Question about HP ScanJet 2400 Flatbed Scanner

2 Answers

The image has patchy lines

See the quality of the scanned image. The image has patchy lines. Can you suggest a solution? Or is it time to change my scanner?

Thanks,

Ramesh.

Posted by on

2 Answers

This type of problem is appearing plz give me the solution

don't tell that change the hardware part of the scanner

i now that problem may be the scanner bulb or tube

Posted on Mar 08, 2008

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  • 181 Answers

The scan image you have above could be caused by a few different issues but the number one is a power issue. Make sure that the printer is plugged in directly to the wall and not into a surge protector or a power strip. The printer does not share power well and pulls it in large amounts - when it can't get it it throws little power fits and sometimes will not turn on at all. Try another wall outlet and see if you can get it to power on and do a copy. Does the image look any better?

If this does not solve the issue then it may be that your scanner bulb is going and therefore not illuminating the image properly. Call hp and see if they have any upgrade units available - usually refurbished but they come with a 1 yr warranty and are significantly cheaper than buying a new unit from the store. They will also take your unit and pay to have it returned to go to an environmental recycling facility.

Posted on Feb 28, 2008

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Posted on Jan 02, 2017

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Tip

LPI, PPI,DPI conversions


Here is a conversion chart for DPI (Dots per inch) to LPI (Lines per inch) or PPI (Pixels per inch)

180 DPI................31 lines/inch or 68 PPI
360 DPI................63 lines/inch or 138 PPI
720 DPI................127 lines/inch or 280 PPI
1440 DPI..............255 lines/inch or 561 PPI
2880 DPI..................510 lines/inch or 1122 PPI

If you plan to enlarge your image, it is better to enlarge it when you're scanning rather than in your application. Each time you modify
an image, you lose some quality. Keep in mind when you enlarge a small photo, such as a 35 mm slide or wallet-size photo, you'll need
to scan at a high enough resolution to retain your image quality, but not so high that your file size is too large to be efficient. You must
manually adjust the resolution (dpi) to maintain the same image quality when you resize your image. For example, if you have a 300
dpi 2 x 2-inch image that you want to enlarge to 4 x 4 (a factor of 200%), increase the Scale setting to 200% or change the resolution to 600 dpi.

on Jul 19, 2008 | Epson Perfection V200 Flatbed Scanner

1 Answer

Xerox Documate 152 - Scan quality is now V.BAD!


I would go to Xerox.com and look up their knowledge base. Here is a copy of data from their site related to this problem:

Symptom: Scanned images have poor image quality, are fuzzy, unclear, or hard to read.
Cause: There are several things that can lead to poor image quality including the scan settings, dirt on the scanner, and driver problems. Solution: Note: If you scan as a PDF file and your scans look fuzzy when viewed in PaperPort, try right clicking on the file and selecting "Open" to open them in Adobe Reader. If they display fine in Adobe Reader then there is nothing wrong with the scans, it is simply that they are not being displayed well in PaperPort.

The following solutions can help resolve poor scan quality.

Solution 1 - Adjust the scan settings

Try increasing the resolution of your scan. 300 dpi to 400 dpi should be clear for most images
  • If you are scanning in Black and White, try Grayscale or Color. Some images will not display correctly in Black and White
  • You can also try adjusting the brightness and contrast
  • Note: For information on adjusting your scan settings, refer to the user guide for your scanner
Solution 2 - Clean and Calibrate the scanner

Note: Calibration only applies to sheetfed scanners.

Use the link below for instructions on cleaning and calibrating (if applicable) your scanner:
Solution 3 - Reinstall the scanner driver Select a link below for instructions on reinstalling your scanner driver:

Jul 08, 2009 | Xerox DocuMate 152 Pass-Through Scanner

1 Answer

Scanned image appears with lines going through it


it is possible, but first try cleaning the glass with a window cleaner and a soft cotton cloth and under the scanning options increase the quality to a higher setting and see if this helps at all. You may even benefit from purchasing a new scanner if this does not work as they a fairly resonably priced and will save you the hassle of repairing it.

Jan 15, 2009 | Umax Astra 1220S Flatbed Scanner

1 Answer

HP4400c Yielding Poor Image quality


I was having the same problem- dpi didn't have any effect.
Changing the SHARPEN to "High" and Descreen worked for me. My research showed the alternative fix was a new scanner, or at the very least a new bulb/power supply (which would probably cost more than a new scanner)

Dec 09, 2008 | HP Scanjet 4400c Flatbed Scanner

1 Answer

Poor scanned image quality


yes u can repair this try to remove the cover clean up the white tiles which reflect the image, also unscrew it and clean up the mirror and lens

Sep 08, 2008 | Microtek scanmaker 3840

8 Answers

Getting error code Code[ffff:0024]while scanning


while i am trying to scan the images .. i am getting the error code like Code[ffff:0024] while warming up the scanner, besides a sound from the scanner making it power off (light inside the scanner goes off ) so that i could not get scanned anything ... what will be the reason ? please suggest me the trouble shoot kaarthik

Apr 14, 2007 | Acer Scan to Web 3300U Flatbed Scanner

3 Answers

Scanner to Pc File Size and Volume Problems


Hello We have been having this same problem when scanning Black and White as well. We have just played around and have changed one of our settings that has seemed to solved the problem for now. Try Properties (on scan settings) then more then click on - Detect Page Size - Image Width instead of Guide Plates Hope this works for you to

Jan 18, 2007 | Canon DR-9080C Path-Through Scanner

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