Colour Printing

In my earlier post I had highlighted some printing problems. These were more related to autocad printing.

Today i am going to tell u about printing in colour, whether it is a CAD Drg or a graphic from packages like Coreldraw, Photoshop, Illustrator etc.

• First thing to be noted is the fact that that the appearance of colours will never be same in print. What i want to highlight is that the colours as they appear in print will not match the way they look on screen either from brightness/ darkness point or in terms of colour shades. This is because all Display devices use RGB colour Combination whereas CMYK Combination is used in Printing technology. The colours get converted from RGB Format to CMYK Format ,  and hence the difference in their appearance when printed.
• Secondly  the media on which the drg or graphic is printed also makes a difference in the appearance. The type of Paper, Film and its properties affect the colours.
• The colours  appear on a CRT screen and a LCD Screen  differently. However  it is found that the printed colours are matching to a greater extent to a CRT Screen rather than a LCD Screen.

          All the above points refer to mostly printers used in home / office which are of inkjet type or laser type, using Four different colour cartridges viz. Cyan , Magenta, Yellow and Black.  The advanced printers use 6 or 8 cartridges and they produce the colours much better. Generally the additional cartridges have matte black, photo black,  light cyan and light magenta colours. They give more accurate colours.

      Due to all this above it is always advisable to get trial prints or check prints before going for multiple copies. It may increase the cost a little bit but instead of  being unhappy with the presentation or cursing oneself , better to take the necessary precaution !!!!!!!!!!!!