Image forming method using transparent printer media with reflective strips for media sensing

A method of forming an image onto a transparent print medium by an ink-jet printing device having an optical medium sensor for sensing edges of the transparent print medium, comprising the following steps:

• providing a roll of a transparent print medium, the medium having affixed to a first surface thereof an opaque reflective layer coincident with lateral edges of the transparent medium and coterminous with a transverse edge of the transparent print medium;
• loading the roll of the transparent print medium into the printer device such that said transverse edge extends orthogonally to a medium advance path of the printing device at a first lateral edge of the transparent print medium;
• advancing the transparent print medium along the medium advance path to a device printing region;
• using the optical sensor to locate lateral edges of the transparent print medium by location of outer edges of said opaque reflective layer and to enable ink-jet printing operations;
• performing the ink-jet printing operations on a second surface of the transparent print medium opposed from the first surface to form an image on a portion of the roll of the print medium;
• and
• cutting the transparent print medium to separate the portion of the print medium from the roll.