> I also link it with libusb 0.1.12 and other things.

If you are using hpijs only, no printer status or bi-di communication.
Then with configure option --enable-hpijs-only-build, you shouldn't need
libusb. 

> - sometimes (never the first time after power up) the Job is 
> created but the construction_error = SYSTEM_ERROR. It seems 
> that the printer is not responding and HPIJS times out. 
> Retrying works and printing can continue.

Not sure what this error is. If you use hpijs-only-build, then you
shouldn't get this error. 

> - sometimes HPIJS hangs on what seems like the last pass 
> (bottom) of the raster. Sometimes it does not hang and 
> NewPage() ejects the page but the bottom of the raster is 
> incomplete (unfinished part of a line)

This error sounds like you are closing usb io down before all the data
has be received by the printer.

-dave 

> -----Original Message-----
> From: [EMAIL PROTECTED] 
> [mailto:[EMAIL PROTECTED] On Behalf 
> Of Martin Kajdas
> Sent: Tuesday, August 28, 2007 10:15 AM
> To: hplip-devel@lists.sourceforge.net
> Subject: [HPLIP-Devel] Print errors and hangs using HPIJS 
> with HP DJ4160
> 
> Hello,
> I am developing an embedded Linux application that uses HP 
> DJ4160 printer. (no desktop, no HPLIP, no CUPS, no lp, no 
> spooling) I am using HPIJS code from HPLIP 2.7.7 as is, which 
> I compile and create a static library and link with my application.
> I also link it with libusb 0.1.12 and other things.
> Basically, the printing works, I create a job, send some 
> rasters and close job.
> 
> The problem is that:
> - sometimes (never the first time after power up) the Job is 
> created but the construction_error = SYSTEM_ERROR. It seems 
> that the printer is not responding and HPIJS times out. 
> Retrying works and printing can continue.
> - sometimes HPIJS hangs on what seems like the last pass 
> (bottom) of the raster. Sometimes it does not hang and 
> NewPage() ejects the page but the bottom of the raster is 
> incomplete (unfinished part of a line)
> 
> Does anyone has any idea what to try, what to report 
> (additional info?), how to fix it or have seen it before?
> 
> I think this is some kind of HPIJS driver problem that needs 
> to be resolved.
> 
> 
> I used to have other problems (i.e. blinking panel lights) 
> that were fixed in this version however I was able to cause 
> it once with this version also but I cannot easily reproduce it.
> Above problems occur regularily and I can provide debugging 
> info if requested.
> 
> Thank you,
> Martin
> 
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