CN205033738U - Double -sided printer - Google Patents

Abstract

The utility model discloses a double-sided printer, which can realize double-sided printing without turning over the medium. The double-sided printer comprises: a housing with a built-in abutment with a main body; a ribbon box located above the abutment , with a box body for storing the ribbon and a ribbon protection sheet for supporting and protecting the ribbon, the ribbon protection sheet is arranged on the top of the cantilever under both sides of the box body; the printing part is located at the base Between the table and the box body, it is used to print the conveyed medium; the upper guide sheet has an opening for printing in the center; Or equal to the length of the main body of the abutment, which is used to guide the conveyed medium to pass through.

Description

duplex printer

technical field

The utility model relates to a double-sided printer.

Background technique

Currently, with a typical POS printer, checks are printed on the front and back. The printing on the back is for signature purposes. In order to be able to print on the back, POS printers are generally equipped with a mechanical device that can automatically flip the check. Alternatively, some printers have duplex printheads, one at the front and one at the back, to enable double-sided printing.

However, these existing technologies have the following deficiencies:

Due to the need to achieve double-sided printing, the associated mechanical devices are generally more complicated and expensive. And because of the extra time it takes to flip a check, throughput often suffers as well.

Contents of the invention

In view of the above technical problems, the purpose of this utility model is to provide a double-sided printer, which can realize double-sided printing without turning over the medium.

In the first aspect, the double-sided printer involved in the present invention includes: a housing with a built-in abutment with a main body; a ribbon box located above the abutment, with a box for accommodating a ribbon and a support for The ribbon protection sheet protecting the ribbon, the ribbon protection sheet is arranged on the top of the cantilever at the bottom of both sides of the box body; the printing part is located between the base and the box body, used for printing and conveying medium; an upper guide piece, with an opening for printing in the center; and a lower guide part, embedded in the main body of the abutment in the length direction, having a length greater than or equal to the main body of the abutment, for guiding conveyance to the passage of the medium.

Further, in the above double-sided printer, the main body is in the shape of a cuboid, and the upper guide piece is in the shape of a strip.

Further, in the above double-sided printer, the lower guide part has a protruding part protruding from the surface of the main body, the top end of the protruding part has a plane, and there is a long opening in the center of the plane along the length direction, the The protruding part is provided with a through slit in the front face between the plane and the main body surface, the slit can pass through the medium, and the elongated opening communicates with the slit.

Further, in the above double-sided printer, the elongated opening is rectangular in plan view, and the slit is rectangular in front view.

Further, in the above double-sided printer, the bottom surface of the slit is at the same level as the surface of the main body.

Further, in the above double-sided printer, the lower guide member is located at the center of the base main body in the width direction.

Further, in the above-mentioned double-sided printer, when the printing part prints on the front side of the medium, the upper guide sheet is located on the ribbon protection sheet, and the printing part uses the upper guide sheet to The medium inserted into the gap is printed.

Furthermore, in the above-mentioned double-sided printer, when the printing part prints on the back of the medium, the medium is located between the printing part and the upper guide sheet, and the printing part directly prints the to print on the above media.

Further, in the above-mentioned double-sided printer, the printing part performs printing in a reverse mode different from the front printing mode during the process of printing the back side of the medium.

Further, in the above double-sided printer, the printing unit is a dot matrix printing head.

According to the double-sided printer of the present invention, the lower guide part is embedded in the main body of the abutment, and the upper guide piece is placed on the ribbon protection piece, so that double-sided printing can be realized on the medium without turning over the medium. Since the two-sided printing is performed on the medium without turning over by setting simple components, the cost can be reduced, the printing time can be saved, and the printing throughput can be improved.

Description of drawings

The accompanying drawings constituting a part of the utility model are used to provide a further understanding of the utility model, and the schematic embodiments of the utility model and their descriptions are used to explain the utility model, and do not constitute improper limitations to the utility model. In the attached picture:

Fig. 1 a is a perspective view showing the configuration of main parts for double-sided printing in a duplex printer, and Fig. 1 b is a front view showing the configuration of main parts for double-sided printing in a duplex printer;

FIG. 2 is a cross-sectional view showing the arrangement positions of main parts for realizing double-sided printing. ;

Fig. 3 is a diagram illustrating a base on which an upper guide piece and a lower guide member are placed;

Fig. 4a is a perspective view showing that a check is inserted into the gap when the front side is printed, and Fig. 4b is a cross-sectional view showing that the check is inserted into the gap when the front side is printed;

Figure 5a is a perspective view showing that the check is located between the dot matrix print head and the upper guide sheet when the check is printed on the back, and Figure 5b is a cross-sectional view showing that the check is located between the dot matrix print head and the upper guide sheet when the check is printed on the back; and

Fig. 6a is a perspective view showing the configuration of main parts of a conventional double-sided printer, and Fig. 6b is a front view showing the configuration of main parts of a conventional double-sided printer.

Explanation of reference signs

10, 100 ribbon box 10a, 100a box body

11, 12, 110, 120 cantilever 13, 130 ribbon protection sheet

20, 200 dot matrix print head (printing part) 30 upper guide sheet

31 opening 40 lower guide part

41 protrusion 42 slit

43 strip opening 50, 400 abutment

50a, 400a main body 300 guide piece

A, B check

detailed description

It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The utility model will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

Hereinafter, the duplex printer of this embodiment will be described with reference to the drawings.

Fig. 1a is a perspective view showing the configuration of main parts for double-sided printing in the double-sided printer, and Fig. 1b is a front view showing the configuration of main parts for double-sided printing in the double-sided printer. As shown in FIGS. 1 a and 1 b , the double-sided printer includes an unshown casing, an ink ribbon cassette 10 , a dot matrix print head (printing unit) 20 , an upper guide piece 30 and a lower guide member 40 .

The housing houses a base 50 having a main body 50a. The ribbon cassette 10 is located above the base 50 and has a box body 10 a for storing the ribbon and a ribbon protection sheet 13 for supporting and protecting the ribbon. The ribbon protection sheet 13 is arranged across the top ends of the cantilever arms 11 and 12 extending downward from both sides of the box body 10a. The dot matrix printing head 20 is located between the box body 10 a and the base 50 (ribbon protection sheet 13 ), and is used for printing the delivered check (medium) A. The upper guide sheet 30 has an opening 31 for printing at its center. In the following description, since the ribbon protection sheet 13 supports and protects the ribbon, when referring to the ribbon protection sheet 13 below, it usually refers to the situation that there is a ribbon on it.

The lower guide part 40 is embedded in the center of the main body 50a in the length direction of the base 50, has a length greater than or equal to the length of the base main body 50a, and is used for guiding the conveyed check A to pass. In this embodiment, the two ends of the lower guide member 40 slightly protrude from the two ends of the main body 50a.

FIG. 2 is a cross-sectional view showing the arrangement positions of main parts for realizing double-sided printing. As shown in Figure 2, the arrangement sequence from top to bottom of each main part is the dot matrix print head 20, the upper guide sheet 30, the ribbon protection sheet 13 (ribbon), the lower guide member 40 and the base 50 (main body). 50a). Furthermore, as can be seen from FIG. 2 , the lower guide member 40 further has a rectangular slit (slit) 42 (details will be described later) in a front view.

FIG. 3 is a diagram illustrating a base 50 on which the upper guide piece 30 and the lower guide member 40 are placed. As shown in FIG. 3 , the base 50 is chamfered on both sides along the length direction of the surface of the main body 50 a for the convenience of transporting the check A. The lower guide member 40 is embedded in the main body 50a along the length direction of the main body 50a of the base 50, and is located in the center of the width direction. The upper guide piece 30 is placed on the lower guide member 40, and its width is slightly smaller than that of the lower guide member 40 width. The lower guide member 40 has a protrusion 41 protruding from the surface of the main body 50a.

As can be seen from FIG. 3 , the center of the upper guide piece 30 has a diamond-shaped opening 31 , and the top end of the protruding portion 41 has a plane, and the center of the plane has a rectangular opening 43 in plan view. The protruding part 41 is provided with a through gap 42 in the front between the plane and the surface of the main body 50a. The bottom surface of the slot 42 is at the same level as the surface of the main body 50a, and can pass through the check A (see FIGS. 4a and 4b). Also, the elongated opening 43 communicates with the slit 42 . The opening length of the elongated opening 43 is greater than the printing range of the dot matrix printing head 20 . In this embodiment, the left and right ends of the elongated opening 43 are close to the two ends of the lower guide member 40 , and are approximately equal in length to the slot 42 .

In addition, the upper guide sheet 30 has the function of not only guiding the passing of the check A, but also protecting the check A through the opening 31 from being contaminated by ribbon ink during printing.

FIG. 4a is a perspective view showing that a check A is inserted into the slit 42 when the front side is printed, and FIG. 4b is a cross-sectional view showing that the check A is inserted into the slit 42 when the front side is printed. As shown in Figure 4a and Figure 4b, when the dot matrix print head 20 is printing the front side of the check A, the upper guide sheet 30 is located on the ribbon protection sheet 13, and the dot matrix print head 20 is inserted into the gap through the upper guide sheet 13. Check A in 42 is printed in front side print mode. In this way, the dot matrix printing head 20 can print the check A on the front side.

Figure 5a is a perspective view showing that check A is located between the dot matrix printing head 20 and the upper guide sheet 30 when printing on the back side, and Figure 5b is a perspective view showing that check A is located between the dot matrix printing head 20 and the upper guiding sheet 30 when printing on the back side Sectional view. As shown in Figure 5a and Figure 5b, when the dot matrix printing head 20 is printing the back of the check A, the check A is located between the dot matrix printing head 20 and the upper guide sheet 30, and the dot matrix printing head 20 directly contacts the check A for printing. Print. It is worth noting that since the dot matrix printing head 20 prints the back of the check A, images, characters, etc. are printed in a reverse mode different from the front printing mode. In this way, the dot matrix printing head 20 can print the check A on the back without flipping the check A.

Fig. 6a is a perspective view showing the configuration of main parts of a conventional double-sided printer, and Fig. 6b is a front view showing the configuration of main parts of a conventional double-sided printer. As shown in FIGS. 6 a and 6 b , the double-sided printer includes an unshown casing, a ribbon cassette 100 , a dot matrix print head (printing unit) 200 , a guide sheet 300 and a base 400 .

The housing houses a base 400 having a main body 400a. The ribbon cassette 100 is located above the base 400 and has a cassette body 100 a for storing the ribbon and a ribbon protection sheet 130 for supporting and protecting the ribbon. The ribbon protection sheet 130 is arranged across the top ends of the cantilever arms 110 , 120 extending downward from both sides of the box body 100 a. The dot matrix printing head 200 is located between the box body 100 a and the base 400 (ribbon protection sheet 130 ), and is used for printing the delivered check (medium) B. The guide sheet 300 has an unillustrated opening at its center for printing, and is positioned between the check B (base 400 ) and the ribbon guard sheet 130 for guiding the check B and preventing the check B from being contaminated by ink from the ribbon. The main body 400a is in the shape of a cuboid, and the guide piece 300 is in the shape of a long plate. It can be seen from Fig. 6a and Fig. 6b that since the base 400 is not provided with a lower guide member as in the embodiment of the present invention, it is usually necessary to provide a reversing device for the automatic reversing of the medium or to arrange two print heads to realize double-sided printing. . Because the reversing devices provided in existing double-sided printers are generally complicated and expensive, resulting in increased costs, and additional time is required for reversing the media, so the throughput is also affected.

In this embodiment, the main body 50a is in the shape of a cuboid, and the upper guide piece 30 is in the shape of a strip. But it is not limited thereto, as long as the shapes of the main body 50a and the upper guide sheet 30 do not affect printing, the shapes of these components are not limited.

In addition, in this embodiment, the opening 31 in the center of the upper guide piece 30 is a rhombus shape, but it is not limited thereto, such as a shape that does not affect printing and can prevent ribbon ink from contaminating the medium, such as a rectangle. unlimited.

In addition, in this embodiment, although the elongated opening 43 has a rectangular shape in plan view, it is not limited to this, and it is also possible to form strips from the left and right end surfaces of the elongated opening 43 in the longitudinal direction to the left and right respectively. The shape of the opening in radians.

In addition, in this embodiment, although the check A is used as an example for description, it may also be a receipt, paper, or the like.

According to the double-sided printer of the present invention, the lower guide part 40 is embedded in the main body 50a of the base 50, and the upper guide piece 30 is set on the ribbon protection piece 13, so that the medium can be double-sided without turning over the medium. side print. Since the two-sided printing is performed on the medium without turning over by setting simple components, the cost can be reduced, the printing time can be saved, and the printing throughput can be improved.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in the Within the protection scope of the present utility model.

Claims (10)

1. A duplex printer, characterized in that, comprising: a housing with a built-in abutment having a main body; The color ribbon box is located above the abutment, and has a box body for storing the color ribbon and a color ribbon protection sheet for supporting and protecting the color ribbon. The color ribbon protection sheet is arranged on both sides of the box body and cantilevered below on the top; a printing part, located between the abutment and the box body, for printing the conveyed medium; an upper guide sheet with an opening in the center for printing; and The lower guide part is embedded in the main body of the abutment in the length direction, has a length greater than or equal to the main body of the abutment, and is used for guiding the conveyed medium to pass through. 2. The duplex printer according to claim 1, characterized in that, The main body is in the shape of a cuboid, The upper guide piece is in the shape of a long strip. 3. The duplex printer according to claim 2, characterized in that, The lower guide part has a protrusion protruding from the surface of the main body, The top end of the protruding part has a plane, and the center of the plane has a long opening along the length direction, said protrusion is provided in the front face between said plane and said body surface with a through-slit through which said medium can pass, The elongated opening communicates with the slit. 4. The duplex printer according to claim 3, characterized in that, The strip opening is rectangular in plan view, The slit is rectangular in front view. 5. The duplex printer according to claim 4, characterized in that, The bottom surface of the slot is at the same level as the surface of the main body. 6. The duplex printer according to claim 5, characterized in that, The lower guide member is located at the center in the width direction of the abutment main body. 7. The duplex printer according to claim 6, characterized in that, When the printing part prints on the front side of the medium, the upper guide piece is located on the ribbon protection piece, and the printing part prints the medium inserted into the gap through the upper guide piece . 8. The duplex printer according to claim 6, characterized in that, When the printing part prints on the back of the medium, the medium is located between the printing part and the upper guide sheet, and the printing part directly prints on the medium. 9. The duplex printer according to claim 8, characterized in that, The printing unit performs printing in a reverse mode different from the front printing mode during back printing on the medium. 10. The double-sided printer according to any one of claims 1 to 9, characterized in that, The printing unit is a dot matrix printing head.