CN114211885A - Printer and printing method - Google Patents

Abstract

The invention discloses a printer, a printer main body is provided with a paper feeding channel; the PCB is arranged on the printer main body and is provided with a paper jam detection circuit; the intermediate component is arranged on the printer main body and is electrically connected with the detection circuit; the trigger part is electrically connected with the detection circuit and also comprises a movable part positioned in the paper feeding channel; the movable part is configured to be pushed by paper and contact the intermediate part when the paper is jammed in the paper feeding channel so as to conduct the detection circuit. The CB board is provided with a paper jam detection circuit, when a paper jam occurs in the paper feeding channel, the movable part of the trigger part can be pushed by paper and contacts the intermediate part so as to conduct the detection circuit, and the PCB mainboard judges that the paper jam occurs and carries out subsequent actions after obtaining a paper jam signal. And the requirement on the placement of the space position is lower.

Description

Printer and printing method

Technical Field

The present invention relates to a printer.

Background

The printer that uses commonly at present is mainly by printing the stock form and leading to paper exit department from printing the stock form around the paper roll, and when printing the in-process, go out paper not in the same direction as or during the card paper, cause the paper stifled in paper exit department, the printer still continues the work, can't stop by oneself, extravagant paper, damages the printer even.

Or, for example, the Chinese utility model patent with application number 201921966613.5 and the patent name of thermal printer with the function of detecting paper jam, the paper jam detection device comprises a base, a paper cover and a panel, wherein a paper outlet is arranged between the base and the panel, a fixed plate is arranged at the bottom of the panel, a paper jam detection plate is arranged at one end, close to the paper outlet, of the panel, the paper jam detection plate is hinged with the panel, a torsion spring is arranged at the top end of the paper jam detection plate, two end parts of the torsion spring are respectively clamped at the bottom of the fixed plate and on the side wall, close to the fixed plate, of the paper jam detection plate, so that the paper jam detecting plate is pressed to the fixing plate when the paper jam detecting plate is subjected to a torsion greater than that of the torsion spring, the bottom of the fixing plate is provided with a photoelectric switch, when the paper jam detection plate is pressed to the fixing plate and passes through the photoelectric switch, the photoelectric switch senses the paper jam detection plate and transmits a signal to a control panel of the thermal printer so as to control the thermal printer to stop. This kind of detect printer of stifled paper function needs the special design space to install and support the photoelectricity and detect the board with stifled paper to design the electric wire and make the photoelectricity to be connected with the circuit board, this mode installation is inconvenient, and requires highly to putting of spatial position.

Disclosure of Invention

The present invention provides a printer that overcomes the deficiencies of the background art. One of the technical schemes adopted by the invention for solving the technical problems is as follows:

a printer, comprising:

a printer main body formed with a paper feed path;

a PCB supported on the printer body and having a jam detection circuit; and

a jam trigger mechanism is provided with:

the intermediate component is arranged on the printer main body and is electrically connected with the detection circuit; and

the trigger component is electrically connected with the detection circuit and also comprises a movable part positioned in the paper feeding channel; the movable part is configured to be pushed by paper and contact the intermediate part when the paper is jammed in the paper feeding channel so as to conduct the detection circuit.

In a preferred embodiment, the printing device further comprises a printing head and a pressing roller, wherein the pressing roller transports the printing paper clamped between the printing head and the pressing roller in a rotating mode.

In a preferred embodiment, the printing apparatus further comprises a paper cutting mechanism, the paper cutting mechanism is disposed on a downstream side of the print head, and the movable portion is disposed between the print head and the paper cutting mechanism.

In a preferred embodiment, the printer further includes a force application member, the printing head is swingably supported on the printer main body, the force application member is disposed between the printing head and the printer main body and applies a force to the printing head in a direction toward the platen roller, and the intermediate member includes a metal stopper rod supported on the printer main body for limiting a swing amplitude of the printing head.

In a preferred embodiment, the printer main body includes a metal frame, and the metal limiting rod is electrically connected to the detection circuit on the PCB through the metal frame.

In a preferred embodiment, the printer main body is further provided with an electrical isolation member and a metal connecting member, and the trigger member is supported on the printer main body through the electrical isolation member and is electrically connected with the detection circuit through the metal connecting member; the metal connecting piece comprises a lead, a flexible circuit board or a first metal structural piece which is not in contact with the printer main body.

In a preferred embodiment, the print head is electrically connected to the detection circuit, and the intermediate member further includes a second metal structure fixed to the print head, the second metal structure being electrically connected to a metal portion of the print head for electrically connecting to the detection circuit.

In a preferred embodiment, the triggering component is a conductive elastic sheet, the conductive elastic sheet includes a straight section and a bent section, the straight section is connected with the PCB main board, and the bent section surrounds the periphery of the middle component.

In a preferred embodiment, the detection circuit includes a sensor, a signal providing module and a signal change module, the signal providing module is electrically connected to the sensor to provide a first signal to the sensor, the triggering component is electrically connected to the signal providing module, and the intermediate component is electrically connected to the signal change module;

when the triggering component contacts the intermediate component, the signal providing module is communicated with the signal changing module and switches the first signal into a second signal to be provided to the sensor.

In a preferred embodiment, the signal changing module is a ground line for conducting away static electricity on the intermediate member.

The second technical scheme adopted by the invention for solving the technical problems is as follows:

a printer, comprising:

a printer main body formed with a paper feed path;

a PCB disposed on the printer body and having a jam detection circuit; and

a jam trigger mechanism is provided with:

the intermediate component is arranged on the printer main body and is electrically connected with the detection circuit;

the fixing component is arranged on the printer main body and is electrically connected with the detection circuit; and

the triggering component comprises a stressed part positioned in the paper feeding channel;

the forced part is configured to be pushed by paper when paper is jammed in the paper feeding channel, and the trigger part can move and contact the intermediate part and the fixed part when the forced part is pushed so as to conduct the detection circuit.

In a preferred embodiment, the detection circuit includes a sensor, a signal providing module and a signal changing module, the signal providing module is electrically connected to the sensor to provide a first signal to the sensor, the fixing member is electrically connected to the signal providing module, and the intermediate member is electrically connected to the signal changing module;

when the triggering part contacts the fixing part and the middle part, the signal providing module is communicated with the signal changing module to switch the first signal into a second signal to be provided to the sensor;

the signal change module is a ground wire and is used for conducting away static electricity on the intermediate component.

Compared with the background technology, the technical scheme has the following advantages:

the PCB board is provided with a paper jam detection circuit, when a paper jam is generated in the paper feeding channel, the movable part of the trigger part can be pushed by paper and contacts the intermediate part so as to switch on the detection circuit, and the PCB mainboard judges that the paper jam occurs and carries out subsequent actions after obtaining a paper jam signal. And, need not special design space and install and support photoelectricity pair and jam detection board, also need not to design the electric wire and make photoelectricity pair and circuit board be connected, it is lower to the requirement of putting of spatial position.

2 because the paper cutting mechanism disposes in the downstream side of printer head, the movable part disposes between printer head and the paper cutting mechanism for the distance between the movable part and the paper that produces the folding when the card paper takes place is nearer, and the paper only needs to move short distance just can push away the movable part and move about, and the accuracy is higher.

3. The trigger part is connected with the high level part of the detection circuit, the intermediate part is connected with the grounding part of the detection circuit, when the movable part of the trigger part is contacted with the intermediate part, the high level is grounded and pulled down to be low level, the realization mode of the circuit part is convenient, the structure of the PCB can be realized without excessive change, and the cost is reduced.

4. The middle part is including supporting be used for the restriction in the printer main part beat the metal gag lever post of printer head amplitude of oscillation, promptly, the metal gag lever post is the limit structure of printer itself, utilizes the structure that the current structure of printer is as the middle part, need not newly-increased part, ensures that the printer size can not additionally increase.

5. The metal limiting rod is electrically connected with the detection circuit on the PCB through the metal frame, namely, the metal limiting rod is also electrically conducted through the metal frame required by the printer, and the size of the printer is not additionally increased.

6. The trigger part is supported on the printer main body through the electric isolating piece, and the electric isolating piece can isolate the trigger part from the printer main body so as to avoid the phenomenon that the trigger part is in direct contact with the intermediate part to generate short circuit.

7. The printing head is electrically connected with the detection circuit, the second metal structural part of the intermediate part is electrically connected with a metal part which is used for being electrically connected with the detection circuit on the printing head, namely, the intermediate part is indirectly electrically connected with the PCB through the printing head, and a novel connection mode is provided.

8. The signal change module is a ground wire and is used for conducting away static electricity on the intermediate component, namely, the intermediate component has the function of conducting static electricity besides the function of detecting paper jam.

Drawings

The invention is further illustrated by the following figures and examples.

FIG. 1 illustrates a cross-sectional view of the movable portion separated from the intermediate member in one embodiment.

Fig. 2 shows a schematic cross-sectional view of an embodiment where the movable part is in contact with the intermediate part.

Fig. 3 is a partially enlarged schematic view of fig. 1.

Fig. 4 is a partially enlarged schematic view of fig. 2.

Fig. 5 depicts an assembly of the electrical isolator, the movable portion and the intermediate member in one embodiment.

Fig. 6 is a schematic circuit diagram of a detection circuit according to an embodiment.

Fig. 7 is a schematic view showing a state where the trigger member does not contact the fixed member and the intermediate member in another embodiment.

Fig. 8 is a schematic view showing a state where the trigger member contacts the fixed member and the intermediate member in another embodiment.

Detailed Description

In the claims, the specification and the drawings of the present invention, unless otherwise expressly limited, the terms "first", "second" or "third", etc. are used for distinguishing between different items and not for describing a particular sequence.

In the claims, the specification and the drawings of the present invention, unless otherwise expressly limited, all directional or positional relationships indicated by the terms "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," "counterclockwise," and the like are based on the directional or positional relationships indicated in the drawings and are used for convenience in describing the present invention and for simplicity in description, but do not indicate or imply that the device or element so indicated must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be construed as limiting the scope of the present invention.

In the claims, the description and the drawings of the present application, unless otherwise expressly limited, the terms "fixedly connected" and "fixedly connected" should be interpreted broadly, that is, any connection between the two that is not in a relative rotational or translational relationship, that is, non-detachably fixed, integrally connected, and fixedly connected by other devices or elements.

In the claims, the specification and the drawings of the present invention, the terms "including", "having", and variations thereof, are intended to be inclusive and not limiting.

Referring to fig. 1 to 6, a preferred embodiment of a printer includes a printer main body 10 provided with a printing path 1, a PCB 80, and a jam trigger mechanism.

The printer main body 10 is formed with a paper feed path 1.

The printer further includes a printing head 90 and a platen roller 91, and the platen roller 91 transports printing paper sandwiched between the printing head 90 and the platen roller 91 by rotating. The printer further includes a paper cutting mechanism 92, and the paper cutting mechanism 92 is disposed on the downstream side of the print head 90, that is, near the exit of the paper path 1.

In this embodiment, the printer main body 10 includes a housing 12 and a metal frame 13, and the metal frame 13 is fixed in the housing 12. The print head 90, the platen roller 91, the PCB 80, and the paper cutting mechanism 92 are mounted on the metal frame 13. The PCB 80 is fixed to the metal frame 13 by screws, and the screws communicate with a ground circuit disposed on the PCB 80.

In this embodiment, the printer further includes a biasing member, the print head 90 is swingably supported on the printer main body 10, and the biasing member is disposed between the print head 90 and the printer main body 10 and biases the print head 90 in the direction of the platen roller 91. Specifically, as shown in fig. 5, the urging member is a spring 93.

The PCB 80 is disposed on the printer body 10 and has a jam detection circuit.

The jam trigger mechanism includes an intermediate member and a trigger member.

The intermediate member is disposed on the printer body 10 and electrically connected to the detection circuit. In this embodiment, the intermediate member includes a metal stopper 30 supported on the printer body 10 to limit the swing range of the print head 90. That is, metal gag lever post 30 is the limit structure of printer itself, utilizes the structure of the current structure of printer as the intermediate member, need not newly increase the part, ensures that the printer size can not additionally increase.

In this embodiment, as shown in fig. 5, the metal limiting rod 30 is electrically connected to the detection circuit on the PCB 80 through the metal frame 13. Specifically, the detection circuit of the PCB 80 is provided with a ground terminal, and the metal limiting rod 30 is connected to the ground terminal of the detection circuit of the PCB 80. As required, the structure of the metal stopper 30 can be maintained, and a ground rod connected to the ground terminal of the detection circuit of the PCB 80 can be additionally provided to the intermediate member.

The trigger part is electrically connected with the detection circuit and comprises a movable part positioned in the paper feeding channel 1; the movable portion is configured to be pushed by paper and contact the intermediate member to turn on the detection circuit when a paper jam occurs in the paper feeding path 1. In this embodiment, the movable portion is disposed between the print head 90 and the paper cutting mechanism 92.

In this embodiment, as shown in fig. 3, the triggering component is a conductive elastic sheet 20, the conductive elastic sheet 20 includes a straight section 21 and a bent section 22, the straight section 21 is connected to the PCB main board 80, the bent section 22 is the movable portion, and a guide inclined plane 23 is disposed at an outlet of the bent section 22 facing the printing channel 1. The bending section 22 surrounds the periphery of the metal limiting rod 30.

In this embodiment, the printer main body 10 is further provided with an electrical isolation member 11 and a metal connecting member (not shown in the figure), and the triggering member is supported on the printer main body 10 through the electrical isolation member 11 and is electrically connected to the detecting circuit through the metal connecting member; the metal connecting piece comprises a lead, a flexible circuit board or a first metal structural piece which is not in contact with the printer main body. In this embodiment, the electrical isolation member 11 is an insulating plate to isolate the conductive elastic sheet 20 from the metal frame 13.

In one embodiment, the print head 90 is electrically connected to the ground circuit of the detection circuit, and the intermediate component further includes a second metal structure fixed to the print head 90, the second metal structure being electrically connected to a metal portion of the print head 90 for electrical connection to the detection circuit. Specifically, the printing head comprises a thermal head, a thermal head support piece and a circuit adapter plate, wherein the thermal head is electrically connected with the circuit adapter plate, a circuit of a grounding circuit connected to a PCB (printed circuit board) is arranged on the circuit adapter plate or the thermal head, and the thermal head, the circuit adapter plate and the thermal head support piece are connected with the circuit of the grounding circuit in a riveting/screw/welding mode so as to achieve the purpose of conducting static electricity. The second metallic structural member is connected to the thermal head support member to communicate with the ground circuit through the thermal head support member. Wherein, the thermal head support piece is made of metal material.

That is, the metal stopper 30 is connected to the detection circuit through the second metal structure and the print head 90, and the second metal structure and the first metal structure may have the same structure.

In this embodiment, the detection circuit includes a sensor 50, a signal providing module 51 and a signal changing module 52, the signal providing module 51 is electrically connected to the sensor 50 to provide a first signal for the sensor 50, the triggering component is electrically connected to the signal providing module 51, and the intermediate component is electrically connected to the signal changing module 52. When the triggering component contacts the intermediate component, the signal providing module 51 communicates with the signal changing module 52, and switches the first signal into a second signal to be provided to the sensor.

In this embodiment, as shown in fig. 6, the signal changing module 52 is a ground line and is connected to the ground terminal of the PCB board 80 for conducting away the static electricity on the intermediate component. That is, the intermediate member has a function of conducting static electricity in addition to the function of detecting a jam. The signal providing module 51 comprises a high input connected to the sensor 50 via two resistors 60, 70. The detection circuit further comprises a connector 40, the connector 40 is provided with a first pin and a second pin, the signal providing module 51 and the conductive elastic sheet 20 are connected with the first pin, and the signal changing module 52 and the metal limiting rod 30 are connected with the second pin.

Therefore, as shown in fig. 3, when the paper feeding channel 1 is not jammed, the bent section 22 of the conductive elastic sheet 20 is not in contact with the metal limiting rod 30, and the detection circuit is in an off state, the sensor 50 always receives the first signal of the jam and does not receive the second signal of the jam;

as shown in fig. 4, when a paper jam occurs in the paper feeding channel 1, the paper pushes against the bending section 22 of the conductive elastic sheet 20 and continues to push against the bending section 22 along the guiding inclined plane 23 until the bending section 22 contacts the metal limiting rod 30, and at this time, the signal providing module 51 is connected to the signal changing module 52 and switches the first signal into a second signal to be provided to the sensor 50, that is, the second signal is a signal of the detection circuit being connected and is also a ground signal.

In another embodiment, unlike the above-described embodiment: in this embodiment, as shown in fig. 7 and 8, the fixing member 100 is disposed on the printer main body, and the fixing member 100 is made of a metal material, supported on an insulating member, and attached to the printer main body through the insulating member. The fixing member 100 is electrically connected to the signal providing module of the detection circuit through a wire, a flexible circuit board, or a rigid metal structure. The triggering component comprises a force-bearing part 200, the force-bearing part 200 is at least partially arranged in the paper feeding channel 1, and when a paper jam occurs in the paper feeding channel 1, the triggering component moves when the force-bearing part 200 is pushed by paper and can be jointed to the middle component 300 and the fixed component 100 to conduct the signal providing module 51 and the signal change module 52, so that the signal received by the sensor is triggered to change.

In another embodiment, the triggering member includes a metal member movably disposed on the printer main body, and a movable member having a force-receiving portion located in the paper feeding path, wherein the movable member is moved by the paper when the paper is jammed, so as to push the metal member to move, and engage the middle member and the fixed member, so as to conduct the signal providing module 51 and the signal changing module 52, thereby triggering the signal received by the sensor to change.

The above description is only a preferred embodiment of the present invention, and therefore should not be taken as limiting the scope of the invention, which is defined by the appended claims and their equivalents.

Claims (12)

1. A printer, comprising:

a printer main body formed with a paper feed path;

a PCB disposed on the printer body and having a jam detection circuit; and

a jam trigger mechanism is provided with:

the intermediate component is supported on the printer main body and is electrically connected with the detection circuit; and

the trigger component is electrically connected with the detection circuit and also comprises a movable part positioned in the paper feeding channel;

the movable part is configured to be pushed by paper and contact the intermediate part when the paper is jammed in the paper feeding channel so as to conduct the detection circuit.

2. The printer according to claim 1, characterized in that: the printing machine further comprises a printing head and a pressing roller, wherein the pressing roller conveys printing paper clamped between the printing head and the pressing roller in a rotating mode.

3. The printer according to claim 2, characterized in that: the paper cutting mechanism is arranged on the downstream side of the printing head, and the movable part is arranged between the printing head and the paper cutting mechanism.

4. A printer according to claim 2, wherein: the printer further comprises a force application component, the printing head can be supported on the printer main body in a swinging mode, the force application component is arranged between the printing head and the printer main body and applies force to the printing head in the direction of the pressing roller, and the middle component comprises a metal limiting rod which is supported on the printer main body and used for limiting the swinging amplitude of the printing head.

5. A printer according to claim 4, characterised in that: the printer main part includes metal frame, the metal gag lever post passes through metal frame with the detection circuit electricity on the PCB board is connected.

6. A printer according to claim 5, wherein: the printer main body is also provided with an electric isolating piece and a metal connecting piece, the trigger part is supported on the printer main body through the electric isolating piece and is electrically connected with the detection circuit through the metal connecting piece; the metal connecting piece comprises a lead, a flexible circuit board or a first metal structural piece which is not in contact with the printer main body.

7. A printer according to claim 2, wherein: the printing head is electrically connected with the detection circuit, the middle part further comprises a second metal structural part fixed on the printing head, and the second metal structural part is electrically connected with a metal part which is used for being electrically connected with the detection circuit on the printing head.

8. A printer according to claim 1, wherein: the trigger part is electrically conductive shell fragment, and this electrically conductive shell fragment includes straight section and the section of bending, straight section and PCB mainboard electricity are connected, the section of bending centers on the intermediate part periphery, the section of bending is promoted and is contacted when the card paper intermediate part.

9. A printer according to any one of claims 1 to 8, characterised in that: the detection circuit comprises a sensor, a signal providing module and a signal change module, wherein the signal providing module is electrically connected with the sensor to provide a first signal for the sensor, the trigger component is electrically connected with the signal providing module, and the intermediate component is electrically connected with the signal change module;

when the triggering component contacts the intermediate component, the signal providing module is communicated with the signal changing module to switch the first signal into a second signal to be provided to the sensor.

10. A printer according to claim 9, wherein: the signal change module is a grounding circuit and is used for conducting away static electricity on the intermediate component.

11. A printer, comprising:

a printer main body formed with a paper feed path;

a PCB disposed on the printer body and having a jam detection circuit; and

a jam trigger mechanism is provided with:

the intermediate component is arranged on the printer main body and is electrically connected with the detection circuit;

the fixing component is arranged on the printer main body and is electrically connected with the detection circuit; and

the triggering component comprises a stressed part positioned in the paper feeding channel;

the forced part is configured to be pushed by paper when paper is jammed in the paper feeding channel, and the trigger part can move and contact the intermediate part and the fixed part when the forced part is pushed so as to conduct the detection circuit.

12. The printer of claim 11, wherein the detection circuit comprises a sensor, a signal providing module and a signal varying module, the signal providing module being electrically connected to the sensor to provide a first signal to the sensor, the fixing member being electrically connected to the signal providing module, the intermediate member being electrically connected to the signal varying module;

when the triggering part contacts the fixing part and the middle part, the signal providing module is communicated with the signal changing module to switch the first signal into a second signal to be provided to the sensor;

the signal change module is a ground wire and is used for conducting away static electricity on the intermediate component.

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