HP Designjet T790 HP Designjet T790 and T1300 ePrinter: User's Guide - English - Page 165
Lines are too thick, too thin or missing, Lines appear stepped or jagged, Maximum detail
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Print-quality issues Lines are too thick, too thin or missing 1. Check that the paper type you have loaded corresponds to the paper type selected in the front panel and in your software. See View information about the paper on page 43. 2. Check that you are using appropriate print-quality settings for your purposes (see Printing on page 49). Select the custom print-quality options in the driver 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 the HP-GL/2 and HP RTL 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 167. 5. If the problem remains, go to the front panel and press and then to see the printhead alignment status. If the status is PENDING, you should align the printheads. See Align the printheads on page 175. After alignment, you may wish to reprint your job in case the problem has been solved. 6. Go to the front panel and press and then 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 150. 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: ENWW Lines are too thick, too thin or missing 157