JPH04191743A - Stripping development method for stripping development type image forming body - Google Patents

Abstract

PURPOSE:To eliminate stick-slip phenomena over the whole image part by allowing an adhesive stripping roller to adhere to one of supporting bodies to separate the image part. CONSTITUTION:A stripping development type image forming body is formed by sticking the layer 2 side of a supporting body 3 made of PET, etc. coated with a photopolymerization layer 2 to a supporting body 1 made of a phospher bronze plate, etc. In this case, a stripping end 5 without the layer 2 is provided. Next, an adhesive stripping member 6 of specified adhesive strength is sticked to over the entire width of a roller 4 the length of which exceeds the width of an image part to be formed, an thus an adhesive stripping roller is formed. After image exposure is performed to the image forming body, the image forming body is held by pinch rollers 10, and the roller 4 is rotated in close- contact with the stripping end 5 to separate the supporting body 3 and a non- exposed part 2a from the supporting body 1 to obtain an image through exposure parts 2b.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a peel-and-develop method for a peel-developable image forming body used for manufacturing printing plates, wiring circuits, and the like.

[Prior Art] There is a peeling development method as a means for forming an image using a resist film or a metal film on an image forming substrate such as a printed wiring board or a printing plate. Commercially available products using this developing method include "Neodolock" (manufactured by Nitto Denko), rK
Examples include DPJ (manufactured by Kimoto). For example, the above-mentioned "Neodorock" uses a light source with a wavelength corresponding to the photopolymerization initiator contained in the photopolymerization layer to expose the photopolymerization layer to a predetermined image, etc. between the exposed and unexposed areas. By creating a difference in adhesive strength between the second support and the first support, and utilizing this difference, after exposure, the second support is bonded to the second support together with the unexposed portion of the photopolymerizable layer. By peeling and removing the photopolymerizable layer from the first support, a resist image is formed on the first support by the exposed portion of the photopolymerizable layer.

In the above image forming method, one of the important factors that influences the quality and reliability of the image is the peeling step.

When the second support is peeled off from the first support together with the unexposed area of the photopolymerizable layer, the ratio of the exposed area to the unexposed area changes from moment to moment depending on the image as the peeling progresses, and along with this: The peeling force required for two-peel development also varies. This causes fluctuations in peeling speed and peeling angle, causing a so-called tearing phenomenon, which deteriorates the quality and reliability of images.

In addition, if the support is thin and has poor rigidity, the required peeling force may be uneven due to variations in the ratio of the exposed and unexposed areas in the direction perpendicular to the direction in which the image peels. Creases occur, and variations in peeling speed and peeling angle occur, making it impossible to perform uniform peeling development over the entire peeling width of the image area.

As a means to solve the above problems, Japanese Unexamined Patent Publication No. 62-318
As shown in Japanese Patent Application No. 50, etc. (using two peeling bars and a presser bar, the distance between the peeling bar and the presser bar is set to the sum of the thicknesses of the second support and the unexposed part of the photopolymerizable layer). In addition, it suppresses the chatter phenomenon, and furthermore,
As disclosed in Japanese Patent Publication No. 70560, the conveyance speed of the first support body is made slower than the take-up speed, or
As stated in Japanese Patent Application No. 60-61745: Detecting the peeling width and keeping the peeling force constant: It is possible to suppress the chattering phenomenon by rubbing or the like. It has been proposed to attach an adhesive tape to give the support an apparent rigidity and then peel it off.

[Problem to be solved by the invention] However, in the above conventional example, not only is the device complicated and requires a fine window, but it is also impossible to completely eliminate the chatter phenomenon. As the peeling progresses, the peeling site of the peel-developing image forming body shifts from the peeling bar or the peeling roller, and the peeling speed and peeling decrease due to the weak rigidity of the first and/or second supports. This caused angle fluctuations, significantly degrading the quality and reliability of the image.

[Means for Solving the Problems (and Effects)] The present invention: Well, in order to fundamentally solve the above problems; This is a peel development method that does not cause the so-called chatter phenomenon of the support, enables stable peel development, provides a good image over the entire image area, and simplifies the device configuration.

According to the present invention, the adhesive peeling roller having the adhesive part made of the adhesive peeling member is attached to the first roller of the peel developing type image forming body.
and/or the first or second support is brought into close contact with the second support side S, and the first or second support is peeled off at a peeling angle according to the curvature of the roller.
By sequentially adhering to the other support, winding it up, and peeling it off, it is possible to develop in a good condition without chatter, and to obtain an image corresponding to the exposed image on the first or second support. That is. That is, the present invention provides at least one photopolymerizable layer on a first support, and a second photopolymerizable layer on top of the photopolymerizable layer.
After image exposure is performed on the photopolymerizable layer using a peelable development type image forming body laminated with a support of An adhesive peeling roller having a width greater than the width is brought into close contact with at least one of the supports, and is moved relatively along the surface of the one support, so that at least one of the supports is wound up while adhering to the adhesive peeling roller. The film is peeled off and developed.

The adhesive release member used in the present invention has a peeling force that is sufficiently greater than the peeling force required when peeling and developing the peel-developing image forming body, and the support side has an image area that has been peel-developed.
Alternatively, any adhesive may be used as long as it has such adhesiveness that the side of the support having the non-image area can be easily peeled off using the adhesive peeling member. In addition, the shape f:i, a roller that winds up or conveys the support during peel development;
Any material that can bring the image area surface of the first support and/or second support of the peel development type image forming body into close contact over the entire surface of the image area may be used. Alternatively, a sheet-like adhesive peeling member having adhesive properties on both sides may be wound around a peeling roller or adhered to the first and/or second support side and transported. However, at this time, care must be taken to ensure that part of the roller and the part of the peel-developing image forming member that is peeled off adheres to each other and that the support does not shift.

In the present invention, a roller having adhesiveness on the i portion of the roller surface is hereinafter referred to as an adhesive peeling roller.

In the present invention, the adhesive part of the adhesive peeling roller used has a width greater than the width of the image area to be peeled and developed. In other words, by making the width of the adhesive part equal to or greater than the width of the image area, the peeled part of the first and/or second support, on which peeling force is applied during peeling development, is always maintained, regardless of the progress of peeling. By closely fixing with an adhesive peeling roller, it is possible to eliminate the wrinkling phenomenon from the entire image area.

When the adhesive peeling roller having this adhesive peeling member is used by adhering only to the support on one side of the peel-developing image forming body, the other support side facing with the photopolymerizable layer interposed therebetween, It is necessary to support the peel-and-develop type image forming body so that it is transported at a stable speed. for that purpose,
For example, the other support may be conveyed by pinch rollers, but the effects of the present invention can also be obtained by using this adhesive peeling member as a conveyance table for the peel-developing image forming body. For example, by bringing the adhesive peeling roller into close contact with the second support side and bringing the opposite first support side into close contact with the adhesive conveying table on which the adhesive peeling member is placed via the photopolymerized layer, The chatter phenomenon caused by the first support as well as the first support can be eliminated, and good images can be obtained. Furthermore, the adhesive peeling roller may be attached to both sides of the first and second supports of the peel-developing image forming body for peel-off development.

In addition, in peel development, the roller is moved, but the invention is not limited to this; it is sufficient to keep the roller fixed and move the forming body, that is, to make the roller and the forming body move relative to each other. In the invention, the image forming support on which the image is to be formed includes plastic film, paper, wood,
Metal plates, metal foils, glass plates, etc. are used. Therefore,
The support and photopolymerizable layer on the exposed side used in the present invention must be capable of forming an image on the above-mentioned image-forming support by peeling development. As such, the support on the exposure side is preferably made of polyethylene terephthalate (PET). The photopolymerizable layer contains an ethylenically unsaturated polymerizable compound, a film-forming polymer substance, and a photopolymerization initiator as essential components,
Furthermore, it is preferable that additives such as a thermal polymerization inhibitor, a coloring agent, a plasticizer, and a filler are included as necessary.

Furthermore, as disclosed in JP-A No. 60-238826, a metal compound and a metal surface treatment layer may be provided on the image forming support, and a photopolymerizable layer may be further laminated thereon. . The peel development type image forming body used in the present invention may be one that forms an image by peel development,
It is not particularly limited by the constituent materials and N configuration.

[Embodiment j] Hereinafter, an embodiment of the present invention will be described based on the accompanying drawings FIGS. 1 to 6.

<Example 1> As shown in FIG.
, on a 1 mm phosphor bronze plate (first support), with a thickness of 9
A photopolymerizable layer 2 is deposited on PET (second support 3) with a thickness of 4 μm.
The photopolymerizable layer side of the film coated on part m was adhered to create the film. The photopolymerizable layer 2 is made by coating the PET surface with a solution according to the following formulation using an applicator, and heating it in an oven at 80 degrees for 10 minutes.
The film was dried by heating for several minutes to give a dry film thickness of 4 μm. (Parts refer to parts by weight) Photopolymerizable polymer precursor 70Nix M6300
5.0 parts (manufactured by Toagosei Kagaku) Film forming agent Super Chron CR-55.0 parts (manufactured by Yamaba Kokusaku Valve) Photopolymerization initiator KAYACIIRE DETX
O, 75 part KAYACtlRE EPA
O, 75 parts (manufactured by Nippon Kayaku) Solvent: Methyl ethyl ketone 10.0 parts Toluene 10.0 parts At this time, in order to start the peeling process smoothly, the peeling edge 5 is placed at the tip of the peel-developing image forming body. In addition, only the second support 3 was provided in a laminated manner on the first support 1 without the photopolymerizable layer 2. The tip is the tip in the direction of progress of peeling, and is the part that first comes into contact with the adhesive peeling member in the peeling process and is adhered.

The peel force applied during peel development of the prepared peel development type image forming body is a maximum of 250 g / 25 mm width (180'' peel fi test), so an adhesive release member with sufficient adhesiveness to peel and develop this. As, T with adhesive force of 270gf
-G sheet (manufactured by Kakashi Shoko), as shown in FIG.
An adhesive peeling member 6 was adhered over the entire width of the roller to form an adhesive peeling roller 4.

After performing image exposure on the peelable developing type image forming body using a squirrel mask with a high pressure mercury lamp, as shown in FIG. Then, the second support side of the peel end 5 of the peel development type image forming body is brought into close contact with the second support side, and the adhesive peel roller 4 is rotated to remove the second support body 3 and the unexposed portion 2a of the photopolymerizable layer 2. The photopolymerizable layer 2 was peeled off from the first support 1 to obtain an image of the exposed portion 2b of the photopolymerizable layer 2 on the second support 1.

Note that 11 is a conveyance roller that conveys the peeled support. Further, the state of peeling and development using the adhesive peeling roller 4 is shown in FIG. In the peeling process, no chattering phenomenon occurred over the entire image area, and a good image was obtained.

<Example 2> The above-mentioned peel-and-developable image forming body prepared in the same manner as in Example 1 was subjected to image exposure using a high-pressure mercury lamp using a squirrel mask, and as shown in FIG. Second
Similarly to the support 3 side, the first support 1 side is also provided with an adhesive peeling roller 4', so that both surfaces of the second support 3 and the first support 4 are provided with an adhesive peeling roller 4'. and 4', and rotate the adhesive peeling roller 4 to peel off the unexposed part 2a of the second support 3 and the photopolymerized N2 from the exposed part 2b of the first support 1 and the photopolymerized N2. Thus, an image was obtained on the first support 1 by the exposed portion 2b of the photopolymerizable layer 2.

In the peeling process, no chattering phenomenon occurred over the entire image area, and a good image was obtained.

<Comparative Example 1> The above-mentioned peel-and-developable image forming body prepared in the same manner as in Example 1 was image-exposed with a high-pressure mercury lamp using a squirrel mask, and as shown in FIG. An adhesive release member 6' having a width narrower than the width of the image area 8 of the formed body was attached, and peeling and development was performed in the same manner as in Example 1. As a result, a good image was obtained in the area where the adhesive part was peeled off while sticking, but there was no chattering phenomenon and a good image was obtained.However, in the image in the area where the adhesive part was not adhered, the image was distorted due to the chattering phenomenon. occured.

〔Effect of the invention〕

As explained above, in peel development of a peel development type image forming body, by attaching an adhesive peel member to the first and/or second support and peeling it off, the occurrence of chatter phenomenon can be prevented during the peeling process. It was possible to obtain a good image over the entire image area, and to simplify the device configuration.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing one embodiment of the present invention, FIG. FIG. 4 is a schematic diagram illustrating the shape of an adhesive peeling roller used in the present invention, and FIG. 5 is a schematic diagram illustrating the shape of an adhesive peeling roller used in a comparative example of the present invention. FIG. 6 is an explanatory diagram showing the state of peeling of the support by the adhesive peeling roller. DESCRIPTION OF SYMBOLS 1... First support, 2... Photopolymerizable layer, 2a... Unexposed area of photopolymerizable layer, 2b... Exposed area of photopolymerizable layer, 3... Second support , 4...Adhesive peeling roller, 4'...Other adhesive peeling roller, 5...Peeling end, 6...Adhesive peeling member, 6'...Other adhesive peeling member, 7...Roller, 8...Image portion to be formed, 9...Peel development type image forming body, 10...Pinch roller-6 Patent applicant Canon Co., Ltd.

Claims (1)

[Claims] At least one photopolymerizable layer is provided on a first support, and a second support is laminated thereon.The photopolymerizable layer is subjected to image exposure using a peelable development type image forming body, and then the surface becomes sticky. an adhesive peeling roller having a width greater than or equal to the width of the image area formed on the formed body is brought into close contact with at least one of the supports, and is moved relatively along the surface of the one support to at least A peel development method for a peel development type image forming body, characterized in that one support is rolled up on an adhesive peel roller to peel and develop.