Image Distinction: Adjusting Text and Photo Distinction Method
In many cases, originals include both photo and text in one page. The text areas of such originals are normally printed in black.
A color printer, however, inevitably uses not only the black toner but cyan, magenta, and yellow in layers to reproduce the black text in the color mode.
Also, using the screen method, the color printer may add colors in large or bold characters to reproduce the text in the same way as photos.
To reduce such cases in copying, the machine detects and determines the text area and photo portion while scanning originals. Then, it reproduces the black text area in single color using the black toner, and the photo portion in full color using the screen method.
This function also allows you to obtain the optimum copy results by modifying the standard for image distinction according to the character size of the text or its proportion in the whole original. For this adjustment, two items are provided; [Text/Photo] and [Color Text].
[Text/Photo] changes the ratio of detecting the text area of the original.
[Color Text] changes the proportion in detecting that the original text is black or colored.
Position the original.
Prepare an original for adjusting Image Distinction, and position it into the ADF or on the original glass.
Press the [COPY] tab to display the [COPY] screen.
Press [Quality Adj.] on the [COPY] screen.
Make an adjustment for Image Distinction on the [Quality Adjustment] screen.
Use [-] and [+] on the right side of [Text] to specify the desired level for Text/Photo distinction. Specify a negative level to increase the proportion of photo, or a positive level to increase the proportion of text.
Use [-] and [+] on the right side of [Color] to specify the desired level for Color Text distinction. Specify a negative level to increase the proportion of black text, or a positive level to increase the proportion of colored text.
To make the adjustment for Image Distinction on the [Distinction] screen, proceed to step 5.
To resume the standard level, select [0].
To output a sample copy to check the adjustment result, proceed to step 6.
To complete the adjustment, proceed to step 7.
If you press [Default Set] on the [Quality Adjustment] screen, all adjustment items are returned to the standard level.
Make an adjustment for Image Distinction on the [Distinction] screen.
Press [Distinction] to display the [Image Distinction] screen.
Select one from [-1] to [-4] under [Text/Photo] to increase the proportion of photo in Text/Photo detection.
Select one from [1] to [4] under [Text/Photo] to increase the proportion of text in Text/Photo detection.
Select one from [-1] to [-4] under [Color Text] to increase the proportion of black text in Color Text distinction.
Select one from [1] to [4] under [Color Text] to increase the proportion of colored text in Color Text distinction.
To resume the standard level, select [0].
To resume the standard level and return to the [Quality Adjustment] screen, press [Default Set].
To output a sample copy to check the adjustment result, proceed to step 6.
To complete the adjustment, press [OK] and proceed to step 7.
Output a sample copy.
After making the desired adjustment, press [Adj.Proof Copy] on the [Quality Adjustment] screen, [Adj.Proof Copy] on the [Image Distinction] screen, or Proof Copy on the control panel. Check the adjustment result with output image.
Repeat steps from 3 to 6 until the desired result is obtained.
Press [Close] on the [Quality Adjustment] screen.
The screen returns to the [COPY] screen. The [Image Distinction] indication can be found under [Quality Adj.] on the [COPY] screen.