Scantron OpScan 4ES Operator's Manual page 81

Chapter 4: Scanner Modes
Scantron Score Emulation Mode
3. Scantron Score forms require that printers used
with an iNSIGHT 4ES scanner are positioned at 2.5
inches and 6.2 inches. Check the printer(s) to
ensure that they are in the correct position.
Operator's Guide 61