If a printable message is sent to a printer that uses rasters, the message is converted into a bitmap before it can be printed. The width of this bitmap is set through this command. If a message is sent that exceeds this width, the conversion of the message is aborted and an error will be reported (the rest of the message is not printed). If the aperture is made too big (close to the product pitch), the printer may not get enough time for phasing. If the aperture exceeds the product pitch, messages will be skipped. Therefore it is essential that the aperture is set big enough to ensure that all the messages fit, but not bigger than that.
For FreeForm printers, the aperture is only used when the message is printed in reverse. If the message is shorter than the aperture, the remaining space is filled with blank characters. This allows for proper left hand justification when a label is printed with multiple print heads.
If a printable message is sent to a printer that uses rasters, the message is converted into a bitmap before it can be printed. The width of this bitmap is set through this command. If a message is sent that exceeds this width, the conversion of the message is aborted and an error will be reported (the rest of the message is not printed). If the aperture is made too big (close to the product pitch), the printer may not get enough time for phasing. If the aperture exceeds the product pitch, messages will be skipped. Therefore it is essential that the aperture is set big enough to ensure that all the messages fit, but not bigger than that.
For FreeForm printers, the aperture is only used when the message is printed in reverse. If the message is shorter than the aperture, the remaining space is filled with blank characters. This allows for proper left hand justification when a label is printed with multiple print heads.
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