Multiple attitude low paper sensor mechanism

摘要

A low paper sensor mechanism for a printer includes two paper supports. Each paper support includes a fixed roller rotatable about a fixed roller axis and a movable roller rotatable about a movable roller axis and pivotable about the fixed roller axis from a start position to an end position, the movable roller and fixed roller spaced a predetermined distance apart and capable of supporting a paper supply roll. A detection device includes a sensor having an emitting element and a detecting element disposed in a line of sight of the detecting element. The movable roller is translatable from the start position toward the end position as a diameter of the paper supply roll decreases to less than or equal to the predetermined distance thereby allowing the paper supply roll to fall between the fixed roller and the movable roller thereby restoring the line of sight.