Comprehensive examination of a new mechanism to produce small droplets in drop-on-demand inkjet technology

Poozesh, Sadegh; Saito, Kozo; Akafuah, Nelson K.; Graña-Otero, José

doi:10.1007/s00339-016-9630-9

Cited by 16 publications

(12 citation statements)

References 23 publications

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“…For each substrate and in order to optimize the printing process, drop spacings from 15 µm to 35 µm were tested. As expected, too close drops cause the formation of bulges along the length of the line while large DSs result in scalloped patterns [16,17] as it will be detailed in the next section.…”

Section: Printing Conditionsmentioning

confidence: 53%

Inkjet Printing of a 20 GHZ Coplanar Waveguide Monopole Antenna Using Copper Oxide Nanoparticles on Flexible Substrates: Effect of Drop Spacing on Antenna Performance

Mohassieb¹,

Kirah²,

Dörsam³

et al. 2017

PIER C

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Abstract-Coplanar monopole antennas printed using copper oxide nanoparticles on flexible substrates are characterized in order to study the effect of the ink drop spacing on the antenna parameters. Polyethylene Terephthalate and Epson paper were the chosen flexible substrates, and the antennas were designed to operate at 20 GHz. A maximum conductivity of 2.8 × 10 7 Ω −1 m −1 was obtained for the films printed on Polyethylene Terephthalate using a drop spacing of 20 µm. The corresponding antenna achieved a gain and an efficiency of 1.82 dB and 97.6%, respectively. Experiments showed that smaller drop spacings lead to bulging of the printed lines while the antenna performance worsens for longer ones. At the same drop spacing, antennas printed on Epson paper substrate showed a −10 dB return loss bandwidth which extended from 17.9 GHz to 23.3 GHz, leading to a fractional bandwidth of 26.0%.

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Section: Printing Conditionsmentioning

confidence: 53%

Inkjet Printing of a 20 GHZ Coplanar Waveguide Monopole Antenna Using Copper Oxide Nanoparticles on Flexible Substrates: Effect of Drop Spacing on Antenna Performance

Mohassieb¹,

Kirah²,

Dörsam³

et al. 2017

PIER C

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“…For the analysis of tolerance of the parts composing the subsystems, it is assumed that low mechanical adjustment follows the norms set forth by ISO 286: 1988 According to tests by Mercier, et al, which use a print head with 760 nozzles, there is a pronounced decrease in print quality when the erroneous recording exceeds 50 microns [7,22]. The error in the register is given both in longitudinal and transverse displacement as well as in alignment or parallelism between the print head and the container [13]. To find the relative positioning error between each print head and the container (register), the cumulative error of the different mechanisms that compose each topology is evaluated.…”

Section: Methodsmentioning

confidence: 99%

“…A print head within 96 and 384 nozzles per inch has a range in distance between nozzles of 38 and 250 microns. The distance between nozzles are the maximum error permitted in the mechanisms during any movement to avoid figure degradation and becomes the level of mechanical precision needed in the design [13]. During the machines' period of operation, the relative starting position of each container is called the index [14].…”

Section: Introductionmentioning

confidence: 99%

“…The first machines to print on non-flat surfaces preserved the topology of flat machines. The result is effective if the travel distance of the drops are short, otherwise, problems may occur when wide 2D flat print heads on 3D surfaces present distortions due to the differential area [13,15]. In Figure 1, it can be seen how the impression of points spaced at equal distances, ∆X does not have an equivalence on the cylinder surface where this distance becomes a variable ∆S, deforming the original.…”

Section: Introductionmentioning

confidence: 99%

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Design to Achieve Accuracy in Ink-Jet Cylindrical Printing Machines

Arango

Cifuentes

2019

Machines

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Machines for direct digital inkjet printing on cylindrical containers are a new technology out on the market. The commercialization in the industrial sector has been affected by their high precision. This led to the use of mechanisms with narrow manufacturing tolerances and to the searches for topologies that have the least accumulated error without affecting quality. Machines with topologies that work on flat substrates have printing and productivity problems working on cylindrical substrates. This research paper presents the qualitative design of direct digital inkjet printers working over cylindrical substrates comparing five mechanical topologies; three topologies with radial distribution and two topologies with parallel distribution. The aim of these topologies is to find the precision, quality and efficiency of the printer taking into account the restrictions present in its construction. Each topology has separate constitutive mechanisms, the tolerance ranges between the movements of the print head and the substrate in order to determine precision are analyzed. Out of the five topologies described and analyzed in the phase diagram in section 3, three of them meet the requirements. One of the three topologies that meet the requirements is not being developed due to current technological limitations.

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“…Which simplifies the structure in addition and favoring low error that may arise in the different configurations of the printers. A printhead which is between 96 and 384 nozzles per inch has a range between 38 and 250 microns and this is the maximum separation of the print between printheads which presses the manufacturing of the machine to the level of high mechanical precision [13]. During the machines period of operation, the relative starting position of each container is called the index [14].…”

Section: Introductionmentioning

confidence: 99%

Design to Achieve Accuracy in Ink-Jet Cylindrical Printing Machines

Arango¹,

Cifuentes²

2018

Preprint

View full text Add to dashboard Cite

Machines for direct digital inkjet printing on cylindrical containers are a new technology out on the market. Their commercialization in the industrial sector has been affected by their high precision. This leads to the use of mechanisms with narrow manufacturing tolerances and to the search for topologies that have the least accumulated error without affecting quality. Machines with topologies to work on flat substrates have printing and productivity problems working on cylindrical substrates. This research paper presents the qualitative design of a direct digital inkjet printer working over cylindrical substrates comparing five mechanical topologies; three topologies with radial distribution and two topologies with parallel distribution. The aim of these topologies is to find the precision, quality and efficiency of the printer taking into account the restrictions present in its construction. Each topology has separate constitutive mechanisms, it is analyzed the tolerance ranges between the print head and the substrate whose cumulative error maximizes the inkjet print resolution to determine precision. From five Topologies, number 1, 2 and 5 meet the requirements. the topology 2 meets the requirements but it is not able to be developed due to current technological limitations.

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Comprehensive examination of a new mechanism to produce small droplets in drop-on-demand inkjet technology

Cited by 16 publications

References 23 publications

Inkjet Printing of a 20 GHZ Coplanar Waveguide Monopole Antenna Using Copper Oxide Nanoparticles on Flexible Substrates: Effect of Drop Spacing on Antenna Performance

Inkjet Printing of a 20 GHZ Coplanar Waveguide Monopole Antenna Using Copper Oxide Nanoparticles on Flexible Substrates: Effect of Drop Spacing on Antenna Performance

Design to Achieve Accuracy in Ink-Jet Cylindrical Printing Machines

Design to Achieve Accuracy in Ink-Jet Cylindrical Printing Machines

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