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Ghosting is an issue which varies from Reader to Reader. The elements are made in bacthes and have a corresponding batch number called a LUT (Look Up Table) file. They determine the refresh rate of the element ... unfortunately now and again some Readers don't refresh as well as they should causing your anomaly. The only solution I have come across is to load an alternative LUT file into the EEPROM - but this needs to be done a Sony Service Centre I'm afraid (unless you know a Sony chappie that has access to the files and the knowledge to do it!?).
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