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HP Designjet T2300 HP Designjet T2300 eMFP Printer series - Image Quality Trou - Page 11

Lines are discontinuous, Lines are blurred - inks

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Print-quality issues To correct this kind of problem: 1. Reseat the printheads by removing them and then reinserting them. See Using your product. 2. Align the printheads. See Using your product. Lines are discontinuous If your lines are broken in the following way: 1. Check that you are using appropriate print-quality settings. See Using your product. 2. Reseat the printheads by removing them and then reinserting them. See Using your product. 3. Align the printheads. See Using your product. Lines are blurred Humidity can cause ink to soak into the paper, making the lines blurred and fuzzy. Try the following: 1. Check that your environmental conditions (temperature, humidity) are suitable for high-quality printing. See Using your product. 2. Check that the paper type selected in the front panel is the same as the paper type you are using. 3. Try changing to a heavier paper type, such as HP Heavyweight Coated Paper or HP Super Heavyweight Plus Matte Paper. 4. Select a paper type that is slightly thinner than the paper you have loaded; this will persuade the printer to use less ink. Here are some example paper types in ascending order of thickness: Plain Paper, Coated Paper, Heavyweight Coated Paper, Super Heavyweight Plus Matte Paper. ENWW Lines are discontinuous 7

Section	Page
Introduction	5
Most-common issues resolution	5
Troubleshooting print-quality issues	7
General advice	8
Horizontal lines across the image (banding)	8
Lines are too thick, too thin or missing	9
Lines appear stepped or jagged	9
Lines print double or in the wrong colors	10
Lines are discontinuous	11
Lines are blurred	11
Line lengths are inaccurate	12
The whole image is blurry or grainy	12
The paper is not flat	13
The print is scuffed or scratched	13
Ink marks on the paper	14
Horizontal smears on the front of coated paper	14
Ink marks on the back of the paper	15
Black ink comes off when you touch the print	15
Edges of objects are stepped or not sharp	15
Edges of objects are darker than expected	15
Horizontal lines at the end of a cut sheet print	15
Vertical lines of different colors	16
White spots on the print	16
Colors are inaccurate	16
Color accuracy using EPS or PDF images in page layout applications	17
Colors are fading	17
The image is incomplete (clipped at the bottom)	17
The image is clipped	18
Some objects are missing from the printed image	19
A PDF file is clipped or objects are missing	19
The Image Diagnostics Print	19
Corrective action	21
If you still have a problem	21
Troubleshooting scan-quality issues	22
Random vertical lines	23
Wrinkles or folds	23
Line discontinuities	24
Grain in area fills when scanning plain paper	25
Small color differences between adjacent CIS modules	26
Vertical light lines at the intersection between CIS modules	27
Variable line thickness or missing lines	28
Inaccurately reproduced colors	28
Color fringing	29
Clipping in dark or light areas	30
Flare in the image when scanning glossy originals	31
Vertical red and green bands over white or black background	31
The stop-start effect	32
Vibration	33
Horizontal periodical banding	33
Defocus, blurring and fading colors	34
Incorrect paper advance, skew during scanning, or horizontal wrinkles	35
Vertical black band 20 cm wide	36
The scanner damages some originals	37
Completely wrong colors	37
Vertical distortion	38
Object replication (ghosting)	38
Clipping or incorrect scale factor when down-scaling in copies and prints	39
Incorrect edge detection, mostly when scanning tracing paper	40
A copied or scanned image is very skewed	40
Scanner maintenance	41
Clean the scanner’s glass plate	42
Calibrate the scanner	43
The scanner diagnostic plot	45
Prepare the product and the paper to print the diagnostic sheet	46
Visual check for errors while printing the diagnostic sheet	46
Resolution	46
Alignment	47
Loss of shadow or highlight details	48
Printer banding	48
Streaks	49
Grain	49
Scan or copy the diagnostic plot	49
Monitor calibration	50
Save the diagnostic plot for future use	50

Match case Limit results 1 per page

To correct this kind of problem:

Reseat the printheads by removing them and then reinserting them. See

Using your product

Align the printheads. See

Using your product

Lines are discontinuous

If your lines are broken in the following way:

Check that you are using appropriate print-quality settings. See

Using your product

Reseat the printheads by removing them and then reinserting them. See

Using your product

Align the printheads. See

Using your product

Lines are blurred

Humidity can cause ink to soak into the paper, making the lines blurred and fuzzy. Try the following:

Check that your environmental conditions (temperature, humidity) are suitable for high-quality

printing. See

Using your product

Check that the paper type selected in the front panel is the same as the paper type you are using.

Try changing to a heavier paper type, such as HP Heavyweight Coated Paper or HP Super

Heavyweight Plus Matte Paper.

Select a paper type that is slightly thinner than the paper you have loaded; this will persuade the

printer to use less ink. Here are some example paper types in ascending order of thickness: Plain

Paper, Coated Paper, Heavyweight Coated Paper, Super Heavyweight Plus Matte Paper.

ENWW

Lines are discontinuous

Print-quality issues