Many print quality problems are directly related to the kind of forms that are being used and the application that is being processed. If a particular form or application regularly produces unsatisfactory output, refer the application owner to the Forms Design Reference. This publication contains detailed information about selecting forms and designing applications for use with continuous forms printers.
The following table describes possible print quality problems and suggests actions that may correct the symptoms.
Table 1. Print quality symptom | Action |
Repeating spot patterns. | Clean the printer and the oiler belt. |
Print is too dark or characters appear too wide. | Refer to "Creating a Snapshot" in the Planning and Configuration Guide to adjust the contrast. |
In duplex printing mode there is a noticeable difference in the printing contrast between the front and back sides of the form, even though the Contrast Switch setting is set the same on both printers. | It is normal for printing contrast to varybetween printers. Adjust the contrast setting for both printers to balance the contrast between the printers. Refer to "Creating a Snapshot" in the Planning and Configuration Guide to adjust the contrast. |
Blank spots (voids) or light areas appear near perforations. | This problem is usually related to forms design, and it cannot be corrected by adjusting the printer.
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Loss of edge definition or lighter print contrast (boldness) at the trailing edge of bar codes, shaded or solid fill areas, or formatted bold text characters. | The problem can be reduced or eliminated by increasing the contrast. Remember to adjust the contrast setting on both printers to balance the contrast between the front and back of the forms. Refer to "Creating a Snapshot" in the Planning and Configuration Guide to adjust the contrast. |
Blank spots (voids) or light areas not near perforations. | ◎ Ensure that the forms are smooth and flat. Feel the forms, especially near the perforation. If you find lumps, bumps, or wrinkles, load another box of forms. This kind of problem can be caused by storing forms in a poor environment (for example, high humidity). |
Print has white streaks. | ◎ Clean the coronas. |
Print is too light. | ◎ Refer to "Creating a Snapshot" in the Planning and Configuration Guide to adjust the contrast. |
Print rubs off easily. | ◎ If print rubs off solid fill areas (logos, bar codes) on the form, lighten the contrast until fuse grade is acceptable. Remember to adjust the contrast setting on both printers to balance the contrast between the front and back of the forms. |
Print is offset (double images). | ◎ Use "Creating a Snapshot" in the Planning and Configuration Guide to adjust the fusing temperature and the amount of fuser oil used during printing. |
Print is not correctly registered. | ◎ Ensure that the print position is adjusted correctly. |
Dark background or dirty prints. | Clean the printer, particularly the coronas and the oiler belt. |
Dark streaks. | Clean the printer, particularly the coronas and the oiler belt. |
Dark or fuzzy 0.5-inch (12-mm) wide band across width of page (print bloom); characters appear bolder or slightly larger than normal. | This problem may occur at the point where pages stop in the fuser. The problem may also be application-related, and if so, cannot be corrected by adjusting the printer. |
Any other print quality problem or any of the above problems that persist after you have followed all of the corrective steps. | Call your service representative. |