Toshiba 5520c, 6520c 2.8 To Eliminate Moir

e-STUDIO5520C/6520C/6530C © 2008 TOSHIBA TEC CORPORATION All rights reserved

2-37

2. Copier-specific Adjustments

2.8 To Eliminate Moiré

Before the adjustment After the adjustment

Moiré occurs on the photo image. Moiré is eliminated and a clear copy image is

obtained.

 Explanation

When an original containing photo images or gradational images (halftones) is copied, moiré sometimes occurs

on the copy. Perform adjustment regarding image processing (sharpness intensity), in order to obtain a clear

copy image, while eliminating moiré.

 Procedures

* You can start with any of the procedures. But it is recommended to perform the procedures in order, as listed

below. You can use one procedure in conjunction with another. But if this changes the image quality more

than required or loses the effectiveness of the adjustment, restore the settings made in the previously used

procedure to the original ones. Then use other procedures.

* Both the service technician and the user can use procedures (1) and (2).

* Only the service technician must use procedure (3).

Contents

Main Page Revision Record Page Purpose of the Imaging Manual Precautions in Servicing Page Table of Contents 1. General Adjustments Copying, Printing and e-Filing (Output from Box) 2. Copier-specific Adjustments 3. Printer-specific Adjustments 4. e-Filing-specific Adjustments 5. Scanning-specific Adjustments Page Page Page Page Page 1.2 To Adjust the Density on a Solid Colored Image Page Page Page Page 1.3 To Achieve the Image Quality Most Suitable for the Paper Used (To eliminate blur and graininess from an image) Page Page Page Page 1.4 To Minimize Variations in the Image Quality under the Operating Conditions (To optimally program image quality control) Page Page Page Page Page 1.5 To Correct Out-of-Registration Colors Page Page Page 2. Copier-specific Adjustments 2.1 To Copy Text Clearly 2.1.1 To Adjust the Copy Image Quality in the Black Mode Page Page Page 2.1.2 To Adjust the Copy Image Quality in the Full Color Mode Page Page 2.1.3 To Adjust the Copy Image Quality in the Auto Color Mode Page Page 2.2 To Closely Match the Color Balance of the Original Page Page Page 2.3 To Improve the Reproducibility of Gray Page 2.4 To Copy in Vivid Colors Page Page Page 2.5 To Make the Pale Area of the Original Look Darker and Sharper (To improve the highlight reproducibility) Page Page 2.6 To Eliminate the Background Color 2.6.1 To Adjust the Copy Image Quality in the Black Mode Page 2.6.2 To Adjust the Copy Image Quality in the Full Color Mode Page Page 2.7 To Avoid Copying the Image Seen through the Back of a Page Printed on Thin Paper 2.7.1 To Adjust the Copy Image Quality in the Black Mode Page Page 2.7.2 To Adjust the Copy Image Quality in the Full Color Mode Page 2.8 To Eliminate Moir Page Page Page 2.9 To Copy Sharply (To enhance sharpness) Page Page 2.10 To Make Photo Edges Look Softer Page Page Page Page 2.11 To Make Solid Filled Bold Text (Logo) Highly Colored 2.11.1 To Adjust the Copy Image Quality of a Black Logo Page 2.11.2 To Adjust the Copy Image Quality of a Colored Logo Page 2.12 To Sharply Contrast the Hues of Highlighters on the Copy Page Page 2.13 To Obtain a Good Color Balance on Thick Paper Page Page Page 2.14 To Obtain Smooth Gray-Scale Photo Images Page 2.15 To Change the Threshold in Auto Color Mode (To change the threshold between the Full Color mode and the Black mode to meet the user s needs) Page Page 2.16 To Adjust the Twin-Color Copy Image Quality 2.16.1 To Adjust the Tint of Colors other than Black 2.16.2 To Adjust the Reproducibility of Black in the Red and Black Mode 2.16.3 To Adjust the Boundary between Black and Colors other than Black 2.17 To Adjust the Image Quality Scanned from the RADF Page Page 2.18 To Program Frequently Used Copy Settings (To Use Custom Mode) 2.18.1 To Adjust Custom Mode Settings in Black Mode Page Page Page Page 2.18.2 To Adjust Custom Mode Settings in Color Mode Page Page Page 2.19 To Copy While Erasing Shadow Outside of Image 2.20 To Avoid Copying Blank Page of Original Scanned with RADF Page 2.21 To Obtain Image in Even Density Level Page 3. Printer-specific Adjustments Restrictions on Use of Printer Functions 3.1 To Maintain a Steady Color Balance Page 3.2 To Maintain a Steady Color Balance on Thick Paper or Special Paper Page 3.3 To Obtain the Desired Color Balance Page Page Page Page Page Page Page 3.4 To Closely Match the Color Balance on the Monitor Page Page 3.5 To Maintain a Uniform Gray Hue (To maintain Consistency in Gray among Text, Photos and Graphics) Page Page 3.6 To Use Only the Black Toner to Reproduce Gray Areas (To use only the black toner to reproduce black-and-white photos or gradational images) Page Page Page 3.7 To Easily Adjust the Overall Brightness Page Page 3.8 To Adjust the Overall Saturation Page Page Page 3.9 To Easily Adjust the Overall Contrast Page Page 3.10 To Obtain a Sharper Print Image Page Page 3.11 To Obtain a Softer Image Page Page 3.12 To Make Low-resolution Data Look Finer Page Page 3.13 To Eliminate Smudges from Highly Colored Text and Lines (To prevent toner scattering around text and lines where a large amount of toner is used) Page Page Page 3.14 To Clearly Print Light-Colored Thin Lines or Text 3.14.1 To Adjust the Print Image Quality in the Color Mode Page Page Page Page Page Page Page 3.14.2 To Adjust the Print Image Quality in the Black and White Mode Page Page Page 3.15 To Make the Light-Colored Area Darker on the Printout Page Page Page Page Page 3.16 To Clearly Print Thin Lines/Double Lines Page Page Page Page 3.17 To Decrease the Image Density and Save Toner (To Print in the Toner Save Mode) Page Page 3.18 To Adjust the Image Density in the Toner Save Mode Page Page 3.19 To Print Illegible Gray or Colored Text in Black Page 3.20 To Ignore Blank Pages for Printing Page Page 3.21 To Sharply Print Black Text Page Page Page Page Page Page Page Page Page 3.22 To Prevent Dark Toner from Coming Off Page 3.23 To Register the Image Quality Adjusted Corresponding to a Preference (To use the Custom Color Settings) Page Page 3.24 To Print a Full-Color Original in Two Colors 3.24.1 To Adjust Colors Page Page Page Page 3.24.2 To Adjust the Sharpness Page 3.24.3 To Print a Full-Color Original in Two Colors 3.25 To Use ICC Profile 3.25.1 To Create ICC Profiles for Printing on the Paper to be Used Page Page Page Page 3.25.2 To Print Precise Colors Using Existing RGB Source ICC Profiles Page Page Page 3.25.3 To Perform Simulated Printing with CMYK Inks of Each Ink Manufacturer Page Page Page To Convert Colors with Specified Source ICC Profiles (Not Using Embedded ICC Profiles) 3.25.4 Page Page Page Page 3.25.5 To Perform Further Adjustment After Using ICC Profiles Page Page Page 4. e-Filing-specific Adjustments 4.1 To Clearly Store a B/W Image in the Auto Color Mode Page 4.2 To Store an Original while Reducing the File Size Page 4.3 To Store a Color Photo Image, while Minimizing Moir Page 4.4 To Match the Color Balance on the Original (To adjust the color balance in Print to Box) Page 4.5 To Scan and Print, while Minimizing Moir Page 4.6 To Finely Print the Image Stored in the e-Filing box (To print images stored through Copy to Box or Print to Box) Page 4.7 To Store an Image Suitable for Displaying on the Monitor or Image Editing Page 4.8 To Finely Print Color Images Scanned and Stored (To print images stored through Scan to Box) Page 4.9 Appendix Page 5. Scanning-specific Adjustments 5.1 To Clearly Scan Text Page 5.2 To Scan an Original, while Eliminating the Background Color (To eliminate the background density) Page 5.3 To Clearly Scan and Print an Original in Black and White (To improve gradation and reduce graininess) Page 5.4 To Scan the Original, while Reducing the File Size 5.4.1 To Reduce the File Size by Changing the Options when Scanning the Original Page Page 5.4.2 To Reduce the File Size in Slim PDF Page 5.5 To Sharply Scan the Original (To increase the sharpness intensity) Page 5.6 To Scan an Original, while Enhancing Black Page 5.7 To Scan an Original with the Desired Gradation Page 5.8 To Register the Original Mode Optimal for a Particular Type of Original (To have "Custom" selected)