Feed paper on POS Printer C#

Question

I've been trying to programatically feed the paper on a pos printer (Epson TM-U220D). The problem I have is that the last line of the document don't get printed, instead, it is printed as the first line of the next document printed. I tried POS for .NET sending the "ESC|flF" command, also tried to send the raw esc/pos command using the serial port, but it doesn't work. Any ideas?

Solution

You will need sooner or later the full ESC/POS Application Programming Guide. I did obtained a copy from my EPSON dealer some years ago. In the meantime, I have found with Google a link to the FAQ for ESC/POS here: https://web.archive.org/web/20111229102746/http://postechgroup.com/updata/support/drivers/EPSON/FAQ_ESCPOS.pdf

In your case, the LF control command prints the data in the print buffer and feeds one line based on the current line spacing.

ASCII: LF

Hex: 0A

Decimal: 10

Comments

[alexandrul]

Please read the FAQ for ESC/POS, the correct command is Line Feed (hex 0A, decimal 10).

[bugmagnet]

I see your point, alexandrul. I took the original poster to be asking for a form feed, whereas he just says, "feed."

[JDibble]

In the Epson EScPOS dcoumentation there is GS V command that will feed and cut the paper at the correct point.

[alexandrul]

You are correct, but the original question didn't mention any space between last line of the receipt and the content of the next receipt. Also, the TM-U220D model doesn't have a cutter.

[JDibble]

You are correct about the lack of cutter on U220D - my mistake