Printing medium mechanism unit for printer

Abstract

The invention discloses a printing medium tension mechanism unit for a printer. The unit includes a pair of rack guides and a tension bar; Composition, the gap adjustment plate and the rack are arranged staggered along the axial direction of the tension bar; both ends of the tension bar are equipped with gears and guide bearings, the tension bar is installed in the rack guide, and the gear and the rack are meshed to adjust the gap. The guide working plane on the back plate is pressed against the guide bearing. After setting the gap adjustment backing plate, when the equipment is assembled, the gap adjustment backing plate can be adjusted to increase the distance between it and the rack, so as to facilitate the loading of the tension bar, and then it can be used to connect the gear and the rack. The working gap between the racks is adjusted to be very small, or even there is no gap, so that the tension bar, the paper feeding roller and the winding roller of the printer are always in an ideal parallel state, which provides a technical guarantee for improving the printing quality of the printer.

Description

technical field [0001] The invention relates to the field of printers, in particular to a printing medium tension mechanism unit for a printer. Background technique [0002] Existing large-scale printers are generally equipped with a tension device, through which the printing medium is in a proper tension state, which not only helps to ensure the printing quality, but also enables the printed printing medium to be wound on the winding roller in parallel, Avoid deflection during winding. The tension device on the printer usually includes several tension mechanism units, such as figure 1 As shown, each tension mechanism unit is composed of a pair of rack guides symmetrically installed on the wall panels on both sides of the printer and a tension rod floatingly installed in the rack guides, wherein each rack guide Both are equipped with a rack and a baffle plate parallel to the rack, and a straight-line guide channel is formed between the rack and the baffle, and gears are pr...

AI Technical Summary

Problems solved by technology

Since the purpose of setting up the tension mechanism unit is to make the printing medium move in parallel under the condition of proper tension, so as to ensure the printing quality of the printer, and whether the axis of the tension rod can be aligned with the paper feeding roller, winding roller and printing head of the printer The motion track of the machine is always kept in a good parallel state, which will directly affect the printing quality of the printer. Therefore, the tension mechanism unit on the existing printer has a large gap between the gear on the tension bar and the rack in the rack guide. Radial clearance, thus limiting the further improvement of the printing quality of the printer

Images