Abstract: A printer with a mechanism for guiding paper has a lower casing having a printer body therein with a print head therein, an upper casing hingedly mounted on the lower casing for movement between a closed and an open position relative to the printer body, and the lower casing has a lower casing guide member and the upper casing having an upper casing guide member which is in spaced opposed relation to the lower casing guide member when the upper casing is in the closed position for defining between the guide members a paper guide path. The lower casing has a paper feeding opening for feeding a printing paper into the printer past the print head and over the lower casing guide member. The upper casing guide member is pivotally mounted on the upper casing for pivoting movement of the part of the upper casing guide member which is toward the paper feeding opening toward and away from the lower casing guide member.