Star Micronics TUP900 User Manual download pdf (Page 36)

Rev 0.01

TUP900 Series Specifications Manual

8-8

8-5 Adjusting the Near End Sensor

It is necessary to adjust the near end sensor to detect the remaining amount of paper roll. To adjust the

position of the near end sensor, adjust the roll diameter direction that determines the adjustment of the

paper width to correspond to the paper roll width and the amount to detect of that paper.

See the adjustment method for each below to use this at the correct position.

8-5-1 Adjusting to the Paper roll Width

Fig. 8.5.1 A and Fig. 8.5.1 B show the method for width direction adjustment for the near end sensor.

Loosen the screws fastening the near end sensor in the width direction with the paper roll you intend to use

mounted in the printer unit.

Move the near end sensor holder (plastic part) toward the paper roll edge (moving in the direction of the

arrow shown in Fig. 8.5.1 B) to make the paper roll edge and near end sensor holder edge close together.

In this state, move the near end sensor holder again in the opposite direction one or two clicks. At this time,

the distance between the paper roll edge and the near end sensor edge should be 1.5 mm to 2.0 mm.

Notes 1)To use the near end sensor under more optimum conditions, it is necessary to adjust the sensor

sensitivity. Refer to the sensor adjustment method described on the section 6-4 of the separate

TBD900 Specifications Manual to adjust the sensitivity.

Also, if the detection diameter of the roll sheet by the near end sensor is unstable, adjust the

sensitivity of the near end sensor.

2) The near end sensor is adjusted to the position corresponding to paper width of 111.5 ±0.5 mm

when the printer is shipped from the factory.

3) Use the memory switches to set the near end sensor on or off.

4) The adjustment for the near end sensor in the width direction on the optional high volume paper

roll supply (RHU-T900) is the same.

8-5-2 Adjusting to the Paper roll Diameter Direction

(1) Printer Unit

See Fig. 8.5.2 A to make adjustments on the near end sensor in the paper roll diameter direction.

To adjust the position of the near end sensor, the diameter direction fastening screws must be

loosened. After loosening the fastening screws, adjust the near end sensor to the appropriate position

for use. At that time, adjust the central position of the notch on the near end sensor with the references

shown in Fig. 8.5.2 A.

Also, it is possible to set to the user's preferred amount of paper roll to detect, so adjust to the most

optimum position while checking operations.

This printer unit handles paper roll of paper core inner diameter of φ25.4 (1 inch), inner diameter of

φ50.8 (2 inches) and φ76.2 (3 inches), but to use each paper roll holder, it is recommended to position

the near end sensor to the reference positions shown in the table below to use this apparatus.

Paper roll Holder Types

Corresponding References

(Adjustment Position)

Paper roll Holder (1) Reference a

Paper roll Holder (2) Reference b

Paper roll Holder (3) Reference c

Note 1) The near end sensor is assembled to reference position 'a' when shipped from the factory.

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Star Micronics TUP900 User Manual Page 36

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