On Mon, 16 Oct 2006, Cauligi, Raghothama S wrote: > the front side is printed top to bottom. So, bottom margin on the front side > will be same as > top margin on the back side. This results in a disconcerting effect of the > top margin moving > up and down in a multiple page document.
Raghu, there is also an inherent *small* error in the inkjet duplexer units, which can be measured by the user and maybe hpijs could be configured to compensate for, by letting us add a fixed ammount of offset up/down in either the front or the back page, whichever is easier. E.g. my unit has an error of about +1 mm (back page starts 1mm futher down than what it should to be perfectly in sync with the front page). I suppose some other units might have an error of -1mm (back page starts 1mm up when compared with the front page), etc. HP even has a test pattern that makes it trivial to measure (i got a sheet with it printed when I got my duplexer unit) the vertical offset, and to see if there is any horizontal offset. Could support for such corrections be added to hpijs? It does NOT need to be a friendly thing at first with a calibration procedure or whatever, I'd be fine with it being an advanced capability which is up to the user to deal with for starters. Calibrating it would probably mean changing the default value in the CUPS PPD, as it is not something inside the printer. -- "One disk to rule them all, One disk to find them. One disk to bring them all and in the darkness grind them. In the Land of Redmond where the shadows lie." -- The Silicon Valley Tarot Henrique Holschuh ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ HPLIP-Help mailing list HPLIP-Help@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/hplip-help
