A-2 A-61133 March 2003
Image mark sizes The scanner can accept a set of three customer-specified image mark
sizes in the overall range of 0.024 to 0.310 inches (0.61 to 7.87 mm).
Image mark sizes can be specified in the machine setup.
Small mark Medium
mark Large mark
Min 0.024 in
(.61 mm) 0.085 in
(2.16 mm) 0.165 in
(4.19 mm)
Image
Length* A Nominal 0.027 in
(0.69 mm) 0.090 in
(2.29 mm) 0.170 in
(4.32 mm)
Max 0.050 in
(1.27 mm) 0.122 in
(3.10 mm) 0.3.10 in
(7.87 mm)
Intermark spacing B Min 0.024 in (0.61 mm)**
Mark from edge of channel C Max 0.045 in (1.14 mm)
Mark from edge of channel D Min 0.074 in (1.88 mm)
Alternate channel spacing E Min 0.048 in (1.22 mm)
* In multi-level search programs, the best final stopping position of documents
results if mark lengths are the nominal size.
** For silver film with maximum Dmin 0.35 and minimum Dmax 0.90, intermark
spacing (B) is 0.019 in. (0.47 mm) min.
NOTE: The minimum large image mark size must exceed the
maximum medium image mark size by at least 0.038 in. (0.97
mm). The minimum medium image mark size must exceed
the maximum small image mark size by at least 0.035 in. (0.89
mm).