JP2008116514A - Continuous exposure apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a continuous exposure apparatus capable of accurately carrying out imagewise exposure and stably carrying out exposure for a long period of time. <P>SOLUTION: The continuous exposure apparatus comprises at least a script cylindrical body 1 having an image pattern drawn on a transparent cylindrical substrate, a light source 2 placed inside the script cylindrical body, and a light shielding member 3 regulating the light emitting from the light source. The script cylindrical body used has a transparent antistatic layer 70 around the script cylindrical body to prevent intrusion of dust or foreign matter between the outer circumference face of the script cylindrical body and a printing precursor and preventing wear of the outer circumference face. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a continuous exposure apparatus for forming an image pattern on a substrate. More specifically, the present invention relates to a continuous exposure apparatus for a transparent conductive film having a conductive pattern (for example, a lattice pattern) formed on a transparent substrate and usable for production of an electromagnetic shielding film, a touch panel, or the like. .

  In recent years, with the rapid development of the information-oriented society, technologies related to information-related devices have rapidly advanced and become popular. Among them, the display device is used for televisions, personal computers, guidance displays for stations, airports, and other information. In particular, plasma displays have attracted attention in recent years.

  In such an information society, there is a concern about the influence of electromagnetic waves radiated from these display devices. For example, the influence on surrounding electronic devices and the influence on the human body are considered. In particular, the effects on human health cannot be ignored, and there is a need to reduce the intensity of the electromagnetic field applied to the human body. In response to such demands, various transparent conductive films (electromagnetic waves) Shield film) has been developed. For example, JP-A-9-53030, JP-A-11-122024, JP-A-2000-294980, JP-A-2000-357414, JP-A-2000-329934, JP-A-2001-38843, JP-A-2001-47549, 2001-2001. No. 51610, No. 2001-57110, No. 2001-60416, and the like.

  As a method for producing these transparent conductive films, conductive metals such as silver, copper, nickel, and indium are formed on a transparent resin film by sputtering, ion plating, ion beam assist, vacuum deposition, and wet coating. In general, a method of forming a metal thin film is commonly used. In recent years, a demand for a transparent conductive film is expanding, and a manufacturing method with low cost and high productivity is demanded.

  In view of the above circumstances, a method (silver complex diffusion transfer method) in which metallic silver is deposited on a physical development nucleus layer by development processing to form a conductive pattern (silver complex diffusion transfer method) is disclosed in Japanese Patent Publication Nos. 42-23745 and 2003-77350. It is disclosed in the publication. Further, WO 2004/007810 discloses that metal plating is performed using a conductive pattern made of metallic silver as a catalyst. In these methods, an original material (precursor) used to form a conductive pattern is prepared in the form of a roll, which is exposed to light and developed, and then wound into a roll. (Roll-to-roll) can be continuously processed to improve productivity.

  As a continuous exposure apparatus that performs an exposure process without stopping the conveyance of the roll-shaped precursor, the document cylindrical body on which the mask pattern is drawn on the outer peripheral surface of the transparent cylindrical base material is synchronized with the conveyance speed of the precursor, An apparatus for performing exposure from the inside of an original cylinder is disclosed in Japanese Patent Laid-Open Nos. 2-293754, 2000-35677, 2000-75497 (Patent Documents 1 to 3) and the like.

  In these exposure apparatuses, if there is foreign matter such as dust or dust on the outer peripheral surface of the original cylindrical body, the precursor is exposed like an image of the foreign matter, and there is a problem that the desired mask pattern is not exposed. In order to solve the problem, in JP 2000-35677 A and JP 2000-75497 A, an adhesive cleaning roller is brought into contact with the original cylindrical body to remove dust and dirt.

  However, in these exposure apparatuses, the precursor is conveyed while being brought into contact with the original cylindrical body. Therefore, the original cylindrical body is charged by contact charging between the original cylindrical body and the precursor, and foreign matters such as dust and dust are exposed to the original cylindrical body. There is a problem in that dust and dirt cannot be sufficiently removed by the cleaning roller alone. If dust or dust cannot be removed sufficiently, for example, if the wiring pattern is an electronic circuit, it may cause a short circuit or disconnection, causing the electronic circuit to malfunction. This is a major problem that leads to the deterioration of the shield characteristics.

In addition, when the precursor is repeatedly contacted with the original cylinder, the outer peripheral surface of the original cylinder gradually wears, resulting in a decrease in transparency (an increase in haze) and abrasion of the drawn mask pattern. In this case, a desired mask pattern cannot be obtained. For this reason, it is necessary to periodically replace the original cylindrical body, which is inefficient, and the frequency affects the production cost. For this reason, extending the life of the original cylindrical body is also an issue.
JP-A-2-293754 JP 2000-35677 A JP 2000-75497 A

  Accordingly, a first object of the present invention is to provide a continuous exposure apparatus that performs exposure processing accurately in an image-like manner, and more specifically, a document cylindrical body in which an image pattern is drawn on a transparent cylindrical substrate. An object of the present invention is to provide a continuous exposure apparatus in which no dust or foreign matter is mixed between the outer peripheral surface and the precursor. A second object of the present invention is to provide a continuous exposure apparatus capable of performing exposure processing stably for a long period of time, and more specifically, a continuous exposure apparatus using a document cylindrical body whose outer peripheral surface is less likely to wear. Is to provide.

The above object of the invention has been basically achieved by the following invention.
1) Continuous exposure having at least a document cylindrical body on which an image pattern is drawn on the outer peripheral surface of a transparent cylindrical base material, a light source disposed inside the document cylindrical body, and a light blocking member for regulating light emitted from the light source A continuous exposure apparatus having an antistatic layer on the outer peripheral surface of the original cylindrical body.
2) The antistatic layer selected from any one of a layer in which a polythiophene conductive polymer is laminated on a transparent cross-linked cured resin and a layer containing metal fine particles and a transparent cross-linked cured resin as the antistatic layer described in 1) above Continuous exposure equipment using

  According to the present invention, it is possible to provide a continuous exposure apparatus in which foreign matter such as dust is not mixed between the outer peripheral surface of the original cylinder and the precursor, and the surface of the original cylinder is less likely to be worn.

  The continuous exposure apparatus of the present invention has a roll-out portion of the precursor and a continuous exposure that conveys the precursor for the purpose of processing in roll-to-roll. It has an exposure part and a winding part for winding the precursor into a roll. Here, the treatment by roll-to-roll is a system in which the precursor F wound in a roll shape is continuously unwound, exposed, and then wound again in a roll shape.

  The continuous exposure apparatus of the present invention can be directly connected to the development processing apparatus by synchronizing the transport speed with an apparatus for developing the precursor (hereinafter referred to as a development processing apparatus). When connected to the development processing apparatus, the precursor is exposed in a continuous exposure unit, developed in a development processing unit, removed unnecessary components, dried, and then wound up in a roll shape in a winding unit.

  The precursor targeted by the apparatus of the present invention is a precursor capable of obtaining a conductive pattern through the steps of exposure, development, and removal of unnecessary components, for example, a metal thin film layer on a substrate. And a precursor having at least a physical development nucleus layer and a silver halide emulsion layer in this order on the substrate. In particular, a precursor having at least a physical development nucleus layer and a silver halide emulsion layer in this order on a substrate is preferable because of its excellent image quality.

  The continuous exposure apparatus of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a schematic sectional side view showing a continuous exposure unit of the continuous exposure apparatus of the present invention. FIG. 2 is a schematic sectional side view of an embodiment of the continuous exposure apparatus of the present invention.

  As shown in FIG. 2, the unwinding part A includes an unwinding shaft 11 and tension control means 13, and a roll-shaped precursor 12 is attached to the unwinding shaft 11. And the roll-shaped precursor 12 is conveyed in the direction of the arrow. The roll-shaped precursor 12 is internally wound (winded with the photosensitive layer side face inside). A tension control means 13 (for example, a powder brake) is connected to the unwinding shaft 11, and the tension applied to the precursor F is controlled. The tension control means 13 applies a certain tension to the precursor F in order to suppress the meandering of the precursor F, and the range of 40 N / m to 150 N / m is appropriate. The roll-shaped precursor 12 is provided with a lead film having a length corresponding to the entire length of the conveying path of the pattern forming apparatus at the uppermost winding and the lowermost winding, and the product portion of the precursor F is always conveyed. It is transported in a state where the speed and tension are controlled.

  The precursor F delivered from the roll-shaped precursor 12 is brought into contact with the adhesive roller 15 so that the dust adhering to both the front and back surfaces is removed by adhesion, and then sent to the continuous exposure unit. And the dust adhering to the adhesive roller 15 is periodically removed by a cleaning means (not shown) (for example, an adhesive roller whose surface can be peeled once every round) to prevent the dust from adhering to the precursor F again. . Other methods may be used as long as dust attached to the precursor F can be removed. For example, dust may be sucked and removed by a suction nozzle.

  The continuous exposure unit E of the apparatus of the present invention comprises a document cylinder 1, an exposure source 2, a light shielding member 3, a contact roller 23, transport rollers 9a and 9b, a cleaning roller 16, and a contact roller 23 shown in FIG. ing. As shown in FIG. 1, the original cylinder 1 has a structure in which a mask pattern M is formed on the outer peripheral surface of the transparent cylindrical substrate 4. There are various methods for forming the mask pattern M on the transparent cylindrical base material 4. For example, carbon black is applied to the outer peripheral surface of the transparent cylindrical base material 4 and unnecessary portions are removed by a laser ablation device to form the mask pattern M. Is generally used. Further, an antistatic layer 70 which is a feature of the present invention is formed on the outer peripheral surface of the original cylinder 1. As a method for forming the antistatic layer 70, for example, application methods such as dip coating, slide coating, curtain coating, bar coating, air knife coating, roll coating, gravure coating, and spray coating are preferably used.

  As shown in FIG. 1, an exposure source 2 and a light shielding member 3 are disposed inside the original cylindrical body 1. The exposure source 2 irradiates light from the inside of the original cylinder 1 in the radial direction of the original cylinder 1 with a linear light source arranged in the axial direction of the original cylinder 1. As the exposure source 2, for example, a high-pressure mercury lamp, an electrodeless power source, a white light-emitting diode, and the like, which are linearly arranged in the axial direction of the precursor, are used. Although not shown, when the light emitted from the exposure source 2 includes light having a wavelength that is not necessary for exposure, an optical that cuts light having a wavelength that is not necessary for exposure between the exposure source 2 and the original cylinder 1. A filter may be used. The exposure source 2 is connected to an exposure amount adjusting unit (not shown) (for example, a dimming unit using an inverter circuit when a fluorescent lamp is used as the exposure source), so that the exposure amount can be increased or decreased.

  The light shielding member 3 covers the exposure source 2 in order to limit the irradiation light from the exposure source 2 to only a part of the side surface of the original cylindrical body 1. The inside of the light shielding member 3 is a reflecting plate in order to efficiently use the light from the exposure source 2. Accordingly, the light shielding member 3 is preferably made of a glossy iron plate, aluminum plate or the like with a matte black coating on its outer surface. However, the light shielding property, reflectivity, and heat resistance that can withstand the heating of the exposure source 2 by irradiation light. If it has, you may use another member. A movable plate 22 is attached to the light shielding member 3 via a hinge 21, and the side surface of the original cylindrical body 1 irradiated with light by rotating the movable plate 22 about the hinge 21 as a rotation center (FIG. 1). , The exposure amount can be adjusted by increasing / decreasing the area of the area designated as the exposure region).

  The original cylinder 1 is rotatably disposed on the transport rollers 9a and 9b. A contact roller 23 is disposed on the outer periphery of the original cylinder 1. The precursor F is wound around the outer periphery of the original cylindrical body 1 through the lower side of the transport roller 9a, and is transported to the winding unit through the lower side of the transport roller 9b. Then, the original cylinder 1 is pressed against the conveying rollers 9a and 9b by the tension applied to the precursor F, and the original cylinder 1 is rotated in accordance with the movement of the precursor F, and is irradiated with light. On one side, the precursor F is continuously exposed as an image of the mask pattern M. The contact roller 23 is a roller for bringing the precursor F into close contact with the original cylinder 1, and the precursor F is conveyed by holding the precursor F between the original cylinder 1 and the contact roller 23. The adhesion between F and the original cylinder 1 is improved. In order to improve the adhesion between the precursor F and the original cylinder 1, it is preferable to provide a plurality of adhesion rollers 23. The transparent cylindrical base material 4 that is the base material of the original cylindrical body 1 is only required to transmit light having a desired wavelength. For example, acrylic resin, glass, or the like is used. The transport rollers 9a and 9b and the contact roller 23 may have any surface quality that does not cause the precursor F to slip or damage the precursor F. For example, a roller made of nitrile rubber (NBR) is preferably used. .

  As described above, the antistatic layer 70, which is a feature of the present invention, is formed on the outer peripheral surface of the original cylindrical body 1. When the non-conductor original cylinder 1 and the precursor F are in contact with each other, the surface of the original cylinder 1 is charged by contact charging and electrostatically adsorbs dust, dust, etc. By forming a conductive antistatic layer 70 on the surface, contact charging does not occur, and electrostatic adsorption of dust and dirt can be prevented. As a result, dust and dust images are not exposed, and fine line patterns of about several tens of micrometers that are used for mask patterns for electromagnetic wave shielding films such as plasma displays can be accurately exposed imagewise. Therefore, the fine line pattern formed by developing after exposure is not broken across the entire surface of the electromagnetic wave shielding film, and an electromagnetic wave shielding film having high electromagnetic wave shielding characteristics can be obtained.

The surface specific resistance of the antistatic layer 70 according to JIS-K-6911 is 1 × 10 ¹² Ω / □ or less, preferably 1 × 10 ¹⁰ Ω / □ or less. If it is 1 × 10 ¹² Ω / □ or less, dust and dust adhesion preventing effect can be obtained, and if it is 1 × 10 ¹⁰ Ω / □ or less, contact antistatic effect between the precursor F and the original cylinder 1 can be obtained. This is preferable because it prevents dust and dust from adhering during continuous exposure.

  Since the outer peripheral surface of the original cylindrical body 1 is repeatedly in contact with the precursor F by the exposure process, it gradually wears, resulting in a decrease in transparency and abrasion of the mask pattern, and finally a desired mask pattern is formed. It can no longer be obtained. In order to prevent this, the antistatic layer 70 is required to have transparency and scratch resistance in addition to the antistatic properties described above. As such an antistatic layer, for example, a layer in which a conductive polymer is laminated on a transparent crosslinked cured resin, a layer containing metal fine particles and a transparent crosslinked cured resin, and the like are useful.

  Regarding the transparency of the antistatic layer 70, the haze according to JIS-K7105 is preferably 2% or less, and the total light transmittance according to JIS-K7105 is preferably 90% or more.

  Examples of the conductive polymer used in the layer in which the conductive polymer is laminated on the transparent cross-linked cured resin include polyacetylene, polyaniline, polythiophene, polypyrrole, polyphenylene sulfide, poly (1,6-heptadiyne), polybiphenylene (poly Paraphenylene), polyparaphenylene sulfide, polyphenylacetylene, or derivatives thereof. Preferably, a polythiophene conductive organic polymer is useful. The thickness of the conductive polymer layer is larger than 0 and not more than about 5 μm, preferably about 0.01 to 1 μm.

  Further, as the transparent crosslinkable resin, a layer obtained by curing a resin composition that is crosslinked and cured by a chemical reaction at room temperature, heat, ionizing radiation, or the like can be applied. Preferably, the resin is an ionizing radiation curable resin and has excellent transparency. In view of this, it is more preferable to use an acrylic resin. As the acrylic resin, urethane acrylate resin, polyester acrylate resin, epoxy acrylate resin, or the like can be used. The thickness of the transparent cross-linked cured resin is suitably about 1 to 20 μm.

  Tin oxide, zinc oxide, titanium oxide, indium oxide, etc. doped with antimony, aluminum, etc. are useful as metal fine particles used in the layer containing metal fine particles and transparent cross-linked cured resin, but a relatively small amount is added Antimony-doped tin oxide or zinc oxide should be used because it provides good antistatic properties and the transparency of the layer obtained by applying a paint kneaded with ionizing radiation curable resin is good. Is preferred. The average primary particle diameter of the metal oxide fine particles is preferably in the range of 5 to 200 nm, more preferably in the range of 10 to 100 nm.

  As the transparent crosslinkable resin, it is preferable to use an acrylic resin in the same manner as the transparent crosslinkable resin used for the layer in which the conductive polymer is laminated on the transparent crosslinkable resin.

  As shown in FIG. 1, a cleaning roller 16 is disposed in contact with a portion of the outer periphery of the original cylindrical body 1 where the precursor F is not wound, and dust attached to the original cylindrical body 1 and the mask pattern M is removed. It has been removed. And the cleaning mechanism similar to the thing used for the above-mentioned adhesive roller 15 is attached.

  As shown in FIG. 2, a nip roller pair 18a is disposed on the upstream side of the conveying roller 9a, and a nip roller pair 18b is disposed on the downstream side of the conveying roller 9b. The precursor F is formed by the nip roller pair 18a and the nip roller pair 18b. By being pinched, the precursor F is prevented from meandering while being displaced in the roll width direction of the nip roller pair 18a and the nip roller pair 18b. A drive motor 19 is connected to one roller of the nip roller pair 18b, and the precursor F is conveyed by driving the drive motor 19.

  The continuous exposure apparatus of the present invention is preferably covered with a dust-free box (clean box) 17. The dust-free box 17 is provided with a blower (not shown) and a HEPA (High Efficiency Particulate Air) filter, and clean air is fed into the dust-free box 17 so that the inside of the dust-free box 17 is kept at a positive pressure, and dust is not collected from the outside. Prevents contamination. In addition, air curtains (not shown) for taking in and out the roll-shaped precursor 12 and the take-up roll 62 are provided on both side surfaces of the dust-free box 17.

  The exposed precursor F is wound up in a roll shape by a winding shaft 61. A tension control means 63 (for example, a torque motor) capable of driving and rotating the shaft is attached to the winding shaft 61. The tension control means 63 applies a high tension to the precursor F in order to suppress meandering of the precursor F, and a range of 40 N / m to 150 N / m is appropriate. Reference numeral 62 is a substrate in which a conductive pattern is formed and wound into a roll.

  Examples of the precursor F suitably used in the apparatus of the present invention include, for example, the silver halide photosensitive materials described in the above-mentioned Japanese Patent Publication No. 42-23745, JP-A 2003-77350, WO 2004/007810, etc. And precursors having a metal thin film layer and a photocrosslinking cured resin layer in this order on a substrate described in JP-A-5-29395, JP-A-9-172041, and the like. .

EXAMPLES Hereinafter, although an Example and a comparative example demonstrate this invention further in detail, it is not limited to this.

(Example 1)
A polyethylene terephthalate film having a thickness of 175 μm was used as a substrate, and an undercoat layer made of vinylidene chloride was applied to the film, and a base layer having a gelatin content of 50 mg / m ² was coated thereon and dried. Next, a physical development nucleus layer made of palladium sulfide prepared as described below was applied and dried.

<Preparation of palladium sulfide sol>
Liquid A Palladium chloride 5g
Hydrochloric acid 40ml
1000ml distilled water
B liquid sodium sulfide 8.6g
1000ml distilled water
Liquid A and liquid B were mixed with stirring, and 30 minutes later, the solution was passed through a column filled with an ion exchange resin to obtain palladium sulfide sol.

<Preparation of physical development nucleus layer coating solution>
50 ml of palladium sulfide sol
20% 1% gelatin solution
Surfactant 0.2g
Glutaraldehyde 300mg
Antihalation dye (following formula 1) 5g
Add water to make a total volume of 2000 ml.
This physical development nucleus layer coating solution was applied on the base layer so that palladium sulfide was 0.4 mg / m ² in solid content, and dried.

Subsequently, a silver halide emulsion layer was coated on the physical development nucleus layer. The silver halide emulsion was prepared by a general double jet mixing method for photographic silver halide emulsions. This silver halide emulsion was prepared such that 90 mol% of silver chloride and 10 mol% of silver bromide had an average particle size of 0.2 μm. The silver (silver nitrate) / gelatin mass ratio of the silver halide emulsion layer is 2.5. In the silver halide emulsion layer, the surfactant is 0.2 g / m ² , and the dye of the above-mentioned formula 1 and the dyes of the following formulas 2 and 3 are each 50 mg / m ² to enable handling under a yellow fluorescent lamp. Contains m ² . This silver halide emulsion layer was applied so that the amount of silver halide (converted to silver nitrate) was 4 g / m ² and dried to prepare a roll precursor having a width of 700 mm and a winding of 300 m.

  EXF-01J (a photopolymerization initiator-containing acrylic resin liquid for forming a transparent cross-linked cured resin layer on the outer peripheral surface of the original cylinder on which a mesh pattern (mesh interval of 300 μm and mesh line width of 25 μm) is drawn is formed. Using Daiichi Seika Kogyo Co., Ltd.) so that the thickness after curing is 10.0 μm, using 120 W / cm high-pressure mercury lamp (made by Ushio Electric Co., Ltd.) and a running speed of 20 m / min. Then, UV irradiation was performed to incompletely cross-link to form a transparent cross-linked cured resin layer. Next, PPY-12 (manufactured by Maruhishi Oil Chemical Co., Ltd.) is used as the polypyrrole-based conductive organic polymer on the transparent crosslinked cured resin layer so that the thickness after drying becomes 0.5 μm. And dried to form a conductive polymer layer. Finally, a high-pressure mercury lamp (USHIO INC.) 120 W / cm is used on the outer peripheral surface of the original cylinder on which the above-mentioned transparent cross-linked cured resin layer and conductive polymer layer are formed, and a running speed of 20 m is used. The transparent crosslinked cured resin layer described above was completely crosslinked and cured by irradiating ultraviolet rays at / min to obtain a document cylinder M1.

  The original cylindrical body M1 is attached to the continuous exposure apparatus of the present invention shown in FIG. 2, and 50 roll precursors (700 mm width, 300 m winding) are exposed by the continuous exposure apparatus of the present invention. Immerse in alkaline solution (silver complex diffusion transfer developer) at 15 ° C for 60 seconds, and then wash and remove the silver halide emulsion layer to form a silver thin film with a lattice pattern with a fine line width of 25 µm and a lattice spacing of 300 µm. It was.

<Alkaline solution>
Sodium hydroxide 20g
Hydroquinone 20g
1-phenyl-3-pyrazolidone 2g
Sodium sulfite 30g
N-methylethanolamine 10g
Adjust the total volume to 1000 ml with water. Adjust to pH 13. Thereafter, development, removal of unnecessary components, and drying were performed to obtain a transparent conductive film.

(Example 2)
EXF-01J (a photopolymerization initiator-containing acrylic resin liquid for forming a transparent cross-linked cured resin layer on the outer peripheral surface of the original cylinder on which a mesh pattern (mesh interval of 300 μm and mesh line width of 25 μm) is drawn is formed. Dainichi Seika Kogyo Co., Ltd.) was applied to a thickness of 10.0 μm, and a high-pressure mercury lamp (Ushio Electric Co., Ltd.) 120 W / cm was used as a curing device, and a running speed of 20 m / min. Then, UV irradiation was performed to incompletely cross-link to form a transparent cross-linked cured resin layer. Next, Denatron (manufactured by Nagase ChemteX Corp.) is applied as a polythiophene conductive organic polymer on the transparent crosslinked cured resin layer described above so that the thickness after drying is 0.5 μm and dried. Thus, a conductive polymer layer was formed. Finally, a high-pressure mercury lamp (USHIO INC.) 120 W / cm is used on the outer peripheral surface of the original cylinder on which the above-mentioned transparent cross-linked cured resin layer and conductive polymer layer are formed, and a running speed of 20 m is used. The above-mentioned transparent cross-linked cured resin layer was completely cross-linked and cured by irradiating ultraviolet rays at / min to obtain a document cylinder M2. The original cylindrical body M2 was attached to the continuous exposure apparatus of the present invention shown in FIG. 2, and the same processing as in Example 1 was performed using the same precursor as in Example 1.

(Example 3)
EXF-01J (manufactured by Dainichi Seika Kogyo Co., Ltd.) is used as a photopolymerization initiator-containing acrylic resin liquid for forming a transparent cross-linked cured resin layer, and Pazet AB (Huxitec Co., Ltd.) is used as zinc oxide metal fine particles doped with aluminum. Manufactured by using EXF-01J and adding 40% by mass of Pazet AB, and a mesh pattern (lattice pattern with a mesh interval of 300 μm and a mesh line width of 25 μm) is drawn using EXF-01J. The above-mentioned resin liquid is applied to the outer peripheral surface of the cylindrical body so as to be 10.0 μm after curing, and ultraviolet rays are used at a traveling speed of 20 m / min using two 120 W / cm high-pressure mercury lamps (manufactured by Ushio Electric Co., Ltd.). To obtain a document cylinder M3 having a transparent crosslinked cured resin layer in which metal fine particles are kneaded formed on the outer peripheral surface. The original cylindrical body M3 was attached to the continuous exposure apparatus of the present invention shown in FIG. 2, and the same processing as in Example 1 was performed using the same precursor as in Example 1.

Example 4
EXF-01J (manufactured by Dainichi Seika Kogyo Co., Ltd.) is used as a photopolymerization initiator-containing acrylic resin liquid for forming a transparent crosslinked cured resin layer, and T-1 (Co., Ltd.) is used as tin oxide metal fine particles doped with antimony. A resin solution in which 30% by mass of T-1 was added to EXF-01J was prepared using a Gemco product (average primary particle size of 20 nm), and a mesh pattern (lattice pattern having a mesh interval of 300 μm and a mesh line width of 25 μm) was drawn. The above-mentioned resin liquid is applied to the outer peripheral surface of the cylindrical body M so as to have a thickness of 10.0 μm, and a high-pressure mercury lamp (made by Ushio Electric Co., Ltd.) 120 W / cm is used, and a traveling speed is 20 m / min. Were subjected to UV irradiation to completely crosslink to obtain an original cylinder M4 having a transparent cross-linked cured resin layer kneaded with metal fine particles formed on the outer peripheral surface. The original cylindrical body M4 was attached to the continuous exposure apparatus of the present invention shown in FIG. 2, and the same processing as in Example 1 was performed using the same precursor as in Example 1.

(Comparative Example 1)
The original cylindrical body M5 on which a mesh pattern (mesh pattern having a mesh interval of 300 μm and a mesh line width of 25 μm) is attached is attached to the continuous exposure apparatus of the present invention shown in FIG. 2, and the same precursor as in Example 1 is used. The same treatment as in Example 1 was performed.

(Comparative Example 2)
As a photopolymerization initiator-containing acrylic resin liquid for forming a transparent cross-linked cured resin layer on the outer peripheral surface of the original cylindrical body M on which a mesh pattern (mesh interval of 300 μm mesh and mesh line width of 25 μm) is drawn, EX F -01J (manufactured by Dainichi Seika Kogyo Co., Ltd.) was applied so that the thickness after curing was 10.0 μm, and two high-pressure mercury lamps (made by Ushio Electric Co., Ltd.) 120 W / cm were used, The original cylindrical body M6 was obtained by irradiating with ultraviolet rays at a traveling speed of 20 m / min for complete crosslinking. The original cylindrical body M6 was attached to the continuous exposure apparatus of the present invention shown in FIG. 2, and the same processing as in Example 1 was performed using the same precursor as in Example 1.

Evaluation was performed as follows.
For the original cylinders M1 to M6, the line width of the original after exposure processing of 50 roll-shaped precursors was taken with a digital microscope (KH-3000, manufactured by Hilox Co., Ltd.), and the width of the fine line was reduced. The obtained images were scratched and evaluated. Moreover, about the electroconductive pattern film produced in Examples 1-4 and Comparative Examples 1 and 2, the foreign substance with a diameter of 100 micrometers or more was detected with a film defect detection apparatus (Takenaka System Equipment Co., Ltd. product, TP-9854C). A roll in which 10 or more of the aforementioned foreign matters were mixed in one roll was counted as a foreign matter mixed roll.

  And about the electroconductive pattern film produced in Examples 1-4, the line width of the electroconductive pattern film obtained at the time of a process start and the completion | finish is a digital microscope (product made from a Hilox Co., Ltd., KH-3000). The width of the thin line was obtained. The results are shown in Table 1.

  As shown in Table 1, all the mesh patterns of the original cylinder M5 as a comparative example were worn away. In addition, the original cylinder M6 in which only the transparent cross-linking cured resin layer is formed on the outer peripheral surface of the original cylinder has a large amount of foreign matters, and the conductive pattern film obtained in Comparative Example 2 has a large amount of foreign matters. It was. Further, the surface of the original cylindrical body M6 after the 50 processing was scratched due to the mixing of foreign matter, and the light irradiated to the precursor was scattered, so that the fine line of the conductive pattern film became thin.

  On the other hand, the conductive pattern films obtained in Examples 1 to 4 using the continuous exposure apparatus of the present invention are less contaminated with foreign matter and less scratched on the surface of the original cylinder due to foreign matter. A conductive pattern film with less reduction in line width from the start compared to the example was obtained.

  The conductive pattern obtained by developing the roll-shaped precursor exposed by the continuous exposure apparatus of the present invention can be used for a transparent conductive film used for applications such as an electromagnetic shielding film and a touch panel.

Schematic side sectional view showing a continuous exposure part of the processing apparatus of the present invention Schematic side sectional view showing an example of the processing apparatus of the present invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Original cylinder 2 Exposure source 3 Light-shielding member 4 Transparent cylindrical base material 12 Roll-shaped precursor 19 Drive motor 62 Winding roll 70 Antistatic layer F Precursor M Mask pattern

Claims (2)

  A continuous exposure apparatus having at least a document cylindrical body in which an image pattern is drawn on the outer peripheral surface of a transparent cylindrical base material, a light source disposed inside the document cylindrical body, and a light shielding member for regulating light emitted from the light source. A continuous exposure apparatus having an antistatic layer on the outer peripheral surface of the original cylindrical body.   The antistatic layer selected from any one of a layer in which a polythiophene conductive polymer is laminated on a transparent cross-linked cured resin and a layer containing metal fine particles and a transparent cross-linked cured resin is used as the antistatic layer. 2. The continuous exposure apparatus according to 1.

Images