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Mar.1962
Sony Chemicals Corporation Established.
Sony Corporation put the Japan's first transistor radio TR-55 on the market in 1955, which achieved significant downsizing with the use of transistors in place of existing vacuum tubes. The company also succeeded in developing a copper foil with adhesive for printed circuit board (PCB) for transistor radios jointly with Rubber and Asbestos Inc. in the United States (hereafter referred to as US R&A). The company imported this copper foil manufactured by US R&A and subcontracted the processing to a domestic PCB maker. However, in anticipation of the growing demand for transistor radios, the company signed a technical assistance contract with US R&A (later acquired by Pittsburg Plate Glass Co.) to encourage domestic production. Then as a wholly-owned subsidiary of Sony Corporation for manufacturing and sales of copper foil products for circuits and industrial adhesive products, Sony Chemicals Corporation was founded.
Mar.1963
Sony Chemicals Corporation
Broke into the liquid adhesive domain to build up a new core business.

Sony Chemicals Corporation started production of 「Z782」, a liquid adhesive for polyvinyl chloride (PVC) steel sheets with the opening of Haneda Plant. The company released Bondmaster "Tuff" for general-purpose adhesive for home use followed by a series of products including "Clear," "Epoxy" and "Vinyl." For industrial adhesives, as the certification of UL (Underwriters Laboratory) became mandatory for fixing of electronic parts in electrical appliances, chloroprene-rubber base flame retardant adhesive 「SC12N」 went on sale for fixing of electronic parts, so the company expanded the business in both domains, industrial use and home use. The next year the company also pushed into the industry of sealing materials for building materials.
Apr.1963
Sony Miyagi Corporation
Put the world's first home-use video tapes into commercial production.
In 1950, Sony Corporation developed both paper-based magnetic recording tape and Japan's first tape recorder, thus taking the first step in their corporate history. In 1954, the company opened their Sendai Plant of Tokyo Tsushin Kogyo Corporation (later called the Sendai Technology Center of Sony Corporation) in Tagajyo, near the city of Sendai, Miyagi Prefecture, and began fully-fledged production of magnetic materials. The manufacturing unit of this plant evolved into the present Tagajyo Plant of Sony Chemical & Information Device Corporation. In 1958, they began mass production of audio tapes and in the same year, launched production of the first home-use video tapes: Model V21L, for the world's first home-use video tape recorder: Model VTR2000 that was put on the market in 1964.
Apr.1965
Sony Chemicals Corporation
Expanded the application of bonding technologies to double coated tapes.
Sony Chemicals Corporation also moved into the double coated tapes industry. Following the introduction of home-use "Tuck Master," the industrial-use "Tuck Master" was also launched in 1967. Particularly the model #1477J introduced on the market in 1968 earned an excellent reputation, so it evolved into the later T4000 Series, which won a position as a standard option of high-performance double coated tapes. In 1971, double coated tapes were adopted for sliding sheets and slack preventing pads for U-matic tapes. In 1975, as a double coated tape for flexible printed circuit board (FPCs), T4100 Series went on sale. This Series also has been well received as a standard option for a wide range of applications.
Mar.1972
Sony Miyagi Corporation
Started mass production of magnetic heads and ferrite cores.
Following the successful production of ferrite in monocrystalline form in 1964, Sony Corporation proceeded to manufacture tape recorder heads in response to the full-scale mass production of the home-use tape recorder Model TC-2850SD. They also started full-blown mass production of ferrite cores for television, in response to the demand for the manufacturing of "Trinitron" color TV Model KV-1310.
To serve the production of tape recorder heads and ferrite cores, Nakada Magnetics Corporation and Sound Magnetics Corporation which later grew to Sony Miyagi Corporation, were established.
In the next year, 1973, Video Magnetics Corporation was established for production of micro inductors for TV and audio applications, and started mass production of video deck heads for broadcasting and professional use in 1976. Video Magnetics Corporation was later integrated into Sony Precision Magnetics Corporation. Later, as more home-use audio equipment, TV sets and video equipment came into widespread domestic use, electronic devices that utilized magnetic heads and ferrite cores in particular, were successively supplied for Sony brand products.
The reliable, high-precision fabrication and assembly techniques as well as the thin-film technology that was developed around that time served as a foundation for the current electronic products and optical devices of ultra-fine nano-micron scale modules.
Jan.1973
Sony Neagari Corporation
Formed Tokai Electronics Corporation.
Sony Corporation launched production of printed circuit board (PCB) for the electronic desktop calculator SOBAX, the first in the industry in 1966. The company additionally started production of PCBs for the cathode ray type (CRT) TV "Trinitron." Driven by the great success of Sony products, in order to keep up with increasing demand and to ensure a stable supply, Tokai Electronics Corporation (wholly owned by Sony Corporation) was founded as a manufacturer specializing in PCBs. (Tokai Electronics Corporation was renamed Sony Atsuta in April 1990.)
Sony Miyagi Corporation
Started production of audio compact cassette tapes.

Miyagi Video Tech Corporation was established for the mass production of audio compact cassette tapes.
The company started mass production of home-use "Betamax" video tapes in 1977, commercial-use U-matic cassette tapes in 1984, and commercial-use "Betacam" video tapes in 1985.
Currently, the company has been enhancing the reliability of Sony products through their production technology, which consists of mold and forming technologies, automated part assembly and packaging technologies for Sony's increasingly sophisticated range of recording media products.
May.1977
Sony Miyagi Corporation
Started production of home-use Betamax video tapes.
Dec.1977
Sony Chemicals Corporation
Took the initiative in commercialization of a hot technology,
Anisotropic Conductive Film (ACF), in the industry.
As LCD panels for digital cameras and cellular phones and also the flat panel displays become widespread, the demand for LCD display devices is increasingly growing. Anisotropic Conductive Film (ACF) is indispensable for the evolution of LCD display devices. This year Sony Chemicals Corporation succeeded in commercializing the ACF before the rest of the industry. The company later expanded the application of ACF to flip chip mounting, and has been applying the know-how accumulated in the development of bonding materials in a variety of fields.

Jan.1979
Sony Chemicals Corporation
Moved into the magnetic tape business on a full scale.

Sony Chemicals Corporation started to move into the new field of the magnetic tape business on a full scale with the start of production of videotapes for home-use Betamax video recording systems. This business expanded later to the production of VHS-format videotapes in 1982 and 8-mm videotapes in 1985 and further evolved into data cartridges for computers.
Oct.1983
Sony Chemicals Corporation
Started integrated production of flexible printed circuit board (FPC) beginning from the selection of raw materials.
Sony Chemicals Corporation initiated the full-scale production of flexible printed circuit board (FPC) that contributed to the reduction in both size and weight of electronic equipment. The following year the fine-pattern flexible printed circuit board for LCDs went on sale. Around this time frame in particular, time-to-market became shorter and a higher degree of engineering expertise and more flexible supply capabilities were required to keep up with the varying market needs. Sony Chemicals Corporation was responding with meticulous attention to detail and the company was getting good results and earning credibility with the public.

Sep.1984
Sony Miyagi Corporation
Started production of business-use U-matic cassette tapes.
Jan.1985
Sony Miyagi Corporation
Started production of business-use Betacam video tapes.
Oct.1985
Sony Chemicals Corporation
Launched production of ink ribbon for thermal transfer printers.

Production of the TR4050 ink ribbon for thermal transfer printers used for printing of barcodes was started at Kanuma Plants. In 1995 the production was also launched at Sony Chemicals Corporation of America (Pittsburg). Printing of barcodes especially used in merchandise logistic applications requires a higher level of clarity and durability, though the company has been meeting the stringent demands with proprietary engineering expertise, and the products have been used worldwide. In 2002, TR4085 Plus was developed. This has become gaining a position of standard model.
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