lithography

 lithography, more commonly litho or offset printing[printing?:printing cutting finishing solution]. Lithography is based on the principal that basically, oil and water don‚Äôt mix. There is no raised surface on the printing plate; that is, it is plano graphic, consisting of imaging surfaces  that repel water,   and   non-printing   surfaces   that   attract it. The printing plate is attached to a cylinder that is covered in water  before  the  ink  is  applied.

When  the  ink  is  delivered  to  the plate, it adheres only to the image area.  As  the  plate  cylinder  turns, the ink is transferred  to a blanket cylinder   which   does   the   actual printing  to  the  substrate  

For the folding carton[carton?:carton box sample cutting machine] industry, offset lithography has long been the domain of the highest possible print[print?:printing image graphic cutting solution] quality. Improvements in computer and press technology however, are leveling the playing field so that purchasing decisions can be made more and more on other factors, such as run length, setup times and the cost of make ready materials such as plates, blankets and ink.