line block

noun

a letterpress printing block made by a photoengraving process without the use of a screen

But there are cases in which a gradated tone, such as a sky, may need to be printed before the line block.

The actual wear in printing even of a fine line block is imperceptible, for the pressure is very slight.

This is, briefly, an outline of the process of making a line block.

A half-tone can be put on to a line block during its manufacture.

The print is obtained on the metal, and the block is made in a somewhat similar manner to that of a line block.

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