HP Designjet T2300 HP Designjet T2300 eMFP Printer series - Image Quality Trou - Page 25

Grain in area fills when scanning plain paper - scanner problems

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damaged before calibrating the scanner (an old or damaged maintenance sheet may cause this problem); if it is damaged, call HP support and ask for a new maintenance sheet. 4. If the problem persists, proceed to analyze the following areas of the diagnostic plot: a. 4 (from module A to E). b. 10, at the intersection between modules. c. 13 in modules A and E, and 14 in modules B, C, and D. If you see any of these defects in the studied areas, call HP support and report a "line discontinuities" error after calibration. Scan-quality issues The four vertical thin black lines at the beginning and the end of the diagnostic plot show, approximately, the position of the intersection between CIS modules, where this kind of error usually appears. If the error appears outside these areas, call HP support and report "line discontinuities within a CIS module". Grain in area fills when scanning plain paper When making copies of an original containing area fills, if the paper used in the printer is plain paper (for instance, HP Universal Bond or HP Bright White Inkjet Bond), some grain may appear in the image. This error may also appear in scanned files of originals that were printed on textured paper. The example below shows the original image on the left and the scanned, grainy image on the right. Actions 1. Please look at the original and check if it is dirty, has fingerprints on it or if the grain is already present in the print. If not, then proceed to step 2. 2. Repeat the scan/copy, setting the content type to Image. ENWW Grain in area fills when scanning plain paper 21

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damaged before calibrating the scanner (an old or damaged maintenance sheet may cause this
problem); if it is damaged, call HP support and ask for a new maintenance sheet.
4.
If the problem persists, proceed to analyze the following areas of the diagnostic plot:
a.
4 (from module A to E).
b.
10, at the intersection between modules.
c.
13 in modules A and E, and 14 in modules B, C, and D.
If you see any of these defects in the studied areas, call HP support and report a “line
discontinuities” error after calibration.
The four vertical thin black lines at the beginning and the end of the diagnostic plot show,
approximately, the position of the intersection between CIS modules, where this kind of error usually
appears. If the error appears outside these areas, call HP support and report “line discontinuities within
a CIS module”.
Grain in area fills when scanning plain paper
When making copies of an original containing area fills, if the paper used in the printer is plain paper
(for instance, HP Universal Bond or HP Bright White Inkjet Bond), some grain may appear in the image.
This error may also appear in scanned files of originals that were printed on textured paper. The
example below shows the original image on the left and the scanned, grainy image on the right.
Actions
1.
Please look at the original and check if it is dirty, has fingerprints on it or if the grain is already
present in the print. If not, then proceed to step 2.
2.
Repeat the scan/copy, setting the content type to
Image
.
ENWW
Grain in area fills when scanning plain paper
21
Scan-quality issues