Oki LE850DT LE840/LE850 Users Guide - Page 72

2.PRINTER SETUP 2.10 Threshold Setting 2.10 Threshold Setting To maintain a constant print position the printer uses the media sensor to detect a print start position according to the difference of voltage between a print area and a gap or black mark. When the media is pre-printed, the darker (or more dense) inks can interfere with this process causing paper jam errors. To get around this problem, first, try an automatic threshold setting. If the problem still occurs, then, the threshold voltage needs to be fine adjusted. Threshold is a voltage level by which the printer determines whether a print area or a gap/a black mark is being detected by the media sensor. The threshold is a boundary between a print area and a gap/black mark, and should be a midpoint of their voltage levels. Power OFF Power ON ONLINE Mode [PAUSE] PAUSE state Hold down [PAUSE] Threshold Setting Mode • Reflective sensor (Black mark sensor) • Transmissive sensor (Gap sensor) (1) Load the media to be used. (2) Choose 1) or 2) depending on the sensor type to be used, then press the [ENTER]. NOTES: 1. Failure to feed more than 1.5 labels may result in an incorrect threshold setting. 2. Ensure that a paper end or ribbon end error will not occur during paper feed. (3) Hold down the [PAUSE] until more than 1.5 labels (tags) have been fed. The media will continue to be fed until the [PAUSE] is released. (An automatic threshold setting for the selected sensor is completed by this operation.) (4) The result of the threshold setting is displayed. (e.g.: Succeeded) (e.g: Failed) Sensor type Result (Text) Result (Graph) Key operation guide E2-58