rtridge Fult
DA nozzle is blocked or faulty and is not firing ink4drops.
DThe ink drops of one nozzle are of smaller volume than those of the other nozzles.
DA nozzle's ink drop volume varies while plotting.
DA nozzle's ink drops are misdirected:
DDefect in manufacture of cartridge.
DDirt or debris on the nozzle plate.
DInk puddling on the nozzle plate.
DAn electrical contact is misaligned or damaged on the cartridge, so that it doesn't make correct contact with the circuit on the carriage. (See ' page 4412, w arriage Test.)
Printer Fult
DIncorrect swath4advance angle of the drive roller. This could be caused by a:
DFaulty roller (irregular roller radius / defective bearings)
DMedia4axis inaccuracy (defective media motor or driver circuit / calibration lost)
DAn electrical contact is faulty in one of the Printer cartridge chutes, so that it doesn't make correct contact with the circuit on the cartridge. (See ' page 4412, w arriage Test.)
DNozzles touch the service station, thus causing puddling to occur on the print4head.
DSome of the small slots on the encoder strip are damaged. Therefore the Printer cannot position the carriage correctly during cartridge servicing.
DCartridges are misaligned with respect to each other.
DCalibration values lost or incorrect.
Medi Fult
Some types of media have a coating that prevents them getting •wet" from the ink drop. The ink doesn't spread out sufficiently around the point where the dot is placed.
Banding may not occur on some poor4quality media, where it is counteracted by another problem: large dot gain. This is where the ink spreads out excessively on the media around the desired dot position. To accurately test for banding, use HP polyester inkjet film.
Print Quality | HP DesignJet 430, 450C and 455CA Printers |