Patterning defects in high-speed reverse offset printing: lessons from contact dynamics

Kusaka, Yasuyuki; Mizukami, Makoto; Yamaguchi, Tetsuo; Fukuda, Nobuko; Ushijima, Hirobumi

doi:10.1088/1361-6439/ab024b

Cited by 9 publications

(6 citation statements)

References 29 publications

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“…Установлено, что свойства материала, вдавливание и скорость печати существенно влияют на размер и плотность дефектов офсетной печати, что необходимо учитывать при определении фактической площади контакта [4].…”

Section: обзор литературы и постановка проблемunclassified

Determination of the actual deckle contact area and the actual pressure in the printed area

Aliyev,

Khalilov,

Ismailova

2023

MEI

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The article determines the effect of micro-roughening of the surface roughness of the printing plate on the deformation of the deck. To study the effect of printing plate surface roughness on the actual contact area of the deck in the printing area, the interaction of the roughness microroughness with the surface of the softer material of the deck was considered. A review and discussion of the results of studies on contact problems was made. To determine the actual contact area from the applied load, the distribution of micro protrusions of the surface roughness of the printing plate is taken into account. A method has been developed for calculating the actual deckle contact area and the actual pressure in the printing area, taking into account the surface roughness of the printing plate. According to the proposed method, the values of the actual deckle contact area and the actual pressure in the printing zone were calculated. It has been established that with an increase in the normal load, the actual deckle contact area increases. Also, an increase in the normal load leads to an increase in the actual pressure. The set values of the actual contact area and the actual pressure contribute to the formation of an elastic saturated contact of the deckle, which ensures high quality prints. The results obtained by the developed method are compared with calculations based on known dependencies. In calculations, the number of protrusions crossed by the average level and the number of protrusion tops located above the midline in the area corresponding to the base length are determined, respectively, by the average roughness step and by the average step between adjacent roughness protrusions. The research results make it possible to make the right choice of printing plates and decals when adjusting and operating a printing machine, as well as to set the actual pressure value, which ensures high quality prints.

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Section: обзор литературы и постановка проблемunclassified

Determination of the actual deckle contact area and the actual pressure in the printed area

Aliyev,

Khalilov,

Ismailova

2023

MEI

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“…A recent study on the direct observation of PDMS-glass contact by a high-speed camera revealed that the contact is not homogeneously formed but tiny contact spots are simultaneously formed possibly owing to the surface roughness of both surfaces. 95) Then, the tiny spots gradually enlarge, which leads to the trapping of air between the PDMS-glass interface and eventually causes defects in printed patterns. These types of defects can be suppressed by increasing the printing pressure probably because the penetration of trapped air through PDMS is facilitated.…”

Section: Reverse Offset Printing Under High-speed Conditionsmentioning

confidence: 99%

Recent advances in reverse offset printing: an emerging process for high-resolution printed electronics

Kusaka

Fukuda

Ushijima

2020

Jpn. J. Appl. Phys.

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Mechanisms, materials, and processes of high-resolution printing techniques dedicated to printed electronics are reviewed. Advanced printing methods, including reverse offset printing and adhesion contrast planography, use absorption of ink solvents by polydimethylsiloxane (PDMS) to semi-solidify inks before ink-transfer. The patterning principle transforms from wetting to adhesion and fracture; resolution problems encountered during the patterning of liquid inks (e.g. spreading, splitting, coalescence, bulges, and coffee ring shapes) can be avoided, and single-μm features can be achieved. After summarizing the fundamentals of reverse offset printing, details on the patterning mechanism and contact mechanics encountered during the process are shown together with the design concept of the ink formulation. Complementary processes for multilayered electronic devices (e.g. wet-on-wet for high-throughput production, buried electrode formation, taper formation, and vertical interconnections) and the prediction of pattern size integrity are presented.

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“…The dynamics of the liquid are also considerably affected by surface patterns/roughness 5 or by the chemical composition of the liquid. 6 The wetting process has various applications such as printing, 7,8 coating, 9,10 and microfluidics. [11][12][13] Wetting is also observed in soft viscoelastic solids, such as rubbers, [14][15][16] gels, 17 and soft adhesives.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Wetting dynamics of viscoelastic solid films

et al. 2022

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Patterning defects in high-speed reverse offset printing: lessons from contact dynamics

Cited by 9 publications

References 29 publications

Determination of the actual deckle contact area and the actual pressure in the printed area

Determination of the actual deckle contact area and the actual pressure in the printed area

Recent advances in reverse offset printing: an emerging process for high-resolution printed electronics

Wetting dynamics of viscoelastic solid films

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