Micro printer

Abstract

The invention relates to a micro printer, which comprises a casing, a printing unit cover plate assembled on the casing, a paper bin clamped with a paper roll and a paper bin cover plate, and is characterized in that the paper bin cover plate is clamped at the bottom of the paper bin opening through clamping grooves at both ends of the bottom, a crank arm coupling shaft is hinged under the support base at the inner side of the paper bin cover plate, a small crank arm fixed at one end of the coupling shaft is arranged at the inner side of the paper bin cover plate, a big crank arm fixed at the other end of the coupling shaft is arranged outside the end part of the paper bin cover plate side by side, the outer surface provided with an open-close button of the large crank arm and the outer surface of the paper bin cover plate are in the same plane, the distances between the support force bearing points of the large and the small crank arms and the shaft axis of the coupling shaft are the same and are in the same plane, a rear cover plate is arranged on the casing, and the paper bin of the shell is internally provided with paper accommodating space for clamping a standard universal paper roll. The micro printer has the advantages that the operation is easy; the paper bin cover plate is convenient to be opened and closed and paper exchange is convenient; the use stability and the reliability of the printer are significantly improved; and the service life is prolonged.

Description

technical field [0001] The invention relates to a micro printer. Background technique [0002] At present, the commercially available miniature printers for various instruments and meters used for tape-type data printing, because the panel sockets of the instruments and meters limited by the installation position have been standardized, the printing unit, ribbon, and control circuit board used , Paper rolls also require standardization and generalization. The inventor once aimed at some defects existing in the existing micro-printers, and designed a micro-printer with a new structure, such as an expansion-type micro-printer with a slanted support plate (patent No. 02274731.1) and an expansion-type micro-printer with an elastic connection panel on the shell Printer (Patent No. 02274730.3), etc. These improved printers have greatly enhanced the strength of the whole machine, and solved the problems of shell deformation caused by external force and self-weight of printing pap...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above-mentioned existing shortcomings, the main purpose of the present invention is to provide a practical micro-printer, which fundamentally improves the structural design of the paper compartment cover of the existing micro-printer, and effectively overcomes the difficulty in opening the paper compartment cover. , Inconvenient paper replacement, etc. It has the advantages of easy operation, convenient opening of the paper compartment cover, and quick paper replacement, which significantly improves the stability and reliability of the printer and prolongs its service life.

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