Abstract: In some embodiments, a printing apparatus comprises a band capable of holding hot melt ink thereon, rollers configured and arranged to hold and transport the band with respect to a substrate, a printhead configured to thermally transfer a portion of hot melt ink from the band to the substrate to print on the substrate, an ink feed device configured to add hot melt ink to the band and to heat the hot melt ink on the band, and a rigid blade configured and arranged to cause hot melt ink to pass between a blade edge of the rigid blade and the band, wherein the rigid blade is shaped to minimize a contact area between the rigid blade and the band while controlling ink thickness of the hot melt ink on the band.

Abstract: Provided is a wind turbine including multiple components generating heat during operation of the wind turbine and a liquid cooling system, wherein the multiple components are thermally coupled by a liquid coolant cycle of the liquid coolant system to an ambient heat exchanger of the liquid coolant system, the ambient heat exchanger being arranged to exchange heat between a liquid coolant contained in the liquid coolant cycle and ambient air, whereby the liquid coolant system includes a heat pump having a cooling operation mode, wherein the heat pump is arranged in the coolant liquid cycle such that the liquid coolant of the liquid coolant cycle is cooled, when the heat pump is operated in the cooling operation mode. Also provided is a method for operating the wind turbine.

Abstract: In some embodiments, a printing apparatus comprises a band capable of holding hot melt ink thereon, rollers configured and arranged to hold and transport the band with respect to a substrate, a printhead configured to thermally transfer a portion of hot melt ink from the band to the substrate to print on the substrate, an ink feed device configured to add hot melt ink to the band and to heat the hot melt ink on the band, and a rigid blade configured and arranged to cause hot melt ink to pass between a blade edge of the rigid blade and the band, wherein the rigid blade is shaped to minimize a contact area between the rigid blade and the band while controlling ink thickness of the hot melt ink on the band.