IBM 4230 User Guide - Page 92

Adjusting the Print Quality After the printer prints a few lines, press Stop and verify that the print quality is satisfactory. Good print quality includes: Clear, legible print Satisfactory darkness or lightness of output. It is up to you to decide if the print quality is satisfactory. Adjustments you can make that affect print quality include: Tractor Tension Incorrect tension on the right tractor can cause the paper holes on the forms to tear, wrinkle, or jam in the printer. To adjust the tractor tension, see "Adjusting the Tractor Tension" on page 1-71. Forms Thickness Setting This setting can affect the darkness or lightness of output. The printer will normally sense the forms thickness and adjust itself automatically. However, if this setting is not correct, it can be adjusted. To adjust the forms thickness, see "Adjusting the Forms Thickness Setting" on page 1-73. Note: The Automatic Forms Thickness Adjustment (AFTA) mechanism automatically measures the forms thickness and adjusts the gap from the print head to the platen rod based on the measured value. See "Automatic Forms Thickness Adjustment (AFTA)" on page 3-8 for information on how the 4230 Printer sets the forms thickness. Left Margin and Top of Form Position The adjustment of the first print position can affect the appearance of the output, especially if you are using preprinted forms. To adjust the position of the first print character, see "Adjusting the Left Margin" on page 1-75. To adjust the position of the first print line, see "Adjusting the Top of Form Position" on page 1-77. 1-70 User's Guide