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"La impresora" is a form of "impresora", a noun which is often translated as "printer". "El fax" is a form of "fax", a noun which is often translated as "fax". Learn more about the difference between "la impresora" and "el fax" below.
la impresora()
A feminine noun is almost always used with feminine articles and adjectives (e.g., la mujer bonita, la luna llena).
el fax()
A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
1. (message)