Source Technologies ST9510 manual Micr Line, Auxiliary On-Us Field Positions 65 to

MICR Line

Accurate high-speed processing of your checks by financial institutions is enabled by the accuracy and integrity of the data in the MICR line. Refer to figure 3.1 for the location of the following MICR line fields. The MICR line is read from right to left with position one being the right most position proceeding to position sixty-five on the left. The MICR line must be printed at exactly eight characters per inch.

Auxiliary On-Us Field Positions 65 to 45

This field usually contains the check serial number for commercial size checks and possibly account control information. It is bounded by On-Us symbols. (;). It is not included on personal, small size checks.

External Processing Code (EPC) Field Position 44

This one digit field is position 44 of the MICR line. This field is usually left blank. The use of this field is reserved by the ABA and is controlled by the ASC X9B Standards Committee.

Routing Field Positions 43 to 33

The routing field is bounded by Transit Symbols (:) in positions 43 and 33. It contains fixed format information about the drawee institution. Consult with your bank for the specific data field to be placed here for each of your accounts.

On-Us Field Positions 32 to 14

The On-Us field contains the makers’ account number. The structure and content of this field is left to the drawee bank. On personal checks this field also contains the check serial numbers. The On-Us field may not consist of more than 19 characters. An On-Us (;) symbol must appear immediately to the right of the account number.

Blank Field	Position 13
Position 13 is always left blank.
Amount Field	Positions 1 to 12

The amount field is the right most field in the MICR line. It remains blank until it is printed by the bank of first deposit. When the check enters the banking system, the bank of first deposit encodes this field from data in the convenience amount field. It will be bounded by Amount Symbols (/).

ST Secure MICR Printer User’s Guide	11	2006, Source Technologies
March 2006		All Rights Reserved