Xerox 6100BD - Phaser Color Laser Printer Fundamentals page 101

Generic MICR Fundamentals Guide
Xerographic ink spots can be larger than the ANSI specifications
because of the low ferromagnetic component of the dry ink. Also,
the xerographic soft spotting effect minimizes the signal pattern
defect.
The following table shows the Xerox MICR printing system
xerographic specification for extraneous ink or spots in the clear
band.
Any number of black spots
Total 16 black spots per page 0.25 mm – 0.40 mm* / 0.01 inch – 0.016 inch
One black spot per page
No black spots
*No more than one spot per 6 by 3 mm / 0.25 by 0.125 inch area is allowed if
the spot is greater than 0.01 inch/0.25 mm in size.
Examples of extraneous ink or spots are illustrated in the
following figure.
0.25 mm and smaller / 0.01 inch
0.40 mm – 0.50 mm / 0.016 inch – 0.02 inch
0.50 mm or larger / <0.02 inch
Quality control
6-15