. for other uses see tdk disambiguation . tdk corporation type public kk traded as tyo 6762 industry electronics founded december 7 1935 headquarters nihonbashi ch tokyo japan area served worldwide key people takehiro kamigama president products cd dvd blu ray electrical components power supplies revenue 875.73 billion us 10.55 billion 2011 1 operating income 63.842 billion us 769.18 million 2011 1 net income 45.26 billion us 545.34 million 2011 1 total assets 1 060.85 billion us 12.78 billion 2011 1 total equity 539.76 billion us 6.50 billion 2011 1 number of employees 87 809 1 website www.global.tdk.com tdk corporation tdk tdk kabushiki gaisha formerly tdk electronics co. ltd is a japanese multinational electronics company that manufactures electronic materials electronic components and recording and data storage media . its motto is contribute to culture and industry through creativity . 2 tdk is an initialism of the original japanese name of the company tokyo denkikagaku k gy tokyo electronics and chemicals . the company is listed on the tokyo stock exchange and is a constituent of the nikkei 225 and topix indices . contents 1 history 2 sponsorship and advertising 3 museum 4 tdk products 5 see also 6 references 7 external links history edit a tdk sa 90 compact cassette tdk was founded in tokyo japan on 7 december 1935 to manufacture the iron based magnetic material ferrite which had been recently invented by yogoro kato and takeshi takei . 3 in 1952 and 1957 they began production of magnetic tapes with compact cassette tapes following in 1966 ; it is for these that the company is most widely noted . tdk used to manufacture an extensive portfolio of magnetic and optical media including several formats of videotape and blank cd r and recordable dvd discs until the recording business was sold to imation in 2007 . operations in the usa began in 1965 with a new york city office 4 and european operations began in 1970 with an office in frankfurt west germany . 5 in the 1990s tdk s mass storage division included brushless dc spindle motors magnetoresistance mr heads and thin film heads . since 1997 tdk has gradually withdrawn from the production of compact cassettes . first with the ma x and ar acoustic response then the ad acoustic dynamic and sa x line in 2001 and 2002 respectively then the ma metal alloy line in 2004 . the sa super avilyn and d dynamic lines were withdrawn in 2012 under imation ownership . industry trends see the company moving into new forms of media ; in 2004 tdk was the first media manufacturer to join the companies developing bd post dvd technology . 4 tdk operated a semiconductor division in california for about a decade but divested it in 2005 . since june 2006 takehiro kamigama has been president having been nominated by his predecessor hajime sawabe who currently serves as chairman . in late 2007 imation acquired tdk s recording business including flash media optical media magnetic tape and accessories for 300 million . 6 7 this also included a license to use the tdk life on record brand on data storage and audio products 8 for 25 years . 6 in september 2015 imation announced that it had agreed to relinquish this license 9 and would cease selling tdk branded products by the end of the year . 10 sponsorship and advertising edit the tdk sign at piccadilly circus in london . tdk sponsored dutch giant ajax for several years in the 1980s during which it won the european cupwinners cup in 1987 . from 1993 to 1998 tdk were also the sponsors of the english football club crystal palace who were promoted to the premier league twice during this era though lasting for just one season before being relegated on both occasions . tdk was also a minor sponsor of the brisbane broncos rugby league team during the early 90 s. it is a current sponsor of the iaaf world championships in athletics . it also sponsors activities and events such as those at the cross nightclub in central london and since 1990 has had a prominent sign at piccadilly circus although it was announced in november 2014 that they would not be renewing the contract . 11 tdk also owned a sign on one times square since 2000 . the screen is placed under that of toshiba and can be seen during the annual times square new year s ball drop . in 2002 the company s consumer electronics division was the presenting sponsor of the third annual jammy awards with the tdk live performance of the year award honoring the best live performance that was legally available on the web as a free download . the award was given to the band moe . for their performance at the bonnaroo music festival . tdk s own football club based in nikaho akita recently split from the corporation to become independent football club blaublitz akita with the aim for the professional leagues . museum edit tdk operates a company museum at its hirasawa plant in japan . tdk products edit d60 audio cassette from 1979 ma60 a later example d c180 this three hour audio cassette was unusually long vhs c video cassettes blank dvd minidisc dds 4 data cartridge see also edit companies portal references edit a b c d e f tdk corporation . financial results for fy march 2011 pdf . tdk japan site motto and principles . . tdk hong kong site . a b tdk japan site corporate history . tdk europe site corporate history . a b austin modine 2007 04 19 . imation buys tdk s recording media biz . the register . archived from the original on 2015 09 12 . retrieved 2015 12 17 . tdk is to sell its recording media business to imation for 300m in stock and cash . . . under the agreement imation will use the tdk brand for present and future recordable magnetic optical and flash media products worldwide . the right is revokable by tdk after 25 years . imation and tdk agree to imation s acquisition of tdk brand recording media business for 300 million in stock and cash press release imation.com 19 april 2007 . imation corp our history . imation corporation . archived from the original on 2015 09 10 . retrieved 2015 12 17 . imation acquired the recording media business of tdk corporation 2007 with an exclusive license to the tdk life on record brand for data storage and audio products . imation announces steps to accelerate strategic transformation press release . imation via reuters . 2015 09 28 . as part of its efforts to become a pure play data storage and security company imation reached a definitive agreement with tdk under which . . imation s license rights to the tdk life on record trademark will terminate archive url is malformed save command help tdk life on record . archived from the original on 2015 12 11 . retrieved 2015 12 17 . effective december 31 2015 imation corp. will no longer be selling products licensed under the tdk life on record brand . . where is the world s best billboard site bbc news 19 november 2014 . external links edit wikimedia commons has media related to tdk . official website official global website tdk us website the tdk history museum v t e electronics industry in japan companies current alaxala networks alinco alps alpine anritsu aor audio technica brother canon casio citizen watch cosina d & m holdings denon marantz daikin dainippon screen denso dnp eiki eizo elpida esp guitars fanuc fostex fuji electric fujifilm fuji xerox fujitsu fujitsu ten funai furuno futaba hamamatsu photonics hirose electric hitachi clarion hitachi maxell hoya ibanez icom ikegami tsushinki i o data iwatsu japan display jeol jrc jr propo jvc kenwood jvc kenwood kawai keyence kiramek konica minolta ko propo korg kyocera luxman mabuchi motor mamiya maspro melco minebea mitsubishi electric mitsumi electric murata manufacturing mutoh nakamichi nec nec casio mobile communications nichia nichicon nidec nidec copal corporation nikon nintendo nitto denko oki olympus omron onkyo orion electric panasonic pioneer pixela renesas electronics ricoh pentax rohm roland rubycon sansui sanwa electronic sega sammy sega seiko group pulsar seiko seiko epson seiko instruments sharp shimadzu sigma sony sony interactive entertainment snk playmore star micronics stax sumitomo electric taiyo yuden tamron tdk teac tiger tokyo electron topcon toshiba uniden wacom yaesu yagi uda yamaha yaskawa zojirushi zoom zuken defunct aiwa akai bronica chinon contax konica minolta national norita okaya optical sanyo other electronic industries association of japan incj japan electronic industries development association japan electronics and information technology industries association category v t e nikkei 225 companies of japan 7 & i advantest on agc ajinomoto alps ana amada aozora bank asahi breweries asahi kasei astellas bridgestone canon casio chiba bank chiyoda chuden chugai citizen comsys concordia financial credit saison dai ichi life daiichi sankyo daikin dainippon screen dainippon sumitomo pharma daiwa house daiwa securities denka denso dentsu dnp dowa ebara eisai fanuc fast retailing fuji electric fuji heavy industries fujifilm fujikura fujitsu fukuoka financial furukawa co. ltd. furukawa electric gs yuasa heiwa real estate hino hitachi hitachi construction machinery hitz hokuetsu paper honda ihi inpex isetan mitsukoshi isuzu itochu jfe j. front retailing jgc jr central jr east jr west jsw jt jtekt jx kajima kepco kao kawasaki kddi keio keisei kikkoman kirin k line kobelco komatsu konami konica minolta kubota kuraray kyocera kyowa hakko kirin marubeni maruha nichiro marui matsui securities mazda meidensha meiji holdings mes minebea mitsubishi chemical mitsubishi corporation mitsubishi electric mitsubishi estate mitsubishi heavy industries mitsubishi logistics mitsubishi materials mitsubishi motors mitsui & co. mitsui chemicals mitsui fudosan mitsui kinzoku mitsumi electric mizuho mol ms & ad mufg nec neg ngk nichirei nikon nippon express nippon kayaku nippon light metal nippon ham nippon paper industries nippon soda nippon suisan nissan nissan chemical nisshin seifun nisshin steel nisshinbo nittobo nitto denko sompo japan nipponkoa holdings nomura nsg nsk nssmc ntn ntt ntt data ntt docomo nyk obayashi odakyu oji holdings corporation oki okuma olympus osaka gas pacific metals panasonic pioneer resona ricoh sapporo holdings secom sekisui house sharp shimz shin etsu shinsei bank shionogi shiseido shizuoka bank showa denko showa shell sky perfect jsat softbank sojitz sony sony financial sumco sumitomo chemical sumitomo corporation sumitomo electric sumitomo heavy industries sumitomo metal mining sumitomo mitsui financial sumitomo mitsui trust sumitomo osaka cement sumitomo realty suzuki t & d taiheiyo cement taisei taiyo yuden takara takashimaya takeda tdk teijin tepco terumo tobu toho toho zinc tokai carbon tokuyama corporation toyo seikan tokio marine tokyo dome tokyo electron tokyo gas tokyo tatemono tokyu tokyu land toppan toray toshiba tosoh toto toyobo toyota toyota tsusho trend micro ube unitika uny yahoo japan yamaha yamato transport yasakawa yokogawa electric yokohama rubber retrieved from 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