This is mounted onto the back of a camera, usually a large format 4x5 inch type, in place of a conventional film carrier.
Between 2010 and 2017, a company called New55 Holdings, LLC (under its brand, "New55 FILM") researched and brought to market a black and white 4x5 positive-negative material that is exposed and processed in a Polaroid 545 holder.
[1][2] Between 2014 and 2017, New55 FILM sold New55 PN and other related products direct to photographers all over the world, generating over $1 million in sales.
Upon the failure of a key component supplier (the pod) and while demand remained strong, the company ended operations on December 31, 2017, closing out the proof-of-principle R&D phase of the project.
[3] Among the innovative features of New55 PN was the more environmentally friendly aqueous material application method used to coat the print.
The New55 PN system also improved over Polaroid's Type 55 by having a lower parts-count (thus less thrown away) and, in the photographic results, the New55 PN positive and negative densities were identical (where the Polaroid Type 55's were a stop or two apart, forcing the sacrifice of either the positive or the negative in order to gain ideal exposure on only one of the two components).