A tensioner device for use with a printing device is described which is to hold an end of a print target holder sheet in a substantially planar configuration across a platen of a printing device. The tensioner device can be fixed to a frame attachable to a platen of a printing device. The tensioner device has a first surface, and the frame has a second surface corresponding to the first surface. The first surface is formed to slide along the second surface in a first direction having an oblique angle with respect to a plane of the print target holder sheet. A fixing mechanism is also described which allows the first surface to be fixed to the second surface at different positions along the first direction. An apparatus including the tensioner device and the frame is also described. A system including a printer, a platen, tensioner devices and frames is also described.