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Published 20 hours ago • verified publisher icon star-micronics

[BUG] Inconsistency in printed receipts

Open arnolddrita opened this issue 1 year ago • 1 comments

Description

We have tested our code across a range of star printers and it all looks exactly the same. We are printing receipts by generating an in-memory bitmap of the whole receipt file and printing it using appendBitmap

We've tested 3-4 different printers, on starGraphic and escPosMobile emulation modes (not sure if helpful), on Bluetooth, ethernet, wifi, and USB interfaces, and the printed image receipts look exactly the same (picture 1).

However, we're having issues with MCP31LB. The same iPad, connected to a TSP100, SM-T300 and an mC-Print3, printed the same receipt on all three. The first two, printed it exactly as picture 1, while the second consistently adds glitches to the image. Sometimes, just some sections of the image, appear centered. Other times, garbage is printed instead of the word (see the Restaurant word in the header).

Not sure how to investigate this issue or what tests to perform to debug it. We are on the latest SDK version and latest iOS version.

Your printer

  • Model Names: mC-Print3 MCP31LB

Screenshots

correct_image

bad_image

arnolddrita avatar Jul 20 '22 16:07 arnolddrita