Gray balance | HP 815MFP guide

gray balance

Gray Balance configuration offers the adjustment of gamma values for red, green, and blue. The purpose is to ensure a 100% neutral appearance of printed gray. To assist you in setting the Gray Balance values for your printer, you can print out a set of gray scales with varying combinations of gamma by pressing the Print Gray Balance Sheet button. With the resulting printout you can visually determine the most neutral scale, read the gamma values off the printout and enter these values in the Gray Balance settings. The Gray Balance Sheet is shown below:

The Gray Balance Sheet displays a matrix with the red setting on the bottom axis and the green setting on the left. A single element in the matrix is a row of shades, as they look at the given gamma values. The blue value is fixed to 1.0.

You select the best row of shades in the matrix and use the gamma values to make your settings in the dialog. Start out in the middle of the sheet (1.0, 1.0, 1.0), and step up/down or left/right. If you believe the best values lie between two patches, you are free to enter mid values like 1.1 instead of 1.0 or 1.2. In the example above, if the row that shows the best balance is the one encircled then you would set Gray Balance to red = 0.6, green = 0.8 and blue = 1.0 in the dialog.

If no satisfactory standard Gray Balance can be found, Advanced Gray Balance calibration is necessary.

98	hp designjet 815mfp & scanner 4200

Image 104

HP 815MFP manual Gray balance

Contents

User’s Reference Guide Legal notices Trademarks Contents Problem is with the scanner Problem is a software system errorProblem is what is printed Tell me about my scanner Tell me about media Tell me about copy and layout features and optionsTell me about hp designjet support Hp designjet 815mfp & scanner Problem is… Welcome to the hp designjet 815mfp/scannerHow do I…? Tell me about… To make copies… How do I make copies?Quick copying How do I set the printer media width? See also How do I select an original template?How do I set the input size? Hp designjet 815mfp & scanner How do I set the output size? How do I copy thick media? To copy thick media… How do I change the insertion slot height? How do I select a media profile? To change the insertion slot height… How do I set the output quality? How do I scale copies? To scale copies… How do I scan to a file? TipPage How do I use copy options and tools? How do I use the previewing tools? To move the image To position the paper frame How do I set the number of copies? To align the image How do I collate copies-create copy sets? Collate copy-copy sets How do I use nesting? How do I set up a print list? How do I use paneling? Setting up the print list How do I print from files? To print from files How do I maintain the print list? Page Cleaning the scan area How do I maintain/recover my system?Maintenance procedures Page Page Camera alignment and calibration Page To recover your scanner system… How do I upgrade the scanner firmware?How do I recover the system? How do I calibrate my touch screen? How do I shut down my system? How do I customize my copy tools? How do I define an original template? How do I create a custom scale size? How do I create a new media profile? To create a new media profile…Page How do I set up the system? How do I configure TCP/IP settings?To check your TCP/IP settings… How do I connect to a network?Page How do I create a workgroup? To create a workgroup… To log in automatically… How do I automatically log in in network configuration?How do I set the scanner system power up/down timer? To access the scanner setup options… How do I define scanner setup options?To set the scanner system power up/down timer… Paper load Media offset To create a new account… How do I create/delete/disable an account?Extended thickness settings To disable an account… To delete an account… How do I select/activate an existing account? To activate/select an existing account… How do I set preferences? Units of measurementLoading preferences Scan and user interface options How do I change the scanner system interface language? How do I set up my printer in my scanner system software?To set up your printer… Page Problem is the wait light is flashing Problem is with the scannerProblem is the diagnostics light is flashing Problem is the wait and diagnostics lights are flashing Problem is an error message and error code Problem is a software system errorProblem is no scanner was found Message Code Recommendation Press the button Problem is a printing error message Problem is a system failureTouch screen stops responding If your system does not work Problem is with the interface language Problem is with the touch screenIf you have problems pressing buttons on your screen If the user interface is not in the correct language Problem is white space with nesting Problem is what is printedProblem is a cropped image Power button and indicator light Diagnostics lightTell me about my scanner Tell me about my scanner operator panel and lights Paper forward and paper reverse keys Paper control areaWait light Paper ready light Tell me about scanner maintenanceAbout Why? When? Tell me about the scanner insertion slot Rgb mode Graytone modeTell me about scanner operating modes Modes 2d-sharpening, 2d-softening, and 2d-blur Usage Tell me about the hp designjet scanner software Main features of the scanner software are…Tell me about my scanner software Image control section provides the following tabs… Tell me about the scanner software user interfaceImage viewing section consists of… Entering numbers and names Tell me about the scan options Preview dpiScan speed Rewind paper Tell me about the user interface options LoadAuto-size method Limit auto-detect scan length Use quick select lists Color balancePaper lists show Use account password Print settingsEnable reprint Tell me about accounting Paper seriesActive account Total account Accounting criteria Accounting log files Tell me about WIDEsystem Page Tell me about copy and layout features and options Tell me about the copy sizeOverview Size options-relationships Tell me about original templates Input size/output size settingsUsing size presets Tell me about original template settings Templates for color copyingTemplates for black and white copying Method Black enhance and background clean LightnessSaturation Red, green, and blue Sharpen/blur Tell me about copy quality settings Scanning and printing quality settingsSetting the output margins Tell me about output margins Tell me about unprintable areas ‘account for unprintable area’ option Examples Tell me about scanner setup optionsExtended thickness paper handling Delay factor Paper loadingCorrection factor in scanning Manual/automatic Tell me about paneling and tiling options Options Assembling the panels Cut line Glue mark arrows Tell me about nesting Tell me about previewing and the paper frame Previewing Paper frame Hp designjet 815mfp & scanner Tell me about lists Creating and printing lists What to do before you call Tell me about hp designjet supportTell me about hp customer care Page Communication from HP to users includes Finally… Tell me about media Tell me about copying thick mediaMedia thickness positions Modifying stitching parameters Supporting thick originals Tell me about paper sizes Series Area Series Name Size Area Aspect Inches In² Mm² Ratio Tell me about calibrating RIP settings Ink level Gray balance Tell me about advanced gray balance Advanced gray balance 100 Hp designjet 815mfp & scanner Index Page