Instruct: Classify the given review into positive or negative sentiment.
Query: great if you leave it on all of the time

The printer is fine if it is left on all of the time. If not, then be prepared for a lengthy and really noisy start up sequence, lasting for minutes upon minutes and then a couple of misprinted pages until it begins to work. In its favor are the individual ink supplies, but on the other hand, if you only want to print black ink on a page, as for text, it will not function unless all colors are in adequate supply.