PRINTING OF GRADATIONS

Beside the printing of flat masses of colour, one of the great resources of block printing is in the power of delicate gradation in printing. The simplest way of making a gradation from strong to pale colour is to dip one corner of a broad brush into the colour and the other corner into water so that the water just runs into the colour: then, by squeezing the whole width of the brush broadly between the thumb and forefinger so that most of the water is squeezed out, the brush is left charged with a tint gradated from side to side. The brush is then dipped lightly into paste along its whole edge, and brushed a few times to and fro across the block where the gradation is needed. It is easy in this way to print a very delicately gradated tint from full colour to white. If the pale edge of the tint is to disappear, the block should be moistened along the surface with a sponge where the colour is to cease.

A soft edge may be given to a tint with a brush ordinarily charged if the block is moistened with a clean sponge at the part where the tint is to cease. This effect is often seen at the top of the sky in a Japanese landscape print where a dark blue band of colour is printed with a soft edge suddenly gradated to white, or sometimes the plumage of birds is printed with sudden gradations. In fact, the method may be developed in all kinds of ways. Often it is an advantage to print a gradation and then a flat tone over the gradation in a second printing.