Oki LE840, Техническое описание

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8.81 ^JT HEAD TEST INTERVAL
Format: ^JT####,a,b,c
#### = The number of labels printed between executing head checks
0 to 9999
When omitted: 0 right after start-up
If ^JT command is already received, the previous set value is valid.
a = Selection of element range to check
Y : Element range is selectable.
N : Element range is not selectable.
When omitted: N right after start-up
If ^JT command is already received, the previously set value is valid.
b = First element to check
0 to 9999
Default: 0
When omitted: 0 right after start-up
If ^JT command is already received, the previously set value is valid.
* When exceeding 9999, this is corrected to 9999.
c = Last element to check
0 to 9999
Default: 9999
When omitted: 9999 right after start-up
If ^JT command is already received, the previously set value is valid.
* When exceeding 9999, this is corrected to 9999.
*1 When label duplication is disabled with ^PQ command, a head check is performed at the specified
interval. However, when label duplication is enabled (two or more) or pause interval is enabled
(one or more), a head check is performed only once before the label is issued.
*2 After the printer is turned on, the head check setting is set to disabled even when this command is
received. To enable the head check setting, ~JN needs to be received before this command.
*3 Even if the print head element range is specified by this command, the head check is applied to the
all elements.