Sekonic SR-6500 HYBRID Operating Manual page 112

(8)
Clear zones
Do not print in colors other than dropout colors in 0.8mm around reading
zones and 0.8mm from timing mark longitudinal ends.
Reading zone:
The vertical direction of the data mark standard position is the height set
by command, and the horizontal width refers to the area of the data mark
frame width.
Dropout colors:
Dropout colors refers to colors that are already printed or written on a
document that can be seen by human eyes but cannot be recognized by a
reading sensor.
(9) Black ink printing
0.8
Timing mark
Reading zone
Descriptions, etc. can be printed in areas except print prohibition zones
and clear zones. However, never print anything at PCS 0.15 or more other
than timing marks in timing mark columns from the top edge of sheet to
the bottom edge on either side of the paper.
(10) Printing on back surface
You can print on the back surface except in print prohibition zones.
However, do not print at PCS exceeding 0.15 in clear zones on the front
surface in case of bleeding through from the back.
(11) ID mark
Set an ID mark for identification as necessary.
Size: 1.0mm or wider x 3mm or longer.
Reading darkness:
Angle: ±5 degree or less (against the line perpendicular to the
standard side)
(12) Mark frame
Rectangles, ovals, and circle shapes have been conventionally used for
mark frames.
Frame size should be smaller than the reading zone in various reading
methods (direct under type, timing control type, mark to mark type, and
FACOM type).
Recommended sizes are as follows.
Rectangles: Vertical 0.8-1.5mm Horizontal 3-3.5mm
Ovals: Vertical 1.5-2.5mm Horizontal 3-4.3mm
Circles: Diameter 3.0-3.5mm
*Maximum horizontal length differs depending on sensor
pitch.
Adjust horizontal length = (sensor pitch - 0.7mm) or less.
Appendix ■ Sheet creation reference
3.5 0.8
0.8
Reading zone specified
by command
0.8
Clear zone [Unit: mm]
PCS 0.8 or higher
3mm or longer
1.0mm or wider
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