Question

what are trash marks?
○ dots made by an impact printer as a result of a bent pen
○ marks made by an inkjet printer due to improper toner
○ dots or marks that are reproducible as a result of dust or other material on the glass of a photocopier
○ blotches produced by a laser printer as a result of an old inked ribbon

Explanation:

To determine what trash marks are, we analyze each option:

• The first option: Impact printers (like dot - matrix) create dots from a bent pen (print head pin), but this is about normal printing, not trash marks.
• The second option: Inkjet printer marks from improper toner doesn't make sense as inkjet uses ink, not toner.
• The third option: Trash marks in photocopiers are often due to dust or foreign material on the glass (platen) that gets reproduced. This matches the definition of trash marks in photocopying.
• The fourth option: Laser printers create marks from toner, and "blotches from old inked ribbon" is incorrect as laser printers don't use inked ribbons.

So the correct option is the one about dots or marks reproducible from dust on a photocopier's glass.

Answer:

Dots or marks that are reproducible as a result of dust or other material on the glass of a photocopier