Custom Audio Electronics KPM862, Руководство пользователя

Страница: 95 / 152

7 ALIGNMENT
Device is provided with a CIS sensor for the use of alignment black mark in order to handle:
•
roll of tickets with pre-printed ields and a ixed length;
•
fan-fold module of tickets with pre-printed ields and a ixed length.
The alignment black mark may be formed by (see paragraph 9.6 ):
•
black mark printed on paper;
•
hole between two tickets;
A CIS (Contact Image Sensor) sensor consists of a linear array of RGB LEDs (red, green and blue) that turn on and off in
rapid sequence illuminating the original image to be scanned and of a row of CIS sensors for record the changes in relect
-
ing brightness, without using mirrors and lenses.
The presence of the black mark is therefore detected by the amount of light that returns to the sensor, considering that the
light is relected by the white paper and absorbed by the black mark.
To use tickets with holes, it is possible to use the same sensors as “transparence” sensors. The presence of the hole is
detected as if it were a black mark printed on the paper.
To guarantee the alignment, it is necessary to correctly choose how to use the CIS sensor to use for the notch/b.mark
detection depending on the type of paper.
To do this, you must enable the parameter “Notch/B.Mark Pos. F1” during the setup procedure (see
chapter 6 ) and set the
correct value of this parameter as described in the following table:
VALUE OF THE
“NOTCH/B.MARK POS. F1” PARAMETER
BLACK MARK TYPE
Disabled Alignment disabled
Bottom Black mark printed on the non-thermal side of paper
Transparent Hole between tickets
The following paragraphs show how to correctly set the coniguration parameters of device in order to assure the alignment.
95