JP2019048462A - Plate-making device, stencil printing machine and master roll - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of parts and a master roll capable of properly communicating with a communication unit by a wireless tag even when a base paper is pulled out from a master roll during plate making and the core body rotates accordingly. To provide a stencil printing machine that is easy to manufacture and manage. SOLUTION: A master roll is provided on a tubular core body 61, a base paper for stencil printing wound around the core body 61, and a core body 61, and is installed in a plate making apparatus of a stencil printing machine. The wireless tag includes a wireless tag that performs wireless communication with the communication unit, the wireless tag includes an antenna coil 65a, the conductor arrangement pattern of the antenna coil 65a is formed in a flat shape, and the wireless tag is described. The direction of the major axis of the flat arrangement pattern is installed so as to intersect the tubular center direction G of the core body 61. [Selection diagram] Fig. 5

Description

  The present invention relates to a plate making apparatus, a stencil printing machine and a master roll.

2. Description of the Related Art Conventionally, in a stencil printing machine, there is known a technology in which a wireless tag is attached to a consumable master roll and communication can be made between a communication unit provided on the stencil printing machine side and a wireless tag of the master roll. Patent Document 1 below discloses that, in such a stencil printing machine, a wireless tag is attached to the core of a master roll.

JP 2002-321433 A

There are multiple types of master roll sizes, such as A3, B4, and legal. When the wireless tag is provided at the end of the core of the master roll 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 complicates manufacture and management.

The present invention solves the above-described problems, and an object of the present invention is to provide a stencil printing machine which can be easily manufactured and managed by suppressing the number of parts.

  In order to achieve the above object, a plate-making apparatus according to the present invention comprises a cylindrical core body, stencil sheet for stencil printing wound around the core body, and a wireless tag provided on the core body. A master roll mounting unit for mounting the provided master roll, and a communication unit installed at a position separated by a predetermined distance from the widthwise center of the master roll mounting unit and performing wireless communication with the wireless tag The master roll mounting unit is a plate making apparatus, and when a plurality of types of master rolls of different sizes are mounted, the central portion in the cylinder center direction of the core of each master roll is the width direction central portion of the master roll mounting unit. The communication unit faces the wireless tag provided at the same position by a plurality of types of master rolls different in size in the distance from the center of the core in the cylinder center direction. It is location.

In the stencil printing machine according to the present invention, a master core provided with a cylindrical core body, stencil sheet for stencil printing wound around the core body, and a wireless tag provided on the core body A stencil printing machine comprising: a master roll mounting unit to be mounted; and a communication unit installed at a position separated by a predetermined distance from a widthwise center of the master roll mounting unit and performing wireless communication with the wireless tag. When the master roll mounting portion is mounted with a plurality of types of master rolls of different sizes, the center portion in the cylinder center direction of the core of each master roll is mounted in alignment with the width direction center portion of the master roll mounting portion The communication unit may be disposed such that the distance from the central portion in the cylinder center direction of the core body is opposed to the wireless tag provided at the same position by the plurality of types of master rolls having different sizes.

The master roll according to the present invention is provided on a cylindrical core body, stencil sheet for stencil printing wound around the core body, and the core body, and the width of the master roll mounting portion of the plate making apparatus A wireless tag for performing wireless communication with a communication unit installed at a position separated by a predetermined distance from the central portion of the direction; and the wireless tag has different lengths in which a plurality of types of base paper having different sizes are wound A plurality of types of cores are respectively provided, and the distance from the center portion in the cylinder center direction of the cores is a position of the same predetermined distance among the plurality of types of cores having different lengths, and mounted on the master roll mounting portion, A master roll provided at an opposite position of the communication unit.

According to the plate making apparatus of the present invention, when the master roll mounting portion mounts a plurality of types of master rolls having different sizes, the central portion of the core body of each master roll in the cylinder center direction has the width of the master roll mounting portion. The communication unit can be mounted according to the central portion of the direction, and the communication unit is disposed opposite to the wireless tag provided at the same position by the plurality of types of master rolls having different sizes from each other in the distance from the central portion of the core in the cylinder center direction. Therefore, even if the size of the master roll is different, there is no need to change the installation position of the communication unit, the number of parts can be reduced, and the manufacture and management of the plate making apparatus become easy.

Further, in the stencil printing machine according to the present invention, when the master roll mounting portion mounts a plurality of types of master rolls having different sizes, the central portion of the core body of each master roll in the cylinder center direction The communication unit can be mounted according to the widthwise center portion, and the communication unit faces the wireless tag provided at the same position by a plurality of types of master rolls different in size from the center portion in the cylinder center direction of the core body. Since it is arranged, it is not necessary to change the installation position of the communication unit even if the size of the master roll is different, the number of parts of the stencil printing machine can be reduced, and the manufacture and management of the stencil printing machine become easy.

Further, in the master roll according to the present invention, the wireless tag is provided on each of a plurality of types of core bodies of different lengths in which a plurality of types of base paper of different sizes are wound, The distance is a position of the same predetermined distance between a plurality of types of cores having different lengths, and is provided at the opposing position of the communication unit when mounted on the master roll mounting portion, so that communication is performed even if the size of the master roll is different. There is no need to change the installation position of the unit, the number of parts of the stencil printing machine can be reduced, and the manufacture and management of the stencil making machine can be facilitated.

1 is a schematic view of a stencil printing machine according to an embodiment of the present invention. It is a perspective view of the master roll mounting part of the said stencil printing machine, a plate-like member, and a communication unit. It is a perspective view in the state where a master roll was equipped with a master roll mounting part of the above-mentioned stencil printing machine. It is a figure which shows the wireless tag provided in the said master roll. It is a figure which shows the reference example of a master roll. It is a figure which shows the master roll concerning other embodiment of this invention. It is a usage aspect figure of the said master roll. It is a usage aspect figure of the said master roll. It is a usage aspect figure of the said master roll.

Hereinafter, embodiments of the present invention will be described based on the drawings. FIG. 1 is a schematic view of a stencil printing machine. As shown in FIG. 1, the printer body 1 is provided with a sheet feeding unit 2 at the rear end, a sheet discharging unit 3 at the front end, and an image reading unit 4 on the upper side. A printing unit 5 is provided in a generally middle portion in the front-rear direction in the printing press body 1, a plate making unit 6 is provided on the upper rear side of the printing unit 5, and a plate discharge unit 7 on the upper front side of the printing unit 5. Is provided.

A sheet feeding roller 31 and a separating plate 32 are disposed at the front end of the sheet feeding unit 2 so that the printing sheets P stacked on the sheet feeding table 33 can be fed 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 tray 23, and the paper P on the paper discharge belt 21 is attracted to the paper discharge belt 21 by the fan 22. It is designed to discharge up.

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

The printing unit 5 includes a printing unit 25, a pressure roller 12, and a timing roller 18. The printing unit 25 includes the printing drum 11. The printing drum 11 winds the prefabricated base sheet N sent from the plate making section 6 around the outer peripheral surface. There are multiple sizes of base paper N wound around the outer peripheral surface of the printing drum 11 for A3, B4 and legal etc. Holes for ink supply (not shown) in the range according to the sizes of various base papers N The printing drum 11 formed on the circumferential surface is mounted to the printing press body 1 and used. The screen 38 is wound and fixed outside the formation area of the ink passage holes.

The printing drum 11 is set to a circumferential length around which the base paper N for A3, for example, which is the largest among various sizes of base paper N can be wound, and the diameter of the printing drum 11 is set to a length corresponding to the circumferential length. Ru. Further, the axial length of the printing drum 11 is also set to a length corresponding to the width dimension of the base sheet N of the maximum size. From this, even if the size of the base paper N wound around the printing drum 11 is different and the formation area of the ink passage holes formed on the circumferential surface of the printing drum 11 and the winding range of the screen 38 are different, the printing drum The same diameter of 11 is used regardless of the size of the base paper N. Then, the contact with the lower pressure roller 12 is maintained in the same state.

As described above, 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. As in the case where the original size of the printed matter to be printed is A3 and A4, if it is possible to make a plate using the base paper N having the same length in the width direction of the master roll 13 used, One stencil printing machine by attaching and detaching the printing drum for A3 and the printing drum for A4 which are different in the formation area of the hole for ink passage and the winding range of the screen 38 to / from the printing machine main body 1 Two sizes can be printed using I.

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

In addition, a clamp 54 extending in the left-right direction is provided at a predetermined position of the peripheral wall of the printing drum 11. The clamp 54 clamps the end of the base sheet N after plate making. The end of the base sheet N after plate making is fixed by the clamp 54 and is wound around the screen 38 as the printing drum 11 rotates.

The pressure roller 12 is opposed to the printing drum 11 so as to be in pressure contact with the printing drum 11 from below, and is vertically movable. A pair of timing rollers 18 is disposed in the vicinity of the rear of the printing unit 5. The timing roller 18 is rotated at an appropriate timing in synchronization with the drive of the printing drum 11 to feed the printing sheet 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. The thermal head 14 perforates the original sheet N fed out from the master roll 13 based on the image data generated by the image reading unit 4 to make a plate. A platen roller 27 is disposed to face the thermal head 14. Further, on the downstream side of the platen roller 27, a cutting tool 28 and an original sheet conveyance roller 30 are disposed in the plate making section 6. The cutting tool 28 is a rotary blade and is reciprocally driven by a rotary blade motor in a direction transverse to the plate-making paper transport path.

FIG. 2 shows a perspective view of the master roll mounting unit 15, the plate member 57 and the communication unit 53. As shown in FIG. FIG. 3 shows a state in which the master roll 13 is mounted on the master roll mounting unit 15. The housing 41 includes a front plate 42, a back plate 43, a bottom plate 44, and a side plate 45 as shown in FIG. Further, as shown in FIG. 3, the master roll 13 is inserted from above into the housing 41, and the base paper N is pulled 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 case setting portion 59 of the plate making portion 6, and the master roll 13 abuts against the front plate 42 and is stopped even if the base paper N is pulled forward.

The rear plate 43, the bottom plate 44 and the side plate 45 are integrally formed, and at the rear of both ends in the width direction of the bottom plate 44, a downwardly projecting protrusion 47 is formed. The projecting portion 47 is inserted into a longitudinally extending groove 58 formed in the plate-like member 57 opposed to the bottom plate 44 below the bottom plate 44 and locks the rear end portion of the elastic body 48 formed of a coil spring. The front end portion of the elastic body 48 is engaged with the lower end of the front plate 42 in the width direction, and the rear plate 43, the bottom plate 44 and the pair of side plates 45 are biased forward.

This is because the rear plate 43 presses the master roll 13 against the front plate 42 even if the base paper N remaining amount of the master roll 13 in the housing 41 decreases and the roll diameter decreases, and the master roll 13 in the housing 41 It is a configuration for stabilizing the posture of Therefore, it is of course possible to replace the elastic body 48 with a coil spring and use means for biasing the rear plate 43 forward with an appropriate pressing force. 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 integrally moved 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 arrangement consisting of the base plate 44 and the side plate 45 is sufficiently heavy and gravity-sliding forward. The inclination may be used below the bottom plate 44, or by providing the inclination on the back surface of the back plate 43 and pushing the back plate 43 forward with a roller of sufficient weight to fall along the inclination. The configuration of can be adopted.

Alternatively, only the back plate 43 may be configured separately and only the back plate 43 may be moved. The movement of these movable bodies should be as smooth as possible, and the rotation of the master roll 13 in the housing 41 will also be smooth, and the pressure on the rear plate 43 will be moderate so that the friction will be small. It should be done. Further, in order to prevent the rising of the master roll 13, it is preferable that the friction in the contact with the rear plate 43 be larger than the friction in the contact with the master roll 13 and the front plate 42. For example, the inner surface of the rear plate 43 may be coated with a material that increases the coefficient of friction, a rubber sheet may be attached, or the inner surface of the front plate 42 may be coated with a fluorine resin so as to reduce friction.

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

The forward and backward movement of the integral rear configuration described above is guided by fitting the slider 51 projecting downward from the bottom plate 44 to the guide shaft 50 extending rearward from the lower end of the front plate 42. The installation position of the guide shaft 50 and the slider 51 in the width direction is a position shifted from the center of the housing 41 in the width direction. FIG. 2 shows the case where the guide shaft 50 and the slider 51 are displaced to the right as viewed from the rear by a distance Lg from the widthwise central portion C of the housing 41 and the housing installation portion 59.

In the vicinity of both widthwise end edges of the bottom plate 44, a pair of support convex portions 60 are provided. The support convex portion 60 is formed in a hemispherical shape. The top of the spherical surface of the supporting convex portion 60 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 at a point. By supporting the housing 41 at a point by the support convex portion 60, it is possible to reduce the frictional resistance when the housing 41 slides back and forth with respect to the plate-like member 41, and it is possible to suppress the generation of noise. is there. Then, by shifting the installation positions of the guide shaft 50 and the slider 51 from the widthwise central portion C, the support convex portion 60 supports the supporting point at a point while slightly displacing the fulcrum of the housing 41 from the widthwise central portion C. The housing 41 in the housing setting 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 width direction central portion C of the housing 41, the bottom plate 45 A shaped opening 52 is formed. Below the opening 52, a communication unit 53 for communicating with the wireless tag 64 provided on the master roll 13 is provided. The communication unit 53 performs wireless communication with the wireless tag 64 to transmit and receive necessary information when the master roll 13 is attached to the master roll attachment unit 15.

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

In the master roll 13 mounted on the master roll mounting unit 15, a stencil sheet N having a predetermined length is wound around a cylindrical core body 61. The length in the cylinder center direction G of the master roll 13 is different for each of various base paper sizes. A wireless tag 64 is provided on the outer peripheral surface of the core body 61 and inside 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 communicating with the communication unit 53, a rectifier circuit for obtaining power from a carrier wave sent from the communication unit 53, and the like. The memory includes the type of master roll 13, the manufacturer's name, the size, the number of plates, the length of base paper N, the film strength and film thickness of base paper N, the date of manufacture, and printing of the first sheet after platemaking 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 at this time is stored.

The communication unit 53 and the antenna of 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. When a voltage is applied to the antenna coil by the communication unit 53, a magnetic field generated around the coil generates a voltage in 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 the information in the memory of the wireless tag 64, transmits the read information to the control device 8, and Write the information received from the wireless tag 64 to the wireless tag 64.

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. Moreover, it is preferable to use a label type in that the wireless tag 64 can be easily attached to the core body 61. The arrangement pattern of the conductors of the antenna coil of the wireless tag 64 has a flat shape.

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

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

On the other hand, in the wireless tag 64c shown in FIG. 4C, the arrangement pattern of the conductors 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 opposing sides a and c or b and d of the substantially square, It is installed in a direction intersecting the cylinder center direction G of the core body 61. The crossing angle between two opposing sides a and c or b and d of the substantially square and the cylinder center direction G is not 0 degrees, that is, the directions K1 or K2 of the opposing sides a and c, or b and d are core The crossing angle may be freely set in a range larger than 0 degree and smaller than 180 degrees unless it is parallel to the cylinder center direction G of the body 61. As an example in FIG. 5B, the substantially square wireless tag 64c is such that the direction K2 along the two opposing sides b and d of the antenna coil 65c intersects the cylinder center direction G of the core 61 at an angle β Indicates the case of installation. And FIG.5 (b) has shown the case where angle (beta) is 60 degree | times.

It is preferable to use what was formed in the substantially rectangular spiral shape shown in FIG.4 (b) as the arrangement pattern of the conductor of an antenna coil. When the array pattern of the antenna coil 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 of the cylinder center G and the major axis Tb is in the cylinder center G It is preferable to install in the orthogonal direction.

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

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

In FIG. 6, the distance Lt between the central portion E in the cylinder center direction of the core bodies 61a, 61b, 61c and the right end J of the flat wireless tags 64a, 64b, 64c is the largest of 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 small size master roll 13 in the cylinder center direction to one end. And it is preferable to set it as about 1⁄5 to 4⁄5 of the distance Ld from the center part E in the cylinder center direction of the core body 61c to one end. From this, the side of the guide shaft 50 installation position below the housing 41 can be used as the installation space of the communication unit 53.

The housing 41 has a size corresponding to the size of the base paper of the mounted master roll 13. Therefore, there are a plurality of types of lengths in the width direction of the housing 41 according to the size of the base paper. When the casings 41 of various sizes are installed, the casing of the plate making unit 6 is not installed by aligning one end of the casing 41 in the width direction with the end of the casing installation portion 59. The widthwise central portion of the housing 41 is aligned with the central portion C in the width direction of the installation portion 59 as a reference.

In the plate-like member 57 installed below the housing 41, when the length in the width direction of the housing 41 is different depending on the size of the base paper, the position of the protrusion 47 in the width direction is also different. The formation positions of the grooves 58 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 widthwise lengths of the casings 41 of a plurality of sizes is used. FIG. 2 shows a case 41 in which is mounted the master roll 13 on which the base sheet N for A3 with the largest base sheet size is wound. And in FIG. 2, the protrusion part 47 is penetrated by the groove | channel 58a of the outermost side among several groove | channel 58a, 58b, 58c of the plate-shaped member 57. As shown in FIG.

Thus, by forming the plurality of grooves 58 in the plate-like member 57, the plate-like member 57 can be commonly used even if the sizes of the housings 41 are different, and common to a plurality of types of stencil printing machine I By using parts, the number of parts can be reduced as a whole.

The plate discharge unit 7 includes a pull-in roller 16 and a take-up roller 17, etc. The used original sheet N mounted on the printing drum 11 is removed, drawn into the plate discharge unit 7 by the pull-in roller 16, and wound as a plate discharge roll. It is supposed to take.

Sheet sensors 66 are installed at a plurality of locations in the sheet conveyance path S from the sheet supply table 33 of the sheet supply unit 2 to the sheet discharge table 23 of the sheet discharge unit 3, and the conveyance state of the sheet P is detected at any time and monitored. Ru.

The stencil printer I comprises a control unit 8. The control device 8 includes a CPU (central processing unit), an I / O (input / output) port, a ROM (read only memory), a RAM (read / write memory), a timer, etc. A microcomputer having a configuration connected by a signal bus is provided. The control device 8 is provided in a control board arrangement portion 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 the operation panel (not shown), detection signals from various sensors, and operation programs and related data called from the ROM. Have. Further, the control device 8 has a function of controlling an image reading operation of a document, a plate making operation, a plate discharging operation, a sheet feeding operation, a sheet discharging operation, a printing operation, a counting operation, and a liquid crystal display unit of an operation panel.

In the ROM, an operation program of the whole stencil printing machine I, necessary relational data, and the like are stored in advance, and the operation program is called by the CPU as appropriate. The RAM has a function of temporarily storing the calculation result of the CPU, a function of optionally storing data signals set and input from various keys on the operation panel and various sensors, and the like, and the like. .

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 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 and write information to the wireless tag 64, the communication unit 53 instructs the control device 8 to Then, it reads and writes information on the wireless tag 64.

The operation of the stencil printer I will be described below. When a document is set in the image reading unit 4 and the plate making key 83 is pressed, an image reading process is first performed. 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 performed, and the used base paper N wound around the outer periphery of the printing drum 11 is separated from the printing drum 11 by the drawing roller 16 and taken up and collected by the winding roller 17.

A platemaking 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 unit 15, the many heat generating elements of the thermal head 14 generate heat selectively, and the image is perforated in the base paper N and made.

As described above, while the plate making operation is being performed, the control device 8 operates the communication unit 53 to perform wireless communication with the wireless tag 64 attached to the core 61 of the master roll 13. Do. First, the control device 8 causes the antenna of the communication unit 53 to generate an electromagnetic wave of a predetermined frequency. When the wireless tag 64 of the master roll 13 attached to the master roll attachment unit 15 is in a state capable of communicating with the communication unit 53, the electromagnetic wave emitted from the communication unit 53 is reflected by the wireless tag 64 and the reflected electromagnetic wave Is emitted toward the communication unit 53 in reverse.

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

The control device 8 is configured such that the master roll 13 mounted on the master roll mounting unit 15 is based on the information on the manufacturer name, type, size, version number, etc. among the information on the master roll 13 sent from the communication unit 53. , It is determined whether the product is compatible with the stencil printing machine I. If the control device 8 determines that the mounted master roll 13 is a compatible product, other information on the base paper N of the master roll 13 such as film strength and film thickness of the base paper N, date of manufacture, after plate making Based on the 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 to print under the optimum condition.

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 mounted master roll 13 is not a product compatible with the stencil printing machine I. In this case, the operation panel displays that the master roll 13 is not a suitable product for the stencil printing machine I and that the replacement is urged.

Furthermore, 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 Display the message.

The 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 which the master roll 13 is encased as the base paper N is pulled out. Rotate within 41 The amount of rotation of the master roll 13 corresponds to the length in the conveyance direction of the base paper N drawn and wound around the printing drum 11 and the size of 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 becomes small. As described above, when the outer diameter of the master roll 13 is large, the amount of rotation of the master roll 13 is small even if the length of the base paper N drawn out of the housing 41 is the same as when the outer diameter is small. Become. Therefore, the amount of rotation of the core 61 provided with the wireless tag 64 also decreases. Immediately after replacing the master roll 13 with a new one, and when plate making is performed with a size in which the length in the transport direction of the base paper N is the shortest, the amount of rotation of the master roll 13 is minimized. In the present embodiment, even when the amount of rotation of the master roll 13 as described above is minimized, the master roll 13 is set to rotate at least approximately one rotation, about 360 degrees, in the housing 41. At this time, the wireless tag 64 also rotates about 360 degrees around 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 three minutes of the circumferential length r of the wireless tag 64 within the range of the predetermined distance H with respect to the communication unit 53 and within the range of the angle θ where the two face each other. If one or more, preferably one half or more of the above are included, communication can be properly performed.

However, when the base paper N is pulled out along with the plate making and the core 61 is rotated in the master roll mounting unit 15, the wireless tag 64 attached to the outside of the core 61 depends on the rotation angle of the core 61. As shown in FIG. 8, the distance Ht between the communication unit 53 and the central part M in the vertical direction in the posture in which the wireless tag 64 is present is separated by more than 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 of a predetermined frequency. Then, even if the master roll 13 compatible with the stencil printing machine I is mounted on the master roll mounting unit 15, the control device 8 is mounted on the master roll 13 because the information on the wireless tag 64 is not transmitted from the communication unit 53. I will not judge.

Further, due to the rotation of the core 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 to each other. An angle γ between the tangent Q1 at the central portion on the long diameter Tb side extending in the circumferential direction of the tag 64 and the plane U formed by the communication unit 53 may be around 90 degrees. At this time, the wireless tag 64 exists at a position exceeding the predetermined angle θ at which communication with the communication unit 53 is possible, and it becomes difficult for the wireless tag 64 to return the reflected electromagnetic wave to the electromagnetic wave 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 unit 15, and the control panel 8 notifies that by the operation panel.

Therefore, the arrangement pattern of the conductors of the antenna coils 65a, 65b and 65c of the wireless tag 64 is formed in a flat shape, and the direction of the major diameters Ta and Tb of the flat shape array pattern is the core 61 By arranging so as to intersect the cylinder center direction G, the communicable range with the communication unit 53 can be widened. Thus, even in the case of using an inexpensive small type wireless tag 64, it is possible to transmit and receive electromagnetic waves properly and communicate. In addition, even when using a low price type wireless tag 64 with a low communication speed with the communication unit 53, since the communicable range is wide, the base paper N is pulled out from the master roll 13 at the time of plate making, and the core 61 rotates. The information can be transmitted and received using a short time when the communication unit 53 and the wireless tag 64 face each other and communication becomes possible.

Further, as shown in FIG. 4, in the wireless tag 64, the direction V of the minor axes Ua and Ub of the array pattern of the flat antenna coils 65a, 65b and 65c is the cylinder center direction G, and the direction Q for the major axes Ta and Tb. By installing in the direction in which the core 61 is in the circumferential direction, it is possible to widen the communicable range, and in comparison with the case where the wireless tag 64 is attached at a predetermined angle with respect to the cylinder center direction G. The process of attaching the wireless tag 64 to the core body 61 can be simplified. And by making the wireless tag 64 into a label type, it can be attached to the core 61 more easily. Furthermore, since the wireless tag 64 is provided on the outer peripheral surface of the core 61, the manufacturing process can be simplified as compared to the case where the wireless tag 64 is provided in the cylinder of the core 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 portion 15. At this time, even if the size of the base paper N is different, the position of the wireless tag 53 is a position separated from the central portion C in the width direction of the same housing 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 separated by a predetermined distance Lt from the widthwise central portion C of the housing installation unit 59 of the plate making unit 6, all the sizes are different. It can communicate with the wireless tag 64 of the master roll 13 of the size. Therefore, when the wireless tag is provided at the end of the master roll in the cylinder center direction, and the communication unit for communicating with the wireless tag is installed in the plate making unit, when the length of the master roll in the cylinder center is different, There is no need to change the installation position of the unit to the size of the master roll. This makes it possible to design and manufacture using common parts in the plate making section 6, and the production efficiency is improved.

Communication between the communication unit 53 and the wireless tag 64 is properly performed, and the stencil sheet N obtained by perforation is performed by the thermal head 14 is rotated by the rotation of the platen roller 27 and the stencil conveyance roller 30. It is sequentially transported downstream. Based on the number of steps of the stepping motor as a driving source for driving the platen roller 27 and the base paper transport roller 30 to rotate, the front end of the prefabricated base paper N is held by the clamp 54 in the plate supply standby state where it is expanded. When the control device 8 determines that it has arrived, the clamp 54 is closed by an opening / closing device (not shown), whereby the front end portion of the stencil sheet N is clamped by the clamp 54.

Then, the printing drum 11 is rotated counterclockwise in FIG. 1 by the drive of the drive device, and the prefabricated original paper N is wound around the printing drum 11 sequentially from the leading end. If the control device 8 determines that perforating of the original sheet N for one plate has been completed based on the number of steps of the stepping motor, etc., the rotation of the platen roller 27 and the original sheet conveying roller 30 is stopped. The end is cut by the cutting tool 28. As a result, the prefabricated base sheet N is separated from the master roll 13 and the rear end of the base sheet N is attached to the printing drum as the printing drum 11 further rotates.

Thereafter, one sheet of paper 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 prefabricated base paper N on the outer peripheral surface of the printing drum 11. A plate-attached printing process is performed in which the base paper N is brought into close contact with the outer peripheral surface of the sheet.

After the end of the printing process with a plate, the user confirms the image quality of the printed matter with a plate and the position of the printed image, and presses the test print key 94 a necessary amount according to the result, and performs appropriate test printing. Then, if the number of regular printed sheets required by the user is entered using the numeric keypad and the start key is pressed, the paper feed roller 31, timing roller 18, print drum 11, press roller 12, ink roller 10, ink pump, paper discharge The belt 21 and the fan 22 are appropriately driven to perform the printing process. When printing of the set number of sheets on the sheet 2 is completed, all steps of the printing operation are completed.

In the first embodiment, the arrangement pattern of the conductors of the antenna coils 65a, 65b, 65c is formed in an elliptical, substantially rectangular or 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 installed so that the direction of the major axis of each shape intersects the cylinder center direction G of the core, other shapes, for example The shape may be a half moon, a semicircle, an oval, a trapezoid, a rhombus, an unformed circle, an unformed triangle, an unformed square, or an unformed polygon.

Moreover, although the wireless tag 64 was provided on the outer peripheral surface of the core 61, it may be provided in other places such as in a cylinder of the core. Further, the wireless tag 64 is provided at a position separated by a predetermined distance from the central portion E in the axial direction of the core 61 in the axial direction G of the core 61, but the arrangement pattern of the conductors of the antenna coil is formed in a flat shape The wireless tag may be at another location when the direction of the major axis of the flat array pattern intersects the direction of the cylinder center G of the core.

Further, although the sizes of the antenna coils of both the communication unit 53 and the wireless tag 64 are set to the same degree, they may be different. Further, the distance Lt from the widthwise central portion C 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. The distance Lt to the wireless tag 64 is shown as the distance to the right end in FIG. 6 of the wireless tag 64, but the distance from the center in the width direction of the housing installation portion is the center in the width direction of the communication unit The distance from the central portion in the cylinder center direction of the core body may be up to the central portion in the width direction of the wireless tag.

In addition, although the arrangement pattern of the conductors of the antenna coil is formed in a flat shape, the wireless tag may be arranged at a predetermined distance from the center in the cylinder center direction in the cylinder center direction of the core. It may be in the form of

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

Claims (3)

A master roll mounting unit for mounting a master roll having a cylindrical core body, stencil sheet for stencil printing wound around the core body, and a wireless tag provided on the core body;
A plate making apparatus comprising: a communication unit installed at a position separated by a predetermined distance from a widthwise central portion of the master roll mounting unit and performing wireless communication with the wireless tag;
When the master roll mounting portion is mounted with a plurality of types of master rolls of different sizes, the center portion in the cylinder center direction of the core of each master roll can be mounted in alignment with the width direction center portion of the master roll mounting portion Yes,
The plate-making apparatus is characterized in that, in the communication unit, the distance from the center portion in the cylinder center direction of the core body is opposed to the wireless tag provided at the same position by the plurality of types of master rolls different in size. A master roll mounting unit for mounting a master roll having a cylindrical core body, stencil sheet for stencil printing wound around the core body, and a wireless tag provided on the core body;
A stencil printing machine comprising: a communication unit installed at a position separated by a predetermined distance from a widthwise central portion of the master roll mounting unit and performing wireless communication with the wireless tag;
When the master roll mounting portion is mounted with a plurality of types of master rolls of different sizes, the center portion in the cylinder center direction of the core of each master roll can be mounted in alignment with the width direction center portion of the master roll mounting portion Yes,
The stencil printing machine according to claim 1, wherein the communication unit is disposed such that the distance from the center of the core in the cylinder center direction is opposed to the wireless tag provided at the same position by the plurality of types of master rolls having different sizes. . A cylindrical core body, and stencil sheet for stencil printing wound around the core body;
A wireless tag provided on the core and performing wireless communication with a communication unit installed at a position separated by a predetermined distance from a widthwise central portion of a master roll mounting unit of a plate making apparatus;
The wireless tag is provided on each of a plurality of types of core bodies having different lengths in which a plurality of types of base paper having different sizes are wound,
The distance from the center portion in the cylinder center direction of the core body is a position of the same predetermined distance among the plurality of types of core bodies having different lengths,
A master roll provided at a position opposite to the communication unit when mounted on a master roll mounting portion.

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