Toshiba B-570 manual When using labels transmissive sensor

6. DIAG. TEST OPERATION

EM18-33010A (Revision Date: Jan. 14 ‘99)

6.3 PARAMETER SETTING MODE

NOTE: The following operation cannot be performed unless the sensor type is changed by the issue command or feed command.

(1) Using the sensor adjustment in Diag. mode, measure the sensor voltage at the following four points.

Label:

Tag paper: Example:

Print area Backing paper Print area Black mark

[ R E F L E C T I V E ] 2 . 8 V

[ T R A N S M I S S I V E ] 4 . 1 V

(2) Using the following formula, calculate the threshold from the measured voltage:

When using labels (transmissive sensor):

Threshold = (Max. voltage at the backing paper) - (Voltage at the print area) - 0.7V

e.g.)	2.0V	= 4.2V		- 1.5V - 0.7V
When using perforated labels (transmissive sensor):
		A			B
Threshold =			(Max. voltage at the backing paper) -			Min. voltage at the backing paper	-
		A		2
			Max. voltage at the backing paper
				2
e.g.)	2.2V	= 4.4V		- (2.8V/2) - (1.6V/2)

When using labels with black marks (reflective sensor):

CD

Threshold = (Min. voltage at the print area) - (Min. voltage at the black mark)

2

e.g.) 0.4V = (1.5V - 0.7V)/2

Backing Parper	Perforation	Label Black Mark	Label gap
Label
		Backing Paper
A
(4.4 V)		(2.8 V)
		B	C
		(0.7 V)	(1.5 V)

D

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