JP3993252B2 - Recording material - Google Patents

Description

【００５６】
実施例１および３の記録材料は、全ての評価において優れていた。実施例２および４の記録材料は、支持体として和紙でサンドしたフィルムを使用しているため、実施例１および３よりも更に定着熱による波打ちが減少していた。
【００５７】
比較例１および２は定着熱による波打ちが大きかった。比較例３および４はほとんどの評価において優れているものであった。しかし、比較例３および４は実施例１〜４の記録材料に比べると幾つかの評価で若干劣るものであった。この点からも、実施例１〜４の記録材料はすべての評価において非常に優れていることが分かる。
【００５８】
また、比較例１〜４は製造時に発生する臭いがひどかったが、実施例１〜４は臭いが少なかった。
【００５９】
【発明の効果】
本発明の記録材料は、複写時の定着熱によっても波打ちがほとんど起こることなく、トナー定着性、鉛筆及び水性インクの筆記性、鉛筆画線の消去性、耐溶剤性（トナー消去性）などの性能を満足するものである。また、本発明の記録材料は製造工程時の臭いも非常に少ないものである。[0001]
[Industrial application fields]
The present invention relates to a recording material suitable for an electrophotographic copying machine, a laser printer, and the like.
[0002]
[Prior art]
In recent years, the output to various slips, securities, bankbooks, and the like is mostly made by a laser printer or the like by computer processing. Also in the second original drawing, the method using a conventional photosensitive material is shifting to a method using a laser printer or an electrophotographic copying machine.
[0003]
As a recording material used in such a laser printer or an electrophotographic copying machine, there is a recording material using a polyester film as a base material for obtaining strength and dimensional stability, and having an easy toner adhesion layer thereon. Further, since such a recording material is often written with a pencil, water-based ink or the like after being output by a laser printer or the like, a mat layer is provided on the substrate.
[0004]
[Problems to be solved by the invention]
However, with the recent increase in the speed of laser printers and electrophotographic copying machines, the toner fixing temperature has become extremely high, and those using a polyester film as a support cause thermal deformation and hinder use. . Therefore, there is a need for a recording material that does not cause thermal deformation even at a fixing temperature, such as a laser printer.
[0005]
As such a recording material, it is conceivable to use a plastic with extremely high heat resistance for the base material, but such a material is very expensive, and it is not possible to use it for slips and the second original drawing film. Not realistic.
[0006]
Accordingly, the present inventor has improved the mat layer provided on the base material to reduce the waviness caused by the fixing heat during copying, and to fix the toner, writing performance of pencil and water-based ink, solvent resistance (toner erasing) Therefore, the present invention has been completed.
[0007]
[Means for Solving the Problems]
The recording material of the present invention has a structure in which a mat layer composed of a binder resin and a matting agent is provided on both sides of a support, wherein the support is a plastic film, and 60% by weight or more in the binder resin is a silicone resin. In addition, the matting agent is contained in an amount of 5 to 75% by weight with respect to the binder resin. The recording material of the present invention has a structure in which a mat layer composed of a binder resin and a matting agent is provided on both sides of a support, and the support is obtained by bonding Japanese paper or Western paper on both sides of a plastic film. 60% by weight or more of the binder resin is a silicone resin, and the matting agent is contained in an amount of 5 to 75% by weight based on the binder resin. The recording material of the present invention comprises an antistatic layer provided on the mat layer.
[0008]
The present invention is described in detail below.
[0009]
Examples of the support include plastic films made of polyester, polycarbonate, cellulose acetate, polyimide, polyethylene, polystyrene, polypropylene, and the like. Among these, a polyester film is particularly preferable from the viewpoints of price, flatness, and the like.
[0010]
Moreover, what bonded the Japanese paper or the western paper through the adhesive agent on both surfaces of such a film as a support body can also be used. Such a material not only increases the texture and texture, but also has the effect of reducing the undulation caused by the fixing heat during copying.
[0011]
As the raw material for Japanese paper, straw, hemp, sanban, and husk can be used, and as the raw material for paper, wood pulp, synthetic pulp, etc. can be used, and those having a basis weight of 6-29 g / m ² , preferably 9-15 g / m ² Suitable for the present invention.
[0012]
When bonding Japanese paper or Western paper to a plastic film, an adhesive is usually used. Examples of the adhesive used include urea, phenol, resorcinol, epoxy, urethane, polyester, isocyanate, vinyl acetate, acrylic, cyanoacrylate, copolymer nylon, and modified rubber. Examples include adhesives.
[0013]
The mat layers provided on both sides of the support are composed of a binder resin and a mat agent.
[0014]
As the binder resin, a silicone resin is used. As the silicone resin, in addition to pure silicone resin, silicone resin modified with alkyd resin, polyester resin, epoxy resin, acrylic resin, urethane resin, or the like can be used.
[0015]
As the binder resin, various resins can be used in combination with the silicone resin. Even in this case, the content of the silicone resin in the binder resin is set to 60% by weight or more. Furthermore, it is more preferable to set it as 90 weight% or more. By setting the amount to 60% by weight or more, undulation caused by heat is reduced, and the toner fixing property, solvent resistance, and writing property of water-based ink are remarkably improved.
[0016]
Examples of the resin other than the silicone resin used as the binder resin include alkyd resins, acrylic resins, melamine resins, epoxy resins, phenol resins, styrene-maleic acid resins, and butyral resins. By blending these resins with a silicone resin, the heat resistance is slightly inferior, but it is possible to adjust the flexibility, the toner fixing property, and the writing property of the water-based ink.
[0017]
As the matting agent, known matting agents such as inorganic particles such as silica, alumina, calcium carbonate and magnesium carbonate, and polymer particles such as acrylic resin, styrene resin and silicone resin can be used. By using a matting agent having a particle size of 1.0 to 10 μm, preferably 2.0 to 5.0 μm, toner fixability, pencil and water-based ink writing properties are very good.
[0018]
The mixing ratio of the matting agent is 5 to 75% by weight, more preferably 10 to 30% by weight, based on the solid content of the binder resin. This is because in such a range, performances such as toner fixing properties and writing properties of pencils and water-based inks are remarkably improved.
[0019]
In addition to the binder resin and the matting agent described above, a curing catalyst, an antistatic agent, a coating property improving agent, an ultraviolet absorber, a dye, and the like can be appropriately added to the matting layer. In particular, when platinum, lead, iron, manganese, zinc, and these metal soaps are used as a curing catalyst, the silicone resin can be cured at a low temperature, and the flatness deterioration of the recording material during production can be eliminated. .
[0020]
Further, if necessary, an antistatic layer or the like can be provided on the mat layer with a thickness that does not impair the performance of the mat layer.
[0021]
The above-described mat layer and the like are prepared by dissolving or dispersing the above-described materials in a solvent to prepare a coating solution, and known coating methods such as a roll coating method, a kiss coating method, a reverse coating method, a bar coating method, and a gravure coating method. It forms by apply | coating and drying using etc.
[0022]
[Action]
Since the recording material of the present invention uses a specific mat layer, it reduces waviness caused by fixing heat at the time of copying, and has toner fixing properties, writing properties of pencils and water-based inks, and solvent resistance (toner erasability). Satisfy everything.
[0023]
【Example】
Hereinafter, the present invention will be described in detail by way of examples. In the examples, “%” and “parts” are based on weight unless otherwise specified.
[0024]
[Example 1]
A mat layer coating solution having the following composition was prepared, applied to both sides of a 50 μm thick polyester film with a gravure coater so as to be ² g / m ² , and dried at 120 ° C. for 1 minute to form a mat layer.
[0025]
(Matte layer coating solution)
-Pure silicone varnish (solid content: 50%) 49 parts (TSR116: Toshiba Silicone)
・ Silica (average particle size 3.5 μm) 5 parts (Silycia 445: Fuji Silysia Chemical Ltd.)
・ Catalyst (CR13: Toshiba Silicone) 1 part ・ Methyl ethyl ketone 20 parts ・ Toluene 25 parts
Next, an antistatic agent layer coating solution having the following composition was applied on both surfaces of the resulting mat layer with a gravure coater so as to be 1 g / m ^2, and dried at 110 ° C. for 30 seconds to obtain a recording material. Obtained.
[0027]
(Antistatic agent coating solution)
・ Acrylic resin emulsion (solid content: 43%) 10 parts (Joncryl 840: Johnson Polymer)
・ 55 parts of methacrylic acid ester (Nicazole RX66P: Nippon Carbide)
・ Antistatic agent 5 parts (VERSA TL-125: Kanebo NSC)
・ Water 20 parts ・ Meta-modified alcohol 10 parts 【0028】
[Example 2]
A urethane adhesive was applied to both sides of a 50 μm thick polyester film with a gravure coater so as to be 3 g / m ^2, and after drying, 13 g / m ² of Japanese paper was bonded to both sides to prepare a support.
[0029]
A mat layer coating solution having the following composition was prepared, applied to both surfaces of the support obtained as described above by a gravure coater to 2 g / m ² , dried at 120 ° C. for 1 minute to form a mat layer, A recording material was obtained.
[0030]
(Matte layer coating solution)
-Pure silicone varnish (solid content 50%) 49 parts (TSR116: Toshiba Silicone)
・ Silica (average particle size 3.5 μm) 5 parts (Silycia 445: Fuji Silysia Chemical Ltd.)
・ Catalyst (CR12: Toshiba Silicone) 0.5 part ・ Antistatic agent 0.5 part (Staticide: Analytical Chemical Laboratory)
・ Methyl ethyl ketone 20 parts ・ Toluene 25 parts 【0031】
[Example 3]
A mat layer coating solution having the following composition was prepared, applied to both sides of a 50 μm thick polyester film with a gravure coater so as to be ² g / m ² , and dried at 120 ° C. for 1 minute to form a mat layer.
[0032]
(Matte layer coating solution)
・ Pure silicone varnish (solid content 50%) 45 parts (TSR144: Toshiba Silicone)
・ Acrylic resin (solid content 45%) 5 parts (Acridic A-166: Dainippon Ink and Chemicals)
・ Silica (average particle size 3.5 μm) 5 parts (Silycia 445: Fuji Silysia Chemical Ltd.)
・ Catalyst (CR12: Toshiba Silicone) 0.5 part ・ Ethyl acetate 44.5 parts
Next, the antistatic agent layer coating solution used in Example 1 was applied to both surfaces of the obtained mat layer with a gravure coater so as to be 1 g / m ² , dried at 110 ° C. for 30 seconds, and recorded. Obtained material.
[0034]
[Example 4]
A urethane adhesive was applied to both sides of a 50 μm thick polyester film with a gravure coater so as to be 3 g / m ^2, and after drying, 13 g / m ² of Japanese paper was bonded to both sides to prepare a support.
[0035]
A mat layer coating solution having the following composition was prepared, applied to both surfaces of the support obtained as described above by a gravure coater to 2 g / m ² , dried at 120 ° C. for 1 minute to form a mat layer, A recording material was obtained.
[0036]
(Matte layer coating solution)
・ Pure silicone varnish (solid content 50%) 50 parts (TSR144: Toshiba Silicone)
・ Silica (average particle size 3.5 μm) 5 parts (Silycia 445: Fuji Silysia Chemical Ltd.)
・ Catalyst (CR13: Toshiba Silicone) 1.5 parts ・ Ethyl acetate 43.5 parts
[Comparative Example 1]
A mat layer coating solution having the following composition is prepared and applied to both sides of a 50 μm thick polyester film with a gravure coater to a dry thickness of 2 g / m ² and dried at 120 ° C. for 1 minute to form a mat layer. A recording material was obtained.
[0038]
(Matte layer coating solution)
・ Acrylic polyol (solid content 50%) 50 parts (Acridic A-808: Dainippon Ink & Chemicals, Inc.)
・ Isocyanate curing agent 5 parts (Takenate A-10: Takeda Pharmaceutical Company Limited)
・ Silica (average particle size 3.5 μm) 5 parts (Silicia 740: Fuji Silysia Chemical Ltd.)
・ Methyl ethyl ketone 20 parts ・ Toluene 20 parts 【0039】
[Comparative Example 2]
The antistatic agent coating solution used in Example 1 was applied on both surfaces of the mat layer of the recording material obtained in Comparative Example 1 with a gravure coater so as to be 1 g / m ^2, and at 110 ° C. for 30 seconds. The recording material was obtained by drying.
[0040]
[Comparative Example 3]
A urethane adhesive was applied to both sides of a 50 μm thick polyester film with a gravure coater so as to be 3 g / m ^2, and after drying, 13 g / m ² of Japanese paper was bonded to both sides to prepare a support.
[0041]
A mat layer coating solution having the following composition was prepared, applied to both sides of the support obtained as described above with a gravure coater to a dry thickness of 2 g / m ² , and dried at 120 ° C. for 1 minute to obtain a recording material. It was.
[0042]
(Matte layer coating solution)
・ Acrylic polyol (solid content 50%) 50 parts (Acridic A-801: Dainippon Ink & Chemicals, Inc.)
・ Isocyanate curing agent 5 parts (Takenate A-10: Takeda Pharmaceutical Company Limited)
・ Silica (average particle size 2.5 μm) 5 parts (Silycia 435: Fuji Silysia Chemical Ltd.)
・ Methyl ethyl ketone 20 parts ・ Toluene 20 parts
[Comparative Example 4]
The antistatic agent layer coating solution used in Example 1 was applied to both sides of the mat layer of the recording material obtained in Comparative Example 3 with a gravure coater so as to be 1 g / m ^2, and at 110 ° C. for 30 seconds. The recording material was obtained by drying.
[0044]
The recording materials obtained in the above examples and comparative examples were evaluated as follows.
[0045]
“Wavy”: A XEROX 5080 (A0 size large copying machine) was used, and what was drawn on the recording material was visually evaluated.
[0046]
“Toner fixability”: A peeling test was performed in which a toner image drawn on a recording material using XEROX 5080 was rubbed with a finger and a cellophane tape (No. 405: Nichiban Co., Ltd.) was applied and peeled off.
[0047]
“Toner erasability”: Using a correction liquid (Spartol L: Kimoto Co.), the toner image was erased, and the toner erasability and the state of the coating film after erasure were visually evaluated.
[0048]
“Pencil writing property”: Writing was performed with a 2H, HB pencil (uni: Mitsubishi Pencil Co., Ltd.), and the jumping and disturbance of the image line were visually evaluated.
[0049]
"Pencil erasability": Write with a 2H pencil (uni: Mitsubishi Pencil Co., Ltd.) and erase the image with an eraser. The erased portion was visually inspected and the degree of ghost (disappearance) was evaluated.
[0050]
“Ink Writability”: Writing was performed using a drawing ink (Castel TG-1), and the thickening and wrinkling of the image line were evaluated.
[0051]
“Printability”: Offset printing was performed to evaluate the fixability of UV ink and the stain on the substrate of the printed material.
[0052]
"AS property": The surface electrical resistance value was measured by leaving it for 2 hours under conditions of 20 ° C and 65% RH.
[0053]
The evaluation results are shown in Table 1.
[0054]
In the above evaluations, “」 ”indicates very good,“ ◯ ”indicates excellent,“ Δ ”indicates slightly inferior, and“ × ”indicates inferior.
[0055]
[Table 1]

[0056]
The recording materials of Examples 1 and 3 were excellent in all evaluations. In the recording materials of Examples 2 and 4, since a film sanded with Japanese paper was used as a support, undulation due to fixing heat was further reduced as compared with Examples 1 and 3.
[0057]
In Comparative Examples 1 and 2, the waviness due to the fixing heat was large. Comparative Examples 3 and 4 were excellent in most evaluations. However, Comparative Examples 3 and 4 were slightly inferior in some evaluations as compared with the recording materials of Examples 1 to 4. Also from this point, it can be seen that the recording materials of Examples 1 to 4 are excellent in all evaluations.
[0058]
Moreover, although the odor which generate | occur | produces at the time of manufacture was bad in Comparative Examples 1-4, Examples 1-4 had little odor.
[0059]
【The invention's effect】
The recording material of the present invention is almost free of undulation due to fixing heat at the time of copying, and has performance such as toner fixing property, pencil and water-based ink writing property, pencil stroke erasing property, and solvent resistance (toner erasing property). Is satisfied. Also, the recording material of the present invention has very little odor during the manufacturing process.

Claims (3)

In a recording material in which a mat layer composed of a binder resin and a matting agent is provided on both sides of the support , the support is a plastic film, 60% by weight or more of the binder resin is a silicone resin, and the matting agent Is contained in an amount of 5 to 75% by weight based on the binder resin. In a recording material in which a mat layer composed of a binder resin and a matting agent is provided on both sides of a support, the support is obtained by pasting Japanese paper or Western paper on both sides of a plastic film, and is 60% by weight or more in the binder resin. Is a silicone resin, and the matting agent is contained in an amount of 5 to 75% by weight based on the binder resin. The recording material according to claim 1, wherein an antistatic layer is provided on the mat layer.