Study on the Uniform Distributed Mechanics of Ink Droplet in Inkjet Printing Equipment

2011 ◽  
Vol 236-238 ◽  
pp. 1505-1507
Author(s):  
Qi Feng Chen ◽  
Shi Lin Yuan ◽  
Guang Xue Chen ◽  
Bao Lin Tang ◽  
Jing Lei Tai
Keyword(s):  
Theoretical Calculation ◽  
Inkjet Printing ◽  
Testing Equipment ◽  
Cross Direction ◽  
Uniform Velocity ◽  
New Type ◽  
Printing System ◽  
The Cross

This paper studied on the hydrokinetics and uniform distributed mechanics of supplying ink pressure for the inkjet printing system based on the, and the advanced testing equipment. According to the analysis of theoretical calculation and CFD, we designed a new type of equipment for supplying ink, including the structure of the transition pipe. This supplying ink equipment could make the ink droplets distribute under the equal pressure on the cross direction. The experiments showed that this new supplying ink equipment could make the ink droplets distribute under the equal pressure and uniform velocity on the cross direction, so it greatly improved the imaging effects for the inkjet printing system.

A New Design of a Piezoelectric Triaxial Micro-Accelerometer

2015 ◽  
Vol 645-646 ◽  
pp. 841-846 ◽  
Author(s):  
Jian Yan Wang ◽  
Ting Ting Wang ◽  
Hang Guo
Keyword(s):  
Simulation Analysis ◽  
Structural Parameters ◽  
Sol Gel ◽  
Triaxial Accelerometer ◽  
Response Frequency ◽  
Pzt Films ◽  
New Type ◽  
The Cross ◽  
Cross Axis ◽  
Micro Accelerometer

Accelerometer in MEMS always is made by capacitive or piezoresistive, whose dynamic response is not good, the operating frequency is narrow, and the cross-axis sensitivity is low. A new type of piezoelectric micro-accelerometer is designed, and its structure is “x” type. The sensing unit is piezoelectric PZT films, which is achieved by sol-gel method. The accelerometer is a triaxial accelerometer. The theoretical and simulation analysis is used to achieve the charge sensitivity and response frequency, and also get the optimal structural parameters. A new circuit connection is proposed to improve the sensitivity and avoid the cross-axis sensitivity. The design achieves the z-axis sensitivity with more than 40 pC/g, x, y-axis sensitivity with more than 8pC/g, and the response frequency is about 3000Hz.

System Design and Process Optimization for the Inkjet Printing of PEDOT:Poly(styrenesulfonate)

2014 ◽  
Vol 2 (1) ◽  
Author(s):  
P. Wilson ◽  
C. Lekakou ◽  
J. F. Watts
Keyword(s):  
Process Optimization ◽  
Inkjet Printing ◽  
Process Model ◽  
Conductive Polymer ◽  
Process Window ◽  
Rayleigh Instability ◽  
Voltage Waveform ◽  
Electrically Conductive ◽  
Satellite Drops ◽  
Printing System

A laboratory-scale inkjet printing system was designed for printing polymeric inks with the focus on PEDOT:PSS, a transparent, electrically conductive polymer. PEDOT:PSS inks with 0 and 1 wt. % Surfynol were tested rheologically in elongational and shear flows. A process model is presented and validated for the prediction of flow boundary after the ink exits the nozzle, including drop formation. Process optimization involved establishing a process window related to the voltage waveform, substrate temperature, speed and printed line-overlap, aiming at avoiding satellite drops, “coffee cup” rings, the Rayleigh instability, “stacked printed lines,” and discontinuities in the printed lines or films.

The Effect of Radiation Sterilization on the Stress-Strain Properties of Non-Woven Materials -Based on Polypropylene

2020 ◽  
Vol 992 ◽  
pp. 403-408
Author(s):  
Elvina R. Rakhmatullina ◽  
M.S. Lisanevich ◽  
Rezeda Yu. Galimzyanova ◽  
Yu.N. Khakimullin
Keyword(s):  
Ionizing Radiation ◽  
Absorbed Dose ◽  
Breaking Load ◽  
Radiation Sterilization ◽  
Stress Strain ◽  
Cross Direction ◽  
Absorbed Doses ◽  
Single Use ◽  
The Cross ◽  
The Web

Non-woven materials are widely used for the manufacture of disposable medical clothing and underwear. Radiation is widely used to sterilize single-use medical devices. The paper analyzes the effect of ionizing radiation at absorbed doses of 0-60 kGy on the stress-strain properties of medical non-woven spanmelt material based on polypropylene obtained by blow-molding technology. It has been established that ionizing radiation significantly reduces the breaking load and elongation in the machine and cross directions of the web. For this type of material, the most critical is the decrease in strength in the cross direction of the web, primarily because the level of strength in the cross direction of spanmelt materials is generally low. Sterilization by ionizing radiation further reduces strength and leads to the fact that non-woven materials irradiated with an absorbed dose of 50-60 kGy are close to unacceptable values in accordance with the requirements of EN 13975-2011.

A Study on the Battery Parameter Testing Equipment

2011 ◽  
Vol 148-149 ◽  
pp. 67-70
Author(s):  
Feng Xiao ◽  
Liang Han ◽  
Xin Pan Chu ◽  
Jun Feng Xue ◽  
Qi Biao Chen ◽  
...  
Keyword(s):  
High Power ◽  
Formation Process ◽  
Testing Equipment ◽  
Active Materials ◽  
Discharge Performance ◽  
Power Battery ◽  
New Type ◽  
Li Ion ◽  
Charge Discharge

Li-ion power battery which has a broad prospect of application in many industry fields is a new type of high power battery. The formation is a key process in battery manufacture. After formation, the active materials of anode and cathode in the battery can be activated. Consequently, the charge-discharge performance, self-discharge performance, reserve performance and some other comprehensive performances can be improved. Only after formation can batteries achieve the best performance. With the change of formation process, the formation and holding for a single battery has been changed to for a group. Therefor, a new type of battery parameter testing equipment needs to be designed, which can test a group of batteries automatically. This paper will introduce the design of this equipment thoroughly.

Research of Nanometer Positioning Stage With Six Degree of Freedom Based on Binary Actuation Principle

2007 ◽  
Author(s):  
Shufeng Sun
Keyword(s):  
Feedback Control ◽  
Theoretical Calculation ◽  
Degree Of Freedom ◽  
Element Analysis ◽  
Positioning Stage ◽  
In Series ◽  
Ultra Precision ◽  
New Type ◽  
Six Degree Of Freedom ◽  
Development Tendency

To adapt the miniaturized development tendency of nanometer positioning devices, a new type of micro-displacement stage with six degree of freedom, which can implement nanometer-level ultra-precision positioning without feedback control is designed. It takes a group of piezoelectric ceramics actuators (PZTAs) connected in series as actuation unit, takes flexure hinges as elastic guide rail. To overcome the non-linearity and hysteresis of PZTAs, binary actuation principle is adopted to control a group of actuators that work together to output many discrete, repeatable displacements. If these displacements are distributed within a scope of several microns, only simple on and off actuator commands may obtain nanometer-level repeatable positioning without feedback control. Theoretical calculation and finite element analysis (FEA) are used to design and simulate the stage. Expressions of rigidity and stress are obtained by theoretical calculation. FEA and experimental results verify the rationality and feasibility of the stage.

Spiral involutes and their application in gear transmission

2011 ◽  
Vol 225 (12) ◽  
pp. 2981-2990 ◽  
Author(s):  
L Liu ◽  
Y H Huang
Keyword(s):  
Gear Transmission ◽  
Transmission Ratio ◽  
Tooth Surface ◽  
Helical Gears ◽  
Gear Drive ◽  
Uniform Velocity ◽  
Solid Models ◽  
Involute Gears ◽  
New Type ◽  
Cylindrical Spiral

Involute helical gears mesh based on the intersections of involute helicoids. However, spiral involutes on the tooth surface do not participate in meshing directly. A new type of gear drive, the spiral involute gear drive, is proposed that works on the contact of spiral involutes. The generation of tooth profile is introduced in detail. Through relative-stagnation method, spiral involutes prove to have conjugation characteristics. To testify whether the transmission ratio of cylindrical spiral involute gears is constant, simulation is implemented in commercial codes ADAMS based on solid models of a pair of spiral involute gears. The computed results show that this novel gear drive can achieve a constant transmission ratio. Due to transmission with uniform velocity, cylindrical spiral involute gears can be used in transmission between intersecting axes. Milling and grinding apply to manufacturing of spiral involute gears.

Survey and Analyze the Line Output Characteristics in Inkjet Printing

2012 ◽  
Vol 217-219 ◽  
pp. 2603-2606
Author(s):  
Xiao Meng Cui ◽  
Guang Xue Chen ◽  
Huan Mei Wang
Keyword(s):  
Line Width ◽  
Inkjet Printing ◽  
Output Characteristic ◽  
Quality Detection ◽  
Study Results ◽  
Printing System ◽  
Output Characteristics ◽  
Standard Output ◽  
Positive Line

Inkjet characters and graphics quality are impacted by rough and wavy exterior appearing along the line edge caused by feather and penetration phenomena. In order to deliberate whether only positive line attributes measurement was adequate to detect the output characteristic of an inkjet printing system, negative line quality survey was involved in. The attributes such as line width, contrast and blurriness etc. of negative lines in vertical and horizon direction together with positive lines were measured and analyzed though comparison according to ISO 13660 standard. Output characteristics of all kinds of lines were further summarized and detected in terms of attribute correlations of positive lines presented in existing study. Results show that when negative and positive lines are considered altogether the correlations among lines in different direction turn complex, which are distinguished with the simple correlativity in positive line quality detection.

Biodegradable Nano-Material Composites for Use in an Inkjet Printing System

2006 ◽  
Vol 921 ◽  
Author(s):  
Nicole H Levi ◽  
John B. McGuirt ◽  
Faith M. Coldren ◽  
David L. Carroll
Keyword(s):  
Inkjet Printing ◽  
Collagen Type ◽  
Three Dimensional ◽  
Collagen Type I ◽  
Type I ◽  
Printing System ◽  
Walled Carbon Nanotubes ◽  
Thermal Inkjet Printing ◽  
Compatibility Of Materials ◽  
Insight Into

AbstractBiomaterials for development of resorbable, three-dimensional tissue scaffolds have been used in a modified thermal inkjet printing system to explore compatibility of materials, solvents and the printing system. The polymers included collagen (type I), sodium alginate, fibronectin, poly-lactic co-glycolic acid (PLGA), polyethylene glycol (PEG), and tetraglycol were tested. Single-walled carbon nanotubes were combined with the biopolymers to determine which systems in which they would blend well, and be able to print. Uncovering which biopolymers may be printed together offers insight into development of materials which most closely match the properties of biological tissue.

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