甚麼是negotiating bank, accepting bank, reimbursement bank?

When an exporter presents their document to a negotiating bank, say European Asian Bank Hong Kong, this bank will check whether the document presented complies with the Letter of Credit (L/C) or not, if everything is all right, the bank will pay the exporter immediately (if it is an AT SIGHT L/C, or discount it if it is a TENOR L/C..tenor mean with certain peroid of time say 90 days or 180 days) while sending document to an accepting bank, say Deutsche Bank Frankfurt in the overseas. Of course, the negotiating bank, after paying the exporter, will have to ask for repayment of this money, in this case, they will ask Deutsche Bank Frankfurt to reimburse them through say, Union Bank of Switzerland, Frankfurt Office (If the L/C is denominated in EURO DOLLAR) or to reimburse them through say, Citibank, New York (If the L/C is denominated in US DOLLAR)

In this case,

NEGOTIATING BANK----EUROPEAN ASIAN BANK HONGKONG
ACCEPTING BANK --- DEUTSCHE BANK FRANKFURT
REIMBURSEMENT BANK ---UNION BANK OF SWITZERLAND FRANKFURT OR CITIBANK NEW YORK (depend on what currency of the L/C)

2006-11-09 18:13:01 補充：
I think for definition itself, you can find it in your text book.