JP2016203506A - Tower type printer and off-set rotary press - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tower type printer and an off-set rotary press which can prevent mismatch between printing image lines of preceding printing and succeeding printing even in a case where fan-out amounts of respective pages in the width direction of a continuous sheet are different from each other.SOLUTION: In a tower type printer 1 which has such a configuration that a plurality of printing units P-Pare arranged along a travel direction of a continuous sheet W and overprinting is performed on the continuous sheet W by the plurality of printing units P-P, an upstream side width adjustment device 20 capable of adjusting the partial width of the continuous sheet W by pressing a portion in the width direction of the continuous sheet W to make the portion of the continuous sheet W wavy is provided on the upstream side of the printing unit Parranged on the uppermost stream side in the travel direction of the continuous sheet W.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a tower-type printing apparatus and a rotary offset printing press provided with a width adjusting device for adjusting the width of continuous paper.

Conventionally, as an offset rotary printing press, for example, as shown in FIG. 6, a tower-type printing apparatus TP in which a plurality of printing units P _{1 to} P ₄ capable of printing different colors are arranged in the vertical direction (vertical direction). There is a known one (Patent Document 1). In the tower type printing apparatus TP, each of the printing units P _{1 to} P ₄ is mounted with an ink supply apparatus 102 having a large number of ink supply rollers, a dampening water supply apparatus 104 for supplying dampening water, and a printing plate. A plate cylinder 106 and a blanket cylinder 108 on which a blanket is mounted. The printing plates used in each of these printing units P _{1 to} P ₄ are provided with an oleophilic printed image line portion and a hydrophilic non-image line portion. When ink is supplied from the ink supply device 102 in a state where the fountain solution is supplied from the water supply device 104, the ink is applied only to the oleophilic print image line portion. The printing units P _{1 to} P ₄ are supplied with the ink supplied from the ink supply device 102 to the blanket cylinder 108 via the plate cylinder 106, and the continuous paper (printed body) W on which the blanket cylinder 108 travels. By contacting with a predetermined pressure, the contents of the printing plate (characters, images, etc.) are transferred onto the continuous paper W, that is, offset printing (lithographic printing) is performed on the continuous paper W. .

Since the conventional printing units P _{1 to} P ₄ perform printing using the fountain solution as described above, the pulp fiber of the continuous paper W absorbs the fountain solution and expands. There is a problem that a phenomenon (fan out) in which the paper W expands (extends) in the width direction occurs. Such a fan-out causes printing defects such as misalignment between a print image line printed by a lower (upstream) printing unit and a print image line printed by an upper (downstream) printing unit. May cause.

Therefore, in the conventional tower type printing apparatus TP, as shown in FIG. 6, between each of the printing units P _{1 to} P ₄ , that is, between the lowermost printing unit P ₁ and the second printing unit P _2. , between the second stage of the printing unit P ₂ and the third stage of the printing unit P _3, and, during the third stage of the printing unit P ₃ and the top printing unit P _4, respectively, the paper web W A width adjusting device 100 for adjusting the length in the width direction is arranged. The width adjusting device 100 generates undulations in the continuous paper W by pressing a plurality of pressing members arranged in a staggered manner across the continuous paper W across the entire width direction of the continuous paper W. Then, before the print image line of the continuous paper W printed in the previous stage reaches the next-stage printing unit, the width in the width direction of the continuous paper W expanded in the width direction by the fan-out is the original length in the width direction. It is configured to be corrected.

JP 2004-35179 A

  By the way, when a newspaper is printed by the tower type printing apparatus TP as shown in FIG. 6, the printing surface (A surface to D surface) for four pages is provided on both sides of the continuous paper W as shown in FIG. It is normal to print in the direction, and different contents (characters, images, etc.) are usually printed on these A side to D side. In the following description, in order to facilitate the description, the printing surface for four pages on one side (front surface) of the continuous paper W and the printing for four pages on the other surface (back surface) of the continuous paper W are described. Although they are referred to as A-side to D-side without distinguishing them from each other, in reality, they are designated as A-side to D-side on one side of continuous paper W and A-side to D-side on the other side of continuous paper W. Different contents are printed.

  When different contents (characters, images, etc.) are printed on the A-side to D-side in this way, the ratio of the areas of the printed image area and the non-image area on each surface of the A-area to D-area is as follows. Since they are different from each other, the amount of dampening water applied to the continuous paper W via the non-image area of the printing plate is different on each surface of the continuous paper W, so that the fan-out amount on each surface is different. For this reason, for example, on one page (for example, the C surface), when a print content having a larger image area than other pages (for example, the A surface, the B surface, and the D surface), for example, a large pattern such as a full-page advertisement is printed. Since the amount of dampening water in the C surface portion is smaller than the amount of dampening water in the A surface, B surface and D surface portions, the fanout amount in the C surface portion is also the A surface, B surface and D. It will be less than the fan-out amount of the surface part.

  Therefore, in the conventional tower-type printing apparatus TP, using the conventional width adjusting apparatus that presses the pressing member uniformly over the entire width direction of the continuous paper W, the preprinting of the A side, the B side, and the D side is performed. If the pressing amount of the pressing member is adjusted to prevent inconsistencies in the print lines of the post-printing, the pre-printed pattern on the C surface will be shrunk in the width direction beyond the fan-out amount. However, there is a problem that the preprinted pattern is smaller. For this reason, the conventional tower type printing apparatus TP still has a problem that a printing defect such as a positional deviation may occur between the preprinted print image line and the postprinted print image line.

  The present invention has been made in view of the above-described problems of the prior art, and its purpose is to print a pre-printed image and a post-printed image even when the fan-out amount of each page in the width direction of the continuous paper is different. An object of the present invention is to provide a tower type printing apparatus and an offset rotary printing press capable of preventing line mismatch.

  A tower type printing apparatus according to the present invention is a tower type printing apparatus in which a plurality of printing units are arranged along a running direction of continuous paper, and the plurality of printing units are configured to perform overprinting on the continuous paper. Then, by pressing a part of the continuous paper in the width direction on the upstream side of the printing unit disposed on the most upstream side in the running direction of the continuous paper, the continuous paper is made wavy. An upstream-side width adjusting device capable of adjusting a part of the width is provided.

  In the tower type printing apparatus according to the present invention, the upstream side width adjusting device includes a support shaft that is orthogonal to the running direction of the continuous paper and parallel to the paper surface of the continuous paper, and a predetermined interval on the support shaft. The plurality of pressing members are preferably attached to a part of the support shaft in the axial direction so as to press a part of the continuous paper in the width direction. .

  In such a tower type printing apparatus, the upstream side width adjusting device further includes a sleeve member attached to the support shaft so as to be movable along the axial direction, and the sleeve member is arranged in the width direction of the continuous paper. The plurality of pressing members may have a length in the axial direction shorter than the length, and the plurality of pressing members may be mounted on the support shaft via the sleeve members.

  An offset rotary printing press according to the present invention includes the tower-type printing apparatus described above.

  According to the present invention, even when the fan-out amount of each page in the width direction of the continuous paper is different, the tower type printing apparatus and the offset rotary press capable of preventing the mismatch between the print lines of the preprint and the postprint. A printing machine can be provided.

1 is a diagram illustrating a schematic configuration of a tower type printing apparatus according to a first embodiment of the present invention. It is a figure which shows schematic structure of the width adjustment apparatus between printing units which concerns on 1st Embodiment. It is a figure which shows schematic structure of the upstream width adjustment apparatus which concerns on 1st Embodiment. It is a figure which shows schematic structure of the upstream width adjustment apparatus which concerns on 2nd Embodiment. It is a figure which shows schematic structure of the upstream width adjustment apparatus which concerns on 3rd Embodiment. It is a figure which shows schematic structure of the conventional tower type printing apparatus. It is a figure which shows the example of the printing surface printed in a line in the width direction on continuous paper.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments for carrying out the invention will be described with reference to the drawings. The following embodiments do not limit the invention according to each claim, and all combinations of features described in the embodiments are not necessarily essential to the solution means of the invention. .

  First, an offset rotary printing press according to a first embodiment of the present invention will be described with reference to FIGS. The rotary offset printing press according to the first embodiment includes one or a plurality of continuous paper supply units (not shown) for setting a roll paper obtained by winding a continuous paper (substrate) W into a roll, and a continuous paper supply unit. One or a plurality of tower-type printing apparatuses 1 for performing offset four-color printing on both sides of the continuous paper supplied from the printer, and cutting the continuous paper after the offset printing to form individual sheet-like sheets, A folding machine (not shown) that folds a sheet-like sheet or a group of sheet-like sheets made up of a plurality of sheet-like sheets to form a signature, and a predetermined process such as further folding the signature formed by the folding machine into two. And a post-processing mechanism (not shown) for performing integration and one or a plurality of control units (not shown) for executing various controls of each component. In the offset rotary printing press according to the first embodiment, various types of known continuous paper supply units, folding machines, post-processing mechanisms, and control units can be arbitrarily used, and descriptions thereof are omitted.

As shown in FIG. 1, the tower type printing apparatus 1 includes a plurality of (four in the first embodiment) printing units P _{1 to} P ₄ arranged in the vertical direction (the traveling direction of the continuous paper W), A plurality (three in the first embodiment) of inter-print unit width adjusting devices 10A to 10C arranged between the printing units P _{1 to} P ₄ and the lowermost stage (the most upstream side in the running direction of the continuous paper W) It has arranged upstream of arranged printing units P ₁ and the upstream side width adjusting device 20. This tower type printing apparatus 1 is a printing unit P _{1 to} P that can print different colors (cyan, magenta, yellow, black in the first embodiment) on the continuous paper W traveling from below to above. ₄ by overprinting by performing, (in the first embodiment sided four-color printing) duplex color printing on continuous paper W are configured to perform.

As shown in FIG. 1, the printing units P _{1 to} P ₄ are each equipped with an ink supply device 2 having a large number of ink supply rollers, a dampening water supply device 4 for supplying dampening water, and a printing plate. A pair of a printing cylinder 6 and a blanket cylinder 8 to which a blanket is attached are provided with a continuous paper W interposed therebetween. Note that, in the tower type printing apparatus 1 according to the first embodiment, as the ink supply device 2, the dampening water supply device 4, the plate cylinder 6 and the blanket cylinder 8, various known ones can be used arbitrarily. The description is omitted.

Between the printing unit P ₂ of the printing unit P ₁ of the lowest stage and the second stage, between the second-stage printing unit P ₂ and the third-stage printing unit P _3, and, the third-stage printing unit P _As shown in FIG. 1, undulation is generated across the entire width direction of the continuous paper W between the uppermost printing unit P ₄ and the length of the continuous paper W in the width direction, as shown in FIG. The inter-print unit width adjusting devices 10A to 10C configured as described above are arranged.

  As shown in FIG. 2, the inter-print unit width adjusting devices 10 </ b> A to 10 </ b> C include a surface side corrugation forming unit 12 a disposed on one surface (front surface) side of the continuous paper W and the other surface (back surface) of the continuous paper W. ) Side-side corrugation forming means 12b disposed on the side), and the front-side corrugation formation means 12a and the back-side corrugation formation means 12b are configured to generate undulation over the entire width direction of the continuous paper W. Has been.

  As shown in FIG. 2, the surface-side corrugation forming means 12a has a support shaft 14a provided perpendicular to the running direction of the continuous paper W and parallel to the paper surface of the continuous paper W, and a predetermined interval on the support shaft 14a. A plurality of (eight in the first embodiment) pressing members 16a and drive means (not shown) capable of moving the support shaft 14a toward or away from the paper surface of the continuous paper W. ing. Similarly to the front side wavy forming means 12a, the back surface side wavy forming means 12b has a support shaft 14b provided perpendicular to the running direction of the continuous paper W and parallel to the paper surface of the continuous paper W, and on the support shaft 14b. A plurality of (eight in the first embodiment) pressing members 16b attached at a predetermined interval and driving means (not shown) capable of moving the support shaft 14b closer to or away from the paper surface of the continuous paper W. )). Note that the driving means of the front side wavy forming means 12a and the back side wavy forming means 12b are supported by rotating eccentric cams provided at both ends of the support shafts 14a and 14b by a hydraulic cylinder, a drive motor, or the like. Since various known configurations such as a configuration in which the shafts 14a and 14b are moved closer to or away from the surface of the continuous paper W can be employed, the description thereof is omitted.

  As shown in FIG. 2, the support shafts 14 a and 14 b are long cylindrical members that are spanned between a pair of frames F and F, respectively, and approach the paper surface of the continuous paper W by the driving means. It is configured to be separable.

  The pressing members 16a and 16b are roller-shaped members that are rotatably attached to the support shafts 14a and 14b via bearings (not shown), respectively, along the axial direction of the support shafts 14a and 14b. The mounting position can be adjusted. The pressing member 16a of the front side wavy forming means 12a and the pressing member 16b of the back side wavy forming means 12b are respectively printed on the entire width direction of the continuous paper W, that is, the continuous paper W, as shown in FIG. The positions in the axial direction (the width direction of the continuous paper W) are shifted so that the continuous paper W is sandwiched over all the areas A to D of each printing surface.

According to the above-described inter-print unit width adjusting devices 10A to 10C, as shown in FIG. 2, the plurality of pressing members 16a and 16b arranged in a zigzag manner with the continuous paper W interposed therebetween are arranged in the width of the continuous paper W By pressing over the entire direction, undulation is generated over the entire width direction of the continuous paper W, and thereby the length of the continuous paper W in the width direction can be reduced. Further, the inter-print unit width adjusting devices 10A to 10C continuously move the support shafts 14a and 14b closer to or away from the surface of the continuous paper W by driving means and adjust the pressing amount by the pressing members 16a and 16b. It is possible to arbitrarily adjust the reduction amount of the length of the paper W in the width direction. Then, according to the inter-print unit width adjusting devices 10A to 10C, the length of the continuous paper W in the width direction is arbitrarily reduced in this way, so that the next printing unit (P _{2 to} P ₄ ) is printed in the previous stage. Before the printed image line of the continuous paper W arrives, it is possible to correct the length in the width direction of the continuous paper W extended in the width direction by fan-out to the original length in the width direction.

  As shown in FIG. 3, the upstream side width adjusting device 20 includes a surface-side partial undulation forming unit 22 a disposed on one surface (front surface) side of the continuous paper W and the other surface (back surface) of the continuous paper W. Back surface side partial undulation forming means 22b disposed on the side, and these surface side partial undulation forming means 22a and back surface side partial undulation formation means 22b are locally provided in part in the width direction of the continuous paper W. It is configured to generate typical undulations.

  As shown in FIG. 3, the surface-side partial undulation forming means 22a includes a support shaft 24a that is orthogonal to the running direction of the continuous paper W and parallel to the paper surface of the continuous paper W, and an axial direction on the support shaft 24a. A sleeve member 25a movably attached along the sleeve, a plurality of (two in the first embodiment) pressing members 26a attached at predetermined intervals on the sleeve member 25a, and a range of movement of the sleeve member 25a. A pair of stopper members 27a and 28a for defining and a driving means (not shown) capable of moving the support shaft 24a closer to or away from the paper surface of the continuous paper W are provided. Moreover, the back surface side partial undulation forming means 22b is movable along the axial direction on the support shaft 24b provided on the support shaft 24b and perpendicularly to the running direction of the continuous paper W and parallel to the paper surface of the continuous paper W. A pair of sleeve members 25b attached, a plurality of (three in the first embodiment) pressing members 26b attached at predetermined intervals on the sleeve member 25b, and a pair for defining the movement range of the sleeve member 25b Stopper members 27b and 28b, and drive means (not shown) capable of moving the support shaft 24b closer to or away from the surface of the continuous paper W. The driving means of the front surface side partial wave forming means 22a and the back surface side partial wave forming means 22b is, for example, rotating eccentric cams provided at both ends of the support shafts 24a, 24b by a hydraulic cylinder, a drive motor or the like. By doing so, various known configurations such as a configuration in which the support shafts 24a and 24b are moved closer to or away from the paper surface of the continuous paper W can be adopted, and the description thereof is omitted.

  As shown in FIG. 3, the support shafts 24 a and 24 b are long cylindrical members that are spanned between a pair of frames F and F, respectively, and are moved toward or away from the paper surface of the continuous paper W by a driving unit. It is configured to be separable.

  The sleeve members 25a and 25b are cylindrical members provided on the support shafts 24a and 24b so as to be coaxial with the support shafts 24a and 24b, respectively, are movable along the axial direction of the support shafts 24a and 24b, and The support shafts 24a and 24b can be fixed at any position in the axial direction (in the first embodiment, any position between the pair of stopper members 27a, 28a, 27b, and 28b) by appropriate fixing means. The sleeve members 25a and 25b have a length in the axial direction that is shorter than the length in the width direction of the continuous paper W. In the first embodiment, the sleeve members 25a and 25b correspond to one page of the printing surface for four pages printed on the continuous paper W. The length in the axial direction corresponding to the print surface, specifically, the length in the axial direction is substantially the same as or slightly longer than the length in the width direction of the print surface for one page.

  The pressing members 26a and 26b are roller-shaped members that are rotatably attached to the sleeve members 25a and 25b via bearings (not shown), respectively, along the axial direction of the sleeve members 25a and 25b. The mounting position can be adjusted. As shown in FIG. 3, the pressing member 26a of the front surface side partial undulation forming unit 22a and the pressing member 26b of the back surface side partial undulation forming unit 22b are respectively provided on the printing surface of four pages printed on the continuous paper W. In the area of the printing surface for one page (area C in the illustrated example), the position in the axial direction (width direction of the continuous paper W) is shifted so that the continuous paper W is arranged in a staggered manner. Is provided.

  The pair of stopper members 27a, 28a, 27b, 28b are fixed on the support shafts 24a, 24b at a predetermined interval in the axial direction of the support shafts 24a, 24b, and the pair of stopper members 27a, 28a, 27b. 28b, the sleeve members 25a and 25b are allowed to move. In the first embodiment, the pair of stopper members 27 a, 28 a, 27 b, and 28 b are within the regions B and C of the printing surface for two pages where the sleeve members 25 a and 25 b are located at the center in the width direction of the continuous paper W. Are arranged apart from each other so as to be movable only at.

  According to the upstream side width adjusting apparatus 20 as described above, as shown in FIG. 3, a plurality of pressing members 26 a and 26 b arranged in a zigzag manner across the continuous paper W are arranged in the width direction of the continuous paper W. Part of the continuous paper W in the width direction is generated by being pressed against a portion (printing surface for one page in the first embodiment), thereby reducing the width of a part of the continuous paper W. It is possible to shorten. Further, the upstream side width adjusting device 20 moves the support shafts 24a and 24b closer to or away from the paper surface of the continuous paper W by driving means, and adjusts the pressing amount by the pressing members 26a and 26b. It is possible to arbitrarily adjust the reduction amount of the length in the width direction.

Or as described, offset rotary printing machine having tower printing apparatus 1 and the same according to the first embodiment, the most upstream arranged printing units P ₁ toward the upstream side in the running direction of the continuous paper W, continuous There is provided an upstream side width adjusting device 20 capable of adjusting the width of a part of the continuous paper W by pressing a part of the paper W in the width direction to make a part of the continuous paper W corrugated. Yes.

According to the tower-type printing apparatus 1 according to the first embodiment configured as described above and the offset rotary printing press provided with the same, for example, one page (for example, C surface) and another page (for example, A surface, B) Even if a large pattern such as a full-page advertisement having a larger image area than the surface A and the surface D is printed and the fanout amount of the C surface is different from the fanout amounts of the A surface, the B surface, and the D surface, Before the continuous paper W enters the printing unit P ₁ on the most upstream side, the upstream side width adjusting device takes into account the difference between the fan-out amount on the C side and the fan-out amounts on the A side, B side and D side. By preliminarily reducing the width of only the C surface by 20, not only the A surface, the B surface and the D surface but also the preprinted image and the postprinted image on the C surface portion can be accurately superimposed. It becomes possible.

That is, as described above, in the conventional tower type printing apparatus TP shown in FIG. 6, the C surface with a small fan-out amount is the width adjusting device 100 between the printing units P _{1 to} P ₄ (inter-print unit width adjusting device). As a result, the A, B and D planes with relatively large fan-out amounts are reduced uniformly in the width direction. Even if the image lines are aligned with each other, the preprinted image line of the C surface portion becomes smaller than the postprinted image line, and these image lines in the C surface portion are displaced. On the other hand, in the tower type printing apparatus 1 according to the first embodiment and the offset rotary printing press including the same, the upstream side width adjusting apparatus 20 is provided, so that the C surface portion generated when printing is performed by the conventional method. Before the printing unit P ₁ enters the most upstream printing unit P ₁ by an amount corresponding to the deviation amount between the pre-printing image line and the post-printing image line (that is, before printing is performed in the printing unit P ₁ ). The width of the C surface portion of the continuous paper W can be reduced in advance. Then, by performing printing by the printing unit P ₁ on the most upstream side to the C side portion of a compressed state thus the width and waving after the passage of the printing unit P ₁ is printed on eliminating been C-plane portion streaked, it can be increased by an amount corresponding to the shift amount than streaked when it is printed by the printing unit P ₁ without shortening the width. For this reason, according to the tower type printing apparatus 1 according to the first embodiment and the offset rotary printing press including the same, it is possible to accurately superimpose the pre-printed pattern and the post-printed pattern on the C surface portion. . Further, since the area whose width is reduced by the upstream side width adjusting device 20 is only the C surface portion, the normal fan-out correction by the inter-print unit width adjusting devices 10A to 10C is performed on the A surface, B surface, and D surface portions. Thus, it is possible to accurately overlay the preprinted pattern and the postprinted pattern. In the above description, for ease of explanation, the printing surface for four pages on one side (front surface) of the continuous paper W and the printing for four pages on the other surface (back surface) of the continuous paper W are described. Although they are referred to as the A-side to D-side without distinguishing the sides, in practice, the A-side to D-side of one side of the continuous paper W and the A-side to D-side of the other side of the continuous paper W Different contents are printed.

  Further, the tower type printing apparatus 1 and the offset rotary printing press including the tower type printing apparatus 1 according to the first embodiment can be manufactured only by adding the upstream side width adjusting apparatus 20 to the conventional tower type printing apparatus TP. For this reason, for example, the upstream side width adjusting device 20 is configured to be retrofitted to an existing tower-type printing device, thereby diverting existing equipment and including the tower-type printing device 1 according to the first embodiment. Since an offset rotary printing press can be manufactured, the conventional problem can be solved at a minimum cost.

  The preferred embodiment of the present invention has been described above, but the technical scope of the present invention is not limited to the scope described in the above-described embodiment. Various modifications or improvements can be added to the above embodiments.

For example, in the description of the first embodiment described above, the tower type printing apparatus 1 has been described as a printing apparatus that can print on both sides and four colors including _four printing units P _{1 to} P _4. However, the present invention is not limited to this. However, as long as the printing apparatus performs overprinting with two or more printing units, various printing apparatuses such as a tower type printing apparatus including a two-stage printing unit may be used. When a plurality of tower-type printing apparatuses 1 are installed, a tower-type printing apparatus having a four-stage printing unit and a tower-type printing apparatus having a two-stage printing unit may be mixed.

  In the description of the first embodiment described above, the inter-print unit width adjusting devices 10A to 10C have been described as including the front side wavy forming means 12a and the back side wavy forming means 12b, but the present invention is not limited thereto. It is good also as a structure provided only with one of the surface side wavy formation means 12a and the back surface side wavy formation means 12b. Further, the front surface side corrugation forming means 12a and the back surface side corrugation forming means 12b include support shafts 14a and 14b, pressing members 16a and 16b, and drive means, respectively, and the support shafts 14a and 14b are driven by the drive means on the surface of the continuous paper W. However, the present invention is not limited to this, and various known undulation forming means can be employed.

  Furthermore, in the description of the first embodiment described above, the upstream side width adjusting device 20 has been described as including the front surface side partial wavy forming means 22a and the back surface side partial wavy forming means 22b, but the present invention is not limited thereto. Further, only one of the front surface side partial wave forming means 22a and the back surface side partial wave forming means 22b may be provided.

  Furthermore, in the description of the first embodiment described above, the sleeve members 25a and 25b of the upstream side width adjusting device 20 have axial lengths substantially the same as or slightly longer than the length in the width direction of the printing surface for one page. Although described as having a length, the present invention is not limited to this, and may have a length in the axial direction that can correspond to a printing surface for two pages or a printing surface for three pages. In this case, the pressing members 26a and 26b attached to the sleeve members 25a and 25b cover substantially the entire area of the sleeve members 25a and 25b, that is, an area that can correspond to the printing surface for two pages or the printing surface for three pages. A plurality will be provided. In the above description of the first embodiment, the upstream side width adjusting device 20 has been described as including a pair of stopper members 27a, 28a, 27b, and 28b for defining the movement range of the sleeve members 25a and 25b. However, the present invention is not limited to this, and the sleeve members 25a and 25b can be moved over the entire area A to D in the width direction of the continuous paper W without providing the pair of stopper members 27a, 28a, 27b, and 28b. good.

  In the above description of the first embodiment, the front side partial undulation forming means 22a and the back side partial undulation forming means 22b of the upstream side width adjusting device 20 include the support shafts 24a and 24b and the support shafts 24a and 24b. A sleeve member 25a, 25b attached to the sleeve member 25a, a pressing member 26a, 26b attached to the sleeve member 25a, 25b, a pair of stopper members 27a, 28a, 27b, 28b, and support shafts 24a, 24b. Although it has been described that the driving means (not shown) that moves toward or away from the paper surface of the continuous paper W is provided, the present invention is not limited to this. The upstream side width adjusting device 20 is configured to be able to adjust the width of a part of the continuous paper W by pressing a part of the continuous paper W in the width direction to make a part of the continuous paper W corrugated. Various configurations can be adopted as long as they are used. For example, instead of the configuration in which the plurality of pressing members 26a, 26b are attached to the sleeve members 25a, 25b, the pressing members 26a, 26b may be attached to the support shafts 24a, 24b via bearings, or the pressing members 26a, 26b. It is good also as a structure which attaches each pressing member 26a, 26b to support shaft 24a, 24b via support members, such as a bracket provided for every. Hereinafter, other suitable examples (second embodiment and third embodiment) of the upstream side width adjusting device will be described exemplarily.

  First, the upstream side width adjusting apparatus 20 ′ according to the second embodiment will be described with reference to FIG. As shown in FIG. 4, the upstream side width adjusting device 20 ′ according to the second embodiment includes a surface side partial undulation forming unit 22 a ′ disposed on one surface (front surface) side of the continuous paper W, and a continuous paper. Back surface side partial undulation forming means 22b 'disposed on the other surface (back surface) side of W, by these surface side partial undulation forming means 22a' and back surface side partial undulation formation means 22b ', It is configured to generate local undulations in a part of the continuous paper W in the width direction.

  As shown in FIG. 4, the surface side partial undulation forming means 22 a ′ is provided on a support shaft 24 a ′ orthogonal to the running direction of the continuous paper W and parallel to the paper surface of the continuous paper W, and on the support shaft 24 a ′. A plurality (four in the second embodiment) of brackets 25a ′ attached at predetermined intervals, a short shaft (not shown) provided at the upper end of each bracket 25a ′, and a bearing on each short shaft And a pressing member 26 a ′ that is rotatably mounted via the. Similarly, the back surface side partial undulation forming means 22b ′ includes a support shaft 24b ′ that is orthogonal to the running direction of the continuous paper W and parallel to the paper surface of the continuous paper W, and a predetermined axis on the support shaft 24b ′. A plurality (four in the second embodiment) of brackets 25b 'attached at intervals, a short shaft (not shown) provided at the upper end of each bracket 25b', and a bearing on each short shaft And a pressing member 26b 'attached rotatably.

  As shown in FIG. 4, the brackets 25 a ′ and 25 b ′ are configured such that their lower ends can be attached to the support shafts 24 a ′ and 24 b ′, and a short shaft extending in parallel with the support shafts 24 a ′ and 24 b ′ is provided at the upper ends. It is the plate-shaped member made. Each bracket 25a ', 25b' is configured such that its mounting position can be adjusted along the axial direction of the support shafts 24a ', 24b' and the mounting angle with respect to the support shafts 24a ', 24b' can be adjusted. Has been. The brackets 25a 'of the front surface side partial undulation forming means 22a' and the brackets 25b 'of the back surface side partial undulation forming means 22b' are printed areas A to D of four pages printed on the continuous paper W, respectively. Among them, in the areas B and C of the printing surface for two pages at the center, the positions in the axial direction (width direction of the continuous paper W) are shifted so as to be arranged in a staggered manner across the continuous paper W. . Further, the pressing members 26a 'and 26b' are respectively attached to the brackets 25a 'and 25b' arranged in a staggered manner in this manner, so that the pressing member 26a 'and the back surface side portion of the front surface side partial wave forming means 22a' The pressing member 26b 'of the target undulation forming means 22b' is also arranged in a staggered manner with the continuous paper W sandwiched in the areas B and C of the printing surface for the two pages at the center.

  The surface side partial undulation forming means 22a ′ and the back side partial undulation forming means 22b ′ of the upstream width adjusting device 20 ′ according to the second embodiment are similar to the upstream width adjusting device 20 according to the first embodiment. The pressing amounts by the plurality of pressing members 26a ′ and 26b ′ may be adjusted simultaneously by moving the support shafts 24a ′ and 24b ′ closer to or away from the paper surface of the continuous paper W by the driving means. . Further, the front surface side partial wave forming means 22a ′ and the back surface side partial wave forming means 22b ′ are pressed by manually adjusting the mounting angles of the brackets 25a ′ and 25b ′ with respect to the support shafts 24a ′ and 24b ′. The pressing amount by the members 26a ′ and 26b ′ may be adjusted in units of the pressing members 26a ′ and 26b ′.

  In the above description of the second embodiment, the pressing members 26a 'and 26b' are arranged only in the areas B and C on the printing surface for the two pages at the center of the continuous paper W, that is, the pressing member 26a '. , 26b ', the configuration in which the areas B and C of the printing surface for the center two pages of the continuous paper W are pressed is described as an example, but is not limited thereto. The area of the continuous paper W pressed by the pressing members 26a ′ and 26b ′ can be changed as appropriate by adjusting the positions and the number of brackets 25a ′ and 25b ′ in the axial direction of the support shafts 24a ′ and 24b ′. Is possible.

  Next, the upstream side width adjusting apparatus 20 ″ according to the third embodiment will be described with reference to FIG. The upstream side width adjusting device 20 ″ according to the third embodiment is similar to the upstream side width adjusting device 20 ′ according to the second embodiment in that the front side partial wave forming means 22a ″ and the back side partial wave forming are formed. Means 22 b ″, and these front surface side partial undulation forming means 22 a ″ and back surface side partial undulation forming means 22 b ″ include support shafts 24 a ″, 24 b ″ and brackets 25 a ″, 25 b. ″, A short shaft (not shown), and pressing members 26 a ″ and 26 b ″.

  Unlike the upstream width adjusting device 20 ′ according to the second embodiment, the upstream width adjusting device 20 ″ according to the third embodiment is rotatably supported by the brackets 25 a ″ and 25 b ″. ing. The short shaft is composed of a first shaft rotatably supported by the brackets 25a ″ and 25b ″ and a second shaft to which the pressing members 26a ″ and 26b ″ are rotatably mounted. The shaft and the second shaft have an eccentric structure in which the central shaft is shifted from each other and are integrally coupled. Further, the upstream width adjusting device 20 ″ according to the third embodiment is different from the upstream width adjusting device 20 ′ according to the second embodiment in that driving means 27a and 27b for rotating the short axis are provided with brackets 25a ′. ′, 25b ″. The driving means 27a and 27b can adopt various known configurations such as a hydraulic cylinder and a driving motor.

  The front side partial undulation forming unit 22a ″ and the back side partial undulation forming unit 22b ″ of the upstream side width adjustment device 20 ″ according to the third embodiment are the same as the upstream side width adjustment device 20 according to the first embodiment. In the same manner as described above, the pressing amount by the plurality of pressing members 26a '' and 26b '' is adjusted at once by moving the support shafts 24a '' and 24b '' closer to or away from the surface of the continuous paper W by the driving means. It may be configured to. Further, the front side partial wavy forming means 22a ″ and the back side partial wavy forming means 22b ″ manually adjust the mounting angles of the brackets 25a ″ and 25b ″ with respect to the support shafts 24a ″ and 24b ″, respectively. The pressing members 26 a ′ and 26 b ′ are adjusted by adjusting or rotating the short axis by the driving means 27 a and 27 b and moving the pressing members 26 a ″ and 26 b ″ closer to or away from the paper surface of the continuous paper W. The pressing amount may be adjusted in units of the pressing members 26a ′ and 26b ′.

  The upstream width adjusting devices 20 ′ and 20 ″ according to the second and third embodiments having the above-described configuration are similar to the upstream width adjusting device 20 according to the first embodiment in the width direction of the continuous paper W. It is possible to adjust the width of a part of the continuous paper W by pressing a part to make a part of the continuous paper W wavy. For this reason, the tower type printing apparatus 1 according to the first embodiment described above is also used by the tower type printing apparatus and the offset rotary printing press provided with the upstream side width adjusting apparatuses 20 ′ and 20 ″ according to the second and third embodiments. In addition, it is possible to achieve the same function and effect as that of an offset rotary printing press.

DESCRIPTION OF SYMBOLS 1 Tower type printing apparatus, 2 Ink supply apparatus, 4 Dampening water supply apparatus, 6 Plate cylinder, 8 Blanket cylinder, 10A-10C Width adjustment apparatus between printing units, 12a Surface side corrugation formation means, 12b Back surface side corrugation formation means, 14a, 14b Support shaft, 16a, 16b Pressing member, 20, 20 ′, 20 ″ Upstream width adjusting device, 22a, 22a ′, 22a ″ Surface side partial wave forming means, 22b, 22b ′, 22b ″ Back surface side partial corrugation forming means, 24a, 24b, 24a ′, 24b ′, 24a ″, 24b ″ Support shaft, 25a, 25b Sleeve member, 25a ′, 25b ′, 25a ″, 25b ″ Bracket, 26a , 26b, 26a ′, 26b ′, 26a ″, 26b ″, pressing member, 27a, 27b driving means, 27a, 27b, 28a, 28b stopper member, F _Over-time, P 1 ~P ₄ printing unit, W continuous paper

Claims (4)

A tower type printing apparatus in which a plurality of printing units are arranged along the running direction of continuous paper, and configured to perform overprinting on continuous paper by the plurality of printing units,
By pressing a part of the continuous paper in the width direction to the upstream side of the printing unit arranged on the most upstream side in the running direction of the continuous paper, a part of the continuous paper is made wavy. A tower-type printing apparatus, characterized in that an upstream-side width adjustment device capable of adjusting the width of the section is provided. The tower type printing apparatus according to claim 1,
The upstream side width adjusting device includes a support shaft that is orthogonal to the running direction of the continuous paper and parallel to the paper surface of the continuous paper, and a plurality of pressing members that are attached to the support shaft at predetermined intervals. Prepared,
The tower-type printing apparatus, wherein the plurality of pressing members are attached to a part of the support shaft in the axial direction so as to press a part of the continuous paper in the width direction. The tower type printing apparatus according to claim 2,
The upstream width adjusting device further includes a sleeve member attached to the support shaft so as to be movable along the axial direction,
The sleeve member has a length in the axial direction shorter than the length in the width direction of the continuous paper,
The plurality of pressing members are mounted on the support shaft via the sleeve member. An offset rotary printing press comprising the tower type printing apparatus according to any one of claims 1 to 3.

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