Xerox 6100BD - Phaser Color Laser Printer Fundamentals page 56

Document design
Auxiliary On-Us field
4-10
1. Amount
2. On-Us
3. Transit
4. External processing code (optional)
5. Auxiliary On-Us (optional)
All checks have at least three of the fields (Amount, On-Us, and
Transit). Commercial checks may also have an Auxiliary On-Us
field, located on the left of the check. Some checks also have an
External Processing Code (EPC) digit, located between the
Transit and Auxiliary On-Us fields.
The Amount and Transit fields have a standardized content,
while the contents of the On-Us and Auxiliary On-Us fields can
vary to meet the individual bank requirements. The following
figure illustrates the placement of the four fields on a check in the
U. S.
Transit Number field
Figure 4-4. MICR line fields
On-Us field Amount field
(blank at time of printing)
Generic MICR Fundamentals Guide