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The Grayscale print option optimizes the look of color slides for printing on a black and white printer by adding shading. The Pure Black and White option prints your slides in monochrome.
Open the presentation you want to print.
Click on the word File in the Menu Bar.
Select the option Print.
The Print dialog will appear.
5.In the Color/Grayscale section, choose the Grayscale option to print in black, white, and shades of gray.
6.Choose the Pure Black and White option to print in black and white only.
7.Click on the OK button.
Possibly it is running low on Blue ink - because colors are usually a mixture of inks - for example green is made from blue and yellow - if an ink runs low it will print the available colors or substitute the next available color.Probably if it prints green yellow - then it has no blue available to make the right shade.
your printer cartridge or head unit ink channel (some of color or black ink channel) constipated, you may try:
1) if your ink cartridge is not new, take out the cartridge put the bottom surface touch cleaner liquid(special for ink printer) or water for 1 hr (you can see ink spread water), then set back and test. refill enough ink maybe necessary.
2) still trouble, you need clean print head ink channel to do same thing above, if your print head is separated from the cartridge.
Yep same as above. Black prints very light gray after 5 years of good printing. Tried every test, replaced black cartridges with different brands. Just wondering if somehow you can clean the heads. I'm convinced the black head is almost totally clogged. Does anyone know how to remove the printer heas to do this?
The paper you print on is not relevant.
What happens is the green tint is the actual printer delivering all the colours to give a 'composite' black.
On shiny photo paper this is emphasized where as on plain paper the colour is absorbed and shows as intended.
So what can you do?
Move away from black and go for a tint such as sepia.