HP PageWide XL 4700 User Guide 1 - Page 157

Object replication (ghosting)

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Scanner damages some originals HP is aware that this scanner may cause vertical scratches on inkjet originals on thick glossy paper. Very thin tracing paper or old originals may also be damaged. This is because CIS technology requires the original to be held down with high pressure to obtain accurate results and avoid blurring and defocus problems. If the original you intend to scan is valuable, and if it belongs to one of the types described above (inkjet-printed, thick, glossy original or old/thin/tracing paper original), HP recommends using a CCD scanner such as the HP DesignJet T1200 HD MFP. Object replication (ghosting) This error very rarely appears in CIS scanners. However, you can occasionally find image defects such as the following: original on the left, scanned image on the right. Image © www.convincingblack.com, reproduced with permission. Actions 1. Restart your printer. Then calibrate the scanner, as indicated in Calibrate the scanner (MFP only) on page 185, and repeat your scan. Turn the original 90° if possible before rescanning. 2. If the problem persists, analyze pattern 3, modules A through E, of the diagnostic plot. Call your service representative and report an "object replication" issue if you see the kind of error shown on the right. Clipping or incorrect scale factor when down-scaling in copies and prints When making copies or prints (from USB, Embedded Web Server, or printer driver), the scaling setting is available with various possible options. If you are experiencing problems related to border clipping, or it seems that your print has lost the scale-factor adjustment, read this section carefully in order to select the best value for the scaling setting in future jobs. ● Precise scaling: In this case, the content of the original image is scaled by the percentage factor that you have selected. For example, in an original CAD image with a 1:100 scale, if user selects scale to 50%, the printed plot will have an accurate scale of 1:200. Nevertheless, in the case of down-scalings when selecting ENWW Scanner troubleshooting 151

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Scanner damages some originals
HP is aware that this scanner may cause vertical scratches on inkjet originals on thick glossy paper. Very thin
tracing paper or old originals may also be damaged.
This is because CIS technology requires the original to be held down with high pressure to obtain accurate results
and avoid blurring and defocus problems.
If the original you intend to scan is valuable, and if it belongs to one of the types described above (inkjet-printed,
thick, glossy original or old/thin/tracing paper original), HP recommends using a CCD scanner such as the HP
DesignJet T1200 HD MFP.
Object replication (ghosting)
This error very rarely appears in CIS scanners.
However, you can occasionally find image defects such as the following: original on the left, scanned image on
the right.
Image © www.convincingblack.com, reproduced with permission.
Actions
1.
Restart your printer. Then calibrate the scanner, as indicated in
Calibrate the scanner (MFP only)
on page
185
, and repeat your scan. Turn the original 90° if possible before rescanning.
2.
If the problem persists, analyze pattern 3, modules A through E, of the diagnostic plot. Call your service
representative and report an “object replication“ issue if you see the kind of error shown on the right.
Clipping or incorrect scale factor when down-scaling in copies and prints
When making copies or prints (from USB, Embedded Web Server, or printer driver), the scaling setting is available
with various possible options.
If you are experiencing problems related to border clipping, or it seems that your print has lost the scale-factor
adjustment, read this section carefully in order to select the best value for the scaling setting in future jobs.
●
Precise scaling:
In this case, the content of the original image is scaled by the percentage factor that you
have selected. For example, in an original CAD image with a 1:100 scale, if user selects scale to 50%, the
printed plot will have an accurate scale of 1:200. Nevertheless, in the case of down-scalings when selecting
ENWW
Scanner troubleshooting
151