ダイナースクラブ
Diners Club International (DCI), founded as Diners Club, is a charge card company owned by Discover Financial Services. Formed in 1950 by Frank X. McNamara, Ralph Schneider, Matty Simmons, and Alfred S. Bloomingdale, it was the first independent payment card company in the world, and it established the concept of a self-sufficient company producing credit cards for travel and entertainment. Diners Club International and its franchises serve individuals from around the world with operations in 59 countries.