CN203427462U - Thermal transfer printer - Google Patents

Abstract

The utility model discloses a thermal transfer printer applied to the technical filed of printers. The thermal transfer printer comprises a carbon belt rollback device, a printhead in-palace device and a metal rack. The carbon belt rollback device and the printhead in-place device are all installed in the metal rack through a rotating shaft. The carbon belt rollback device comprises a carbon belt supplying end gear, a first gear set and a stepping motor output shaft gear. Each equal transmission ratio gear is arranged between the carbon belt supplying end gear and the stepping motor output shaft gear and between a carbon belt recovery end and the stepping motor output shaft gear. The thermal transfer printer overcomes technical defects in the prior art that a carbon belt is easy wrinkle during the rollback process and the printhead shakes, and the thermal transfer printer provided by the utility model prevents wrinkling of the carbon belt during the rollback process and shaking of the printhead.

Description

A kind of thermal transfer printer

Technical field

The utility model relates to a kind of printer, particularly a kind of thermal transfer printer.

Background technology

Hot transfer technique, briefly, utilize exactly special carbon ribbon, by the operation principle of similar facsimile machine printhead, the mode by the carbon dust coating on carbon ribbon through heating, is transferred in the material of paper or other kinds, because the coated substance on carbon ribbon can be selected as required, produce stronger adhesive force, add the selection of print media, more can guarantee that the writing printing is not subject to external influence; And how the process of this heating heats, can give computer and control.

The product that hot transfer printing is printed has the test of the time of standing, the type that can remain unchanged for a long time, and word can long preservation, do not fade, and can, because of just wearing and tearing of solvent contact, can compared with higher position, not cause being out of shape the advantages such as variable color by Yin Wendu.

The operation principle of thermal transfer printer carbon ribbon be carbon ribbon along with label marches forward together, by carbon ribbon recovery end, reclaimed; And because the diversity of label sizes has determined that we must carry out a note detection operation to label paper when printing a new label, this has just caused a large amount of carbon ribbon wastes.

In prior art, the printer of use only arranges travelling gear at carbon ribbon feed end, by stepper motor output shaft gear, by gear train, is driven; Therefore, in process of production in order to reduce carbon ribbon waste, need to stop printer and lift head device, manual carbon ribbon rollback to feed end, but it is easily wrinkling in the process of manually returning carbon ribbon, will to exist carbon ribbon to reclaim, cause print quality to decline, carbon ribbon reclaims loose, affects the problem of paper feed and print quality.

The thermal transfer printer using in prior art, push rod and printhead installing plate butt, in print procedure, there is considerable influence to printhead installing plate in the motion of push rod, make printhead because shaking phenomenon appears in the motion of push rod, be unfavorable for the carrying out of print procedure.

Utility model content

Technical problem to be solved in the utility model is to provide and a kind ofly prevents that carbon ribbon rollback is wrinkling, the thermal transfer printer that printhead rocks.

In order to solve the problems of the technologies described above, the utility model provides following technical scheme: a kind of thermal transfer printer, comprise carbon ribbon backspace mechanism, printhead put in place device and metal frame, described carbon ribbon backspace mechanism and the printhead device that puts in place is all arranged in metal frame by rotating shaft; Described carbon ribbon backspace mechanism comprises carbon ribbon feed end gear, the first gear train and stepper motor output shaft gear, and described stepper motor output shaft gear and carbon ribbon feed end gear are by the first gear train transmission; The described printhead device that puts in place comprises handle, push rod, printhead installing plate and fixed axis, and described handle and push rod are one-body molded and be hinged on fixed axis, and the first half of push rod is an arc convex;

Described carbon ribbon backspace mechanism also comprises carbon ribbon recovery end gear and the second gear train, and described stepper motor gear of output end and carbon ribbon recovery end gear are by the second gear train transmission, and described the first gear train is identical with the second gear train gearratio;

The described printhead device that puts in place also comprises spring fitting plate and spring, and the projection on described push rod and spring fitting plate offset, and spring is between printhead installing plate and spring fitting plate.

The beneficial effects of the utility model are:

1, compared with prior art, recovery end at carbon ribbon in carbon ribbon backspace mechanism is provided with gear, and the ratio gear group such as between two ends gear and stepper motor output shaft gear, be respectively equipped with, therefore, the same power source, etc. gearratio in the situation that, realized that two ends gear linear velocity is identical and action is synchronous, like this can be so that carbon ribbon be more steady in print procedure, reduce the wrinkling probability of carbon ribbon, improve print quality;

2, when handle clockwise (supposition is Print direction clockwise) motion, the push rod being fixedly hinged with it on same fixed axis rotates, projection on push rod promotes spring fitting plate and moves upward, in spring fitting plate motion process, promote spring upwards, and drive thus printhead installing plate to move upward, and finally contact rubber roll; When handle moves counterclockwise, push rod, spring fitting plate, printhead installing plate are all returned to former beginning and end operating position;

Compared with prior art, by spring fitting between spring fitting plate and printhead installing plate, the impact of the motion drawn stem of printhead installing plate is diminished, can not appear at again in print procedure, because of rocking of push rod, the phenomenon that causes printhead to rock, has strengthened printhead traveling comfort.

Accompanying drawing explanation

Below in conjunction with accompanying drawing and example, technical solutions of the utility model are further illustrated:

Fig. 1 is the structural representation of a kind of thermal transfer printer of the utility model;

Fig. 2 is the carbon ribbon backspace mechanism structure chart of a kind of thermal transfer printer of the utility model;

Fig. 3 is put in place the structure chart of device of the printhead of a kind of thermal transfer printer of the utility model.

The specific embodiment

As shown in Figure 1, Figure 2, Figure 3 shows, a kind of thermal transfer printer of the utility model, comprise carbon ribbon backspace mechanism, printhead put in place device and metal frame 1, described carbon ribbon backspace mechanism comprises carbon ribbon feed end gear 10, the first gear train 81, the second gear train 82, carbon ribbon recovery end gear 11 and stepper motor output shaft gear 61; The first gear train 81 and the second gear train 82 form equipment gear group 8, and stepper motor output shaft gear 61 is arranged on the output shaft of stepper motor 6; Between stepper motor output shaft gear 61 and carbon ribbon feed end gear 10, by the first gear train 81 transmissions, between stepper motor output shaft gear 61 and carbon ribbon recovery end gear 11, pass through the second gear train 82 transmissions; The first gear train 81 is identical with the gearratio of the second gear train 82, and shares several gears between two groups of gears; After stepper motor 6 startings, by stepper motor output shaft gear 61, along the first gear train 81 and 82 two gear trains of the second gear train, send power to be engaged with carbon ribbon feed end gear 10, carbon ribbon recovery end gear 11 simultaneously; Therefore, same driving power, etc. gearratio in the situation that, has realized two ends gear and there is same linear velocity, and action is synchronous; Like this, just prevented that the phenomenon of fold from appearring in carbon ribbon when reclaiming; Above-mentioned all gears are installed on fixed axis corresponding on metal shell 1.

The described printhead device that puts in place comprises handle 2, push rod 4, spring fitting plate 5, printhead installing plate 7, spring 9 and fixed axis 3, handle 2 and push rod 4 are one-body molded and be hinged on fixed axis 3, the first half of push rod 4 is the projection 41 of an arc, described protruding 41 offset with spring fitting plate 5, spring 9 is fixedly mounted between printhead installing plate 7 and spring fitting plate 5, both are hinged on printhead installing plate 7 and spring fitting plate 5 on another fixed axis, spring fitting plate 5 be provided with one can anti-throw-out lever 4 projection 41 excessive movements, cause the excessive compression of spring, so that the limiting plate 51 that possibly cannot recover.

Carbon ribbon backspace mechanism is arranged in metal frame 1 in corresponding rotating shaft, and the printhead device that puts in place is arranged in metal frame 1, in order to save space, material, by the specification that is designed and sized to 108mm*70mm*52mm of metal frame.

Above-described is only preferred embodiment of the present utility model; should be understood that; for a person skilled in the art; do not departing under the prerequisite of the utility model structure; can also make some distortion and improvement; these also should be considered as protection domain of the present utility model, and these can not affect effect and practical applicability that the utility model is implemented.

Claims (1)

1. a thermal transfer printer, comprises carbon ribbon backspace mechanism, printhead put in place device and metal frame, and described carbon ribbon backspace mechanism and the printhead device that puts in place is all arranged in metal frame by rotating shaft; Described carbon ribbon backspace mechanism comprises carbon ribbon feed end gear, the first gear train and stepper motor output shaft gear, and described stepper motor output shaft gear and carbon ribbon feed end gear are by the first gear train transmission; The described printhead device that puts in place comprises handle, push rod, printhead installing plate and fixed axis, and described handle and push rod are one-body molded and be hinged on fixed axis, and the first half of push rod is an arc convex; It is characterized in that,

Described carbon ribbon backspace mechanism also comprises carbon ribbon recovery end gear and the second gear train, and described stepper motor gear of output end and carbon ribbon recovery end gear are by the second gear train transmission, and described the first gear train is identical with the second gear train gearratio;

The described printhead device that puts in place also comprises spring fitting plate and spring, and the projection on described push rod and spring fitting plate offset, and spring is between printhead installing plate and spring fitting plate.

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