Abstract: A non-step apparatus for adjusting the height of a set of paper pressing wheels disposed on at least one side of a large-scale UV ink-jet printer, comprising a turnable handle and a driving device, wherein one end of the driving device is connected with a pressing bar which can control the movement of the set of paper pressing wheels, and the other end is connected with the turnable handle so that the height of the set of paper pressing wheels can be adjusted via the movement of the pressing bar moved by rotating the turnable handle.

Abstract: An adjusting device for adjusting printing heads of inkjet printing machine includes a base connected to a printing unit and a plurality of printing assemblies are respectively connected to the base. Each printing assembly has a printing head connected thereto and a connection board is connected to an end wall of each printing assembly. Three adjusting members extend through the end board and contact against the end wall, and the three adjusting members are located at three peaks of an imaginary right triangle on the end board so as to adjust the printing head in different directions. A fourth adjusting member extends through the end board and is fixed to the end wall. The fourth adjusting member is located at a center of weight of the imaginary right triangle.

Abstract: A printing device for inkjet printing machine includes a base having a printing unit connected thereto and the printing unit includes a plurality of printing heads and ink cartridges. An UV beam generating device is connected to a side of the base and has an aperture defined in an underside thereof so that the UV beams goes through the aperture and toward an object to be printed. An anti-scattering device is connected between the printing heads and the aperture so as to keep the UV beams away from the nozzles of the printing heads.