Wrong image on Ticket - horizontal white lines

[TillMoss]

When I print an image on ticket I get this result. How can I solve this?

[smalldevcloud]

With the image with smaller size you're gettin' the same result?

[TillMoss]

This result is on Epson TM-T20 III if I use another brand works correctly. The image on Epson is stretched. In fact if you look my uploaded image should be a square but the height is wrong

[KevinGong2013]

Printer has been rewrite.

select Mode to double width& double height

let receipt = Receipt(.🖨️58(.ascii))
<<~ .style(.initialize)
<<< Image(cgImage, mode: .doubleWH)
<<~ .page(.printAndFeed(lines: 1))

Image(cgImage, mode: .doubleWH) is key code.