Aspects of the present disclosure relate to a printable medium including a polyurethane dispersion. As an example, a printable medium may include a fabric base substrate, with an image-side and a back-side. A film-forming layer may be applied to the image-side of the fabric base substrate, including an anionic polyurethane dispersion having a reactive group on a backbone of the polyurethane dispersion and a reactive group on a capping unit of the polyurethane dispersion. An ink-receiving coating layer may be applied over the film-forming layer, including a crosslink agent.

A fixer fluid can include a fixer vehicle with water, an NH-type or N-alkylated lactam co-solvent, and a phosphate ester surfactant. The fixer fluid can further include from 0.5 wt % to 12 wt % an azetidinium-containing polyamine polymer dispersed in the fixer vehicle.

A fabric printable medium includes a fabric base substrate including yarn strands and voids among the yarn strands; a finishing coating attached to the yarn strands of the fabric base substrate to form coated yarn strands; and pore spaces among the coated yarn strands and coinciding with at least some of the voids of the fabric base substrate. The finishing coating includes a crosslinked polymeric network. The fabric printable medium further includes a fire retardant coating applied to aback-side of the coated yarn strands.

A fabric printable medium includes a fabric base substrate including yarn strands and voids among the yarn strands; a finishing coating attached to the yarn strands of the fabric base substrate to form coated yarn strands; and pore spaces among the coated yarn strands and coinciding with at least some of the voids of the fabric base substrate. The finishing coating includes a crosslinked polymeric network. The fabric printable medium further includes a fire retardant coating applied to aback-side of the coated yarn strands.