EP3332977A1 - Druckvorrichtung und druckverfahren - Google Patents

Druckvorrichtung und druckverfahren Download PDF

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Publication number
EP3332977A1
EP3332977A1 EP17205731.7A EP17205731A EP3332977A1 EP 3332977 A1 EP3332977 A1 EP 3332977A1 EP 17205731 A EP17205731 A EP 17205731A EP 3332977 A1 EP3332977 A1 EP 3332977A1
Authority
EP
European Patent Office
Prior art keywords
head
printing
test
correction
test medium
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP17205731.7A
Other languages
English (en)
French (fr)
Other versions
EP3332977B1 (de
Inventor
Toru Fujita
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seiko Epson Corp
Original Assignee
Seiko Epson Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Seiko Epson Corp filed Critical Seiko Epson Corp
Publication of EP3332977A1 publication Critical patent/EP3332977A1/de
Application granted granted Critical
Publication of EP3332977B1 publication Critical patent/EP3332977B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/007—Conveyor belts or like feeding devices
    • 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
    • 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
    • B41J29/12—Guards, shields or dust excluders
    • B41J29/13—Cases or covers

Definitions

  • the present invention relates to a printing apparatus and a printing method.
  • a printing apparatus which performs printing by applying inks onto a recording medium is used from the related art (for example, refer to JP-A-2015-20408 ).
  • a printing apparatus disclosed in JP-A-2015-20408 is provided with a transporting unit that transports a recording medium, and a printing portion that includes a plurality of nozzles which discharge inks onto the recording medium being transported while reciprocating along a direction intersecting a transporting direction of the recording medium.
  • a test printing is performed on a test medium before printing is performed on the recording medium, and a discharging position of each nozzle is corrected based on a result of the test printing.
  • JP-A-2013-193303 is an example of the related art.
  • An advantage of some aspects of the invention is to provide a printing apparatus and a printing method which are capable of easily and smoothly performing a test printing, and accurately adjusting a discharging position even in a case in which the recording medium is fabrics.
  • a printing apparatus including a printing portion that performs printing by discharging inks onto a recording medium, a transporting belt that includes a mounting portion on which a test medium on which a test printing is performed by discharging the inks before performing the printing is mounted, and a guide portion that guides the test medium to the mounting portion at the time of mounting the test medium on the mounting portion.
  • the test medium can be easily and smoothly mounted in the mounting portion by the guide portion. Therefore, the test printing can be easily and smoothly performed.
  • a cover covering the transporting belt and the printing portion be further provided, and the guide portion be an opening portion provided on the cover.
  • test medium can be easily and smoothly mounted in the mounting portion through the opening portion.
  • the opening portion be provided on a upstream side of the printing portion in the transporting direction of the recording medium.
  • each member is generally provided on a downstream side of the printing portion in the transporting direction.
  • the opening portion is provided on the upstream side of the transporting direction, and thus the operations can be prevented from being inhibited by each portion at the time of mounting the test medium on the mounting portion through the opening portion.
  • the test medium is set on the fabric or on a margin on the belt where the fabric is not attached, when the test medium is set from the downstream side the belt, the belt needs to be reversed, and thus there is a concern that the already printed part may come into contact with the belt again before cleaning and become dirty.
  • the test medium is set on the upstream side, and thus such a problem is prevented.
  • the guide portion include a flat surface portion in the transporting belt, the flat surface being supported by a supporting member and being wider than the test medium.
  • test medium can be simply and accurately mounted in the mounting portion.
  • a supporting portion supporting the transporting belt from the inside be further provided, and a part in the transporting belt, the part being supported by the supporting portion, function as the mounting portion.
  • an operation of mounting the test medium on the mounting portion or an operation of detaching the test medium from the mounting portion can be easily and stably performed.
  • the supporting portion have a plate shape having a higher stiffness than the transporting belt.
  • the operation of mounting the test medium on the mounting portion or the operation of detaching the test medium from the mounting portion can be more easily and stably performed.
  • the transporting belt be hung and rotated by two rollers being rotated, and, during performing the test printing, the test medium be positioned between the rollers in a plan view of the transporting belt.
  • a scanner be further provided, which be provided on a downstream side of the printing portion in the transporting direction of the recording medium and read the test medium to which the inks are discharged as an image.
  • the test medium have a higher stiffness than the recording medium.
  • the test medium can be more difficult to be deformed than the recording medium, and thus the test printing can be more accurately performed than a case in which printing is performed on the recording medium.
  • deformation is less even when measuring and observing are performed, and thus the measuring and the observing can be more accurately performed.
  • the transporting belt has adhesiveness, deformation when the transporting belt is removed can be prevented.
  • a printing method of performing printing using a printing apparatus which includes a transporting belt transporting a recording medium, a printing portion performing printing by discharging inks with respect to the recording medium, a mounting portion provided on the transporting belt on which a test medium having a flexibility is mounted before performing the printing, and a guide portion guiding the test medium to the mounting portion at the time of mounting the test medium on the mounting portion, the method including performing a test printing using a medium having a higher stiffness than the recording medium as the test medium.
  • test printing can be easily and smoothly performed.
  • Fig. 1 is a schematic side view illustrating a first embodiment of a printing apparatus of the invention.
  • Fig. 2 is a block diagram of a main portion of the printing apparatus illustrated in Fig. 1 .
  • Fig. 3 is a schematic configuration view illustrating a state in which the printing apparatus illustrated in Fig. 1 performs a test printing, and is a view illustrating a state in which a test medium is mounted on a mounting portion.
  • Fig. 4 is a schematic configuration view illustrating the state in which the printing apparatus illustrated in Fig. 1 performs the test printing, and is a view illustrating a state in which the test printing is completed.
  • Fig. 5 is a schematic configuration view illustrating the state in which the printing apparatus illustrated in Fig.
  • Fig. 1 performs the test printing, and is a view illustrating a state in which the test medium is taken out from the mounting portion.
  • Fig. 6 is a view illustrating a carriage unit provided in the printing apparatus illustrated in Fig. 1 .
  • Fig. 7 is a view illustrating a carriage unit provided in the printing apparatus illustrated in Fig. 1 .
  • Fig. 8 is a view illustrating a state in which a head provided in the carriage unit illustrated in Fig. 7 forms a test printing pattern in a going passage.
  • Fig. 9 is a view illustrating a state in which the head provided in the carriage unit illustrated in Fig. 7 forms the test printing pattern in a returning passage.
  • Fig. 10 is a view illustrating a state in which the test printing pattern is formed on the test medium.
  • Fig. 11 is a view illustrating the state in which the test printing pattern is formed on the test medium.
  • Fig. 12 is a view illustrating the state in which the test printing pattern is formed on the test medium.
  • Fig. 13 is a view illustrating a part of an image in which a ruled line in the test printing pattern is read.
  • Fig. 14 is a view illustrating central coordinates of the ruled line in a plan view of the test medium.
  • Fig. 15 is a table illustrating an amount of correction of a discharging position of a head in a first correction and a second correction.
  • Fig. 16 is a flow chart illustrating a control operation a controller provided in the printing apparatus illustrated in Fig. 1 .
  • a depth direction onto a (paper) surface on which Fig. 1 is shown is referred to as an "x direction”
  • a horizontal direction is referred to as a “y direction”
  • a vertical direction is referred to as a "z direction”.
  • a direction in which an arrow of each direction points is referred to as "positive”, and an opposite direction thereof is referred to as "negative”.
  • coordinate axes of Figs. 3 to 12 , and 14 respectively correspond to a coordinate axis in Fig. 1 .
  • the printing apparatus 1 illustrated in Figs. 1 , and 3 to 5 is provided with a printing portion 13 performing printing by discharging inks 100 to the work W as a recording medium, a transporting portion 12 as a transporting belt including a mounting portion 17 in which the test medium 200 where a test printing is performed by discharging the inks 100 before performing printing is mounted, and an opening portion 181 as a guide portion guiding the test medium 200 to the mounting portion 17 at the time of mounting the test medium 200 in the mounting portion 17.
  • the test medium 200 can be easily and smoothly mounted in the mounting portion 17 through the opening portion 181. Accordingly, the test printing can be easily and smoothly performed.
  • the printing method of the invention performs printing using the printing apparatus 1 which is provided with a transporting belt as part of the transporting portion 12 transporting the work W as the recording medium.
  • the printing portion 13 performs printing by discharging inks 100 with respect to the work W, and the mounting portion 17 is provided on the transporting portion 12.
  • the test medium 200 having flexibility is mounted to the mounting portion 12 before performing printing, and the opening portion 181 acts as the guide portion guiding the test medium 200 to the mounting portion 17 at the time of mounting the test medium 200 in the mounting portion 17.
  • the printing method is a test printing process performing the test printing using a medium having higher stiffness than the work W as the test medium 200.
  • the test medium 200 can be more easily and smoothly mounted in the mounting portion 17 than a case in which a medium as the test medium made of the same material as that of the work W is used as the related art for example where the work W is made of fabric. Accordingly, the test printing can be easily and smoothly performed.
  • the printing apparatus 1 performs a printing method of the invention, and is provided with a machine base 11, a transporting portion (transporting belt) 12 transporting the work W as a recording medium, a printing portion (recording portion) 13 performing printing by applying the inks 100 onto the work W, a drying portion 2 drying the inks 100 on the work W, and a lifting mechanism 14.
  • a direction orthogonal to the transporting direction where the work W is transported is set as an x axis direction
  • a direction parallel to the transporting direction is set as a y axis direction
  • a direction orthogonal to the x axis direction and the y axis direction is set as a z axis direction.
  • the transporting portion 12 is provided with a feeding device 3 which feeds the long work W wound around in a roll shape, a winding device 4 which winds the printed work W, and a supporting device 5 which is disposed on the machine base 11 and supports the work W at the time of printing.
  • the feeding device 3 is disposed on an upstream side of the machine base 11 in a sending direction (y axis direction) of the work W.
  • the feeding device 3 includes a sending roller (feeding roller) 31 in which the work W is wound in a roll shape and sends the work W, and a tensioner 32 applying tension to the work W between the sending roller 31 and the supporting device 5.
  • a motor (not illustrated) is connected to the sending roller 31, and the sending roller 31 can be rotated by an operation of the motor.
  • materials to be printed can be used as the work W.
  • the materials to be printed means fabrics, clothes, other clothing products, or the like which is a target to be printed.
  • the fabrics include natural fibers such as cotton, silk, and wool, chemical fibers such as nylon, or composite fibers such as woven fabrics, knitted fabrics, or nonwoven fabrics obtained by mixing the fibers described above.
  • clothes or other clothing products, fabrics or the like before and after cutting which presents as parts in a state of before sewing are also included, in addition to types of articles such as T-shirts, handkerchiefs, scarves, towels, handbags, fabric bags, curtains, sheets, or bed covers after sewing.
  • paper for ink jet recording such as plain paper, high quality paper, and glossy paper can be used.
  • a material in which plastic is coated on a base material such as a plastic film for ink jet printing on which a surface thereof is not processed (that is, ink absorbing layer is not formed) and a paper, a material in which a plastic film is adhered, and a plastic film alone can be used.
  • the plastic it is not particularly limited, and for example, there are polyvinyl chloride, polyethylene terephthalate, polycarbonate, polystyrene, polyurethane, polyethylene, and polypropylene.
  • the winding device 4 is disposed on a downstream side of the machine base 11 in the feeding direction (y axis direction) of the work W with respect to the feeding device 3.
  • the winding device 4 includes a winding roller (winding reel) 41 which winds the work W in a roll shape, and tensioners 42 and 44 which apply tension to the work W between the winding roller 41 and the supporting device 5.
  • a motor (not illustrated) is connected to the winding roller 41, and the winding roller can be rotated by an operation of the motor.
  • the tensioners 42 and 44 are sequentially disposed at an interval in a direction where the tensioners are respectively distant away from the winding roller 41.
  • the supporting device 5 is disposed between the feeding device 3 and the winding device 4.
  • the supporting device 5 includes a driving roller 51 and a driven roller 52 which are disposed to be distant away from each other in the y axis direction, an endless belt 53 which is disposed over the driving roller 51 and the driven roller 52 and supports the work W on a upper surface (supporting surface), and a pressurizing roller 54 which presses and fixes the work W to the belt.
  • a motor (not illustrated) is connected to the driving roller 51, and the driving roller can be rotated by the operation of the motor.
  • a rotation force of the driving roller 51 is transmitted to the driven roller 52 through the endless belt 53, and thus the driven roller 52 can be rotated in conjunction with the driving roller 51.
  • the endless belt 53 is a belt on which an adhesive layer having adhesiveness is formed on a front side of the surface. A part of the work W is adhered and fixed to the adhesive layer, and is transported in the y axis direction. Also, during the transporting, printing is performed on the work W. In addition, after printing is performed, the work W is peeled off from the endless belt 53.
  • the printing portion 13 illustrated in Fig. 1 includes a carriage unit 130 which performs recording due to printing by discharging the inks 100 onto the work W.
  • the carriage unit 130 includes the head unit 131B discharging the ink 100 of black (B), the head unit 131C discharging the ink 100 of cyan (C), the head unit 131M discharging the ink 100 of magenta (M), and the head unit 131Y discharging the ink 100 of yellow (Y).
  • the head unit 131B, the head unit 131C, the head unit 131M, and the head unit 131Y are sequentially disposed side by side from a positive side to a negative side of the x axis direction.
  • the head unit 131B, the head unit 131C, the head unit 131M, and the head unit 131Y have the same configuration except that colors of the inks 100 being discharged are different from each other, hereinafter only the head unit 131B will be representatively described.
  • the head unit 131B includes a plurality of heads 132 (16 heads in the embodiment). Each head 132 includes a plurality of nozzles 133, and each of the nozzles 133 is aligned in the y axis direction (one direction) (refer to Fig. 8 ).
  • a piezoelectric element piezoelectric member corresponding to each discharging nozzle is provided, and the inks 100 are discharged as droplets from each nozzle 133 when a voltage is applied to the piezoelectric element.
  • the carriage unit 130 is in standby at a position (standby position) deviated from (or not over) the work W (endless belt 53) in a state of not discharging the inks 100, seen from the z axis direction.
  • the printing apparatus 1 intermittently sends (sub-scans) the work W in the y axis direction in a fixing state in which the work W fed by the feeding device 3 is adhered and fixed to the endless belt 53, and discharges the inks 100 from the carriage unit 130 while reciprocating (main-scanning) the carriage unit 130 in the x axis direction with respect to the work W in the fixing state.
  • This process can be performed until printing is completed and an image pattern is formed on the work W.
  • the image pattern may be made in a multicolor-printing (color printing) manner or a monochromatic printing manner.
  • the inks 100 for example, there are four colors of cyan (C), magenta (M), yellow (Y), and black (B) including a dye or pigment as a colorant in water as a solvent. Also, each color of the inks 100 are independently discharged from the heads 132.
  • the lifting mechanism 14 illustrated in Figs. 1 and 2 is capable of adjusting a height of the carriage unit 130.
  • the lifting mechanism 14 can be configured with, for example, a motor, a ball screw, and a linear guide.
  • an encoder is built in.
  • the height of the carriage unit 130 can be detected based on an amount of rotation detected by the encoder.
  • Such a lifting mechanism 14 is also electrically connected to the controller 15.
  • the lifting mechanism 14 is capable of changing a separating distance between the carriage unit 130 and the work W. Accordingly, printing can be appropriately performed depending on a material of the work W. Further, at the time of using the test medium 200 having different thickness from the work W, a separating distance between the test medium 200 and the heads 132 at the time of the test printing is adjusted so as to be equal to a separating distance between the work W and the heads 132.
  • the drying portion 2 is positioned on a downstream side of the printing portion 13 in the transporting direction of the work W, and disposed between the supporting device 5 and the winding roller 41 of the winding device 4.
  • the drying portion 2 includes a chamber 21, and a coil 22 disposed inside the chamber 21.
  • the coil 22 is made of, for example, a nichrome wire, and is a heating element that generates heat by supplying electricity. Also, the inks 100 on the work W passing through the chamber 21 can be dried due to heat generated by the coil 22.
  • a supporting portion 16 supporting the endless belt 53 (transporting belt) from the inside is provided inside the endless belt 53 and on an upstream side of the printing portion 13 in the transporting direction. Therefore, in the endless belt 53 (belt), a part being supported by the supporting portion 16 functions as the mounting portion 17. Accordingly, the test medium 200 to be described later can be stably mounted on the mounting portion 17.
  • the supporting portion 16 is an iron plate provided inside the endless belt 53, and has a plate shape having higher stiffness than the endless belt 53 (transporting belt). At the time of mounting the test medium 200, even when the test medium 200 is pressed from the top, it is possible to prevent the belt 53 from being deformed because the supporting portion supports the belt.
  • the supporting portion 16 has a size of a degree that is capable of sufficiently covering the test medium 200 in plan view thereof. Accordingly, the test medium 200 to be described later can be stably mounted on the mounting portion 17, and deformation of the test medium 200 is prevented, and thereby a test pattern can be more accurately printed. Also, in the endless belt 53, a flat part supported by the supporting portion 16 can be also referred to as a guide portion.
  • the controller (adjusting section) 15 is electrically connected to the drying portion 2, the transporting portion 12, the printing portion 13, and the lifting mechanism 14, and has a function of controlling operations of these components.
  • the controller 15 includes a central processing unit (CPU) 151, and a storage portion 152.
  • the CPU 151 executes programs for various processes such as the printing process described above.
  • the storage portion 152 includes, for example an electrically erasable programmable read-only memory (EEPROM) or the like which is a type of nonvolatile semiconductor memory, and is capable of storing various programs and the like.
  • EEPROM electrically erasable programmable read-only memory
  • Such a printing apparatus 1 is covered with a cover 18.
  • the cover 18 covers at least the transporting portion 12 and the printing portion 13. Accordingly, the transporting portion 12 and the printing portion 13 can be protected.
  • an opening portion 181 is provided in the cover 18, which penetrates the cover in a thickness direction thereof.
  • the opening portion 181 is provided on the upstream side of the printing portion 13 in the transporting direction of the work W.
  • the test medium 200 can be mounted on the mounting portion 17 through the opening portion 181.
  • the printing apparatus 1 described above performs a test printing using the test medium 200 before performing printing on the work W. Also, the test medium 200 on which the test printing is performed is read by a scanner as an image, and the discharging position of each head 131 is corrected based on the image. Such a test printing and correction of the discharging position are performed, and thus printing can be performed on the work W with high accurately.
  • the test medium 200 has a rectangular sheet shape in which a length is approximately 400 mm, and a width is approximately 250 mm.
  • the test medium 200 is paper having higher stiffness than the work W (recording medium). Accordingly, the test medium 200 can be more difficult to be deformed than the work W, and thus the test printing can be more accurately performed than a case printing is performed on the work W.
  • the test medium 200 may have a size which can be read by the scanner, or smaller size. Meanwhile, in consideration of adjusting all the heads 132, it is desirable that the size is greater than a carriage capable of mounting all the heads 132. As the printing apparatus 1 of the embodiment, in a case in which the carriage is greater than the size, in order to adjust all the heads 132, the test printing pattern is used by being divided using a method to be described later.
  • the test medium 200 is disposed on the mounting portion 17.
  • the test medium 200 can be disposed by inserting a hand to the inside of the cover 18 through the opening portion 181 of the cover 18 from the outside. That is, the opening portion 181 provided on the cover (cover member) 18 functions as a guide portion which guides the test medium 200 to the mounting portion 17 when the test medium 200 is mounted on the mounting portion 17. Accordingly, the test medium 200 can be easily mounted on the mounting portion 17.
  • the test medium 200 can be laid on top of the work W in some cases.
  • the opening portion 181 is provided on the upstream side of the printing portion 13 in the transporting direction of the work W (recording medium). Accordingly, the test medium 200 can be easily mounted on the mounting portion 17 which is provided on the upstream side of the printing portion 13 in the transporting direction.
  • a test printing pattern to be described later is printed while the test medium 200 is transported to a y axis positive side by rotating the driving roller 51 in an arrow ⁇ 51 direction of Fig. 4 .
  • the test medium 200 at this time is transported by the endless belt 53, but is not applied to (does not pass over or does not start to pass around) the driving roller 51 and the driven roller 52.
  • the driving roller 51 and the driven roller 52 are disposed at a sufficient interval. Therefore, a flat surface portion of the endless belt 53 has a length of a degree at which the test medium 200 does not reach either of the driving roller 51 or the driven roller 52 during the test printing. Accordingly, the test medium 200 is not deformed during the test printing in accordance with the driving roller 51 or the driven roller 52, and applying tension to the test medium 200 can be prevented. Accordingly, the test printing can be more accurately performed.
  • the test medium 200 is transported to a y axis negative side until the test medium 200 is positioned on the mounting portion 17 by rotating the driving roller 51 in an arrow ⁇ 51' direction of Fig. 5 . Also, the test medium 200 is taken out through the opening portion 181.
  • test printing is performed as described above and is read as an image using the scanner, and based on the image, the correction of the discharging position of each head 132 is performed.
  • the correction of the discharging position of each head 132 will be described.
  • the carriage unit 130 is considered to be divided into three groups of the first group G1, the second group G2, and the third group G3. Since this group division is also performed in the head unit 131B, the head unit 131C, the head unit 131M, and the head unit 131Y, hereinafter, the head unit 131B will be representatively described. Also, as illustrated in Figs. 10 to 12 , and 14 , in the test medium 200, a reference line at the time of reading by the scanner is attached in a vertical direction and a horizontal direction in drawings. Accordingly, reading can be accurately performed.
  • each head 132 means, in order from a lower side of Figs. 6 and 7 , a head 132a, a head 132b, a head 132c, a head 132d, a head 132e, a head 132f, a head 132g, a head 132h, a head 132i, a head 132j, a head 132k, a head 132L, a head 132m, a head 132n, a head 132o, and a head 132p.
  • the head 132a, the head 132b, the head 132c, the head 132d, the head 132e, and the head 132f are set as the first group G1.
  • the head 132f, the head 132g, the head 132h, the head 132i, the head 132j, and the head 132k are set as the second group G2.
  • the head 132k, the head 132L, the head 132m, the head 132n, the head 132o, and the head 132p are set as the third group G3.
  • the first group G1 and the second group G2 share one head 132f
  • the head 132f being shared is set as a first reference head
  • the second group G2 and the third group G3 share one head 132k
  • the head 132k being shared is set as a second reference head.
  • the head 132a, the head 132b, the head 132c, the head 132d, and the head 132e are the first correction target head
  • the head 132g, the head 132h, the head 132i, and the head 132j are the second correction target head
  • the head 132L, the head 132m, the head 132n, the head 132o, and the head 132p are the third correction target head.
  • test printing that is, a test printing process (printing process) is performed.
  • test printing pattern P being printed during the test printing will be described with reference to Fig. 8 .
  • Fig. 8 is a plan view of the test medium 200, and is a view illustrating a part of the test printing pattern P printed on the test medium 200.
  • the head 132f among these heads 132 is representatively illustrated.
  • two ruled lines L (B) are printed using the head 132f of the head unit 131B.
  • the two ruled lines L (B) are printed side by side along the y axis direction.
  • Each ruled line L (B) is printed by discharging the inks 100 from the nozzles 133 at a position corresponding to two ruled lines L (B) among a plurality of nozzles 133 of the head 132f of the head unit 131B.
  • one ruled line L (B) is printed using the head 132f of the head unit 131B while moving the head unit 131B in an arrow ⁇ 130 ' direction of Fig. 9 .
  • the one ruled line L (B) is printed between the printed two ruled lines L(B).
  • each head may form the three ruled lines L (B) along the Y axis direction in order of the going passage, the returning passage, and the going passage, or in order of the returning passage, the going passage, and the returning passage, or these two patterns may be mixed. If there is a position deviation such as rotation of each head 132 in a Z axis direction, when the two patterns are mixed, an error of inclination can be reduced, but as the embodiment, even when all the heads 132 form the three ruled lines L (B) along the Y axis direction in order of the going passage, the returning passage, and the going passage, the inclination also can be reduced. This is because the position deviation of the center of each ruled line can be more reduced by forming three ruled lines than a case of forming two lines.
  • the ruled line L (C), the ruled line L (M), and the ruled line L (Y) are printed in a passage the same as a passage where the ruled line L (B) is printed, that is, is printed in one round trip of the going passage and the returning passage.
  • the head 132f is described, but as illustrated in Fig. 10 , even in the head 132a, the head 132b, the head 132c, the head 132d, and the head 132e, each ruled line is printed by discharging the inks 100 in the same manner as the head 132f which prints each ruled line. Accordingly, as illustrated in Fig. 10 , the test printing pattern P1 is formed on the test medium 200 by the head 132a, the head 132b, the head 132c, the head 132d, the head 132e, and the head 132f.
  • the test printing pattern P2 is printed using the head 132f, the head 132g, the head 132h, the head 132i, the head 132j, and the head 132k, in the same manner as the test printing pattern P1.
  • the test printing pattern P2 is formed on the x axis direction negative side of the test printing pattern P1.
  • a test printing pattern P3 is printed using the head 132k, the head 132L, the head 132m, the head 132n, the head 132o, and the head 132p in the same manner as the test printing pattern P1 and the test printing pattern P2.
  • the test printing pattern P3 is formed on the x axis direction negative side of the test printing pattern P2.
  • test printing pattern P constituted by the test printing pattern P1, the test printing pattern P2, and the test printing pattern P3 is printed.
  • the ruled line printed by the head 132f is the first reference printing pattern
  • the ruled line printed by the head 132k is the second reference printing pattern
  • ruled lines printed by the head 132a, the head 132b, the head 132c, the head 132d, and the head 132e are a first correction target pattern
  • ruled lines printed by the head 132g, the head 132h, the head 132i, and the head 132j are a second correction target pattern
  • ruled lines printed by the head 132L, the head 132m, the head 132n, the head 132o, and the head 132p are a third correction target pattern.
  • the first reference printing pattern, the second reference printing pattern, the first correction target pattern, the second correction target pattern, and the third correction target pattern respectively have a linear shape along the y axis direction (one direction). Accordingly, the center of each ruled line can be easily detected.
  • Step S101 the test printing pattern P is read by the scanner as an image. Also, correction is performed based on the read image in steps as follows.
  • Step S102 central coordinates in the x axis direction of the ruled line L (B), the ruled line L (C), the ruled line L (M), and the ruled line L (Y) in the going passage of the head 132a, the head 132b, the head 132c, the head 132d, the head 132e, the head 132f, the head 132g, the head 132h, the head 132i, the head 132j, the head 132k, the head 132L, the head 132m, the head 132n, the head 132o, and the head 132p are respectively calculated.
  • a coordinate Xmax positioned on the most x axis direction positive side is detected, and a coordinate Xmin positioned on the most x axis direction negative side is detected. Also, a center point in the x axis direction of the coordinate Xmax and the coordinate Xmin is detected. That is, (Xmax+Xmin)/2 is calculated. A calculated result is set as a central coordinate.
  • Step S102 in the same manner as the ruled line L (B), central coordinates of the ruled line L (C), the ruled line L (M), and a ruled line L (Y) in all the going passages are calculated.
  • each of the ruled line L (B), the ruled line L (C), the ruled line L (M), and the ruled line L (Y) of the head 132a, the head 132b, the head 132c, the head 132d, the head 132e, the head 132f, the head 132g, the head 132h, the head 132i, the head 132j, the head 132k, the head 132L, the head 132m, the head 132n, the head 132o, and the head 132p is similar, and thus the mark of the ruled line L (B) is representatively illustrated.
  • Step S103 central coordinates in the x axis direction of the ruled line L (B), the ruled line L (C), the ruled line L (M), and the ruled line L (Y) in the returning passage of the head 132a, the head 132b, the head 132c, the head 132d, the head 132e, the head 132f, the head 132g, the head 132h, the head 132i, the head 132j, the head 132k, the head 132L, the head 132m, the head 132n, the head 132o, and the head 132p are calculated.
  • Step S103 in the same manner as Step S102, the central coordinates are respectively calculated.
  • Step S104 an amount of correction of the discharging position of each head 132 is calculated.
  • the correction is performed in each of the first group G1, the second group G2, and the third group G3 described above.
  • this correction will be described based on a table illustrated in Fig. 15 .
  • the ruled line L (B) will be representatively described.
  • the ruled line L (B) will be representatively described even in the table illustrated in Fig. 15 .
  • the central coordinate of the ruled line L (B) of the going passage of the head 132a is set as X1
  • the central coordinate of the ruled line L (B) of the going passage of the head 132b is set as X2
  • the central coordinate of the ruled line L (B) of the going passage of the head 132c is set as X3
  • the central coordinate of the ruled line L (B) of the going passage of the head 132d is set as X4
  • the central coordinate of the ruled line L (B) of the going passage of the head 132e is set as X5
  • the central coordinate of the ruled line L (B) of the going passage of the head 132f is set as X6
  • the central coordinate of the ruled line L (B) of the going passage of the head 132g is set as X7
  • the central coordinate of the ruled line L (B) of the going passage of the head 132h is set as X8, the central coordinate of the ruled line L (B) of the going passage
  • the correction of the discharging position of the head 132 of the first group G1 that is, the head 132a, the head 132b, the head 132c, the head 132d, the head 132e, and the head 132f will be described.
  • the amount of correction of the going passage of the head 132a is a value obtained by subtracting the central coordinate of the ruled line L (B) of the head 132f from the central coordinate of the ruled line L (B) of the head 132a, that is, X1-X6 is the amount of correction.
  • the amount of correction of the going passage of the head 132b is set as X2-X6.
  • the amount of correction of the going passage of the head 132c is set as X3-X6.
  • the amount of correction of the going passage of the head 132d is set as X4-X6.
  • the amount of correction of the going passage of the head 132e is set as X5-X6.
  • the amount of correction of the going passage of the head 132f is set as X6-X6, that is, the head 132f is a first reference, and thus the correction of the discharging position is not performed thereon.
  • the central coordinate X6 of the ruled line L (B) of the head 132f which is the first correction target pattern is set to a reference, the amounts of correction of the discharging positions of the head 132a, the head 132b, the head 132c, the head 132d, and the head 132e are calculated.
  • the correction of the head 132 of the second group G2 is performed based on the central coordinate X6 of the ruled line L (B) of the head 132f of the test printing pattern P2, which is printed as the second group G2, as a reference.
  • the amount of correction of the head 132f is set as X6-X6, that is, since the head 132f is the first reference, the correction of the discharging position is not performed.
  • the amount of correction of the going passage of the head 132g is set as X7-X6.
  • the amount of correction of the going passage of the head 132h is set as X8-X6.
  • the amount of correction of the going passage of the head 132i is set as X9-X6.
  • the amount of correction of the going passage of the head 132j is set as X10-X6.
  • the amount of correction of the going passage of the head 132k is set as X11-X6.
  • the amounts of correction of the discharging positions of the head 132g, the head 132h, the head 132i, the head 132j, and the head 132k are calculated based on the central coordinate X6 of the ruled line L (B) of the head 132f, which is the first correction target pattern, as a reference.
  • the correction of the heads 132 of the second group G2 is performed based on the central coordinate X6 of the ruled line L (B) of the head 132f of the test printing pattern P2, which is printed as the second group G2, as a reference, and thus the heads 132 of the second group G2 are capable of printing at the same degree as the heads of the first group G1. That is, even when the correction in the first group G1 and the second group G2 are performed with not one reading image but different reading images from each other, the correction can be accurately performed in the same way as a case of correcting with one reading image.
  • the correction of the heads 132 of the third group G3 is performed based on the ruled line L (B) of the head 132f which is the first reference printing pattern and the ruled line L (B) of the head 132k which is the second reference printing pattern.
  • Correction of the head 132L is performed based on the central coordinate X6 of the ruled line L (B) of the head 132f and the ruled line L (B) of the head 132k as a reference.
  • the amount of correction of the head 132L is set as (X12-X11)+(X11-X6). That is, in the correction of the head 132L, first, an amount of deviation between a central coordinate X12 of the ruled line L (B) of the head 132L and a central coordinate X11 of the ruled line L (B) of the head 132k is calculated, and an amount of deviation between the central coordinate X11 of the ruled line L (B) of the head 132k and the central coordinate X6 of the ruled line L (B) of the head 132f is added to a calculated value thereof.
  • an amount of correction of the head 132m is set as (X13-X11)+(X11-X6).
  • An amount of correction of the head 132n is set as (X14-X11)+(X11-X6).
  • An amount of correction of the head 132o is set o (X15-X11)+(X11-X6).
  • An amount of correction of the head 132p is set as (X16-X11)+(X11-X6).
  • an amount of correction of the head 132k is set as (X11-X11)+(X11-X6), that is, the correction of the head 132k is performed based on the ruled line L (B) of the head 132f as a reference.
  • a range in which the scanner is capable of performing reading at one time becomes a length of the Y axis direction of the test printing pattern P1 (the same for the test printing pattern P2 and the test printing pattern P3), even when correction of the discharging positions of the heads 132 of the third group G3 is performed based on the ruled line L (B) of the head 132f of the first group G1, it is difficult to accurately perform the correction of the discharging position.
  • the heads 132 of the third group G3 are relatively deviated from the head 132f, it is difficult to perform the correction of their discharging position as accurately as the correction of the second group D2.
  • the correction of the heads 132 of the third group G3 is performed based on the ruled line L (B) of the head 132f which is the first reference printing pattern and the ruled line L (B) of the head 132k which is the second reference printing pattern, even when the correction of the first group G1, the second group G2, and the third group G3 are performed with not one reading image but different reading images from each other, the correction can be performed as accurately as a case of correcting with one reading image.
  • a central coordinate of the ruled line L (B) in the returning passage of the head 132a is set as X1'
  • a central coordinate of the ruled line L (B) in the returning passage of the head 132b is set as X2'
  • a central coordinate of the ruled line L (B) in the returning passage of the head 132c is set as X3'
  • a central coordinate of the ruled line L (B) in the returning passage of the head 132d is set as X4'
  • a central coordinate of the ruled line L (B) in the returning passage of the head 132e is set as X5'
  • a central coordinate of the ruled line L (B) in the returning passage of the head 132f is set as X6'
  • a central coordinate of the ruled line L (B) in the returning passage of the head 132g is set as X7'
  • a central coordinate of the ruled line L (B) in the returning passage of the head 132h is set as X8'
  • An amount of correction of the returning passage of the head 132a is X1'-X6.
  • An amount of correction of the returning passage of the head 132b is X2'-X6.
  • An amount of correction of the returning passage of the head 132c is X3'-X6.
  • An amount of correction of the returning passage of the head 132d is X4'-X6.
  • An amount of correction of the returning passage of the head 132e is X5'-X6.
  • An amount of correction of the returning passage of the head 132f is X6'-X6.
  • An amount of correction of the returning passage of the head 132g is X7'-X6.
  • An amount of correction of the returning passage of the head 132h is X8'-X6.
  • An amount of correction of the returning passage of the head 132i is X9'-X6.
  • An amount of correction of the returning passage of the head 132j is X10'-X6.
  • An amount of correction of the returning passage of the head 132k is X11'-X6.
  • the amount of correction of the returning passage of the head 132k is (X11'-X11)+(X11-X6).
  • the amount of correction of the returning passage of the head 132L is (X12'-X11)+(X11-X6).
  • the amount of correction of the returning passage of the head 132m is (X13'-X11)+(X11-X6).
  • the amount of correction of the returning passage of the head 132n is (X14'-X11)+(X11-X6).
  • the amount of correction of the returning passage of the head 132o is (X15'-X11)+(X11-X6).
  • the amount of correction of the returning passage of the head 132p is (X16'-X11)+(X11-X6).
  • the correction of the discharging positions of the heads 132 of the first group G1 and the second group G2 are performed based on the ruled line L (B) of the head 132f
  • the correction of the discharging positions of the heads 132 of the third group G3 is performed based on the ruled line L (B) of the head 132f and the ruled line L (B) of the head 132k. That is, the first correction and the second correction are performed on both the going passage and the returning passage. Accordingly, in the same manner as the correction of the discharging position on the going passage, the correction of the discharging position can be accurately performed even in the returning passage.
  • the correction of the discharging position is performed on both the going passage and the returning passage based on the ruled line L (B) of the head 132f in the going passage or the ruled line L (B) of the head 132k in the going passage as a reference, and thus landing positions of the inks 100 in the going passage and the returning passage can be matched, and the control operation can be more simplified.
  • Step S105 based on the amount of correction calculated in Step S104, the printing is performed while correcting the discharging position of each head. Accordingly, the printing can be performed clearly.
  • the correction of the discharging position is performed based on an integer obtained by dividing the discharging position by a minimum resolution of the printing apparatus 1. Accordingly, the correction of the discharging position can be more accurately performed.
  • the first correction is performed in which the discharging position is changed by an amount of deviation between the central coordinate (center) of the ruled line L (B) of the head 132f as the first reference printing pattern and the central coordinate (center) of the ruled line L (B) which is the first correction target pattern printed by the heads of the first group G1 132, which is the first correction target head, and the discharging position is changed by an amount of deviation between the central coordinate (center) of the ruled line L (B) of the head 132f as the first reference printing pattern and the central coordinate (center) of the ruled line L (B) which is the second correction target pattern printed by the heads 132 as the second correction target head. Accordingly, the discharging position of the first correction target head can be accurately corrected.
  • correction is performed in which the discharging position is changed, by an amount obtained by adding the amount of deviation between the central coordinate (center) of the ruled line L (B) of the head 132k as the second reference printing pattern and the central coordinate (center) of the ruled line L (B) of the head 132p which is the third correction target pattern printed by the heads 132 of the third group G3, which is the third correction target head, to the amount of deviation between the central coordinate (center) of the ruled line L (B) of the head 132f which is the first reference printing pattern and the central coordinate (center) of the ruled line L (B) of the head 132k which is the second reference printing pattern. Accordingly, the correction of the discharging positions of the heads of the third group G3, which is positioned at a position distant away from the first reference head, can be accurately performed.
  • the printing apparatus 1 includes a plurality of the head units which respectively discharge the inks 100 having different colors from each other, and in the test printing process (printing process), the first correction and the second correction of each head unit are performed for the heads for each color. Accordingly, the correction of the discharging position of each head unit can be accurately performed, and the correction of the discharging position of all the heads can be accurately performed.
  • the printing process is a test printing process which is performed before performing printing with respect to the work W as the recording medium. Accordingly, the first correction and the second correction described above can be performed before performing printing with respect to the work W, and printing on the work W can be accurately performed.
  • the test printing pattern P obtained by mounting the test medium 200 on the belt 53 and performing printing thereon is read as an image using the scanner by detaching the test medium 200 from the belt 53. Accordingly, when the test medium 200 is detached from the belt, or after the test medium is detached from the belt, the test medium 200 is deformed and becomes a different shape from an original medium at the time of being positioned on the belt, a shape of the test printing pattern P printed thereon is also changed, and thus the correction is not appropriately performed.
  • the test medium 200 is paper or the like and is a member more difficult to be deformed than the work W which is a fabric, deformation of the test medium is suppressed, and correction is more accurately performed.
  • test medium 200 since a part in which the test medium 200 is mounted is wider than the test medium 200, and is supported by a member which is more difficult to be deformed than the belt 53, when the test medium is adhered to or peeled off from the belt, deformation of the test medium is suppressed, the correction is more appropriately performed.
  • test medium 200 is moved in the transporting direction at the time of printing the test printing patterns P1, P2, and P3 described above, but the test medium 200 is not applied to a part of a driving roller and a driven roller of the belt 53, the test medium 200 is not deformed during the test printing, and the test printing can be performed with high accuracy.
  • test printing is generally performed before printing on the work W, but in a case in which a landing position may be deviated or nozzles may be clogged during printing, the printing on the work W can be stopped.
  • the test medium 200 is mounted on or near the work W, but the test medium 200 is mounted on the work W during printing in a case in which a width of the work W is wide and a part where the work W on the belt 53 is not applied is narrow.
  • the test medium 200 may be mounted so as to be applied to the work W on the belt 53.
  • the test medium 200 is adjusted by the lifting mechanism 14 so that a gap between the test medium 200 and the heads 132 is equal to a gap between the work W and the heads 132 at the time of printing on the work W.
  • each color is disposed in the y axis direction in one row, but in the invention, it is not limited thereto, and for example, plural types of colors may be mixed in each row (refer to Fig. 18 ). Accordingly, the correction can be performed between the heads 132 of each color.
  • Fig. 17 is a schematic side view illustrating a second embodiment of the printing apparatus of the invention.
  • the second embodiment is the same as the first embodiment except that a forming position of the guide portion is different.
  • the opening portion 181 is provided on a downstream side of the printing portion 13 in the transporting direction of the work W (recording medium). Accordingly, the test medium 200 can be easily mounted on the mounting portion 17 provided on a downstream side of the printing portion 13 in the transporting direction.
  • the printing apparatus 1 of the embodiment includes the scanner 19.
  • the scanner 19 is provided on a downstream side of the printing portion 13 in the transporting direction of the recording medium.
  • the scanner 19 reads the test medium 200 where the inks 100 are discharged as an image. Accordingly, after the test printing is completed, as the first embodiment, a process in which the test medium 200 is taken out and is read by a separate scanner can be omitted. That is, a test printing process and a scanning process can be automatically performed. Irrespective of whether the scanner 19 is provided, the opening 181 may be provided upstream, downstream or both upstream and downstream.
  • each portion constituting the printing apparatus can be substituted for an arbitrary configuration which exerts the same function.
  • an arbitrary configuration material may be added.
  • the printing apparatus and the printing method of the invention may be a combination of arbitrary two or more configurations (features) among the above embodiments.
  • the number of colors of the inks being used in the printing apparatus is four colors in each embodiment described above, but it is not limited thereto, and for example, one colour, two colors, three colors, five colors, or more may be used.
  • the transporting portion includes the endless belt which fixes the work by an adhering manner in the embodiments described above, but it is not limited thereto, and for example, the transporting portion may include a platen (stage) which fixes the work by a suction manner.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Ink Jet (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Coloring (AREA)
  • Handling Of Sheets (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
EP17205731.7A 2016-12-07 2017-12-06 Druckvorrichtung und druckverfahren Active EP3332977B1 (de)

Applications Claiming Priority (1)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090256877A1 (en) * 2008-04-10 2009-10-15 Seiko Epson Corporation Method of calculating correction value, correctioin value calculating program, and liquid ejecting apparatus
JP2013193303A (ja) 2012-03-19 2013-09-30 Canon Inc インクジェット記録装置およびインクジェット記録方法
US20140192110A1 (en) * 2013-01-07 2014-07-10 Seiko Epson Corporation Test method
JP2015020408A (ja) 2013-07-23 2015-02-02 キヤノン株式会社 画像記録方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005212266A (ja) * 2004-01-29 2005-08-11 Konica Minolta Holdings Inc インクジェット記録装置
US8167423B2 (en) * 2007-12-28 2012-05-01 Seiko Epson Corporation Ink jet apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090256877A1 (en) * 2008-04-10 2009-10-15 Seiko Epson Corporation Method of calculating correction value, correctioin value calculating program, and liquid ejecting apparatus
JP2013193303A (ja) 2012-03-19 2013-09-30 Canon Inc インクジェット記録装置およびインクジェット記録方法
US20140192110A1 (en) * 2013-01-07 2014-07-10 Seiko Epson Corporation Test method
JP2015020408A (ja) 2013-07-23 2015-02-02 キヤノン株式会社 画像記録方法

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EP3332977B1 (de) 2023-08-02
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