TS1700/TK18 PRINTERS OPERATION MANUAL
•
Ticket picked-up sensor is used to detect that a ticket has been printed but not picked up. In
order to do so is has to be installed in an appropriate paper nozzle or presenter. Final user
can detect these errors by the LED blinking pattern, and the application developer can test
them through the
DEL EOT
command, being able to act accordingly. This event can be also
associated to the digital output in a way that when it is triggered it is possible to switch an
external device as a beeper.
•
Black-mark sensor detects the black mark of a pre-cut paper roll so, if the printer is
configured correctly and the black-mark option is enabled the printer could cut the paper by
its pre-cut edge and print the ticket in the physical space that it is intended to.
5.6.1- Black mark sensor
The TS1700 has an optional specific sensor for optical (black) mark detection. (See
APPENDIX –
HOW TO ORDER
)
In order to be able of using this feature, the optical mark sensor must be enabled by programming
command (See command
DC3 ESC FS GS
).
The command that sets black mark offsets (
GS ( G
) require two parameters that must be
measured physically on the ticket: ticket length which is the distance between two consecutive cutting
lines, and distance from black mark to next cutting line. This parameters will be saved into non-volatile
memory.
This command takes into account the distance from the black mark sensor and the cutter blade
which is fixed in a particular assembly. For this reason, this distance must be kept if a different
implementation is taken.
Fig. 5.5.
Black mark programming parameters.
The back surface spectral reflectivity should be 4% and below. The “black mark” may be
replaced
by a hole in the paper.
When the black mark photo-sensor is enabled, the behavior of the printer will change in the
following way:
–
When pressing the paper feed button the printer will feed paper to the next cutting line
according to the ticket length parameter set with the
GS ( G
command (See
SECTION –
CONTROL COMMANDS
) and then it will cut the paper.
–
When sending any cut command to the printer will do the same as above.
–
When sending a
GS FF
command to the printer it will feed paper to the next cutting line.
–
If the printer detects that paper has been fed for a distance larger that the ticket length without
having cut the paper, it will pop a black mark error.
21/62
B
M
d
is
ta
nc
e
tic
ke
t l
en
gt
h
Printing
direction
