JP3225749U - Portable price label printer - Google Patents

Abstract

An object of the present invention is to provide a portable price label printer that is compact and easily replaces thermal roll paper. The portable price label printer includes a housing and a lid, a paper cassette for storing a thermal roll paper is installed in an upper part of the housing, and a print head is installed in the paper cassette. A platen roller 6 that is in close contact with the print head is installed in the lid, and an electric motor 7 that rotates the platen roller via a transmission component is installed inside the housing. [Selection diagram] FIG.

Description

  The present invention belongs to the technical field of thermal printers, and more specifically, to a portable price label printer.

  Price label printers are widely used in fields such as supermarkets, department stores, communications, and hospitals, and print labels such as price labels using thermal roll paper as a print medium. The thermal paper is formed by sequentially overlapping a base paper, a primer layer, a thermal coating layer, and a protective layer. A continuous thermal paper is wound and formed into a thermal roll paper.

  When printing with a price label printer, the thermal paper is pulled out of the roller paper, passes between the print head and the platen roller that are placed in contact, the protective layer of the thermal paper comes into contact with the print head, and the thermal paper base paper Comes into contact with the platen roller, and the driving mechanism of the printer rotates the platen roller to drive the thermal paper to be transported downstream. Then, the control device of the printer controls the heating element of the print head to generate heat, and the heat is conducted to the heat-sensitive coating layer via the protective layer of the heat-sensitive paper, and the colorless dye and color former in the heat-sensitive coating layer are The substance undergoes a chemical reaction due to heat and changes color. As a result, a sheet including predetermined characters or images is printed. After the printing is completed, the printed paper is peeled off from the unused thermal paper due to manual cutting or automatic cutting, and the unused thermal paper is held between the print head and the platen roller and waits for the next printing.

  In the conventional price label printer on the market, the mounting structure of the platen roller and the installation of the paper cassette are not rational, the configuration is complicated, and the occupied space is large, so that the apparatus cannot be made compact. There is also a problem that the roller paper cannot be easily attached and detached, the paper feeding is not fluent, and the printing performance is poor.

  It is an object of the present invention to provide a compact portable price label printer.

  The present invention uses the following technical solutions to solve the above technical problems. The portable price label printer includes a housing and a lid, and a paper cassette for storing thermal roll paper is installed in an upper portion of the housing, a print head is installed inside the paper cassette, and the lid is installed in the lid. A platen roller that is in close contact with the print head is installed, and an electric motor that rotates the platen roller via a transmission component is installed inside the housing.

  In the above technical solution, a fixed seat is installed inside the lid portion, the platen roller is attached to the fixed seat, a torsion spring pressing plate is installed above the fixed seat, and a rotating shaft of the platen roller is provided. A torsion spring is attached so that both arms abut against the fixed seat and the torsion spring pressing plate, respectively.

  In the above technical solution, a movable plate and a slide switch are further installed inside the lid, a snap is installed on the movable plate, and an engagement groove for engaging with the snap is installed on an upper portion of the paper cassette. The movable plate is connected to a return spring, and the movable switch is moved horizontally by pressing a slide switch, thereby separating the snap from the engagement groove.

  In the above technical solution, a cutter located above the paper discharge port of the paper cassette is installed on one side of the lid.

  In the above technical solution, the lid is hingedly connected to the housing via a rotating shaft.

  In the above technical solution, the transmission component is a gear train connected to the electric motor, a gear is extrapolated to the platen roller, the gear train is attached to a side surface of the paper cassette, and the upper part of the gear train is It is covered by a back plate fixedly connected to the paper cassette.

  In the above technical solution, a heat dissipating piece that is in contact with the back plate is installed on a back surface of the print head.

  In the above technical solution, a holder for mounting the electric motor is installed on an outer wall of the paper cassette, and the outside of the holder is covered with a heat transfer piece that contacts the back plate.

  In the above technical solution, the paper cassette is provided with an observation hole, and the housing is provided with a viewing port corresponding to the observation hole.

  In the above technical solution, a sensor for sensing the length and interval of the thermal roll paper is installed on the inner wall of the paper cassette and the fixed seat.

The portable price label printer according to the present invention has the following beneficial effects.
When using the portable price label printer according to the present invention, characters or images are printed on the thermal paper by the print head, and the electric motor rotates the platen roller via the transmission component to continuously discharge the thermal roll paper. Realize. According to the present invention, the print head, the paper cassette, and the electric motor are unitized and installed in the housing, and the platen roller is installed in the lid, so that the space can be sufficiently used and the configuration can be made compact. Further, since the thermal roll paper in the paper cassette can be replaced simply by opening the lid, the operation is simplified.

FIG. 2 is a schematic view of a configuration of a portable price label printer according to the present invention. FIG. 2 is a schematic diagram of a configuration when a cover in FIG. 1 is opened. FIG. 3 is a schematic diagram illustrating a configuration of a lid and a paper cassette. FIG. 4 is a schematic diagram illustrating a configuration when a cover in FIG. 3 is opened. FIG. 4 is a schematic diagram illustrating a configuration when a cover in FIG. 3 is opened and roller paper is taken out. FIG. 6 is a schematic view of the configuration of FIG. 5 viewed from the other direction. FIG. 4 is an exploded schematic view of a paper cassette. It is a structure schematic diagram of a cover part. It is a disassembled schematic diagram of a cover part.

In order to clarify the technical features, objects and effects of the present invention, specific embodiments of the present invention will be described in detail with reference to the drawings.
As shown in FIGS. 1 to 9, the present invention includes a housing 1 and a lid 2, and a paper cassette 3 for storing a thermal roll paper 4 is installed in an upper part of the housing 1. A print head 5 is provided. A platen roller 6 that is in close contact with the print head 5 is installed in the lid 2, and an electric motor 7 that rotates the platen roller 6 via a transmission component is installed inside the housing 1.

  When the portable price label printer according to the present invention is used, characters or images are printed on print paper by the print head 5, and the motor 7 rotates the platen roller 6 via the transmission component, thereby forming the heat-sensitive roll paper 4. Achieve continuous paper ejection. In the present invention, since the print head 5, the paper cassette 3, and the electric motor 7 are unitized and installed in the housing 1, and the platen roller 6 is installed in the cover 2, the space is sufficiently used. be able to. Further, since the thermal roll paper 4 in the paper cassette 3 can be replaced simply by opening the lid 2, the operation is simplified.

  A fixed seat 8 is installed inside the lid 2, a platen roller 6 is attached to the fixed seat 8, a torsion spring pressing plate 9 is installed above the fixed seat 8, and both arms are mounted on a rotation shaft of the platen roller 6. A torsion spring 10 is attached to the fixed seat 8 and the torsion spring pressing plate 9 respectively. The torsion spring 10 provides a pressure to the platen roller 6 and an elastic force for flipping the lid 2. The torsion spring 10 is fixed to the fixed seat 8 via a torsion spring pressing plate 9.

  A movable plate 11 and a slide switch 12 are further provided inside the lid 2. A snap 13 is provided on the movable plate 11, an engagement groove 14 for engaging with the snap 13 is provided on the upper part of the paper cassette 3, and the movable plate 11 is horizontally moved by pushing a slide switch 12 to 13 and the engagement groove 14 can be separated. The movable plate 11 is connected to the return spring 15. In the present embodiment, the return spring 15 is a telescopic spring for providing a pressing force to the movable plate 11 to automatically return.

  On one side of the lid 2, a cutter 16 located above the paper discharge port of the paper cassette 3 is installed. The thermal roll paper 4 can be cut by the cutter 16.

  The lid 2 is hingedly connected to the housing 1 via a rotation shaft 17. The thermal roll paper 4 in the paper cassette 3 can be replaced by separating the snap 13 and the engagement groove 14 and rotating and opening the lid 2. Also, the resolution of paper jams becomes convenient.

  The transmission component is a gear train 18 connected to the electric motor 7, a gear is extrapolated to the platen roller 6, the gear train 18 is attached to the side of the paper cassette 3, and the upper part of the gear train 18 is connected to the paper cassette 3. It is covered by a fixedly connected back plate 19. The transmission by the gear train 18 of this embodiment is only preferable, and other components such as a belt transmission and a worm gear may be used as transmission components.

  On the back side of the print head 5, a heat radiating piece 20 that contacts the back plate 19 is provided. A holder 21 for attaching the electric motor 7 is installed on the outer wall of the paper cassette 3, and the outside of the holder 21 is covered with a heat transfer piece 22 that contacts the back plate 19. In this embodiment, the print head 5 has a ceramic piece heating element, the ceramic piece heating element is fixed to the heat radiating piece 20 via a high-temperature resistant double-sided tape, and the heat radiating piece 20 is fixed to the paper cassette 3 with a screw. I have. Since the heat transfer piece 22 and the heat dissipation piece 20 are configured to conduct heat to the back plate 19, the heat dissipation area can be increased, and the heat dissipation effect of the electric motor 7 can be improved.

  An observation hole 23 is provided in the paper cassette 3, and a viewing port 24 corresponding to the observation hole 23 is provided in the housing 1 so that the use state of the thermal roll paper 4 can be checked for convenience.

  A sensor for sensing the length and interval of the thermal roll paper 4 is provided on the inner wall of the paper cassette 3 and the fixed seat 8. In the present embodiment, the thermal roll paper 4 uses a tape including a plurality of glue label papers, includes a print layer 401 and a base paper layer 402, and a plurality of labels on which the print layers 401 are arranged at intervals. Paper. Since the materials of the print layer 401 and the base paper layer 402 are different, it is possible to perform measurement using a transmission type sensor, and based on this, the operations of the print head 5 and the electric motor 7 are appropriately controlled. be able to.

  A battery and a PCB board are further installed inside the housing 1. The housing 1 has a power switch 25 mounted on a side surface, a USB interface and a status lamp installed on a bottom portion, and a handy strap 26 on the left side. .

  On the side wall of the paper cassette 3, a lid detection switch for detecting opening and closing of the lid 2 is provided. When the cover 2 is closed, the touch portion of the cover detection switch is pressed, and when the cover 2 is opened, the cover detection switch is flipped up. Thus, the purpose of detecting the opening and closing of the cover 2 can be achieved.

  Although the embodiments of the present invention have been described with reference to the drawings, the present invention is not limited to the above specific embodiments. The specific embodiments described above are illustrative only and not intended to be limiting. A person skilled in the art can implement the present invention in various forms based on the present invention, without departing from the gist of the present invention and the scope of the utility model registration claims, and these forms also belong to the protection scope of the present invention. .

DESCRIPTION OF SYMBOLS 1 ... Housing 2 ... Lid 3 ... Paper cassette 4 ... Thermal roll paper 5 ... Print head 6 ... Platen roller 7 ... Electric motor 8 ... Fixed seat 9 ... Torsion spring pressing plate 10 ... Torsion spring 11 ... Movable plate 12 ... Slide switch 13 ... Snap 14 ... Engaging groove 15 ... Return spring 16 ... Cutter 17 ... Rotating shaft 18 ... Gear train 19 ... Back plate 20 ... Heat radiating piece 21 ... Holder 22 ... Electrical heating piece 23 ... Observation hole 24 ... View port

Claims (10)

A paper cassette (3) containing a housing (1) and a lid (2) is provided at an upper portion of the housing (1) for storing a thermal roll paper (4), and an interior of the paper cassette (3) is provided. The print head (5) is installed in
A platen roller (6) that is in close contact with the print head (5) is installed in the lid (2), and an electric motor () that rotates the platen roller (6) via a transmission component inside the housing (1). (7) A portable price label printer, wherein:   A fixed seat (8) is installed inside the lid (2), the platen roller (6) is attached to the fixed seat (8), and a torsion spring pressing plate (9) is provided above the fixed seat (8). ) Is installed, and a torsion spring (10) is attached to the rotation shaft of the platen roller (6) so that both arms respectively contact the fixed seat (8) and the torsion spring pressing plate (9). The portable price label printer according to claim 1, characterized in that:   A movable plate (11) and a slide switch (12) are further installed inside the lid part (2), a snap (13) is installed on the movable plate (11), and an upper part of the paper cassette (3) is provided. An engagement groove (14) for engaging with the snap (13) is provided, the movable plate (11) is connected to a return spring (15), and the slide switch (12) is pushed to move the movable plate. The portable price label printer according to claim 1, wherein the snap (13) and the engagement groove (14) are separated by horizontally moving (11).   The portable price label printer according to claim 1, characterized in that a cutter (16) located above a paper outlet of a paper cassette (3) is installed on one side of the lid (2). . The portable price label printer according to claim 1, wherein the lid (2) is hingedly connected to the housing (1) via a rotating shaft (17).   The transmission component is a gear train (18) connected to the electric motor (7). A gear is extrapolated to the platen roller (6), and the gear train (18) is mounted on a side surface of the paper cassette (3). 2. The portable price label printer according to claim 1, wherein the upper part of the gear train is mounted and covered by a back plate fixedly connected to the paper cassette.   7. The portable price label printer according to claim 6, wherein a heat radiating piece (20) for contacting the back plate (19) is provided on a back surface of the print head (5).   A holder (21) for mounting the electric motor (7) is installed on an outer wall of the paper cassette (3), and a heat transfer piece (22) in which the outside of the holder (21) contacts the back plate (19). 7. The portable price label printer according to claim 6, wherein the label printer is covered by the label.   The paper cassette (3) is provided with an observation hole (23), and the housing (1) is provided with a viewing port (24) corresponding to the observation hole (23). The described portable price label printer.   2. The mobile phone according to claim 1, wherein a sensor for sensing a length and an interval of the thermal roll paper (4) is installed on an inner wall of the paper cassette (3) and the fixed seat (8). 3. Type price label printer.