2-color printing of OMR sheets was necessary in the old technology. In some software's based on old technology, it is still necessary. BUT in the new technology Addmen OMR Sheet Software , 2-color printing is not necessary. You can print black and white OMR Sheets on your laser printer of photocopy machine or on single black color offset printing.
Still, some organizations insist on the use of colored sheets because they want to create an exact feel as the final examination for the practising student. Many a times users who are unaware or reluctant to accept the benefits of new OMR System also insist on colored OMR printing. However the Addmen OMR Software comfortably accepts the colored OMR Sheets as well. If the user has decided to print colored OMR Sheets, then following guidelines must be observed:
Colored OMR designs can be printed using a color Laser printer or inkjet printer.
Colored OMR can also be printed on offset to minimize cost.
Only 2 colors should be used for the OMR area. Any other designs on the sheet may have as many colors as desired.
One color Black is necessary.
Second color can be pink or orange or golden yellow. The second color should be from the family of red colors and these get quickly color dropped at the time of scanning.
Green or blue tones should be avoided in printing colored OMR sheet print.
Colored OMR Sheet designs can also be printed using offset printing.
The sheets which expect the candidates to respond by making "tick marks" or "thin line" impression responses should be preferably printed in 2 colors.
The answer sheet designs with OMR bubbles having a text label inside them should be preferably printed in 2 colors.
In case of Offset printing, the corner black index points are printed in both colors, such that they exactly overlap and there is no relative displacement i.e. zero-zero registration.