HP Designjet T620 HP Designjet T620 Printer Series - Users Guide - Page 127
Lines are too thick, too thin or missing, Lines appear stepped or jagged
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Lines are too thick, too thin or missing Print-quality issues 1. Check that the paper type you have loaded corresponds to the paper type selected in the front panel and in your software. To check on the front panel, use the View loaded paper key . 2. Check that you are using appropriate print-quality settings for your purposes (see Printing on page 45). Select the custom print-quality options in the driver dialog (Mac OS Print dialog), and try turning on the Maximum detail option (if available). You may wish to reprint your job at this point in case the problem has been solved. 3. If the resolution of your image is greater than the printing resolution, you may notice a loss of line quality. If you are using the PCL or HP-GL/2 driver for Windows, you can find the Max. Application Resolution option in the driver dialog's Advanced tab, under Document Options > Printer Features. If you change this option, you may wish to reprint your job at this point in case the problem has been solved. 4. If lines are too thin or missing, print the Image Diagnostics Print. See The Image Diagnostics Print on page 133. 5. If the problem remains, go to the front panel and select the Ink menu icon , then Printhead information to see the printhead alignment status. If the status is PENDING, you should align the printheads. See Align the printheads on page 142. After alignment, you may wish to reprint your job in case the problem has been solved. 6. Go to the front panel and press the View loaded paper key to see the paper advance calibration status. If the status is DEFAULT, you should perform paper advance calibration: see Recalibrate the paper advance on page 119. If the problem persists despite all the above actions, contact your customer service representative for further support. Lines appear stepped or jagged If lines in your image appear stepped or jagged when printed: 1. The problem may be inherent in the image. Try to improve the image with the application you are using to edit it. 2. Check that you are using appropriate print-quality settings. See Printing on page 45. 124 Chapter 13 Troubleshooting print-quality issues ENWW