Magnetic attraction type printing head sheet

Abstract

The invention provides a magnetic attraction type printing head sheet which comprises an upper support and a thermal printing head sheet. The magnetic attraction type printing head sheet further comprises a first electromagnet used for fixing the thermal printing head sheet and a second electromagnet arranged on the upper support and corresponding to the first electromagnet. The first electromagnet is movably connected with the upper support, and meanwhile the invention further provides a printer. The printer not only adopts the magnetic attraction type printing head sheet, but also comprises a lower support arranged opposite to the upper support. A third electromagnet is arranged on the upper support, a fourth electromagnet corresponding to the third electromagnet is arranged on the lower support, and the third electromagnet and the fourth electromagnet attract each other to realize covering of the upper support and the lower support. According to the magnetic attraction type printing head sheet, a second electromagnet piece matched with the first electromagnet is used for generating mutual repulsive magnetic force, so that the printing effect is achieved, when the first electromagnet and the second electromagnet generate mutual attraction magnetic force, the thermal printing head sheet is attracted back, and therefore the thermal printing head sheet can be better protected against damage.

Description

technical field [0001] The invention relates to the technical field of printers, in particular to a magnetic suction print head sheet. Background technique [0002] In modern society, due to the vigorous development of express delivery and other industries, there is a huge demand for portable printers that can be used outside. However, the existing portable printers have the following disadvantages: [0003] First, the existing printers use springs to apply a pressure to the thermal head, and the thermal head relies on the pressure of the spring and the rubber roller to clamp the printing paper to achieve the printing effect of the printer. Such a structure is easy to cause The inconsistent pressure exerted by both ends of the spring will produce the effect of inconsistent printing density, that is, the printed fonts are of different shades; [0004] Second, the opening and closing methods of existing printers (especially printers with wrong titles) are all connected by the...

AI Technical Summary

Problems solved by technology

[0003] First, the existing printers use springs to apply a pressure to the thermal head, and the thermal head relies on the pressure of the spring and the rubber roller to clamp the printing paper to achieve the printing effect of the printer. Such a structure is easy to cause The inconsistent pressure exerted by both ends of the spring will produce the effect of inconsistent printing density, that is, the printed fonts are of different shades;

[0004] Second, the opening and closing methods of existing printers (especially printers with wrong titles) are all connected by the hinge of the upper cover group and the bracket of the lower cover group. When opening and closing the cover, it is necessary to slide the buckle of the upper cover group to To open the paper compartment of the printer, such a structure requires a relatively large force to open the cover, and often new users do not know how to open the cover and get into embarrassment

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