JP5674324B2 - Sleeve printing plate manufacturing method and sleeve printing plate manufacturing apparatus - Google Patents

Description

  The present invention provides a sleeve printing comprising: an image pattern that is used by being mounted on a cylinder of a printing apparatus and is printed on a substrate; and a positioning notch that is engaged with a guide pin standing on the cylinder. The present invention relates to a plate manufacturing method and a sleeve printing plate manufacturing apparatus.

The sleeve printing plate described above is widely used in the fields of flexographic printing and letterpress printing, as described in, for example, Patent Document 1. Further, as described in Patent Document 2, a sleeve printing plate is also applied in the field of offset printing for cylindrical objects such as cans.
In this sleeve printing plate, since the circumferential position of the image pattern is preset on the sleeve support, the image pattern can be registered by aligning the sleeve support and the cylinder. It is possible to greatly reduce the time and labor required for the pattern exchange work.

Here, in the above-described sleeve printing plate, a positioning notch that opens toward the end in the axial direction is provided in a part of the sleeve support, and this positioning notch is erected on the cylinder. By engaging with the guide pins, the relative position in the circumferential direction and the relative position in the axial direction between the sleeve printing plate and the cylinder are determined.
Such a conventional sleeve printing plate is usually made of a fiber reinforced plastic (FRP) sleeve support and a photosensitive resin which is disposed on the outer peripheral surface of the sleeve support and can be engraved with laser light, for example. And a plate body on which an image pattern is formed. Here, the thickness of the sleeve support is about 1 mm, and is configured to maintain a cylindrical shape.

  Such a sleeve printing plate is manufactured as follows. First, a fiber reinforced plastic (FRP) sleeve support is produced by repeatedly wrapping reinforcing fibers around a fixed base having a cylindrical surface, and applying and curing a molten plastic resin. Next, a sleeve material is produced by disposing a plate material on the entire outer peripheral surface of the sleeve support. A positioning notch is formed by machining at the axial end of the sleeve element. Then, an image pattern is formed on the outer peripheral surface of the plate material by using a laser processing machine, an exposure device, or the like with reference to the notch.

JP 2006-326938 A JP 2006-272682 A

  By the way, in the above-described method for manufacturing a sleeve printing plate, after the positioning notch is formed by mechanical processing, an image pattern is formed using another processing apparatus with the positioning notch as a reference. Therefore, depending on the positioning accuracy in forming the image pattern, the relative position between the image pattern and the positioning notch may be out of order, and high-quality printing may not be performed. Therefore, it is necessary to perform alignment accurately for each sleeve printing plate, and even though the sleeve printing plate is used with much effort, it becomes impossible to reduce the time and labor required for the image pattern exchange work. Become.

  The present invention has been made in view of the above-described circumstances, and is a method for manufacturing a sleeve printing plate capable of accurately forming a positioning notch and an image pattern so that their relative positions coincide with each other. And an apparatus for manufacturing a sleeve printing plate.

In order to solve the above-mentioned problems, a method for manufacturing a sleeve printing plate according to the present invention is used by being mounted on a cylinder of a printing apparatus, and an image pattern to be printed on a printing material, and a guide standing on the cylinder. A method for manufacturing a sleeve printing plate comprising a positioning notch to be engaged with a pin, a positioning notch forming step for forming the positioning notch in a sleeve body having a cylindrical shape, and the sleeve An image pattern forming process for forming the image pattern on the element body, and the sleeve element body is a long sleeve element body capable of producing a plurality of the sleeve printing plates, and the sleeve element body has a predetermined axial length. A sleeve drum body support portion having a rotating drum on which the sleeve element body can be mounted on an outer peripheral surface, and a shaft support portion that rotatably supports the rotating drum. A laser beam machine that irradiates a laser beam to the sleeve element mounted on the rotary drum, and using the laser processing machine, the cutting step, the positioning notch forming step, and the image pattern The forming step is performed in a state where the sleeve element body is mounted on the same sleeve element support portion. In the cutting step and the positioning notch forming step, the cutting position and shape, and the positioning notch By controlling the operation of the rotating drum and the laser irradiation unit based on the first image data indicating the part forming position and shape, the entire thickness of the sleeve element is removed, and the sleeve element is cut and The positioning notch is formed, and in the image pattern forming step, the rotating dot is formed based on the second image data indicating the position and shape of the image pattern. It is configured to form the image pattern by controlling the operation of arm and the laser irradiation unit, the laser processing machine, an energy density adjustment unit for controlling the energy density of the laser light applied to the sleeve element And the laser beam irradiation unit performs the cutting step, the positioning notch forming step, and the image pattern forming step by scanning the outer peripheral surface of the sleeve body once . .

According to the method for manufacturing a sleeve printing plate having this configuration, the positioning notch portion forming step and the image pattern forming step are performed in a state where the sleeve element body is mounted on the rotating drum of the same sleeve element body support portion. There is no possibility of deviation in the relative position between the positioning notch and the image pattern, and a sleeve printing plate capable of high-quality printing can be manufactured.
Furthermore, since the positioning notch and the image pattern are formed by the laser processing machine, the deformation of the sleeve printing plate can be suppressed by the local application of heat associated with the processing.

Furthermore, the sleeve element is a long sleeve element capable of producing a plurality of the sleeve printing plates, and includes a cutting step of cutting the sleeve element into a predetermined length in the axial direction, the laser processing Since the cutting step, the positioning notch forming step and the image pattern forming step are performed using a machine with the sleeve element mounted on the same sleeve element support , A plurality of sleeve printing plates can be manufactured from a single sleeve element. Therefore, a sleeve printing plate can be manufactured efficiently. In addition, since the cutting step, the positioning notch forming step, and the image pattern forming step are performed in a state of being mounted on the same sleeve element support portion, the axial length of the sleeve printing plate, the positioning notch Therefore, the relative position accuracy with respect to the part and the image pattern is improved.

In addition, since the energy density adjusting unit for controlling the energy density of the laser beam is provided, when forming the positioning notch and cutting the sleeve element, the sleeve element body is set to a relatively high energy density. When the entire thickness direction is removed to form an image pattern, it is possible to remove only a part of the thickness of the sleeve element body by relatively reducing the energy density. Therefore, by scanning the laser beam irradiation portion once, the sleeve element body can be cut, the positioning notch portion and the image pattern can be formed, and the sleeve printing plate can be manufactured more efficiently. Further, it is possible to further improve the accuracy of the relative length between the axial length of the sleeve printing plate and the positioning notch and the image pattern.

Furthermore, it is preferable that the thickness of the sleeve body is 0.1 mm or more and 1.0 mm or less.
In this case, since the thickness of the sleeve body is 0.1 mm or more, rigidity as a sleeve printing plate is ensured, and deformation of the image pattern due to elongation or the like and deformation of the positioning notch can be suppressed. . Also, since the thickness of the sleeve element is 1.0 mm or less, the entire thickness direction of the sleeve element can be reliably removed by laser processing, and the positioning notch can be efficiently formed. Can do.

Moreover, it is preferable that the said laser beam irradiation part is set as the structure which irradiates a carbon dioxide laser.
In this case, since the output of the laser becomes relatively high, the entire thickness direction of the sleeve body can be removed, and the positioning notch can be formed efficiently and reliably.

The sleeve printing plate manufacturing apparatus of the present invention is used by being mounted on a cylinder of a printing apparatus and used for positioning to be engaged with an image pattern to be printed on a printed material and a guide pin standing on the cylinder. An apparatus for manufacturing a sleeve printing plate comprising a notch, a rotating drum to which a cylindrical sleeve element can be mounted, and a sleeve element body supporting part having a shaft support part that rotatably supports the rotating drum; A laser beam irradiating unit that irradiates the sleeve element mounted on the rotating drum with a laser beam, and a control unit that controls operations of the rotating drum and the laser beam irradiating unit. The controller stores a first image data indicating a cutting position and shape, a positioning notch forming position and a shape, and second image data indicating a position and a shape of the image pattern. And an energy density of laser light when forming the positioning notch based on the first image data and an energy density of laser light when forming the image pattern based on the second image data, respectively. An energy density adjusting unit to be adjusted, and the laser beam irradiation unit scans the outer peripheral surface of the sleeve body once to cut, form the positioning notch, and the image pattern. It is characterized by being controlled to form .

  According to the sleeve printing plate manufacturing apparatus having this configuration, the storage device stores the first image data indicating the position and shape of the positioning notch and the second image data indicating the position and shape of the image pattern. Therefore, the positioning notch and the image pattern can be formed based on the first image data and the second image data. Further, the energy density of the laser beam when forming the positioning notch based on the first image data and the energy density of the laser beam when forming the image pattern based on the second image data, Since the energy density adjusting section for adjusting each is provided, the laser processing depth to the sleeve element can be adjusted, and the positioning notch and the image pattern can be suitably formed.

The first image data, since it is intended to indicate a the cutting position and shape and the positioning notches formed position and shape, by irradiating a laser beam based on the first image data, the sleeve body And the formation of the positioning notch can be performed.

  According to the present invention, a sleeve printing plate manufacturing method and a sleeve printing plate manufacturing apparatus capable of forming a positioning notch and an image pattern with high precision so that their relative positions coincide with each other are provided. Can do.

It is a perspective view of the sleeve printing plate manufactured with the manufacturing method and manufacturing apparatus of the sleeve printing plate which are embodiment of this invention. It is the figure which looked at the sleeve printing plate of FIG. 1 from the axial direction. It is the schematic of the manufacturing apparatus of the sleeve printing plate which is this embodiment. It is explanatory drawing which shows the sleeve element | base_body used for the manufacturing method of the sleeve printing plate which is this embodiment, 1st image data, and 2nd image data.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
First, a sleeve printing plate 30 manufactured by the sleeve printing plate manufacturing apparatus 50 and the manufacturing method according to the present embodiment will be described with reference to FIGS. 1 and 2.
As shown in FIGS. 1 and 2, the sleeve printing plate 30 includes a cylindrical sleeve support 31 extending along the axis O, a plate 32 disposed on the outer peripheral side of the sleeve support 31, It has.

  The sleeve support 31 is made of polyethylene terephthalate (PET) resin, the outer diameter D is 100 mm ≦ D ≦ 300 mm, the length L in the direction of the axis O is 50 mm ≦ L ≦ 600 mm, and the outer diameter D and the axis O The ratio L / D with the direction length L is set to 0.2 ≦ L / D ≦ 2. Furthermore, the thickness t of the sleeve support 31 is 0.1 mm ≦ t ≦ 1.0 mm. In the present embodiment, the length of the sleeve support 31 in the axis O direction is 200 mm.

The plate member 32 is made of, for example, a photosensitive resin that can be engraved with laser light, and has a cylindrical shape with a thickness of 0.5 mm to 1.0 mm. A relief plate 33 having an image pattern is engraved on the outer peripheral surface of the plate member 32.
Then, the end of the sleeve printing plate in the direction of the axis O is engaged with a guide pin erected on the cylinder of the printing apparatus to guide the circumferential relative position with respect to the cylinder and the relative position in the axis O direction. A notch 34 is formed.

  Next, a sleeve printing plate manufacturing apparatus 50 according to the present embodiment used when manufacturing the sleeve printing plate 30 described above will be described with reference to FIGS. 3 and 4.

  As shown in FIG. 3, the sleeve printing plate manufacturing apparatus 50 according to the present embodiment has a rotating drum 51 having a cylindrical surface 51A on which a cylindrical sleeve body 40 is mounted, and the rotating drum 51 can be rotated. Laser light is applied to the sleeve base body support portion 53 having the shaft support portion 52 to be supported, the rotation drive portion 55 that rotates the rotary drum 51 around the axis N, and the sleeve base body 40 attached to the rotary drum 51. The laser beam irradiation unit 60 to be irradiated, the linear motion unit 65 that moves the laser beam irradiation unit 60 in a direction parallel to the axis N of the rotary drum 51, the rotary drum 51, the linear motion unit 65, and the laser beam irradiation unit 60. And a control unit 70 for controlling the operation.

Here, the rotating drum 51 has an outer diameter slightly larger than the inner diameter of the sleeve element body 40 shown in FIG. 4, and the sleeve element body 40 is strongly pressed against the cylindrical surface 51 </ b> A of the rotating drum 51 by its contraction force. And is configured to be fixed. Further, the rotary drum 51 is provided with an air ejection mechanism (not shown) for ejecting air from an air hole (not shown) opened in the cylindrical surface 51A.
Further, the sleeve element support portion 53 is provided with a rotation direction position sensor 54 for obtaining the rotation position information θ of the rotary drum 51.

The linear motion portion 65 includes a guide bar 66 extending in a direction parallel to the axis N of the rotary drum 51, a support member 67 moving along the guide bar 66, and position information of the support member 67 (position in the axis N direction). And an axial position sensor 68 for obtaining information Z).
The laser beam irradiation unit 60 is supported by the support member 68 of the linear motion unit 65 and is configured to be movable in a direction parallel to the axis N. Further, the laser beam irradiation unit 60 is provided with an output adjuster 61 that adjusts the output of the laser beam. In the present embodiment, the laser beam irradiation unit 60 is constituted by a carbon dioxide laser.

The control unit 70 includes a storage unit 71 that stores first image data 41 indicating the position and shape of the notch for positioning, a cutting position and shape, and second image data 42 indicating the position and shape of the image pattern of the relief plate 33; Based on the first image data 41, the energy density of the laser beam when forming the cut and positioning notch, and the energy density of the laser beam when forming the image pattern of the relief plate 33 based on the second image data 42, And an energy density adjusting unit 72 for adjusting each of the above.
And based on the 1st image data 41 and the 2nd image data 42, operation | movement of the rotating drum 51, the linear motion part 65, and the laser beam irradiation part 60 is controlled, cutting | disconnection of the sleeve element | base_body 40, positioning notch part 34 Formation of the relief plate 33 is performed.

Next, a method for manufacturing a sleeve printing plate using the sleeve printing plate manufacturing apparatus 50 according to the present embodiment configured as described above will be described.
First, the sleeve body 40 shown in FIG. 4 is mounted on the cylindrical surface 51 </ b> A of the rotary drum 51. At this time, one end of the sleeve body 40 is fitted into the rotary drum 51, and in this state, air is ejected from the air hole by the air ejection mechanism. Then, the diameter of the sleeve body 40 is expanded by the air, and the sleeve body 40 is attached to the rotary drum 51. At this time, the axis O of the sleeve body 40 and the axis N of the rotary drum 51 coincide.

  Here, the sleeve body 40 is formed by laminating a photosensitive resin that can be engraved with laser light on the outer peripheral surface of a polyethylene terephthalate (PET) resin, and the length L0 in the axis O direction is 50 mm ≦ L0 ≦. In this embodiment, L0 = 1600 mm. That is, as shown in FIG. 4, eight sleeve printing plates 30 can be manufactured from one sleeve element body 40.

Next, the first image data 41 indicating the position and shape for forming the notch for positioning, the cutting position and the shape, and the second image data 42 indicating the position and the shape of the image pattern of the relief plate 33 are stored in the storage unit 71. .
Then, the control unit 70 controls the operations of the rotating drum 51, the linear motion unit 65, and the laser beam irradiation unit 60 based on the first image data 41 and the second image data 42.

  While irradiating the laser beam from the laser beam irradiation unit 60 toward the sleeve element body 40, the rotary drum 51 is rotated by the rotation drive unit 55 and moved in the direction of the axis N by the linear movement unit 65. The entire outer peripheral surface is scanned by the laser beam irradiation unit 60.

Here, at a location corresponding to the first image data 41, a command signal is transmitted from the energy density adjusting unit 72 to the output adjuster 61, the laser light output is set high, and the entire thickness of the sleeve body 40 is removed. Will be. As a result, the sleeve body 40 is cut and the positioning notch 34 is formed.
On the other hand, at a location corresponding to the second image data 42, a command signal is transmitted from the energy density adjusting unit 72 to the output adjuster 61 to set the output of the laser light low, and a part of the thickness of the sleeve body 40 is reduced. Will be removed. As a result, an image pattern of the relief plate 33 is formed on the sleeve body 40.

  In this way, the energy density of the laser light is adjusted by adjusting the output of the laser light, and the entire outer peripheral surface of the sleeve element 40 is scanned once by the laser light irradiation unit 60, thereby Cutting, formation of the positioning notches 34 and formation of the image pattern of the relief plate 33 are performed, and eight sleeve printing plates 30 are produced from one sleeve element body 40.

According to the sleeve printing plate manufacturing apparatus 50 and the sleeve printing plate manufacturing method using the manufacturing apparatus 50 according to the present embodiment configured as described above, the sleeve body 40 is made to be the same sleeve body support portion. Since the formation of the positioning notch 34 and the formation of the image pattern on the relief plate 33 are performed in the state where the rotary drum 51 is mounted on the rotation drum 51, the relative position between the positioning notch 34 and the image pattern of the relief plate 33 is displaced. The sleeve printing plate 30 capable of high-quality printing without fear is manufactured.
Further, the sleeve element 40 is removed by irradiating the laser beam, and the cutting and the image pattern of the positioning notch 34 and the relief plate 33 are formed, so that heat accompanying the processing acts locally. Thus, deformation of the sleeve printing plate 30 can be suppressed.

  Further, storage means 71 for storing the first image data 41 indicating the cutting position and shape and the positioning notch forming position and shape, and the second image data 42 indicating the formation position and shape of the image pattern of the relief plate 33. The operation of the rotary drum 51, the linear motion unit 65, and the laser beam irradiation unit 60 is controlled based on the first image data 41 and the second image data 42, so that the sleeve printing plate 30 can be formed with high dimensional accuracy. It becomes possible to mold.

  Further, the image pattern of the relief plate 33 is formed based on the energy density of the laser beam and the second image data 42 when the sleeve element 40 is cut and the positioning notch 34 is formed based on the first image data 41. Since the energy density adjusting unit 72 for adjusting the energy density of the laser beam at the time is provided, the laser processing depth to the sleeve element body 40 can be adjusted, respectively. By scanning the outer peripheral surface of the body 40 once, the sleeve printing plate 30 can be formed. Therefore, the sleeve printing plate 30 can be efficiently manufactured, and the relative position accuracy between the positioning notch 34 and the image pattern of the relief plate 33 can be further improved.

In this embodiment, since the thickness of the sleeve body 40 is 0.1 mm or more and 1.0 mm or less, the rigidity of the sleeve printing plate 30 is ensured, and the image pattern is deformed or positioned due to elongation or the like. The deformation of the notch 34 for use can be suppressed, and the cutting and positioning notch 34 can be efficiently formed by laser processing.
Further, in the present embodiment, since the laser beam irradiation unit 60 is a carbon dioxide gas laser, the output of the laser becomes relatively high, and the cutting and the positioning notch 34 are efficiently and reliably performed. be able to.

As mentioned above, although embodiment of this invention was described, this invention is not limited to this, It can change suitably in the range which does not deviate from the technical idea of the invention.
For example, although it has been described that the energy density of the laser beam is adjusted by adjusting the output of the laser beam irradiation unit, the present invention is not limited to this, and the rotational speed of the rotating drum and the moving speed of the linear motion unit are reduced. Thus, the energy density of the laser beam at the location may be increased, and the energy density of the laser beam at the location may be decreased by increasing the rotational speed of the rotating drum and the moving speed of the linear motion portion.

In addition, although the laser light irradiation unit has been described as a configuration for performing the cutting, the formation of the positioning notch, and the formation of the relief image pattern by scanning the outer peripheral surface of the sleeve body once, it is limited to this. Alternatively, the sleeve printing plate may be produced by scanning the laser beam irradiation unit twice or more.
Furthermore, although the sleeve element body has been described as being cut along with the formation of the positioning notch and the relief image pattern, the present invention is not limited to this, and the cutting step may be performed separately.

In addition, the configuration of the rotation driving unit that rotates the rotating drum is not limited to that illustrated, and is not particularly limited as long as the rotating drum can be rotated about the axis N.
Further, the configuration of the linear motion portion is not limited to the illustrated one, and it is sufficient that the laser light irradiation portion can be moved in the axis N direction.

  Further, the manufactured sleeve printing plate 30 is not limited to the one described in the present embodiment. For example, the sleeve support may be made of fiber reinforced plastic (FRP) or may not have a sleeve support.

The results of confirmation experiments conducted to confirm the effects of the present invention will be shown below.
As a sleeve element for forming a relief plate, a plate material (thickness 0.6 mm) made of a photosensitive resin that can be engraved with laser light on the surface of a substrate (thickness 0.45 mm) made of FRP (fiber reinforced plastic) ), An outermost diameter of 218 mm, and an axial length of 2000 mm were prepared.
This sleeve element was mounted on the rotating drum 51, and was cut and engraved by irradiating the laser beam from the laser beam irradiation unit 60.

The output of the laser beam was 150 W, and the condensing diameter at the location where the sleeve element was processed was 0.01 mm.
Here, when the sleeve element is rotated at a rotational speed of 200 rpm (circumferential speed 2.3 m / sec), the entire thickness direction of the sleeve element is removed by the laser beam, and the sleeve element can be cut. there were.
On the other hand, when the sleeve element is rotated at a rotational speed of 500 rpm (circumferential speed 5.7 m / sec), only a part of the sleeve element in the thickness direction is removed by the laser beam, and the sleeve element is engraved. It was possible to do. The engraving depth was 0.5 mm.

Next, the condensing diameter of the laser beam at the location where the sleeve element was processed was 0.01 mm, and the rotation speed of the rotating drum was 200 rpm.
Here, the output of the laser beam was adjusted by the output adjuster. In this embodiment, an output regulator having an AOM (ACOUSTIC OPTICAL MODULATOR) is used.
When the output of the laser beam was 150 W, the entire thickness of the sleeve element body was removed by the laser beam, and the sleeve element body could be cut.
On the other hand, when the output of the laser beam is 60 W, only a part of the sleeve body in the thickness direction is removed by the laser beam, and the sleeve body can be engraved. The engraving depth was 0.5 mm.

From this embodiment, the energy density of the laser beam can be controlled by adjusting the number of rotations of the sleeve element (rotating drum), and engraving and cutting with the laser beam can be performed with the same apparatus. confirmed.
In addition, it was confirmed that cutting and engraving can be performed even when the number of rotations of the rotating drum is constant by adjusting the output of the laser beam at the location where the sleeve body is processed. .

30 Sleeve Printing Plate 31 Sleeve Plate Material 33 Letter Plate 40 Sleeve Element 41 First Image Data 42 Second Image Data 50 Sleeve Printing Plate Manufacturing Device 51 Rotating Drum 52 Shaft Support 53 Sleeve Element Supporting Unit 60 Laser Light Irradiation Unit 61 Output Adjustment unit 65 Linear motion unit 70 Control unit 71 Storage unit 72 Energy density adjustment unit

Claims (4)

A method for producing a sleeve printing plate, comprising: an image pattern that is used by being mounted on a cylinder of a printing apparatus and printed on a printing material; and a positioning notch that is engaged with a guide pin erected on the cylinder. Because
A positioning notch forming step for forming the positioning notch in a cylindrical sleeve base, an image pattern forming step for forming the image pattern on the sleeve base, and a plurality of the sleeve printings with the sleeve base. A long sleeve element capable of producing a plate, and a cutting step of cutting the sleeve element into a predetermined axial length.
A rotary drum to which the sleeve element can be mounted on an outer peripheral surface, a sleeve element support part having a shaft support part that rotatably supports the rotary drum, and a laser beam to the sleeve element mounted on the rotary drum The laser beam irradiating unit is used to perform the cutting step, the positioning notch forming step, and the image pattern forming step on the same sleeve element support portion. It is configured to be done with the body attached,
In the cutting step and the positioning notch forming step, operations of the rotating drum and the laser irradiation unit are controlled based on first image data indicating a cutting position and shape and a positioning notch forming position and shape. By removing the entire thickness of the sleeve element body, cutting the sleeve element body and forming the positioning notch,
In the image pattern forming step, the image pattern is formed by controlling operations of the rotating drum and the laser irradiation unit based on second image data indicating a position and a shape of the image pattern .
The laser processing machine has an energy density adjusting unit that controls the energy density of laser light irradiated to the sleeve body,
The sleeve printing plate, wherein the laser beam irradiation unit scans the outer peripheral surface of the sleeve body once to perform the cutting step, the positioning notch forming step, and the image pattern forming step. Manufacturing method.   2. The method for producing a sleeve printing plate according to claim 1, wherein a thickness of the sleeve body is 0.1 mm or more and 1.0 mm or less. The method for manufacturing a sleeve printing plate according to claim 1 or 2, wherein the laser beam irradiation unit is configured to irradiate a carbon dioxide laser. An apparatus for producing a sleeve printing plate, comprising: an image pattern that is used by being mounted on a cylinder of a printing apparatus and printed on a printed material; and a positioning notch that is engaged with a guide pin standing on the cylinder. Because
A rotating drum to which a cylindrical sleeve element can be mounted, and a sleeve element supporting part having a shaft support part rotatably supporting the rotating drum;
A laser beam irradiating unit that irradiates the sleeve element mounted on the rotating drum with a laser beam;
A control unit for controlling the operation of the rotating drum and the laser beam irradiation unit,
The control unit includes storage means for storing the first image data indicating the cutting position and shape, the positioning notch forming position and shape, and the second image data indicating the position and shape of the image pattern, and the first image. An energy density adjusting unit that adjusts an energy density of laser light when forming the positioning notch based on data and an energy density of laser light when forming the image pattern based on the second image data And are provided ,
The laser beam irradiation unit is controlled to perform cutting, formation of the positioning notch, and formation of the image pattern by scanning the outer peripheral surface of the sleeve element once. Sleeve printing plate manufacturing equipment.

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