JP2015128838A - Master roll and stencil printing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a master roll in which, during plate making, even when base paper is drawn from the master roll and a core body rotates according to this, a wireless tag can communicate with a communication unit properly, and a stencil printing machine which can be manufactured and managed easily by suppressing the number of components.SOLUTION: A master roll 13 includes: a cylindrical core body 61; base paper N for stencil printing wound around the core body 61; and a wireless tag 64 provided at the core body 61 and performing wireless communication with a communication unit 53 installed in a plate making device of a stencil printing machine. The wireless tag 64 includes an antenna coil 65a. An arrangement pattern of a conductor of the antenna coil 65a is formed in a flat shape. The wireless tag 64 is installed in such a manner that a major axis direction of the flat-shaped arrangement pattern crosses a cylinder center direction G of the core body 61.

Description

  The present invention relates to a stencil printing machine.

Conventionally, in a stencil printing machine, a technique is known in which a wireless tag is attached to a consumable master roll so that communication can be performed between a communication unit provided on the stencil printing machine side and the wireless tag of the master roll. Patent Document 1 below discloses that in such a stencil printing machine, a wireless tag is attached to a core body of a master roll.

JP 2002-321433 A

However, in the above conventional stencil printing machine, when making a plate, when the base paper is pulled out from the master roll and the core rotates along with this, the distance between the wireless tag and the communication unit is long, or the wireless tag and the communication unit There is a problem that communication cannot be performed properly because the angles are not opposed to each other.

There are a plurality of master roll sizes such as A3, B4, and legal. When the wireless tag is provided at the end of the master roll core in the cylinder center direction, the communication unit must be installed at a position corresponding to the size of each master roll in the plate making section of the stencil printing machine main body. Therefore, it is necessary to change the installation position of the communication unit in accordance with the size of the master roll, which increases the number of parts and makes manufacturing and management complicated.

The present invention solves the above-described problem, and even when the base paper is pulled out from the master roll during the plate making and the core body rotates with this, the wireless tag can properly communicate with the communication unit. An object of the present invention is to provide a stencil printing machine that can be easily manufactured and managed by suppressing the master roll and the number of parts.

  In order to achieve the above object, a master roll according to the present invention is provided with a cylindrical core body, a stencil printing paper wound around the core body, a core body, and a stencil printing machine. A wireless tag that performs wireless communication with a communication unit installed in the plate making apparatus, the wireless tag includes an antenna coil, and the array pattern of the conductors of the antenna coil is formed in a flat shape. Are installed such that the direction of the major axis of the flat array pattern intersects the cylinder center direction of the core.

In the above configuration, the wireless tag has an antenna coil conductor array pattern formed in a substantially rectangular spiral shape.

And in the said structure, a radio | wireless tag is installed in the direction in which the short-diameter side of the arrangement pattern of the conductor of an antenna coil turns into a cylinder center direction.

And in the said structure, the radio | wireless tag is installed so that the arrangement pattern of the conductor of an antenna coil may be formed in the substantially square spiral shape, and the two sides where the said substantially square opposes cross | intersect the cylinder center direction of a core. The

Furthermore, in each said structure, a wireless tag is provided in the outer peripheral surface of a core.

  Furthermore, a master roll according to the present invention is provided in a plate making apparatus of a stencil printing machine, provided on a cylindrical core body, a stencil printing base paper wound around the core body, and the core body. A wireless tag that performs wireless communication with the communication unit, and the wireless tag is provided at a position spaced apart from a central portion in the tube center direction in the tube center direction of the core body.

Further, a stencil printing machine according to the present invention includes a master roll mounting unit that mounts the master roll having the above-described configuration and a communication unit that performs communication between a wireless tag provided on the master roll. Have the device.

According to the master roll of the present invention, the wireless tag includes the antenna coil, the conductor arrangement pattern of the antenna coil is formed in a flat shape, and the wireless tag has a major axis direction of the flat array pattern. Since the base paper is drawn out from the master roll during plate making and the core rotates along with this, the wireless tag communicates with the communication unit. The possible range can be widened.

Further, when the antenna coil array pattern is formed in a substantially rectangular spiral shape, a general-purpose and inexpensive wireless tag can be used, and the cost can be reduced.

And when a wireless tag is installed in the direction in which the short axis direction of the arrangement pattern of the conductors of the antenna coil is the tube center direction, the process of attaching the wireless tag to the core can be simplified.

The wireless tag has an antenna coil array pattern formed in a substantially square spiral shape,
When the two opposite sides of the substantially square are installed so as to intersect the cylinder center direction of the core, the base paper is pulled out from the master roll during plate making, and the core rotates accordingly. However, the range in which the wireless tag can communicate with the communication unit can be widened.

Furthermore, when the wireless tag is provided on the outer peripheral surface of the core body, the manufacturing process of the master roll can be simplified as compared with the case where the wireless tag is provided in the cylinder of the core body.

In addition, according to the master roll of the present invention, the wireless tag is provided at a position spaced a predetermined distance from the central portion of the core in the tube center direction of the core body. The plate making unit of the stencil printing machine can be installed at a position spaced a predetermined distance from the center in the width direction. Accordingly, it is not necessary to change the installation position of the communication unit even if the master rolls have different sizes, the number of parts of the stencil printing machine can be suppressed, and the stencil printing machine can be easily manufactured and managed.

Further, a stencil printing machine according to the present invention comprises a plate making apparatus provided with a master roll mounting portion for mounting the master roll having the above-described configuration and a communication unit for performing communication between a wireless tag provided on the master roll. Therefore, the communication unit can appropriately communicate with the wireless tags of various master rolls.

1 is a schematic configuration diagram of a stencil printing machine according to an embodiment of the present invention. It is a perspective view of the master roll mounting part, plate member, and communication unit of the stencil printing machine. It is a perspective view in the state where a master roll was installed in a master roll installation part of the stencil printing machine. It is a figure which shows the radio | wireless tag provided in the said master roll. It is a figure which shows the master roll concerning embodiment of this invention. It is a figure which shows the master roll concerning other embodiment of this invention. It is a usage pattern figure of the said master roll. It is a usage pattern figure of the said master roll. It is a usage pattern figure of the said master roll.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic diagram of a stencil printing machine. As shown in FIG. 1, the printing machine main body 1 is provided with a paper feed unit 2 at the rear end, a paper discharge unit 3 at the front end, and an image reading unit 4 on the upper side. In the printing machine main body 1, a printing unit 5 is provided at an approximately middle portion in the front-rear direction, a plate making unit 6 is provided on the upper rear side of the printing unit 5, and a plate discharging unit 7 is provided on the upper front side of the printing unit 5. Is provided.

A paper feed roller 31 and a separating plate 32 are disposed at the front end of the paper feed unit 2, and the printing paper P stacked on the paper feed tray 33 is supplied one by one from the top. ing.

The paper discharge unit 3 includes a paper discharge belt 21, a fan 22, and a paper discharge table 23. The paper P on the paper discharge belt 21 is attracted to the paper discharge belt 21 by the fan 22, and the paper discharge table 23. It is designed to discharge upward.

The image reading unit 4 reads an image of a document placed on a glass document table (not shown) and generates image data. The image data may be received from an external computer.

The printing unit 5 includes a printing unit 25, a pressing roller 12, and a timing roller 18. The printing unit 25 includes a printing drum 11. The printing drum 11 winds the plate-made base paper N sent from the plate-making unit 6 around the outer peripheral surface. There are a plurality of sizes of the base paper N wound around the outer peripheral surface of the printing drum 11, such as for A3, B4, and legal, and ink supply holes (not shown) within a range corresponding to the size of the various base papers N Is mounted on the printing press main body 1 and used. A screen 38 is wound around and fixed to the outside of the ink passage hole forming range.

The printing drum 11 is set to a circumferential length around which, for example, the A3 base paper N that is the largest of the various sizes of the base paper N can be wound, and the diameter of the printing drum 11 is set to a length corresponding to the circumferential length. The The axial length of the printing drum 11 is also set to a length according to the width dimension of the maximum size of the base paper N. As a result, even if the size of the base paper N wound around the printing drum 11 is different and the formation area of the hole for passing ink formed on the peripheral surface of the printing drum 11 and the winding range of the screen 38 are different, the printing drum The same diameter 11 is used regardless of the size of the base paper N. The contact with the lower pressing roller 12 is maintained in the same state.

In this way, since the diameters of the printing drums 11 are common, the various printing drums 11 can mount the printing drums 11 having different base paper sizes to one stencil printing machine I with compatibility. When the original size of the printed material to be printed is A3 and A4, it is possible to make a plate using the base paper N having the same width in the width direction of the master roll 13 used. An A3 printing drum and an A4 printing drum having different ink passage hole formation areas and different winding ranges of the screen 38 are attached to and detached from the printing machine main body 1 and exchanged, so that one stencil printing machine is provided. Using I, two kinds of sizes can be printed.

An ink roller 10, a squeegee roller 19, and an ink supply device 55 are installed inside the printing drum 11. The ink roller 10 is inscribed in the printing drum 11, and the squeegee roller 19 is in rolling contact with the ink roller 10. An ink reservoir 40 is formed at the rolling contact portion between the ink roller 10 and the squeegee roller 19. The ink supply device 55 supplies ink to the ink reservoir 40 from above.

A clamp 54 extending in the left-right direction is provided at a predetermined location on the peripheral wall of the printing drum 11. The clamp 54 clamps the end portion of the base paper N after plate making. After the plate making, the end of the base paper N is fixed by the clamp 54 and wound around the screen 38 as the printing drum 11 rotates.

The pressing roller 12 is opposed to the printing drum 11 so as to be able to be pressed from below, and is movable in the vertical direction. A pair of timing rollers 18 are arranged in the vicinity of the rear part of the printing unit 5. The timing roller 18 rotates at an appropriate timing in synchronism with the driving of the printing drum 11, and feeds the printing paper P to the printing unit 5.

The plate making unit 6 constitutes a plate making apparatus. The plate making unit 6 includes a thermal head 14, a master roll mounting unit 15, and a communication unit 53. Based on the image data generated by the image reading unit 4, the thermal head 14 punches the base paper N fed from the master roll 13 to make a plate. A platen roller 27 is disposed facing the thermal head 14. The plate making unit 6 is further provided with a cutting tool 28 and a base paper transport roller 30 on the downstream side of the platen roller 27. The cutting tool 28 is a rotary blade, and is reciprocally driven by a rotary blade motor in a direction crossing the plate-making paper conveyance path.

FIG. 2 is a perspective view of the master roll mounting portion 15, the plate-like member 57, and the communication unit 53. FIG. 3 shows a state in which the master roll 13 is mounted on the master roll mounting portion 15. As shown in FIG. 2, the housing 41 includes a front plate 42, a rear plate 43, a bottom plate 44 and a side plate 45 and is formed in a substantially rectangular parallelepiped, uncovered box shape. Further, as shown in FIG. 3, the master roll 13 is inserted into the housing 41 from above, and the base paper N is drawn upward from the rear plate 43 side and passes over the upper end of the front plate 42 to the right side in FIG. Will be sent forward. The front plate 42 is fixed to the casing setting portion 59 of the plate making unit 6, and even if the base paper N is pulled forward, the master roll 13 abuts against the front plate 42 and is stopped.

The rear plate 43, the bottom plate 44, and the side plate 45 are integrally formed, and projecting portions 47 projecting downward are formed at the rear portions of the bottom plate 44 in the width direction. The projecting portion 47 is inserted into a groove 58 extending in the front-rear direction formed in the plate-like member 57 facing the bottom plate 44 below the bottom plate 44 and locks the rear end portion of the elastic body 48 made of a coil spring. The front end portion of the elastic body 48 is locked to the lower portions of both ends in the width direction of the front plate 42, and the rear plate 43, the bottom plate 44, and the pair of side plates 45 are urged forward.

This is because the rear plate 43 presses the master roll 13 against the front plate 42 even when the remaining amount of the base paper N of the master roll 13 in the casing 41 decreases and the roll diameter decreases, so that the master roll 13 in the casing 41 is pressed. This is a configuration for stabilizing the posture. Therefore, it is of course possible to use means for urging the rear plate 43 forward with an appropriate pressing force by replacing the elastic body 48 with a coil spring. For example, the rear plate 43 may be pulled or pushed forward by an elastic body such as a leaf spring or rubber, or the rear plate 43 can be moved integrally with respect to the fixed front plate 42 without using an elastic body. It is also possible to make use of such an inclination that the entire rear structure composed of the bottom plate 44 and the side plate 45 is made sufficiently heavy and is slid forward by gravity. The inclination may be used under the bottom plate 44, or may be variously provided such that an inclination is provided on the back surface of the rear plate 43 and the rear plate 43 is pushed forward with a sufficiently heavy roller that falls along the inclination. The following configuration can be adopted.

Alternatively, only the rear plate 43 may be configured separately and only the rear plate 43 may be moved singly. The operation of these moving bodies should be as smooth as possible, and the pressing force of the rear plate 43 is moderately large so that the rotation of the master roll 13 in the casing 41 is smooth and friction is reduced. Should be taken care of. Further, in order to prevent the master roll 13 from being lifted, it is preferable that the friction in the contact with the rear plate 43 is larger than the friction in the contact between the master roll 13 and the front plate 42. For example, the inner surface of the rear plate 43 can be coated with a material that increases the friction coefficient, a rubber sheet can be attached, or the inner surface of the front plate 42 can be coated with a fluororesin so as to reduce friction.

The side plate 45 has a front upper end cut away, and a finger can be inserted into the core body 61 from the side when the master roll 13 is taken out.

The movement in the front-rear direction of the integrated rear part configuration described above is guided by fitting the slider 51 that protrudes downward from the bottom plate 44 to the guide shaft 50 that extends rearward from the lower end of the front plate 42. The installation position in the width direction of the guide shaft 50 and the slider 51 is a position shifted from the center in the width direction of the housing 41. FIG. 2 shows a case where the guide shaft 50 and the slider 51 are shifted to the right side as viewed from the rear by a distance Lg from the center portion C in the width direction of the housing 41 and the housing installation portion 59.

In addition, a pair of support convex portions 60 are provided in the vicinity of both edges in the width direction of the bottom plate 44. The support convex part 60 is formed in a hemispherical shape. The support convex portion 60 is configured such that the top of the spherical surface is in point contact with the portion between the groove 58b and the groove 58c of the lower plate-like member 57, thereby supporting the housing 41 with a point. Since the support convex part 60 supports the case 41 with a point, the frictional resistance when the case 41 slides back and forth with respect to the plate member 41 can be reduced, and the generation of abnormal noise can be suppressed. is there. Then, by shifting the installation position of the guide shaft 50 and the slider 51 from the central portion C in the width direction, the support convex portion 60 supports the fulcrum of the housing 41 at a point while slightly shifting the fulcrum of the casing 41 from the central portion C in the width direction. The housing 41 in the housing installation unit 59 is stabilized.

Further, when viewed from the rear in FIG. 2, which is opposite to the installation position of the guide shaft 50 and the slider 51 from the center portion C in the width direction of the housing 41, a rectangular distance is formed on the bottom plate 45 at a position separated by a predetermined distance Lt on the left side. A shaped opening 52 is formed. A communication unit 53 that performs communication with the wireless tag 64 provided on the master roll 13 is installed below the opening 52. When the master roll 13 is mounted on the master roll mounting unit 15, the communication unit 53 performs wireless communication with the wireless tag 64 to transmit / receive necessary information.

Although not shown, the communication unit 53 is a known unit including a CPU, a memory, a modulation unit, a filter, a demodulation unit, an antenna, and the like. The CPU is an arithmetic device that controls communication control with the control device 8 and the operation of the communication unit 53. The memory stores programs and data necessary for the CPU to perform control.
The modulation unit places an instruction or information to be transmitted to the wireless tag 64 on a carrier wave. The filter removes a frequency component unnecessary for communication from the modulated waveform. The output of the modulation unit is input to the antenna facing the wireless tag 64 to be communicated, received by the wireless tag 64 to be communicated, and instructions and information are transmitted. The demodulator demodulates the reflected wave from the wireless tag 64 on which information stored in the wireless tag 64 is placed.

The master roll 13 mounted on the master roll mounting unit 15 has a stencil printing base paper N of a predetermined length wound around a cylindrical core body 61. The length of the master roll 13 in the cylinder center direction G is different for each type of base paper. A wireless tag 64 is provided on the outer peripheral surface of the core body 61 and inward of the base paper N. The wireless tag 64 includes an IC, a memory, and an antenna. The IC includes a control arithmetic circuit, a modulation / demodulation circuit for performing communication with the communication unit 53, a rectifier circuit for obtaining power from a carrier wave transmitted from the communication unit 53, and the like. In the memory, the type of master roll 13, manufacturer name, size, number of plates, length of base paper N, film strength and film thickness of base paper N, date of manufacture, and the first printed post-plate suitable for base paper N Various information such as the magnitude of the pressing pressure of the pressing roller 12 against the printing drum 11 is stored.

The antennas of the communication unit 53 and the wireless tag 64 are both configured by an antenna coil formed in a coil shape. The antenna coils of both the communication unit 53 and the wireless tag 64 have the same size. By applying a voltage to the antenna coil by the communication unit 53, a magnetic field generated around the coil generates a voltage at the antenna of the wireless tag 64 by electromagnetic induction, and communication is performed.

The CPU of the communication unit 53 receives an instruction from the control device 8, communicates with the wireless tag 64, reads information in the memory of the wireless tag 64, transmits the read information to the control device 8, and controls the control device 8. Information received from the wireless tag 64 is written.

The size and shape of the communication unit 53 and the wireless tag 64 are not particularly limited, but it is preferable to select a small type in terms of installation space and price. The wireless tag 64 is preferably a label type because it can be easily attached to the core body 61. As the arrangement pattern of the conductors of the antenna coil of the wireless tag 64, a conductor formed in a flat shape is used.

FIG. 4 is a plan view showing three examples of the wireless tag 64 in which the conductor coil array pattern has a flat shape. In the wireless tag 64a shown in FIG. 4A, the conductor arrangement pattern of the antenna coil 65a is formed in a substantially elliptical shape. Also, the conductor arrangement pattern of the antenna coil 65b of the wireless tag 64b shown in FIG. 4B is formed in a substantially rectangular spiral shape. In each of the two wireless tags 64a and 64b, the major axis Ta and Tb direction Q of the conductor arrangement pattern is shown as the vertical direction in the figure, and the minor axis Ua direction V is shown as the horizontal direction.

The wireless tags 64 a and 64 b are installed so that the directions Q of the long diameters Ta and Tb of the flat array pattern intersect the cylindrical center direction G of the core body 61. The crossing angle is not 0 degree, that is, the direction Q of the major axes Ta and Tb is not required to be parallel to the cylinder center direction G of the core body 61, and the crossing angle can be freely set within a range larger than 0 degree and smaller than 180 degrees. It is. FIG. 5A shows a case where the direction Q of the major axis Ta of the wireless tag 64 a intersects the cylinder center direction G of the core body 61 at an angle α as an example. FIG. 5A shows a case where the angle α is 45 degrees.

On the other hand, in the wireless tag 64c shown in FIG. 4C, the conductor arrangement pattern of the antenna coil 65c is formed in a substantially square spiral shape. When the arrangement pattern of the conductors of the antenna coil 65c is formed in a substantially square spiral shape like the wireless tag 64c, the wireless tag 64c has two sides a and c or b and d facing each other in the substantially square shape. The core body 61 is installed in a direction crossing the cylinder center direction G. The crossing angle between two opposite sides a and c, or b and d, and the cylinder center direction G is not 0 degrees, that is, the opposite sides a and c, or b and d directions K1 or K2 are cores. The crossing angle may be freely set in a range larger than 0 degree and smaller than 180 degrees as long as it is not parallel to the cylinder center direction G of the body 61. In FIG. 5B, as an example, the substantially square wireless tag 64c has a direction K2 along two opposite sides b and d of the antenna coil 65c so as to intersect the cylindrical direction G of the core body 61 at an angle β. The case where it is installed is shown. FIG. 5B shows a case where the angle β is 60 degrees.

As the arrangement pattern of the conductors of the antenna coil, it is preferable to use a pattern formed in a substantially rectangular spiral shape shown in FIG. When the antenna coil array pattern is formed in a substantially rectangular spiral shape, the direction V of the minor axis Ub of the array pattern of the antenna coil 65b is the direction in which the cylinder center direction G and the major axis Tb is in the cylinder center direction G. It is preferable to install in an orthogonal direction.

FIG. 6 shows the core bodies 61a, 61b, 61c of the three master rolls 13 installed in a direction in which the direction V of the minor axis Ub of the array pattern of the antenna coils 65b is the cylindrical center direction G. The cores 61a, 61b, 61c of the master roll 13 shown in FIG. The lengths La, Lb, and Lc of the core bodies 61a, 61b, and 61c in the cylinder center direction G are different depending on the size of the base paper N such as for A3, B4, and legal.

The core body 61 is provided with wireless tags 64a, 64b, and 64c at positions separated from the central portion E in the cylinder center direction by a predetermined distance Lt. As described above, the position where the wireless tag 61 is provided is not based on any end in the tube center direction G of the core body 61 but on the center E in the tube center direction. Thus, the installation position of the communication unit 53 that communicates with the wireless tag 64 can be set to a position that is separated from the central part C in the width direction of the housing installation part 59 by a predetermined distance Lt. Therefore, it is possible to communicate with the wireless tag 64 using the same communication unit 53 for the master rolls 13 of all sizes. For this reason, compared with the case where the installation position of the communication unit 53 is changed according to the size of the master roll 13, the number of parts to be installed in the housing installation unit 59 required for communication with the wireless tag 64 can be suppressed. .

In FIG. 6, the distance Lt between the center portion E of the cores 61 a, 61 b, 61 c and the right end J of the flat-shaped wireless tags 64 a, 64 b, 64 c is the largest among the plural types of master rolls 13. The length is shorter than the distance Ld from the center portion E of the core body 61 of the core roll 61 of the small size master roll 13 to one end portion. And it is preferable to set it as about 1/5 thru | or 5/5 of the distance Ld from the cylinder center direction center part E of the core 61c to one edge part. Thus, the side of the guide shaft 50 installation position below the housing 41 can be used as the installation space for the communication unit 53.

The casing 41 has a size corresponding to the size of the base paper of the master roll 13 to be mounted. Therefore, there are a plurality of types of lengths in the width direction of the casing 41 depending on the size of the base paper. When the various sizes of the casing 41 are installed, one end of the casing 41 in the width direction is not installed in accordance with the end of the casing installation section 59, but the casing of the plate making section 6 is installed. The center part C in the width direction of the installation part 59 is used as a reference, and the center part in the width direction of the casing 41 is aligned with the center part C.

The plate-like member 57 installed below the housing 41 has a different position in the width direction when the length in the width direction of the housing 41 differs depending on the size of the base paper. The positions where the grooves 58 are formed are different. However, in the present embodiment, the plate-like member 58 in which the grooves 58a, 58b, and 58c are formed at a plurality of locations corresponding to the length in the width direction of the plurality of sizes of the casing 41 is used. FIG. 2 shows a housing 41 to which a master roll 13 around which a base paper N for A3 having the largest base paper size is wound is mounted. In FIG. 2, the protruding portion 47 is inserted into the outermost groove 58 a among the plurality of grooves 58 a, 58 b, 58 c of the plate-like member 57.

Thus, by forming the plurality of grooves 58 in the plate-like member 57, the plate-like member 57 can be used in common even if the size of the casing 41 is different, and common to a plurality of types of stencil printing machines I. By using parts, the number of parts can be suppressed as a whole.

The plate discharging unit 7 includes a drawing roller 16 and a winding roller 17 and the like. The used base paper N mounted on the printing drum 11 is removed, and the drawing roller 16 pulls it into the plate discharging unit 7 to be wound as a plate discharging roll. It is supposed to take.

In the paper transport path S from the paper feed tray 33 of the paper feed section 2 to the paper discharge tray 23 of the paper discharge section 3, paper sensors 66 are installed at a plurality of locations, and the transport state of the paper P is detected and monitored as needed. The

The stencil printing machine I includes a control device 8. The control device 8 includes a CPU (central processing unit), an I / O (input / output) port, a ROM (read only storage device), a RAM (read / write storage device), a timer, etc., which are not shown, A microcomputer having a configuration connected by a signal bus is provided. The control device 8 is provided in a control board arrangement section in the printing machine main body 1.

The control device 8 has a function of controlling control target drive means such as various motors based on various signals from an operation panel (not shown), detection signals from various sensors, operation programs called from the ROM, and related data. Have. The control device 8 has a function of controlling an image reading operation, a plate making operation, a plate discharging operation, a paper feeding operation, a paper discharging operation, a printing operation, a counting operation, and a liquid crystal display unit of the operation panel.

The ROM stores in advance an operation program for the entire stencil printing machine I, necessary relation data, and the like, and this operation program is appropriately called by the CPU. The RAM has a function of temporarily storing calculation results of the CPU, a function of storing data signals and ON / OFF signals set and input from various keys and various sensors on the operation panel as needed. .

A communication unit 53 is electrically connected to the control device 8. The communication unit 53 has a function of performing wireless communication with the wireless tag 64 attached to the master roll 13 and reading or writing information with respect to the wireless tag 64. That is, when the control device 8 instructs the communication unit 53 to read information stored in the wireless tag 64 or write information to the wireless tag 64, the communication unit 53 instructs the control device 8 to Upon receipt, information is read from or written to the wireless tag 64.

The operation of the stencil printing machine I will be described below. When a document is set in the image reading unit 4 and the prepress key 83 is pressed, an image reading process is first executed. The image reading unit 4 optically reads an original by an image sensor such as a CCD and converts it into an electric signal. At the same time as the image reading process, the plate discharging process is executed, and the used base paper N wound around the outer periphery of the printing drum 11 is peeled off from the printing drum 11 by the drawing roller 16 and taken up and collected by the winding roller 17.

The plate making operation is performed according to the information read by the image reading unit 4 and converted into an electric signal. In the plate making operation, the base paper N is pulled out from the master roll 13 mounted on the master roll mounting portion 15, and a number of heat generating elements of the thermal head 14 are selectively heated, and an image is perforated on the base paper N for plate making.

In this way, while the plate making operation is performed, the control device 8 controls the wireless communication unit 53 to operate and perform wireless communication with the wireless tag 64 attached to the core body 61 of the master roll 13. To do. First, the control device 8 generates an electromagnetic wave having a predetermined frequency by the antenna of the communication unit 53. When the wireless tag 64 of the master roll 13 mounted on the master roll mounting unit 15 is in a state where communication with the communication unit 53 is possible, the electromagnetic wave emitted from the communication unit 53 is reflected by the wireless tag 64 and reflected electromagnetic waves. Is sent to the communication unit 53.

The communication unit 53 receives the emitted reflected electromagnetic wave, reads information on the base paper N stored in the memory of the wireless tag 64 sent on the reflected electromagnetic wave, and transmits the information to the control device 8.

The control device 8 determines whether the master roll 13 mounted on the master roll mounting unit 15 is based on information such as the manufacturer name, type, size, and plate number among the information about the master roll 13 sent from the communication unit 53. Whether the product is suitable for the stencil printing machine I is determined. When the control device 8 determines that the mounted master roll 13 is a conforming product, other information relating to the base paper N of the master roll 13, for example, the film strength and film thickness of the base paper N, the date of manufacture, and after the plate making Based on information such as the magnitude of the pressing pressure of the pressing roller 12 against the printing drum 11 at the time of printing the first sheet, control is performed so that printing is performed under optimum conditions.

Further, according to the information stored in the memory of the wireless tag 13 sent on the reflected electromagnetic wave, the control device 8 determines that the attached master roll 13 is not a product suitable for the stencil printing machine I. In this case, the master panel 13 displays on the operation panel that the master roll 13 is not compatible with the stencil printing machine I and prompts replacement.

Further, when the electromagnetic wave emitted from the communication unit 53 is not reflected and the reflected electromagnetic wave is not sent, the control device 8 determines that the master roll 13 is not attached to the master roll attachment unit 15 and the operation panel displays the electromagnetic wave. Display to the effect.

Wireless communication is performed between the communication unit 53 and the wireless tag 64 of the master roll 13 during the plate making operation. During this time, the master roll 13 has a casing as the base paper N is pulled out. Rotates within 41. The rotation amount of the master roll 13 depends on the length in the transport direction of the base paper N that is drawn out and wound around the printing drum 11 and the outer diameter of the master roll 13.

Immediately after replacing the master roll 13 with a new one, the outer diameter of the master roll 13 is larger than when the remaining amount is low. As described above, when the outer diameter of the master roll 13 is large, the rotation amount of the master roll 13 is small even when the length of the base paper N drawn from the housing 41 is the same as when the outer diameter is small. Become. Accordingly, the amount of rotation of the core body 61 provided with the wireless tag 64 is also reduced. Immediately after replacing the master roll 13 with a new one, and when making a plate having the shortest conveyance direction length of the base paper N, the rotation amount of the master roll 13 is minimized. In this embodiment, even when the amount of rotation of the master roll 13 is minimized, the master roll 13 is set to rotate in the housing 41 at least approximately one rotation and approximately 360 degrees. At this time, the wireless tag 64 also rotates about 360 degrees about the cylinder center direction G.

The wireless tag 64 and the communication unit 53 have a limited communication range depending on the distance and angle. As shown in FIG. 7, at least 3 minutes of the circumferential length r of the wireless tag 64 within the range of the angle θ at which the wireless tag 64 is within a predetermined distance H with respect to the communication unit 53 and faces each other. If one or more, preferably one-half or more, is included, communication can be performed properly.

However, when the base paper N is pulled out along with the plate making and the core body 61 is rotated in the master roll mounting portion 15, the wireless tag 64 attached to the outside of the core body 61 may depend on the rotation angle of the core body 61. As shown in FIG. 8, the distance Ht between the vertical center part M and the communication unit 53 in a certain posture of the wireless tag 64 exceeds the predetermined distance H.

As described above, when the distance Ht between the wireless tag 64 and the communication unit 53 exceeds the communicable distance H, the reflected electromagnetic wave is not returned from the wireless tag 64 even if the communication unit 53 emits an electromagnetic wave having a predetermined frequency. Then, even if the master roll 13 suitable for the stencil printing machine I is mounted on the master roll mounting section 15, the control device 8 is mounted with the master roll 13 because information about the wireless tag 64 is not transmitted from the communication unit 53. It is judged that it is not.

Further, due to the rotation of the core body 61, the postures of the wireless tag 64 and the communication unit 53 do not face each other. For example, as shown in FIG. 9, the wireless tag 64 and the communication unit 53 are substantially orthogonal and wireless. The angle γ formed by the tangent line Q1 at the center of the major axis Tb extending in the circumferential direction of the tag 64 and the plane U formed by the communication unit 53 may be about 90 degrees. At this time, the wireless tag 64 exists at a position exceeding a predetermined angle θ that allows communication with the communication unit 53, and reflected electromagnetic waves from the wireless tag 64 are less likely to be returned to electromagnetic waves emitted from the communication unit 53. Even in such a case, the control device 8 determines that the master roll 13 is not mounted on the master roll mounting portion 15, and notifies that effect on the operation panel.

Thus, the conductor array pattern of the antenna coils 65a, 65b, and 65c of the wireless tag 64 is formed in a flat shape, and the directions of the major axes Ta and Tb of the flat array pattern are By installing so as to intersect with the tube center direction G, a range in which communication with the communication unit 53 can be performed can be widened. Thus, even when an inexpensive small type wireless tag 64 is used, communication can be performed by appropriately transmitting and receiving electromagnetic waves. Further, even when a low-price type wireless tag 64 having a low communication speed with the communication unit 53 is used, since the communication range is wide, the base paper N is drawn from the master roll 13 during plate making, and the core 61 rotates. The communication unit 53 and the wireless tag 64 face each other, and information can be transmitted and received using a short time when communication is possible.

Further, as shown in FIG. 4, the wireless tag 64 includes a flat antenna coil 65a, 65b, 65c in an arrangement pattern of the short diameters Ua, Ub, the direction V of the long axis Ta, and the direction Q of the long diameters Ta, Tb. Is installed in a direction that is in the circumferential direction of the core body 61, so that the communicable range can be widened, and the wireless tag 64 is inclined at a predetermined angle with respect to the cylinder center direction G as compared with the case where the wireless tag 64 is attached. The process of attaching the wireless tag 64 to the core body 61 can be simplified. And it can attach to the core body 61 still more easily by making the radio | wireless tag 64 into a label type | mold. Furthermore, since the wireless tag 64 is provided on the outer peripheral surface of the core body 61, the manufacturing process can be simplified as compared with the case where the wireless tag 64 is provided in the cylinder of the core body 61.

Further, since the wireless tag 64 is provided at a position separated by a predetermined distance Lt from the central portion E of the core body 61 in the cylinder center direction G of the core body 61, the master roll 13 is mounted on the master roll mounting section 15. In this case, even if the sizes of the base paper N are different, the position of the wireless tag 53 is a position separated from the central portion C in the width direction of the same casing 41 by a predetermined distance Lt. Therefore, by setting the installation position of the communication unit 53 that communicates with the wireless tag 64 to a position that is separated from the central part C in the width direction of the casing installation part 59 of the plate making unit 6 by a predetermined distance Lt, all the different sizes are obtained. It can communicate with the wireless tag 64 of the master roll 13 of the size. Therefore, when the length of the master roll in the cylinder center direction is different, such as when a wireless tag is provided at the end of the master roll in the cylinder core direction and a communication unit that communicates with the wireless tag is installed in the plate making section, There is no need to change the unit installation position to match the size of the master roll. As a result, the plate making unit 6 can be designed and manufactured using common parts, and the production efficiency is improved.

Communication between the communication unit 53 and the wireless tag 64 is properly performed, and the base paper N after the plate making obtained by perforation by the thermal head 14 is rotated by the rotation of the platen roller 27 and the base paper transport roller 30. It is sequentially conveyed downstream. Based on the number of steps of a stepping motor as a drive source for rotationally driving the platen roller 27 and the base paper transport roller 30, the front end of the pre-made base paper N is attached to the clamp 54 that is in the waiting state of the pre-feeding plate. When the control device 8 determines that it has arrived, the clamp 54 is closed by an opening / closing device (not shown), whereby the leading end of the stencil sheet N is clamped by the clamp 54.

Then, by driving the driving device, the printing drum 11 is rotated counterclockwise in FIG. 1, and the stencil sheet N is wound around the outer periphery of the printing drum 11 sequentially from the leading end. When the control device 8 determines that the perforating plate making for one plate of the base paper N has been completed based on the number of steps of the stepping motor, the rotation of the platen roller 27 and the base paper transport roller 30 is stopped, and The end is cut by the cutting tool 28. As a result, the pre-made base paper N is separated from the master roll 13, and the rear end of the base paper N is attached to the printing drum as the printing drum 11 is further rotated.

Thereafter, one sheet P is conveyed from the paper feeding unit 2 to the printing unit 5, and ink is supplied from the inner peripheral surface of the printing drum 11 to the pre-made base paper N on the outer peripheral surface of the printing drum 11. A printing process with a plate is performed in which the base paper N is brought into close contact with the outer peripheral surface.

After the plate printing process is completed, the user confirms the image quality and print image position of the plate printed material, and presses the test print key 94 according to the result, thereby performing appropriate test printing. When the user presses the start key after entering the number of regular prints required by the user using the numeric keypad and pressing the start key, the paper feed roller 31, timing roller 18, printing drum 11, press roller 12, ink roller 10, ink pump, paper discharge The belt 21 and the fan 22 are appropriately driven to perform a printing process. When printing on the set number of sheets 2 is completed, all the steps of the printing operation are completed.

In the first embodiment, the conductor arrangement pattern of the antenna coils 65a, 65b, and 65c is shown as being formed in an elliptical shape, a substantially rectangular shape, and a substantially square spiral shape. The roll is not limited to this, and if the arrangement pattern of the antenna coil is formed in a flat shape and the direction of the major axis of each shape is installed so as to intersect the cylindrical direction G of the core body, other shapes, for example, The shape may be any of a half moon, semi circle, ellipse, trapezoid, rhombus, undecided circle, undecided triangle, undecided quadrangle, or undecided polygon.

Moreover, although the wireless tag 64 is provided on the outer peripheral surface of the core body 61, it may be provided in other locations such as in the cylinder of the core body. In addition, the wireless tag 64 is provided at a position spaced a predetermined distance from the central portion E in the tube center direction G in the tube center direction G of the core body 61, but the arrangement pattern of the conductors of the antenna coil is formed in a flat shape. The wireless tag may be located in another location when the long diameter direction of the flat array pattern intersects with the cylindrical center direction G of the core body.

In addition, although the antenna coils of both the communication unit 53 and the wireless tag 64 have the same size, they may be different. Further, the distance Lt from the central portion C in the width direction of the housing installation portion 59 to the communication unit 53 is the distance to the right end of the communication unit 53 in FIG. 2 and from the central portion E in the cylinder center direction of the core body 61. Although the distance Lt to the wireless tag 64 is shown as the distance to the right end of the wireless tag 64 in FIG. 6, the distance from the central portion in the width direction of the housing installation portion is set to the central portion in the width direction of the communication unit. The distance from the central part of the core in the cylinder center direction may be up to the central part in the width direction of the wireless tag.

In addition, although the antenna coil conductor array pattern is formed in a flat shape, the wireless tag may be provided in a position that is spaced a predetermined distance from the central portion in the tube center direction of the core body. The shape may also be

I stencil printing machine N base paper G cylinder core direction Q major axis direction V minor axis direction 13 master roll 15 master roll mounting portion 53 communication units 61, 61a, 61b, 61c core bodies 64, 64a, 64b, 64c wireless tag 65a, 65b, 65c Antenna coil

Claims (7)

A cylindrical core, and a base paper for stencil printing wound around the core;
Provided with a wireless tag that is provided in the core and performs wireless communication with a communication unit installed in a plate making apparatus of a stencil printing machine,
The wireless tag includes an antenna coil,
The antenna coil conductor array pattern is formed in a flat shape,
The wireless tag is a master roll that is installed so that the direction of the long diameter of the flat array pattern intersects the cylindrical direction of the core. The master tag according to claim 1, wherein the wireless tag has an antenna coil conductor array pattern formed in a substantially rectangular spiral shape. The wireless tag is a master roll according to claim 1 or 2, wherein the wireless tag is installed in a direction in which the direction of the minor axis of the conductor coil array pattern is the cylindrical direction. The wireless tag has an antenna coil conductor array pattern formed in a substantially square spiral shape,
2. The master roll according to claim 1, wherein the two opposing sides of the substantially square are installed so as to intersect with a cylindrical center direction of the core body. The master tag according to any one of claims 1 to 4, wherein the wireless tag is provided on an outer peripheral surface of the core body. A cylindrical core, and a base paper for stencil printing wound around the core;
Provided with a wireless tag that is provided in the core and performs wireless communication with a communication unit installed in a plate making apparatus of a stencil printing machine,
The wireless tag is provided at a position spaced a predetermined distance from a central portion in the tube core direction in the tube core direction of the core body. A master roll mounting portion for mounting the master roll according to any one of claims 1 to 6,
A stencil printing machine having a plate making apparatus including a communication unit that communicates with a wireless tag provided on the master roll.

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