Inkjet recording apparatus and inkjet recording method for textile printing

JP7875346B2Active Publication Date: 2026-06-17KYOCERA CORP
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
KYOCERA CORP
Filing Date
2025-05-21
Publication Date
2026-06-17

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Abstract

To solve a problem where a time from impact of a pre-treatment liquid to impact of a post-treatment liquid varies depending on an image position, and as a result, image quality easily varies.SOLUTION: An inkjet recording device includes a conveyance part, a carriage, a plurality of ink head arrays, a pre-treatment head, and a post-treatment head. The pre-treatment head discharges a non-color-developing pre-treatment liquid. The post-treatment head discharges a non-color-developing post-treatment liquid. When a head arranged on a side closest to one end in a main scanning direction is used as a one end side head, and a head arranged on a side closest to the other end is used as an other end side head, and when a distance in the main scanning direction between the one end side head and the other end side head is represented by LC; a distance in the main scanning direction between the one end side head and the pre-treatment head is represented by B1; and a distance in the main scanning direction between the one end side head and the post-treatment head is represented by B2, a relation of |(B1-B2) / LC|≤1 / 2 is satisfied. Thereby, density variation of color development can be reduced.SELECTED DRAWING: Figure 7
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Claims

1. A conveying unit that conveys a recording medium made of fabric in a predetermined conveying direction, A carriage that moves back and forth in the main scanning direction intersecting the transport direction, An ink head array for image formation is ejected onto a predetermined recording area of ​​the fabric, and one array of ink head arrays mounted on the carriage at a predetermined position in the transport direction, or an odd number of arrays of ink heads mounted on the carriage so as to be aligned in the transport direction, A pre-treatment head is mounted on the carriage at a predetermined position in the transport direction and discharges a non-coloring pre-treatment liquid that lands on the recording area of ​​the fabric before the ink, A post-processing head is mounted on the carriage at a predetermined position in the transport direction and discharges a non-coloring post-processing liquid that lands on the recording area of ​​the fabric after the ink, Equipped with, Each of the one or more inkhead rows includes a plurality of inkheads, each ejecting image-forming ink, arranged to be aligned in the main scanning direction. Inkjet recording apparatus for textile printing, wherein, among the plurality of ink heads, the pre-processing head and the post-processing head, the head located at the furthest end in the main scanning direction is called the one-end head, and the head located at the furthest end is called the other-end head, and the distance from the one-end head to the other-end head in the main scanning direction is LC, the distance from the one-end head to the pre-processing head in the main scanning direction is B1, and the distance from the one-end head to the post-processing head in the main scanning direction is B2, the pre-processing head and the post-processing head are arranged such that they satisfy the relationship in Equation 2. |(B1-B2) / LC|≦1 / 2 ... (Formula 2)

2. In the inkjet recording apparatus for textile printing according to claim 1, An inkjet recording apparatus for textile printing, wherein at least one of the pre-processing head and the post-processing head includes a plurality of processing heads arranged in the main scanning direction, and at least one of the plurality of processing heads is arranged to satisfy the relationship of formula 2.

3. In the inkjet recording apparatus for textile printing according to claim 1 or 2, An inkjet recording apparatus for textile printing, wherein the pre-processing head and the post-processing head are arranged within the range of the arrangement width of the plurality of ink heads in the main scanning direction.

4. In an inkjet recording apparatus for textile printing according to any one of claims 1 to 3, An inkjet recording apparatus for textile printing, wherein at least one of the pre-processing head and the post-processing head is positioned such that a portion of it is positioned between a pair of adjacent ink heads in the main scanning direction among a plurality of ink heads included in one of the ink head rows.

5. In an inkjet recording apparatus for textile printing according to any one of claims 1 to 4, The pre-processing head and the post-processing head are arranged such that a portion of them is adjacent to the ink head in the main scanning direction and the transport direction. The aforementioned plurality of ink heads include a plurality of ink heads of the same color that eject ink of the same color, An inkjet recording apparatus for textile printing, wherein, for each of the aforementioned same-color ink heads, when the number of adjacent processing heads among the pre-processing head and post-processing head in the main scanning direction and the transport direction is counted, the difference between the maximum and minimum counts is 1 or less.

6. In an inkjet recording apparatus for textile printing according to any one of claims 1 to 5, An inkjet recording apparatus for textile printing, wherein the pre-processing head, the post-processing head, and the plurality of ink heads are arranged separately in the main scanning direction.

7. In an inkjet recording apparatus for textile printing according to any one of claims 1 to 6, The carriage includes a first region where the ink head row is arranged, and a second region adjacent to the first region in the main scanning direction. The pre-processing head and the post-processing head are located in the second region of the inkjet recording apparatus for textile printing.

8. In an inkjet recording apparatus for textile printing according to any one of claims 1 to 7, An inkjet recording apparatus for textile printing, wherein the pre-processing head and the post-processing head are respectively located in the central region of the arrangement width of the ink head row in the main scanning direction.

9. In an inkjet recording apparatus for textile printing according to any one of claims 1 to 8, An inkjet recording apparatus for textile printing, wherein the pre-processing heads and the post-processing heads are arranged such that the arrangement or alignment centers of one or more pre-processing heads and the arrangement or alignment centers of one or more post-processing heads coincide in the main scanning direction.

10. In the inkjet recording apparatus for textile printing according to claim 9, When the number of heads in the larger of the pre-processing heads and the post-processing heads is m and the number of heads in the smaller of the two is n, the requirement m = n + an odd number is satisfied. An inkjet recording apparatus for textile printing, wherein the arrangement or center of the pre-processing head and the post-processing head coincides with the arrangement position of one of the plurality of ink heads in the main scanning direction.

11. In an inkjet recording apparatus for textile printing according to any one of claims 1 to 10, The carriage is further provided with a holding member that holds it in a state that allows it to reciprocate in the main scanning direction, The carriage includes an engaging portion, which is cantilevered to the retaining member by the engaging portion. An inkjet recording apparatus for textile printing, wherein the pre-processing head and the post-processing head, of which the head with the fewer number of heads is located on the engagement portion side of the carriage.

12. In an inkjet recording apparatus for textile printing according to any one of claims 1 to 11, The system further comprises a plurality of ink sub-tanks for supplying the ink to each of the plurality of ink heads in the ink head row, and a plurality of processing liquid sub-tanks for supplying either the pre-treatment liquid or the post-treatment liquid to each of the pre-treatment head and the post-treatment head, An inkjet recording apparatus for textile printing, wherein the plurality of ink sub-tanks are mounted on the carriage so as to be aligned in the main scanning direction, and the plurality of processing liquid sub-tanks are mounted on the carriage at a different position from the plurality of ink sub-tanks in the transport direction, and are aligned in the main scanning direction.

13. In an inkjet recording apparatus for textile printing according to any one of claims 1 to 12, An inkjet recording apparatus for textile printing, wherein the plurality of ink head rows number three or more.

14. A conveying unit that conveys a recording medium made of fabric in a predetermined conveying direction, A carriage that moves back and forth in the main scanning direction intersecting the transport direction, An ink head array for image formation is ejected onto a predetermined recording area of ​​the fabric, and one array of ink head arrays mounted on the carriage at a predetermined position in the transport direction, or an odd number of arrays of ink heads mounted on the carriage so as to be aligned in the transport direction, A pre-treatment head is mounted on the carriage at a predetermined position in the transport direction and discharges a non-coloring pre-treatment liquid that lands on the recording area of ​​the fabric before the ink, A post-processing head is mounted on the carriage at a predetermined position in the transport direction and discharges a non-coloring post-processing liquid that lands on the recording area of ​​the fabric after the ink, Equipped with, An inkjet recording method for a textile printing inkjet recording apparatus, wherein each of the one or more inkhead rows includes a plurality of inkheads arranged in the main scanning direction, each ejecting an image-forming ink, If, among the plurality of ink heads, the pre-processing head and the post-processing head, the head located at the furthest end in the main scanning direction is called the one-end head, and the head located at the furthest end is called the other-end head, and the distance from the one-end head to the other-end head in the main scanning direction is LC, the distance from the one-end head to the pre-processing head in the main scanning direction is B1, and the distance from the one-end head to the post-processing head in the main scanning direction is B2, then the pre-processing head and the post-processing head are arranged to satisfy the relationship in Equation 2, and |(B1-B2) / LC| ≤ 1 / 2 ... (Equation 2) While moving the carriage in the first direction in the main scanning direction, Discharge the pre-treatment liquid from the pre-treatment head onto a predetermined recording area of ​​the fabric, The ink is ejected from the ink head to the recording area that has received the ejection of the pre-treatment liquid, The post-processing head ejects the post-processing liquid to the recording area that has received the ejected ink, An inkjet recording method comprising the following features.

15. In the inkjet recording method according to claim 14, An inkjet recording method wherein the plurality of ink head rows consist of three or more rows.