with the recording medium 17 while pressing the intermediate image, and transfers the intermediate image to the recording medium.

The transfer body 11 of the present invention can be installed on the support member 12. The support member 12 is rotationally driven in the direction of the arrow about the rotation shaft 13 of the support member, and in synchronization with the rotation, each device arranged around the support member 12 operates. Specifically, the reaction solution and the ink are sequentially applied by the reaction solution applying device 14 and the ink is sequentially applied to the moving transfer body 11, and an intermediate image (ink image) is formed on the transfer body. The intermediate image formed on the transfer body 11 is moved to the transfer portion in contact with the recording medium by the movement of the transfer body 11. While the intermediate image is in contact with the recording medium, the pressing member 18 presses the transfer body 11 through the recording medium, so that the intermediate image is transferred onto the recording medium.
The transfer body 11 is supported on the support member 12. As a method of supporting the transfer body 11, various adhesives or double-sided tape may be used. Alternatively, by attaching an installation member made of metal, ceramic, resin, or the like to the transfer body 11, the transfer body 11 may be supported on the support member 12 by using the installation member.
The support member is required to have a certain level of structural strength from the viewpoint of transport accuracy and durability. As the material of the support member, metal, ceramic, resin or the like is preferably used. Among them, the following are preferably used in order to reduce the inertia during operation and improve the responsiveness of control, in addition to the rigidity and dimensional accuracy that can withstand the pressure during transfer.
For example, metal materials such as aluminum, iron, and stainless steel; resin materials such as acetal resin, epoxy resin, polyimide, polyethylene, polyethylene terephthalate, nylon, and polyurethane; ceramic materials such as silica ceramics and alumina ceramics. It is also preferable to use these in combination. As the support member, for example, a roller shape or a belt shape can be preferably used according to the form of the recording device to be applied or the transfer mode to the recording medium. When a drum-shaped support member or a belt-shaped endless web-shaped support member is used, the same transfer body can be continuously and repeatedly used, which is extremely preferable from the viewpoint of productivity.

[Reaction solution application process]
The transfer-type inkjet recording method of the present invention preferably further includes a step of applying the reaction solution onto the transfer body (reaction solution application step) in order to form a good ink image. Further, it is preferable to apply the reaction solution to the transfer body before applying the ink. When the reaction solution comes into contact with the ink, the fluidity of the ink and / or a part of the ink composition on the transfer material can be reduced, and bleeding and beading during image formation by the ink can be suppressed. .. Specifically, the reactant contained in the reaction solution (also referred to as an ink thickening component) chemically reacts when it comes into contact with a coloring material, a resin, or the like that is a part of the composition constituting the ink. Or physically adsorb. This causes an increase in the viscosity of the entire ink and a local increase in the viscosity due to agglutination of some of the components constituting the ink such as a coloring material, resulting in a partial fluidity of the ink and / or the ink composition. Can be reduced. As a method for applying the reaction solution, various conventionally known methods can be appropriately used. For example, die coating, blade coating, gravure roller, or a combination of these with an offset roller and the like can be mentioned. It is also preferable to use an inkjet device as a method for applying the reaction solution at high speed and with high accuracy.

<Reaction solution>
Hereinafter, each component constituting the reaction solution applied to the present embodiment will be described in detail.
(Reactant)
The reaction solution agglomerates components having anionic groups (resins, self-dispersing pigments, etc.) in the ink when it comes into contact with the ink, and contains a reactant. Examples of the reactant include a cationic component such as a polyvalent metal ion and a cationic resin, and an organic acid.
Examples of the polyvalent metal ion include divalent metal ions ^{such as Ca 2+} , Cu ²⁺ , Ni ²⁺ , Mg ²⁺ , Sr ²⁺ , Ba ²⁺ and Zn ^{2+ , Fe 3+} , Cr ³⁺ , Y ³⁺ and Al ^3+. Trivalent metal ion of. In order to contain the polyvalent metal ion in the reaction solution, a polyvalent metal salt (which may be a hydrate) formed by bonding the polyvalent metal ion and the anion can be used. Examples of anions include Cl ⁻ , Br ⁻ , I ⁻ , ClO ⁻ , ClO ₂ ⁻ , ClO ₃ ⁻ , ClO ₄ ⁻ , NO ₂ ⁻ , NO ₃ ⁻ , SO ₄ ^2- , CO ₃ ^2- , and HCO _{3 as anions.} Inorganic anions such as ⁻ , PO ₄ ^3- , HPO ₄ ^2- , and H ₂ PO ₄ ^{− ; HCOO −} , (COO ⁻ ) ₂ , COOH (COO ⁻ ), CH ₃ COO ⁻ , C ₂ H ₄ (COO ^−). ) ₂ , C ₆ H ₅ COO ⁻ , C ₆ H ₄ (COO ⁻ ) ₂ and CH ₃ SO ₃ ⁻ and other organic anions can be mentioned. When polyvalent metal ions are used as the reactant, the content (% by mass) in terms of polyvalent metal salt in the reaction solution is 1.00% by mass or more and 20.00% by mass or less based on the total mass of the reaction solution. It is preferable to have.
The reaction solution containing an organic acid has a buffering capacity in an acidic region (pH less than 7.0, preferably pH 2.0 to 5.0), so that the anionic group of the component present in the ink is made into an acid type. It agglomerates. Examples of organic acids include formic acid, acetic acid, propionic acid, butyric acid, benzoic acid, glycolic acid, lactic acid, salicylic acid, pyrrolcarboxylic acid, furancarboxylic acid, picolinic acid, nicotinic acid, thiophenecarboxylic acid, levulinic acid, coumarin acid and the like. Monocarboxylic acids and salts thereof; dicarboxylic acids such as oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, maleic acid, fumaric acid, itaconic acid, sebacic acid, phthalic acid, malic acid, tartaric acid, and the like. Examples thereof include salts and hydrogen salts; tricarboxylic acids such as citric acid and trimellitic acid and salts thereof and hydrogen salts; tetracarboxylic acids such as pyromellitic acid and salts and hydrogen salts thereof. The content (mass%) of the organic acid in the reaction solution is preferably 1.00% by mass or more and 50.00% by mass or less.
Examples of the cationic resin include a resin having a structure of a primary amine and a resin having a structure of a quaternary ammonium salt. Specific examples thereof include resins having a structure such as vinylamine, allylamine, vinylimidazole, vinylpyridine, dimethylaminoethyl methacrylate, ethyleneimine, and guanidine. In order to increase the solubility in the reaction solution, the cationic resin and the acidic compound can be used in combination, or the cationic resin can be quaternized. When a cationic resin is used as the reactant, the content (mass%) of the cationic resin in the reaction solution is 1.00% by mass or more and 10.00% by mass or less based on the total mass of the reaction solution. preferable.
(Ingredients other than reactants)
As the component other than the reactant, the same components as those mentioned above as those that can be used for ink, such as an aqueous medium and other additives, can be used.

[Intermediate image formation process]
In this step, ink is applied by the inkjet device 15 to the image forming surface of the transfer body 11 to which the reaction solution is applied, and an intermediate image is formed. Inkjet devices include, for example, a form in which a film is boiled in ink by an electric-heat converter to form bubbles to eject ink, a form in which ink is ejected by an electric-mechanical converter, and an ink jet device using static electricity. Examples thereof include a discharge form. In order to perform high-speed, high-density printing, a form using an electric-heat converter is preferably used as an inkjet device. The form of the entire inkjet device is not particularly limited. A line head type head in which ink ejection ports are arranged in the traveling direction of the transfer body (axial direction in the case of a drum shape), or a shuttle type head that records while scanning the head perpendicular to the traveling direction of the transfer body. Can also be used.

<Ink>
Hereinafter, each component constituting the ink applied to the present embodiment will be described in detail.
(Color material)
As the coloring material, pigments and dyes can be used. The content of the coloring material in the ink is preferably 0.5% by mass or more and 15.0% by mass or less, and 1.0% by mass or more and 10.0% by mass or less, based on the total mass of the ink. Is more preferable.
Specific examples of the pigment include inorganic pigments such as carbon black and titanium oxide; and organic pigments such as azo, phthalocyanine, quinacridone, isoindolenone, imidazolone, diketopyrrolopyrrole, and dioxazine.
As a pigment dispersion method, a resin-dispersed pigment using a resin as a dispersant, a self-dispersing pigment in which a hydrophilic group is bonded to the particle surface of the pigment, or the like can be used. Further, a resin-bonded pigment in which an organic group containing a resin is chemically bonded to the surface of the pigment particles, a microcapsule pigment in which the surface of the pigment particles is coated with a resin or the like can be used.
As the resin dispersant for dispersing the pigment in the aqueous medium, it is preferable to use a resin dispersant capable of dispersing the pigment in the aqueous medium by the action of an anionic group. As the resin dispersant, a resin as described later can be preferably used, and more preferably a water-soluble resin can be used. The pigment content (% by mass) is preferably 0.3 times or more and 10.0 times or less in terms of mass ratio to the content of the resin dispersant (pigment / resin dispersant).
As the self-dispersing pigment, an anionic group such as a carboxylic acid group, a sulfonic acid group, or a phosphonic acid group is used, which is bonded to the particle surface of the pigment directly or via another atomic group (-R-). be able to. The anionic group may be of either an acid type or a salt type, and when it is a salt type, it may be in a state in which a part thereof is dissociated or a state in which the whole is dissociated. Examples of the cation that becomes a counter ion when the anionic group is a salt type include alkali metal cations; ammonium; organic ammonium; and the like. Specific examples of the other atomic group (-R-) include a linear or branched alkylene group having 1 to 12 carbon atoms; an arylene group such as a phenylene group or a naphthylene group; a carbonyl group; an imino group; an amide group. ; A sulfonyl group; an ester group; an ether group and the like can be mentioned. Further, a group in which these groups are combined may be used.
As the dye, it is preferable to use a dye having an anionic group. Specific examples of the dye include dyes such as azo, triphenylmethane, (aza) phthalocyanine, xanthene, and anthrapyridone.
(resin)
The ink can contain a resin. The content (mass%) of the resin in the ink is preferably 0.1% by mass or more and 20.0% by mass or less, and 0.5% by mass or more and 15.0% by mass or less, based on the total mass of the ink. Is more preferable.
The resin can be added to the ink for the reasons of (i) stabilizing the dispersed state of the pigment, that is, (ii) improving various characteristics of the recorded image as the above-mentioned resin dispersant and its auxiliary. can. Examples of the form of the resin include block copolymers, random copolymers, graft copolymers, and combinations thereof. Further, the resin may be in a state of being dissolved as a water-soluble resin in an aqueous medium, or may be in a state of being dispersed as resin particles in the aqueous medium. The resin particles do not have to contain a coloring material.
In the present invention, the fact that the resin is water-soluble means that when the resin is neutralized with an acid value and an equivalent amount of alkali, particles whose particle size can be measured by a dynamic light scattering method are not formed. do. Whether or not the resin is water-soluble can be determined according to the method shown below. First, a liquid (resin solid content: 10% by mass) containing a resin neutralized with an alkali (sodium hydroxide, potassium hydroxide, etc.) equivalent to an acid value is prepared. Next, the prepared liquid is diluted 10-fold (volume basis) with pure water to prepare a sample solution. Then, when the particle size of the resin in the sample solution is measured by the dynamic light scattering method, if the particles having the particle size are not measured, it can be determined that the resin is water-soluble. The measurement conditions at this time can be set, for example, SetZero: 30 seconds, the number of measurements: 3 times, and the measurement time: 180 seconds. As the particle size distribution measuring device, a particle size analyzer (for example, trade name “UPA-EX150”, manufactured by Nikkiso Co., Ltd.) by a dynamic light scattering method can be used. Of course, the particle size distribution measuring device and the measuring conditions to be used are not limited to the above.
The acid value of the resin is preferably 100 mgKOH / g or more and 250 mgKOH / g or less in the case of a water-soluble resin, and 5 mgKOH / g or more and 100 mgKOH / g or less in the case of resin particles. The weight average molecular weight of the resin is preferably 3,000 or more and 15,000 or less in the case of a water-soluble resin, and preferably 1,000 or more and 2,000,000 or less in the case of resin particles. The volume average particle diameter measured by the dynamic light scattering method of the resin particles (measurement conditions are the same as described above) is preferably 100 nm or more and 500 nm or less.
Examples of the resin include acrylic resins, urethane resins, and olefin resins. Of these, acrylic resins and urethane resins are preferable.
The acrylic resin preferably has a hydrophilic unit and a hydrophobic unit as constituent units. Among them, a resin having a hydrophilic unit derived from (meth) acrylic acid and a hydrophobic unit derived from at least one of a monomer having an aromatic ring and a (meth) acrylic acid ester-based monomer is preferable. In particular, a resin having a hydrophilic unit derived from (meth) acrylic acid and a hydrophobic unit derived from at least one monomer of styrene and α-methylstyrene is preferable. Since these resins are likely to interact with pigments, they can be suitably used as resin dispersants for dispersing pigments.
The hydrophilic unit is a unit having a hydrophilic group such as an anionic group. The hydrophilic unit can be formed, for example, by polymerizing a hydrophilic monomer having a hydrophilic group. Specific examples of the hydrophilic monomer having a hydrophilic group include an acidic monomer having a carboxylic acid group such as (meth) acrylic acid, itaconic acid, maleic acid, and fumaric acid, and anions such as anhydrides and salts of these acidic monomers. Examples include sex monomers. Examples of the cation constituting the salt of the acidic monomer include ions such as lithium, sodium, potassium, ammonium and organic ammonium. A hydrophobic unit is a unit that does not have a hydrophilic group such as an anionic group. The hydrophobic unit can be formed, for example, by polymerizing a hydrophobic monomer having no hydrophilic group such as an anionic group. Specific examples of the hydrophobic monomer include monomers having an aromatic ring such as styrene, α-methylstyrene, and benzyl (meth) acrylate; methyl (meth) acrylate, butyl (meth) acrylate, and (meth) acrylate 2. -Examples include (meth) acrylic acid ester-based monomers such as ethylhexyl.
The urethane-based resin can be obtained, for example, by reacting a polyisocyanate with a polyol. Further, the chain extender may be further reacted. Examples of the olefin resin include polyethylene and polypropylene.
(Aqueous medium)
The ink may contain water or an aqueous medium which is a mixed solvent of water and a water-soluble organic solvent. As the water, it is preferable to use deionized water or ion-exchanged water. The water content (mass%) in the water-based ink is preferably 50.0% by mass or more and 95.0% by mass or less based on the total mass of the ink. The content (mass%) of the water-soluble organic solvent in the water-based ink is preferably 3.0% by mass or more and 50.0% by mass or less based on the total mass of the ink. As the water-soluble organic solvent, any solvent that can be used for ink jet ink such as alcohols, (poly) alkylene glycols, glycol ethers, nitrogen-containing compounds, and sulfur-containing compounds can be used.
(Other additives)
In addition to the above components, various inks such as defoamers, surfactants, pH adjusters, viscosity regulators, rust inhibitors, preservatives, fungicides, antioxidants, antioxidants, etc. Additives may be included.

[Drying process]
The transfer-type inkjet recording method according to the present invention may include a drying step of reducing the liquid content from the formed intermediate image. In the transfer type inkjet recording apparatus shown in FIG. 3, the liquid content is reduced from the intermediate image by heating with the heater 16. If the liquid content of the intermediate image is excessive, the excess liquid may squeeze out or overflow in the next transfer step. As a result, the intermediate image may be distorted or the transferability may be deteriorated. As a method for removing the liquid component, any of various commonly used methods can be preferably applied. For example, a method of heating, a method of blowing low-humidity air, a method of depressurizing, a method of contacting an absorber, and the like can be mentioned. Further, a plurality of these may be combined. Alternatively, it can be dried by natural drying.

[Transfer process]
After the drying step, the intermediate image is brought into contact with the recording medium, and the intermediate image is transferred from the image forming surface of the transfer body to the recording medium to obtain a printed matter on which the final image is recorded. The recording medium in the present invention includes not only plain paper and glossy paper used for general printing, but also a wide range of cloth, plastic, film and other printing media. When the intermediate image comes into contact with the recording medium, the intermediate image is efficiently transferred to the recording medium by pressing the recording medium toward the transfer body with the pressing roller 18, which is preferable. It is also preferable to press in multiple steps because good transferability can be obtained.

[Cleaning process]
The transcript may be used repeatedly and continuously from the viewpoint of productivity. In that case, it is preferable to carry out a cleaning step of cleaning and regenerating the surface of the transfer body with a cleaning roller or the like before performing the next image formation. In the transfer type inkjet recording apparatus shown in FIG. 3, the surface of the transfer body is washed and regenerated by the washing roller 19. As a means for performing cleaning, any of various commonly used methods can be preferably applied. For example, a method of applying a cleaning liquid in a shower shape, a method of contacting a wet Molton roller with a surface to wipe it off, a method of bringing it into contact with the cleaning liquid surface, a method of scraping with a wiper blade, a method of applying various energies, and the like can be mentioned. Further, a plurality of these may be combined.

Examples and comparative examples of the present invention will be described below.
<Synthesis of sol composition>
Using (A) a cyclic ether group-containing silane compound, (B) an alkyl group-containing silane compound, (C) a long-chain fluorinated alkyl group-containing silane compound, and (D) a fluorinated alkyl group-containing silane compound shown in Table 1 below. Then, the sol composition was synthesized as follows.

[Example 1] (Synthesis of sol composition S01)
Each of the silane compounds shown below, acetic acid, and water were mixed, and the obtained mixture was heated at 80 ° C. for 6 hours to obtain a sol composition S1.
・ A1 86.94g (25mol%)
-B1 153.64 g (74 mol%)
・ C3 7.15g (1mol%)
-Acetic acid 0.162 g (500 ppm)
-Water 75.98 g (1.5 mol / SiOR)
Here, mol / SiOR indicating the water addition ratio is defined by the number of mols of the amount of water added per 1 mol of the hydrolyzable alkoxy group in the silane compound.
Performed ²⁹ Si-NMR measurement of S1 100 MHz, in CDCl ₃ solvent, it was 70% as calculated condensation rate from the peak integral value of the spectrum.

[Examples 2 to 26] (Synthesis of sol compositions S02 to S26)
In the amount ratio of each silane compound, acetic acid, and water shown in Table 2 below, at the reaction temperature and reaction time shown in Table 2 below, the sol compositions S02 to S02 to the same as in the synthesis of the sol composition S01 of Example 1 S26 was synthesized. For each sol composition, ^{the condensation rate calculated by 29} Si-NMR measurement is shown in Table 2.

[Comparative Examples 1 to 8] (Synthesis of Comparative Sol Compositions H01 to H08)
In the amount ratio of each silane compound, acetic acid, and water shown in Table 2 above, at the reaction temperature and reaction time shown in Table 2 below, the comparative sol composition H01 was similarly synthesized in the sol composition S01 of Example 1. To H08 were synthesized. For each sol composition, ^{the condensation rate calculated by 9} Si-NMR measurement is shown in Table 2.

<Preparation and evaluation of transcript>
Subsequently, a transcript was prepared using the obtained sol composition and evaluated.
[Example 27] (Preparation and evaluation of transcript T01)
The sol composition, the photocationic polymerization initiator CPI-410S (trade name, manufactured by San-Apro Co., Ltd.) as the photopolymerization initiator, the additive EO ((bistriethoxysilylpropyl) polyethylene oxide), and the ratio shown below. And the solvent were mixed and stirred to obtain a curable solution.
・ S01 40.0 parts by mass ・ CPI-410S 0.6 parts by mass ・ EO 7.0 parts by mass ・ PGMEA 2.4 parts by mass ・ Ethanol 40.0 parts by mass ・ Isobutyl acetate 10.0 parts by mass

Subsequently, a laminate having an elastic layer having a thickness of 200 μm formed of silicone rubber having a rubber hardness (durometer type A hardness) of 40 degrees on a PET (polyethylene terephthalate) film having a thickness of 0.05 mm as a base material. I prepared. Next, the surface of the elastic layer of this laminated body was subjected to atmospheric pressure plasma treatment. Then, the above-mentioned coating liquid for forming the surface layer portion was applied by a slit coat on the surface of the elastic layer of the laminated body subjected to the atmospheric pressure plasma treatment to form a film. Then, the coated coating liquid for forming the surface layer is exposed by irradiating it with a UV lamp (exposure amount: 1.74 J / cm ² ), and further heated at 150 ° C. for 2 hours to obtain the above. The coating liquid was cured to obtain a transfer body T01 having a surface layer portion (surface layer) constituting an image forming surface.
The film thickness of the cured product on the surface layer of the obtained transfer body T01 was measured with an optical interference film thickness meter to be 3.8 μm, and the film thickness variation σ in n20 measurement was 253 nm. Further, when the contact angle of pure water was measured on the surface of the obtained transfer body T01, it was 93 °.

Next, the obtained transfer body T01 was evaluated as follows using the transfer type inkjet recording apparatus shown in FIG. As the support member 12 of the transfer body, a cylindrical drum made of an aluminum alloy was used.
First, the reaction solution was continuously applied to the surface of the transfer body using a roller type coating device. As the reaction solution, a reaction solution having the following composition was used.
・ 30.0 parts by mass of citric acid ・ 3.5 parts by mass of potassium hydroxide ・ 5.0 parts by mass of glycerin ・ Surfactant (Product name: Megafuck (registered trademark) F444, manufactured by DIC Corporation)
3.0 parts by mass ・ Ion-exchanged water 41.5 parts by mass

Subsequently, the image-forming ink was ejected from the inkjet device onto the image-forming surface of the transfer body to form an intermediate image on the transfer body. As the inkjet device, a device of a type that ejects ink by an on-demand method using an electric-heat converter was used. As the ink, a resin-dispersed pigment ink having the following composition was used.
・ C. I. Pigment Blue 15 3.0 parts by mass ・ Styrene-acrylic acid-ethyl acrylate copolymer (acid value 240, weight average molecular weight 5000) 1.0 parts by mass ・ Glycerin 10.0 parts by mass ・ Ethylene glycol 5.0 parts by mass -Surfactant (trade name: acetylenol (registered trademark) E100, manufactured by Kawaken Fine Chemicals Co., Ltd.)
0.5 parts by mass ・ Ion-exchanged water 80.5 parts by mass

A high-quality paper (trade name: OK Prince, Oji Paper Co., Ltd., basis weight: 81.4 g / m ² ) was used as the recording medium, and the intermediate image was transferred to the recording medium to form the final image. This transfer was performed 30,000 times at a printing speed of 0.30 m / sec. Durability, intermediate image quality, and transferability were evaluated based on the following criteria from the state of the transfer body, the intermediate image, and the final image after recording 30,000 times. The evaluation results are shown in Table 3. In this evaluation, if the evaluations of durability, intermediate image quality, and transferability were all B or higher, it was judged that a transfer type transfer material for inkjet recording having high durability and transferability was obtained.

(Evaluation of durability)
The surface of the transfer material was observed with an optical microscope and evaluated according to the following criteria.
A: No cracks were found on the surface of the transfer material.
B: Slight cracks were confirmed on the surface of the transfer material.
C: Cracks were confirmed on the surface of the transfer material.
D: Many cracks were confirmed on the surface of the transfer material.
(Evaluation of intermediate image quality)
The applicability of the reaction solution on the surface of the transfer material, which is closely related to the intermediate image quality, and the intermediate image were observed with an optical microscope and evaluated according to the following criteria.
A: The reaction solution was uniformly applied without repelling, and the intermediate image was well formed.
B: A slight repelling of the reaction solution was confirmed, but it was sufficient as an intermediate image.
C: Repulsion of the reaction solution was confirmed, and a part of the intermediate image was of a quality that could not be said to be sufficient.
D; Remarkable repelling of the reaction solution was confirmed, and the quality of the intermediate image was not sufficient as a whole (evaluation of transferability).
The image quality of the ink image on the transfer body after transfer and the final image formed on the recording medium was observed with an optical microscope and evaluated according to the following criteria.
A: No ink image remains on the transfer body, and the final image is well formed.
B: A little residue of the ink image was confirmed on the transfer body, but the quality of the final image was sufficient.
C: A little ink image remained on the transfer body, and a part of the final image was not sufficiently transferred.
D; The ink image remained on the transfer body, and the final image was not sufficiently transferred as a whole.

[Examples 28 to 52] (Preparation and evaluation of transcripts T02 to T26)
Transfers T02 to T26 were prepared in the same manner as in Example 27 except that the sol compositions S02 to S26 were used instead of the sol composition S01 in Example 27, and the obtained transfer material was described in Examples. The same evaluation as in 27 was performed. The results are shown in Table 3.

[Comparative Examples 9 to 16] (Preparation and evaluation of transcripts U01 to U08)
Transferred bodies U01 to U08 were prepared in the same manner as in Example 27 except that the sol compositions H01 to H08 were used instead of the sol composition S01 in Example 27, and the obtained transferred bodies were described in Examples. The same evaluation as in 27 was performed. The results are shown in Table 3.
In the evaluations of Examples 27 to 52 using the transcript using the sol composition of the present invention, the evaluation was B or higher in all the evaluations, and the sol composition for the transcript was excellent.
In particular, when Examples 27 to 33 are compared, it was found that the sol compositions S02 to S04 having a ratio of the cyclic ether group-containing silane compound (A) of 30 mol% or more and 50 mol% or less are preferable as the sol composition for the transcript. rice field.
Further, the sol compositions S18 to 21 of Examples 29 and 18 to 21 (acid concentration: 0, 250, 1000, 1500 ppm in order) using the sol composition S03 (acid concentration: 500 ppm) of Example 3, respectively. Comparing Examples 44 to 47 used, it was found that in the same composition, the sol compositions S03, S19 and S20 reacted at an acid concentration of 250 ppm or more and 1000 ppm or less were more preferable.
Further, in Examples 48 to 52, it was found that the sol compositions S22 to S26 using the (D) alkyl fluoride group-containing silane compound as the fourth component are more preferable as the sol composition for the transcript.

1 Transfer 2 Surface layer

Claims (9)

(A) The following general formula [1]

[In the formula, X represents an organic group containing a cyclic ether group having 2 or 3 carbon atoms constituting the ring. R ¹ and R ² each independently represent a linear or branched alkyl group having 1 to 6 carbon atoms. n represents 0 or 1. ]
Cyclic ether group-containing silane compound represented by
(B) The following general formula [2]

[In the formula, Z represents a linear or branched alkyl group having 1 to 6 carbon atoms. R ³ and R ⁴ independently represent a linear or branched alkyl group having 1 to 6 carbon atoms. m represents 0 or 1. ]
Alkyl group-containing silane compound represented by
(C) The following general formula [3]

[In the formula, Y ¹ represents a linear or branched alkyl fluoride group having 9 to 25 fluorine atoms and 4 to 14 carbon atoms. R ⁵ and R ⁶ each independently represent a linear or branched alkyl group having 1 to 6 carbon atoms. p represents 0 or 1. ]
A long-chain alkyl fluoride group-containing silane compound represented by
A sol composition for a transfer body for transfer type inkjet recording, which comprises a hydrolyzed condensate of the above.
A sol composition characterized by having a condensation rate of 45% or more and 70% or less of the hydrolyzed condensate. The hydrolyzed condensate is characterized by containing 30 mol% or more and 70 mol% or less of units derived from the cyclic ether group-containing silane compound represented by the above formula [1] based on the total number of moles of units derived from all silane compounds. The sol composition according to claim 1. The hydrolyzed condensate contains 0.1 mol% or more and 5 mol% or more of the units derived from the long-chain alkyl fluoride group-containing silane compound represented by the above formula [3] based on the total number of moles of the units derived from all the silane compounds. The sol composition according to claim 1 or 2, which comprises the following. The sol composition according to any one of claims 1 to 3, wherein both n and m are 1. The hydrolyzed condensate
(A) A cyclic ether group-containing silane compound represented by the above formula [1] and
(B) An alkyl group-containing silane compound represented by the above formula [2] and
(C) A long-chain alkyl fluoride group-containing silane compound represented by the above formula [3] and
(D) The following general formula [4]

[In the formula, Y ² represents a linear or branched alkyl fluoride group having 3 to 8 fluorine atoms and 1 to 6 carbon atoms. R ⁷ and R ⁸ represent linear or branched alkyl groups having 1 to 6 carbon atoms, respectively. q represents 0 or 1. ]
A silane compound containing an alkyl fluoride group represented by
The sol composition according to any one of claims 1 to 4, which is a hydrolyzed condensate of the above. The hydrolyzed condensate contains 1 mol% or more and 50 mol% or less of the units derived from the alkyl fluoride group-containing silane compound represented by the above formula [4] based on the total number of moles of the units derived from all the silane compounds. The sol composition according to claim 5, which is characterized. A transfer body for transfer type inkjet recording having at least a surface layer portion.
A transfer product, which comprises at least a cured product of the sol composition according to any one of claims 1 to 6 on the surface layer portion. A transfer-type inkjet recording apparatus comprising the transfer body according to claim 7. A process of forming an ink image by applying ink on a transfer body using an inkjet device, and
A step of transferring the ink image from the transfer body to a recording medium,
It is a transfer type inkjet recording method including
A transfer-type inkjet recording method, wherein the transfer body is the transfer body according to claim 7.

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