JP2001150628A - Printing original plate, apparatus and method of manufacturing the same, and image forming apparatus using screen printing original plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technique for forming a screen printing original plate by applying an ink jet recording system of an intermediate transfer system using a powder being a water absorbable material to dispense with an expensive screen printing plate material to which a thermoplastic film is bonded. SOLUTION: A seal part of a printing material such as ink using a material which can be dissolved or swollen by a liquid 31 to raise the viscosity of the liquid is formed on a printing original plate material 41.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a printing apparatus,
In particular, the present invention relates to a stencil printing plate prepared by applying a liquid ejecting apparatus such as an intermediate transfer type ink jet recording method, and a manufacturing apparatus and method thereof, and further relates to an image forming apparatus and a method using the stencil printing plate. Things.

[0002]

2. Description of the Related Art Conventionally, as a material for preparing a stencil printing plate used for a printing apparatus, especially a stencil printing, a very thin thermoplastic resin film of polyester or the like is coated with a porous flexible material such as Japanese paper. What bonded a sheet is known. Further, in making such a stencil printing master, perforated plate making is performed on the thermoplastic resin film side using a heating element such as a thermal head, and the master is automatically conveyed, and A method in which a flexible sheet is automatically wound around the outer peripheral surface of a printing drum so that the printing sheet is continuously pressed against the stencil printing plate by a pressing member such as a press roller to perform printing. Is also well known. Since the thickness of the thermoplastic resin film used for making the original plate is very thin, for example, about 2 μm, the film alone cannot be automatically conveyed or made in the apparatus. Even if it can be wound around the outer peripheral surface, wrinkles are generated, and it becomes impossible to execute printing. For this reason, an ink-permeable porous flexible sheet such as Japanese paper is attached to the above-described thermoplastic resin film, and a stencil printing plate having a thickness of about 40 μm is formed. For example, techniques relating to a stencil printing original plate, such as performing stencil printing, have been adopted. Such an original plate for stencil printing is secured to a predetermined strength by bonding a porous flexible sheet, and it is very convenient for stencil printing because skewing or wrinkling does not occur during transportation. Such a flexible sheet is generally called a porous base or a porous base material because it is a porous sheet that allows ink to pass therethrough. The details of the technology for performing thermal plate making using the stencil printing plate are disclosed in, for example, JP-A-63-30295. By the way, a porous flexible sheet and a thermoplastic resin film are bonded together, and in order to create the above-mentioned original plate, a relatively large amount of adhesive must be used for bonding. Due to the variation in the amount of adhesive applied, a phenomenon often occurs in which the transmission of ink is blocked in a large amount.

[0003] If the permeability of the ink locally deteriorates in this way, even if the heat-sensitive perforation of the thermoplastic resin film is normally performed, the portion where the penetration of the ink is blocked may be a part of the printed image. White spots are likely to occur.
In other words, there is a problem in that white spots are scattered, that is, a so-called printed image with poor solid filling is obtained. or,
As a technique for solving the above-mentioned problems, as an example of a porous flexible sheet, without using Japanese paper, an example in which fibers having a uniform thickness are arranged regularly,
For example, as shown in Japanese Patent Application Laid-Open No. 60-87094, there is a problem that the cost is increased if fibers having a uniform thickness are used. On the other hand, recording methods such as thermal transfer recording and ink jet recording have been frequently used in recent years. Japanese Patent Application Laid-Open No. 9-48105 discloses a method in which a predetermined hole sealing portion is formed on a porous flexible sheet using a thermal transfer method or an inkjet method without using a thermoplastic resin film using this method. Are known. This means that in the case of the inkjet method, the solid ink is heated and melted and sprayed to create the pattern of the master,
The created pattern is heated again and melted and diffused inside the stencil printing plate material to form a printing ink filling pattern.

[0004]

As described above, as described above,
No. -48105 discloses a technique of forming a predetermined sealing portion using a thermal transfer method or an ink jet method on a porous flexible sheet without using a thermoplastic resin film. Speaking of the inkjet method,
This is a method for producing a stencil printing plate precursor in which a solid ink is heated and melted and sprayed to form a hole sealing portion, and the formed pattern is heated again to melt and diffuse inside the stencil printing plate material to form a sealing pattern. However, in the method of forming the sealing portion using the thermal transfer method, the thermal transfer ink sheet used, depending on the image pattern, generates a large amount of ink that is discarded without contributing to image formation. ,
As a result, the cost tends to be high. Further, when the ink is melted by the heating element, the temperature distribution of the heating element, the non-uniformity of the thermal conductivity of the ink sheet or the substrate on which the ink is coated, and the thermal conductivity of the support that supports the ink sheet from the back surface, etc. As a result, the manner in which the ink is melted becomes non-uniform, and the dot pattern of the resulting image becomes non-uniform, which causes deterioration in image quality. Further, it is difficult to increase the resolution by the writing method using the heating element array, but if the writing method using a laser is adopted, there is a problem that the apparatus becomes expensive.

[0005] On the other hand, such a problem does not occur when the ink jet system is used, but the ink used is a solid ink which is solid at normal temperature and melts only by heating, and is used for some special purposes. Although used in an ink jet printer, it is an unusual special ink, so it is expensive, and there is a problem that it is difficult to reduce the cost of plate production by using an inexpensive ink. In addition, JP-A-11-10
As shown in Japanese Patent No. 861, it is essential that the head portion of the solid-state ink jet printer is provided with a heater for melting the solid ink. However, if a heater is used, the temperature of the actuator portion for discharging the ink is reduced. To 120 ° C. or higher, causing distortion in the configuration of the head portion, which adversely affects ink ejection. A solution to this problem is also disclosed in
A proposal has already been made in -10861. However, a recording head for a solid ink jet provided with the above-described heater is extremely expensive than a recording head for a normal ink jet. Furthermore, as shown in the above-mentioned Japanese Patent Application Laid-Open No. H11-10861, if measures are taken against the heat generated by the heater, a further increase in cost is unavoidable. Further, in addition to a heater for melting the solid ink, in order to diffuse the ink inside the stencil printing material having a porous or particulate form, to heat-treat at least the sealing portion formed of the ink. However, there is a problem that a considerable power and cost are required for the heating device. Accordingly, the present invention employs an intermediate transfer type ink jet recording method using a powder that is a water-absorbing material known as one type of ink jet recording, and aims to solve the various problems described above. A first object of the present invention is to use a stencil printing plate material on which an original printing plate is prepared by applying an ink-jet recording system of an intermediate transfer system using a powder that is a water-absorbing material and an expensive thermoplastic film is stuck. It is to provide a technology that does not have.

A second object is to adopt an ink-jet recording system of an intermediate transfer system using a powder which is a water-absorbing material, so that a stencil printing plate material having a porous or particulate form is used. It is an object of the present invention to realize a stencil printing plate having improved mechanical strength by forming a filling portion of ink with a material that can penetrate a stencil printing plate material. The third purpose is
To realize an apparatus and method for manufacturing a stencil printing plate precursor that does not use an expensive stencil printing plate material on which a thermoplastic film is stuck, and that does not generate unnecessary projections due to the penetration of ink into the stencil printing plate material. It is in. The fourth object is to use an expensive stencil printing plate material on which a thermoplastic film is stuck,
An object of the present invention is to realize an image forming apparatus and a method using a stencil printing plate precursor in which unnecessary projections are not generated due to penetration of a stencil printing plate material by ink filling portions. A fifth object is to realize an output device that can selectively use two types of image forming apparatuses, such as stencil printing or an ink jet printer, according to the required number of copies of an output image. A sixth object is to improve printing durability by increasing the fixing force between the stencil printing plate and the sealing member. A seventh object is to realize an image forming apparatus capable of performing multicolor printing by connecting a plurality of the image forming apparatuses.

[0007]

In order to achieve the above object, the invention according to claim 1 uses a material for a printing plate precursor that can be melted or swelled by a liquid and that can increase the viscosity of the liquid. The most important feature is a printing original plate on which a sealing portion of a printing material such as ink is formed. The invention of claim 2 is characterized in that, in the printing original plate according to claim 1, the printing original plate material is a flexible sheet having a porous or particulate form. According to a third aspect of the present invention, in the printing original plate according to the first aspect, a material is a powder that can be melted or swelled by a liquid and can increase the viscosity of the liquid. Claim 4
The main feature of the invention of the first aspect is that the liquid used for forming the sealing portion is a colorless liquid. A fifth aspect of the present invention is characterized in that, in the printing original plate according to any one of the first to fourth aspects, the printing original plate is an original plate used for stencil printing. According to a sixth aspect of the present invention, there is provided an intermediate transfer member, a sealing portion forming means for forming a sealing portion of a printing material such as ink on the intermediate transfer member, and a sealing portion formed by the sealing portion forming means. The most important feature is a stencil printing plate manufacturing apparatus provided with a transfer means for transferring to a stencil printing plate material having a porous or particulate form. Claim 7
The invention is an intermediate transfer body, a sealing portion forming means for forming a sealing portion of a printing material such as ink on the intermediate transfer body, a peeling means for peeling the sealing portion from the intermediate transfer body, A liquid applying means for applying a liquid to a material which can be melted or swelled by the liquid remaining on the intermediate transfer member and which can increase the viscosity of the liquid; The most important feature is a stencil printing plate manufacturing apparatus having a transfer means for transferring to a stencil printing plate material in the form.

According to an eighth aspect of the present invention, in the stencil printing plate manufacturing apparatus of the sixth and seventh aspects, the sealing portion forming means is capable of melting or swelling on the intermediate transfer member with a liquid and increasing the viscosity of the liquid. The most important feature is a stencil printing plate manufacturing apparatus including an application unit for applying a material that can be made to work and / or a liquid application unit that applies a liquid to a material whose viscosity can be increased by a liquid. The ninth aspect of the present invention is characterized in that, in the stencil printing plate manufacturing apparatus according to the sixth to eighth aspects, the liquid applying means is a stencil printing original plate manufacturing apparatus which is a means for freely spraying and applying a liquid. According to a tenth aspect of the present invention, after a material that can be melted or swelled by a liquid and that can increase the viscosity of the liquid is applied onto the intermediate transfer body, a liquid is applied to the material to form a printing material such as ink. The most important feature is a method for producing a stencil printing plate precursor, comprising a step of forming a sealing portion and a step of transferring the sealing portion to a stencil printing plate material having a porous or particulate form. The invention according to claim 11 is to apply a material that can be melted or swelled by a liquid and increase the viscosity of the liquid onto the intermediate transfer body, and then apply a liquid to the material to form a printing material such as ink. Forming a sealing portion, removing the sealing portion from the intermediate transfer body, and melting or swelling the liquid remaining on the intermediate transfer body after peeling, and increasing the viscosity of the liquid. The most important method for producing a stencil printing plate precursor comprises a step of applying a liquid to a material capable of being transferred, and a transfer step of transferring the remaining material provided with the liquid to a stencil printing plate material having a porous or particulate form. Features. According to a twelfth aspect of the present invention, there is provided an intermediate transfer member, a sealing portion forming means for forming a sealing portion of a printing material such as ink on the intermediate transfer member, and a sealing portion formed by the forming means being porous. Or a stencil printing plate produced by using a transfer means for transferring to a stencil printing plate material having a particulate form, a plate cylinder, an ink supply device provided inside the plate cylinder, and formed by the stencil printing plate precursor The most important feature is an image forming apparatus provided with a transfer unit for transferring the formed image onto a recording medium by pressing. The invention according to claim 13 is an intermediate transfer member,
A sealing portion forming means for forming a sealing portion of a printing material such as ink on the intermediate transfer body, a peeling means for peeling off the sealing portion from the intermediate transfer body, and remaining on the intermediate transfer body after peeling Liquid applying means for applying a liquid to a material which can be melted or swelled by a liquid to be applied and which can increase the viscosity of the liquid, and stencil printing provided with a porous or particulate form of the remaining material applied with the liquid A stencil printing original plate manufactured by using a transfer means for transferring to a stencil material, a plate cylinder, an ink supply device provided inside the plate cylinder, and an image formed by the stencil printing plate is pressed onto a recording medium. The most important feature is an image forming apparatus having a transfer unit for transferring.

According to a fourteenth aspect of the present invention, after a material whose viscosity can be increased by a liquid is applied to the intermediate transfer member, a liquid is applied to the material to form a sealing portion for a printing material such as ink. After forming the stencil printing plate by transferring the sealing portion to a stencil printing material having a porous or particulate form, the stencil is wound around a plate cylinder, and the ink provided inside the plate cylinder is provided. The most important feature is an image forming method in which ink is supplied from a supply device and an image formed by the stencil printing plate is transferred under pressure to a recording medium. The invention according to claim 15 is to form a sealing portion of a printing material such as ink by applying a liquid capable of increasing the viscosity by a liquid on the intermediate transfer body, and then applying the liquid to the material. Thereafter, the sealing portion is peeled off from the intermediate transfer body, and a liquid that can be melted or swelled by a liquid remaining on the intermediate transfer body after peeling and that can increase the viscosity of the liquid is provided with a liquid, A stencil printing plate is prepared by transferring the remaining material to which the liquid has been applied to a stencil printing plate material having a porous or particulate form, and thereafter, the stencil is wound around a plate cylinder, and the inside of the plate cylinder is formed. The main feature is an image forming method in which ink is supplied from an ink supply device provided and an image formed by the stencil printing plate is transferred under pressure to a recording medium. According to a sixteenth aspect of the present invention, in the image forming apparatus according to the thirteenth aspect, when forming the sealing portion to be peeled off, a liquid that can be melted or swelled by a liquid and that can increase the viscosity of the liquid An ink jet recording head is used as a liquid applying unit that ejects ink, an image is formed by using an ink-jet type color ink, and the image is peeled off while being transferred onto a recording paper, while the intermediate transfer body after peeling is formed. The liquid is applied to a material that can be melted or swelled by the liquid remaining on the material and can increase the viscosity of the liquid,
The stencil printing plate is prepared by transferring the material after the liquid is peeled off to a stencil printing plate material having a porous or particulate form, thereby forming an image by inkjet and an image by stencil printing. The most important feature is an image forming apparatus that coexists with image formation.

According to a seventeenth aspect of the present invention, in the image forming method according to the sixteenth aspect, a material which can be melted or swelled by a liquid and can increase the viscosity of the liquid by an ink jet recording head of an ink jet recording system is used. An image is formed by ejecting a colored liquid such as ink, and the image is formed by peeling and transferring the image onto recording paper, while being capable of melting or swelling with the liquid remaining on the intermediate transfer body after peeling, and A liquid is applied to a material capable of increasing the viscosity of the liquid, and the material after peeling to which the liquid has been applied is transferred to a stencil printing plate material having a porous or particulate form to prepare a stencil printing plate precursor By doing
An image forming method, wherein image forming by ink jet and image forming by stencil printing coexist. The invention according to claim 18 is the invention according to claims 6, 7, 8, 9, 13
17. The stencil printing plate manufacturing apparatus according to any one of the first and second aspects, further comprising a heating means for heating the stencil printing plate to which the sealing portion has been transferred. Claim 19
The main feature of the present invention is that in the image forming apparatus according to any one of the twelfth, thirteenth and sixteenth aspects, a heating means for heating the stencil printing plate to which the sealing portion has been transferred is provided. The invention according to claim 20 is based on claims 10, 11, 14,
18. The image forming method according to any one of items 15 and 17, characterized in that the stencil printing plate to which the sealing portion has been transferred is heated. According to a twenty-first aspect of the present invention, in the image forming apparatus of the twentieth aspect, the heating means for heating the stencil printing plate to which the sealing portion has been transferred is a transfer means for transferring the sealing member from the intermediate transfer body to the stencil printing plate. The main feature is to also serve as The invention of claim 22 is the invention of claims 19 and 2
The main feature is that multi-color printing is enabled by arranging a plurality of the image forming apparatuses described in 1 above with respect to a transported printing paper.

[0011]

According to the first aspect of the present invention, the printing original plate material includes:
Since a sealing portion of a printing material such as ink is formed using a material that can be melted or swelled by a liquid and can increase the viscosity of the liquid, it is a material of the original plate as in the related art. There is no need to use a thermoplastic film, and therefore, there is no density unevenness caused by uneven thermal conductivity due to non-uniform glue used for attaching the film, and extremely high quality images can be obtained. A printing original plate to obtain can be secured. According to the second aspect of the present invention, in the printing original plate according to the first aspect, since the printing original plate material is a flexible sheet having a porous or particulate form, a commercially available printing plate is used. The original plate material can be used immediately, and a printing original plate can be obtained without extra cost. According to the third aspect of the present invention, in the printing plate precursor of the first aspect, the material that can be melted or swelled by the liquid and can increase the viscosity of the liquid is a powder. Penetrates and diffuses into the printing original plate material to harden the original plate itself, so that the mechanical strength during printing is improved and the number of printable sheets can be increased. According to a fourth aspect of the present invention, in the printing plate precursor of the first aspect, since the liquid used for forming the sealing portion is a colorless liquid, the white sealing material which is completely colorless or of a powder color is used. A stop portion can be obtained, and unnecessary stains generated from the sealing portion during stencil printing can be eliminated. According to a fifth aspect of the present invention, in the printing original plate according to any one of the first to fourth aspects, the printing original plate is used for stencil printing. . The invention according to claim 6, wherein the intermediate transfer member, a sealing portion forming means for forming a sealing portion of a printing material such as ink on the intermediate transfer member, and a sealing portion formed by the sealing portion forming means Is provided with a transfer means for transferring the stencil printing plate material to a porous or particulate stencil printing plate material, so that the process from input of data to be printed to production of the stencil printing plate precursor can be automatically processed, and productivity can be improved. Can be improved. According to a seventh aspect of the present invention, there is provided an intermediate transfer member, a sealing portion forming means for forming a sealing portion of a printing material such as ink on the intermediate transfer member, and peeling the sealing portion from the intermediate transfer member. Peeling means, liquid applying means for applying a liquid to a material which can be melted or swelled by the liquid remaining on the intermediate transfer member and which can increase the viscosity of the liquid, and a porous material for the remaining material applied with the liquid. Stencil printing machine, which has a transfer means for transferring the material to the stencil printing plate material in the form of particles or particles. A stencil printing plate that can easily obtain a high-resolution image can be obtained without any breakage of the line or the disappearance of the dot even if there is a little.

According to a twentieth aspect of the present invention, in the stencil printing plate manufacturing apparatus of the sixth and seventh aspects, the sealing portion forming means includes:
Conventional stencil printing includes a coating means for applying a material whose viscosity can be increased by a liquid and / or a liquid applying means for applying a liquid to a material whose viscosity can be increased by a liquid on the intermediate transfer member. It is not necessary to use a material in which a thermoplastic film is stuck on a porous medium such as Japanese paper, which is used as a material, so that the number of bonding steps for sticking can be reduced and an inexpensive stencil printing plate can be obtained. According to a ninth aspect of the present invention, in the stencil printing plate manufacturing apparatus of the sixth to eighth aspects, the liquid applying means is a means for freely spraying and applying a liquid. A fine sealing portion can be formed, and a desired stencil printing plate can be obtained. In a tenth aspect of the present invention, a step of forming a sealing portion of a printing material such as ink after applying a material capable of increasing the viscosity by a liquid on the intermediate transfer body, and then applying the liquid to the material. Transferring the sealing portion to a stencil printing plate material having a porous or particulate form, so that the stencil printing plate manufacturing method of the present invention merely forms the sealing portion by transfer. Since uniformity of thermal properties is not required, the thermal conductivity of the stencil printing plate material, which is common in the conventional method of perforating the ink-permeable portion by heating a thermoplastic film with a heating element or laser light, is not required. The density unevenness of the output image due to the unevenness does not occur at all, and therefore, there is little restriction on the material. In addition, since the powder melted by the liquid quickly penetrates into the inside of the porous medium by being transferred, it has almost no protruding portion from the surface of the stencil printing plate, and the mechanical strength at the time of printing is the same as the conventional one. It is significantly stronger than one using a thermoplastic film and can prevent the occurrence of defects during printing. The present invention according to claim 11 is a step of applying a liquid capable of increasing the viscosity by a liquid onto the intermediate transfer body, and then applying a liquid to the material to form a sealing portion of a printing material such as ink. Removing the sealing portion from the intermediate transfer body, and applying a liquid to a material that can be melted or swelled by a liquid remaining on the intermediate transfer body after the separation and that can increase the viscosity of the liquid. And a transfer step of transferring the remaining material to which the liquid has been applied to a stencil printing plate material having a porous or particulate form, so that a method of manufacturing a stencil printing plate precursor for directly drawing a sealing portion. To obtain a stencil printing plate that can easily obtain a high-resolution image without breaking the line or losing the dot even if there is some bleeding of the liquid, especially when drawing fine lines or isolated dots It can be.

According to a twelfth aspect of the present invention, there is provided an intermediate transfer member, a sealing portion forming means for forming a sealing portion of a printing material such as ink on the intermediate transfer member, and a sealing member formed by the forming means. Stencil printing plate manufactured using transfer means for transferring a portion to a stencil printing plate material having a porous or particulate form, a plate cylinder, an ink supply device provided inside the plate cylinder, and the stencil It is equipped with a transfer unit that transfers the image formed by the printing master onto the recording medium under pressure, so it is possible to automatically process the input of the printing target, the creation of the master, and the printing, thereby improving printing productivity. Can be planned. According to a thirteenth aspect of the present invention, there is provided an intermediate transfer member, a sealing portion forming means for forming a sealing portion of a printing material such as ink on the intermediate transfer member, and peeling the sealing portion from the intermediate transfer member. Peeling means, liquid applying means for applying a liquid to a material which can be melted or swelled by the liquid remaining on the intermediate transfer body after peeling and which can increase the viscosity of the liquid, and a liquid applied remaining A stencil printing plate manufactured using a transfer means for transferring a material to a stencil printing plate material having a porous or particulate form, a plate cylinder, an ink supply device provided inside the plate cylinder, and the stencil plate It is equipped with a transfer unit that transfers the image formed by the printing plate to the recording medium under pressure, so that it is possible to automatically process the input of the printing target, the preparation of the original plate, and the printing, thereby improving the printing productivity. In addition to being able to plan, If you want to print lines and isolated dots,
A high-resolution image can be easily obtained. Claim 1
The present invention of 4 is that, after applying a material whose viscosity can be increased by a liquid to the intermediate transfer body, a liquid is applied to the material to form a sealing portion of a printing material such as ink, and the sealing is performed. After the stencil printing plate is prepared by transferring the portion to a stencil printing material having a porous or particulate form, the stencil is wound around a plate cylinder, and ink is supplied from an ink supply device provided inside the plate cylinder. Is supplied, and the image formed by the stencil printing master is transferred under pressure to a recording medium, so that input of a printing target, preparation of the master, and printing can be automatically performed, thereby improving printing productivity. Can be achieved.

According to a fifteenth aspect of the present invention, on the intermediate transfer member,
After applying a material whose viscosity can be increased by a liquid, a sealing portion of a printing material such as ink is formed by applying a liquid to the material, and then the sealing portion is peeled off from the intermediate transfer body. A liquid is applied to a material that can be melted or swelled by a liquid remaining on the intermediate transfer body after peeling and that can increase the viscosity of the liquid, and the remaining material to which the liquid has been applied is made of porous material or particles. Create a stencil printing plate by transferring it to a stencil printing plate material
Thereafter, the original plate is wound around a plate cylinder, ink is supplied from an ink supply device provided inside the plate cylinder, and the image formed by the stencil printing plate is transferred under pressure to a recording medium. It is possible to automatically process the input of the print target, the preparation of the original, and the printing, which can improve the productivity of printing.In addition, when printing thin lines and isolated dots, images with high resolution can be easily processed. Can be obtained. According to a sixteenth aspect of the present invention, in the image forming apparatus according to the thirteenth aspect, in forming the peeled sealing portion, a material that can be melted or swelled by a liquid and that can increase the viscosity of the liquid is used. The liquid applying means for ejecting liquid is an ink jet recording head, and an image is formed by using the applied liquid as ink-jet colored ink,
While the image is peeled while being transferred to recording paper, a liquid is applied to a material that can be melted or swelled by a liquid remaining on the intermediate transfer body after the peeling and can increase the viscosity of the liquid, Is transferred to a stencil printing plate material having a porous or particulate form, so that a stencil printing plate can be prepared, so that image formation by inkjet and image formation by stencil printing can be performed. It is possible to coexist, and it is possible to selectively use an ink jet printer and stencil printing in accordance with the required number of copies of printed material to be printed, so that the cost performance of printing can be dramatically improved. According to a seventeenth aspect of the present invention, there is provided the image forming method according to the fifteenth aspect, wherein a material which can be melted or swelled by a liquid and can increase the viscosity of the liquid by an ink jet recording head of an ink jet recording system is used. While forming an image by ejecting, the image is formed while peeling and transferring the image to recording paper,
A liquid is applied to a material that can be melted or swelled by the liquid remaining on the intermediate transfer body after peeling and can increase the viscosity of the liquid, and the remaining material to which the liquid has been applied is made porous or particulate. The stencil printing plate is transferred to a stencil printing plate material having a form, so that the image formation by ink jet and the image formation by stencil printing coexist. It is possible to use a printer and stencil printing properly, and the cost performance of printing can be dramatically improved.

The invention according to claim 18 is the invention according to claims 6, 7, 8,
17. The stencil printing plate manufacturing apparatus according to any one of 9, 13 and 16, wherein the sealing unit is provided with heating means for heating the transferred stencil printing plate. The stop member is more firmly fixed to the stencil printing plate, so that a stencil printing plate capable of printing a larger number of sheets can be manufactured. The invention of claim 19 is the invention of claim 1
17. The image forming apparatus according to any one of 2, 13 and 16, further comprising a heating means for heating the stencil printing plate to which the sealing portion has been transferred, so that the sealing portion rapidly dried by heating. Is more firmly fixed to the stencil printing plate, so that a larger number of sheets can be printed. According to a twentieth aspect of the present invention, in the image forming method according to any one of the tenth, eleventh, fourteenth, fifteen, or seventeenth aspects, the stencil printing plate to which the sealing portion has been transferred is heated. The rapidly dried sealing portion adheres more firmly to the stencil printing plate, so that a larger number of sheets can be printed. Claim 2
According to a first aspect, in the image forming apparatus according to the twentieth aspect,
Since the heating means for heating the stencil printing plate to which the sealing portion has been transferred also serves as the transfer means for transferring the sealing member from the intermediate transfer body to the stencil printing plate, the number of components can be reduced, and the image forming apparatus can be reduced. Cost can be reduced. According to a twenty-second aspect of the present invention, a plurality of image forming apparatuses according to the nineteenth and twenty-first aspects are connected to a printing paper to be conveyed, thereby enabling multicolor printing. A color image forming apparatus can be configured.

[0016]

Next, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is an explanatory diagram illustrating a stencil printing plate precursor, a manufacturing apparatus, a manufacturing method, and an image forming apparatus according to a first embodiment of the present invention. Melts due to moisture absorption
Swelling / thickening powder (hereinafter referred to as setting agent) 11
Is transported from an unillustrated setting agent storage container to an intermediate transfer belt (intermediate transfer body) 21 by a setting agent application unit such as a setting agent supply roller 12, and a uniform setting agent layer 13 is applied to the intermediate transfer belt 21. ,Form. Next, a plate pattern (hereinafter, referred to as a sealing portion) 1 is formed on the intermediate transfer belt 21 by a liquid 31 containing at least water, which is jetted from an ink jet recording head (liquid applying means) 30.
4 is formed. The sealing part 14 is configured to apply the liquid 31 to the setting agent 11.
Absorbed into a gel-like substance. The setting agent applying means and the liquid applying means constitute a sealing portion forming means.
Here, the sealing agent 14 is a stencil printing original material 41 in which the setting agent 11 absorbs the liquid 31 and becomes a gel-like substance so that the printing ink 32 does not adhere to the printing paper 50 during stencil printing. This means a pattern formed by attaching objects, and in the case of an image pattern, a portion where the printing ink 32 adheres to the printing paper 50 at the time of stencil printing is executed.
It means a pattern in which the setting agent 11 absorbs liquid and becomes a gel-like substance and adheres to the stencil printing plate material 41 (detailed in FIG. 2). Intermediate transfer belt 2
The sealing portion 14 formed on the substrate 1 and in which the setting agent 11 has absorbed the liquid and has become a gel-like substance is provided with a stencil printing having a porous or particulate form wound around a stencil plate 40 for stencil printing. The stencil printing plate material 41 is transferred to a stencil printing plate material 41 by a transfer roller (transfer means) 22 and a pressing roller (transfer means) 42 opposed thereto. Penetrate as a part to play. By a doctor roller 43 and a squeegee roller 44 placed inside the printing plate 40, an appropriate amount of the printing ink 32 supplied from a printing ink supply unit (not shown) is supplied to the inner surface of the printing plate 40. The printing ink 32 that has passed through the plate copper 40 is a portion of the stencil printing plate material 41 having a porous or particulate form, other than the portion where the set agent 11 has absorbed the liquid to become a gel-like substance, that is, other than the sealing portion 14. Through the part,
The printing paper 50 fed by the paper feed roller 51 is pressed by the pressure roller 52 to be printed and transferred, and is discharged to the paper discharge tray 53 to complete printing. Further, the stencil printing plate material 41 is rolled up by a wrapping means (not shown).
And after use, is removed from the plate copper 40 by a removing means (not shown). The stencil printing plate is created by transferring the above-described sealing portion 14 from the intermediate transfer belt 21 to the stencil printing plate material 41 wound around the plate copper 40, and the stencil printing plate is actually prepared. By mechanically separating the intermediate transfer belt 21 and the plate copper 40, the printing ink 32
It is configured so that unnecessary stains caused by adhering to the device 1 can be avoided.

In FIG. 1, the setting agent 1 to which the liquid 31 was not applied and which was not transferred to the stencil printing plate material 41 was used.
1 is configured to be removed from above the intermediate transfer belt 21 by the scraping blade 70, but the present invention is not limited to this, and when the setting agent 11 has not yet absorbed moisture, With the supply roller 12, a new setting agent 11 can be applied again thereon and reused. Since the setting agent 11 absorbs the moisture of the liquid 31, melts and swells, and has increased viscosity, the stencil printing plate material easily provided with a porous or particulate form by the transfer roller 22. 41, and functions as a seal for sealing the printing ink 32 in stencil printing. The viscosity of the setting agent 11 that has absorbed the moisture does not continue forever, and the moisture of the setting agent 11 diffuses or evaporates into the stencil printing plate material 41, so that the viscosity disappears. Never. In addition, as long as the oil-based printing ink 32 is used, the oil-based printing ink 32 is
This does not pose a problem since it does not melt, swell, or thicken No. 1. Further, in preparing the stencil printing plate, it is not necessary to form a visible image on the intermediate transfer belt 21 with a liquid, so that it is not necessary to add a coloring material to the liquid. Therefore, there is usually no need for an additive such as a humectant or a pH adjuster for preventing drying of the ink, and the sealing portion 14 may be formed using a liquid substantially composed of water. That is, the cost of the liquid used for image recording is almost unnecessary, and the stencil printing plate can be manufactured at extremely low cost. Further, as described above, since the setting agent 11 melted by the liquid 31 penetrates the stencil printing plate material 41, a perforated portion generated when a conventional thermoplastic film is bonded to a porous base material such as Japanese paper is used. There is almost no unevenness, and no defects such as peeling of the film from the uneven portion at the time of printing do not occur, and therefore, it has a feature of high mechanical strength and high print resistance.

In the above description, it has been described that the sealing portion 14 is formed directly on the intermediate transfer belt 21 with a liquid by drawing. However, it is also possible to form an image pattern on the intermediate transfer belt 21 once, then peel off and remove the image pattern portion, and use the remaining portion as the sealing portion 14. FIG. 2 shows such an embodiment as a second embodiment of the present invention.
It will be described based on. As shown in FIG. 2, the setting agent 15 melted, swelled and thickened by the liquid 31 is applied to the intermediate transfer belt 2.
1. Prepare a removing means for removing from above. This removing means is made of a material having a lower releasability than the material of the intermediate transfer belt 21. For example, a member such as a removing roller (peeling means) 71 shown in FIG. The agent 15 is attached and removed. The removed setting agent 15 is scraped off from the removing roller 71 by, for example, a scraping blade 73 or the like, and is discarded. Here, the remaining portion from which the setting agent 15 corresponding to the image pattern has been removed corresponds to the sealing portion 14 shown in FIG. 1. Alternatively, a sufficient humidity for melting, swelling and thickening is applied. Also in this case, the image is not written, but only the remaining set agent 11 needs to be moistened, and no resolution is required.
Low-resolution liquid application means is sufficient. Of course, a recording head for ink jet may be used as the liquid applying means. Also, using an ultrasonic transducer like a humidifier,
The liquid may be vaporized and provided to the setting agent 11. Either method may be used, but the setting agent 11 is melted, swelled, and thickened so as to form the sealing portion 14. Thereafter, the stencil printing plate precursor is completed by transferring the stencil printing plate material 41 having a porous or particulate form.
In a high-precision device capable of accurately writing an image, even if the sealing portion 14 is directly drawn on the intermediate transfer belt 21, the setting agent 15 corresponding to the image pattern is created once, and after removing this portion, Sealing part 1 on the remaining part
No. 4 produces the same result. However, in actuality, there are deterioration factors such as uneven feeding of the intermediate transfer belt 21, nonuniform dot size, and bleeding of the liquid used for drawing to the surroundings. The method of FIG. 2) has a problem that thin lines are easily broken and isolated dots are hard to be reproduced in a highlight portion, compared with the case where the setting agent 15 corresponding to the image pattern is created first. Generally, in a natural image, the reproducibility of a highlight portion is more important for image quality than the reproducibility of a shadow portion, and it can be said that the above-described problem has a greater effect on image quality. Also, in a line drawing, it is permissible that the line becomes slightly thicker, but that the line is cut off or disappears in most cases. From this point of view, the above-described problem is less likely to occur in the method of creating the set agent 15 corresponding to the image pattern and removing this portion to form the sealing portion 14, and a special method for solving the above-described problem It is highly advantageous in that high-quality images can be obtained with a relatively inexpensive system without the need for simple image processing.

Further, an application example of the second embodiment in which the setting agent 15 corresponding to the image pattern is once prepared will be described as a third embodiment. As shown in FIG. 3, the image writing in the second embodiment is performed by using the inkjet colored ink 3.
5, and transfers the setting agent 15 corresponding to the drawn image pattern onto the recording paper 55,
The intermediate transfer type ink-jet printer using the powder is simply constituted by discharging the ink to the discharge port 4. Details of the ink jet printer using the intermediate transfer type recording method are described in detail in Japanese Patent Application No. 9-359208, which is a prior application of the present applicant. Therefore, it is possible to have both functions of a stencil printing apparatus and an ink jet printer recording apparatus, and output a small number of copies using the ink jet printer, and use a stencil printing apparatus when a large amount of output is required. It is possible to provide an image forming apparatus that can be selectively used according to the required number of print copies, for example, by using an image forming apparatus. Note that the configuration and operation of the stencil printing apparatus are the same as those shown in FIG. Also, the recording head can be different between when used as an ink jet printer and when creating a stencil printing plate. With such a configuration, it is not possible to create a stencil printing plate that does not need to create a visible image. It is also possible to avoid consuming necessary ink.
The image of the stencil printing plate to be created is a monochrome image or a monochrome image obtained by color separation of a color image,
An ink jet printer can create a monochrome image or a color image by using one of the recording heads. Further, the pressure roller 74 for pressing the recording paper 55 for ink-jet printing against the intermediate transfer belt 21 in FIG. 3 can also be used as the removing roller 71 in FIG. 2, and in this case, the number of components can be reduced.

Next, FIGS. 4 and 5 show examples in which a heating roller is added to the embodiment shown in FIGS. 1 and 2, respectively.
Further, a heating roller can be added to the example of FIG. Based on FIGS. 4 and 5, the sealing portion 14 formed on the intermediate transfer belt 21 described in the first, second, and third embodiments is transferred to the stencil printing plate material 41, and then heated. A fourth embodiment for strengthening will be described. The sealing portion 14 formed on the intermediate transfer belt 21 is the stencil printing plate material 4
After being transferred to 1, it is heated by a heating roller (heating means) 45 and simultaneously pressed. Due to the heating, the sealing portion that has been transferred onto the stencil printing plate material 41 dries rapidly, and the adhesive force with the fiber portion forming the stencil printing plate material is improved. If the heating roller 45 shown in FIGS. 4 and 5 is used in combination with the pressing roller 42 described in each embodiment or the roller 22 opposed thereto, the sealing portion is transferred and heated and dried. With a simpler structure, the fixing force between the stencil printing plate material and the fiber portion forming the stencil printing plate material can be improved. Alternatively, the roller 22 or the pressing roller 42 may function as a heating unit. Next, the configuration of each of the above embodiments can be applied to a full-color printing apparatus using four color inks of cyan, magenta, yellow, and black. As shown in FIG. 6, the color stencil printing apparatus includes a stencil printing plate manufacturing means and the number of color stencils using the stencil printing apparatus, that is, a cyan stencil 80, a magenta stencil 81,
It can be configured by connecting only the yellow master 82 and the black master 83. Although FIG. 6 shows a configuration in which the apparatus having the configuration shown in FIG. 5 is connected for four plates, the apparatus having the configuration shown in FIG. 4 may be connected for four original plates. By connecting in this manner, a color image forming apparatus can be easily configured.

[0021]

According to the first aspect of the present invention, there is provided a printing original plate material comprising:
Since a sealing portion of a printing material such as ink using a material that can be melted or swelled by a liquid and can increase the viscosity of the liquid is formed, an original plate is formed on the printing material as in the related art. It is not necessary to use a thermoplastic film, which is a material of the above, and there is no density unevenness caused by uneven heat conductivity due to non-uniform glue used for attaching the film, and extremely high image quality can be obtained. A printing original plate from which an image can be obtained was provided. According to a second aspect of the present invention, in the printing original plate according to the first aspect, the printing original plate material is a flexible sheet having a porous or particulate form. It was possible to provide a printing plate that could be used immediately and had no extra cost. Claim 3
According to the present invention, in the printing original plate according to the first aspect, the material that can be melted or swelled by a liquid and can increase the viscosity of the liquid is a powder. As a result, the original plate is hardened, so that the mechanical strength during printing is improved and the number of printable sheets can be increased. According to a fourth aspect of the present invention, in the printing plate precursor according to the first aspect, the liquid used for forming the sealing portion is a colorless liquid, and therefore, the colorless or powdery white sealing material is used. It was possible to provide a printing original plate capable of obtaining a stop portion and eliminating any stain generated from the sealing portion during stencil printing. According to a fifth aspect of the present invention, in the printing original plate according to any one of the first to fourth aspects, the printing original plate is used for stencil printing. We have been able to provide a printing original plate that can be used. The invention according to claim 6, wherein the intermediate transfer member, a sealing portion forming means for forming a sealing portion of a printing material such as ink on the intermediate transfer member, and a sealing portion formed by the sealing portion forming means Is provided with a transfer means for transferring the stencil printing plate material to a porous or particulate stencil printing plate material. A stencil printing plate manufacturing apparatus that can be improved can be provided. According to a seventh aspect of the present invention, there is provided an intermediate transfer member, a sealing portion forming means for forming a sealing portion of a printing material such as ink on the intermediate transfer member, and peeling the sealing portion from the intermediate transfer member. Peeling means, liquid applying means for applying a liquid to a material which can be melted or swelled by the liquid remaining on the intermediate transfer member and which can increase the viscosity of the liquid, and a porous material for the remaining material applied with the liquid. Since the stencil printing machine has a transfer means for transferring the material to the stencil printing plate material in a granular or particulate form,
Especially when drawing fine lines or isolated dots, even if there is some bleeding of the liquid, the lines do not break or the dots do not disappear, and it is possible to obtain a stencil printing plate that can easily obtain a high resolution image. A stencil printing plate manufacturing apparatus could be provided.

According to a twentieth aspect of the present invention, in the stencil printing plate manufacturing apparatus according to the sixth and seventh aspects, the sealing portion forming means includes:
Conventional stencil printing includes a coating means for applying a material whose viscosity can be increased by a liquid and / or a liquid applying means for applying a liquid to a material whose viscosity can be increased by a liquid on the intermediate transfer member. It is not necessary to use a material in which a thermoplastic film is pasted on a porous medium such as Japanese paper, which is used as a material, and it is possible to obtain an inexpensive stencil printing plate with a reduced number of bonding steps for pasting. A printing original plate manufacturing apparatus could be provided.
According to a ninth aspect of the present invention, in the stencil printing plate manufacturing apparatus according to the sixth to eighth aspects, the liquid applying means is a means for freely ejecting and applying a liquid. A stencil printing plate manufacturing apparatus capable of obtaining a printing plate was provided. In a tenth aspect of the present invention, a step of forming a sealing portion of a printing material such as ink after applying a material capable of increasing the viscosity by a liquid on the intermediate transfer body, and then applying the liquid to the material. And the step of transferring the sealing portion to a stencil printing plate material having a porous or particulate form, so that the stencil printing plate manufacturing method of the present invention merely forms the sealing portion by transfer. Since uniformity of thermal properties is not required, the thermal conductivity of the stencil printing plate material, which is common in the conventional method of perforating the ink-permeable portion by heating a thermoplastic film with a heating element or laser light, is not required. The density unevenness of the output image due to the unevenness does not occur at all, and therefore, there is little restriction on the material.
In addition, since the powder melted by the liquid quickly penetrates into the inside of the porous medium by being transferred, it has almost no protruding portion from the surface of the stencil printing plate, and the mechanical strength at the time of printing is the same as the conventional one. A method for producing a stencil printing plate precursor was provided which is significantly stronger than that using a thermoplastic film and can prevent the occurrence of defects during printing.
The present invention according to claim 11 is a step of applying a liquid capable of increasing the viscosity by a liquid onto the intermediate transfer body, and then applying a liquid to the material to form a sealing portion of a printing material such as ink. Removing the sealing portion from the intermediate transfer body, and applying a liquid to a material that can be melted or swelled by a liquid remaining on the intermediate transfer body after the separation and that can increase the viscosity of the liquid. And a transfer step of transferring the remaining material to which the liquid has been applied to a stencil printing plate material having a porous or particulate form, so that a method for producing a stencil printing plate precursor that directly draws a sealing portion Than,
Especially when drawing fine lines or isolated dots, even if there is some bleeding of the liquid, the lines do not break or the dots do not disappear, and it is possible to obtain a stencil printing plate that can easily obtain a high resolution image. A stencil printing plate manufacturing method can be provided.

According to a twelfth aspect of the present invention, there is provided an intermediate transfer member, sealing portion forming means for forming a sealing portion of a printing material such as ink on the intermediate transfer member, and a sealing member formed by the forming member. Stencil printing plate manufactured using transfer means for transferring a portion to a stencil printing plate material having a porous or particulate form, a plate cylinder, an ink supply device provided inside the plate cylinder, and the stencil A transfer unit that presses and transfers the image formed by the printing master onto the recording medium is provided, so it is possible to automatically process the input of the printing target, the preparation of the master, and the printing, thereby improving printing productivity. An image forming apparatus that can be achieved can be provided. According to a thirteenth aspect of the present invention, there is provided an intermediate transfer member, a sealing portion forming means for forming a sealing portion of a printing material such as ink on the intermediate transfer member, and peeling the sealing portion from the intermediate transfer member. Peeling means, liquid applying means for applying a liquid to a material which can be melted or swelled by the liquid remaining on the intermediate transfer body after peeling and which can increase the viscosity of the liquid, and a liquid applied remaining A stencil printing plate manufactured using a transfer means for transferring a material to a stencil printing plate material having a porous or particulate form, a plate cylinder, an ink supply device provided inside the plate cylinder, and the stencil plate Since it is equipped with a transfer unit that transfers the image formed by the printing plate to the recording medium under pressure, it is possible to automatically process the input of the printing target, the preparation of the original plate, and the printing, thereby improving the printing productivity. In addition to being able to When printing lines and isolated dots, it is possible to provide an image forming apparatus capable of obtaining a high resolution image with ease. The invention according to claim 14 is that, after applying a material capable of increasing the viscosity by a liquid on the intermediate transfer body, a liquid is applied to the material to form a sealing portion of a printing material such as ink, After the stencil printing plate is prepared by transferring the sealing portion to a stencil printing material having a porous or particulate form, the stencil is wound around a plate cylinder, and an ink supply device provided inside the plate cylinder More ink is supplied, and the image formed by the stencil printing master is transferred under pressure to a recording medium, so that input of a printing target, preparation of the master, and printing can be automatically processed, and production of printing can be performed. An image forming method capable of improving the image quality can be provided.

According to a fifteenth aspect of the present invention, on the intermediate transfer member,
After applying a material whose viscosity can be increased by a liquid, a sealing portion of a printing material such as ink is formed by applying a liquid to the material, and then the sealing portion is peeled off from the intermediate transfer body. A liquid is applied to a material that can be melted or swelled by a liquid remaining on the intermediate transfer body after peeling and that can increase the viscosity of the liquid, and the remaining material to which the liquid has been applied is made of porous material or particles. Create a stencil printing plate by transferring it to a stencil printing plate material
Thereafter, the original plate was wound around a plate cylinder, ink was supplied from an ink supply device provided inside the plate cylinder, and the image formed by the stencil printing plate was transferred under pressure to a recording medium. It is possible to automatically process the input of the print target, the preparation of the original, and the printing, which can improve the productivity of printing.In addition, when printing thin lines and isolated dots, images with high resolution can be easily processed. The image forming method can be provided. According to a sixteenth aspect of the present invention, in the image forming apparatus according to the thirteenth aspect, in forming the peeled sealing portion, a material that can be melted or swelled by a liquid and that can increase the viscosity of the liquid is used. The liquid applying means for ejecting the liquid is an ink jet recording head, an image is formed by using the ink to be applied as a colored ink of an ink jet system, and the image is peeled while being transferred to a recording paper, while the intermediate transfer after the peeling is performed. A stencil provided with a liquid or a particulate form by applying a liquid to a material that can be melted or swelled by the liquid remaining on the body and can increase the viscosity of the liquid, and the remaining material to which the liquid has been applied is provided. By making it possible to create a stencil printing plate by transferring it to a printing stencil material, the image formation by inkjet and the stencil printing can coexist. Since the, it is possible distinguish the inkjet printer and the stencil printing according to the needs copies of printed matter to be output, it is possible to provide an image forming apparatus capable of improving the cost performance of the printing. According to a seventeenth aspect of the present invention, there is provided the image forming method according to the fifteenth aspect, wherein a material which can be melted or swelled by a liquid and can increase the viscosity of the liquid by an ink jet recording head of an ink jet recording system is colored. An image is formed by ejecting a liquid, and the image is formed by peeling and transferring the image to recording paper, while being capable of melting or swelling with the liquid remaining on the intermediate transfer body after peeling, and of the liquid. By applying a liquid to a material capable of increasing the viscosity, and transferring the material after peeling to which the liquid has been applied to a stencil printing plate material having a porous or particulate form to create a stencil printing plate precursor, Inkjet image formation and stencil image formation coexist, so an inkjet printer can be used according to the required number of copies to be output. Distinguish the stencil printing is possible, it is possible to provide an image forming method capable of improving the cost performance of the printing.

The invention according to claim 18 is based on claims 6, 7, 8,
17. The stencil printing plate manufacturing apparatus according to any one of 9, 13 and 16, further comprising heating means for heating the stencil printing plate to which the sealing portion has been transferred, so that the sealing member rapidly dried by heating. Adheres more firmly to the stencil printing plate,
A stencil printing plate manufacturing apparatus capable of manufacturing a stencil printing plate capable of printing a larger number of sheets could be provided. Claim 1
According to a ninth aspect of the present invention, in the image forming apparatus according to any one of the twelfth, thirteenth and sixteenth aspects, the image forming apparatus further includes a heating unit for heating the stencil printing plate to which the sealing part has been transferred. It was possible to provide an image forming apparatus having high printing durability by improving the fixing force with the original material. According to a twentieth aspect of the present invention, in the image forming method according to any one of the tenth, eleventh, fourteenth, fifteen, or seventeenth aspects, the stencil printing plate to which the sealing portion has been transferred is heated. Thus, it was possible to improve the fixing force between the printing plate and the stencil printing plate material, and to provide an image forming method with high printing durability. According to a twenty-first aspect of the present invention, in the image forming apparatus of the twentieth aspect, the heating means for heating the stencil printing plate to which the sealing portion has been transferred is a transfer means for transferring the sealing member from the intermediate transfer body to the stencil printing plate. Therefore, the fixing force between the sealing portion and the stencil printing plate material was improved, and an image forming method with high printing durability could be provided. According to a twenty-second aspect of the present invention, a plurality of the image forming apparatuses according to the nineteenth and twenty-first aspects are connected to a printing paper to be conveyed, thereby enabling multicolor printing. A color image forming apparatus can be provided.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram illustrating a stencil printing plate manufacturing apparatus and method and an image forming apparatus according to a first embodiment of the present invention.

FIG. 2 is an explanatory diagram illustrating a second embodiment of a stencil printing plate manufacturing apparatus and method and an image forming apparatus according to the present invention.

FIG. 3 is a third embodiment in which an inkjet printer is provided in the stencil printing plate manufacturing apparatus and method and the image forming apparatus of the present invention.
FIG. 4 is an explanatory diagram illustrating an embodiment.

FIG. 4 is an explanatory diagram illustrating a fourth embodiment in which a heating means is added to the stencil printing plate manufacturing apparatus and method of the present invention described in the second embodiment;

FIG. 5 is an explanatory diagram illustrating a fifth embodiment in which a heating means is added to the third embodiment in which an inkjet printer is provided in the stencil printing plate manufacturing apparatus and method of the present invention;

FIG. 6 is an explanatory diagram illustrating a stencil printing plate manufacturing apparatus and method and an image forming apparatus according to a fourth embodiment of the present invention, particularly an aspect as a color stencil printing apparatus.

[Explanation of symbols]

 REFERENCE SIGNS LIST 11 powder (setting agent) 12 setting agent supply roller 13 setting agent layer 14 sealing portion (plate pattern) 15 setting agent corresponding to image pattern 21 intermediate transfer belt 22 roller 23 roller 24 roller 30 liquid applying means (recording head) Reference Signs List 31 liquid 32 printing ink 33 liquid applying means (recording head) 34 liquid 35 colored ink 40 plate cylinder 41 stencil printing plate material 42 pressing roller 43 doctor roller 44 squeegee roller 45 heating roller 50 printing paper 51 paper feed roller 52 pressure roller 53 Paper ejection tray 54 Paper ejection tray 55 Recording paper 70 Scrape blade 71 Removal roller 73 Scrape blade 74 Pressure roller 80 Cyan original 81 Magenta original 82 Yellow original 83 Black original

Claims (22)

[Claims] 1. A printing plate material, wherein a sealing portion of a printing material such as ink is formed using a material which can be melted or swelled by a liquid and can increase the viscosity of the liquid. Printing original plate. 2. The printing original plate according to claim 1, wherein the printing original plate material is a flexible sheet having a porous or particulate form. 3. The printing original plate according to claim 1, wherein the material that can be melted or swelled by a liquid and that can increase the viscosity of the liquid is a powder. 4. The printing original plate according to claim 1, wherein the liquid used for forming the sealing portion is a colorless liquid. 5. A printing original plate according to claim 1, wherein said printing original plate is used for stencil printing. 6. An intermediate transfer member, a sealing portion forming means for forming a sealing portion of a printing material such as ink on the intermediate transfer member, and a sealing portion formed by the sealing portion forming means is made of a porous material. An apparatus for producing a stencil printing plate precursor, further comprising a transfer means for transferring the material to a stencil printing plate material having a particulate form. 7. An intermediate transfer member, a sealing portion forming means for forming a sealing portion of a printing material such as ink on the intermediate transfer member, and a separating means for separating the sealing portion from the intermediate transfer member. A liquid applying means for applying a liquid to a material which can be melted or swelled by the liquid remaining on the intermediate transfer body and which can increase the viscosity of the liquid; An apparatus for producing a stencil printing plate precursor, comprising a transfer means for transferring the material to a stencil printing plate material in a form. 8. The stencil printing plate manufacturing apparatus according to claim 6, wherein the sealing portion forming means is capable of melting or swelling the liquid on the intermediate transfer body with a liquid and increasing the viscosity of the liquid. An apparatus for producing a stencil printing plate precursor, comprising: an applying means for applying a liquid; and a liquid applying means for applying a liquid to the material. 9. The stencil printing plate manufacturing apparatus according to claim 6, wherein the liquid applying means is a means for freely ejecting and applying a liquid. 10. A material which can be melted or swelled by a liquid and can increase the viscosity of the liquid is applied onto the intermediate transfer member, and then the liquid is applied to the material to seal a printing material such as ink. A method for producing a stencil printing plate precursor, comprising the steps of: forming a portion; and transferring the sealing portion to a stencil printing plate material having a porous or particulate form. 11. A material that can be melted or swelled by a liquid and that can increase the viscosity of the liquid is applied onto the intermediate transfer body, and then the liquid is applied to the material to seal a printing material such as ink. Forming a portion, removing the sealing portion from the intermediate transfer body, and melting or swelling with the liquid remaining on the intermediate transfer body after peeling, and increasing the viscosity of the liquid. A method for producing a stencil printing plate precursor, comprising: a step of applying a liquid to a resulting material; and a transferring step of transferring the remaining material to which the liquid has been applied to a stencil printing plate material having a porous or particulate form. 12. An intermediate transfer member, and a sealing portion forming means for forming a sealing portion of a printing material such as ink on the intermediate transfer member,
A stencil printing plate manufactured using a stencil printing plate manufacturing apparatus including a transfer unit for transferring a sealing portion formed by the forming unit to a stencil printing plate material having a porous or particulate form, and a plate cylinder. An image forming apparatus comprising: an ink supply device provided inside a plate cylinder; and a transfer unit that presses and transfers an image formed by the stencil printing plate to a recording medium. 13. An intermediate transfer member, and a sealing portion forming means for forming a sealing portion of a printing material such as ink on the intermediate transfer member,
Peeling means for peeling the sealing portion from the intermediate transfer member,
A liquid applying means for applying a liquid to a material which can be melted or swelled by the liquid remaining on the intermediate transfer body after peeling and which can increase the viscosity of the liquid; Or a stencil printing plate manufactured using a stencil printing plate manufacturing apparatus comprising a transfer means for transferring to a stencil printing plate material having a particulate form, and a plate cylinder,
An image forming apparatus comprising: an ink supply device provided inside a plate cylinder; and a transfer unit that presses and transfers an image formed by the stencil printing plate to a recording medium. 14. A method in which a material whose viscosity can be increased by a liquid is applied to the intermediate transfer member, and then a liquid is applied to the material to form a sealing portion of a printing material such as ink, and the sealing portion is formed. Is transferred to a stencil printing material having a porous or particulate form to prepare a stencil printing plate, then the stencil is wound around a plate cylinder, and ink is supplied from an ink supply device provided inside the plate cylinder. Supplying an image formed by the stencil printing plate to a recording medium under pressure. 15. A material capable of increasing the viscosity by a liquid is applied on the intermediate transfer body, and then a liquid is applied to the material to form a sealing portion of a printing material such as ink. The sealing portion is peeled off from the intermediate transfer body, and the liquid remaining on the intermediate transfer body after peeling is melted or swellable, and the liquid is applied to a material capable of increasing the viscosity of the liquid, A stencil printing plate is prepared by transferring the applied peeled material to a stencil printing plate material having a porous or particulate form, and thereafter the stencil is wound around a plate cylinder and provided inside the plate cylinder. An image forming method comprising: supplying an ink from a supplied ink supply device; and transferring the image formed by the stencil printing plate to a recording medium under pressure. 16. The image forming apparatus according to claim 13, wherein a liquid is ejected to a material that can be melted or swelled by the liquid and that can increase the viscosity of the liquid when forming the sealing portion to be peeled off. The liquid applying means to be used is an ink jet recording head, an image is formed by using the ink to be applied as a colored ink of an ink jet system, and the image is peeled off while being transferred to a recording paper, while on the intermediate transfer body after peeling. A stencil printing plate having a porous or particulate form obtained by applying a liquid to a material that can be melted or swelled by the remaining liquid and that can increase the viscosity of the liquid, and the material after peeling to which the liquid has been applied is provided. By making it possible to create a stencil printing plate using a stencil printing plate manufacturing device that transfers it to the material, it is possible to form images by inkjet and stencil printing. An image forming apparatus characterized by coexisting with image formation. 17. The image forming method according to claim 15, wherein a colored liquid is jetted to a material that can be melted or swelled by a liquid and that can increase the viscosity of the liquid by an ink jet recording head of an ink jet recording method. An image is formed by peeling the image onto a recording paper while transferring the image to form an image, while the liquid remaining on the intermediate transfer body after peeling is capable of melting or swelling and increasing the viscosity of the liquid. Can apply liquid to the material,
The stencil printing plate precursor is prepared by transferring the material after peeling to which the liquid has been applied to a stencil printing plate material having a porous or particulate form, so that image formation by inkjet and image formation by stencil printing coexist. An image forming method characterized by the above. 18. The method of claim 6, 7, 8, 9, 13, and 16.
The stencil printing plate manufacturing apparatus according to any one of the above, further comprising heating means for heating the stencil printing plate to which the sealing portion has been transferred. 19. The image forming apparatus according to claim 12, further comprising heating means for heating the stencil printing plate to which the sealing portion has been transferred. . 20. The method according to claim 10, 11, 14, 15, or 1.
8. The image forming method according to claim 7, wherein the stencil printing plate to which the sealing portion has been transferred is heated. 21. The image forming apparatus according to claim 20, wherein the heating means for heating the stencil printing plate to which the sealing portion has been transferred also serves as a transfer means for transferring the sealing member from the intermediate transfer member to the stencil printing plate. An image forming apparatus comprising: 22. An image forming apparatus according to claim 19, wherein a plurality of image forming apparatuses are connected to a conveyed printing paper so that multicolor printing is possible. .