B 1 what are the four main steps in inventing movable type printing?

1. The blank of the same specification is made of clay, and one end is engraved with reflexive characters, the height of which is the same as the thickness of the edge of copper coins. It is hardened by fire and becomes a single clay movable type.

2. When typesetting, use the framed iron plate as the backing, coat a layer of medicine made of turpentine, wax and paper ash on it, then pick out the required clay movable type and put it in the frame one by one. After a frame is filled in, it becomes a version, and then it is baked with fire. When the medicine melts slightly, flatten the words with a flat plate, and after the medicine cools and solidifies, it becomes a version.

When printing, just brush the ink on the plate, cover it with paper and add some pressure. For continuous printing, two iron plates are used, one with a writing brush and the other with typesetting, and the two plates are used alternately.

After printing, bake it with a torch, shake it gently with your hand, and the movable type will fall off the iron plate, and then put it back in the original wooden box according to the rhyme, and use it next time.

Advantages and disadvantages of movable type printing

First, advantages

1 can be reused, reducing the number of stereotypes.

2, can be assembled at will, does not need every book to be rigid, and saves resources.

3, it can be replenished at any time, which greatly speeds up the plate making time.

4, easy to store and keep.

5, easy to modify.

Second, the shortcomings:

1, laborious.

It is easy to make mistakes because of carelessness.