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Dip the head area of cartridge in hot water by 2 to 3 seconds two or three times and use tissue to check the color, if all three color comes out to tisssue paper, then it works else you have to replace the cartridge.
There should be some error .So you know how to remove the catridges just remove it n re insert it properly.If there are any paper jams try removing it also.and by the way if you haven't installed the drivers for HP deskjet this problem may arise.So make sure you ahve don this.Also this can be happened if the printer have some hardware problems.So none of this solutions are working its better to consult it with an expert.
I'm not sure what you mean by lines, but I had poor print quality and even a "ker-chunk" noise in the middle of the print head travel. On these HP printers, there is a strip of plastic with very small stripes printed on it that runs through the back of the print head. This is a linear encoder that lets the printer know the position of the print head. This gets dirty and the optical "eye" can't see the transitions of the lines on the strip. Clean it with some iso-alcohol and water and you should be all set to go.