HP DeskJet 450 4800 1200 One Color(CMY) and/or one Black(K) or Photo (cmK) http://h20022.www2.hp.com/busprod/overview/0,12512,series=81913^type=18972^category=64173,00.html?lsidebarLayId=106&rsidebarLayId=63 MFG:hp;MDL:dj450;CMD:MLC,PCL,PML,DESKJET,DW-PCL,DYN;CLS:PRINTER;DES:hp dj450; hp dj450 hp dj450 MLC,PCL,PML,DESKJET,DW-PCL,DYN A hpijs Portable printer, currently the best portable on the market. The "ci" model comes without and the "cbi" with rechargeable battery. Connection via parallel port, USB, and fast infrared. Bluetooth optional The printer has a reader for Compact Flash memory cards, but no facility to choose the images to be printed. One needs a camera with DPOF (Digital Print Order Format) for PC-less photo printing. The best printout quality you will get with the "hpijs" driver, provided by <a href="http://hpinkjet.sourceforge.net/">HP</a> (compatible to the HP DeskJet 990C), especially the 1200-dpi high resolution mode gives excellent photo quality (the rendered bitmap is 1200x1200 dpi, but the printer hardware does an interpolation then and prints with the printer's highest resolution). Also the GIMP-Print driver is reported to work (Model setting: "pcl-900"). When used with HP's "hpijs" driver, this printer auto-detects the ink cartridge type and does appropriate dithering and colour adjustment internally, controlled by the hardware. So when GhostScript with the "hpijs" driver only renders the image with 300 or 600 dpi, higher resolutions are used for the internal dithering. So if you insert a photo cartridge, the printer automatically switches to the 6-ink process. Note that in contrary to most other current HP inkjet printers there is no paper type sensor in the printer. You have to choose one of the photo modes manually when using photo paper. There are photo modes with 300 and 600 dpi and a special high resolution photo mode where the image is rendered in 1200 dpi and interpolated to 4800x1200 dpi by the hardware. There is also no full-bleed mode as the other printers of the same generation (DeskJet 555x, OfficeJet 61xx, PSC 2xxx, PhotoSmart 7xxx) have, but the unprintable margins are smaller when using the photo/card/envelope feeder. There is also no automatic head alignment, but it is possible to do this manually with free software. Proceed as follows (head alignment is not needed when only one cartridge is installed): <ol> <li> Copy the needed files from the driver CD which comes with the printer: <pre> cp -a /mnt/cdrom/Drivers/DOS/europe/PCL . </pre> <li> Print the alignment page in raw (unfiltered) mode of your spooler (or send the file directly to the device). If you have the color (CMY) cartridge and the black (K) cartridge installed (4-ink mode) use <pre> lpr -l PCL/Align4.pcl </pre> and if you have the color (CMY) cartridge and the photo (cmK) cartridge installed (6-ink mode) use <pre> lpr -l PCL/Align6.pcl </pre> <li> Now look on the printed alignment page and choose the best matching pattern in each series, for example A5, B4, C4, and D2. <li> To align the heads appropriately, "print" the needed alignment commands in raw mode (or send them directly to the device). The correct commands are in files named "<tt>alignXYY.pcl</tt>". "<tt>X</tt>" has to be replaced by the number of inks and "<tt>YY</tt>" by the ID of the best pattern with the letter in lower case (Note that in some file names upper/lower case are not consistent, see the directory listing). So for the example above in 4-ink mode you have to run the commands: <pre> lpr -l PCL/align4a5.pcl lpr -l PCL/align4b4.pcl lpr -l PCL/align4c4.pcl lpr -l PCL/align4d2.pcl </pre> Now the heads are aligned. <li> Repeat this procedure whenever you change a cartridge. </ol> Up/downloading of photos between the PC and the printer/memory card works with the <a href="http://hpoj.sourceforge.net/">HPOJ</a> low level driver.