TDK Corporation 1-13-1, Nihonbashi Chuo-ku, Tokyo 103-8272 Japan Contacts; TDK Corporation(Tokyo) Corporate Communications Department +81(3)5201-7102 Michinori Katayama TDK U.S.A. Corporation Francis J. Sweeney +1(516)535-2600 TDK UK Limited Ron Matier +44(1737)773773 FOR IMMEDIATE RELEASE TOKYO - January 29, 2004 TDK Corporation today announced its Consolidated business results prepared in conformity with accounting principles generally accepted in the United States of America (the "U.S. GAAP") for the 3rd quarter ("Qtr.") of fiscal year ("FY") 2004, the three months ended December 31, 2003, and for the nine-month-period from April 1, 2003 through December 31, 2003 were as follows; 1) Summary Consolidated results (October 1, 2003 - December 31, 2003) Term Item Net sales Operating income Income before income taxes Net income Per common share : Net income / Basic Net income / Diluted The 3rd Qtr. of FY2004 The 3rd Qtr. of FY2003 Change (October 1, 2003 - December 31, 2003) (Oct. 1, 2002 - Dec. 31, 2002) (Yen millions) % (U.S.$ thousands) (Yen millions) % (Yen millions) % 181,851 18,139 100.0 10.0 1,699,542 169,523 161,678 6,172 100.0 3.8 20,173 11,967 12.5 193.9 18,712 10.3 174,879 6,055 3.7 12,657 209.0 14,132 7.8 132,075 4,575 2.8 9,557 208.9 Yen 106.75 Yen 106.69 U.S.$ 1.00 U.S.$ 1.00 Yen 34.49 Yen 34.49 (Sales breakdown) Term Product Electronic materials and components Electronic materials Electronic devices Recording devices Semiconductors & others Recording media & systems Total sales Overseas sales The 3rd Qtr. of FY2004 The 3rd Qtr. of FY2003 Change (October 1, 2003 - December 31, 2003) (Oct. 1, 2002 - Dec. 31, 2002) (Yen millions) % (U.S.$ thousands) (Yen millions) % (Yen millions) % 142,134 78.2 1,328,355 121,864 75.4 20,270 16.6 42,998 28,957 65,425 23.7 15.9 36.0 401,850 270,626 611,449 41,553 28,868 47,818 25.7 17.9 29.6 1,445 89 17,607 3.5 0.3 36.8 4,754 2.6 44,430 3,625 2.2 1,129 31.1 39,717 21.8 371,187 39,814 24.6 181,851 135,627 100.0 74.6 1,699,542 1,267,542 161,678 118,638 100.0 73.4 (97) 20,173 16,989 Notes: 1. Consolidated results for the 3rd quarter of FY2004 and FY2003 are unaudited by independent accountant. 2. U.S.$1 = Yen 107 1/12 -0.2 12.5 14.3 Consolidated 9 months Consolidated results Consolidated results (April 1, 2003 - December 31, 2003) Term Item Net sales Operating income Income before income taxes Net income Per common share : Net income / Basic Net income / Diluted The nine-month-period of FY2004 (April 1, 2003 - December 31, 2003) (Yen millions) % (U.S.$ thousands) The nine-monthperiod of FY2003 Change (Apr. 1, 2002 - Dec. 31, 2002) (Yen millions) % (Yen millions) 100.0 40,072 3.5 25,968 % 498,130 42,159 100.0 8.5 4,655,421 394,009 458,058 16,191 43,726 8.8 408,654 13,691 3.0 30,035 219.4 33,389 6.7 312,047 9,220 2.0 24,169 262.1 Yen 252.02 Yen 251.96 U.S.$ 2.36 U.S.$ 2.35 8.7 160.4 Yen 69.47 Yen 69.47 (Sales breakdown) Term Product Electronic materials and components Electronic materials Electronic devices Recording devices Semiconductors & others Recording media & systems Total sales Overseas sales The nine-month-period of FY2004 (April 1, 2003 - December 31, 2003) (Yen millions) % 396,486 79.6 125,300 81,408 176,848 The nine-monthperiod of FY2003 Change (Apr. 1, 2002 - Dec. 31, 2002) (Yen millions) % 3,705,477 356,136 77.7 40,350 11.3 25.2 16.3 35.5 1,171,028 760,823 1,652,785 130,471 88,161 125,991 28.5 19.2 27.5 (5,171) (6,753) 50,857 -4.0 -7.7 40.4 12,930 2.6 120,841 11,513 2.5 1,417 12.3 101,644 20.4 949,944 101,922 22.3 498,130 370,370 100.0 74.4 4,655,421 3,461,402 458,058 330,729 100.0 72.2 (U.S.$ thousands) (Yen millions) (278) 40,072 39,641 % -0.3 8.7 12.0 Notes: 1. Consolidated results for the nine-month-period of FY2004 and FY2003 are unaudited by independent accountant. 2. U.S.$1 = Yen 107 2/12