Epson TM-U220 ePOS-Print XML Users Manual - Page 79

Chapter 4 XML Reference Attribute value "gray16" Grayscale (16-step) Description Sample program Prints a 8 dots width and 8dots height raster image that is filled with solid color. //////////8= Supplementary explanation ❏ Grayscale printing is allowed in the standard mode, not allowed in the page mode. ❏ We cannot guarantee the accuracy of reading a barcode or 2D symbol printed in grayscale. Print it in black and white. ❏ In order to print a raster image at a high speed, set "align" to "left" and set "width" to a multiple of 8 which does not exceed the sheet width of the printer. ❏ In the page mode, set the print position of the image so that the image does not extend beyond the print area. ❏ If you set to print a raster image in grayscale, the amount of data of the image increases and may be printed intermittently, which causes white streaks on printout. ❏ In the page mode, the bottom left corner of the raster image is aligned with the start position for print- ing the image. The print start position is not automatically moved. ❏ Create a raster image using the ePOS-Print XML generation tool or your application. When using your application, follow the instruction below for 2 colors image or 16 colors image, whichever you want to create. Attribute value Black and white 16-step grayscale Description Set the image width to a multiple of 8, or pad the lacked bits with zeros. Set the image width to a multiple of 2, or pad the lacked bits with zeros. ❏ The "align" setting is ignored in the page mode. ❏ When setting "align" in the standard mode, set it at the beginning of a line. ❏ The "align" setting specified in this element is also applied to , , , and . 79