CN213861424U - POS printer - Google Patents

Abstract

The embodiment of the utility model provides a POS printer, including printer body and the printing portion that sets up in printer body, the printing portion includes and beats printer head, conveying roller, and the typewriter ribbon that waits to print and the paper that waits to print set up between beating printer head and conveying roller from top to bottom, still include typewriter ribbon guide part; the ribbon guide part comprises a ribbon shade, a shade frame and a retaining unit; the ink ribbon to be transferred is positioned above the paper to be printed in a manner of being inserted into the ink ribbon guide part; the ribbon mask has a transfer communicating structure allowing the print head to press the ribbon to be transferred onto the paper to be printed; the cover frame is movably arranged on the carrying frame of the printer body through the retaining unit. Through using above-mentioned POS printer, solve current POS printer to a certain extent and have the problem that the clearance narrowing between ribbon shade and the printer head that uses for a long time leads to the typewriter ribbon to be difficult to insert the ribbon shade, improve ribbon installation effectiveness.

Description

POS printer

Technical Field

The utility model relates to a POS printer.

Background

As shown in fig. 1 and 2 (fig. 1 is a schematic diagram of the relative position of a print head and a ribbon in a conventional POS printer; fig. 2 is a schematic diagram of the relative position of a print head and a ribbon mask in a conventional POS printer), most POS printers operate: on the one hand, the paper to be printed is conveyed between the print head 2' and the conveyor roller; on the other hand, after the tape cassette 1 ' is mounted, the ink ribbon 50 is transferred and printed on the paper by the print head 2 ' pressing the ink ribbon 50 above the paper between the print head 2 ' and the feed roller.

In general, the POS printer is provided with a ribbon mask 3 ', on which the ribbon 50 is inserted, and a transfer communicating structure is provided in the middle of the ribbon mask 3 ' so that the print head 2 ' transfers ink on the ribbon 50 to a paper to be printed.

However, current ribbon masks 3' are typically thin, downwardly recessed sheet metal structures; in the assembled state, the position of the printer is fixed. Therefore, after the ribbon mask 3 'is used for a long time, the elasticity becomes weak, and the ribbon mask 3' is deformed upward, so that the gap between the ribbon mask 3 'and the print head 2' becomes narrow.

Therefore, the conventional POS printer has a problem that the gap between the ribbon mask and the print head, which is used for a long time, is narrowed, so that the ribbon is difficult to be inserted into the ribbon mask.

SUMMERY OF THE UTILITY MODEL

In view of the above problem, the utility model aims at providing a POS printer through setting up the typewriter ribbon guide part, solves to a certain extent that current POS printer has the typewriter ribbon shade of long-time use and beats the problem that the clearance narrowing between the head leads to the typewriter ribbon to be difficult to insert the typewriter ribbon shade, improves typewriter ribbon installation effectiveness.

The utility model provides a POS printer, include: the printer comprises a printer body and a printing part arranged on the printer body, wherein the printing part comprises a printing head and a conveying roller, an ink ribbon to be printed and paper to be printed are arranged between the printing head and the conveying roller from top to bottom, and the printer further comprises an ink ribbon guide part; the ribbon guide part comprises a ribbon shade, a shade frame and a retaining unit; the ribbon to be transferred is positioned above the paper to be printed in a manner of being inserted into the ribbon guide; the ribbon mask is provided with a transfer communication structure which allows the printing head to press the ribbon to be transferred onto the paper to be printed; the cover frame is movably arranged on the carrying frame of the printer body through the retaining unit.

The mask frame can be freely rotatably mounted on the carrier of the printer body by the matching connection of the holding unit and the mask frame. When the ribbon mask deforms to narrow the gap between the ribbon mask and the printing head, the angle of the mask frame is effectively adjusted, so that the relative position of the ribbon mask and the printing head is changed, the distance between the ribbon mask and the printing head meets the minimum value of normal installation of the ribbon, the purpose of facilitating the installation of the ribbon is achieved, and the efficiency of ribbon installation is improved.

Further, in the POS printer described above, the holding unit protrudes from the mask frame in the vertical direction.

For the cover frame, the outstanding retaining unit that sets up can effectively avoid the possibility of card paper at the printing in-process, improves printing efficiency.

Further, in the POS printer, the ribbon guide further includes a support unit; the supporting unit is connected with the mask frame through the retaining unit; the supporting unit is connected with the printing body.

Through addding the supporting element, with the cooperation of holding unit, can further improve the flexibility that the mask frame was put up and is beaten printer head relative position, improve the work efficiency of typewriter ribbon installation.

Further, in the POS printer described above, the printing body includes a paper guide; the supporting unit is integrally connected with the paper guide part.

The supporting unit and the paper guide part which are connected integrally can optimize the space inside the printer body and improve the stability of the supporting unit.

Further, in the POS printer, the support unit includes a notch structure; the notch structure is disposed in a direction toward contact with the holding unit.

Through setting up the breach structure, when carrying out the typewriter ribbon installation, stop motion and entering when the shade frame removes this breach structure, the shade frame takes place the slope, is favorable to increasing the clearance of typewriter ribbon installation, lets the typewriter ribbon installation become easier.

Further, in the POS printer described above, the notch structure has a chamfer at a corner that contacts the holding unit.

Through setting up the chamfer, when carrying out reciprocating motion in the printing process, can effectively prevent that the holding element from being caught and taking place the card and hinder.

Further, in the POS printer, the notch structure is disposed in a middle of the paper guide portion.

The gap structure in the middle of the paper guide part can further optimize the internal space of the printer body, and is favorable for replacing the color band.

Further, in the POS printer, the mask frame is made of a plastic material; the ribbon mask is made of stainless steel.

The plastic mask frame is not easy to deform or damage locally when being operated improperly or touched carelessly by a user, so that the reliability of the mask frame can be effectively improved; the ribbon mask has little possibility of being touched or pressed, and the adoption of the stainless steel material can ensure the overall performance of the printer.

Further, in the POS printer, the mask frame is an annular structure; the ribbon mask is disposed in the annular structure.

By adopting the structure, unnecessary touch in the operation process can be avoided to a certain extent, and the safety in the operation process is improved.

Further, in the POS printer, the mask frame and the ribbon mask are in adhesive connection.

The mask frame and the ribbon mask are fixed in a bonding mode, the implementation process is simple, and the connection between the mask frame and the ribbon mask is firm.

The embodiment of the utility model provides a POS printer, including printer body and the printing portion that sets up in printer body, the printing portion includes and beats printer head, conveying roller, and the typewriter ribbon that waits to print and the paper that waits to print set up between beating printer head and conveying roller from top to bottom, still include typewriter ribbon guide part; the ribbon guide part comprises a ribbon shade, a shade frame and a retaining unit; the ink ribbon to be transferred is positioned above the paper to be printed in a manner of being inserted into the ink ribbon guide part; the ribbon mask has a transfer communicating structure allowing the print head to press the ribbon to be transferred onto the paper to be printed; the cover frame is movably arranged on the carrying frame of the printer body through the retaining unit. Through using above-mentioned POS printer, solve current POS printer to a certain extent and have the problem that the clearance narrowing between ribbon shade and the printer head that uses for a long time leads to the typewriter ribbon to be difficult to insert the ribbon shade, improve ribbon installation effectiveness.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

FIG. 1 is a schematic diagram of the relative positions of a print head and a ribbon in a conventional POS printer;

FIG. 2 is a schematic diagram of the relative positions of a print head and a ribbon mask in a conventional POS printer;

FIG. 3 is a schematic view of the ribbon mask and mask frame in accordance with an embodiment of the present invention;

FIG. 4 is a schematic diagram of the relative position of the pressing plate and the ribbon according to the embodiment of the present invention;

FIG. 5 is a diagram illustrating a relative position relationship between the supporting units according to an embodiment of the present invention;

fig. 6 is a state diagram of the gap structure of the supporting unit in the embodiment of the present invention;

fig. 7 is a state diagram of the gap structure entering the supporting unit in the embodiment of the present invention;

FIG. 8 is a schematic diagram of the position relationship of the FLIP mechanism in the embodiment of the present invention;

FIG. 9 is a position diagram of the carrying rack of the embodiment of the present invention when the FLIP mechanism is actuated;

fig. 10 is a view showing a position of a carriage when the tape cassette is mounted according to the embodiment of the present invention;

fig. 11A is a schematic view of the left side of the notch structure when the retaining unit and the mask frame reciprocate according to the embodiment of the present invention;

fig. 11B is a schematic view of the holding unit and the mask frame on the right side of the notch structure during the reciprocal movement of the embodiment of the present invention; and

fig. 12 is a schematic view of a notch structure of the supporting unit according to an embodiment of the present invention.

Description of the reference numerals

1' existing tape cassette

2' existing print head

3' existing ribbon mask

50 color ribbon

1 POS Printer

2 print head

3 color band shade

4 mask frame

5 pressing plate

6 support unit

7 holding unit

8 FLIP mechanism

9 conveying roller

10 carrying rack

11 overturning unit

12 gap structure

Detailed Description

In order to make the above objects, features and advantages of the present invention more obvious and understandable, the POS printer of the present invention is described in detail below.

Referring now to fig. 3-11, a preferred embodiment of the POS printer of the present invention is shown. Fig. 3 is a schematic diagram illustrating relative positions of a ribbon mask and a mask frame according to an embodiment of the present invention; FIG. 4 is a schematic diagram of the relative position of the pressing plate and the ribbon according to the embodiment of the present invention; FIG. 5 is a diagram illustrating a relative position relationship between the supporting units according to an embodiment of the present invention; fig. 6 is a state diagram of the gap structure of the supporting unit in the embodiment of the present invention; fig. 7 is a state diagram of the gap structure entering the supporting unit in the embodiment of the present invention; FIG. 8 is a schematic diagram of the position relationship of the FLIP mechanism in the embodiment of the present invention; FIG. 9 is a position diagram of the carrying rack of the embodiment of the present invention when the FLIP mechanism is actuated; fig. 10 is a view showing a position of a carriage when the tape cassette is mounted according to the embodiment of the present invention; fig. 11A is a schematic view of the left side of the notch structure when the retaining unit and the mask frame reciprocate according to the embodiment of the present invention; fig. 11B is a schematic view of the holding unit and the mask frame on the right side of the notch structure during the reciprocal movement of the embodiment of the present invention; fig. 12 is a schematic view of a notch structure of the supporting unit according to an embodiment of the present invention.

The utility model provides a POS printer 1, include: the printer comprises a printer body and a printing part arranged on the printer body, wherein the printing part comprises a printing head 2 and a conveying roller 9, an ink ribbon 50 to be printed and paper to be printed are arranged between the printing head 2 and the conveying roller 9 from top to bottom, and the printer further comprises an ink ribbon guide part; the ribbon guide part comprises a ribbon mask 3, a mask frame 4 and a holding unit 7; the ink ribbon 50 to be transferred is positioned above the paper to be printed in such a manner as to be inserted to the ribbon guide; the ribbon mask 3 has a transfer communicating structure that allows the print head 2 to press the ribbon 50 to be transferred onto the sheet to be printed; the mask holder 4 is movably mounted on a carriage 10 of the printer body via a holding unit 7.

The holder 10 is rotatably attached to the printer body by the engagement and connection of the holding unit 7 and the mask holder 4, so that the mask holder 4 can be freely rotated. When the ribbon mask 3 deforms to narrow the gap between the ribbon mask 3 and the print head 2, the angle of the mask frame 4 is effectively adjusted, so that the relative position of the ribbon mask 3 and the print head 2 is changed, the distance between the ribbon mask 3 and the print head 2 meets the minimum value of normal installation of the ribbon 50, the purpose of facilitating the installation of the ribbon 50 is achieved, and the installation efficiency of the ribbon 50 is improved.

Next, in the POS printer 1, the holding unit 7 protrudes from the mask frame 4 in the vertical direction.

For the cover frame 4, the holding unit 7 arranged in a protruding manner can effectively avoid paper jam and improve printing efficiency in the printing process.

Further, in the POS printer 1, the ribbon guide portion further includes a support unit 6; the supporting unit 6 is connected with the mask frame 4 through a holding unit 7; the supporting unit 6 is connected with the printing body.

By adding the supporting unit 6 and matching with the holding unit 7, the flexibility of the relative position of the mask frame 4 and the printing head 2 can be further improved, and the working efficiency of the installation of the color ribbon 50 can be improved.

In the POS printer 1, the printing body includes a paper guide; the supporting unit 6 is integrally connected to the paper guide.

The support unit 6 and the paper guide portion which are integrally connected can optimize the space inside the printer body and improve the stability of the support unit 6.

In the POS printer 1, the support unit 6 includes the notch structure 12; the notch structure 12 is provided in a direction toward contact with the holding unit 7.

Through setting up breach structure 12, when carrying out the installation of typewriter ribbon 50, stop motion and entering when the shade frame 4 moves this breach structure 12, the shade frame 4 takes place the slope, is favorable to increasing the clearance of typewriter ribbon 50 installation, lets typewriter ribbon 50 install and becomes easier.

Further, in the POS printer 1 described above, the notch structure 12 has a chamfer at the corner that contacts the holding unit 7.

By providing the chamfer, when reciprocating in the printing process, the holding unit 7 can be effectively prevented from being hooked to cause jamming.

Meanwhile, in the POS printer 1 described above, the notch structure 12 is provided in the middle of the paper guide.

The gap structure 12 in the middle of the paper guide part can further optimize the internal space of the printer body, which is beneficial to the replacement of the color ribbon 50.

In addition, in the POS printer 1, the mask frame 4 is made of plastic; the ribbon mask 3 is made of stainless steel.

The mask frame 4 made of plastic is not easy to deform or damage locally when being operated improperly or touched carelessly by a user, so that the reliability of the mask frame 4 can be effectively improved; the ribbon mask 3 is hardly touched or pressed, and the use of a stainless steel material can ensure the overall performance of the printer.

Furthermore, in the POS printer 1, the mask frame 4 has an annular structure; the ribbon mask 3 is disposed in the ring structure.

By adopting the structure, unnecessary touch in the operation process can be avoided to a certain extent, and the safety in the operation process is improved.

In the POS printer 1, the mask holder 4 and the ribbon mask 3 are bonded to each other.

The mask frame 4 and the ribbon mask 3 are fixed in a bonding mode, the implementation process is simple, and the connection between the mask frame and the ribbon mask is firm.

Referring again to fig. 3 to 12, in actual operation:

the mask holder 4 is rotatably held on a carriage 10 on which the print head 2 is mounted. When the ribbon 50 is inserted, the mask frame 4 is positioned downward by its own weight as the platen 5 descends. Therefore, the gap is opened from the print head 2, and the ink ribbon 50 is easily inserted. The mask frame 4 is made of plastic material, the mask frame 4 is always in downward bias, the stainless ribbon mask 3 is pasted, and the whole is not easy to be damaged.

In addition, a support unit 6 is provided behind the mask holder 4. The supporting unit 6 is integrated with the sheet guide. In normal printing, the mask holder 4 is held by the holding unit 7 protruding from the mask holder 4. Therefore, in the POS printer 1 having the FLIP mechanism 8 (paper reversing mechanism) mounted on the front side, the feeder roller, that is, the feed roller 9 is kept clamped all the time after the platen 5 is raised, and the paper is once separated from the printing unit, reversed by the reversing unit 11, and then re-entered (re-entered). At this time, the mask frame 4 is inclined by its own weight, and when the cover frame comes into contact with the platen 5 which is always in the raised state, the leading end of the sheet may be positioned near the mask frame 4 and a jam may occur, but since the holding unit 7 has a certain gap from the platen 5, the jam does not occur.

When the FLIP mechanism 8 (sheet inverting mechanism) is operated, the mask holder 4 is in a supported state. In the tape replacement position shown in fig. 10, the holding unit 7 is easily accessible, since the support unit 6 has a notch structure 12, i.e. a portion is cut away. Therefore, when the platen 5 is lowered, as shown in fig. 7, the mask frame 4 is inclined, and the ink ribbon 50 is easily mounted.

Fig. 11A is a schematic view of the holding unit and the mask frame in a state of being located on the left side of the notch structure 12 when they reciprocate in the embodiment of the present invention; fig. 11B is a schematic view of the holding unit and the mask frame on the right side of the notch structure 12 during the reciprocating motion of the embodiment of the present invention. Fig. 12 is a schematic view of a notch structure of the supporting unit according to an embodiment of the present invention.

As shown in fig. 12, the notch structure 12 of the supporting unit 6 reciprocates left and right during printing, and returns to its original position immediately adjacent to the notch structure 12. Furthermore, the notch structure 12 is not hooked up because it has been chamfered. Since the mask frame 4 stops at the position where the ink ribbon 50 enters the notch structure 12 when the ink ribbon 50 is attached, the ink ribbon 50 can be smoothly attached.

With such a configuration, the mountability of the ink ribbon 50 and the paper feed performance of the FLIP mechanism 8 (paper reversing mechanism) can be improved.

The embodiment of the utility model provides a POS printer, including printer body and the printing portion who sets up in printer body, the printing portion includes and beats printer head, conveying roller, and the typewriter ribbon that waits to print and the paper that waits to print set up between beating printer head and conveying roller from top to bottom, still include typewriter ribbon guide part; the ribbon guide part comprises a ribbon shade, a shade frame and a retaining unit; the ink ribbon to be transferred is positioned above the paper to be printed in a manner of being inserted into the ink ribbon guide part; the ribbon mask has a transfer communicating structure allowing the print head to press the ribbon to be transferred onto the paper to be printed; the cover frame is movably arranged on the carrying frame of the printer body through the retaining unit. Through using above-mentioned POS printer, solve current POS printer to a certain extent and have the problem that the clearance narrowing between ribbon shade and the printer head that uses for a long time leads to the typewriter ribbon to be difficult to insert the ribbon shade, improve ribbon installation effectiveness.

In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second", etc. 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. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the specification of the present invention, a large number of specific details are explained. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: it is also possible to modify the solutions described in the previous embodiments or to substitute some or all of them with equivalents. Such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims (10)

1. A POS printer, comprising: a printer body and a printing part arranged on the printer body, wherein the printing part comprises a printing head and a conveying roller, a ribbon to be printed and paper to be printed are arranged between the printing head and the conveying roller from top to bottom,

also includes a ribbon guide;

the ribbon guide part comprises a ribbon shade, a shade frame and a retaining unit;

the ribbon to be transferred is positioned above the paper to be printed in a manner of being inserted into the ribbon guide;

the ribbon mask is provided with a transfer communication structure which allows the printing head to press the ribbon to be transferred onto the paper to be printed;

the cover frame is movably arranged on the carrying frame of the printer body through the retaining unit.

2. The POS printer of claim 1,

the holding unit protrudes from the mask frame in a vertical direction.

3. The POS printer of claim 2,

the ribbon guide further includes a support unit;

the supporting unit is connected with the mask frame through the retaining unit;

the supporting unit is connected with the printing body.

4. The POS printer of claim 3,

the printing body comprises a paper guide part;

the supporting unit is integrally connected with the paper guide part.

5. The POS printer of claim 4,

the support unit comprises a notch structure;

the notch structure is disposed in a direction toward contact with the holding unit.

6. The POS printer of claim 5, wherein the notched structure has a chamfer at a corner that contacts the holding unit.

7. The POS printer of claim 6, wherein the notch structure is disposed in a middle portion of the paper guide.

8. The POS printer of claim 7, wherein the mask frame is a plastic material;

the ribbon mask is made of stainless steel.

9. The POS printer of claim 8, wherein the mask frame is a ring-like structure;

the ribbon mask is disposed in the annular structure.

10. The POS printer of claim 9, wherein the mask holder and ribbon mask are adhesively connected.

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