CN112455097B

CN112455097B - Thermal transfer printing equipment

Info

Publication number: CN112455097B
Application number: CN202011367444.0A
Authority: CN
Inventors: 不公告发明人
Original assignee: Xiamen Hanyin Electronic Technology Co Ltd
Current assignee: Xiamen Hanyin Electronic Technology Co Ltd
Priority date: 2020-11-27
Filing date: 2020-11-27
Publication date: 2022-07-12
Anticipated expiration: 2040-11-27
Also published as: CN112455097A

Abstract

The invention provides thermal transfer printing equipment, and relates to the technical field of printing devices; the printing head and the printing roller clamp the carbon ribbon and the recording paper to print the recording paper; the carbon ribbon assembly comprises a carbon ribbon supply part, a carbon ribbon recovery part and a carbon ribbon stripping roller, the printing head and the carbon ribbon stripping roller are arranged between the carbon ribbon supply part and the carbon ribbon recovery part, and the carbon ribbon stripping roller comprises: a shaft body and a peeling member; the shaft body is supported on the machine body; the stripping component comprises a guide sleeve which is rotatably sleeved outside the shaft body and an anti-sticking stripping layer which is sleeved on the periphery of the guide sleeve. The carbon ribbon peel roller is used for promoting the carbon ribbon direction of beating printer head after using, makes and beats printer head and push up tightly mutually with the carbon ribbon all the time when printing, ensures to beat printer head with flat, butt carbon ribbon when printing, and then makes and beat printer head and carbon ribbon looks pressure contact all the time when printing, promotes and prints the quality.

Description

Thermal transfer printing equipment

Technical Field

The invention relates to the technical field of printing devices, in particular to thermal transfer printing equipment.

Background

The thermal transfer printing equipment is mainly used for on-line printing on a packaging label made of a soft thin material or a smooth card surface and any occasion needing bar codes. The working principle is as follows: the print head is provided with an array of heating elements; the elements are driven and heated at appropriate times, and the heat generated by the elements melts the toner particles of the ink on the ink ribbon while transferring the toner particles to the recording sheet by pressure.

To ensure high-speed, high-quality printing, a thermal transfer ribbon stripping device is disposed on the thermal transfer ribbon path to separate the recording sheet from the thermal transfer ribbon after printing is completed. The stripping roller is made of plastic or metal, and carbon powder particles on a carbon surface of a printed carbon ribbon can be adhered to the stripping roller when the carbon surface passes through the surface of the metal or plastic stripping roller, so that after the carbon ribbon is printed for a period of time, the surface of the stripping roller is uneven, the flatness of the carbon ribbon in conveying is affected, and the printing quality is further affected. In view of this, the inventors propose the present application.

Disclosure of Invention

The invention discloses thermal transfer printing equipment, and aims to solve the problem that ink adhesion of a thermal transfer ribbon is very easy to aggravate when the thermal transfer printing equipment conveys the thermal transfer ribbon.

The invention adopts the following scheme:

the application provides a thermal transfer printing device, which comprises a machine body, a printing head, a printing roller and a carbon ribbon assembly, wherein the printing head, the printing roller and the carbon ribbon assembly are respectively arranged on the machine body, and the printing roller are arranged opposite to the printing head; the carbon ribbon assembly comprises a carbon ribbon supply part, a carbon ribbon recovery part and a carbon ribbon stripping roller, the printing head and the carbon ribbon stripping roller are arranged between the carbon ribbon supply part and the carbon ribbon recovery part, and the carbon ribbon stripping roller comprises: a shaft body and a peeling member; the shaft body is supported on the machine body; the stripping component comprises a guide sleeve which is rotatably sleeved outside the shaft body and an anti-sticking stripping layer which is sleeved on the periphery of the guide sleeve.

As a further improvement, the release layer is configured to have a smaller surface tension coefficient than metal and/or a higher thermal stability than the resin material article.

As a further improvement, the shaft body is arranged to extend along the width direction of the carbon ribbon; the stripping component is pressed and abutted to the carbon surface of the carbon ribbon.

As a further improvement, the anti-sticking stripping layer is made of a silica gel material or a rubber material; the peeling member is synchronously moved in pressure contact with the carbon surface of the carbon ribbon through the anti-sticking peeling layer to separate the carbon ribbon from the recording paper at the conveyance downstream side of the print head.

As a further improvement, the anti-sticking stripping layer is arranged on the periphery of the guide sleeve in a sleeving or spraying mode.

As a further improvement, the stripping device further comprises an isolation layer forming element arranged between the shaft body and the stripping component so as to enable the stripping component to be in at least partial clearance fit with the shaft body, a limiting part arranged at one end of the shaft body, and a limiting part arranged at one end of the shaft body far away from the limiting part, wherein two ends of the stripping component are rotatably arranged between the limiting part and the limiting part through the isolation layer forming element; wherein, observing from the axial direction, the limiting piece and the limiting part at least cover part of the stripping part.

As a further improvement, the isolation layer forming member is configured as a bearing or a sleeve that is fitted over both ends of the peeling member in the axial direction, and the bearing or the sleeve is supported between the shaft body and the peeling member to form the gap.

As a further improvement, the shaft body and the guide sleeve are made of hard materials.

As a further improvement, the guide sleeve and the shaft body are made of a metal material or a resin material.

As a further improvement, the carbon ribbon assembly further comprises a guide member for guiding the carbon ribbon along the carbon ribbon transport path, the guide member including a carbon ribbon guide roller having a plurality of and arranged at least between the carbon ribbon feeding part and the print head, and between the peeling roller and the carbon ribbon recovery part, wherein the carbon ribbon is tensioned on the carbon ribbon guide roller, and the peeling roller is in pressure contact with the carbon surface of the carbon ribbon to tension the carbon ribbon in a direction away from the print roller.

As a further improvement, the anti-sticking stripping layer covers the whole periphery of the guide sleeve, and the length of the guide sleeve is larger than the width of the carbon ribbon.

By adopting the technical scheme, the invention can obtain the following technical effects:

the application provides a thermal transfer printing equipment, the carbon ribbon peel roller of its configuration is used for leading the carbon ribbon so that it separates with print media with beating printer head use back to make beating printer head when printing all the time with carbon ribbon pressure contact, ensure to beat printer head when printing with flattening, butt carbon ribbon. Wherein, the carbon ribbon is guided and closely attached by the stripping roller on the conveying path to be always in a tightening state. The anti-sticking stripping layer is attached to the outer periphery of the guide sleeve, and the stripping roller is made of metal or resin materials and used for reducing the adhesion of carbon powder on a carbon surface to a stripping part and ensuring the flatness of the carbon ribbon.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic diagram of a thermal transfer printing apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a thermal transfer printing apparatus ribbon stripping roller according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view of FIG. 1;

FIG. 4 is a cross-sectional view of a thermal transfer printing apparatus with a ribbon stripping roller at another viewing angle in accordance with one embodiment of the present invention;

FIG. 5 is a schematic disassembled view of a thermal transfer printing apparatus ribbon stripping roller according to an embodiment of the present invention;

fig. 6 is a schematic disassembly view of a carbon ribbon stripping roller of a thermal transfer printing device in another view according to an embodiment of the invention;

fig. 7 is a schematic structural diagram of a thermal transfer printing apparatus according to an embodiment of the present invention at one of the viewing angles, wherein the structure of the printing apparatus is hidden for convenience of illustration.

Icon: 1-a shaft body; 2-a guide sleeve; 3-antisticking stripping layer; 4-a limiting member; 5-shaft sleeve; 6-body; 7-a print head; 8-a print roller; 9-a ribbon feeding member; 10-a ribbon recovery component; 11-carbon ribbon guide rollers; a-a carbon ribbon; b-recording paper.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without inventive efforts based on the embodiments of the present invention, are within the scope of protection of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Examples

With reference to fig. 1 to 7, an embodiment of the present invention provides a thermal transfer printing apparatus, which includes a body 6, a print head 7 disposed on the body 6, a print roller 8 disposed opposite to the print head 7, and a thermal transfer ribbon assembly. The print head 7 and the print roller 8 pinch the carbon ribbon a and the recording paper B to perform printing on the recording paper B. The carbon ribbon assembly includes a carbon ribbon supply member 9, a carbon ribbon recovery member 10, and a carbon ribbon peeling roller, and the print head 7 and the carbon ribbon peeling roller are disposed between the carbon ribbon supply member 9 and the carbon ribbon recovery member 10. The carbon ribbon stripping roller comprises: a shaft body 1 and a peeling member. The shaft body 1 is supported on the machine body 6. The stripping component comprises a guide sleeve 2 which is rotatably sleeved outside the shaft body 1 and an anti-sticking stripping layer 3 sleeved on the periphery of the guide sleeve 2.

The thermal transfer printing equipment is arranged at the positions between the stripping roller of the carbon ribbon assembly, the carbon ribbon supply part 9, the carbon ribbon recovery part 10 and the printing head 7 and the printing roller 8, so that the working efficiency and the printing quality are improved, and the thermal transfer printing equipment is suitable for occasions with high-intensity printing frequency. Specifically, the carbon ribbon assembly further includes a guide member guiding the carbon ribbon transport along the carbon ribbon transport path. The guide member includes a plurality of ribbon guide rollers 11, and the ribbon guide rollers 11 are disposed at least between the ribbon supply member 9 and the print head 7 and between the peeling roller and the ribbon recovery member 10. Wherein the ribbon is tensioned against a ribbon guide roller 11 and a peeling roller is brought into pressure contact with the carbon surface of the ribbon to tension the ribbon in a direction away from the print roller 8. Thus, the height of the contact point of the carbon ribbon guide roller 11 with the carbon ribbon is all above the height of the contact point of the peeling member with the carbon ribbon. Moreover, the contact point between the carbon ribbon guide roller 11 and the carbon ribbon is always on the contact point of the guide roller and the carbon ribbon, so that the carbon ribbon is always in a tensioned state from the supply end to the recovery end at the printing position.

Thermal transfer printing equipment's carbon ribbon peel roller is used for leading the promotion with the carbon ribbon after printer head 7 uses, makes printer head 7 all the time with carbon ribbon pressure contact when printing, ensures printer head 7 with the flattening, butt carbon ribbon when printing. The carbon belt is guided and tightly attached to the conveying path through the stripping roller to be always in a tightening state, and under the support of the stripping part of the stripping roller, the carbon belt is favorably lifted and driven when the carbon belt is frequently replaced, so that the operability and the convenience are improved. The periphery of the guide sleeve 2 is attached with an anti-sticking stripping layer 3 for improving the close fit of the carbon ribbon A and a stripping component and ensuring the flatness of the carbon ribbon A.

The shaft body 1 is extended along the width direction of the carbon ribbon, and the stripping component is pressed and abutted against the carbon surface of the carbon ribbon, thereby jacking up along the back position of the carbon ribbon to tighten the carbon ribbon. Wherein, the anti-sticking stripping layer 3 is coated on the periphery of the whole guide sleeve, and the length of the guide sleeve 2 is larger than the width of the carbon ribbon. The periphery of the whole guide sleeve is coated with an anti-sticking stripping layer 3, and the carbon tape is always accommodated on the guide sleeve along the width direction so as to ensure the complete contact of the carbon tape and the stable conveying.

In the process of solving the problem that carbon powder particles are easy to adhere to the outer surface of a stripping roller made of plastic materials and metal materials, the inventor finds that the stripping roller and a carbon belt cannot completely maintain synchronous movement in the high-speed printing process, and heat is generated in the relative sliding process of the stripping roller, so that the temperature of the stripping roller is at a relatively high level, and therefore, ink carbon powder particles on a carbon surface are easy to adhere to the periphery of the stripping roller. The inventor uses silica gel or rubber materials which are more stable than plastic and have smaller surface tension than metal materials, thereby achieving the effect of reducing the adhesion of carbon powder particles in the printing process. Wherein, antiseized peel ply 3 can constitute to cup joint the silica gel cover or the rubber sleeve in uide bushing periphery, also can constitute to adhere to the silica gel coating or the rubber coating in uide bushing periphery. In other embodiments, the release layer 3 can be configured as a release sleeve or coating having a surface tension less than that of metal (the surface tension of conventional metal articles) and/or a thermal stability greater than that of plastic articles made of resinous materials, wherein its thermal stability and/or surface tension coefficient is close to that of silicone and/or rubber.

The anti-sticking stripping layer 3 made of silica gel or rubber used in the embodiment can protect the carbon ribbon from being damaged by the stripping roller in the conveying process, and can improve the adhesion force with the carbon ribbon workpiece (the adhesion force generated by extruding air between the carbon ribbon and the colloid surface and mutually adhering the air) so as to reduce the relative movement between the stripping roller and the carbon ribbon and reduce the generation of heat. However, in the metal peeling roller in the prior art, if the surface of the roller is processed to be smooth to increase the adhesive force, the overall processing cost of the roller shaft is high, and the application and popularization are difficult. It should be mentioned that the anti-adhesion peeling layer 3 is disposed on the periphery of the guiding sleeve 2 by sleeving or spraying, so that the guiding sleeve 2 and the anti-adhesion peeling layer 3 can rotate synchronously with the movement of the carbon ribbon.

In one embodiment, the peeling member is synchronously moved in pressure contact with the carbon face of the carbon ribbon a by the anti-adhesion peeling layer 3 to separate the carbon ribbon a from the recording paper B on the conveyance downstream side of the print head 7. Meanwhile, the guide sleeve 2 is arranged on the surface, which is in contact with the carbon ribbon, of the carbon ribbon through an anti-sticking structure, so that the adhesion interference of ink on the carbon ribbon is effectively reduced, the adhesion of ink carbon powder particles on a stripping part is reduced, the cleaning frequency of the stripping roller is reduced, and the service life of the stripping roller is prolonged.

Referring to fig. 2 to 6, in one embodiment, the stripping member includes an isolation layer forming member disposed between the shaft body 1 and the stripping member to enable the stripping member to be in clearance fit with the shaft body 1. The barrier layer forming member is configured as a bearing or a sleeve fitted over both ends of the stripping member in the axial direction, and the bearing or the sleeve is supported between the shaft body 1 and the stripping member to form the gap. It should be noted that the isolation layer forming member is composed of a sleeve 5 which is sleeved between the shaft body 1 and the peeling member and is rotatably disposed at both ends of the peeling member, so that the peeling member is supported on the sleeve 5 and spaced apart from the shaft body 1 to form the isolation layer. The shaft sleeves 5 are arranged at the two ends of the stripping component to form isolation layers, so that heat dissipation and heat insulation are facilitated, the relative friction area between the stripping component and the shaft body 1 is reduced, and heat generated by friction is reduced and conducted to the outer surface of the roller. The anti-sticking stripping layer 3 on the surface of the stripping component is matched, and the temperature rise of the friction between the outer surface of the stripping component and the inner surface of the stripping component and the shaft body 1 is reduced, so that the adhesion of ink carbon powder particles on the surface of the stripping roller is greatly reduced, and the flatness of carbon tape transmission is ensured. In a preferred embodiment, the shaft is a bearing (which can be a micro bearing), and the bearing prevents heat from being generated between the peeling member and the shaft, which would affect the thermal stability of the peeling member.

In a preferred embodiment, the shaft body 1 includes a mounting portion extending in a direction away from the stopper 4, and the shaft body is supported on the body 6 by the mounting portion. Wherein, antiseized peel ply 3 comprises silica gel material or rubber material, and axis body 1 and uide bushing 2 comprise hard material for support antiseized peel ply 3.

The carbon ribbon stripping roller comprises a limiting part arranged at one end of the shaft body and a limiting part 4 arranged at one end of the shaft body far away from the limiting part, and two ends of the stripping part are rotatably arranged between the limiting part and the limiting part 4 through an isolating layer forming part. The stopper 4 and the stopper portion cover at least a part of the peeling member as viewed in the axial direction, so that the peeling member can be maintained between the stopper portion and the stopper 4 for stable contact with the carbon ribbon. The locating part 4 is detachably mounted at the outer end of the shaft body 1 through a fastening assembly, and the fastening assembly can be screws, nuts, screws, buckles, positioning pins and the like which are convenient to detach quickly. The stopper 4 is provided on one end located away from the mounting portion, and achieves an effect of enabling quick maintenance or replacement of the peeling member by fastening the assembly.

Preferably, the guide sleeve 2 is made of metal, preferably aluminum, and is used for supporting the anti-sticking stripping layer 3 to rotate synchronously with the carbon ribbon. In other embodiments, the guide sleeve can be constructed of a rigid structure made of a resin material. Wherein, the metal material does benefit to the adhesion tight fit of the antiseized peel ply 3 of silica gel material or rubber material to its heat conductivity is good, avoids axis body 1, peels off the produced heat of friction rotation between the part to be detained or can't dispel fast.

The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention.

Claims

1. A thermal transfer printing device is characterized by comprising a machine body, a printing head, a printing roller and a carbon ribbon assembly, wherein the printing head, the printing roller and the carbon ribbon assembly are respectively arranged on the machine body, and the printing roller are arranged opposite to the printing head; the carbon ribbon assembly comprises a carbon ribbon supply part, a carbon ribbon recovery part and a carbon ribbon stripping roller, the printing head and the carbon ribbon stripping roller are arranged between the carbon ribbon supply part and the carbon ribbon recovery part, and the carbon ribbon stripping roller comprises:

a shaft body supported on the machine body; and

the peeling component comprises a guide sleeve which is rotatably sleeved outside the shaft body and an anti-sticking peeling layer which is coated on the periphery of the guide sleeve, wherein the anti-sticking peeling layer is made of silica gel materials or rubber materials; and

a barrier layer forming member provided between the shaft body and the peeling member so as to enable the peeling member to be in at least partial clearance fit with the shaft body;

the ribbon peeling roller is disposed on a downstream side of the print head and is configured to be in pressure contact with a carbon surface of a ribbon through the anti-sticking peeling layer to separate the ribbon from the recording paper.

2. A thermal transfer printing device is characterized by comprising a machine body, a printing head, a printing roller and a carbon ribbon assembly, wherein the printing head, the printing roller and the carbon ribbon assembly are respectively arranged on the machine body, and the printing roller are arranged opposite to the printing head; the carbon ribbon assembly comprises a carbon ribbon supply part, a carbon ribbon recovery part and a carbon ribbon stripping roller, the printing head and the carbon ribbon stripping roller are arranged between the carbon ribbon supply part and the carbon ribbon recovery part, and the carbon ribbon stripping roller comprises:

a shaft body supported on the machine body; and

the peeling component comprises a guide sleeve which is rotatably sleeved outside the shaft body and an anti-sticking peeling layer which is wrapped on the periphery of the guide sleeve, wherein the anti-sticking peeling layer is constructed to have smaller surface tension than metal and higher thermal stability than a resin material piece; and

3. The thermal transfer printing apparatus according to any one of claims 1 or 2, wherein the anti-adhesion release layer is disposed on the outer periphery of the guide sleeve by means of sleeving or spraying.

4. The thermal transfer printing apparatus according to any one of claims 1 or 2, further comprising a stopper portion provided at one end of the shaft body, and a stopper portion provided at an end of the shaft body remote from the stopper portion, wherein both ends of the peeling member are rotatably provided between the stopper portion and the stopper portion via a spacer forming member; wherein, observing from the axial direction, the limiting piece and the limiting part at least cover part of the stripping part.

5. The thermal transfer printing apparatus according to claim 4, wherein the barrier layer forming member is configured as a bearing or a sleeve fitted over both ends in the axial direction of the peeling member, the bearing or the sleeve being supported to form the gap between the shaft body and the peeling member.

6. The thermal transfer printing apparatus according to any one of claims 1 or 2, wherein the shaft body and the guide sleeve are made of a hard material.

7. The thermal transfer printing apparatus according to claim 6, wherein the guide sleeve and the shaft body are made of a metal material or a resin material.

8. The thermal transfer printing apparatus according to any one of claims 1 or 2, wherein the ribbon assembly further comprises a guide member for guiding the ribbon along the ribbon transport path, the guide member including a ribbon guide roller having a plurality of rollers disposed at least between the ribbon feeding section and the print head and between the peeling roller and the ribbon recovery section, wherein the ribbon is tensioned on the ribbon guide roller, and the peeling roller is in pressure contact with the carbon surface of the ribbon to tension the ribbon in a direction away from the print roller.

9. The thermal transfer printing apparatus according to claim 1 or 2, wherein the anti-sticking release layer covers the entire periphery of the guide sleeve, and the length of the guide sleeve is greater than the width of the thermal transfer ribbon.