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2.Image Quality Problems
669
With 2by2 or 4by4 halftone images, the density becomes uneven at the open gaps [A] on the
development unit and [B] on the drum cleaning unit.
Depending on whether the temperature rises or falls, the density of a certain part can become
higher or lower.
Differences in temperature and humidity between the open and closed spaces around the
circumference of the drum can cause fluctuations in the charge potential after exposure.
This problem tends to occur where humidity is low.
Solution
1. Is the absolute humidity above 2.6? (The absolute humidity in the lookup table below is calculated
from the temperature and relative humidity.)
Yes
Consult the product specialist.
No
Go to the next step.
2. Can the ambient temperature and humidity be adjusted?
Yes
Go to the next step.
No
Consult the product specialist.
3. Raise the temperature so that absolute humidity is above 2.6.
4. Adjust ambient conditions so that the work site is above 15°C (59°F) 30% rH.
5. Print the image. Is the problem resolved?
Yes
Finished.
No
Consult the product specialist.
Lookup Table for Calculating Absolute Humidity
Absolute humidity is calculated from ambient temperature and relative humidity based on the lookup
table below. The areas within the heavy red line in the table below indicate values where quality is
assured. To prevent uneven image density, absolute humidity should be above 2.6 within the red
shaded areas.
Содержание Pro 8300S
Страница 2: ......
Страница 8: ......
Страница 648: ...2 Image Quality Problems 640 cloth 3 If this does not solve the problem replace the paper transfer roller ...
Страница 653: ...2 Image Quality Problems 645 of paper Solution ...
Страница 654: ...2 Image Quality Problems 646 ...
Страница 726: ...3 Paper Delivery Problems 718 dust 4 Allow the rollers to dry completely before you re install them in the machine ...
Страница 740: ...3 Paper Delivery Problems 732 Flowchart for a folded corner correction ...
Страница 771: ...3 Paper Delivery Problems 763 Cleaning the Guide Plates Clean guide plates with a clean cloth dampened with alcohol ...
Страница 780: ...3 Paper Delivery Problems 772 Cleaning the Guide Plates Clean the guide plates with a clean cloth dampened with alcohol ...
Страница 808: ...4 Troubleshooting for Peripheral Units 800 Letter Fold in Letter Fold out Double Parallel Gate Fold ...
Страница 846: ...4 Troubleshooting for Peripheral Units 838 Solution ...
Страница 849: ...4 Troubleshooting for Peripheral Units 841 ...
Страница 858: ...5 Other Information 850 Adjustment of this setting can slightly increase the power consumption of the main machine ...
Страница 885: ...5 Other Information 877 Registration Unit Rollers View B Top ...
Страница 886: ...5 Other Information 878 Registration Unit Guide Plate View B Top ...
Страница 887: ...5 Other Information 879 PTR Unit General Layout No Name A Belt Cleaning Unit Bottom B PTR Unit C PTB Unit ...
Страница 888: ...5 Other Information 880 ITB Cleaning Unit Bottom ...
Страница 889: ...5 Other Information 881 PTR Unit ...
Страница 890: ...5 Other Information 882 PTB Unit ...
Страница 892: ...5 Other Information 884 Fusing Exit Guide Plate Lower ...
Страница 893: ...5 Other Information 885 Fusing Exit Guide Plate Upper ...
Страница 895: ...5 Other Information 887 Straight Through Exit 1 View A Top ...
Страница 896: ...5 Other Information 888 Straight Through Exit 2 View A Top ...
Страница 897: ...5 Other Information 889 Rollers View A Top Invert Exit View B Left ...
Страница 898: ...5 Other Information 890 Duplex 1 View A Top Duplex 2 View A Top ...
Страница 901: ...5 Other Information 893 ...
Страница 903: ...5 Other Information 895 Roller Position Vertical Transport Unit The arrow indicates the transport direction ...
Страница 904: ...5 Other Information 896 Rib Position Vertical Transport Unit ...
Страница 905: ...5 Other Information 897 ...
Страница 908: ...5 Other Information 900 Paper Transport Movable Guide Ribs and Rollers Left View ...
Страница 909: ...5 Other Information 901 Paper Transport Tray 5 Transport Fixed Guide Ribs Left View ...
Страница 911: ...5 Other Information 903 ...
Страница 912: ...5 Other Information 904 ...
Страница 913: ...5 Other Information 905 Vacuum Feed LCIT Transport Path General Layout T1 T2 ...
Страница 915: ...5 Other Information 907 Vertical Transport Right ...
Страница 916: ...5 Other Information 908 Vacuum Feed LCIT Bridge Unit No Name A Upper Side B Bottom Upper Side ...
Страница 925: ...5 Other Information 917 Driven Roller Drive Roller Rib Position ...
Страница 927: ...5 Other Information 919 Driven Roller Drive Roller Rib Position Driven Rib Drive Rib ...
Страница 931: ...5 Other Information 923 Driven Roller Drive Roller Rib Position Driven Rib Drive Rib ...
Страница 934: ...5 Other Information 926 Driven Roller Drive Roller Rib Position Driven Rib Drive Rib ...
Страница 937: ...5 Other Information 929 H Booklet Shift Roller I Fold Roller J Fold Exit Roller ...
Страница 939: ...5 Other Information 931 Booklet Upper Guide Plate Booklet Lower Guide Plate ...
Страница 940: ...5 Other Information 932 ...
Страница 954: ...5 Other Information 946 Junction Gate Proof Transport Path Transport Path Upper Side Driven Roller Position ...
Страница 958: ...5 Other Information 950 Drive Roller ...
Страница 960: ...5 Other Information 952 ...
Страница 962: ...5 Other Information 954 Horizontal Transport Path Bead Position ...
Страница 963: ...5 Other Information 955 ...