Epson TM-L500A Technical Reference Guide: RFID - Page 48

Print density Selectable from levels 1 to 9 (70%  110%) (initial setting: level 7)  If the print density is set to a darker level, printing speed may be reduced.  If the print density is set to a darker level, paper dust accumulates on the print head and print may be faint. For information on how to clean the thermal head, see "Cleaning the Thermal Head" on page 59.  For good print quality, set the print density, depending on the original paper number. (See "Paper Specifications" on page 25.) Print speed Selectable from levels 1 to 10 (Slow  Fast) (initial setting: level 6)  Depending on print conditions, such as print duty, print head temperature, and data transmission speed, print speed is automatically adjusted, which may cause white lines due to intermittent print (the motor sometimes stops). To avoid this, keep the print speed constant by setting it lower, or set the transmission speed higher for the serial interface. (See "Transmission Speed (DIP Switches 3/4)" on page 38.)  For good print quality, set the print speed, depending on the original paper number. (See "Paper Specifications" on page 25.) User/Context mode • Single user/Single context (initial setting) • Single user/Multi context • Multi user/Multi context Buzzer volume Selectable from Off and levels 1 to 5 (initial setting: level 5) LCD backlight brightness Selectable from Off, Bright and Dim (initial setting: Bright) LCD contrast Selectable from levels 1 to 3 (initial setting: level 3) 48