Zebra Z6M Especificaciones descargar pdf (Pagina 49)

77259L Rev. 4 12/16/03 Z4M/Z6M Maintenance Manual Page 2-23

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It is important that the appropriate media sensor is selected for the type media being used.

If the Transmissive Sensor is set to Auto Select mode and an auto-calibration condition

occurs (see media calibration), the appropriate media sensor will be selected. If Sensor

Select is set for Reflective Sensor or Transmissive Sensor, the auto-calibration will

calibrate the selected Media Sensor and ignore the other.

The trade-off between using Auto Select instead of the Reflective Sensor or Transmissive

Sensor is an increased time to print the first label. If the Sensor Select is set for Reflective

Sensor or Transmissive Sensor, the autocalibration will take longer to complete because it

is determining which media sensor to activate.

• Reflective sensor type media – Non-continuous (labels, notched tags) media

This type of media has some type of physical characteristic (notch, black mark, gap

between die-cut labels etc.) which indicates the start-of-label position. The reflective

sensor must be properly positioned to sense these indicators.

• Transmissive sensor type media – Pre-printer liners, thick and opaque liners or

dark adhesive sided media

This type of media requires the use of the transmissive sensor. The reflective sensor will

not properly calibrate with this type of media.

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The autocalibration of the Z4M/Z6M printer occurs at power-on and each time the printer

recovers from error conditions such as media errors, ribbon errors and printhead open

errors. When clearing an error, open and close the printhead and take the printer out of

pause. The printer will begin the autocalibration process if all errors have been cleared.

During autocalibration, the printer automatically determines the label length, media and

ribbon sensor settings. When non-continuous media is sensed, the calibration process is

followed by the label length calculation. Once the label length is determined, the media

feeds to the rest position and stops.

The results of this calibration are stored in the printer’s memory and retained even if

printer power is removed. These parameters remain in effect until the next calibration is

performed.

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The autocalibration process will not take place if the ZPL command or the front panel

setting for “Media Power Up” or “Head Close” is set to “no motion.” If set to “feed” the

printer will feed until the first sensed gap, notch or mark passes the tear off bar. In these

cases, the printer assumes the media is correctly positioned and starts printing without

calibrating.

As long as the printhead is closed, calibration may be performed. Calibration may clear

error conditions that prevent media movement. Unless an out-of-ribbon or out-of-media

condition exists, ribbon and media error conditions are cleared by calibration.

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Zebra Z6M Especificaciones Pagina 49