Xerography and typewriter: what they have in common

1. Step 1. Xerography — is used in — Laser printer. The principle of xerography.
2. Step 2. Laser printer — is a kind of — Printer. A printer.
3. Step 3. Printer — works like — Gutenberg printing press. A printer is a personal printing press: it transfers an image onto paper.
4. Step 4. Gutenberg printing press — has part — Movable type. Text is set from metal type.
5. Step 5. Movable type — works like — Typewriter. Each typebar carries a piece of movable type pressed against the paper.

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