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- * What is this?
-
- PXLJR (http://sourceforge.net/projects/hp-pxl-jetready/) is an IJS-based
- driver for the HP JetReady 4.x protocol printer family (Color Laserjet
- 3500 and 3550) under linux and other unix-like systems. This effort is
- not endorsed by nor affiliated with HP.
-
- It is licensed under the terms of GNU General Public License.
-
- * Compiling and Run-time requirements?
-
- About the same as HPIJS. PXLJR needs a C compiler rather than a C++
- compiler, and also need automake/autoconf (this may be improved in
- later release).
-
- * HPIJS/HPLIP also supports these two printers. Why are you
- "reinventing the wheel"?
-
- HPIJS (http://hpinkjet.sourceforge.net) provides 2 printing modes: one
- color and one gray, corresponding to the max-compression/worst-quality
- setting of the HP driver under Windows. There are two more settings for
- better quality in the Windows driver. PXLJR provides these two
- additional settings, so there are a total of 6 printing modes. Also, the
- max-compression gray mode of PXLJR is 1.5 to 3 times faster.
-
- One the other hand, PXLJR doesn't provide a full set of facilities like
- printer status report, etc. For other bells and whistles, please use
- HPLIP's toolbox instead. There is no conflict installing both HPIJS and
- PXLJR simultaneously.
-
- * Why did you not improve HPIJS instead?
-
- There are professional reasons that I need to maintain autonomy; on the
- other hand, the two addtional quality settings are already in the
- Windows driver. The HPIJS people can consult their Windows driver people
- and there is no need for me to contribute; the other improvement - the
- speed for the gray modes - would require substantial modification, and
- affects and changes code paths that I cannot test due to not have the
- other printers.
-
- * Any other improvement I can do to my prints?
-
- There is a file 'gs-gamma.ps' which changes the gamma curve and boasts
- the shadow details if one prepends it to a print-job.
-
- * Known problems, Limitations?
-
- The right-hand border for PXLJR is about 0.5mm wider than HPIJS. I haven
- not been able to track it down, but the difference is only noticeable if
- one prints all the way to the edge of the printerable area, and compare
- side-by-side.
-
- Standard page size (A4, letter, envelope, etc) works, but custom
- arbitrary size only works on 32-bit small endian. (i.e. x86). HPIJS has
- a similiar and worse problem - and both will be resolved in the
- corresponding next releases.
- "make install" installs too many unnecessary things, and does not
- install the ppd. Only really only need
- to copy the ijs_pxljr into /usr/bin and the ppd into a CUPS specific place.
-
- * Upcoming improvements?
-
- Making dependence on libjpeg optional.
- Make Multiple-copies option work. Currently if one wants X identical
- copies, one needs to send job X times.
- Make the gamme curve change a more user-friendly option.
- See if a 1-bit B/W version can go even faster.
-