CN209365664U - Thermal printer - Google Patents

Abstract

The utility model discloses a kind of thermal printers, the thermal printer includes printer body, the printer body includes the paper roll maintaining part for disposing temperature-sensitive paper roll, for conveying the delivery section of the heat-sensitive paper to be printed in temperature-sensitive paper roll, the printing portion that lettering for completing heat-sensitive paper to be printed acts and the paper outlet for providing the heat-sensitive paper printed, wherein, the printing portion includes thermal printing head and platen roller opposite to each other up and down, the thermal printing head is configured with protection department, the protection department is arranged to the surface that protection foreign matter contacts the heater of the thermal printing head.The thermal printer of the utility model is able to solve existing thermal printer due to the problem of lettering that foreign matter is attached on the heater of thermal printing head and is occurred is bad or even lettering localized loss.

Description

Thermal printer

Technical field

The utility model relates to the thermal printers that one kind can effectively avoid thermal printing head attachment foreign matter.

Background technique

Printer will appear such phenomenon: having foreign matter (such as dust, the impurity of larger particles) to be mixed into printer In the case of inside, foreign matter may be further attached on the functional parts of printer.By taking thermal printer as an example, there is one kind Such situation: foreign matter enters after the inside of printer, it is possible that foreign matter is attached to the fever of thermal printing head surface Phenomenon on body.

The heat that this phenomenon may stop print head to issue to a certain extent accurately and timely passes to be printed Heat-sensitive paper, so as to cause heat-sensitive paper to be printed lettering act after there is the bad phenomenon of lettering.Especially foreign matter Partial size it is larger in the case of, in some instances it may even be possible to there is the phenomenon that lettering localized loss.That is, foreign matter is entering printer If being attached on the heater of thermal printing head after internal, overall performance will affect, reduce user experience.

Therefore, the utility model needs a kind of new thermal printer to solve above-mentioned technical problem.

Utility model content

In view of above-mentioned technical problem, the purpose of this utility model is to provide a kind of thermal printers, it is intended to solve existing Thermal printer since the lettering that foreign matter is attached on the heater of thermal printing head and is occurred is bad or even lettering locally lacks The problem of mistake.

The utility model provides a kind of thermal printer, and the thermal printer includes printer body, the printing Machine ontology includes for disposing the paper roll maintaining part of temperature-sensitive paper roll, for conveying the defeated of the heat-sensitive paper to be printed in temperature-sensitive paper roll Send portion, the printing portion that the lettering for completing heat-sensitive paper to be printed acts and the paper for providing the heat-sensitive paper printed Outlet, wherein the printing portion includes thermal printing head and platen roller opposite to each other up and down, and the thermal printing head is configured with Protection department, the protection department are arranged to the surface that protection foreign matter contacts the heater of the thermal printing head.

Since foreign matter is mixed into there are many paths of the inside of thermal printer, it is difficult to avoid this completely from source The generation of phenomenon, in consideration of it, setting of the utility model by protection department, prevents foreign matter attached after the inside for being mixed into printer In thermal printing head heater surface.It realizes that the principle of the function may is that periodically to remove such as protection department to have adhered to The foreign matter on the surface of heater or behind the inside that foreign matter enters printer i.e. stop foreign matter reach heater surface.

It can back and forth be moved with reciprocating device as a kind of the former implementation may is that in the configuration of the inside of printer The execution end of motivation structure is the structure that can remove foreign matter from the surface of heater, such as execute end be can by foreign matter with It is adhered thereto or clean foreign matter.So, in the case of needing to remove foreign matter, keep mechanism in running order, End is executed directly to contact with the surface of heater, lettering operation at this time can not usually carry out, and different woth no need to remove In the case of object, mechanism is made to be in off working state, i.e. execution end is exited to the position for not influencing normal lettering work.Example Property, execute end be it is extended to or the surface of retracting heater hairbrush, and extend out to the table of heater in hairbrush When face, hairbrush is radial to be contacted with the surface of heater, by the foreign matter on the surface of heater by way of rotating hairbrush It cleans.And a kind of implementation of the latter may is that under the premise of not influencing the movement of normal lettering, configure for thermal printing head One cover to prevent sundries from contacting as few as possible with the surface of heater, as the outer surface of cover be with adsorption capacity Face.

It is understood that protection department realizes the above two principle of its function and the specific structure of every kind of principle is Illustrative description, does not cause the unnecessary restriction to the utility model.Under the premise of without departing from the principle of the invention, this Field technical staff can reasonably be adjusted according to realization principle and its concrete form of the specific product form to protection department It is whole, it is beaten as long as can guarantee that the setting of protection department does not interfere the normal operation of printer and foreign matter can be stopped to rest on temperature-sensitive Print the surface of the heater of head.

For above-mentioned thermal printer, in a kind of possible embodiment, the protection department is along the discharge side of heat-sensitive paper To the position for being set to the close upstream of the thermal printing head, to stop the discharge direction along heat-sensitive paper to enter printer Foreign matter close to the surface of the heater.

Since foreign matter is usually the inside for entering printer along the discharge direction of heat-sensitive paper.This is because on the one hand this A direction have heat-sensitive paper movement therefore be easy " starting " foreign matter movement, on the other hand due to the power-assisted of delivery section make it is different By " guiding " to the position of thermal printing head after the mobile quilt " starting " of object.In consideration of it, by being arranged protection department in temperature-sensitive Print head, can straight tackling most foreign matter mobile towards the surface of the heater close to the position of upstream. After stopping, foreign matter can be fallen from protection department, can also be attached to protection department.

In addition, stopping mode of the foreign matter close to the surface of heater can at any time compared to the protection method periodically removed More reliably guarantee lettering quality.And the protection method periodically removed usually requires to execute end in working condition and non-work Make to switch between state, blocking type protection also saves the mechanism for state switching, therefore simplifies structure.

For above-mentioned thermal printer, in a kind of possible embodiment, the protection department is at least one blocking Face, the foreign matter that the blocking surface can stop the discharge direction along heat-sensitive paper to enter printer in a manner of removing or adhere to lean on The surface of the nearly heater.

Setting in this way, for may be close to the foreign matter on the surface of the heater, or by means of protection The blocking surface in portion is by it from may perhaps remove in structure close to the path on the surface of the heater or directly adhere to it In on blocking surface, to ensure that the cleanliness on the surface of heater, that is, appearance is avoided since foreign matter is attached to heater The impacted phenomenon of lettering quality caused by surface.

Illustratively, the mode of removal may is that foreign matter has necessary portion in the path close to the surface of heater Part, protection department can be removed foreign matter by way of directly cleaning the component；Protection department is in foreign matter close to the surface of heater Path in directly stopped then foreign matter and fall to the lower inside of printer.Directly stop to adhere to necessary component Mode may is that blocking surface be capable of adsorbing contaminant structure (reticular structure, hair flocculent structure, surface have it is rough Gully or texture etc.) or material (such as active carbon silica gel) etc..

For above-mentioned thermal printer, in a kind of possible embodiment, the protection department includes guard member, described Guard member is located at the top of heat-sensitive paper to be printed or contacts with heat-sensitive paper to be printed, to be printed to be attached to The upper surface of heat-sensitive paper and/or the foreign matter above upper surface remove.

For above-mentioned thermal printer, in a kind of possible embodiment, the guard member has brush-like structure, and The brush-like structure is contacted with heat-sensitive paper to be printed.

For above-mentioned thermal printer, in a kind of possible embodiment, the guard member is located at heat to be printed The top of quick paper and gap between the two are not more than preset value, and the guard member is in the side close to heat-sensitive paper to be printed Portion has the adsorption structure of adsorption of foreign matter.

Since the heater of thermal printing head is located at the top of heat-sensitive paper, in heat-sensitive paper during transported, The foreign matter that is positioned above and the foreign matter for having attached to its upper surface are likely to be attached to the surface of heater, therefore logical It crosses and configures guard member in the top of heat-sensitive paper, the position that can especially contact with heat-sensitive paper can be effectively by foreign matter It removes, guarantees lettering quality.

For above-mentioned thermal printer, in a kind of possible embodiment, the protection department includes guard member, described Guard member is plate structure, and the plate structure is in foreign matter close to the fever in the side surface for leaning against the heater In the path on the surface of body, wherein the side surface for leaning against the heater is to be capable of the structure of adsorption of foreign matter or by energy The material of enough adsorption of foreign matter is made；Or the side surface for leaning against the heater is provided with adsorption layer, the adsorption layer is The structure or the material by capableing of adsorption of foreign matter for capableing of adsorption of foreign matter are made.

Setting in this way is directly stopped by protective plate or is adsorbed in the way that foreign matter leads to the surface of heater. Preferably, the property of can choose ground periodic cleaning protective plate.

For above-mentioned thermal printer, in a kind of possible embodiment, the lower end of the protective plate is located to be printed Heat-sensitive paper top and therebetween have gap.

Setting in this way is protected under the premise of to sundries can effectively stop by the surface of plate structure The discharge smoothness of heat-sensitive paper to be printed is demonstrate,proved.

For above-mentioned thermal printer, in a kind of possible embodiment, institute is fixed in the upper end of the plate structure Printer body is stated, the lower end of the protective plate is obliquely installed in the path in a manner of far from the heater, described The uper side surface of plate structure is provided with adsorption layer.

By being obliquely installed, foreign matter more enough contact surfaces with the adsorption layer of protective plate in the way on the surface for leading to heater Product increases, therefore more fully realizes the absorption to foreign matter, ensure that lettering quality.

For above-mentioned thermal printer, in a kind of possible embodiment, the guard member is removably It is set to the printer body.

Setting in this way, especially for absorption type protection protection department for, can be convenient periodic cleaning or Guard member is directly replaced, it is easy to maintenance, it also avoids after foreign matter due to adhering on guard member falls off from guard member Into the surface of heater.

According to below with reference to the accompanying drawings to detailed description of illustrative embodiments, the other feature and aspect of the utility model will It becomes apparent.

Detailed description of the invention

The attached drawing for constituting a part of the utility model is used to provide a further understanding of the present invention, this is practical new The illustrative embodiments and their description of type are not constituteed improper limits to the present invention for explaining the utility model.? In attached drawing:

Figure 1A shows a kind of structural schematic diagram of the thermal printer of the utility model under no paper-like state；

Figure 1B shows the structural schematic diagram of protection department in a kind of thermal printer of the utility model；

Fig. 2A shows a kind of structural schematic diagram of the thermal printer of embodiment of the utility model in the case where there is paper-like state；

Fig. 2 B shows a kind of shape of the brush head of the thermal printer of embodiment and heat-sensitive paper to be printed of the utility model State schematic diagram；And

Fig. 3 shows a kind of partial sectional view of the thermal printer of embodiment of the utility model.

Reference signs list

1 printing portion

11 thermal printing heads

111 heaters

12 platen rollers

21 guide rollers

22 brackets

3 guard members

31 matrixes

32 brush heads

4 heat-sensitive papers to be printed

Specific embodiment

The various exemplary embodiments, feature and aspect of the utility model are described in detail below with reference to attached drawing.In attached drawing Identical appended drawing reference indicates element functionally identical or similar.Although the various aspects of embodiment are shown in the attached drawings, It is unless otherwise indicated, it is not necessary to attached drawing drawn to scale.Dedicated word " exemplary ", which means, herein " is used as example, embodiment Or illustrative ".Here as any embodiment illustrated by " exemplary " should not necessarily be construed as preferred or advantageous over other embodiments.

It should be noted that term " on ", "lower", "left", "right", "inner", "outside" etc. in the description of the present invention, The direction of instruction or the term of positional relationship are direction based on the figure or positional relationship, this, which is intended merely to facilitate, retouches It states, rather than indication or suggestion described device or element must have a particular orientation, be constructed and operated in a specific orientation, because This should not be understood as limiting the present invention.In addition, term " first ", " second ", " third " are used for description purposes only, and It cannot be understood as indicating or implying relative importance.

In addition it is also necessary to explanation, in the description of the present invention, unless otherwise clearly defined and limited, art Language " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or It is integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, it can also be by between intermediary It connects connected, can be the connection inside two elements.To those skilled in the art, can understand as the case may be above-mentioned The concrete meaning of term in the present invention.

It will be apparent to a skilled person that in the absence of conflict, the spy in the embodiments of the present invention Sign can be combined with each other.The utility model will be described in detail below with reference to the accompanying drawings and embodiments.

In order to which the utility model is better described, numerous details is given in specific embodiment below. It will be appreciated by those skilled in the art that without certain details, the utility model equally be can be implemented.In some instances, Method well known to those skilled in the art, means and element are not described in detail, in order to highlight the master of the utility model Purport.

A, Figure 1B and Fig. 3 referring to Fig.1, Figure 1A show a kind of structural schematic diagram of thermal printer of the utility model, figure 1B shows the structural schematic diagram of protection department in a kind of thermal printer of the utility model, and Fig. 3 shows the utility model one kind The partial sectional view of the thermal printer of embodiment.As shown in Figure 1A, Figure 1B and Fig. 3, thermal printer includes printer body, Printer body generally includes shell and can be relative to the lid that shell turns on or off.Thermal printer is configured with to twine The paper roll of the thermal printing paper for the non-lettering collected around shape structure, paper roll are placed in printer body by paper roll maintaining part. Printer body mainly includes for disposing the paper roll maintaining part of paper roll, conveying for completing heat-sensitive paper to be printed in paper roll Paper roll delivery section and the printing portion printed for completing heat-sensitive paper to be printed.

Such as, paper maintaining part is formed with accommodating chamber, is provided with shaft in accommodating chamber, shaft through paper roll core, and And the internal diameter of paper roll is greater than the outer diameter of shaft, paper roll can in this way move freely around the shaft to complete the offer of heat-sensitive paper. Delivery section mainly includes providing the driving motor of power and along the opposed active conveying roller of the discharge direction of heat-sensitive paper (with driving Motor is connected) and driven conveying roller, heat-sensitive paper to be printed is folded between active conveying roller and driven conveying roller to realize It is moved along discharge direction.Printing portion 1 includes mainly thermal printing head 11 opposite to each other up and down and platen roller 12, is being printed Cheng Zhong, when stretching out the heat-sensitive paper of paper roll and being transported to the top of platen roller along discharge direction, the control module of thermal printer Thermal printing head is acted, specifically, pushes thermal printing head to the platen roller rotated to make heater It can be contacted with heat-sensitive paper to be printed, to complete lettering movement.It, can be in paper in order to keep the conveying planarization of heat-sensitive paper Guide roller 21 can be set between volume and active conveying roller or between active conveying roller and platen roller, as guide roller 21 passes through Bracket 22 is fixed on shell.Thermal printing head 11 is configured with protection department 3, and protection department 3 mainly includes the matrix for being fixed on bracket 22 31 and it is provided with the downward brush head 32 in 31 left end head of matrix.Later as the rotation of platen roller can make to complete lettering The outside of heat-sensitive paper discharge thermal printer.Specifically, printer body is (usual along the downstream of the discharge direction of heat-sensitive paper It is on shell) it is provided with paper outlet, the heat-sensitive paper printed is delivered to the outer of thermal printer by paper outlet Portion.

By taking heat-sensitive paper is label paper as an example, thermal printer is in paper outlet and (thermal printing head, platen roller) institute Cutting part is provided between the print position at place, cutting part is mainly used for cutting off the label paper printed, have been turned off later Label paper is provided by paper outlet.Cutting part mainly include along label paper width direction (i.e. with the discharge side of heat-sensitive paper To perpendicular direction) move back and forth cutter and corresponding control module, label paper complete lettering movement after, cut Cutter completes feed movement, and by the partial cut of lettering, withdrawing in face of normal lettering operation later to cause to interfere, so Circulation.

Fig. 2A shows a kind of structural schematic diagram of the thermal printer of embodiment of the utility model in the case where there is paper-like state, figure 2B shows a kind of status diagram of the brush head of the thermal printer of embodiment and heat-sensitive paper to be printed of the utility model.Such as Shown in Fig. 2A and Fig. 2 B and according to the orientation in Fig. 2A, the inclined plate structure of the substantially right-to-left of matrix 31, plate structure Right end be fixed on bracket 22, the left end of plate structure is provided with the brush head 32 as brush-like structure.In the process of lettering operation In, brush head 32 is located at the heater 111 of the lower section of thermal printing head 11 close to the position on right side, in such as dust and other impurities from dextrad The upper surface of heat-sensitive paper 4 to be printed is dropped down onto behind the left inside into printer body, and if this part dust is expected up to heater 111, the position of brush head 32 is the only way which must be passed, is contacted at this time due to brush head 32 with the upper surface of heat-sensitive paper 4 to be printed, Heat-sensitive paper 4 to be printed is delivered to during thermal printing head 11 and the corresponding print position of platen roller 12 can will be miscellaneous Object easily removes, and is attached on heater 111 so as to avoid dust, ensure that the lettering quality of thermal printer.

So far, it has been combined preferred embodiment shown in the drawings and describes the technical solution of the utility model, still, this Field technical staff is it is easily understood that the above is only the preferred embodiment of the utility model only, not to limit The utility model, within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on should all It is included within the scope of protection of this utility model.

Claims (10)

1. a kind of thermal printer, which is characterized in that the thermal printer includes printer body, the printer body packet It includes the paper roll maintaining part for disposing temperature-sensitive paper roll, the delivery section for conveying the heat-sensitive paper to be printed in temperature-sensitive paper roll, use In the printing portion for the lettering movement for completing heat-sensitive paper to be printed and paper outlet for providing the heat-sensitive paper printed,

Wherein, the printing portion includes thermal printing head and platen roller opposite to each other up and down, and the thermal printing head is configured with anti- Shield portion, the protection department are arranged to the surface that protection foreign matter contacts the heater of the thermal printing head.

2. thermal printer according to claim 1, which is characterized in that the protection department is set along the discharge direction of heat-sensitive paper The thermal printing head is placed in close to the position of upstream, to stop the discharge direction along heat-sensitive paper to enter the different of printer Object is close to the surface of the heater.

3. thermal printer according to claim 2, which is characterized in that the protection department has at least one blocking surface, The foreign matter that the blocking surface can stop the discharge direction along heat-sensitive paper to enter printer in a manner of removing or adhere to is close The surface of the heater.

4. thermal printer according to claim 3, which is characterized in that the protection department includes guard member, described anti- Shield component is located at the top of heat-sensitive paper to be printed or contacts with heat-sensitive paper to be printed, to be attached to heat to be printed The upper surface of quick paper and/or the foreign matter above upper surface remove.

5. thermal printer according to claim 4, which is characterized in that the guard member has brush-like structure, and institute Brush-like structure is stated to contact with heat-sensitive paper to be printed.

6. thermal printer according to claim 4, which is characterized in that the guard member is located at heat-sensitive paper to be printed Top and gap between the two be not more than preset value, and the guard member has in the side close to heat-sensitive paper to be printed There is the adsorption structure of adsorption of foreign matter.

7. thermal printer according to claim 3, which is characterized in that the protection department includes guard member, described anti- Shield component is plate structure, and the plate structure is in foreign matter close to the heater in the side surface for leaning against the heater Surface path in,

Wherein, which is the structure for capableing of adsorption of foreign matter or the material by capableing of adsorption of foreign matter Matter is made；Or the side surface for leaning against the heater is provided with adsorption layer, the adsorption layer is to be capable of adsorption of foreign matter Structure or the material by capableing of adsorption of foreign matter are made.

8. thermal printer according to claim 7, which is characterized in that the lower end of the protective plate is located at heat to be printed The top of quick paper and therebetween have gap.

9. thermal printer according to claim 7, which is characterized in that described beat is fixed in the upper end of the plate structure The lower end of print machine ontology, the protective plate is obliquely installed in the path in a manner of far from the heater, the plate The uper side surface of structure is provided with adsorption layer.

10. the thermal printer according to any one of claim 4 to 9, which is characterized in that the guard member is with removable The mode unloaded is set to the printer body.