Duplex check printer using a print mechanism pivoted between document paths

A printer, for printing on both sides of a document, comprising:

• first printing document guides along which said document is moved for printing on a first side of said document;
• second printing document guides along which said document is moved for printing on a second side of said document;
• a print head disposed between said first and second printing document guides, wherein said print head is pivoted between a first printing position, in which said print head is disposed to print said first side of said document moving within said first printing document guides, and a second printing position, in which said print head is disposed to print said second side of said document moving in said second printing document guides;
• transfer document guides into which said document is moved for transferring said document between said first and second document guides;
• a deflector disposed between said transfer document guides and said printing document guides, wherein said deflector is movable between a first deflector position, in which said document is moved between said first printing document guides and said transfer document guides, and a second deflector position, in which said document is moved between said transfer document guides and said second printing document guides;
• and
• a plurality of rollers driven to move said document along said document guides.