Experimental-based feedforward control for a DoD inkjet printhead

Ezzeldin, Mohamed; Bosch, van den Ppj Paul; Weiland, S.

doi:10.1016/j.conengprac.2013.03.002

Cited by 18 publications

(9 citation statements)

References 10 publications

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“…Yüksek hızda basım yapılırken yaşanabilecek düşük basım kalitesinin üstesinden gelmek üzere Ezzeldin ve ark. DoD ink-jet baskı kafalarına yönelik deney-esaslı bir besleme kontrolünü çalışmışlardır [28].…”

Section: Teknolojinin Avantaj Ve Dezavantajlarıunclassified

Seramik Sektöründe Dijital Boya (İnk–Jet) Uygulamaları

Karasu

Karabulut

Biçer

et al. 2019

El-Cezeri Fen Ve Mühendislik Dergisi

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Seramik karolar sadece teknik özelliklerinden dolayı değil aynı zamanda estetik görünümleri sayesinde tercih edilmektedir. Bu yüzden kaplama malzemelerinde dekorasyon önemli bir süreç aşamasıdır. Mevcut seramik kaplama malzemelerinin üretim sisteminde elek baskı yönteminden, ink-jet dekorasyon teknolojisine geçiş çok yaygın hale gelmiştir. Dijital dekorasyon sisteminin yaygınlaşmasıyla tüketicin ihtiyacını karşılayacak şekilde estetik görünümün eldesi de kolaylaşmıştır. Seramik karolarda bu tekniğin uygulanması birçok avantajı da beraberinde getirmektedir. İlgili sektörde söz konusu uygulamaya geçen pek çok firma mevcuttur. Ayrıca, ink-jet dekorasyon tekniğiyle ilgili araştırma-geliştirme çalışmalarına devam edilmektedir. Bu makalede ink-jet teknolojisinin zaman içindeki gelişimine yer verilmektedir.Anahtar kelimeler: Seramik karo; ink-jet dekorasyon; uygulama; gelişim Ink-Jet Decoration Applications in Ceramic IndustryAbstract: Ceramic tiles are preferred not only for technical properties required but also for aesthetical looks possessed. Therefore, decoration stage during the production is very important. Nowadays in the production of ceramic coating materials moving from silk screening to ink-jet decoration technology became popular. Consequently, aesthetical apperances fulfilling costomers demand become easily obtained, as well as supplying many other facilities. In the regarded sector there have been many factories started to apply ink-jet technology, besides there have been many research and development studies carrying out. Hereby, the development of inkjet technology is mentioned.

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Section: Teknolojinin Avantaj Ve Dezavantajlarıunclassified

Seramik Sektöründe Dijital Boya (İnk–Jet) Uygulamaları

Karasu

Karabulut

Biçer

et al. 2019

El-Cezeri Fen Ve Mühendislik Dergisi

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“…A new input pulse was presented by Khalate et al (2011) and Ezzeldin et al (2013), and it consists of two trapezoidal pulses, namely, a jetting pulse and a quenching pulse. However, in their work, the output of the system was not the fluid pressure, but the “meniscus velocity,” which is equivalent to the velocity of the vibration film in the printhead used in this study.…”

Section: Optimizing the Input With Different Patterns Of Waveform Modificationmentioning

confidence: 99%

“…Kim et al (2012) studied the dynamics characteristics of a piezoelectric inkjet printhead to assess optimization of the driving input. Khalate et al (2011) and Ezzeldin et al (2013) proposed a new pattern of driving input and a quenching pulse to reduce the residual vibration of the meniscus in their inkjet structure.…”

Section: Introductionmentioning

confidence: 99%

Optimization of the driving waveform of a piezoelectric inkjet printhead based on a system dynamics model

Wang

2018

RPJ

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Purpose This paper aims to present an optimization method of the input driving signal of a piezoelectric inkjet printhead to improve droplet consistency and increase jetting frequency. Design/methodology/approach The optimization target is the transient pressure in the nozzle caused by the input driving signal, which directly generates the droplets. After demonstrating the linearity of the driving input and system pressure, an analytic model as a transfer function was developed, allowing calculation of the pressure vibration in the nozzle for an arbitrary input. Different patterns of input signal were parameterized and applied into the optimizing function, which represents the difference between the ideal and the actual pressure vibration. By determining the function minimum, the optimized parameters of the input signal were estimated. Findings Optimization results of different input patterns were compared and verified by the numerical model of the printhead, and it was revealed that the optimization method that combined the quenching pulse and an increased falling time interval was more effective than use of a single method. Originality/value After the process of optimization, a new type of input signal to the piezoelectric inkjet printhead was showed. By this method, the frequency of the printhead could be increased without losing consistency of droplets.

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“…Literature in driving piezoelectric printhead were mostly using single-nozzle printhead to jet inks (Kwon, 2009b;Shin et al, 2011;Kwon et al, 2016;Liu et al, 2013;Kwon, 2010;Wang and Xi, 2018), while few were adopting multi-nozzle printheads (Kwon and Kim, 2007;Khalate et al, 2012;Ezzeldin et al, 2013;Oktavianty et al, 2019). The printing quality is related to jetting behavior, which is affected by the combined effect of the driving waveform and the ink properties (Liu et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Study on driving waveform design process for multi-nozzle piezoelectric printhead in material-jetting 3D printing

Cheng

Tseng

2021

RPJ

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Purpose Material-jetting (MJ) three-dimensional (3D) printing processes are competitive due to their printing resolution and printing speed. Driving waveform design of piezoelectric printhead in MJ would affect droplet formation and performance, but there are very limited studies on it besides patents and know-hows by commercial manufacturers. Therefore, in this research, the waveform design process to efficiently attain suitable parameters for a multi-nozzle piezoelectric printhead was studied. Therefore, this research aims to study the waveform design process to efficiently attain suitable parameters for a multi-nozzle piezoelectric printhead. Design/methodology/approach Ricoh’s Gen4L printhead was adopted. A high-speed camera captured pictures of jetted droplets and droplet velocity was calculated. The waveforms included single-, double- and triple-pulse trapezoidal patterns. The effects of parameters were investigated and the suitable ones were determined based on the avoidance of satellite drops and preference of higher droplet velocity. Findings In a single-pulse waveform, an increase of fill time (Tf) decreased the droplet velocity. The maximum velocity happened at the same pulse width, the sum of fill time and hold time (Tf + Th). In double- and triple-pulse, a voltage difference (Vd) above zero in the holding stage was adopted except the last pulse to avoid satellite drops. Suitable parameters for the selected resin were obtained and the time-saving design process was established. Research limitations/implications Based on the effects of parameters and observed data trends, suggested procedures to determine suitable parameters were proposed with fewer experiments. Practical implications This study has verified the feasibility of suggested design procedures on another resin. The required number of trials was reduced significantly. Originality/value This research investigated the process of driving waveform design for the multi-nozzle piezoelectric printhead. The suggested procedures of finding suitable waveform parameters can reduce experimental trials and will be applicable to other MJ 3D printers when new materials are introduced.

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Experimental-based feedforward control for a DoD inkjet printhead

Cited by 18 publications

References 10 publications

Seramik Sektöründe Dijital Boya (İnk–Jet) Uygulamaları

Seramik Sektöründe Dijital Boya (İnk–Jet) Uygulamaları

Optimization of the driving waveform of a piezoelectric inkjet printhead based on a system dynamics model

Study on driving waveform design process for multi-nozzle piezoelectric printhead in material-jetting 3D printing

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