TWI584968B - Printing method for uv inkjet printer capable of eliminating printing defects - Google Patents
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- 238000007639 printing Methods 0.000 title claims description 97
- 238000000034 method Methods 0.000 title claims description 24
- 230000007547 defect Effects 0.000 title claims description 16
- 239000000463 material Substances 0.000 claims description 30
- 238000003848 UV Light-Curing Methods 0.000 claims description 6
- 230000000873 masking effect Effects 0.000 claims description 3
- 239000000976 ink Substances 0.000 description 78
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000004049 embossing Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
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Description
本發明係有關一種可消除列印缺陷之UV噴墨印表機列印方法，尤指一種藉由對專色油墨墨水匣的列印資料進行遮罩處理，以在視覺上消除噴墨模組進行疊印時所產生的可見列印缺陷者。 The invention relates to a UV inkjet printer printing method capable of eliminating printing defects, in particular to visually eliminating an inkjet module by masking printing data of a spot ink ink cartridge. Visible print defects that occur when overprinting.
由於UV油墨具有疊印可堆疊厚度的特性，因此常被使用在在類似3D列印的特殊應用上，例如浮雕或盲人點字。為使列印成品表現出豐富的色階變化，UV噴墨印表機在利用分色軟體進行分色處理時，係根據待列印影像的圖檔大小與解析度進行多重列印行程(multi-pass)，使噴墨頭分次將待列印資料予以列印而在列印物上重複地噴墨疊色，藉以在同一噴墨位置累積各次列印行程所列印的墨點而呈現多階列印的效果。關於多重列印行程的列印技術，可參考美國專利第5,469,198號及第5,923,349號中提供的列印方法與裝置。 Because UV inks have the characteristics of overprintable stack thickness, they are often used in special applications like 3D printing, such as embossing or blind braille. In order to make the printed product show a rich color gradation change, the UV inkjet printer performs multiple printing strokes according to the image size and resolution of the image to be printed when performing color separation processing using the color separation software (multi -pass), so that the inkjet head successively prints the material to be printed and repeatedly inkjets the ink on the printed matter, thereby accumulating the ink dots printed in each printing stroke at the same inkjet position. Renders the effect of multi-level printing. The printing method and apparatus provided in U.S. Patent Nos. 5,469,198 and 5,923,349 are incorporated herein by reference.
然而，由於噴墨頭容易在墨水用罄或長期使用的情況下造成其噴嘴堵塞受損，因而於疊印後在列印物上相對應受損噴嘴的像素位置處形成橫紋(banding)的現象(例如造成圖形的每一行皆產生一細線)，或是於該位置處將噴墨模組進給控制所產生的誤差放大，造成異常列印橫紋而影像列印品質，並造成成本資源的浪費。由於目前市面上UV 3D或浮雕列印(如DCS)的列印技術皆無法避免疊印時所產生的上述列印缺陷，在列印技術上仍有改善之空間。 However, since the ink jet head is liable to cause damage to the nozzle clogging in the case where the ink is used for a long time or long-term use, a banding phenomenon at a pixel position corresponding to the damaged nozzle on the print after the overprinting is formed. (For example, each line of the graphic produces a thin line), or the error generated by the inkjet module feeding control is amplified at the position, causing abnormal printing of the horizontal stripes and the image printing quality, and causing cost resources. waste. Since the current printing technology of UV 3D or embossed printing (such as DCS) on the market cannot avoid the above-mentioned printing defects caused by overprinting, there is still room for improvement in printing technology.
因此，如何能夠有效的改善UV噴墨印表機在進行疊印時所產生的上述列印缺陷，以進一步的提高UV噴墨印表機的列印品質，為本領域中技術人員與使用者所殷殷企盼。 Therefore, how to effectively improve the above-mentioned printing defects generated by the UV inkjet printer during overprinting, to further improve the printing quality of the UV inkjet printer, is a person skilled in the art and a user. I am looking forward to it.
本發明之主要目的在提供一種可消除列印缺陷之UV噴墨印表機列印方法，藉由對待列印行程的列印資料中之專色油墨墨水匣的列印資料進行遮罩處理，俾能在視覺上有效消除UV噴墨印表機於疊印時所產生的缺陷。 The main object of the present invention is to provide a UV inkjet printer printing method capable of eliminating printing defects, by masking the printing material of the spot ink ink cartridge in the printing data of the printing stroke.俾 can effectively eliminate the defects caused by UV inkjet printers during overprinting.
本發明之另一目的在提供一種可消除列印缺陷之UV噴墨印表機列印方法，藉由對待列印行程的列印資料中之專色油墨墨水匣的向左及向右列印資料進行相同或不同的遮罩處理，俾能在疊印處產生特殊浮水印立體效果，以增加列印質感及特殊應用層面。 Another object of the present invention is to provide a UV inkjet printer printing method capable of eliminating printing defects by printing the left and right of the spot ink ink cartridge in the printing data of the printing stroke. The data is processed by the same or different masks, and the special watermark stereo effect can be generated at the overprint to increase the print texture and special application level.
為達上述之目的，本發明所設之可消除列印缺陷之UV噴墨印表機列印方法包括將一待列印資料的每一列印區分解為複數個待列印行程的列印資料，其中每一待列印行程的列印資料包括有複數個像素點資料，接著使用一第一遮罩資料對該等待列印行程的列印資料中之專色油墨墨水匣之每一向左列印資料進行一第一遮罩處理，並使用一第二遮罩資料對該等待列印行程的列印資料中之專色油墨墨水匣之每一向右列印資料進行一第二遮罩處理，藉以使該噴墨模組之專色油墨墨水匣分別依據已完成第一及第二遮罩處理後之向左及向右列印資料進行列印，直至該待列印資料列印完成。 For the above purposes, the UV inkjet printer printing method of the present invention for eliminating printing defects includes decomposing each printing area of a material to be printed into a plurality of printing materials to be printed. The print data of each of the to-be-printed strokes includes a plurality of pixel points, and then a first mask data is used to print the left-hand column of the spot ink ink in the print data waiting for the print stroke. Printing the data to perform a first mask processing, and using a second mask data to perform a second mask processing on each of the right-to-right printed materials of the spot color ink ink in the printing data waiting for the printing stroke. The inkjet ink cartridges of the inkjet module are printed according to the left and right prints after the first and second mask processes are completed, respectively, until the printing of the data to be printed is completed.
實施時，該第一遮罩資料係以亂數方式刪除所述專色油墨墨水匣之向左列印資料中的像素點資料而產生。 In implementation, the first mask data is generated by deleting the pixel data in the left-side printing material of the spot color ink ink in a random manner.
實施時，該第二遮罩資料係以亂數方式刪除所述專色油墨墨水匣之向右列印資料中的像素點資料而產生。 In implementation, the second mask data is generated by deleting the pixel data in the right-printing material of the spot ink ink in a random manner.
實施時，該第一遮罩資料係為一預設圖形資料，供與所述專色油墨墨水匣之向左列印資料進行一交集運算。 In implementation, the first mask data is a preset graphic data for performing an intersection operation with the left-side printing material of the spot color ink ink.
實施時，該第二遮罩資料係為一預設圖形資料，供與所述專色油墨墨水匣之向右列印資料進行一交集運算。 In implementation, the second mask data is a preset graphic data for performing an intersection operation with the right-printing material of the spot ink ink cartridge.
實施時，該第一遮罩資料與該第二遮罩資料係可為相同或 不同的遮罩資料。 In implementation, the first mask data and the second mask data may be the same or Different mask data.
實施時，該專色油墨墨水匣中之專色油墨係為UV光固化透明油墨或UV光固化白色油墨。 When implemented, the spot color ink in the spot ink ink cartridge is a UV light curing transparent ink or a UV light curing white ink.
為進一步了解本發明，以下舉較佳之實施例，配合圖式、圖號，將本發明之具體構成內容及其所達成的功效詳細說明如下。 In order to further understand the present invention, the specific embodiments of the present invention and the effects achieved thereby are described in detail below with reference to the drawings and drawings.
第1A圖為依據本發明之一實施例之第一遮罩資料之實施方式示意圖。 1A is a schematic diagram of an embodiment of a first mask data in accordance with an embodiment of the present invention.
第1B圖為第1A圖之實施例中已完成第一遮罩處理後之欲列印向左列印資料之示意圖。 FIG. 1B is a schematic diagram of the printing of the left-printed material after the first mask processing has been completed in the embodiment of FIG. 1A.
第2A圖為第1A圖之實施例中之第二遮罩資料之實施方式示意圖。 Fig. 2A is a schematic view showing the implementation of the second mask data in the embodiment of Fig. 1A.
第2B圖為第1A圖之實施例中已完成第二遮罩處理後之欲列印向右列印資料之示意圖。 FIG. 2B is a schematic diagram of the printing of the data to be printed right after the second mask processing has been completed in the embodiment of FIG. 1A.
第3圖為第1A圖之實施例中之列印結果完成示意圖。 Figure 3 is a schematic diagram showing the completion of the printing result in the embodiment of Figure 1A.
請參閱第1A-3圖，其為本發明可消除列印缺陷之UV噴墨印表機列印方法之一實施例，其中該UV噴墨印表機係包括一噴墨模組以及設於上述噴墨模組左右側面之UV光投射裝置，該噴墨模組係可以垂直該列印軌道的方式，在列印軌道上之列印材上方沿著一滑軌左右來回移動，以執行圖樣的待列印資料列印工作；此外，該噴墨模組具有複數個彩色墨水匣及一專色油墨(spot color)墨水匣，該專色油墨墨水匣中充填有UV光固化透明油墨，所述墨水經噴墨模組的噴嘴噴至一列印物上後，係可藉UV光投射裝置發出UV光而進行固化。所述列印方法包括下列步驟：1.將一待列印資料分解為複數個待列印行程(printing pass)的列印資料，其中每一待列印行程的列印資料包括有複數個像素點資料；2.使用一第一遮罩資料對該等待列印行程的列印資料中之專色油墨墨水匣之每一向左列印資料進行一第一遮罩處理； 3.使用一第二遮罩資料對該等待列印行程的列印資料中之專色油墨墨水匣之每一向右列印資料進行一第二遮罩處理；4.使該噴墨模組之專色油墨墨水匣分別依據已完成第一及第二遮罩處理後之向左及向右列印資料進行列印，直至該待列印資料列印完成。 Please refer to FIG. 1A-3, which is an embodiment of a UV inkjet printer printing method capable of eliminating printing defects, wherein the UV inkjet printer comprises an inkjet module and is disposed on a UV light projection device on the left and right sides of the inkjet module, wherein the inkjet module can vertically move up and down along a slide rail on the printing material on the printing track in a manner perpendicular to the printing track to perform the pattern The inkjet module has a plurality of color ink cartridges and a spot color ink cartridge, and the spot ink ink cartridge is filled with a UV light curing transparent ink. After the ink is sprayed onto a column of ink through the nozzle of the inkjet module, it can be cured by UV light emitted by the UV light projection device. The printing method comprises the following steps: 1. Decomposing a data to be printed into a plurality of printing materials to be printed, wherein the printing data of each printing stroke includes a plurality of pixels. Point data; 2. using a first mask data to perform a first mask processing on each of the left-side printing materials of the spot color ink ink in the printing data waiting for the printing stroke; 3. using a second mask data to perform a second mask processing on each of the right-to-right print data of the spot ink ink cartridge in the print data waiting for the print stroke; 4. making the inkjet module The spot color ink cartridges are printed according to the left and right print data after the first and second mask processes have been completed, respectively, until the print data to be printed is completed.
其中，該UV噴墨印表機係利用分色軟體對一待列印影像進行分色處理，並依據待列印影像的圖檔大小與解析度將一待列印資料中的每一列印區分解為複數個待列印行程的列印資料，每一待列印行程的列印資料包括有複數個像素點資料，藉以使相鄰的列印資料分散在不同的待列印行程中依序進行列印。本實施例係以四次待列印行程(4-pass)為例，將列印資料分四次列印，即以噴墨模組由右向左移動的列印工作做為第一、三個待列印行程，並以噴墨模組由左向右移動的列印工作做為第二、四個待列印行程。 Wherein, the UV inkjet printer uses a color separation software to perform color separation processing on a to-be-printed image, and each printing area in a to-be-printed material is determined according to the image size and resolution of the image to be printed. Decomposed into a plurality of print data to be printed, each print data to be printed includes a plurality of pixel data, so that adjacent print data is dispersed in different print strokes. Print it. In this embodiment, four printing passes (4-pass) are taken as an example, and the printing data is printed in four times, that is, the printing work by moving the inkjet module from right to left as the first and third. The printing process is to be printed, and the printing work of moving the inkjet module from left to right is taken as the second and fourth printing strokes to be printed.
於決定待列印行程的次數後，即使用一第一遮罩資料對第一個待列印行程的列印資料中之專色油墨墨水匣之向左列印資料進行一第一遮罩處理。其中該第一遮罩資料係以亂數方式任意刪除所述專色油墨墨水匣之向左列印資料中的像素點資料而產生(如第1A圖所示)，因而在進行第一遮罩處理時，將專色油墨墨水匣第一個待列印行程的列印資料與第一遮罩資料做交集比對，使得在彩色墨水匣及專色油墨墨水匣進行第一個待列印行程時，專色油墨墨水匣不會在遮罩相對應的像素點資料位置噴出透明油墨，其列印結果如第1B圖所示。 After determining the number of times to be printed, a first mask data is used to perform a first mask processing on the left-side printing material of the spot ink ink in the first printing record to be printed. . The first mask data is generated by randomly deleting the pixel data in the left-side printing material of the spot color ink ink in a random manner (as shown in FIG. 1A), and thus the first mask is performed. During processing, the print data of the first ink to be printed in the spot ink ink is compared with the first mask data, so that the first ink to be printed is performed in the color ink cartridge and the spot ink ink cartridge. When the spot color ink ink 匣 does not eject the transparent ink at the corresponding pixel point data position of the mask, the printing result is as shown in FIG. 1B.
於完成第一個待列印行程後，即使用一第二遮罩資料對第二個待列印行程的列印資料中之專色油墨墨水匣之向右列印資料進行一第二遮罩處理。其中該第二遮罩資料係以亂數方式任意刪除所述專色油墨墨水匣之向右列印資料中的像素點資料而產生(如第2A圖所示)，因而在進行第二遮罩處理時，將專色油墨墨水匣第二個待列印行程的列印資料與第二遮罩資料做交集比對，使得在彩色墨水匣及專色油墨墨水匣進行第二個待列印行程時，專色油墨墨水匣不會在遮罩相對應的像素點資料位置噴出透明油墨，其列印結果如第2B圖所示。接著以此類推第三個及第四個待列 同的遮罩資料，且於該待列印資料的所有列印區列印完成時，在第一及第二遮罩處理下所列印出的透明油墨會在列印物上交疊形成一特殊紋路，且該特殊紋路可讓觀察者在視覺上不會看到噴墨模組於進行疊印時所產生的可見列印缺陷(例如，橫紋)，進而感受到該可見列印缺陷已消除。 After completing the first to-be-printed stroke, a second mask is used to perform a second mask on the right-printing material of the spot ink ink in the printed data of the second to-be-printed stroke. deal with. The second mask data is generated by randomly deleting the pixel data in the right-printing material of the spot color ink ink in a random manner (as shown in FIG. 2A), and thus performing the second mask During processing, the printing ink of the spot color ink ink and the second print path are compared with the second mask data, so that the second ink to be printed is performed in the color ink cartridge and the spot ink ink cartridge. When the spot ink ink cartridge does not eject the clear ink at the corresponding pixel data position of the mask, the printing result is as shown in FIG. 2B. Then the third and fourth to be listed The same mask data, and when all the printing areas of the to-be-printed material are printed, the transparent ink printed under the first and second mask processing will overlap on the printed matter to form a Special texture, and the special texture allows the observer to visually not see the visible printing defects (for example, horizontal stripes) generated by the inkjet module during overprinting, and thus the visible printing defect is eliminated. .
在其他實施例中，上述第一遮罩資料與第二遮罩資料係可為相同的遮罩資料，藉以在列印物上的油墨疊印處產生特定的浮水印立體效果(例如布紋或浮水印浮雕)，不僅可在視覺上消除噴墨模組所產生的可見列印缺陷，更可增加列印物的列印質感。 In other embodiments, the first mask data and the second mask data may be the same mask material, thereby generating a specific watermark stereo effect (eg, cloth or float) at the ink overprint on the print. Watermark embossing) not only visually eliminates the visible printing defects produced by the inkjet module, but also increases the print quality of the printed matter.
在其他實施例中，該第一、第二遮罩資料係可為一預設圖形資料(例如，使用者自行定義的一特定設計圖形)，且該第一、第二遮罩資料係可為相同或不同的遮罩資料，供與所述專色油墨墨水匣之向左、向右列印資料分別進行一交集運算，進而在列印物上產生特殊紋路，以在視覺上消除噴墨模組所產生的可見列印缺陷。 In other embodiments, the first and second mask data may be a preset graphic data (for example, a specific design graphic defined by a user), and the first and second mask data may be The same or different mask data for performing an intersection operation on the left and right print data of the spot ink ink, respectively, thereby generating a special texture on the print to visually eliminate the inkjet mold Visible print defects produced by the group.
在其他實施例中，所述專色油墨墨水匣中所充填之專色油墨係可為UV光固化白色油墨，或CMYK(青色、品紅色、黃色、黑色)四色中之一色，或其他特殊顏色(例如螢光色或金屬光澤色)，視分色軟體所指定的專色油墨類型而定。 In other embodiments, the spot color ink filled in the spot ink ink cartridge may be a UV light curing white ink, or one of CMYK (cyan, magenta, yellow, black), or other special colors. The color (such as fluorescent or metallic) depends on the type of spot ink specified by the color separation software.
綜上所述，依上文所揭示之內容，本發明確可達到發明之預期目的，提供一種能在視覺上消除噴墨模組疊印時所產生的可見缺陷，並可提升UV噴墨印表機的應用層面以及列印物的列印質感之UV噴墨印表機列印方法，極具產業上利用之價值，爰依法提出發明專利申請。 In summary, according to the above disclosure, the present invention can achieve the intended purpose of the invention, providing a visible defect that can be visually eliminated when the inkjet module is overprinted, and can enhance the UV inkjet printer. The application level of the machine and the printing method of the UV inkjet printer of the printed matter of the printed matter are extremely valuable for industrial use, and the invention patent application is filed according to law.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6454389B1 (en) * | 2000-09-11 | 2002-09-24 | Eastman Kodak Company | Multipass inkjet printing using print masking |
| CN102602143A (en) * | 2011-01-24 | 2012-07-25 | 精工爱普生株式会社 | Printing apparatus and printing method |
| TW201238775A (en) * | 2011-03-31 | 2012-10-01 | Jetbest Corp | Platform type ink-jet equipment |
-
2015
- 2015-10-21 TW TW104134571A patent/TWI584968B/en not_active IP Right Cessation
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6454389B1 (en) * | 2000-09-11 | 2002-09-24 | Eastman Kodak Company | Multipass inkjet printing using print masking |
| CN102602143A (en) * | 2011-01-24 | 2012-07-25 | 精工爱普生株式会社 | Printing apparatus and printing method |
| TW201238775A (en) * | 2011-03-31 | 2012-10-01 | Jetbest Corp | Platform type ink-jet equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201714759A (en) | 2017-05-01 |
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