JPH06295155A - Image receptor - Google Patents

Abstract

(57) [Summary] [Construction] The image receptor of the present invention comprises a label and a separator that is detachably temporarily attached to the label, and the label has an antistatic treatment layer having a surface resistance of 10 ⁶ to 10 ¹³ Ω / □. And a toner adhesion treatment layer on the front surface, and a label substrate made of a synthetic resin film having an adhesive layer on the back surface, the separator has a release layer on the front surface, an antistatic agent layer and a mat on the back surface. An image receptor comprising a separator substrate made of a synthetic resin film provided with a treatment layer, wherein the label substrate and / or the separator substrate has a density of 0.6 to 1.2 g / cm ^3. The toner transfer image receptor of the present invention exhibits stable running properties in both high-speed printing devices and low-speed printing devices.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image receptor used in a printing apparatus using a toner electrostatic transfer method. The image receptor of the present invention has excellent heat resistance and can be printed by both high-speed and low-speed models.

[0002]

2. Description of the Related Art Recently, PPC (Plain Paper Cop
In addition to y), there are various devices such as electrophotographic and laser beam systems. Examples of the recording paper used in these devices include general-purpose paper including OHP paper and tack sheets. Tack sheets are mainly used as label base materials such as barcodes and posters.

As a general layer structure of this tack sheet, an adhesive resin layer is provided on the film on the label side in order to improve the adhesion of the toner, or the surface conductivity is increased to reduce electrostatic charge and It has been devised to obtain stable driving performance.

As a base material for these labels and separators, conventionally, coated paper has been mainly used. But,
Reusable items such as barcodes may break and are not practical. Further, in a high-humidity area, there are many deformations due to moisture, and synthetic paper is preferable as the base material. As the base material of such synthetic paper, polypropylene is mainly used alone or in a laminated form. These synthetic papers are less likely to be damaged by reuse, but the heat of the fixing roll (140
(-150 ° C) causes remarkable curling.

[0005]

However, in recent years,
Printing speeds are becoming ever higher and higher fixing temperatures are required, and the use of thermally stable heat resistant films is being considered. In a label image receptor using such a base film, deformation and curling are not observed at a normal fixing roll temperature (130 to 150 ° C), but at a higher temperature fixing roll (for example, 200 ° C), the label side and the separator side are not affected. The heat shrinkage is different, causing significant curling and deformation.

In order to solve such a problem, it has been proposed to use the same synthetic resin film as the film substrate on the label side and the separator side (see Japanese Utility Model Application No. 61-117334). However, since such an image receptor is a laminate of synthetic resin films,
Usually, the density is about 1.4g / cm ³ , and it has high rigidity.
The total weight per sheet is also large. Specifically, if the transport path inside the device is complicated, if the rigidity of the film is high, it will stop in the middle of the path. There was a printing failure due to. The object of the present invention is to provide a high-speed printing device,
An object of the present invention is to provide an image receptor for toner transfer, which exhibits stable running properties for any low-speed printing device.

[0007]

Means for Solving the Problems As a result of intensive studies for solving the above problems, the present inventors have found that a synthetic resin film having a low density is used even when a synthetic resin film is used as a substrate. The present invention has been completed by finding that an image receptor that can be stably run can be obtained by using it.

That is, the present invention is an image receptor comprising a label body and a separator which is detachably temporarily attached to the label body, wherein the label body has an antistatic treatment layer having a surface resistance of 10 ⁶ to 10 ¹³ Ω / □ and a toner. A label base made of a synthetic resin film having an adhesive treatment layer on the front surface and an adhesive layer on the back surface, the separator has a release layer on the front surface, an antistatic agent layer and a matte treatment layer on the back surface. And a separator base material made of a synthetic resin film provided with, and the density of the label base material and / or the separator base material is 0.6 to 1.2 g / cm.
^The present invention provides an image receptor characterized by being ³ .

FIG. 1 is a sectional view showing a specific example of the image receptor of the present invention. In FIG. 1, the image receptor 1 of the present invention comprises a label body 10 and a separator 11. A toner attachment treatment layer 3 is provided on the surface of the label base material 2 of the label body 10, and an antistatic treatment layer 4 is further provided thereon. An adhesive layer 9 is provided on the back surface of the label substrate 2 and is temporarily attached to the separator. On the other hand, the release layer 6 is provided on the surface of the separator substrate 5 of the separator 11. Further, a matte treatment layer 7 is provided on the back side of the separator substrate 5, and an antistatic treatment layer 8 is further provided thereon.

As the base material 2 and the base material 5 of the label body and the separator, a film having a heat resistant temperature of 100 ° C. or more such as a polyester film, a polyimide film, a polycarbonate film, a cellulose ester film or a polyamide film is used. By using such a base material, a stable image can be obtained without significant deformation due to heat from the fixing roll and heat fusion to the fixing roll. The thickness of these substrates is usually preferably 20 to 150 μm. The base material preferably contains calcium carbonate, titanium oxide powder, silica or the like in order to improve whiteness. Further, the synthetic resin film itself may be a film containing voids.

The density of the synthetic resin film of these substrates is usually about 1.3 to 1.5 g / cm ³ , but in the image receptor of the present invention, a synthetic resin film having a density of 0.6 to 1.2 g / cm ³ is used. use. As a method for reducing the density in this way, various known methods are used, but there is a method in which a film filled with titanium oxide or the like is stretched to form voids inside.
When these low-density synthetic resin films are used as the base material, the base material has no rigidity, and thus the transportability through a complicated path in the apparatus is improved. Further, since the base material has a low density, the weight per sheet becomes light, which is advantageous for picking up and carrying from the paper kit.

Generally, the weight of paper is about 3.1 for plain paper.
It is about 3.8 g and about 8.3 to 8.5 g for an OHP film, and if the weight per sheet exceeds 12 g, trouble is likely to occur. Base film density is 1.4
When a normal synthetic film of about 1.5 g / cm ³ is used, the weight per sheet exceeds 12 g, which is considered to cause a trouble. The density of at least one of the base material on the label side and the separator side of this image receptor is set to 0.6 to 1.2.
The weight per sheet is reduced by using g / cm ³ . However, with a synthetic resin film having a density of less than 0.6 g / cm ³ , the film itself has no strength and causes problems in processability during transportation in the apparatus. On the other hand, if the density exceeds 1.2 g / cm ³ , the weight and rigidity per sheet are increased and the transportability is deteriorated.

A toner adhering treatment layer 3 having good adhesion to the toner is provided on the base material. As the toner attachment treatment layer 3, a conventionally known organic solvent-soluble resin in which one type or a mixture of two or more types such as alcohol type, ketone type and chlorinated hydrocarbons is used. Examples of such resins include resins such as polyolefin resins, polyester resins, and acrylic resins. The thickness of these resin layers is preferably 0.1 to 5 μm.

Further, an antistatic treatment layer 4 is provided on the toner attachment treatment layer, and has a surface specific resistance value of 1 × 10 ⁸ -1.
It is adjusted to × 10 ¹³ Ω to prevent electrification. When the surface resistivity is smaller than this, the toner sticking property is deteriorated, while when it is larger than this, the running property in the apparatus is deteriorated.

A matting treatment may be carried out to prevent blocking during high temperature storage and to secure a more stable running property. The matte treatment can be carried out by various methods, but a method of adding powder is generally preferred. As such powder, silica having a particle diameter of 0.1 to 10 μm,
Calcium carbonate and the like are preferable. 0.1 to 0.1% of these in the resin
It is preferable to add 30% by weight. Further, a mat layer may be independently provided as an undercoat layer of the toner adhering layer.

An adhesive layer is provided on the back surface of the base material of the label body. It is preferable that the adhesive layer has no adhesive protrusion under the pressure required for the fixing roll. It is preferable that this adhesive force is more easily peeled off than the separator, and that the label body and the separator are not peeled off during transportation.

On the other hand, the separator substrate is subjected to a release treatment such as a silicone treatment in order to facilitate separation from the label substrate. Silicone resin is generally applied for release treatment, and the applied amount is 0.05-1 μm.
m is preferred.

The back surface of these separator substrates may be matted so as to prevent blocking or ensure stable running. As the matting agent, silica or calcium carbonate having a particle size of 0.1 to 10 μm is used, and may be contained in the resin in an amount of 0.1 to 30% by weight, or as an undercoat layer of the antistatic treatment layer. The mat layer may be provided independently.

Further, like the label side, it is preferable to control the conductivity of the back surface in order to facilitate the adhesion and running of the toner. The specific surface resistance of the back of the separator is 1 x 10 ⁸
Ω to 1 × 10 ¹³ Ω. If this resistance value is smaller than this value, the toner adhering property is deteriorated, while if it is larger than this value, the running property in the apparatus is deteriorated.

[0020]

EXAMPLES Examples of the present invention will be described below, but the present invention is not limited to these examples.

[Example 1] A white polyethylene terephthalate (foamed white PET) film (G
1919, manufactured by Toyobo Co., Ltd., film thickness 50 μm) was used. The density of this synthetic resin film was 1.10 g / cm ³ . A matting agent as a toner attachment treatment layer on this surface side
(VM Mat M-6, manufactured by Dainichiseika Co., Ltd.) with toluene 2
It was diluted to 0% and was applied with a wire bar # 10 so as to have a dry film thickness of 3 μm. Drying was performed at 100 ° C. for 3 minutes.

Then, an antistatic agent (Electrostripper QN, manufactured by Kao Co., Ltd.) diluted with ethanol to a 2% solution was applied on the toner-adhered layer by a wire bar # 5 so that the dry film thickness was about 0.1 μm. Was applied to form an antistatic treatment layer. Drying was performed at 100 ° C. for 1 minute. The surface resistance on the label side of the obtained label body is HirestaIP-HT2.
60 (manufactured by Mitsubishi Petrochemical Co., Ltd.) 2.35 × 10
It was ¹² Ω / □.

A white polyethylene terephthalate (white PET) film (E-20, manufactured by Toray Industries, Inc., film thickness 75 μm, density 1.43 g / cm ³ ) was used as a separator substrate. Silicone (7223A and B, Shin-Etsu Silicon Co., Ltd.) diluted to a 2% solution with hexane on the front side of this film
)) Solution with wire bar # 5 to a dry film thickness of about 0.1μ
The coating was applied so as to have a thickness of m to form a release layer. Dry at 100 ℃
At 10 seconds.

As a matte treatment on the back side, a matting agent is used.
(VM Mat M-6, manufactured by Dainichiseika Co., Ltd.) with toluene 2
It was diluted to 0% and applied with a wire bar # 10 so that the dry film thickness was 3 μm. Drying was performed at 100 ° C. for 3 minutes. Then, add 2% of ethanol on this matte treatment.
Antistatic agent diluted in solution (Electrostriper Q
N, manufactured by Kao Co., Ltd.)) was coated with a wire bar # 5 so that the dry film thickness was about 0.1 μm. Dry at 100 ℃
It went for 1 minute. The surface resistance of the back side of the obtained separator was 3.12 × 10 ¹² Ω / □ when measured with Hiresta (IP-HT260, manufactured by Mitsubishi Petrochemical Co., Ltd.).

Next, an adhesive was applied to the back surface of the label body thus obtained. As the adhesive, an acrylic temporary adhesive was diluted with toluene to a 15% solution, and the resulting solution was applied with an applicator (scale 6) so that the dry film thickness was 10 μm. Drying was performed at 100 ° C. for 3 minutes.

The label layer was temporarily attached with a hand roller so that the siliconized surface of the separator was in contact with the adhesive layer surface of the label body, and then cut into a length of 210 mm × 297 mm to obtain an image receptor. The cross-sectional structure of the obtained image receptor is shown in FIG. The total weight was 11.77 g. This label image receptor was subjected to a print test of 50 sheets in a test mode of 6790LPS (manufactured by Fuji XEROX Co., Ltd.) and the runnability was observed. As the observation items, misalignment printing due to slip during transportation and running failure were evaluated. Regarding poor running, the pick-up property from the printing roller and the paper feed port was observed. The results are shown in Table 1. The cross-sectional structure of the obtained printed matter is shown in FIG.

[Example 2] An image receptor was obtained in the same manner as in Example 1 except that the substrate was changed. That is, as the white PET on the label side, a film having a density of 1.43 g / cm ³ and a film thickness of 50 μm was used. Also, the white PET on the separator side is
A film having a density of 1.1 g / cm ³ and a film thickness of 75 μm was used. The total weight of the image receptor was 11.26 g. The image receptor thus obtained was evaluated in the same manner as in Example 1. The results are shown in Table 1.

[Example 3] An image receptor was obtained in the same manner as in Example 1 except that the substrate was changed. That is, the white PET on the label side had a density of 1.0 g / cm ³ and a film thickness of 50 μm. The white PET on the separator side has a density of 1.1 g / c.
The film thickness was m ³ and the film thickness was 75 μm. The total weight of the image receiver was 9.85 g. The image receptor thus obtained was evaluated in the same manner as in Example 1. The results are shown in Table 1.

[Comparative Example 1] An image receptor was obtained in the same manner as in Example 1 except that the substrate was changed. That is, the white PET on the label side had a density of 1.43 g / cm ³ and a film thickness of 50 μm. The density of white PET on the separator side is 1.43 g / cm ³ ,
The film thickness was 75 μm. The layer weight of the image receptor is 1
It was set to 3.0 g. The image receptor thus obtained was evaluated in the same manner as in Example 1. The results are shown in Table 1.

[Table 1] ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Misaligned printing in the printing section Running failure ━━━━━━ ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Example 1 0/50 0/50 2 0/50 0/50 3 0/50 0/50 Comparative Example 1 5/50 5/50 ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ The numerical value indicates (number of defective sheets / total number of sheets).

[0031]

The toner transfer image receptor of the present invention exhibits stable running properties in both high speed printing devices and low speed printing devices.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view showing a specific example of the image receptor of the present invention.

FIG. 2 is a schematic cross-sectional view showing a formed image of an image receptor after printing.

[Explanation of symbols]

 1 Image Receptor 2 Label Base Material 3 Toner Attachment Processing Layer 4 Antistatic Processing Layer 5 Separator Base Material 6 Release Layer 7 Matt Processing Layer 8 Antistatic Processing Layer 9 Adhesive Layer 10 Label Body 11 Separator 12 Formed Image

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification number Office reference number FI technical display location G09F 3/10 H 7028-5G

Claims (3)

[Claims] 1. An image receptor comprising a label and a separator detachably temporarily attached thereto, wherein the label has an antistatic treatment layer having a surface resistance of 10 ⁶ to 10 ¹³ Ω / □ and a toner attachment treatment layer. A label base made of a synthetic resin film having an adhesive layer on the back surface, the separator has a release layer on the surface, and an antistatic agent layer and a matte treatment layer on the back surface. Made of a synthetic resin film-made separator base material, and the density of the label base material is 0.6 to 1.2 g /
An image receptor characterized by being cm ³ . 2. The separator base material has a density of 0.6 to 1.2.
The image receptor according to claim 1, wherein the image receptor is g / cm ³ . 3. An image receptor comprising a label body and a separator detachably temporarily attached thereto, wherein the label body has an antistatic treatment layer having a surface resistance of 10 ⁶ to 10 ¹³ Ω / □ and a toner attachment treatment layer. A label base made of a synthetic resin film having an adhesive layer on the back surface, the separator has a release layer on the surface, and an antistatic agent layer and a matte treatment layer on the back surface. The separator base material is made of synthetic resin film, and the density of the separator base material is 0.6 to
An image receptor characterized by being 1.2 g / cm ³ .