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Systems and methods for printing on substrate

A printing system and substrate technology, applied in the field of one or more ink systems, can solve problems such as reduction of ink coverage

Inactive Publication Date: 2015-05-06
FUNAI ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Of course, as print speeds increase to well above 20ppm, there needs to be a design approach to the drying time dynamics, as ink coverage cannot be scaled down continuously
Furthermore, while ink formulation changes can be employed to address dry time issues, it is unlikely to be possible to formulate faster penetrating inks without increased feathering and reduced optical density

Method used

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  • Systems and methods for printing on substrate
  • Systems and methods for printing on substrate
  • Systems and methods for printing on substrate

Examples

Experimental program
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example 1

[0053] Provides a Ka value of 0.15mL / m 2 / ms 0.5 ink-medium pairs. This Ka value is typically used to produce ink-media pairs of very good print quality. According to Table 1, a Ka value of 0.15 can only support a printing system with a 12ppm throughput when the solid area fill contains the desired 20pL / 600dpi. If a printing system of 20ppm is required, image 3 The plot of the figure shows that the ink coverage needs to be reduced to 15pL / 600dpi to achieve a functional dry time of 3 seconds. In other words, for this ink-media pair to work in a smudge-free manner at 20 ppm or higher, the ink coverage needs to be reduced by at least -25%%. However, if you do not reduce the ink coverage (which will worsen the optical density and contrast), but by jetting onto warm paper, you will make the absorption coefficient worse. In this example, the printing system's requirements include a throughput of 60ppm, a k-value of 0.15, and a solid fill coverage of 20pL / 600dpi. Table 1 shows...

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Abstract

A printing system including a printing device operable for applying one or more inks onto a substrate, and a heating device operable for heating the substrate prior to application of the one or more inks onto the substrate.

Description

technical field [0001] The present invention relates to systems and methods for printing one or more inks applied to a substrate. Background technique [0002] Conventional inkjet printing systems are currently capable of delivering 20 pages per minute (20ppm) throughput. Unfortunately, one of the problems that went undiscovered during the testing phase of these systems was smear and offset caused by incomplete drying. At 20ppm, there simply isn't enough time for the printed page to dry before the next page comes out. To solve this problem, a new color table was created to limit the solid-fill ink coverage to 80% per unit area. [0003] Although the smearing problem is significantly improved, reducing ink coverage has the negative impact of reducing optical density and contrast. By reducing the ink coverage, the resulting image is significantly lighter than that produced with a 100% coverage color table. [0004] The previous system, which was limited to 12ppm, did not e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J11/00
CPCB41J11/00244B41J13/0027B41M5/0011G03G2215/00679
Inventor 罗伯特·W·可奈尔查德·扬詹希·博内维兹
Owner FUNAI ELECTRIC CO LTD