Question about HP LaserJet CP1518 Printer

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HP CP 1518ni the colors suddenly between one print and the next were out of alignment or phase with each other. printing the diagnostics page confirms this, top left side of page is pretty close bottom right is out by over a mm, of course everything is blurred

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  • Bob R Dec 08, 2012

    I think I confused the problem, this is a low volumn printer, less than 5k prints, and every thing is clean. have changed cartridges, changed paper, new package. it is the alignment of the colors with each other that is causing the problem, printing a diagnostics page with all the little lines and color patches. in the four corners there are right angle color lines to indicate alignment., on the top left they are nice and evenly spaced by the bottom right they are all overprinting each other with the blue the worst. in another test printing "0" with small typeface (10pt) and covering the page with them using a blended color that uses all the four drums. top left it is a single digit printed crisply. by the bottom right it is four distinct "0"s in each color. . not sure how else to explain what has happened, the 4 different drums (black, cyan, magenta, yellow ) are not hitting the right points on the paper with each other, cyan appears to be the most out of phase. as I said this occured between pages 2 and 3 in a four page photo printing session. first two pages crisp and sharp, last two shadow imaged. I have cleaned and recalibrated and reset to default all of the settings. recalibrated my software (not sure what that would help, but did it anyway) I suspected a small bit of paper or something in the gears but cannot find anything and cleaning has no effect. I have downloaded the disassembly manual from the web all 200+ pages of it. hope this clearifys the problem.

  • Bob R Dec 08, 2012

    ps it is out of warranty

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6 Suggested Answers

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  • 138 Answers

SOURCE: Hp 2300dtn Poor quality printing

Well lets start with DISREGARD ALL THE ABOVE BULL in the above brainless clarification request first noted. Here's a little good advice for you from a 14 year veteran printer tech.

Lets start with the cheapest and easiest moving to the more difficult or more expensive. Your problem can be caused by a few differnt things.

Print a configuration page (on the printer menu press check button, scroll to info menu, press check, scroll to print configuration, press check. Once you have the look for the page count on the page.

Try fresh good paper from a sealed ****. If your paper has picked up moisture this will show up as light or uneven print.

Next if the printer is over 100K page count, replace the transfer roller (foam roller inside printer under the toner cartridge). Lets try cleaning it first if your under 100K or to see if it improves at all. Any improvement will verify the transfer roller as bad. Review the photo below as it shows the transfer roller end inside the printer. The screwdriver is showing where the release white clips are (two). Press the tabs and lift the left side. The right will come out of the hole socket on its own but note where the hole on the right is for replacement. Try not handling the roller with your bare hands any more than you must as oil from your hands can cause slight imaging defects if your hands are sweaty or damp.

b1cf285.jpg
Using a clean rag (like t-shirt material) dampened (not soaking) with 99% alcohol (not 70%) lets clean the roller. Gently but firmly scrub the talc and paper dust buil-up from the roller. Once you've removed the build up it should return to a dark grey color. Let the 99% alcohol dry (5 minutes or so)and reinstall.

Try printing again. If the problem is solved your done. If not and it has improved, you will need a new transfer roller. They are available on Ebay much cheaper than from a dealer. The part number to search for is RM1-0343. Here's a link to ebay for one at around $20.00 landed.
http://cgi.ebay.com/LJ-2300-Transfer-Roller-New-OEM-RM1-0343-Unopened_W0QQitemZ270247145853QQcmdZViewItem?_trksid=p3286.m20.l1116

If the problem is the same, your problem is more than likely a dirty laser scanner lense. You'll need to remove the covers from the printer to accomplish this. The laser scanner can be located under the top cover. It's the larger black box on the top side of the printer. Once the scanner has been located, remove the top cover. DO NOT TOUCH THE MULTI SIDED SPINNING MIRROR TO THE REAR OF THE SCANNER. You will be cleaning the clear lenses and mirror towards the front. You clean this gently with a CLEAN and DRY Q-tip. Use a few Q-tips rather than re-applying a dirty one. Heck they are cheap!

Re-assemble the printer and try printing again. One of the steps above should resolve your issue. I am enclosing a link to a free service manual for your printer to help you through the disassembly and in the rare case that your issue remains.

http://www.feedroller.com/Store/Service%20Manual/LASERJET%202300%20Service%20Manual.pdf

Hope this helps you a lot more than the first response you receved. If so rate me with a FIXYA!

Thanks.




Posted on Oct 02, 2008

  • 7 Answers

SOURCE: not printing on left side of page

The problem is that the revolving drum doesn't contact the OPC drum proberly. You have to open the left side off the machine and replace the little white gear on the shaft that drive revolving drum. The gear has "jumped"one step and the revolving drum isn't parallell to the OPC drum. I fixed my 2840 last night it takes some time but now it works perfect.

Posted on May 27, 2009

  • 64 Answers

SOURCE: Hp 2820 prints only on right side of page

Yes, you will need to replace the drum unit as well. be sure to shop around so you can get the best price because some people mark up the price for that part. You can check the status of your supplies from the printer itself by pushing the "menu" button the printer and scrolling through until you see something about supplies status then press the check mark button.

Posted on Jul 31, 2009

  • 217 Answers

SOURCE: Smudge mark along entire right side of every page.

HP 1600 is quite a decent little printer, so you shouldn't be dissapointed - if it's working properly, which clearly it's not in this case.

It seems that you have 2 problems here.

Firstly it shouldn't click loudly, so you need to be talking to whoever you bought the printer from.

The smudging - is probably a dirty fuser.
There are laser printer cleaning sheets, that will work quite well, but ideally it needs a little bit of dismantling to get at the fuser to clean the two fuser rollers.

I've seen lots of these with dirty fusers, and a clean with IPA does the trick.

Posted on Apr 05, 2010

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  2. Select your product, and then click Properties . The printer Properties dialog box opens.
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Try using the HP Scan Diagnostic Utility in Windows - HP Customer Care (United States - English)

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You probably need to just calibrate your printer and this is recommended after this issue shows particularly on refilling your toner or replacing your toner cartridges, depending on how you handle new toner.

From HP::
Follow the steps listed below to calibrate your printer.
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  2. Press the Menu menu_button.gif button to enter the MENU on the control panel of the printer.

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  5. Press the Down arrow down.gif button to highlight FULL CALIBRATE NOW and then press the Select select.gif button.

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  2. Press the Menu menu_button.gif button to enter the MENU on the control panel of the printer.

  3. Press the Down arrow down.gif button to highlight DIAGNOSTICS.

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78ba9c0.gif

Now check that the alignment bars are correct as in the example below.

8294115.gif

All your colors and line alignments should now be correct. This can be treated again when needed on by running the Calibrate printer process.

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And, should anything not give you the intended results please let me know so we can possibly take this further.

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Hello,

You may want to run the alignment program again. Below are the steps as found on page 84 of the manual found here.

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