Selective Surface Coating and/or Treatment of Printing Pins
- 技術優勢
- Eliminates need for pre-printing, reduces print time and improves printing throughput Avoids solution waste by minimizing excess liquid pickup Allows consistent solution deposit size and volume for improved printing results and higher density of printed spots Applies to most existing commercially available printing pins and equipment, allowing for easy and economical adoption Relaxes the need for strict printing control by reducing sensitivity to adverse environments, conditions, gradual deviations, and accidental deviations
- 技術應用
- Improved printing devices (contact printing, non-contact printing, injection printing, droplet printing, bubble printing, and microarray printing)
- 詳細技術說明
- Printing pins are improved by selective coating and/or treatment, distinctively differentiating the interior and the exterior of liquid channel and thus preventing the rogue liquid on the exterior surface. Greater consistency in printed spot size and volume reduces sensitivity to the printing environment and conditions, reducing the need for strict user scrutiny over the spot printing process. The improvement further eliminates the need for pre-printing and avoids droplet waste. Thus, printing throughput is improved, increasing printing efficiency and saving time. Because the improvement can be applied to most types of printing pins, economic savings can be realized without retrofitting, upgrading or retooling. The improvement likewise can be applied to custom made printing pins. A variety of surface coating and/or treatment options are available for achieving improvements while preserving chemical resistance, durability, and low interaction to biological molecules.
- *Abstract
-
UCLA researchers in the Mechanical and Aerospace Engineering Department and the Biomedical Engineering Inter-Departmental Program have developed a novel method and apparatus for improved droplet printing through a simple treatment of existing pins, eliminating wasteful pre-printing and improving control over and consistency of printed droplet spot size and volume.
- *IP Issue Date
- Apr 24, 2012
- *Principal Investigation
-
Name: Chang-Jin Kim
Department:
Name: Jane Tsai
Department:
- 附加資料
- Patent Number: US8162555B2
Application Number: US2006458981A
Inventor: Kim, Chang-Jin | Tsai, Jane G.
Priority Date: 21 Jul 2005
Priority Number: US8162555B2
Application Date: 20 Jul 2006
Publication Date: 24 Apr 2012
IPC Current: B43K000502
US Class: 401222
Assignee Applicant: The Regents of the University of California
Title: Printing pins having selective wettability and method of making same
Usefulness: Printing pins having selective wettability and method of making same
Summary: For transferring microscopic sized liquid droplets such as proteins, DNA and RNA onto printing surface.
Novelty: Printing pin comprises an elongated structure with exterior and interior surfaces that are hydrophobic and hydrophilic or vice versa
- 主要類別
- 生物醫學
- 細分類別
- 醫學影像
- 申請號碼
- 8162555
- 其他
-
State of Development
All major aspects of the invention have been constructed, experimentally tested, and verified.
Background
Typical printing pins are susceptible to variations in pin surface, print surface, printing speed, and environmental conditions such as humidity. Precise control over these conditions, along with pre-printing, can reduce the degree of inconsistency in printed spot size and volume. However, the precise control can require a skilled user to supervise the process. Furthermore, the rate of printing is slowed down, decreasing throughput and efficiency of the printing process. Printed spot size can become irregular, requiring a lower density of printed spots. Pre-printing to a dummy surface is standard protocol to remove excess material from the exterior of the printing pins prior to starting the intended printing. However, pre-printing wastes material, and causes a delay which lowers printing throughput and efficiency.
Additional Technologies by these Inventors
- Complete Transfer of Liquid Drops by Modification of Nozzle Design
- Micropumping of Liquids by Directional Growth and Selective Venting of Bubbles
- High-speed Switching of Droplet by Electric Meniscus Actuation
- On-chip, Real-time Feedback Control for Electrical Manipulation of Droplets
- Localized Droplet Heating with Surface Electrodes in Microfluidic Chips
- No-Assembly Devices for Microfluidics Inside a Cavity
- Methods of Restoring and Maintaining Gas Film on Superhydrophobic Surfaces while Underwater
- Membraneless Fuel Cell with Self-Pumped Fuel and Oxidant
- Microstructured Cathode for Self-Regulated Oxygen Generation and Consumption
- Liquid-Repellent Surfaces Made of Any Materials
- A Low-Profile Flow Shear Sensing Unit
- Method for Commercial Production of Super-Hydrophobic Materials
- Method of Fluid Manipulation By Electrodewetting
Tech ID/UC Case
20288/2006-007-0
Related Cases
2006-007-0
- 國家/地區
- 美國
