Printer medium transmission clutch brake assembly and printer

Abstract

The invention discloses a printer medium transmission clutch brake assembly and a printer containing the printer medium transmission clutch brake assembly. The printer medium transmission clutch brakeassembly comprises a gear shaft, a first transmission gear, a damping structure, a ratchet wheel and a second transmission gear, wherein the first transmission gear, the damping structure, the ratchet wheel and the second transmission gear are sleeved on the gear shaft, one end of the damping structure is fixedly connected to the first transmission gear, the other end of the damping structure andthe ratchet wheel form clutch transmission connection, the ratchet wheel and the second transmission gear form contact transmission, the first transmission gear is engaged with the power gear of a printer transmission system, the second transmission gear is engaged with the winding shaft gear of a printer, the printer medium transmission clutch brake assembly further comprises a ratchet claw matched with the ratchet wheel and the printing head of the printer, the ratchet claw is engaged with the ratchet wheel when the printing head is not depressed, and the ratchet claw is disengaged from theratchet wheel when the printing head is depressed. According to the invention, by arranging the structure, the braking of the color medium during the non-printing can be achieved so as to avoid the waste of the color medium, and the color medium can be automatically pre-tightened after the printing is completed so as to avoid the damage on the color medium and other abnormalities, such that the operation is simple, and the method is suitable for promotion application.

Description

technical field [0001] The invention relates to the field of printers, in particular to a printer media transmission clutch brake assembly and a printer. Background technique [0002] Existing printers generally use the mesons to be printed (such as paper, labels, etc.) and the color mesons to be driven by a motor and a synchronous transmission system. From the structure, it is generally the power gear of the transmission system and the transmission gear containing the damping structure. Engagement, the transmission gear with damping mechanism meshes with the rewinding shaft gear. When printing starts, the transmission system sends the mesons to be printed to the print head along the direction of the mesons. At the same time, the power gear drives the transmission gear with damping structure to rotate, including damping. The transmission gear of the structure drives the rewinding shaft gear to rotate, and the rewinding shaft pulls the color medium to move; before this, the p...

AI Technical Summary

Problems solved by technology

The existing structure is generally still consumed by the transmission of color mesons during this process, but it is not printed during this process, and there is a waste of color

[0003] In addition, in the existing printers, after the printing is stopped, the power gear of the transmission system is stopped, and the print head is lifted, the color meson is in a relaxed state due to the pressure of the previous print head, and it is easy to

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