Patent ID: 7116431

Claim:
An image forming apparatus for printing one or more images on one or more recording sheets supplied from a particular paper cassette comprising: a plurality of paper cassettes for storing recording sheets of different sizes respectively; at least one first memory table for memorizing a plurality of print types in a predetermined order from a highest priority to a lowest priority, wherein the plurality of print types are prioritized based on a selected printing mode; a second memory table for memorizing a plurality of comparative print types which are to be compared with the plurality of print types respectively; and a controller for selecting a first paper cassette from the plurality of paper cassettes that stores recording sheets suited to print an image and has a print type of possible highest priority in the respective first memory table, for selecting a second paper cassette from the plurality of paper cassettes that stores recording sheets suited to print the image and has a comparative print type to be compared with the print type of the first paper cassette in the second memory table, and for selecting one of the first and second paper cassettes based on a predetermined criterion of paper waste reduction as an ultimate paper cassette.