You have now completed Lesson 2 which covers the basic types of
laboratory print producing machine(s) (equipment). We have covered the
basic operation and operator's preventive maintenance of each. The types of
equipment you might come in contact with from time to time may not be the
exact same model or number, but the principals are the same as long as you
work with a contact printer, enlarger, or print processor. You have to
maintain them in order to be able to produce top quality work. Never fall
behind on preventive maintenance.