Device and method to fix print images with a porous burner in a drying chamber

摘要

In a device or method to fix print images on a recording material, a printing fluid comprising a carrier fluid and chromophoric solid particles are applied to the recording material, the chromophoric solid particles being applied in a form of the print images to be fixed. Hot waste gas and infrared radiation are generated with aid of a porous burner. The infrared radiation is directed towards the recording material in a drying chamber such that the carrier fluid polymerizes or is vaporized, whereby a gaseous air/oil mixture arises in the drying chamber. The air/oil mixture is influenced with aid of the hot waste gas of the porous burner.

主权项

1. A device to fix print images on a recording material, comprising:
a drying chamber; recording material moving through the drying chamber, and a printing fluid comprising carrier fluid and chromophoric solid particles being applied on said recording material, the chromophoric solid particles being applied in a form of the print images to be fixed; a porous burner in which a combustion reaction of a fuel reaction of a fuel/air mixture supplied to the porous burner runs into a porous structure of the porous burner and not into an open flame to generate hot waste gas and infrared radiation; the porous burner being arranged in the drying chamber so that the infrared radiation is directed towards the recording material such that the carrier fluid of the printing fluid polymerizes or vaporizes, a gaseous air/oil mixture arising in the drying chamber, and said hot waste gas of the porous burner influencing said gaseous air/oil mixture; and an air feed feeding fresh air into the drying chamber to thin the air/oil mixture and wherein the fresh air is heated with aid of the hot waste gas of the porous burner.