Oki S900 manual Halftone

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space required for saving line art images is only about 1/24 of that required to save 24-bit true color images.

*Pixel: A combination of two words: picture and element, a pixel is a single dot on a computer display or in a digital image.

HALFTONE

In addition to the black and white display, Halftone simulates greyscale by using different sizes of dots. When viewed at a distance, the image looks like a gray image yet it consumes much less disk space. Newspapers generally use halftone images. Since halftone is a type of black and white image, the disk space required is 1/24 of that required to save a 24-bit true color image.

USING THE S900 AS A SCANNER > 30

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Contents S900 Scancopier Preface Contents Cleaning the document glass Appendix D Setting up Page About this Guide Introduction Congratulations on your purchase of the S900 ScancopierScancopier Components Utilities and Documentation CD-ROM Contents Scancopier Overview Front ViewRear View Control PanelIntroduction LCD display 1, arrow keys 2 and setting buttons Indicator LEDs have the following meanings when illuminated Automatic Document Feeder ADF Components Using the S900 AS a Copier Std Paper Loading PaperPaper Size Auto Detection Alt PaperWhen Using the Optional ADF Placing a Document on the Glass FlatbedPlacing Documents in the ADF Using the Copy Features Changing Scaling Setting Paper Size Selecting Copy Mode Adjusting Print Density Scancopier is preset to the normal level of print densityIncreasing Copy Count Using the S900 AS a Scanner Using the S900 AS a Scanner Scan Method Selecting AN Image TypeBlack and White Line ART Halftone BIT Gray BIT ColorDetermining Your Resolution OCREnhancing Your Image BrightnessContrast Enlarging the Previewed Image Invert Image Mirror Auto Select ImagePaper Size Units DescreenColor Adjustment SharpenAuto Level Advanced Settings Highlight / ShadowCurves Color Balance Hue /Saturation /LightnessColor drop-out Custom Settings Miscellaneous Lock imageInformation Using the S900 with Unimessage PRO Maintenance Cleaning the Document GlassCleaning the ADF ADFMaintenance Replacing the ADF SNAP-IN PAD Module Maintenance Troubleshooting LCD MessagesLCD Information Codes Info code Meaning Action required Clearing a Paper JAM Specifications System overviewOptional Accessories Optional accessory Order codeAppendix a Quick Reference Guide Appendix a Quick Reference Guide Appendix B Setting UP a PIN ID and Print Control IntroductionConnection Arrangement Setting UP the Print Control Utility Setting the PIN IDPress the Additional Settings key Examples Administrator PC setting S900 Scancopier Operation Print Control UsageDescription See note Tray Multi Purpose Name User ID Setting usage S900 operation Restrictions Print Control ExampleAppendix C Updating the Printer Profile Appendix D Setting UP Resiting the ScancopierLocking the Scanning Head Precautions Unlocking the Scanning Head Shipping locked position Use unlocked positionInstalling the ADF Appendix D Setting UP Connecting the Cables Connecting the Power and Switching on Setting UP Additional Settings Appendix D Setting UP Appendix D Setting UP Selection Function Stapler Hole Punch Job Offset Alt Paper Installing Utilities from the CD-ROM For copying and/or scanning For copying and/or scanning and messagingAppendix D Setting UP OKI Europe Oki Systems Ireland LimitedRussia Bulgaria Index LCDUnlocking Scan head lock Unpacking S900 Scancopier