EIZO is committed to the highest manufacturing standards
EIZO is committed to excellent workmanship, attention to detail, and long-term reliability in its products. This commitment to quality is realized in manufacturing, because it is here that the real products of the EIZO brand emerge from original, groundbreaking achievements in research and development.
We are careful not to give up control of a single process along the way. Although it is common practice to outsource production in the monitor industry, EIZO has been designing, developing and manufacturing its products for 40 years now with the help of its employees in EIZO factories.
Principles – Quality is the top priority
EIZO is appreciated worldwide for the unique features it offers in terms of high product quality, innovative design, and long-term reliability, whether in health care, colour management, digital photography, the financial industry, broadcasting, post-production, graphic design, or CAD.
To understand what our corporate identity is based on, it is essential to start by looking at the ‘quality’ that informs the development and manufacturing of our products.
Development phase – With a constant focus on product quality and the environment
From the development phase onward, we pay constant attention to product quality, the environment, and social impact. Thanks to our principle of developing and manufacturing in-house, we are able to react effectively at all times and deliver superior products to highly diverse markets all over the world. In the process, we strive not only to meet but to exceed the standards by which environmentally-friendly products are certified. For example, EIZO has participated in TCO forums since 1992, helping to formulate and implement guidelines for electrical and electromagnetic emissions, energy efficiency, and electrical safety.
And we don’t let up on our efforts, as evidenced by the fact that we fulfill the international ISO 14020 standard for environmental labeling and strictly conform with all the legal regulations and requirements of the countries where we do business. Learn more about environmental sustainability at EIZO.
Our commitment to preserving and protecting the environment is reflected in our manufacturing process. Our just-in-time system for parts supply requires little or no storage space, because deliveries are coordinated directly with production. Raw materials are processed on our assembly lines within two to three hours of delivery. As a result, we are able to keep our infrastructure in plants and warehouses as small as possible, reducing the demand for energy, cooling, and heating. At the same time, we ensure that our employees receive the right parts at the right time in the right quantity in keeping with the first-in first-out principle.
Manufacturing system – Ensures high production accuracy without sacrificing efficiency
Our manufacturing system is based on production with small ‘batch numbers.’ A ‘batch’ consists of two or more monitors in a batch production series. A process known as ‘cellular manufacturing’ is used for these batch series. In this process, the products are assembled by a group of four or five EIZO employees working in accordance with the ‘five-at-a-time’ principle.
For example, if a total of 25 monitors have to be assembled in a series production batch, five groups of five monitors are produced. In the unlikely case that a monitor component such as a screw, damping element, or plug connector remains on the assembly line after the groups of five are completed, our employees immediately set aside the five monitors that were just assembled and take appropriate corrective action.
Our system of running cross checks at every step in assembly ensures flexible, immediate reactions and guarantees high production accuracy without sacrificing efficiency.
Test phase – Subject to a strict regimen
After assembly, the new monitors with their unique serial numbers and screen characteristics are subjected to a strict regimen of tests and screen settings. Starting with a preheating phase known as ‘aging,’ the monitor is switched on for the first time and displays a test pattern.
The aging process makes it possible to assess the quality of the image and to set the white balance and gamma adjustment on each LCD panel. Each screen is observed for up to three hours depending on the model. Hardware-based faults, such as a short circuit on a circuit board, usually emerge within this time period, allowing corrective measures to be taken.
If more than three monitors from a production batch do not pass a quality assessment, the entire series production batch is designated as ‘batch out.’ The entire batch is prevented from being sent in its current condition; instead, each monitor in the batch must undergo ‘rework.’ In cases like this, the individual steps in series production must be performed again for each monitor.
This enables us not only to determine the actual cause of the error and take the necessary corrective measures, but also to ensure that other monitors do not have similar, hidden defects. In EIZO assembly, we understand ‘rework’ as a collaborative learning concept that is free from finger-pointing and is based on a fresh assessment of all processes that allows workers and supervisors to contribute new suggestions for improvement.
Final inspection – For outstanding colour and greyscale reproduction
Once the aging process is complete, all the monitors are meticulously inspected and tuned for precise colour and greyscale reproduction and reaction behavior. In addition, monitors undergo a shaking test to identify possible signal fluctuations and ensure that no jitter occurs when the monitor is subjected to vibrations during transport or when used by the customer.
Monitors designed for the graphics industry and health care sector are tuned at the factory by EIZO using the Digital Uniformity Equaliser (DUE). This calibration balances out fluctuations in brightness and colour value in various parts of the screen.
The DUE adjusts greyscale values to ensure uniform brightness across the entire screen, so that even extremely subtle nuances in greyscale can be reproduced with the utmost precision. In addition, luminance flaws are corrected to ensure that the colour monitors are able to render monochrome curves precisely without banding. Strict quality control is especially important for EIZO products designed for the health care sector and graphics industry, as both areas require extreme precision. Our unwavering commitment to high-quality products has enabled us to further improve existing quality control procedures. This is plain to see from the certifications we’ve received. In 1993, we received an ISO 9002 certification for our quality management system. In 2005, our quality management system for medical devices was given an ISO 13485 certification.
Once our monitors have proved that all their technical and physical characteristics are up to EIZO quality standards, they are hand packed carefully in their shipping boxes for delivery to the customer.
The quality of EIZO products is ultimately based on the quality of the manufacturing. That’s one reason why we continue to invest in our employees through training programmes, qualifications, and special acknowledgments. As a result, many employees in manufacturing at EIZO already have more than ten years’ experience assembling monitors, calibrating screens, configuring the DUE, and ensuring that our products undergo strict quality control. In order for these specialised tasks to be performed by qualified personnel, it is essential to establish a bond between the employee and the company. In addition to personally recognizing and appreciating each individual in our manufacturing process, we motivate them to be creative and develop themselves further. This helps us make our processes even more efficient and environmentally friendly as well as more competitive on a global scale.