2-6
2-6-1 Sensors
Functions
. 1.
Head
Temperature
Detection:
Detects the temperature of the thermal head with a thermistor.
2.
Paper Out Detection:
A photosensor is embedded in the paper guide on the thermal
mechanism. This detects the trailing edge of the paper.
Note 1:
The paper out detector duals as the black mark detector. In such cases, some restrictions exist for black
mark pitch detection. Also, to detect black marks, it is necessary to change the settings of the memory
switches.
3.
Cover Open Detection:
Detects that the printer cover (between head and platen) is closed.
4.
Stacker Paper Detector:
A reflective type photosensor is used to detect paper in the paper stacker.
5.
Near End Detection:
A reflective type photosensor detects the remaining amount of paper on the roll.
The following shows the detecting diameter and the amount of paper remaining
on the roll for each condition.
When Using Inner Diameter Ø 25.4/Outer Diameter Ø 40 Shaft Core Roll Paper
Detection Diameter (mm)
Residual Paper Amount (m)
Paper Thickness
(
µ
m)
Bottom
Level 1
Central
Value at
Ex-factory
Top Level
1
Bottom
Level 1
Central
Value at
Ex-factory
Top Level 1
80 Approx.
3.5
Approx.
7.5
Approx. 12.5
105
Approx.
Ø44
Approx. Ø48
Approx.
Ø52
Approx.
1.5
Approx.
4.5
Approx. 7.5
Note 1: The ex-factory setting is the central value.
Note 2: These dimensions are values calculated for sensor diameter and residual paper amounts, so there may be
some differences caused by the paper take-up state, paper thickness, the core specifications, the
mechanism and the print pattern.
Note 3: If the paper is thick (100
µ
m
≤
paper thickness
≤
150
µ
m) roll paper itself can become loose causing
erroneous detections. Therefore, set to top level one.
TSP1000 Series Product Specifications
2-10
