40UBI EasyCoder 301 Direct Protocol – Programmer's Guide Ed. 1Chapter 5 Feeding and Printing Commands1. Paper Feed,cont'd.By performing a TESTFEED operation after loading a new supplyof paper, the software is able to measure the distance between, forexample, the forward edges of two consecutive labels, thereby de-termining the label length, so that it can adjust the paper feed ac-cordingly. The same principle applies to tickets or tags with detec-tion gaps and to tickets with black marks.In the case of paper strip, the LSS will only detect an out-of-papercondition; the amount of paper feed is decided in two different ways:• Fixed length stripThe amount of paper fed for each FORMFEED, TESTFEED andPRINTFEED operation is decided by the Media Size: Lengthsetup.• Variable length stripAfter executing a PRINTFEED, the printer will stop feeding assoon as printing stops. Note that a blank space character or“white” part of an image is also regarded as a printable object. Theamount of paper fed by FORMFEED is decided by the Media Size:Length setup.The Detection setup allows you to perform two global adjustmentsto the paper feed described above:• Start Adjust• Stop AdjustBy default, both these parameters are set to 0, which allows forproper tear-off operation when there is no requirement of printingimmediately at the forward edge of the label (equivalent).• Start Adjust decides how much paper will be fed out or pulledback before the FORMFEED, TESTFEED or PRINTFEED isexecuted. There is a small distance between the dispenser shaft ortear off edge and the printhead. Thus, if you want to start printingdirectly at the forward edge of the label, you must pull back thepaper before printing by means of a negative start adjust value.• Stop Adjust decides how much more or less paper will be fed outafter the FORMFEED, TESTFEED or PRINTFEED is executed.Recommended Adjustments:Dispensing:Start Adjust : -88Stop Adjust: -48Tear Off:Start Adjust: -136Stop Adjust: 0Strip:Start Adjust: -136Stop Adjust: -60