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Rev. 2.00
- 133 -
SRP-275
8-3-2 Paper near end detection mechanism
Paper near end detection mechanism consists of
Switch-paper near end
and
Switch-paper near end-W
(using the wall mount). These switches detect the amount of paper left on the paper roll through OR logical
operation.
The
Switch-paper near end
consists of the paper near end detection lever and micro switch, and is located
on the left of the
Cover base
. The
Switch-paper near end-W
consists of the near end detection lever and
micro switch, and is located on the left of the
Cover middle
. These switches detect the amount of paper left
on the paper roll.
The tip of the paper near end detection lever is always pressed against the paper roll by a spring inside the
micro switch. Therefore, when there is a large amount of paper remaining on the roll, the paper near end
detection lever is pressed against the paper roll as figure.
This keeps the micro switch turned on. When the almost out of paper on the roll the tip of the paper near end
detection lever is no longer pressed against the paper roll and moves in the direction indicated by the arrow
A. This turns the micro switch off and generates a signal indicating that the paper roll is near its end.
Switch-paper end
Switch-paper near end
Switch-paper near end-W
Switch-cover rear open
Cover base
Cover middle
Frame basket
Roll paper
Frame basket
Cover base
Cover middle
Switch-paper near end
Switch-paper near end-W
Switch-cover rear open
Paper inside core
A
B
C
A
Содержание 2 COLOR THERMAL PRINTER SRP-275
Страница 1: ...Service Manual SRP 275 Impact Printer Rev 2 00 http www samsungminiprinters com ...
Страница 52: ...Rev 2 00 52 SRP 275 Bottom view ...
Страница 63: ...Rev 2 00 63 SRP 275 4 4 8 Ethernet Interface IFC E TYPE ...
Страница 65: ...Rev 2 00 65 SRP 275 4 5 Schematic Diagram 4 5 1 Main Circuit Diagram ...
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Страница 74: ...Rev 2 00 74 SRP 275 4 5 2 Head circuit diagram ...
Страница 75: ...Rev 2 00 75 SRP 275 4 5 3 Serial Interface Diagram RS 232C ...
Страница 76: ...Rev 2 00 76 SRP 275 4 5 4 Parallel Interface Diagram IEEE 1284 ...
Страница 77: ...Rev 2 00 77 SRP 275 4 5 5 USB Interface Diagram Universal Serial Bus ...