EP3643504B1 - Stoffdruckverfahren und stoffdruckvorrichtung - Google Patents

Stoffdruckverfahren und stoffdruckvorrichtung Download PDF

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Publication number
EP3643504B1
EP3643504B1 EP18819597.8A EP18819597A EP3643504B1 EP 3643504 B1 EP3643504 B1 EP 3643504B1 EP 18819597 A EP18819597 A EP 18819597A EP 3643504 B1 EP3643504 B1 EP 3643504B1
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EP
European Patent Office
Prior art keywords
ink
fabric
printed
printing
tank
Prior art date
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Active
Application number
EP18819597.8A
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English (en)
French (fr)
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EP3643504A4 (de
EP3643504A1 (de
Inventor
Koichi Ichinose
Katsumi Dohi
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Toshin Kogyo Co Ltd
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Toshin Kogyo Co Ltd
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Publication date
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Publication of EP3643504A1 publication Critical patent/EP3643504A1/de
Publication of EP3643504A4 publication Critical patent/EP3643504A4/de
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Publication of EP3643504B1 publication Critical patent/EP3643504B1/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
    • B41J3/4078—Printing on textile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/17—Ink jet characterised by ink handling
    • B41J2/18—Ink recirculation systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/205—Ink jet for printing a discrete number of tones
    • B41J2/2054—Ink jet for printing a discrete number of tones by the variation of dot disposition or characteristics, e.g. dot number density, dot shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/21—Ink jet for multi-colour printing
    • B41J2/2107—Ink jet for multi-colour printing characterised by the ink properties
    • B41J2/211—Mixing of inks, solvent or air prior to paper contact
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/21—Ink jet for multi-colour printing
    • B41J2/2107—Ink jet for multi-colour printing characterised by the ink properties
    • B41J2/2114—Ejecting specialized liquids, e.g. transparent or processing liquids
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B11/00—Treatment of selected parts of textile materials, e.g. partial dyeing
    • D06B11/0056—Treatment of selected parts of textile materials, e.g. partial dyeing of fabrics
    • D06B11/0059—Treatment of selected parts of textile materials, e.g. partial dyeing of fabrics by spraying
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
    • D06P5/30—Ink jet printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
    • B41J29/02—Framework

Definitions

  • the present invention relates to a fabric printing method and a fabric printing apparatus, more specifically to a fabric printing method and a fabric printing apparatus that perform printing with inks of process color and printing with inks of spot color.
  • process color printing In recent years, printing using a combination of process colors, such as CMYK (cyan, magenta, yellow, and black), has been performed. This type of printing is referred to as "process color printing.”
  • CMYK cyan, magenta, yellow, and black
  • process color printing For example, an ink-jet printing apparatus disclosed in Japanese Patent No. 5116542 has been suggested. In this ink-jet printing apparatus, conveyance rollers are provided in the upstream and the downstream, and a conveyance belt for conveying fabrics is wound around the conveyance rollers. The fabrics are conveyed by a conveyance belt, and printing is performed with process color inks provided from the printer head.
  • printing is usually performed by dot printing.
  • Dot printing creates dots, and adjusts the intervals between the dots, the sizes of the respective dots, and the overlapping state of the dots of individual colors, thereby expressing the variation and density of colors.
  • This printing method enables the reproduction of various colors.
  • dot printing expresses various degrees of color density by adjusting the dot area per unit area (area ratio).
  • the color density increases as the density of the dots increases.
  • Fig. 7(C) shows an example having a dot area ratio of 10% in which the color to be expressed is a light color.
  • Fig. 7(A) shows an example having a dot area ratio of 100% in which the color to be expressed is a deep color.
  • Fig. 7(B) shows an example having a dot area ratio of 50% in which the color to be expressed has density in the middle of Figs. 7(A) and 7(C) .
  • the higher the dot area ratio the deeper the color to be expressed.
  • the dots may stand out in the surface depending on the area ratio of the dots of the respective colors, thus resulting in a problematic granular appearance as shown in Fig. 9 .
  • the present invention was made in view of the problems described above, and an object of the invention is to provide a fabric printing method and a fabric printing apparatus that enable printing while ensuring that the characters, pictures, and background printed on the fabric surface are visible from the rear side of the fabric when designed patterns and the background are printed on the fabric surface by dot printing, and reducing the occurrence of a granular appearance on the fabric surface.
  • the claimed method and apparatus since printing is performed in the second print region using a spot color ink obtained by mixing a plurality of process color inks, the printing is performed while increasing the dot area ratio to be greater than that in the case of using the process color ink. Therefore, the ink in the first side, i.e., the surface, permeates into the second side, i.e., the rear side, of the fabric, thereby allowing the characters, pictures, and background printed on the fabric surface to be visible from the rear side. Further, since the dot area ratio is large, the granular appearance does not easily occur.
  • process color printing using a process color ink or a combination of a plurality of process color inks is performed. This enables expression of various colors and minute designs.
  • the ink on the fabric surface permeates into the rear side, thereby allowing the characters, pictures, and background printed on the fabric surface to be visible from the rear side, and reducing the occurrence of a granular appearance on the surface.
  • the area ratio is preferably not less than 90% and not more than 100%, further preferably 100%.
  • the background of a designed pattern generally has a printing area larger than that of the pattern. Therefore, when process color printing is used for the background printing, the rear side is recognized as white, and the granular appearance is present in the surface. The whiteness of the rear side and the granular appearance undesirably stand out.
  • the background of the pattern in the first print region, patterns of various colors are expressed by process color printing, and the background of the pattern is printed in the second print region using a spot color ink. Therefore, the whiteness in the rear side or the granular appearance in the surface do not stand out.
  • the fabrics for clothing accessories are, for example, fabrics for use in scarves, handkerchiefs, stolens, shawls and the like in which the characters, pictures, and background printed on the fabric surface are preferably visible from the rear side.
  • the spot color ink is supplied to the second printhead from the second ink tank, and dots are printed in the first print region on the first side, i.e., the surface, of the fabric by the first printhead.
  • the printing is performed using a spot color ink obtained by mixing a plurality of process color inks while increasing the dot area ratio to be greater than that in the case of using the process color ink. Therefore, the ink in the surface permeates into the second side, i.e., the rear side, of the fabric, thereby allowing the characters, pictures, and background printed on the surface of the fabric to be visible from the rear side, and the granular appearance does not easily occur.
  • process color ink is supplied to the first printhead from the first ink tank, and dots are printed in the first print region by the first printhead.
  • process color printing using a process color ink or a combination of a plurality of process color inks is performed. This enables the expression of various colors and designs.
  • the spot color ink is prepared by color blending by a blending device, and is introduced into the second ink tank, it is possible to easily prepare a desired spot color ink by color blending and supply the ink to the second ink tank.
  • the present invention enables the rear side of the fabric to be permeated with the ink in the surface, thereby allowing the characters, pictures, and background printed on the fabric surface to be visible from the rear side.
  • Fig. 1 is an explanatory view showing the entire structure of a fabric printing apparatus 10 according to one embodiment of the present invention
  • Fig. 2 is an explanatory view showing a flow of ink in supplying ink to a first printhead 51
  • Fig. 3 is an explanatory view showing a flow of ink in supplying ink to a second printhead 52.
  • the fabric printing apparatus 10 comprises a printing apparatus main body 20, an ink supplying device 30, an ink blending device 40, and a control device (not shown).
  • the printing apparatus main body 20 comprises a support 21, a conveyance belt 22 for conveying a fabric C, and a driven roller 23A (upstream) and a driving roller 23B (downstream) attached to the support 21 for running the conveyance belt 22.
  • a bonding device 24 for bonding the fabric C to the conveyance belt 22 with an adhesive or the like is provided above the driven roller 23A in the upstream, and a belt water-washing device 25 for washing off starch or ink remaining on the conveyance belt 22 is provided below the driving roller 23B in the downstream.
  • a printhead carrier unit 50 is provided above the conveyance belt 22 between the driving roller 23B and the driven roller 23A.
  • the printhead carrier unit 50 is supported by a unit supporting mechanism 26 attached to the upper face of the support 21.
  • a unit moving mechanism (not shown) reciprocatingly moves the printhead carrier unit 50 in the direction orthogonal to the direction toward which the fabric C is conveyed.
  • the printhead carrier unit 50 comprises a plurality of first printheads 51, first negative-pressure ink tanks 53 of the same number as that of the first printheads 51, at least one second printhead 52, second negative-pressure ink tanks 54 of the same number as that of the second printhead(s) 52, and deaeration modules 55 of the same number as the total number of the first and second printheads 51 and 52.
  • Each first printhead 51 is connected to each first negative-pressure ink tank 53 with a tube through each deaeration module 55.
  • the first negative-pressure ink tanks 53 are individually filled with inks of a plurality of process colors, and the inks in the respective first negative-pressure ink tanks 53 are individually supplied to the respective first printheads 51.
  • Each first printhead 51 has a nozzle. The nozzle discharges an ink of a process color to the fabric C and prints dots in one or a plurality of first print regions R1 (see Fig. 5 ) set on the first side, i.e., the surface, of the fabric C to be printed.
  • the deaeration modules 55 serve to remove gasses contained in the inks.
  • the at least one second printhead 52 is connected to the at least one second negative-pressure ink tank 54 with a tube through each deaeration module 55.
  • the at least one second negative-pressure ink tank 54 is filled with at least one kind of spot color ink obtained by mixing inks of different process colors.
  • the ink in the at least one second negative-pressure ink tank 54 is supplied to at least one second printhead 52.
  • the second printhead 52 has a nozzle. The nozzle discharges an ink of a process color to the fabric C and prints dots in one or a plurality of second print regions R2 (see Fig. 5 ) set on the surface of the fabric C to be printed.
  • twelve first printheads 51, twelve second printheads 52, twelve first and second negative-pressure ink tanks 53 and 54, and twenty-four deaeration modules 55 are provided; however, the numbers of these components are not limited to these numbers.
  • Fig. 1 In the printing apparatus main body 20 in Fig. 1 , only one first printhead 51, one second printhead 52, two deaeration modules 55, one first negative-pressure ink tank 53, and one second negative-pressure ink tank 54 are shown. The rest of the first printheads 51, the second printheads 52, deaeration modules 55, and the first and second negative-pressure ink tanks 53 and 54 are omitted in Fig. 1 . The tubes for connecting the respective structures are also omitted in Fig. 1 . Further, Fig. 2 shows a flow of ink supplied to one first printhead 51, and Fig. 3 shows a flow of ink supplied to one second printhead 52. The structures of supplying inks to other first printheads 51 and other second printheads 52 are the same as those shown in Figs. 2 and 3 , and the illustration and the explanation thereof are omitted.
  • process color means a color of an ink supplied to the first printhead 51.
  • spot color means a color of an ink supplied to the second printhead 52 obtained by mixing inks of different process colors.
  • the ink supplying device 30 comprises first and second ink main tanks 31 and 32, first and second ink sub-tanks 33 and 34, first and second ink supplying pumps 35 and 36, and a vacuum pump 37, in a housing 301.
  • the numbers of the first and second ink main tanks 31 and 32, the first and second ink sub-tanks 33 and 34, and the first and second ink supplying pumps 35 and 36 are the same as those, i.e., 12, of the first and second negative-pressure ink tanks 53 and 54.
  • the first ink main tank 31 is connected to the first ink sub-tank 33 through a tube, and the first ink sub-tank 33 is connected to the first negative-pressure ink tank 53 through the ink supplying tube 38.
  • the first ink supplying pump 35 is provided to adjust the supplying amount of the process color ink.
  • Each first printhead 51 is connected to each first ink sub-tank 33 through the ink collecting tube 39.
  • a pinch valve (not shown) provided in the ink collecting tube 39 upon cleaning of the first printhead 51, ink is collected from the first printhead 51 to the first ink sub-tank 33.
  • the second ink main tank 32 is connected to the second ink sub-tank 34 through a tube, and the second ink sub-tank 34 is connected to the second negative-pressure ink tank 54 through the ink supplying tube 38.
  • the second ink supplying pump 36 is provided to adjust the supplying amount of the spot color ink.
  • Each second printhead 52 is connected to each second ink sub-tank 34 through the ink collecting tube 39.
  • a pinch valve (not shown) provided in the ink collecting tube 39 upon cleaning of the second printhead 52, ink is collected from the second printhead 52 to the second ink sub-tank 34.
  • a vacuum pump 37 is provided in the ink supplying device 30, and is connected to each one of the deaeration modules 55 individually provided in the first and second printheads 51 and 52 through the deaeration module tube 56.
  • the vacuum pump 37 may alternatively be provided for each of the deaeration modules 55.
  • the ink blending device 40 comprises a plurality of storage tanks 41 individually storing inks of a plurality of process colors, and a mixture ink storing container (mixing tank) 42 in which the inks introduced from the storage tanks 41 through a tube are stored and mixed by stirring.
  • a first metering pump (not shown) is provided in the outlet of each storage tank 41, and the ink measured by the first metering pump is introduced into the mixture ink storing container 42.
  • the mixture ink storing container 42 therein comprises a mixing means, such as a rotary blade.
  • the mixture ink storing container 42 is connected to each of the second ink main tanks 32 of the ink supplying device 30 through a tube (not shown).
  • a second metering pump (not shown) is provided in the outlet of the mixture ink storing container 42, and the mixture ink measured by the second metering pump is introduced into the second ink main tank 32.
  • the operation of the first and second metering pumps are controlled by a control device (not shown).
  • the ink blending device 40 may comprise a cleaning mechanism for cleaning the mixture ink storing container 42 and the tubes.
  • the structure of the ink blending device 40 is not limited to that described above.
  • the ink blending device 40 may have any structure insofar as it is capable of producing a mixture ink of a predetermined spot color by mixing inks of process colors stored in the plurality of storage tanks 41.
  • the ink blending device 40 may be structured such that mixture ink storing containers 42 of the same number as that of the second ink main tanks 32 are provided and connected to each other through a tube, and that all of the mixture ink storing containers 42 are connected to all of the storage tanks 41.
  • a predetermined amount of process color ink stored in each storage tank 41 is introduced into each of the mixture ink storing containers 42, thereby producing a mixture ink of a predetermined spot color, which is then introduced into each of the second ink main tanks 32.
  • the ink blending device 40 may be structured such that the mixture ink storing container 42 also serves as the second ink main tank 32, and that the mixture ink storing container 42 is directly connected to the ink sub-tank.
  • the ink blending device 40 may also be structured such that, instead of connecting the mixture ink storing container 42 with each of the second ink main tanks 32 with a tube, the mixture ink storing container 42 is made removable from the support by which the mixture ink storing container 42 is supported, and the operator carries the mixture ink storing container 42 near the printing apparatus main body 20 and pours the mixture ink into each of the second ink main tanks 32.
  • the fabric printing apparatus 10 may not be provided with the ink blending device 40.
  • it may also be arranged such that each second ink main tank 32 of the ink supplying device 30 is made removable from the support, and when the amount of ink stored in the second ink main tank 32 becomes small, the second ink main tank 32 is replaced with a new second ink main tank 32. Further, the operator may pour the spot color ink into each of the second ink main tank 32.
  • the control device comprises a control unit, a storage unit, and an interface unit.
  • the control unit is composed of, for example, a CPU, a memory serving as a working area, and the like.
  • the control unit executes the program stored in the storage unit to control the operations of the printing apparatus main body 20, the ink supplying device 30, and the ink blending device 40.
  • the storage unit is composed, for example, of a storage device such as a flash memory or a nonvolatile memory, and stores a program to be executed by the control unit.
  • the storage unit stores data of color-separated printing patterns, including designs and backgrounds, to be printed on the fabric C.
  • the interface unit comprises an input port for receiving a signal, an output port for transmitting a signal, an A/D conversion circuit, and the like.
  • the interface unit transmits/receives signals to/from the printing apparatus main body 20, the ink supplying device 30, and the ink blending device 40.
  • the control device transmits driving signals to the first and second printheads 51 and 52 and a unit moving mechanism so as to move the printhead carrier unit 50 in a direction orthogonal to the direction toward which the fabric C is conveyed, while ejecting process color inks and a spot color ink from the nozzles of the first and second printheads 51 and 52.
  • control device also transmits driving signals to drive the vacuum pump 37, the first and second ink supplying pumps 35 and 36 to thereby fill the first and second printheads 51 and 52 with the inks, while driving the driving roller 23B in the downstream, the bonding device 24, and the belt water-washing device 25 to convey the fabric C.
  • control device drives the first metering pump of the ink blending device 40 to measure predetermined amounts of process color inks, causes a mixing means to mix the inks extracted to the mixture ink storing container 42 to thereby produce a mixture ink of a predetermined color, and controls the second metering pump so that the produced mixture ink is introduced into each of the second ink main tanks 32.
  • the ink stored in the first ink main tank 31 in advance is introduced into the first ink sub-tank 33, and is then introduced to the first negative-pressure ink tank 53 by the first ink supplying pump 35 through the ink supplying tube 38.
  • the ink introduced from the first negative-pressure ink tank 53 is deaerated by the deaeration module 55, and is supplied to the first printhead 51 so as to be used for the printing of dots in the first print region R1.
  • a mixture ink (spot color ink) is introduced from the ink blending device 40 to the second ink main tank 32.
  • the ink is introduced to the second ink sub-tank 34, and is introduced to the second negative-pressure ink tank 54 by the second ink supplying pump 36 through the ink supplying tube 38.
  • the ink introduced from the second negative-pressure ink tank 54 is deaerated by the deaeration module 55, and is supplied to the second printhead 52 so as to be used for the printing of dots in the second print region R2.
  • a fabric printing method using the fabric printing apparatus 10 is described below.
  • the fabric C to be printed is also referred to as a textile or a fabric, which includes woven fabric, dyed fabric, knitted fabric, and nonwoven fabric.
  • the fabric C is a fabric for use in a scarf, handkerchief, stolen, shawl and the like, which preferably enables the printing on its first side, i.e., the surface, to permeate into the second side, i.e., the rear side thereof. Examples of such fabric include silk chiffon and silk twill.
  • the fabric C is produced by a fabric producing method, which comprises a step of performing printing on the fabric C by the following fabric printing method.
  • Fig. 5 shows an example of printing on the surface of the fabric C.
  • a plurality of print regions are set on the surface of the fabric C, which are divided into a plurality of first print regions R1 and a second print region R2. It is also possible to set a single first print region R1 and a plurality of second print regions R2.
  • the first print region R1 is a region in which dots are printed by the first printhead 51 using one or a plurality of process color inks introduced from the first negative-pressure ink tank 53.
  • the area ratio of the dots per unit area and the overlapping state of the dots of individual colors are adjusted to express the variation and density of colors.
  • Designed patterns are printed in the first print region R1.
  • the patterns include pictures with patterns, and characters such as Chinese characters, hiragana, katakana, alphabets, numbers, symbols and pictograms. In the example shown in Fig. 5 , a plurality of flower patterns are printed.
  • the first print region R1 does not always have a printed pattern, and may be unprinted.
  • the dot area ratio is determined depending on the design to be expressed; the designed pattern may be printed with only one process color ink, or with a combination of a plurality of process color inks.
  • the dot area ratio is high (for example, not less than 80% and not more than 100%), the ink penetrates into the rear side, and the pictures and the characters printed on the surface are easily visible from the rear side.
  • the dot area ratio is low (for example, not less than 0% and not more than 30%)
  • the ink does not sufficiently permeate into the rear side, and the rear side is recognized as white or as the original color of the fabric in some cases; however, since the first print region R1 has a smaller printing area than that of the second print region R2, even if the rear side of the first print region R1 is recognized as white, it does not significantly stand out.
  • the process colors include cyan, magenta, yellow, and black, which are the basic colors of printing. In this embodiment, 12 more colors in total are selected from light cyan, light magenta, light black, blue, red, orange, navy, fluorescent magenta, fluorescent yellow, and the like. These colors are selected in this embodiment because inks of these colors can be easily obtained from commercial suppliers.
  • the colors used as the process colors are not limited to those described above, and any colors may be used insofar as they are contained in the first negative-pressure ink tank 53.
  • the second print region R2 is a region in which dots are printed by the second printhead 52 using the spot color ink introduced from the at least one second negative-pressure ink tank 54.
  • printing is made by using a single spot color ink with a dot area (dot area ratio) of 100% per unit area.
  • Fig. 6 shows an example of printing in the second print region R2.
  • Fig. 6(A) shows a part of the surface of the fabric C. Since the printing was made with a dot area ratio of 100%, no granular appearance is present in the surface.
  • Fig. 6(B) shows a part of the rear side of the fabric C in which the ink in the surface permeates thereto, and the background color is visible.
  • Fig. 6 shows an example of printing in the second print region R2.
  • Fig. 6(A) shows a part of the surface of the fabric C. Since the printing was made with a dot area ratio of 100%, no granular appearance is present in the surface.
  • the color is recognized as slightly lighter than the color of the surface according to the degree of permeation of the ink.
  • the dot area ratio is not limited to 100%, and may be, for example, not less than 80% and not more than 100%, preferably not less than 90% and not more than 100%, as long as no granular appearance is present on the surface of the fabric C and the ink of the printing in the surface permeates into the rear side so that the characters, pictures, and background printed on the surface are visible from the rear side.
  • the second print region R2 is printed as the background of the designed pattern printed in the first print region R1. It is also possible to print a designed pattern in the second print region R2.
  • spot color is a color of ink obtained by mixing inks of a plurality of process colors or by mixing a thinner with the ink of a process color.
  • spot color is a color of ink obtained by mixing inks of a plurality of process colors or by mixing a thinner with the ink of a process color.
  • This embodiment uses, as the inks of spot colors, 12-color inks obtained by mixing color inks selected from cyan, magenta, yellow, black, light cyan, light magenta, light black, blue, red, orange, navy, fluorescent magenta, fluorescent yellow, and the like, which are process colors.
  • a spot color a color with higher brightness compared with the process color, more specifically, a light color, may be selected if the hue is the same.
  • a spot color may be selected to express a color that is difficult to be expressed or that tends to cause unevenness by process color printing. For example, for a spot color, if the hue is the same, a color having a higher chroma than that of the process color may be selected. For example, a color having a hue of red, green, or blue and having a significantly higher chroma than that of the process color may be selected as a spot color because such a color cannot be expressed by process color printing.
  • the dot area ratio can be increased to be greater than that in the case of using the process color ink to express the spot color. Therefore, the inks in the surface permeates into the rear side of the fabric C, thereby allowing the characters, pictures, and background printed on the surface of fabric C to be visible from the rear side, and the granular appearance does not easily occur. Further, since process color printing is performed in the first print region R1, various colors and designs can be expressed.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Ink Jet (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Coloring (AREA)

Claims (3)

  1. Stoffdruckverfahren unter Verwendung einer Stoffdruckeinrichtung (10), umfassend:
    eine Vielzahl von ersten Tintenbehältern (53), die einzeln mit Tinten einer Vielzahl von Prozessfarben gefüllt sind;
    mindestens einen zweiten Tintenbehälter (54), der mit mindestens einer Art von Schmuckfarbentinte gefüllt ist, die erhalten wird, indem Tinten verschiedener Prozessfarben gemischt werden;
    eine Vielzahl von ersten Druckköpfen (51), die einzeln mit der Vielzahl von ersten Tintenbehältern (53) verbunden sind und die das Drucken von Punkten in einem oder einer Vielzahl von ersten Druckbereichen (R1) durchführen, die auf einer ersten Seite eines Stoffes (C), der mit einer Tinte einer Prozessfarbe bedruckt werden soll, eingerichtet sind; und
    mindestens einen zweiten Druckkopf (52), der mit dem mindestens einen zweiten Tintenbehälter (54) verbunden ist und der das Drucken von Punkten in einem oder einer Vielzahl von zweiten Druckbereichen (R2) durchführt, die auf der ersten Seite des Stoffes, der mit einer Tinte einer Schmuckfarbe bedruckt werden soll, eingerichtet sind; dadurch gekennzeichnet, dass
    die Stoffdruckeinrichtung (10) ferner umfasst:
    eine Abmischvorrichtung (40), die Tintenspeicherbehälter (41) umfasst, die Tinten einer Vielzahl von Prozessfarben einzeln speichern; und einen Mischbehälter (42), der mit den Tintenspeicherbehältern (41) verbunden ist und der Tinten unterschiedlicher Prozessfarben, die in den Tintenspeicherbehältern (41) gespeichert sind, mischt, wobei der Mischbehälter (42) mit dem mindestens einen zweiten Tintenbehälter (54) verbunden ist,
    wobei jeder erste Druckkopf (51) mit jedem entsprechenden ersten Tintenbehälter (53) mit einer Röhre durch ein entsprechendes Entlüftungsmodul (55) verbunden ist,
    wobei der mindestens eine zweite Druckkopf (52) mit dem mindestens einen zweiten Tintenbehälter (54) mit einer Röhre durch ein entsprechendes Entlüftungsmodul (55) verbunden ist,
    wobei das Verfahren umfasst:
    Durchführen des Druckens von Punkten in dem einen oder der Vielzahl von ersten Druckbereichen (R1) mit einer Tinte einer Prozessfarbe durch mindestens einen der ersten Druckköpfe (51), und Durchführen des Druckens von Punkten in dem einen oder der Vielzahl von zweiten Druckbereichen (R2) mit einer Tinte einer Schmuckfarbe durch den mindestens einen zweiten Druckkopf (52), wobei das Flächenverhältnis pro Flächeneinheit der Punkte, die von der Tinte der Schmuckfarbe gebildet wird, nicht kleiner als 80 % und nicht größer als 100 % ist, eine Vielzahl von Druckbereichen auf der ersten Seite des Stoffes (C), der bedruckt werden soll, eingerichtet ist und in den einen oder die Vielzahl von ersten Druckbereichen (R1) und den einen oder die Vielzahl von zweiten Druckbereichen (R2) aufgeteilt ist, ein entworfenes Muster, das mindestens eines von einem Bild und/oder Zeichen aufweist, als Punkte in dem einen oder der Vielzahl von ersten Druckbereichen (R1) mit der Tinte gedruckt wird, die von mindestens einem der ersten Tintenbehälter (53) eingeleitet wird, und ein Hintergrund des entworfenen Musters als Punkte in dem einen oder der Vielzahl von zweiten Druckbereichen (R2) mit der Tinte gedruckt wird, die von dem mindestens einen zweiten Tintenbehälter (54) eingeleitet wird.
  2. Stoffdruckverfahren nach Anspruch 1, wobei der Stoff, der bedruckt werden soll, ein Stoff für Bekleidungszubehör ist.
  3. Stoffdruckeinrichtung (10), umfassend:
    eine Vielzahl von ersten Tintenbehältern (53), die einzeln mit Tinten einer Vielzahl von Prozessfarben gefüllt sind;
    mindestens einen zweiten Tintenbehälter (54), der mit mindestens einer Art von Schmuckfarbentinte gefüllt ist, die erhalten wird, indem Tinten verschiedener Prozessfarben gemischt werden;
    eine Vielzahl von ersten Druckköpfen (51), die einzeln mit der Vielzahl von ersten Tintenbehältern (53) verbunden sind und die das Drucken von Punkten in einem oder einer Vielzahl von ersten Druckbereichen (R1) durchführen, die auf einer ersten Seite eines Stoffes (C), der mit einer Tinte einer Prozessfarbe bedruckt werden soll, eingerichtet sind; und
    mindestens einen zweiten Druckkopf (52), der mit dem mindestens einen zweiten Tintenbehälter (54) verbunden ist und der das Drucken von Punkten in einem oder einer Vielzahl von zweiten Druckbereichen (R2) durchführt, die auf der ersten Seite des Stoffes, der mit einer Tinte einer Schmuckfarbe bedruckt werden soll, eingerichtet sind,
    dadurch gekennzeichnet, dass die Stoffdruckeinrichtung (10) ferner umfasst:
    eine Abmischvorrichtung (40), die Tintenspeicherbehälter (41) umfasst, die Tinten einer Vielzahl von Prozessfarben einzeln speichern; und einen Mischbehälter (42), der mit den Tintenspeicherbehältern (41) verbunden ist und der Tinten unterschiedlicher Prozessfarben, die in den Tintenspeicherbehältern (41) gespeichert sind, mischt, wobei der Mischbehälter (42) mit dem mindestens einen zweiten Tintenbehälter (54) verbunden ist,
    wobei jeder erste Druckkopf (51) mit jedem entsprechenden ersten Tintenbehälter (53) mit einer Röhre durch ein entsprechendes Entlüftungsmodul (55) verbunden ist,
    wobei der mindestens eine zweite Druckkopf (52) mit dem mindestens einen zweiten Tintenbehälter (54) mit einer Röhre durch ein entsprechendes Entlüftungsmodul (55) verbunden ist,
    wobei der Stoff (C), der bedruckt werden soll, ein Stoff ist, der vorzugsweise das Drucken auf der ersten Seite ermöglicht, um in eine zweite Seite durchzudringen, und das Flächenverhältnis pro Flächeneinheit der Punkte, die von der Tinte der Schmuckfarbe gebildet wird, nicht kleiner als 80 % und nicht größer als 100 % ist, und
    wobei eine Vielzahl von Druckbereichen auf der ersten Seite des Stoffes (C), der bedruckt werden soll, eingerichtet ist und in den einen oder die Vielzahl von ersten Druckbereichen (R1) und den einen oder die Vielzahl von zweiten Druckbereichen (R2) aufgeteilt ist, ein entworfenes Muster, das mindestens eines von einem Bild und/oder Zeichen aufweist, als Punkte in dem einen oder der Vielzahl von ersten Druckbereichen (R1) mit der Tinte gedruckt wird, die von mindestens einem der ersten Tintenbehälter (53) eingeleitet wird, und ein Hintergrund des entworfenen Musters als Punkte in dem einen oder der Vielzahl von zweiten Druckbereichen (R2) mit der Tinte gedruckt wird, die von dem mindestens einen zweiten Tintenbehälter (54) eingeleitet wird.
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