Thanks for the good accurate description of the 'band'/rectangle.
It sounds as if the printer is doing that rectangle deliberately, not just scraping off ink onto the envelope as I rather thought at first.
Here's another test to distinguish whether it is from the database, or is from some other cause:
1: print anything much, onto a blank envelope. Just one. Print from any application that prints text.
2: see if any sort of rectangle comes out on it.
- if not, then the Tap Forms db. is producing it somehow - deliberately.
- if so, then we have a clue that it is not just the Tap Forms db. producing it (as I suspect it is.)
Have you checked a Print Preview from the Tap Forms db.? the settings for printing in that program also?
There might be some sort of 'bar code data' setting in it, perhaps, e.g. when you print from it to an envelope, when you do envelope printing? without actual data input to it, the 'postal bar code' setting might perhaps produce a solid bar? but I am guessing at this point, for I do not know enough about Tap Forms to do more than guess.