What are fixer in pigment printing and what are the functions of fixer in pigment printing
In pigment printing, a fixer is a chemical substance used to bind the pigment to the fabric or substrate permanently. The fixer serves as a bridge between the pigment and the fabric, helping to anchor the pigment onto the fabric fibers. The functions of fixer in pigment printing include:
- Enhancing colorfastness: Fixer helps to improve the colorfastness of the pigment, making it more resistant to fading due to washing, sunlight, and other environmental factors.
- Improving washfastness: Fixer aids in binding the pigment to the fabric fibers and preventing it from washing out during the laundering process.
- Increasing rub fastness: Fixer helps to increase the rub fastness of the pigment, preventing it from rubbing off easily when the fabric is subjected to friction.
- Enhancing adhesion: Fixer assists in the adhesion of the pigment to the fabric, improving the overall quality and durability of the print.
- Modifying the pH level: Fixer can be used to adjust the pH level of the printing solution, which can affect the color and quality of the pigment print.
- Controlling dye migration: Fixer can also help to control the migration of the dye or pigment during printing, ensuring that the colors remain sharp and distinct.