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Problem with USB printer communication

 
DomenicoC
Occasional Contributor

‎01-12-2009 02:41 AM

‎01-12-2009 02:41 AM

Problem with USB printer communication

Hello, I am developing an embedded PCL driver using usb device controller ISP1161 .
I noted usb communication differences between HPP2014 and HP1320 printer. I analyzed the usb traffic and i found that the printer HPP2014 respond with multiple NAK while HP1320 not.
So, the HPP2014 takes more much time to print the same page. Why the 3014 printer acts in this way? Note that the HP1302 is usb 1.1 while the P2014 is usb 2.0. This means something?
Thanks you
Domenico
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