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Dominik5EF3
Participating Frequently
June 23, 2021
Question

Can I create PostScript files *.ps with different brightness of the same original document

  • June 23, 2021
  • 2 replies
  • 671 views

Hello,

 

1st question:

Does a *.ps file contain information about brightness and if the content is w/b or colour?
The content of the file is text and picture (mixtured)

 

2nd question:

Detailed: In my Windows 7 VM I use a printer configuration to print via SAMBA to my Linux host. The real printer is connected to the Linux host PC.

 

What I want is to print from a programme in my Windows guest and create this way a *.ps file via a virtual printer. After I can print this *.ps file in my Linux host.

 

For this purpose I need a PS driver, that supports the setting "brightness". I have found such a PostScript driver, that has settings that allow to adjust brightness. It is this windows Vista 32bit driver (There is no driver for this printer for Windows 7):

https://www.support.xerox.com/de-ch/product/workcentre-7132/downloads?platform=winvista&category=drivers&language=de&attributeId=

 

Manual:

https://download.support.xerox.com/pub/docs/WC_7132/userdocs/any-os/en/WC7132_PSUG_en.pdf

 

I do not have this printer. I only use this printer driver for my virtual printer to create *.ps-files.

 

My expectation was, that when I set the printer setting "brightness" to very bright, that now I will get a *.ps file of my document (It has pictures and text in it), that has a very bright look. But it seems that the setting "brightnesss" of this printer driver has no effect. Why?

 

(As I have no Postscript viewer I have first converted this *.ps file into PDF, to show how it looks like.)

 

This is my resulting *.ps file:

https://filehorst.de/d/ducoszJl

 

Would be very interested in this. Help is very appreciated. Thank you.

    This topic has been closed for replies.

    2 replies

    T
    Test Screen Name
    Legend
    June 23, 2021

    By the way, I don't think any app exists to change brightness once you have PS file. You need to change it FIRST in  the original format.

    D
    Dominik5EF3Author
    Participating Frequently
    June 23, 2021
    quote

    For something to become more bright or less bright is done by changing all of the colours of all of the elements, [...]
    [... ] I don't think any app exists to change brightness once you have PS file. You need to change it FIRST in  the original format.


    By @Test Screen Name

     

    Thank you.

     

    As I print with this PS-driver from Windows Wordpad, my origianl format is a Wordpad document.

    My expectation was, that the process that creates the *.ps file with this SP-driver does make the colour changes to make it brighter.

     

     

    D
    Dominik5EF3Author
    Participating Frequently
    June 23, 2021

    So: Why has the setting brightness of this ps-driver no effect in the creating process of the *.ps file?

    And also when I choose the setting black-white: The created *.ps file nevertheless is in colour. Why does the setting colour/ w/b of this driver not work?

    T
    Test Screen Name
    Legend
    June 23, 2021

    "Does a *.ps file contain information about brightness and if the content is w/b or colour?
    The content of the file is text and picture (mixtured)"

     

    Brightness is not a graphical property or setting. Rather, it is just the colour of each element. For something to become more bright or less bright is done by changing all of the colours of all of the elements, perhaps using a LUT or CMM.

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