The 19th century Chromograph allowed an impression of something written on paper with violet ink to be transferred to a soft gelatinous surface (blue). By afterwards pressing blank sheets of paper onto the gelatine surface a number of copies of the original document can be made. This is an early form of Chromolithography, a type of lithography that in many ways became a very different and more sophisticated printmaking process. A chromolithograph is a coloured image printed by many applications of lithographic stones, each using a different colour ink, allowing the production of coloured prints without the cost, time, and risk of hand colouring. The skillful use of chromolithography allowed for the creation of images with every imaginable colour and with an appearance that sometimes closely copied that of original watercolours and oil painting.