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Company Overview


Company name
Seikengraphics Co., Ltd.
President Syota Namita
45,000,000 yen
120 people
July 1950
Head Office Location
842-0031 Saga Prefecture, Kanzaki District, Yoshinogari-cho, Yoshida 135
General machinery and equipment manufacturing industry
Production base (factory)
Head office factory/Kanzaki factory
Sales base construction business license
Tokyo Branch/Beijing Office


  • ISO9001,14001
  • Certified under the Business Innovation Support Act (Fukuoka Prefecture)
  • Certification of plan to introduce advanced equipment, etc. (Yoshinogari Town)
  • Certification of management ability improvement plan (Kyushu Bureau of Economy, Trade and Industry)
  • Certification as a regional future driving company (Ministry of Economy, Trade and Industry)
  • Construction business license (Saga Prefecture)


History of Seikengraphics

The history of Seiken begins about 70 years ago when the new president's grandfather, Isamu Namita, decided to start a newspaper rotary press maintenance company in Kyushu.

This was because at that time, there was a strong desire for a maintenance factory to open in Kyushu since war-torn rotary presses were being used fraudulently. It was against this background that Isamu Namita, who worked at a newspaper printing press manufacturer in Osaka before the war, was able to open a factory in Fukuoka, Kyushu with the support of related parties.

After the company was established in 1950, its main business for a while was maintenance of rotary presses for newspaper companies in northern Kyushu, but as the company took off, it expanded its scope of work and gradually established itself as a manufacturer of accessory equipment for newspaper production. I said. The company established itself in the industry as a manufacturer of lead plate casting machines, which produced lead printing plates, which were the second most popular product after rotary presses at the time.

In particular, in 1968, the industry was surprised by a technical partnership with the American Wood Company, the world's largest manufacturer of lead plate casting machines at the time, and the high-performance automatic lead plate casting called the "Seiken Wood Supermatic" was produced domestically using that technology. The machine became our best-selling product and greatly contributed to establishing our business foundation. However, the strong performance that saw the company rise to the top as a manufacturer of lead plate casting machines did not last long. This was because the shift from lead letterpress printing to resin letterpress and metal lithographic printing occurred, which was the first major innovation in newspaper production since Gutenberg.

In order to survive the technological change that weakened our foundation, we ① streamlined management, ② commercialized equipment compatible with the new plate-making system, ③ expanded and strengthened shipping system equipment, and ④ modified rotary presses and established technology for offset conversion. This was our facility policy.

Since our founding, we have been working on shipping systems such as newspaper carriers, conveyor systems, and truck gate systems. In particular, carriers have continued to develop sequentially, with the first generation being the "spring type," the second generation being the "BSG type," and the third generation being the "CSG type," and the CSG carrier has now evolved to the Mark III. As a result, it has been adopted by almost every newspaper company in Japan, and has been praised to the point that it is called "Carrier" by Seiken.

As mentioned above, our business centered on maintenance, repair, and modification of rotary presses is the origin of our company. In 1962, we developed and commercialized the first letterpress rotary press, and started our business by producing new rotary presses. Later, the company seized the opportunity of the major change in rotary presses from letterpress rotary presses to offset rotary presses, and sought to expand into the offset rotary press field. First, we established an offset conversion technology to convert letterpress rotary presses into offset rotary presses, and while converting rotary presses in Japan and overseas (Russia, Southeast Asia, South Korea, etc.) into offset presses, we also developed small-sized printers in order to respond to the color shift in the industry, and a lightweight satellite-type color offset machine that received high praise.

Since then, we have expanded our rotary press division by offering a lightweight and compact off-wheel series. In particular, in 2002, we developed Japan's first 4x1 web press, the Seiken 65-type offset web press, which caused a huge impact on the industry. In recent years, as heavy, long, and ultra-high-speed machines have become increasingly popular, we launched the "Ecopress 4x1" model, which aims to do the opposite.It was our desire to contribute to the industry with our own unique stance without imitating other companies. As the newspaper industry has matured, our company has been focusing on developing new fields for the past ten years. Energy fields include wind power generation and tidal power generation. The system integration industry field promotes the effective use of robots. Challenges continue in areas such as food production-related equipment and environmental equipment.

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Seikengraphics Co., Ltd.

Saga Prefecture, Kanzaki District, Yoshinogari-cho, Yoshida 135
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