Seiko Epson Corporation developed a thin-film piezo element that boasts the world’s highest degree of distortion – according to Epson’s research. Volume production of next-generation Micro Piezo print heads that feature these elements as actuators will be launched in April 2007.
The Micro Piezo print head is an inkjet print head which utilizes Epson’s original Micro Piezo technology. This technology uses electrical signals to change the shape of piezo elements and then fires ink droplets according to the physical force generated by the change in shape of these elements. Epson’s Stylus Photo and Stylus Pro inkjet printers, which utilize Micro Piezo print head technology, are photo-quality printers that have consistently played leading roles in the Japanese inkjet printer market and earned high approval and trust from customers.
Epson is currently focusing its development efforts on creating a next-generation Micro Piezo print head to support expansion of the inkjet field beyond consumer printers and to strengthen its applications for business and industry. Through these efforts, Epson has achieved the following:
- Created a piezo element with the world’s highest degree of distortion through film thickness reduction and materials development.
- Raised density levels by developing and utilizing innovative thin-film processing techniques.
-
Designed a high-density ink reservoir through independent MEMS technology development.
As a result, Epson has managed to develop a nozzle with a density of 360 dpi—the world’s highest for an inkjet print head using piezoelectric technology—while at the same time maintaining the advantages of conventional Micro Piezo print heads. Epson has also managed to establish a completely independent manufacturing process by producing the piezoelectric materials in-house. The installation of these next-generation Micro Piezo print heads in printers and other devices will make it possible to design speedier and more compact inkjet equipment than ever before.
In the future, Epson plans to focus on Micro Piezo technology as one of its core technologies. By continuing to develop Micro Piezo technology, Epson will be able to expand its usage potential beyond consumer applications to encompass other areas such as business and industry.
Special characteristics of Epson’s original Micro Piezo print head
This print head fulfils all the requirements for an inkjet print head—superior ink ejection performance, compatibility with a wide variety of inks, and durability. The print head also makes it possible to control not only water-based pigment ink with superior water and light resistance, but also a wide variety of ink types in miniscule quantities, and fire them with high precision.
1. Ink ejection performance
- Meniscus control, which limits vibration on the surface of the liquid in the nozzle, makes it possible to achieve improved gradation and faster print speeds in addition to the following advantages:
- Perfectly spherical dots
- High precision impact point control
- Higher drive frequencies
- Variable-sized ink droplets (MSDT: multi-sized dot technology)