No matter what options I select (and I have tried them all), every scan I do comes out with the same contrast/brightness, and it's not good. The white is OK, but the dark black writing on my original document comes out as merely RGB=(64,64,64). I've tried both TWAIN interfaces ("WIA-hp scanjet 8200 series" and "hp scanjet 8200 series TWAIN") to no avail.
Is there a setting inside the scanner, forcing it to produce scans with a particular contrast/brightness?
Last things first: NO USER SERVICEABLE PARTS INSIDE.
That's the way HP does things. There are no rheostats or pots to adjust. It's all done electronically now, with chips and things.
You never said how it does with color or greyscale photos or drawings.
As for the RGB=(64,64,64), that's about right for the scan picture settings and the mixed (text and graphics) setting, and is particularly true for color picture settings. Have you tried using the setting for drawings (or line art), specifically greyscale drawings? Usually the greyscale lineart or drawing setting will render black text. You might also try scanning with the settings set for Text. If the greyscale drawing settings or greyscale text settings do not produce black text, try reinstalling your software and drivers.
If the contrast stays the same for all settings after reinstalling the software and drivers, and if it doesn't scan color and greyscale pictures correctly, then it sounds like your scanner is going bad.
As for the scans you've already done, you can darken the text by taking it into a photo editor, such as Paint Shop Pro or Photo Shop, and adjust the contrast and brightness to get the effect you desire.
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Not sure if this is exactly the same as yours your model hard to find I had 2 similar monitors at previous employer and they both operated the same way
Taking a Look
1. Power Switch
Pressing this button turns the display system power on or off.
2. Menu/Select ? Pressing this button pops up the OSD menus on the screen, and used to
select ("Up" direction) the OSD control options on the screen.
? This button is used to select ("Down" direction) the OSD control options on
4. + This button is used to increase the value of the selected OSD control option.
5. 0 This button is used to decrease the value of the selected OSD control option.
Quick Adjustment Function
When the OSD Menu is not active, the following functions are available for the quick
Pressing ? button once pops up the OSD Function Main Menu .
Pressing ? button once pops up the small Brightness icon. Use +or 0button to adjust
the Brightness level.
Pressing + button once pops up the small Volume icon. Use +or 0 button to adjust the Volume level.
When you press menu on the monitor it will bring up the brightness & contrast, along with several other options. Navigate using the Up and Down keys on the monitor. Press menu on the monitor again to access the specific option you want to change and use the up and down keys on the monitor to change the option.
click start control panel,display,desktop you can select a different desktop from the drop down list or a browse button where you can select different picturesthis may vary depending on your operating system also settings you can change the settings for more or less pixels or from the drop down list pick the appropriate level of color range or troubleshoot also select advanced then general dpi normal size,larger size or custom settings always click APPLY after making any changeshope this helps
May I know the model # of your machine?
Some of brother machine have the copy options where you can change the brightness, contrast and color of the document that you are copying.
For example for MFC-240:
You can change the brightness contrast by pressing copy mode. Then load the document in the feeder, press copy option so that it will show the option to change the brightness, contrast and color. Just press the arrow key to select the brightness then hit ok/menu. then press arrow key to have it lighter/darker..
Hope this helps.
hi, Go to menu and then select main. then select reset and execute it.After that try to adjust the brightness and contrast. Remember on thing, in some projectors the brightens and contrast will be active when there is video signal. also try that. ok
hi, you can adjust the contrast and brightness of the screen accordingly using the following instructions. Please select the right combination of brightness and contrast according to your desire.
Please check out controls in the bottom of your monitor, below the scree. I have provided the image below for your reference.
In this the fourth option is OSD menu. Please click on it and you will scoll down to options .
you can see options called "brightness and contrast". I have added picture for this too!
Once you go that page,use the menu to enter! then use the 2nd and 3rd button to adjust the brightness. Now your job is done.Please click on 1st button to exit. If you need more assistance in this, please write back to us. Please rate my solution as helpful!
By following these steps u can adjust the brightness
Press "Menu" on your LCD's display panel (usually below the screen). Various display options will be shown on the screen.
Select brightness from the options. This is usually indicated by a sun. Use the "+" and "-" buttons on your display panel to increase or decrease brightness.
Select contrast from the options. This is usually indicated by an oval half black and half white. Use the "+" and "-" buttons on your display panel to increase or decrease contrast.
If its starts out bright enough then rapidly goes to dark it may not be a matter of contrast. If it is the contrast hit the menu button and go into the video menu then select user defined as the setting select the contrast and adjust it to whatever specific setting you would like.