Skew - Xerox 6100BD - Phaser Color Laser Printer Fundamentals

Quality control
The vertical position for the entire line is evaluated with the MICR
Gauge. To check the vertical position, line up the right edge of
the check with the right edge of the gauge, and place the bottom
edge of the check as far down as possible between the flexible
and the hard plastic on the gauge. Notice if the characters are
between the top and bottom lines of the character boxes. If the
characters appear too high or too low (see the following figure), a
software or a registration problem is indicated.
Entire MICR line too high
Entire MICR line properly centered vertically
Entire MICR line too low
Figure 6-6. MICR line vertical position

Skew

Skew is the rotational deviation of a character from the vertical
with reference to the bottom edge of the document. The
maximum skew or tilt of any character or line cannot be more
than 1.5 degrees either way, using the bottom edge of the
document as the horizontal reference.
Generic MICR Fundamentals Guide 6-9