CN109808300B

CN109808300B - Composite printing device

Info

Publication number: CN109808300B
Application number: CN201810076559.0A
Authority: CN
Inventors: 一之濑孝一; 松下俊宏
Original assignee: Toshin Kogyo Co Ltd
Current assignee: Toshin Kogyo Co Ltd
Priority date: 2017-11-21
Filing date: 2018-01-26
Publication date: 2022-02-25
Anticipated expiration: 2038-01-26
Also published as: CN207789997U; JP6925622B2; CN109808300A; JP2019093609A

Abstract

The problem to be solved by the present invention is to print a pattern with high precision in a composite printing apparatus having a plateless printing portion and a plateless printing portion, and the composite printing apparatus includes: a conveyor belt for supporting and conveying the cloth; a plateless printing part which is arranged on a conveying path of the cloth and is provided with a measuring device for measuring the linear moving distance of the conveying belt; a plateless printing part arranged at the downstream position of the plateless printing part on the cloth conveying path; and a control unit that stops the movement of the conveyor belt to intermittently operate the conveyor belt every time the measuring device measures a linear movement distance corresponding to a printing pitch (L1) of the plateless printing unit. The plateless printing portion prints marks (M) at intervals corresponding to a printing pitch (L2) of the plateless printing portion, and the plateless printing portion includes: and a printing plate position adjusting mechanism for moving the position of the printing plate according to the displacement of the printing plate relative to the mark when the printing part of the cloth printed by the plateless printing part is conveyed.

Description

Composite printing device

Technical Field

The present invention relates to a composite printing apparatus, and more particularly, to a composite printing apparatus which performs printing on a fabric by a plateless printing portion and printing on a fabric by a plateless printing portion in parallel.

Background

Conventionally, as a method of printing on a fabric, there are plate printing and plateless printing. Plate printing is also called screen printing, and is a printing method using a printing plate having a screen. A through hole (opening) corresponding to a predetermined pattern is formed in the screen, ink is supplied to the screen, and the squeegee is moved (slid) on the printing plate while pressing the ink, whereby the ink is allowed to penetrate through the through hole to print the predetermined pattern on the cloth. The printing plate is made in accordance with the color of each ink used.

In the plate printing, since a large area of the cloth corresponding to the size of the through-hole of the printing plate can be printed in the same color by one movement of the squeegee, the plate printing is suitable for printing a background of a monochromatic pattern and the like, and can perform high-speed printing. On the other hand, since it is necessary to form a printing plate for each ink color, it takes time and cost, and it is difficult to perform multicolor representation of a pattern.

The plateless printing is a printing method in which ink is directly ejected onto a cloth without using a printing plate, and for example, there is printing using an ink jet head. The ink jet head includes ink tanks for storing inks of respective colors and nozzles connected to the ink tanks, and ejects the inks from the nozzles to print on a fabric. In the non-plate printing, for example, inks of colors called as printing colors such as cyan, magenta, yellow, and black are superimposed by adding shading, and thus, a plurality of colors can be expressed and a fine and complicated pattern can be expressed as compared with the plate printing. However, printing by ejecting ink onto a cloth has a problem that only a small area can be printed at one time, which takes time to print, as compared with the printing with a plate.

In order to solve the above problem, patent document 1 proposes a printing apparatus combining plate printing and plateless printing. The printing device of patent document 1 includes: the printing apparatus includes a conveying section for continuously conveying a long cloth, a printing section having a printing plate, and a non-printing section by a conveyor belt, and a mark for position adjustment is provided on the conveyor belt. The cloth is conveyed by the conveyor belt, printed by the platemaking portion, conveyed again, and printed by the plateless printing portion. Thus, a pattern printed with a plate and a pattern printed without a plate are printed on the cloth. In this case, a pattern such as a background having a small number of colors and a large area occupied by one color is printed by the plateless printing portion, and a fine pattern having a large number of colors is printed by the plateless printing portion, whereby multicolor expression can be performed on the printed pattern, and the printing speed is increased as compared with the case of performing only plateless printing, thereby making it possible to compensate for the disadvantages of plateless printing and plateless printing.

In order to print a pattern by both the plate printing and the plateless printing, it is necessary to align the printing position of the pattern by the plate printing with the printing position of the pattern by the plateless printing. In the printing apparatus of reference 1, a plurality of position adjustment marks are provided on a conveyor belt. In a plate printing unit that performs printing first, a mark having the same shape as a position adjustment mark provided on a conveyor is provided on a printing plate, and the position adjustment mark provided on the conveyor is aligned with the mark on the printing plate to continuously print a pattern.

The plateless printing part is provided with: a position confirmation sensor that detects a position of the position adjustment mark; and a position adjusting mechanism for adjusting the position of the ink nozzle according to the position of the mark, and printing the pattern by combining the position of the mark for position adjustment.

Documents of the prior art

Patent document

Patent document 1: japanese patent No. 3218274

Disclosure of Invention

Problems to be solved by the invention

However, in the case of the printing apparatus described in reference 1, it is not clear how the position adjustment marks of the belt are aligned with the marks of the printing plate in the plate printing unit where printing is performed first. For example, when the conveyor is controlled by a drive motor such as a servomotor to align the position adjustment mark provided on the cloth or the conveyor with the printing plate, a conveyance error of about ± 0.2mm may occur due to a slight expansion and contraction of the conveyor formed of an elastic body such as urethane rubber or a core of a drive roller on which the conveyor is mounted during conveyance.

In this way, in the plateed printing section, since the accuracy of alignment between the position adjustment mark and the printing plate is low, when the pattern passes through the plateed printing section continuously from the printing section a1-1 (fig. 14A) of the pattern to be printed on the plate as shown in fig. 14, the printing section a1-2 of the subsequent pattern overlaps the printing section a1-1 of the previous pattern (fig. 14B), and a gap may be left between the subsequent printing section a1-3 and the printing section a1-2 (fig. 14C). After the completion of the plate printing, the plateless printing is further performed in conjunction with the position adjustment mark A3, but since the printing portion a1-2 of the pattern printed by the plate printing is displaced from the position adjustment mark A3, the position of the printing portion a2 of the pattern printed by the plateless printing is displaced from the printing portion a1-2 of the pattern printed by the plate printing (fig. 14D), and the pattern cannot be accurately printed, which results in a problem of poor printing accuracy.

The present invention has been made in view of the above problems, and an object of the present invention is to enable printing of a printing portion by plateless printing and a printing portion by plateless printing with high accuracy in a composite printing apparatus including a plateless printing portion and a plateless printing portion.

Means for solving the problems

The composite printing apparatus provided by the present invention includes: a conveyor belt for supporting and conveying a cloth to be printed on an upper surface; a plateless printing part which is arranged on a cloth conveying path performed by the conveyor belt and is provided with a measuring device for measuring the linear moving distance of the conveyor belt; a plateless printing portion provided downstream of the plateless printing portion on a cloth conveying path; and a control unit that stops the movement of the conveyor belt to intermittently operate the conveyor belt every time the measuring device measures the linear movement distance corresponding to the printing pitch of the plateless printing unit, wherein the plateless printing unit prints marks at intervals corresponding to the printing pitch of the plateless printing unit, and the plateed printing unit includes a plate position adjusting mechanism that moves a position of the plate according to an amount of displacement of the plate with respect to the marks when a printed portion of the cloth completed by the plateless printing unit is conveyed.

First, a pattern is printed by a plateless printing unit (hereinafter also referred to as "plateless printing"). In this case, the plateless printing portion prints marks at intervals corresponding to the printing pitch of the plateless printing portion. In the plateless printing portion, the straight-line moving distance of the conveyor belt is measured by the measuring device, so that the conveyor belt moves accurately by a distance corresponding to the printing pitch of the plateless printing portion, and therefore, in the plateless printing portion, the printing portion printed first and the printing portion printed next do not overlap or leave a gap, but print accurately at intervals corresponding to the printing pitch, and print marks accurately at intervals corresponding to the printing pitch of the plateless printing portion. Next, the cloth is conveyed to the plateed printing portion by the conveyor belt, and the pattern is printed by the plateed printing portion (hereinafter also referred to as "plateed printing"), but before printing, the position of the printing plate is moved by the plate position adjusting mechanism in accordance with the amount of displacement of the printing plate with respect to the mark, so that the mark and the printing plate are aligned, and therefore, the printing portion of the plateed printing portion is not displaced with respect to the printing portion of the plateless printing portion. Therefore, the printing portion by the plateless printing and the printing portion by the plateless printing can be printed with high accuracy.

In a preferred embodiment, the indicia is printed on the surface of the cloth or the belt.

According to one embodiment, the plate position adjustment mechanism comprises: a sensor that detects the amount of misalignment of the printing plate with respect to the marks; and a printing plate moving mechanism that moves the printing plate by a distance corresponding to the amount of misalignment of the printing plate detected by the sensor.

According to one embodiment, the sensor is a two-dimensional CCD camera provided integrally with the printing plate of the plateable printing portion.

Preferably, the printing plate moving mechanism moves the printing plate in an X direction along a sequential feeding direction of the cloth and a Y direction orthogonal to the X direction.

In one embodiment, the measurement device comprises: a gripping mechanism portion that grips the conveyor belt at an initial position and follows the conveyor belt; a measuring section that measures a distance by which the gripping mechanism section follows the conveyor belt as the linear movement distance; a return operation mechanism unit that returns the gripping mechanism unit to the initial position; and a control unit that controls each of the gripping mechanism unit and the return operation mechanism unit, wherein the control unit releases the gripping operation performed by the gripping mechanism unit and causes the gripping mechanism unit to perform a return operation to an initial position by the return operation mechanism unit each time the measuring unit measures a distance corresponding to the printing pitch.

The measuring section measures a moving distance of the gripping mechanism section when the gripping mechanism section grips the conveyor belt at an initial position and moves linearly following the movement of the conveyor belt. When the clamping mechanism part moves for a distance corresponding to the printing pitch, the control part stops the action of the conveyor belt, releases the clamping action performed by the clamping mechanism part, and makes the clamping mechanism part perform a returning action to the initial position by the returning action mechanism part.

The printing pitch of the plateless printing portion is preferably an integral multiple of the printing pitch of the plateless printing portion.

Effects of the invention

According to the present invention, a printing portion by plateless printing and a printing portion by plateless printing can be printed with high accuracy.

Drawings

Fig. 1 is a schematic plan view showing an overall configuration of a composite printing apparatus according to an embodiment of the present invention.

Fig. 2 is a schematic side view showing the overall structure of the composite printing apparatus.

Fig. 3 is a schematic plan view showing a main part of the plateless printing portion.

Fig. 4 is a side view of the measuring device.

Fig. 5 is a side view of the measuring device on the opposite side to that of fig. 4.

Fig. 6 is a plan view of the plateed portion.

Fig. 7A is a perspective view of the XY stage, and fig. 7B is an enlarged perspective view of a main portion of the one-way stage.

Fig. 8A and 8B are images acquired by a sensor.

Fig. 9A is a view of a fabric on which a pattern and a mark are printed by a plateless printing portion, and fig. 9B is a view showing the fabric on which a pattern is printed by a plateless printing portion in fig. 9A.

Fig. 10A to 10D are explanatory views showing an operation of the composite printing apparatus.

Fig. 11A is an example of a cloth on which a pattern is printed by plateless printing, fig. 11B is an example of a cloth on which a pattern is printed by plateless printing, and fig. 11C is an example of a cloth on which a pattern printed by plateless printing and a pattern printed by plateless printing are printed.

Fig. 12 is a plan view of a platelike printing portion according to another embodiment.

Fig. 13 is a schematic plan view showing the overall configuration of a composite printing apparatus according to another embodiment.

Fig. 14A to 14C show an example of a cloth on which a pattern is printed by plate printing in a conventional printing apparatus, and fig. 14D shows an example of a cloth on which a pattern printed by plate printing is also printed.

Description of reference numerals:

1 composite printing device

3 plateless printing part

4 having a printing portion

5 control part

22 conveyor belt

33 measuring device

41 clamping mechanism part

42 measuring part

43 return operation mechanism part

60 printing forme

62 printing plate position adjusting mechanism

68 sensor

69 plate moving mechanism

79 XY working table

C cloth of printing object

Printing pitch of L1 plateless printing part

L2 print pitch with plate printing section

M mark

P1 initial position

Amount of misalignment S3

Detailed Description

An embodiment of the composite printing apparatus 1 according to the present invention will be described with reference to the drawings. In the composite printing apparatus 1 of the present invention, the fabric C is conveyed by the conveyor 22, and the pattern is printed on the fabric C by the plateless printing portion 3 (for example, a printing portion E1 shown in fig. 11A). Then, the printing unit 4 prints a pattern corresponding to the printing portion E1 in a region not overlapping with the printing portion E1 of the plateless printing unit 3 of the fabric C (for example, the printing portion E2 shown in fig. 11B). Thus, a pattern constituted by printing by plateless printing and printing by plateless printing (for example, a portion in which the printing portion E1 and the printing portion E2 shown in fig. 11C are combined) is obtained.

In the following description, the direction from left to right in fig. 1 and 2 will be referred to as the direction in which the fabric C is conveyed (also referred to as the "sequential feeding direction" or the "X direction"), the vertical direction in fig. 1 will be referred to as the width direction of the fabric C (also referred to as the "Y direction"), the left side in fig. 1 and 2 will be referred to as the upstream side, and the right side will be referred to as the downstream side. The printing region of the fabric C is a region on which a pattern can be printed, and both ends of the fabric C in the width direction may not be printing regions, or the entire length of the fabric C in the width direction may be printing regions.

(Overall Structure of Complex printing apparatus 1)

As shown in fig. 1 and 2, the composite printing apparatus 1 includes: a cloth conveying part 2 for supporting and conveying a cloth C to be printed on an upper surface; a plateless printing section 3 which is provided on a transport path of the fabric C by the transport belt 22 and prints a pattern with ink ejected from an ink ejection head; a plateed portion 4 which is provided at a position downstream of the plateless portion 3 on the conveyance path of the fabric C and prints a pattern on the fabric C using a printing plate; and a control unit 5 for controlling the operations of the cloth feeding unit 2, the plateful printing unit 4, and the plateless printing unit 3. The control section 5 is incorporated in the operation box 6, and controls the sequential feeding operation of the fabric C by the conveyor 22 for performing, in parallel, printing of the fabric C by the plateless printing section 3 and printing of the printed portion E1 of the fabric C printed by the plateless printing section 3 by the plateless printing section 4.

The material of the fabric C to be printed is not particularly limited, and various fabrics made of natural fibers such as cotton and silk, artificial fibers such as polyester fibers, rayon fibers, and acetate fibers can be printed and printed.

(Structure of cloth conveying part 2)

The cloth conveying section 2 includes: the printing apparatus includes

drive rollers

21 and 21 on the upstream side and the downstream side of the rotational drive, and an endless belt 22 which is stretched between the drive rollers 21 and conveys a cloth C to be printed while supporting it on the upper surface.

The upstream-side drive roller 21 and the downstream-side drive roller 21 are used to intermittently move the conveyor belt 22 by a predetermined distance, and are connected to a drive source (not shown) such as a servo motor. The driving source is controlled by the control unit 5 to perform intermittent driving.

The conveyor belt 22 is made of an elastic body such as urethane rubber, and has an adhesive layer (not shown) provided on the upper surface thereof to support the fabric C. The cloth C is pressed against the belt 22 by an application roller 23 provided on the upstream side of the belt 22.

Although not shown, the cloth conveying unit 2 further includes: a transport roller for transporting the long cloth C wound in a roll shape, a winding roller for winding the cloth C transported by the winding transport belt 22, and the like. The conveyor belt 22 is cleaned by a cleaning device provided on the way of the return from the downstream-side drive roller 21 to the upstream-side drive roller 21, and an adhesive layer is formed on the upper surface by a glue application device.

(Structure of plateless printing section 3)

The plateless printing section 3 of the present embodiment performs ink jet printing called "scanning type", and includes: a head unit 31; a unit moving mechanism 32 for scanning the head unit 31 in the width direction of the fabric C; and a measuring device 33 that measures the linear movement distance of the conveyor belt 22.

As shown in fig. 1 and 3, the head unit 31 includes a plurality of (4 in the present embodiment) ink print heads 34a to 34 d. Each of the printing heads 34a to 34d is provided with a plurality of nozzles (not shown) for ejecting ink onto the fabric C. The printing heads 34a to 34d are filled with ink of colors called, for example, cyan, magenta, yellow, and black printing colors. The number of the ink heads 34a to 34d is not limited to 4, and may be 5 or more, or 3 or less. Further, a print head for thinner which ejects a thinner may be provided. The color of the ink filled in the ink heads 34a to 34d is not limited to the present embodiment.

As shown in fig. 3, the width (length in the transport direction) of the ink ejected from the printing heads 34a to 34d to the fabric C is set as the printing pitch L1 of the plateless printing portion 3. In other words, the plateless printing portion 3 can print the size of the distance of the printing pitch L1 in the conveyance direction by scanning the head unit 31 once in the width direction of the fabric C.

Further, although not shown, the printing heads 34a to 34d are connected to the ink tank via an air removal block, and the ink drawn out from the ink tank is filled into the printing heads 34a to 34d after the air contained in the ink is removed by the air removal block.

A unit moving mechanism 32 is provided, and the unit moving mechanism 32 abuts the head unit 31 and extends in the width direction. The unit moving mechanism 32 is configured to support the head unit 31 by the unit support mechanism 32a and to scan the head unit 31 above the conveyor belt 22 at least from one end to the other end in the width direction of the printing region of the fabric C. As shown in fig. 1, when printing is not performed, the head unit 31 stops at a position further outward in the width direction than the fabric C.

(construction of measuring device 33 of plateless printing section 3)

The measuring device 33 measures the linear movement distance of the conveyor belt 22, which corresponds to the printing pitch L1 of the plateless printing portion 3, of the conveyor belt 22. As shown in fig. 4 and 5, the measuring device 33 includes, on the plate-like body 40: a gripping mechanism portion 41 that grips the conveyor belt 22 at an initial position P1 and follows the conveyor belt 22; a measuring section 42 that measures a distance by which the gripping mechanism section 41 follows the conveyor belt 22 as a linear movement distance; and a return operation mechanism 43 for returning the gripping mechanism to the initial position P1. The measuring device 33 includes a control unit that controls each of the gripping mechanism 41 and the return mechanism 43. In the present embodiment, the control unit of the measuring device 33 is also served by the control unit 5 incorporated in the operation box 6, and is not shown in fig. 4 and 5.

Above the surface of the plate-like body 40 on the conveyor belt 22 side, 2

guide rails

44, 44 are provided at intervals in the vertical direction (the horizontal direction in fig. 4) of the fabric C. A flat plate-shaped support member 45 is attached to the guide rails 44, and the support member 45 is slidable. A slide member 46 is provided at a position of the support member 45 facing the guide rails 44, and a groove having a T-shaped cross section is formed in the slide member 46. By engaging the groove of the slide member 46 with the rail portion of the guide rails 44, 44 having a shape corresponding to the groove, the support member 45 can slide in the conveying direction along the guide rails 44, 44.

The upper end of the support member 45 is mounted with a clamping mechanism portion 41. The clamping mechanism 41 includes two

clamping plates

47a and 47b and a cylinder 48, and the two

clamping plates

47a and 47b are vertically arranged and can clamp the conveyor belt 22. The upper clamp plate 47a is shorter than the lower clamp plate 47b in the length in the conveyance direction, and the upper clamp plate 47a and the lower clamp plate 47b are arranged so as to be aligned at one end side in the conveyance direction. The other end side of the lower surface of the lower clamp plate 47b in the conveyance direction is fixed to the upper end of the support member 45 by a bolt (not shown) or the like, and thus the clamp mechanism 41 can move in the conveyance direction in accordance with the sliding of the support member 45.

A cylinder 48 is attached to one end side of the lower surface of the lower clamp plate 47 b. The screw of the cylinder 48 is inserted through a through hole, not shown, provided in the lower plate, and the tip of the screw of the cylinder 48 is fixed to the upper clamp plate 47a by a bolt 59. In a state where the conveyor belt 22 is not held by the holding mechanism 41, the screw of the cylinder 48 is extended, and the upper holding plate 47a is pushed up in a direction away from the lower holding plate 47 b. In a state where the conveyor belt 22 is held by the holding mechanism 41, the screw of the cylinder 48 is shortened, and the upper plate 47a moves in a direction to approach the lower plate 47b, so that the conveyor belt 22 is held between the two holding

plates

47a, 47 b.

The measuring unit 42 includes a magnetic scale 49 and a detector 50, and the detector 50 is constituted by a magnetic sensor such as a magnetoresistive element capable of reading the magnetic scale 49. The scale 49 is provided below the guide rails 44, 44 and is parallel to the guide rails 44, and a scale is formed on the lower surface of the scale 49 at a pitch of, for example, 10 μm. The detector 50 is attached to a position of the inner surface of the support member 45 facing the scale marks 49, and is movable along the scale marks 49 in accordance with the sliding movement of the support member 45. The detector 50 is connected to the control unit 5 through a cable 51, and sends a pulse signal corresponding to the movement distance to the control unit 5. The measuring section 42 measures a distance corresponding to the printing pitch L1 of the plateless printing section 3. The measuring unit 42 may be configured by a glass scale and an optical sensor capable of reading the glass scale, and may have any configuration as long as it can measure a distance corresponding to the printing pitch L1 of the plateless printing unit 3.

As shown in fig. 5, the return operation mechanism 43 includes: a long hole 52 formed between the two

guide rails

44, 44 of the plate-like body 40 and extending in the conveying direction; a screwless cylinder 53 provided on a surface of the plate-like body 40 on the opposite side to the conveyor belt 22 side in the conveying direction; a protrusion 54 protruding from a slide body 56 of the screwless cylinder 53 into the elongated hole 52; and a protrusion 55 protruding from the support member 45 into the elongated hole 52.

The screwless cylinder 53 includes a cylinder tube 57 between a pair of

side wall portions

53a, 53a arranged in the left-right direction, the cylinder tube 57 accommodates a piston (not shown), and a slider 56 is provided on the outer peripheral surface of the cylinder tube 57, and the slider 56 is slidable along the cylinder tube 57. The piston and the slider 56 move integrally by the magnetic coupling force, and the slider 56 can move following the movement of the piston by moving the piston by air. The tip end of the projection 54 provided on the slider 56 is positioned in the elongated hole 52, and the stopper bolt 58 is attached to the projection 55 of the support member 45.

The operation of the measuring device 33 will be described. In fig. 4, the direction of conveyance of the cloth C is from left to right, and in fig. 5, the direction of conveyance of the cloth C is from right to left. In fig. 4, in the initial state, the support member 45 is located at an initial position P1 at the left end. The return operation mechanism 43, i.e., the slider 56 of the screwless cylinder 53, is located at the right end standby position. The control unit 5 causes the conveyor belt 22 to be held between the holding

plates

47a and 47b of the holding mechanism 41 before the start of conveyance of the conveyor belt 22. Next, when the control section 5 moves the conveyor belt 22 in the conveying direction, the gripping mechanism 41 linearly moves following the conveyor belt 22. At this time, the measuring section 42 measures the distance by which the gripping mechanism section 41 follows the conveyor belt 22 as the linear movement distance. The controller 5 receives the pulse signal indicating the linear movement distance transmitted from the detector 50 of the measuring unit 42, moves the gripping mechanism 41 by a distance corresponding to the printing pitch L1 of the plateless printing unit 3, and stops the conveyance of the conveyance belt 22 when determining that the position reaches the position P2. Next, the control section 5 releases the clamping operation of the conveyor belt 22 by the clamping mechanism 41, and moves the slider 56 of the screwless cylinder 53 to the initial position P1. At this time, in the elongated hole 52, the stopper bolt 58 of the projection 54 of the slider 56 abuts against the projection 55 of the support member 45, and applies a pressing force to the support member 45 to return the support member 45 to the initial position P1. The controller 5 returns the slider 56 of the screwless cylinder 53 to the standby position and returns to the initial state again. By repeating these operations, the measuring device 33 repeatedly measures the linear movement distance corresponding to the printing pitch L1 of the plateless printing portion 3.

(Structure of letterpress printing part 4)

The letterpress printing portion 4 is shown in fig. 6. The printing unit 4 includes: a printing plate 60, a printing unit 61, and a printing plate position adjustment mechanism 62. As shown in fig. 10, the plateable printing portion 4 is disposed so that the printing portion E2 of the fabric C printed by the plateable printing portion 4 is located on the downstream side of the printing portion E1 of the fabric C printed by the plateless printing portion 3 by an integral multiple of the printing pitch L1 of the plateless printing portion 3. Specifically, as shown in fig. 10D, a distance L3 from the downstream end of the printed portion E1 printed by the plateless printing portion 3 to the upstream end of the printed portion E2 printed by the plateless printing portion 4 is a distance which is an integral multiple of the printing pitch L1 of the plateless printing portion 3, and is 3 times in the embodiment shown in fig. 10.

The printing pitch L2 of the plateless printing portion 4 is set to be an integral multiple of the printing pitch L1 of the plateless printing portion 3, and is 4 times in the embodiment shown in fig. 10. In the case where a plurality of plateable portions 4 are provided, the distance L4 between the printing portions E2 of each plateable portion 4 is an integral multiple of the printing pitch L1 of the plateless portion 3, and is 4 times in the embodiment shown in fig. 10, that is, the distance is the same as the printing pitch L2 of the plateable portion 4.

(Structure of printing plate 60)

As shown in fig. 6, a screen (not shown) is attached to the printing plate 60 at the center of a rectangular frame 63. The screen is provided with fine holes corresponding to the pattern printed in the stencil printing portion 4, and the ink passing through the fine holes reaches the fabric C to print a desired pattern on the fabric C. The width (length in the transport direction) of the plateable printing portion 4 at which one printing plate 60 can print on the fabric C is defined as the printing pitch L2 of the plateable printing portion 4.

(Structure of printing unit 61)

As shown in fig. 6, the printing unit 61 includes: two

rail brackets

64, 64 that extend in the width direction of the fabric C across the printing plate 60; connecting

members

64b, 64b that connect the

ends

64a, 64a of the two rail brackets 64, respectively; a pair of

blade carriers

65, 65 that are guided by the

rail brackets

64, 64 and reciprocate in the width direction; a pair of

reciprocating blades

66a, 66b, both ends of which are supported by the blade carriers 65, and which apply pressure of the blades to the screen of the printing plate 60 during reciprocating movement to print on the fabric C; and printing

unit driving sections

67, 67. The printing unit 61 is provided on the carriage 8 of the composite printing apparatus 1.

The printing

unit driving units

67 and 67 include: a timing pulley that is attached to the shafts of the drive motors 67a, and that uses the

drive motors

67a, 67a as drive sources; and a timing belt driven by the timing belt drive, connected to the blade carriers 65, and configured to reciprocate the

blade carriers

65, 65 by the printing

unit drive units

67, 67.

(operation of printing Unit 61)

The printing unit 61 prints a pattern on the fabric C by reciprocating the

blades

66a, 66b in the width direction of the fabric C while injecting ink between the pair of

blades

66a, 66 b. In fig. 6, when the direction from the bottom to the top is taken as the forward moving direction of the

blade carriers

65, 65 and the direction opposite to the forward moving direction is taken as the backward moving direction of the blade carriers 65, the printing plate 60 is first moved upward by a printing plate vertical moving mechanism, not shown, to separate the screen from the fabric C, and ink is injected between the pair of

blades

66a, 66 b. Then, the return-stroke squeegee 66b positioned on the upper side is moved up to be separated from the screen of the printing plate 60, and the forward-stroke squeegee 66a positioned on the lower side is moved down to be slightly brought into contact with the screen. In this state, when the

blade carriers

65 and 65 are moved forward, the ink is pushed into the holes formed in the screen by the forward-movement blade 66 a.

When the

squeegee carriers

65 and 65 move to the end of the screen, the printing plate 60 is moved downward by the plate vertical moving mechanism so that the screen is brought into close contact with the cloth C, the forward stroke squeegee 66a is moved upward and separated from the screen of the printing plate 60, and the return stroke squeegee 66b is moved downward and strongly brought into contact with the screen. In this state, when the

squeegee carriers

65 and 6 are moved backward, the ink pressed into the holes of the screen is moved to the cloth C, and a predetermined pattern is printed.

(printing plate position adjusting mechanism 62)

When the printing portion E1 of the fabric C printed by the plateless printing section 3 is conveyed, the plate position adjusting mechanism 62 moves the position of the printing plate 60 in accordance with the amount of displacement S3 of the printing plate 60 with respect to the mark M printed by the plateless printing section 3.

The plate position adjusting mechanism 62 includes: a sensor 68 that detects the amount of misalignment S3 of the printing plate 60 with respect to the mark M; and a plate moving mechanism 69 that moves the printing plate 60 by a distance corresponding to the misalignment amount S3 of the printing plate 60 detected by the sensor 68.

The plate moving mechanism 69 includes: a bidirectional table 70 provided on the connecting member 64b on one side and connected to one side of the printing plate 60 in the width direction; and a one-way table 71 provided on the other connecting member 64b and connected to the other end of the printing plate 60 in the width direction.

As shown in fig. 7A, the bidirectional table 70 is an XY table that is movable in the X direction along the sequential feeding direction of the cloth C and the Y direction orthogonal to the X direction, respectively. Specifically, the device is provided with: two

guide rails

73, 73 provided on the base 72 at intervals in the Y direction; and a Y table 74 that is slidable on the base 72 along the guide rails 73, 73.

Slide members

74a, 74a are provided on the lower surface of the Y table 74 at positions facing the guide rails 73, and the

slide members

74a, 74a are fitted to the guide rails 73, 73 to be slidable in the Y direction.

A nut member (not shown) is provided on the lower surface of the Y table 74, and a bolt 75 is inserted and screwed into the nut member. A servomotor 76 for rotating the bolt is attached to one end of the bolt 75, and the other end of the bolt 75 is supported by a support member (not shown) provided on the base 72 via a ball bearing. The Y table 74 is moved in the Y direction by rotating the bolt 75 by the servo motor 76.

The Y table 74 includes: two

guide rails

78, 78 provided at intervals in the X direction; and an X table 79 slidable on the Y table 74 along the guide rails 78, 78.

Slide members

79a, 79a are provided on the lower surface of the X table 79 at positions facing the guide rails 78, and the

slide members

79a, 79a are fitted to the guide rails 78, 78 to be slidable in the X direction.

A nut member (not shown) is provided on the lower surface of the X table 79, and a bolt 81 is inserted and screwed into the nut member. A servomotor 82 for rotating the bolt 81 is attached to one end of the bolt 81, and the other end of the bolt 81 is supported by a support member (not shown) provided on the X table 79 via a ball bearing. The screw 81 is rotated by the servo motor 82, and the X table 79 is moved in the X direction. The X table 79 is provided with a connecting portion 84 connected to the frame 63 of the printing plate 60. A cylindrical projection 85 is provided upward on the connecting portion 84 of the X table 79, and the frame 63 and the X table 79 are connected by fitting the projection 85 into a hole 86 provided in the frame 63 in a rotatable manner.

The one-way table 71 provided on the other end side of the frame 63 is movable in the sequential feeding direction of the fabric C, i.e., the X direction. The X table 79 is attached to the base of the one-way table 71, the X table 79 is slidable, and the structure in which the X table 79 slides on the base is the same as the structure in which the X table 79 of the two-way table 70 slides on the Y table 74, and therefore, the description thereof is omitted. As shown in fig. 7(B), a cylindrical projection 88 is provided upward on the connection portion 84 of the X table 79. The frame 63 is provided with a groove 87, and the groove 87 extends in the width direction of the cloth C and has an open end. The frame 63 is coupled with the X table 79 of the one-way table 71 by the projection 88 being movably and rotatably fitted along the groove 87.

The servomotor 82 provided on the bidirectional table 70 and the servomotor 82 provided on the unidirectional table 71 are synchronously driven to move the frame 63 of the printing plate 60 in the X direction. Thereby, the connection portion 84 of the bidirectional table 70 and the connection portion 84 of the unidirectional table 71 apply a pressing force in the X direction to the frame 63, and the frame 63 moves in the X direction.

The servo motor 76 of the bidirectional table 70 is driven to move the frame 63 of the printing plate 60 in the Y direction. Thereby, the connection portion 84 of the bidirectional table 70 applies a pressing force in the Y direction to the frame 63, and the frame 63 moves in the Y direction. At this time, the convex portion 88 of the connecting portion 84 of the one-way table 71 moves along the groove 87 of the frame 63.

When only the servo motor 82 of the one-way table 71 is driven, the frame 63 rotates about the convex portion 85 of the connection portion 84 of the two-way table 70. Further, only the servo motor 82 of the bidirectional table 70 may be driven to rotate the frame 63.

The structure of the printing plate moving mechanism 69 is not limited to the above embodiment, and may be any structure as long as it can move and rotate the printing plate 60.

Sensor 68 is provided integrally with plate 60 on the outer side of plate 60 by a support member 89 extending from connecting portion 84 of reversible table 70. In the present embodiment, the sensor 68 is a two-dimensional CCD camera. As shown in fig. 8A and 8B, when the printed portion E1 of the fabric C printed by the plateless printing portion 3 is transferred to the plateless printing portion 4, the image of the mark M printed on the fabric C by the plateless printing portion 3 enters the image range S acquired by the camera. The position of printing plate 60 during printing is determined with reference to mark M, and plate printing is performed at the position of printing plate 60 when predetermined position S1 (the central portion of image range S in the embodiment of fig. 8A and 8B) determined within image range S matches image position S2 of mark M. Therefore, if the mark M in the camera image range S is displaced from the predetermined position S1, the position of the printing plate 60 relative to the mark M is displaced, and the displacement amount S3 of the printing plate 60 is obtained from the displacement amount of the mark M from the predetermined position S1 of the printing plate 60.

Specifically, the control unit 5 stores the reference image in which the marker M1 is disposed at the predetermined position S1 in advance. When the printing portion E1 of the fabric C printed by the plateless printing portion 3 is transferred to the plateless printing portion 4, the control portion 5 obtains an input image by the sensor 68. The input image is compared with the reference image, and the amount of displacement between the marker M1 of the reference image and the marker M of the input image is determined S3. The amount of misalignment S3 includes: either or both of a case of being displaced on the X-Y plane (displacement amount S3-1) as shown in fig. 8A and a case of being displaced from the reference mark M1 of the reference image (displacement amount S3-2) as shown in fig. 8B. The controller 5 determines an error amount S3, and the error amount S3 includes either one or both of the error amount S3-1 and the error amount S3-2, and controls the

servo motors

76 and 82 based on the error amount S3 to operate the bidirectional table 70 and the unidirectional table 71 to move and rotate the printing plate 60.

The sensor 68 may not be provided at the connecting portion 84 of the reversible table 70, and may be provided at any position as long as the amount of displacement S3 between the mark M and the printing plate 60 can be detected. The shape of the mark M is a right isosceles triangle in the embodiment shown in fig. 8, but may be a polygon such as a quadrangle or a circle, and may be any shape as long as the sensor 68 can recognize the shape.

The sensor 68 is not limited to a two-dimensional CCD camera, and may be any sensor as long as it can detect the amount of displacement S3 between the mark M and the printing plate 60.

(operation of the plateless printing portion 3 and the plateless printing portion 4)

The control section 5 intermittently operates the conveyor 22 in the plateless printing section 3 to perform plateless printing. Specifically, each time the measuring device 33 measures the linear movement distance corresponding to the printing pitch L1 of the plateless printing portion 3, the control portion 5 stops the movement of the conveyor belt 22 and scans the head unit 31 in the width direction of the fabric C to perform plateless printing. At this time, the mark M is printed on the surface of the fabric C by the plateless printing portion 3 at intervals corresponding to the printing pitch L2 of the plateless printing portion 4. In the example shown in fig. 9A, the printing pitch L2 of the plateless printing portion 4 is 5 times the printing pitch L1 of the plateless printing portion 3, and the mark M is printed 1 time for every 5 times of plateless printing.

The position of the print mark M is a region where no pattern is printed at the end of the fabric C in the width direction, and when the fabric C is conveyed to the plate printing unit 4, the position of the mark M can be imaged by the sensor 68 of the plate position adjusting mechanism 62. The position of the printed mark M may be any position of the fabric C as long as the mark M can be imaged by the sensor 68. In addition, the markings M may be printed on the conveyor belt 22.

In the case of the plateless printing, since the moving distance of the belt 22 is measured by the measuring device 33 and the belt 22 is sequentially fed, the printed portions E1 printed by the plateless printing portion 3 are accurately printed at each printing pitch L1 without overlapping or leaving a gap, and the marks M are accurately printed at each printing pitch L2 of the plateless printing portion 4. That is, mark M is not displaced from printing portion E1 of plateless printing unit 3, but is printed at a position corresponding to printing portion E1 with accuracy.

In the plateed printing portion 4, printing is performed with the position of the printing plate 60 aligned with the mark M printed in the plateless printing portion 3. When the printed portion E1 of the fabric C printed by the unprinted portion 3 is conveyed to the printed portion 4, the image of the mark M enters the image area S of the sensor 68. When the predetermined position S1 of the printing plate 60 does not coincide with the position S2 of the mark M and is displaced, the control unit 5 moves the printing plate 60 by the plate moving mechanism 69 by the displacement amount S3 and aligns the printing plate 60 and the mark M so that the displacement amount is 0 on the image acquired by the sensor 68. Thereafter, plate printing is performed. As a result, as shown in fig. 9B, the printing portion E2 by the plate printing portion 4 can be printed without misalignment with respect to the printing portion E1 printed by the plateless printing portion 3.

(printing by the composite printing apparatus 1)

A method of printing a pattern on the fabric C by the composite printing apparatus 1 will be described with reference to fig. 10. In the embodiment of fig. 10, there are 2 plateable portions 4, and the number of the plateable portions 4 may be 3 or more, or 1. In fig. 10, the drive roller 21, the cloth C, the plateless printing portion 3, and the plateless printing portion 4 are simply illustrated, and for convenience of explanation, the width of the plateless printing portion 3 is made the same as the printing pitch L1 of the plateless printing portion 3, and the width of the plateless printing portion 4 is made the same as the printing pitch L2 of the plateless printing portion 4. In fig. 10B to 10D, for explaining the printing order, the printed portions E1, E2, and E3 are shown as being stacked in accordance with the printing order. In practice, however, printed portions E1, E2, E3 were printed on cloth C, and printed portions E1, E2, E3 did not produce overlapping portions. In the embodiment shown in fig. 10, the plateable printing portions 4 are disposed on the downstream side of the plateless printing portion 3 by 3 times the printing pitch L1 of the plateless printing portion 3, the printing pitch L2 of the plateable printing portions 4 is 4 times the printing pitch L1 of the plateless printing portion 3, and the distance between the printing portions E2 printed by the first and second plateable printing portions 4 is 4 times the printing pitch L1 of the plateless printing portion 3.

When the composite printing apparatus 1 starts printing the fabric C, first, as shown in fig. 10A, the plateless printing portion 3 prints a printed portion E1 on the fabric C. The fabric C is sequentially fed to the printing pitch L1 of the plateless printing portion 3 every time the conveyor (not shown) is intermittently operated, and the plateless printing is sequentially performed. As shown in fig. 10B, when the plateless printing is repeated 8 times, the printing portion E1 printed by the plateless printing portion 3 is conveyed to the printing position of the first plateless printing portion 4. Here, the plateless printing portion 3 is stopped, and the first plateless printing portion 4 prints the printing portion E2.

When the printing by the first plateless printing portion 4 is completed, the fabric C is fed sequentially at the printing pitch L1 of the plateless printing portion 3 every time the conveyor 22 is operated intermittently again, and the plateless printing is performed sequentially. As shown in fig. 10C, if the plateless printing is repeated 4 times, the printing portion E1 printed by the plateless printing portion 3 is conveyed to the printing position of the first plateless printing portion 4. Here, the plateless printing portion 3 stops, and the first plateless printing portion 4 prints the printing portion E2 continuously from the printing portion E2 printed by the first plateless printing portion 4 printed first.

When the printing by the first plateless printing portion 4 is completed, the fabric C is fed sequentially at the printing pitch L1 of the plateless printing portion 3 every time the conveyor 22 is operated intermittently again, and the plateless printing is performed sequentially. As shown in fig. 10D, if the plateless printing is repeated 4 times, the printing portion E1 printed by the plateless printing portion 3 is conveyed to the printing position of the first plateless printing portion 4, and the printing portions E1, E2 printed by the plateless printing portion 3 and the first plateless printing portion 4 are conveyed to the printing position of the second plateless printing portion 4. Here, the plateless printing section 3 is stopped, and the printing portion E2 printed by the first platey printing section 4 printed first continues, and the printing portion E2 is printed by the first platey printing section 4, and the printing portion E3 is printed by the second platey printing section 4. In this way, printing is performed simultaneously by the first stencil printing portion 4 and the second stencil printing portion 4. Thereafter, every 4 times of the plateless printing, the first and second

plateable printing portions

4 and 4 perform printing, thereby printing a pattern on the fabric C.

According to the composite printing apparatus 1 of the present embodiment, a pattern can be printed with high accuracy. That is, since the measuring device 33 measures the moving distance of the belt 22 and sequentially feeds the belt 22, the printing portion E1 of the plateless printing portion 3 can accurately print the marks M at every interval of the printing pitch L1 without overlapping or leaving a gap, and the marks M can accurately print the marks M at every interval of the printing pitch L2 of the plateless printing portion 4. In the plate printing unit 4, since the position of the printing plate 60 is adjusted so as to prevent the plate 60 from being displaced with respect to the mark M, the printing portion E2 by the plate printing unit 4 can be printed without being displaced with respect to the printing portion E1 printed by the plateless printing unit 3. Therefore, the printing portion E1 by the plateless printing portion 3 and the printing portion E2 by the plateless printing portion 4 can be printed with high accuracy.

Further, by setting the printing pitch L2 of the plateless printing portion 4 and the distance L3 between the plateless printing portion 3 and the plateless printing portion 4 to integral multiples of the printing pitch L1 of the plateless printing portion 3, plateless printing can be performed every time plateless printing is performed by the number of times corresponding to the printing pitch L2. In addition, in the case where the composite printing apparatus 1 includes the plurality of plateful portions 4, the printing pitch L2 of the plateful portions 4 is an integral multiple of the printing pitch L1 of the plateless portion 3, the printing pitches L2 of the respective plateful portions 4 are made the same, and the distance L4 between the plateful portions 4 is an integral multiple of the printing pitch L2 of the plateful portions 4, whereby the printed cloth C is transferred to the respective plateful portions 4 at the same timing, so that the plurality of plateful portions 4 can be operated simultaneously to perform plateful printing, and the printing speed can be increased.

Fig. 12 shows another embodiment of the present invention, and the structure of the printing plate moving mechanism 69 of the existing plate printing section 4 is different from that of the embodiment of fig. 1. The printing plate moving mechanism 69 of the present embodiment moves the frame 63 of the printing plate 60 in the X direction by 2X direction tables 100, 100 connected to both

end portions

64a, 64a of the upstream side rail holder 64 of the

printing unit

61 and 2 sliding tables 110, 110 connected to both

end portions

64a, 64a of the downstream side rail holder 64 and moving the frame 63 of the printing plate 60 in the Y direction by a Y direction table 120 connected to one side in the width direction of the frame 63 of the printing plate 60 and a frame support table 130 connected to the other side in the width direction of the frame 63.

The X-direction table 100 is provided on the carriage 8 of the composite printing apparatus 1, and the end 64a of the rail bracket 64 is attached to the base 101 so that the end 64a of the rail bracket 64 can slide. The structure in which the end 64a of the rail bracket 64 slides in the X direction on the base 101 by the servomotor 102 is the same as the structure in which the X table 79 of the bidirectional table 70 shown in fig. 6 and 7A slides in the X direction on the Y table 74 by the servomotor 82, and therefore, the description thereof is omitted.

The slide table 110 is provided on the carriage 8 of the composite printing apparatus 1, and is configured such that a slide member (not shown) attached to the lower surface of the end portion 64a of the downstream-side rail carriage 64 is fitted into the

rails

112, 112 provided on the base 111 and is slidable in the X direction.

The distance that the

rail brackets

64, 64 can move in the X direction by the X direction tables 100, 100 and the slide tables 110, 110 is preferably equal to or less than the printing pitch L1 of the plateless printing portion 3, and in the present embodiment, is about the same as the printing pitch L1 of the plateless printing portion 3.

A Y table 123 is attached to the base 121 of the Y table 120, and the Y table 123 is slidable in the Y direction. The structure in which the Y table 123 slides in the Y direction on the base 121 by the servo motor 122 is the same as the structure in which the Y table 74 of the bidirectional table 70 slides on the base 72 shown in fig. 6 and 7A, and therefore, the description thereof is omitted. The structure of the connection portion of the Y table 123 connected to the frame 63 is the same as the structure of the connection portion 84 of the X table 79 of the bidirectional table 70 shown in fig. 6 and 7A, and therefore, the description thereof is omitted.

The frame support table 130 is provided integrally with the connection member 64b, and a connection plate 132 is attached to the base 131. The configuration of the connection portion of the connection plate 132 of the frame support table 130 and the configuration of the connection portion and the frame 63 are the same as the configuration of the connection portion 84 of the X table 79 of the unidirectional table 71 and the configuration of the connection portion 84 and the frame 63 shown in fig. 6 and 7B, and thus, the description thereof is omitted.

The

servomotors

102, 102 of the X-direction tables 100, 100 are synchronously driven to move the frame 63 of the printing plate 60 in the X direction. Thus, the printing unit 61 is moved in the X direction by applying a pressing force to the upstream guide rail 64, and the frame 63 is moved in the X direction by applying a pressing force in the X direction to the frame 63 of the printing plate 60 connected to the guide rail 64 via the Y direction table 120 and the frame support table 130.

The servomotor 122 of the Y-direction table 120 is driven to move the frame 63 of the printing plate 60 in the Y-direction. Thereby, the frame 63 of the printing plate 60 moves in the Y direction.

According to the above configuration, the position of the printing plate 60 can be adjusted in the X direction and the Y direction so as to prevent the printing plate 60 of the plate printing section 4 from being displaced with respect to the mark M, and the printing section E2 by the plate printing section 4 can be printed without displacement with respect to the printing section E1 completed by the plateless printing section 3.

When the printing pitch L2 of the plateful printing portion 4 is not set to an integral multiple of the printing pitch L1 of the plateless printing portion 3, for example, when the printing pitch L2 of the plateless printing portion 4 is 3.5 times the printing pitch L1 of the plateless printing portion 3, the fabric C is intermittently conveyed by the printing pitch L1 of the plateless printing portion 3 every time, and the next printing portion E2 cannot be printed continuously with the previous printing portion E2 of the plateless printing portion 4. However, according to the above configuration, the position of the printing plate 60 in the platemaking section 4 can be moved greatly in the transport direction (X direction) so that the next printing section E2 can be printed continuously with the previous printing section E2 of the platemaking section 4 at the time of platemaking.

The plate moving mechanism 69 may include the X-direction tables 100 and the slide tables 110 and 110 shown in fig. 12 in addition to the bidirectional table 70 and the unidirectional table 71 shown in fig. 6. According to this configuration, when the printing pitch L2 of the plateable portion 4 is not set to an integral multiple of the printing pitch L1 of the plateless portion 3, the position of the printing plate 60 of the plateable portion 4 can be moved greatly in the X direction using the X-direction tables 100 and the slide tables 110 and 110 shown in fig. 12, so that the next printing portion E2 can be printed continuously with the previous printing portion E2 of the plateable portion 4. Further, the position of the printing plate 60 in the plate printing section 4 with respect to the mark M can be finely adjusted using the two-way table 70 and the one-way table 71 shown in fig. 6 so that the displacement amount of the printing plate 60 becomes 0.

Fig. 13 shows other embodiments of the present invention. The plateless printing section 3 has a different structure from the embodiment of fig. 1, and the plateless printing section 3 performs what is called "single pass type" inkjet printing. In the plateless printing portion 3, the printing heads 34a to 34d are provided at least over the entire printing area in the width direction of the fabric C, and the printing heads 34a to 34d are arranged side by side in the conveyance direction of the fabric C.

The printing pitch L1 of the plateless printing portion 3 is the same as the printing pitch L2 of the plateless printing portion 4, or is an integral multiple or an integral fraction of the printing pitch L2. That is, the distance from the upstream end of the printing portion printed by the most upstream print head 34a to the downstream end of the printing portion printed by the most downstream print head 34d is the printing pitch L1 of the plateless printing portion 3, and the print heads 34a to 34d are arranged so that the printing pitch L1 is an integer multiple or an integer fraction of the printing pitch L2. The control unit 5 sequentially feeds the fabric C by the printing pitch L1 of the plateless printing unit 3, and the printing heads 34a to 34d perform plateless printing during the sequential feeding. The other structures are the same as those of the embodiment of fig. 1, and thus, the description thereof is omitted. In the above configuration, the printing portion E1 performed by the plateless printing portion 3 and the printing portion E2 performed by the plateless printing portion 4 can be printed with high accuracy.

While one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention. For example, the configuration of the measuring device 33 is not limited to the above embodiment, and any configuration may be adopted as long as it can measure the linear movement distance of the conveyor belt 22 corresponding to the printing pitch L1 of the plateless printing portion 3. The structure of the printing unit 61 is not limited to the above embodiment. The printing plate position adjusting mechanism 62 may be configured in any manner as long as the position of the printing plate 60 can be moved in accordance with the amount of displacement S3 of the printing plate 60 with respect to the mark M.

Claims

1. A composite printing apparatus is characterized by comprising:

a conveyor belt for supporting and conveying a cloth to be printed on an upper surface;

a plateless printing part which is arranged on a cloth conveying path performed by the conveyor belt and is provided with a measuring device for measuring the linear moving distance of the conveyor belt;

a plateless printing portion provided downstream of the plateless printing portion on a cloth conveying path; and

a control unit that stops the movement of the conveyor belt to intermittently operate the conveyor belt every time the measuring device measures the linear movement distance corresponding to the printing pitch of the plateless printing unit,

the plateless printing portion prints marks at intervals corresponding to a printing pitch of the plateless printing portion,

the plateed printing portion includes a plate position adjusting mechanism that moves a position of the printing plate in accordance with an amount of displacement of the printing plate with respect to the mark when the printing portion of the fabric printed by the plateless printing portion is conveyed.

2. Composite printing apparatus according to claim 1,

the mark is printed on the surface of the cloth or the conveyor belt.

3. Composite printing apparatus according to claim 1,

the plate position adjustment mechanism includes: a sensor that detects the amount of misalignment of the printing plate with respect to the marks; and a printing plate moving mechanism that moves the printing plate by a distance corresponding to the amount of misalignment of the printing plate detected by the sensor.

4. Composite printing apparatus according to claim 3,

the sensor is a two-dimensional CCD camera, and the two-dimensional CCD camera is integrally arranged with the printing plate of the platemaking part.

5. Composite printing apparatus according to claim 3,

the printing plate moving mechanism moves the printing plate in an X direction along a sequential feeding direction of the cloth and a Y direction orthogonal to the X direction.

6. Composite printing apparatus according to claim 1,

the measuring device includes: a gripping mechanism portion that grips the conveyor belt at an initial position and follows the conveyor belt; a measuring section that measures a distance by which the gripping mechanism section follows the conveyor belt as the linear movement distance; a return operation mechanism unit that returns the gripping mechanism unit to the initial position; and a control unit for controlling each of the gripping mechanism unit and the return mechanism unit,

the control unit releases the clamping operation performed by the clamping mechanism unit and causes the clamping mechanism unit to perform a return operation to an initial position by the return operation mechanism unit each time the measuring unit measures a distance corresponding to the print pitch.

7. Composite printing apparatus according to claim 1,

the printing pitch of the plateless printing portion is an integral multiple of the printing pitch of the plateless printing portion.