TWI542479B - Printing method and printing apparatus for long strip - Google Patents

Description

Long strip body printing method and printing device

The present invention relates to a printing method and a printing apparatus for printing a long strip-shaped body such as a fastener tape such as a fastener tape of a slide fastener of a printed matter using a one-way type printer.

In the past, as a printer for printing a long strip-shaped body such as a sliding fastener or a surface fastener, as disclosed in Patent Document 1, it is present in a plurality of strips arranged in parallel with each other. A printing device including a print head of each inkjet nozzle portion of the inkjet printer is disposed in a direction orthogonal to the conveyance direction. The ink jet printer is called a multi-pass method, and ejects ink from the respective ink jet nozzles to the surface of the strip-shaped strip, and the print head reciprocates in the direction of the surface of the strip-shaped strip, and is in the longitudinal direction. The strip-shaped strip is intermittently driven to perform the desired printing in the longitudinal direction.

In the printing apparatus of this aspect, the tension applying portion is provided on the upstream side and the downstream side in the conveying direction of the long strip-shaped body, and the tension applying portion applies tension to each of the elongated strip-shaped bodies that are intermittently driven, and includes a strip for making a strip The ribbon is rolled up and wound up smoothly. The dancer roller is moved up and down by the excess length of the elongated strip, and a detector for detecting the margin of the long strip is detected by detecting the position of the dancer roller.

On the other hand, as disclosed in Patent Document 2, there is a single-pass type ink jet printer in which a determinant head pair formed with a plurality of ejection ports arranged in a direction orthogonal to the conveying direction is placed on a conveyor belt. The transported recording medium ejects ink to perform image recording. In particular, in the field of industrial use, the one-way method with high speed and excellent productivity The printer is attracting attention. When multi-color printing is performed by a one-way inkjet printer, the inkjet nozzles of the respective colors are arranged in the transport direction, and a time difference is set in the transport direction of the recording medium to eject ink at a specific position, thereby performing a large amount of ink. Color printing.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2000-7199

[Patent Document 2] Japanese Patent Laid-Open Publication No. 2009-285854

In the multi-pass type ink jet printer disclosed in Patent Document 1, since the series of print heads are reciprocated in a direction orthogonal to the feed direction, a plurality of strip-shaped bodies that are stopped facing each other are printed, and therefore, Printing is performed by intermittently driving a long strip-shaped body, and it is difficult to cause a positional shift or a color deviation due to expansion or contraction of a long strip-shaped body as a printed matter, but there is a problem that the printing speed is slow. Therefore, it is considered that the one-way method capable of high-speed printing is applied to the ink jet printer disclosed in Patent Document 1, but the tension applying portion of the ink jet printer of Patent Document 1 is not in the conveyance of the long strip-shaped body. The mechanism for adjusting the tension to a fixed tension by the dancer roller cannot be used directly in the single-pass printer.

Further, the one-way type printer disclosed in Patent Document 2 is formed by forming a image on a recording medium stably placed on a conveyor belt, and is a narrow-width stretchable fabric such as a zipper tape or a ribbon fabric. The long strip-shaped body is difficult to be placed on the conveyor belt and is stably supplied, so that it cannot be applied. In particular, when an image formation of a stretchable cloth surface or the like is performed by an ink jet printer, if the single-pass method is used, the tension of the printed article of the long strip-shaped body changes due to the conveyance of the printed matter. With the expansion and contraction, the point of the ink ejected from the ink jet nozzle does not fall to the desired position, so that the image is deformed or a color deviation occurs.

The present invention has been made in view of the above prior art, and an object thereof is to provide a long-lasting image that can be formed without a deformation or color deviation at a high speed by using a one-pass printer. Strip printing method and printing device.

The present invention relates to a printing method of a long strip-shaped body, which is a one-way type printer which arranges a plurality of printing units in a strip shape as a printed matter by a plurality of printing units. Moving the direction and operating the printing unit in accordance with the conveying speed of the long strip-shaped body, and performing required printing on the surface of the long strip-shaped body; and transporting the long strip-shaped body at a fixed speed. And detecting a change in tension of the long strip-shaped body at two upstream and downstream sides in the transport direction of the printing unit, and controlling the transport speed of the long strip-shaped body at two upstream and downstream sides in the transport direction of the printing unit The surface is controlled such that the tension and speed of the long strip-shaped body conveyed by the printer are fixed.

The elongate strip-shaped body is conveyed at a constant speed by a constant-speed driving roller in the vicinity of the upstream side of the printing unit, and the conveying speed control on the upstream side in the conveying direction of the printing unit is controlled by the upstream side of the constant-speed driving roller. The transport speed of the strip strip.

Moreover, the present invention relates to a printing apparatus for a long strip-shaped body, comprising: a single-pass type printing machine provided with a plurality of printing units arranged in a conveying direction of a long strip-shaped body of a printed matter, and The surface of the strip-shaped strip is subjected to printing as required; a constant-speed driving roller that transports the long strip-shaped body at a fixed speed; and a fixed-speed motor that rotates the fixed-speed driving roller at a constant speed; a member that detects a change in tension of the long strip-shaped body at two upstream and downstream sides in a transport direction of the printing unit; and a speed control roller that detects the upstream side and the downstream side in a transport direction of the printing unit The speed of the strip-shaped strip is controlled to control the tension change of the strip-shaped strip; and the tension of the strip-shaped strip conveyed at a fixed speed to the printer is fixed, and The surface of the above strip-shaped strip is subjected to specific printing.

The constant speed driving roller is disposed in the vicinity of the upstream side of the printing unit, and the conveying speed of the long strip-shaped body is set on the upstream side of the constant speed driving roller. Degree control roller.

The tension change detecting member has a dancer roller which is wound around the elongated strip-shaped body and is movable up and down by the tension of the elongated strip-shaped body. The bounce roller shaft is supported at one end of the arm member that can be oscillated in the vertical direction, and the other end portion of the arm member is fixed with a vertical, and the arm member is designed to move the bounce roller up and down in a substantially vertical direction. The way is shaking. Further, the tension change detecting member includes a rotary encoder provided at a swing center of the arm member.

The speed control roller and the constant speed drive roller are provided with a pressing roller that presses the long strip-shaped body against the speed control roller and the constant speed driving roller.

The printer is an inkjet printer, and the printing unit includes an inkjet nozzle unit. Alternatively, the printer may be a laser printer, and the printing unit may be provided with a photosensitive drum.

The printing method and the printing apparatus of the long strip-shaped body of the present invention can perform accurate printing without positional deviation or color deviation at a high speed by a single-pass type printer even for a long-length printed matter such as a cloth. . Thereby, beautiful printing can be efficiently performed on the long printed matter.

10‧‧‧Long strip printing device

12‧‧‧Inkjet printer

14‧‧‧ zipper tape

15‧‧‧ sprocket

16‧‧‧Printing

18‧‧‧Printing unit

20‧‧‧ cloth feeding device

24, 60‧‧‧ speed control roller

25, 41‧‧‧ Press roller

26, 52‧‧‧Bounce rollers

28, 64‧‧‧Control motor

30, 54‧‧‧ arm members

32, 56‧‧‧Rotary axis

33, 57‧‧‧ Rotary encoder

34, 58‧‧‧ plumb

40‧‧‧ fixed speed drive roller

42‧‧‧ fixed speed motor

44, 48‧‧‧ steering rolls

46‧‧‧Transition guide surface

50‧‧‧Base Department

Fig. 1 is a schematic front view showing a printing apparatus of a long strip-shaped body according to an embodiment of the present invention.

Fig. 2 is a schematic view showing a one-pass type printer of the long strip-shaped body of the embodiment.

Fig. 3 is a flow chart showing a printing method of the strip-shaped strip of the embodiment.

Hereinafter, embodiments of the present invention will be described based on the drawings. The printing apparatus 10 of the strip-shaped strip of the present embodiment is a zipper tape of a slide fastener of a long strip by a single-pass type inkjet printer 12 (an example of the printer 12). 14 (long strip 14 One of the examples) performs the printing of the desired image on the surface. In the inkjet printer 12, a plurality of printing units 18 of the respective colors are arranged in the conveying direction of the fastener tape 14, and each printing unit 18 is provided with an ink for ejecting the same color in the width direction of the fastener tape 14. A plurality of ink portions, ink jet nozzle portions, and the like are shown. Each of the printing units 18 of the ink jet printer 12 is on a horizontal plane, and is slightly separated from the plane to convey the fastener tape 14.

The zipper tape 14 is sent to the tape feeding device 20 via a guide roller or the like in a state where the fastener element 15 is closed, and is sent to the dancer roller as the tension change detecting member via the speed control roller 24 via the guide roller or the like. 26. The speed control roller 24 is rotationally driven by controlling the motor 28 to control the feed speed of the fastener tape 14. The control of the control motor 28 is performed by the output of the control inverter (not shown) according to the position of the dancer roller 26 by the following control method. The speed control roller 24 is provided with a pressing roller 25 for pressing the fastener tape 14 to prevent slippage at a position opposite to the surface of the roller.

The dancer roller 26 is axially supported at the front end of the arm member 30 as a tension change detecting member which is rocked in the vertical direction, and is provided as a rotary shaft 32 which can be attached to the center portion of the arm member 30 by a position slightly further from the dancer roller 26 Rotate. A rotary encoder 33 as a tension change detecting member for detecting the rocking angle of the arm member 30 is attached to the rotary shaft 32. A vertical portion 34 is attached to the other end portion of the arm member 30, and the arm member 30 is adjusted so as to be balanced in a horizontal state, so that the arm member 30 can be easily shaken.

The zipper tape 14 that has passed through the dancer roller 26 is fed upward and is wound by the fixed speed drive roller 40. The constant speed drive roller 40 is fixedly driven by the constant speed motor 42 at a feed speed. The pressing roller 41 that presses the fastener tape 14 to prevent slippage so that the feeding becomes reliable is pressably located opposite the roller surface of the constant speed driving roller 40.

The zipper tape 14 that has passed through the fixed speed driving roller 40 is turned to the horizontal direction via the steering roller 44, and is sent to the lower side of the inkjet printer 12. Immediately below the ink jet printer 12, the insertion space of the zipper tape 14 is vacated, and a travel guide surface 46 for guiding the zipper tape 14 to the horizontal position is provided. The transition guiding surface 46 is disposed on the base portion 50 of the printing device 10 of the elongated strip-shaped body Above the surface.

The base unit 50 is provided with a speed control roller 24, a pressing roller 25, and a control motor 28, and the rotating shaft 32 of the arm member 30 is also pivotally held at a specific position. Further, the constant speed drive roller 40 and the fixed speed motor 42 are also disposed above the base portion 50.

The zipper tape 14 that has passed through the traveling guide surface 46 is sent to the dancer roller 52 as a tension change detecting member located in the vertical direction via the steering roller 48. Similarly to the upstream side dancer roller 26, the dancer roller 52 is axially supported at the front end of the arm member 54 as a tension change detecting member which is rocked in the vertical direction, and is provided to be slightly larger than the dancer roller 52 by the center portion of the arm member 54. The rotating shaft 56 in the far position rotates. A rotary encoder 57 as a tension change detecting member that detects the rocking angle of the arm member 54 is attached to the rotating shaft 56. At the other end of the arm member 54, a vertical projection 58 is attached, and the arm member 54 is adjusted so as to be balanced in a horizontal state, so that the swing of the arm member 54 is facilitated.

The zipper tape 14 that has passed through the dancer roller 52 is sent to the upper side in the vertical direction, and is sent to the next step by the speed control roller 60. The speed control roller 60 is rotationally driven by a control motor 64 controlled by an inverter to control the feed speed of the fastener tape 14. The control of the control motor 64 is performed by the output of the control inverter (not shown) in accordance with the position of the dancer roller 52 by the following control method.

The speed control roller 60 and the control motor 64 are also fixed above the base portion 50, and the arm member 54 of the dancer roller 52 is also pivotally supported at a specific position below the base portion 50.

Next, the operation of the long strip-shaped printing apparatus 10 of the present embodiment will be described based on the flowchart of FIG. First, the fastener tape 14 is placed on a specific path as described above from the steering roller 22 of the loading unit of the printing apparatus 10 to the dancer roller 62 of the carrying-out unit. Then, when the conveyance of the fastener tape 14 is started by a control device (not shown), the fixed speed motor 42 is rotated at a fixed speed, for example, a tape feed amount of 15 m/min, so that the fixed speed drive roller 40 is fixed at a constant speed. Rotate (s11). Along with this, the control motors 28, 64 are also driven, and the speed control rollers 24, 60 are at the same speed as the fixed speed drive roller 40, for example, the tape feed amount is 15 m/min. Rotate (s12a, s12b).

In this state, the dancer roller 26 slightly moves up and down by the fluctuation or the expansion and contraction of the feed length of the fastener tape 14 itself according to the fluctuation of the load on the upstream side. Since the zipper tape 14 is a long strip of cloth, the change or the expansion and contraction of the feed length of the zipper tape 14 is caused by the change in the tension caused by the driving force applied to the zipper tape 14, or the upstream side. A little involved in the generation of shift resistance. If the expansion and contraction is present, the length of the tape fed by the constant speed drive roller substantially changes. Therefore, the pattern printed by the ink jet printer 12 is finally deformed, or the ink jets of the respective ink jet nozzle portions from the different printing units 18 which are to be ejected at the same position are generated in a positional shift, in a plurality of colors. The synthesized portion produces a color deviation.

Therefore, in the printing apparatus 10 of the strip-shaped strip of the present embodiment, in order to suppress the expansion and contraction, the positional shift and color deviation of the pattern are not generated, and the motors 28 and 64 are controlled based on the positional information of the dancer rollers 26 and 52. The drive is controlled to finely adjust the rotational speed of the speed control rollers 24, 60. In order to perform the fine adjustment, the positional information of the dancer rollers 26, 52 is detected by the rotary encoders 33, 57 as the rocking angles of the arm members 30, 54. The output of the rotary encoders 33, 57 sets the position of the arm members 30, 54 horizontally as the initial state neutral position.

In the state of the fixed speed transport of the zipper tape 14, the dancer roller 26 in the loading portion of the strip-shaped printing device 10 moves upward as the horizontal position of the arm member 30, and is self-rotating coded as angle information. The device 33 outputs, for example, a value of a positive rocking angle. This state is caused by an increase in the tension applied to the zipper tape 14, because the rotational speed of the speed control roller 24 is slow relative to the fixed speed driving roller 40, or the zipper tape 14 is pulled on the upstream side to increase the direction. For example, the rotation of the control motor 28 is controlled in such a manner that the feed amount of the zipper tape 14 becomes faster than 15 m/min. On the other hand, in a state where the dancer roller 26 moves downward relative to the horizontal position of the arm member 30, as the angle information, the value of the negative rocking angle is output from the rotary encoder 33, for example. This state is generated after the tension applied to the zipper tape 14 is reduced, and the original Since the rotational speed of the speed control roller 24 is faster than the constant speed drive roller 40, or the rapid return of the zipper tape 14 on the upstream side, the feed rate in the deceleration direction, for example, the zipper tape 14, becomes slow. The rotation of the control motor 28 is controlled in a manner of 15 m/min (s13a). Thereby, the speed of the control motor 28 is adjusted to return the dancer roller 26 to the neutral position. In addition, in a steady state, the expansion and contraction of the fastener tape 14 is suppressed, and the rotation is performed at a constant speed (s14a).

Further, in the state in which the zipper tape 14 is conveyed at a constant speed, the dancer 52 of the carry-out portion moves upward as compared with the horizontal position of the arm member 54 as the angle information, and the self-rotating encoder 57 is used as the angle information. The value of the positive shaking angle is output, for example. This state is caused by an increase in the tension applied to the fastener tape 14, because the rotational speed of the speed control roller 60 is faster than that of the fixed speed driving roller 40, or the zipper tape 14 is pulled on the upstream side to decelerate the direction. For example, the rotation of the control motor 64 is controlled in such a manner that the feed amount of the zipper tape 14 becomes slower than 15 m/min. On the other hand, in a state where the dancer roller 52 moves downward relative to the horizontal position of the arm member 54, as the angle information, the value of the negative rocking angle is output from the rotary encoder 57, for example. This state is caused by the decrease in the tension applied to the fastener tape 14, because the rotational speed of the speed control roller 60 is slow relative to the fixed speed driving roller 40, or the rapid velocity of the upstream side fastener tape 14 is involved. Returning, the rotation of the control motor 64 is controlled in such a manner that the direction of the increase, for example, the feed amount of the fastener tape 14 becomes faster than 15 m/min (s13b). Thereby, the control motor 64 rotates at a constant speed in a state where the expansion and contraction of the fastener tape 14 is suppressed by the speed adjustment (s14b).

With the above, the zipper tape 14 between the dancer rollers 26, 52 between the speed control rollers 24, 60 driven by the control motors 28, 64 does not cause a change in tension and the expansion and contraction of the zipper tape 14 is suppressed. We carry for the minimum.

By the zipper tape 14 being conveyed at a fixed speed and without expansion and contraction, in the single-pass type inkjet printer 12, the ink jet nozzle portions of the respective printing units 18 arranged in the transport direction of the fastener tape 14 can be Zipper cloth that is transported at a fixed speed, for example, 15 m/min The tape 14 forms a pattern by accurately ejecting ink at a specific position based on the specific timing calculated from the interval between the printing units 18 and the transport speed of the fastener tape 14.

According to the printing apparatus 10 and the printing method of the strip-shaped strip of the present embodiment, it is possible to perform accurate printing at a high speed by a single pass method using the ink jet printer 12 even for a long strip-like body such as a cloth or the like. The printing by the ink jet printer 12 can be performed beautifully and efficiently on the long strip of the zipper tape 14. The dancer rollers 26, 52 for detecting the tension of the zipper tape 14 are disposed on the arm members 30, 54 which are freely movable, and the projections 34, 58 are provided at the opposite ends of the dancer rollers 26, 52 of the arm members 30, 54. One of the dead weights of the dancer rollers 26, 52 is eliminated, and the arm members 30, 54 are extremely sensitive to rocking in response to the tension variation of the zipper tape 14. Thereby, the tension applied to the fastener tape 14 can be accurately detected and feedback can be performed, and correct control with good responsiveness can be performed. Further, by adjusting the load or position of the verticals 34 and 58 of the respective dancer rollers 26 and 52, it is possible to adjust the optimum tension according to the strips of various materials and widths having different degrees of expansion and contraction.

Furthermore, the printing method and printing apparatus of the strip-shaped strip of the present invention are not limited to the above-described embodiments, and a single-pass type printer can be used as a laser printer, in addition to an ink jet printer. Alternatively, the long strip-shaped body may be a long strip of a ribbon or a tape other than the zipper tape, and may be suitably used as long as it is a strip-shaped long strip. The movement mode of the dancer roller is not limited to the shaking of the arm member, and the dancer roller can be moved up and down within a specific range. The position of the constant-speed driving roller is also preferably the position of the above embodiment in terms of stability of the speed, but may be the downstream side of the printer.

12‧‧‧Inkjet printer

14‧‧‧ zipper tape

18‧‧‧Printing unit

20‧‧‧ cloth feeding device

24, 60‧‧‧ speed control roller

25, 41‧‧‧ Press roller

26, 52‧‧‧Bounce rollers

28, 64‧‧‧Control motor

30, 54‧‧‧ arm members

32, 56‧‧‧Rotary axis

33, 57‧‧‧ Rotary encoder

34, 58‧‧‧ plumb

40‧‧‧ fixed speed drive roller

42‧‧‧ fixed speed motor

44, 48‧‧‧ steering rolls

46‧‧‧Transition guide surface

50‧‧‧Base Department

Claims (15)

A printing method of a long strip-shaped body, which is a one-way type printer (12), which is arranged by arranging a plurality of printing units (18) as a printed matter. The transport direction of the long strip-shaped body (14) is such that the printing unit (18) operates in accordance with the transport speed of the long strip-shaped body (14), and the elongated strip-shaped body (14) Printing (16) required for surface preparation; characterized in that the long strip-shaped body (14) is conveyed at a fixed speed, and the strip is detected at two upstream and downstream sides in the transport direction of the printing unit (18) The tension of the strip (14) is changed, and the transport speed of the strip-shaped strip (14) is controlled at both the upstream side and the downstream side in the transport direction of the printing unit (18) to face the printer (12). The tension and speed of the long strip-shaped body (14) to be conveyed are controlled so as to be fixed. The printing method of the strip-shaped strip of claim 1, wherein the strip-shaped body (14) is conveyed at a constant speed by a constant-speed driving roller (40) near the upstream side of the printing unit (18), the printing The conveying speed control on the upstream side in the conveying direction of the unit (18) controls the conveying speed of the long strip-shaped body (14) on the upstream side of the constant-speed driving roller (40). A method of printing a strip-shaped strip of claim 1 or 2, wherein said printer (12) is an ink jet printer, and said printing unit (18) is provided with an ink jet nozzle portion. A printing method of the strip-shaped strip of claim 1 or 2, wherein said printer (12) is a laser printer, and said printing unit (18) is provided with a photosensitive drum. A printing apparatus for a long strip-shaped body, comprising: a single-pass type printer (12) provided with a plurality of printing units arranged in a conveying direction of a long strip-shaped body (14) of a printed matter (18), performing the required printing on the surface of the strip (14) (16); a constant speed driving roller (40) that conveys the long strip-shaped body (14) at a fixed speed; a fixed speed motor (42) that rotates the constant speed driving roller (40) at a constant speed; and a tension change detecting member ( 26, 30, 33, 52, 54, 57) detecting the change in tension of the elongated strip-shaped body (14) at two upstream and downstream sides in the transport direction of the printing unit (18); and a speed control roller ( 24, 60), controlling the tension of the elongated strip-shaped body (14) based on the speed of the elongated strip-shaped body (14) detected at the upstream side and the downstream side in the transport direction of the printing unit (18) Changing; and controlling the tension of the long strip-shaped body (14) conveyed at a fixed speed to the printer (12) to be fixed, and specificizing the surface of the long strip-shaped body (14) Printing (16). The printing apparatus of the strip-shaped strip of claim 5, wherein the constant-speed driving roller (40) is disposed in the vicinity of the upstream side of the printing unit (18), and is disposed on the upstream side of the constant-speed driving roller (40). There is a speed control roller (24) for controlling the conveying speed of the above-mentioned strip-shaped strip (14). The printing apparatus of the strip-shaped strip of claim 5, wherein the tension change detecting member has a dancer roller (26, 52), and the dancer roller (26, 52) is wound with the elongated strip (14) And can be moved up and down by the tension of the strip-shaped strip (14). The printing apparatus of the strip-shaped strip of claim 6, wherein the tension change detecting member has a dancer roller (26, 52), and the dancer roller (26, 52) is wound with the elongated strip (14) And can be moved up and down by the tension of the strip-shaped strip (14). The printing apparatus of the strip-shaped body of claim 7, wherein the dancer roller (26, 52) is pivotally supported at one end of the arm member (30, 54) which is vertically movable, in the arm member (30, The other end of the 54) is fixed with a vertical (34, 58), and the arm members (30, 54) are provided so as to be able to move the dancer rollers (26, 52) up and down in a substantially vertical direction. The printing apparatus of the strip-shaped strip of claim 8, wherein the dancer roller (26, 52) is pivotally supported at one end of the arm member (30, 54) that can be rocked in the vertical direction, and the arm member (30, The other end of the 54) is fixed with a vertical (34, 58), and the arm members (30, 54) are provided so as to be able to move the dancer rollers (26, 52) up and down in a substantially vertical direction. A printing apparatus for a strip-shaped strip according to claim 9, wherein the tension change detecting member includes a rotary encoder (33, 57) provided at a rocking center of the arm member (30, 54). The printing apparatus of the strip-shaped body of claim 10, wherein the tension change detecting member includes a rotary encoder (33, 57) provided at a rocking center of the arm member (30, 54). The printing apparatus of the strip-shaped strip of claim 5, wherein the speed control roller (24) and the constant speed driving roller (40) are provided to press the elongated strip-shaped body (14) against the speed The pressing roller (24) and the pressing roller (25, 41) of the above-described constant speed driving roller (40) are controlled. A printing apparatus for a strip-shaped strip according to any one of claims 5 to 13, wherein said printer (12) is an ink jet printer, and said printing unit (18) is provided with an ink jet nozzle portion. A printing apparatus for a strip-shaped strip according to any one of claims 5 to 13, wherein said printer (12) is a laser printer, and said printing unit (18) is provided with a photosensitive drum.