JP2010105764A - Discharge port structure with cover to prevent paper jamming in printer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a discharge port structure with a cover, preventing paper jamming in a printer, wherein slight paper jamming is allowed without immediately operating a detection device even if paper jamming is generated, and the detection device is operated when paper jamming exceeds prescribed amount, the discharge port structure with the cover of the printer is simple, and a length of paper from its distal end up to its rear end is shortened. <P>SOLUTION: When paper jamming is generated since the distal end of receipt paper 17 discharged from a discharge port 2a abuts on an obstacle (a finger of a customer or an article) 18, the receipt paper 17 curves in a reservoir part 10 and abuts on the cover 11 as illustrated at an initial stage. When the paper jamming of the receipt paper 17 is advanced, the cover 11 is pushed up by stiffness of the receipt paper 17 and is rotated to the left with a shaft 12 as a center. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a structure for preventing a paper jam at a discharge outlet with a cover of a printer, and is applied to an electronic cash register or the like in which a paper jam occurs.

  An outline of a self-POS 81 such as a super store will be described with reference to FIG. A receipt discharge port 83 is provided on the front surface of the receipt printer 82, and the front portion of the receipt discharge port 83 is a barcode scan area 84.

  Because it is self-operated, customers who have not received training touch the receipt with their fingers. Since the barcode scan area 84 is arranged in front of the receipt discharge port 83, the product or the customer's finger becomes an obstacle to the receipt discharge and easily causes a paper jam.

  The stoppage of the printer due to a paper jam can only be dealt with by a trained salesperson level. Therefore, the receipt printer 82 equipped with the self-POS 81 needs to prevent paper jams from occurring during normal operation.

  As a first conventional technique, the main points of an impeller-type receipt conveyance and holding mechanism in a printer will be described with reference to FIG. 10 (filed by the present applicant as Japanese Patent Application No. 2008-14979 on June 6, 2008). did.).

  The impeller 24 is driven by a stepping motor (not shown). When the receipt paper starts to be printed for receipt printing inside the printer 21, the impeller 24 also starts rotating. Thereafter, when printing is finished inside the printer 21 and the receipt paper is cut, the impeller 24 stops rotating after a predetermined time has elapsed after the cutting, and holds the cut receipt.

  FIG. 10 is a cross-sectional view of the receipt 21 that is cut from the continuous paper and conveyed by the impeller 24 in the printer 21.

  A rotary shaft 23 is rotatably supported by a bearing (not shown) installed in the housing 22 of the printer 21, and two impellers 24 are fixed to the rotary shaft 23 in the axial direction. Each impeller 24 is made of silicone rubber and has three elastically deformable blades 24a around it.

  Each blade 24a is composed of a curved surface portion such as a cycloid that protrudes from the periphery of the impeller 24 so as to gradually approach the conveyance path formed on the inner surface of the housing 22, and a flat surface portion continuous therewith. .

  The receipt 41 is conveyed between the conveyance path and the intermediate receipt guide 25 and the receipt guide 26.

  When each impeller 24 rotates counterclockwise, first, the curved surface portion of each blade 24a contacts the heat-sensitive surface 41a of the receipt 41 while being gently elastically deformed, and then the flat surface portion makes the heat-sensitive surface 41a of the receipt 41 leftward. The non-heat sensitive surface 41 b of the receipt 41 is pressed against the conveyance path of the housing 22 by pushing. Then, since each plane part entrains the receipt 41 downward by a frictional force, the receipt 41 is discharged from the discharge port 22 b of the housing 22. The vicinity of the discharge port 22b is covered with a cover 31 on the housing side.

  As a second conventional technique, the main points of a paper discharge device for a printer will be described with reference to publications distributed before the present application (see, for example, Patent Document 1).

  FIG. 11 is a longitudinal sectional view of the printer main body 51 and the presenter mechanism 71 of the paper discharge device of the printer. The presenter mechanism unit 71 is a means for discharging the paper 52 that has passed or cut through the cutter mechanism 60, and includes a paper discharge mechanism (not shown).

  A paper transport mechanism 54 and a printing mechanism 57 are provided in the paper transport path 53, and the paper transport mechanism 54 includes a pair of drive rollers 55 and 56. The print mechanism 57 includes a print head 58 and a platen 59. . A cutter mechanism 60 is installed adjacent to the printing mechanism 57, and the cutter mechanism 60 has a cutter blade 61.

  The sheet 52 discharged from the sheet discharge port 62 of the cutter mechanism 60 is conveyed to the sheet discharge path 72 of the presenter mechanism unit 71. In order to convey the paper 52 smoothly, a pair of paper guides 63 and 64 are provided.

  The paper guide 63 is extended inside the presenter mechanism 71 and supported by a frame 73. Inside the presenter mechanism portion 71, a paper reservoir 74 is formed by the space portion. The paper reservoir 74 is provided with a guide plate 75 having a U-shaped cross section as means for curving the paper 52. A part of the guide plate 75 is parallel to the paper guide 63, and both terminal portions of the guide plate 75 and the paper guide 63 constitute a paper discharge port 76. The sheet 52 is conveyed by a pair of drive rollers 77 and 78.

  Inside the presenter mechanism portion 71, a paper sensor 79 is installed between the pair of drive rollers 77 and 78 and the paper discharge port 76.

  When the paper sensor 79 detects the paper 52, the operation of the paper discharge mechanism is stopped, and the cutter mechanism 60 cuts the paper 52.

  When a paper jam occurs in the paper reservoir 74, the paper 52 is first curved as indicated by the broken line in FIG. 11, and then the curvature is enlarged as indicated by the solid line in FIG.

JP-A-6-316122

  In the impeller-type receipt transporting and holding mechanism in the printer described as the first prior art, the function of storing the receipt 41 by the housing-side cover 31 is not clarified, and the shortest bill surface of the receipt 41 is not disclosed. The length (the length from the front end to the rear end) is considerably long (depending on the type and size of the printer, as an example, about 100 mm), and a complicated mechanism such as the impeller 24 is required.

  In the paper discharge device of the printer described as the second conventional technique, a paper reservoir 74 is formed in the presenter mechanism 71 by a space portion without a ceiling. As a means for curving the sheet 52, only a guide plate 75 having a U-shaped cross section is provided.

  Therefore, the present invention aims to provide a discharge outlet structure with a cover that improves the drawbacks of the two conventional techniques and prevents paper jamming in a printer that achieves the following object.

  (1) Even if a paper jam occurs in the printer, the detection device is not operated immediately, a slight paper jam is allowed, and the detection device is operated when the paper jam exceeds a predetermined amount. Do not operate unnecessarily or unnecessarily.

  (2) The printer outlet cover structure is simple.

  (3) The length from the leading edge to the trailing edge of the paper is considerably short. (Depending on the printer type and size, as an example, about 50 mm)

  The present invention employs the following means in order to solve the above problems. In addition, the code | symbol attached | subjected to the member site | part of an Example is entered after the structure of this invention.

  1. A main body 2 of the printer 1 is provided with a discharge port 2a for paper 17, a lower guide plate 8 is installed below the discharge port 2a, and an upper guide plate 9 is installed on the upper side. A reservoir 10 for the paper 17 discharged from the discharge port 2a is formed between the upper guide plates 9, and a cover 11 is suspended from the upper guide plate 9 so as to be rotatable about an axis 12. If the sheet 17 discharged from the discharge port 2 a does not hit the obstacle 18, it is discharged from between the lower guide plate 8 and the cover 11, and when it hits the obstacle 18, A discharge port structure with a cover that prevents paper jamming in a printer that is curved and contacts the cover.

  2. 2. The printer according to claim 1, wherein the cover 11 is rotatable in the direction of the discharge port 2a up to a suspended position, and is given a rotational moment in the direction of the discharge port 2a about the shaft 12 by a spring. Ejector structure with cover to prevent paper jams.

  3. When the cover 11 rotates in a direction opposite to the direction of the discharge port 2a by a predetermined angle or more, the sensor 13 detects a protrusion 11a provided on the cover 11 or a member that operates in synchronization with the rotation of the cover 11, The discharge port structure with a cover for preventing a paper jam in the printer according to the above 1, wherein the operation of the printer 1 is stopped or notified.

  4). The main body 2 of the printer 1 is provided with a paper discharge port 2a, a lower guide plate 8 'is installed below the discharge port 2a, and an upper guide plate 9' is installed on the upper side. 'And the upper guide plate 9' are formed with a reservoir 10 for the paper 17 discharged from the discharge port 2a. The lower guide plate 8 'has a cover 11' centered on the shaft 12 '. The paper 17 that is rotatably supported and discharged from the discharge port 2 a is discharged from between the upper guide plate 9 ′ and the cover 11 ′ unless it hits the obstacle 18. A discharge outlet structure with a cover that prevents paper jamming in a printer that is curved in the reservoir 10 and abuts against the cover 11 ′ when abutting.

  5. 5. The cover-attached discharge port structure for preventing a paper jam in the printer according to 4, wherein the cover 11 ′ has elasticity to maintain a supported position when a load applied from the paper 17 is a predetermined value or less.

  6). The cover 11 ′ is rotatable in the direction of the discharge port 2a up to a supported position, and is provided with a rotational moment in the direction of the discharge port 2a about the shaft 12 ′ by a spring. Ejector structure with a cover to prevent paper jams in printers.

  7). When the cover 11 'rotates in a direction opposite to the direction of the discharge port 2a by a predetermined angle or more, the sensor 13 detects a protrusion provided on the cover 11' or a member that operates in synchronization with the rotation of the cover 11 '. 5. A discharge port structure with a cover for preventing paper jam in the printer according to 4 above, wherein the operation of the printer 1 is stopped or notified.

  8). 5. The discharge port structure with a cover for preventing the paper jam in the printer according to the above 1 or 4, wherein the cover 11, 11 'is transparent.

  As is apparent from the description of the specification, the present invention has the following effects.

  1. Even if a paper jam occurs in the printer, the detection device is not operated immediately, but a slight paper jam is allowed, and the detection device is operated when the paper jam exceeds a predetermined amount. Does not work.

  2. The discharge port structure with the cover of the printer is simple.

  3. The length from the leading edge to the trailing edge of the paper is considerably shorter than the conventional technology. (Depending on the printer type and size, as an example, about 50 mm)

  4). When the cover rotates in a direction opposite to the outlet direction by a predetermined angle or more, the sensor detects a protrusion provided on the cover or a member that operates in synchronization with the rotation of the cover, and stops or notifies the operation of the printer. Safe and convenient.

  5. Since the cover is transparent, it is possible to visually recognize the paper jam condition in the reservoir.

  Two embodiments of the cover-equipped discharge port structure for preventing paper jam in the printer of the present invention will be described.

  A cover-equipped discharge port structure for preventing a paper jam in the printer of Embodiment 1 of the present invention will be described with reference to FIGS.

  FIG. 1 is a cross-sectional view showing a state in which the receipt paper is normally discharged from the discharge port of the main body of the receipt printer. FIG. 2 is a cross-sectional view of an initial state in which the receipt paper discharged from the discharge port of the main body of the receipt printer is jammed. FIG. 3 is a cross-sectional view showing a state in which the paper jam of the receipt paper discharged from the discharge port of the main body of the receipt printer has further progressed.

  In FIG. 1, a roll paper 16 is rotatably supported on a main body 2 of a receipt printer 1 by several bearings 3. The receipt paper 17 fed out from the roll paper 16 is conveyed by the paper feed roller 4, cut to a required length by the cutter 6 of the cutter unit 5, and discharged from the discharge port 2 a. A flapper 7 is installed near the inside of the discharge port 2 a in the main body 2, and the flapper 7 detects a paper jam of the receipt paper 17.

  A lower guide plate 8 having a substantially U-shaped cross section is installed below the discharge port 2a in the main body 2, and an upper guide plate 9 having a substantially L-shaped cross section is disposed above the discharge port 2a in the main body 2. Is installed. A reservoir 10 for receipt paper 17 is formed between the lower guide plate 8 and the upper guide plate 9. A cover 11 is rotatably attached to the protrusion 9 a of the upper guide plate 9 by a shaft 12.

  If the cover 11 is made of a transparent material, the vicinity of the discharge port 2a can be visually recognized from the outside. The cover 11 is suspended at the position shown in FIG. 1 by its own weight, or is given a clockwise rotational moment about the shaft 12 around the shaft 12 by a torsion spring or the like (not shown).

  In a normal state, the receipt paper 17 is discharged from the discharge port 2a in the direction of the arrow in FIG.

  When the leading edge of the receipt paper 17 discharged from the discharge port 2a hits an obstacle (a customer's finger or product) 18 and a paper jam occurs, the receipt paper 17 is initially stored as shown in FIG. 10 is curved and comes into contact with the cover 11. When the paper jam of the receipt paper 17 further proceeds, as shown in FIG. 3, the cover 11 is pushed up by the waist of the receipt paper 17 and rotated counterclockwise about the shaft 12 in the direction of the arrow.

  A design change example of the first embodiment will be described with reference to FIGS.

  When the cover 11 rotates counterclockwise by a predetermined angle or more, the protrusion 11a provided on the cover 11 (or a member that operates in synchronization with the rotation of the cover 11) is moved to a sensor (microswitch, optical sensor, (Magnetic sensor etc.) 13 detects. Then, the operation of the receipt printer 1 is stopped, or a store clerk or customer is notified by a buzzer or a lamp.

  A cover-equipped discharge port structure for preventing a paper jam in the printer according to the second embodiment of the present invention will be described with reference to FIGS.

  In the second embodiment, description of the same points as in the first embodiment will be omitted, and different points will be described.

  FIG. 6 is a cross-sectional view of a state in which the receipt paper is normally discharged from the discharge port of the main body of the receipt printer. FIG. 7 is a cross-sectional view of an initial state where the receipt paper discharged from the discharge port of the main body of the receipt printer is jammed. FIG. 8 is a cross-sectional view showing a state where the paper jam of the receipt paper discharged from the discharge port of the main body of the receipt printer has further progressed.

  A lower guide plate 8 ′ having a substantially L-shaped cross section is installed below the discharge port 2 a in the main body 2, and an upper guide plate having a substantially H-shaped cross section is disposed above the discharge port 2 a in the main body 2. 9 'is installed. A reservoir 10 for receipt paper 17 is formed between the lower guide plate 8 'and the upper guide plate 9'. A cover 11 ′ is rotatably attached to the protrusion 8 ′ a of the lower guide plate 8 ′ by a shaft 12 ′.

  If the cover 11 'is made of a transparent material, the vicinity of the discharge port 2a can be visually recognized from the outside. The cover 11 ′ has elasticity to maintain the position of FIG. 6 when the load applied from the receipt paper 17 is a predetermined value or less, or the position of FIG. 6 is centered on the shaft 12 ′ by a torsion spring or the like (not shown). A counterclockwise rotational moment is given to the limit.

  In a normal state, the receipt paper 17 is discharged from the discharge port 2a in the direction of the arrow in FIG.

  When the leading edge of the receipt paper 17 discharged from the discharge port 2a hits an obstacle (customer's finger or product) 18 and a paper jam occurs, the receipt paper 17 is initially stored as shown in FIG. 10 is curved and comes into contact with the cover 11 '. Further, when the paper jam of the receipt paper 17 progresses, as shown in FIG. 8, the cover 11 'is pushed down by the waist of the receipt paper 17 and rotated rightward in the direction of the arrow about the shaft 12'.

  Also in the second embodiment, when the cover 11 ′ rotates to the right by a predetermined angle or more, the design is changed in the same manner as in the first embodiment, and the operation of the receipt printer 1 is stopped by the sensor detection, or a buzzer or a lamp is used. It is possible to notify the store clerk and customers.

FIG. 3 is a cross-sectional view of a state in which the receipt paper is normally discharged from the discharge port of the main body of the receipt printer of Embodiment 1 of the present invention. FIG. 6 is a cross-sectional view of an initial state in which the receipt paper discharged from the discharge port is jammed. FIG. 6 is a cross-sectional view of a state where the paper jam of the receipt paper discharged from the discharge port has further progressed. FIG. 6 is a cross-sectional view of a cover closed state of a design change example of Embodiment 1. It is sectional drawing of the cover open state of the example of the design change. It is sectional drawing of the state in which the receipt paper is normally discharged | emitted from the discharge port of the main body of the receipt printer of Example 2 of this invention. FIG. 6 is a cross-sectional view of an initial state in which the receipt paper discharged from the discharge port is jammed. FIG. 6 is a cross-sectional view of a state where the paper jam of the receipt paper discharged from the discharge port has further progressed. It is a schematic side view of self POS. It is sectional drawing of the principal point of the impeller-type receipt conveyance and holding mechanism (this applicant applied previously) in the printer which is the conventional 1st technique. It is sectional drawing of the principal point of the paper discharge apparatus of the printer which is the conventional 2nd technique, and shows the initial state in which the paper jam of the receipt paper produced. FIG. 4 is a cross-sectional view of the main points of the paper discharge device of the printer, showing a state where the paper jam of the receipt paper has further advanced.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Receipt printer 2 Main body 2a Discharge port 3 Axis 4 Paper feed roller 5 Cutter unit 6 Cutter 7 Flapper 8 Lower guide plate 8 'Lower guide plate 8'a Protrusion 9 Upper guide plate 9' Upper guide plate 9a Protrusion DESCRIPTION OF SYMBOLS 10 Reservoir 11 Cover 11 'Cover 11a Protrusion 12 Axis 12' Axis 13 Sensor 16 Roll paper 17 Receipt paper 18 Obstacle

Claims (8)

The printer body has a paper outlet,
A lower guide plate and an upper guide plate are installed below the discharge port and the upper guide plate, respectively, and a reservoir for the paper discharged from the discharge port is formed between the lower guide plate and the upper guide plate. ,
A cover is suspended from the upper guide plate so as to be rotatable about an axis,
The paper discharged from the discharge port is discharged from between the lower guide plate and the cover if it does not hit the obstacle, and when it hits the obstacle, the paper is bent in the reservoir and hits the cover. A discharge outlet structure with a cover for preventing a paper jam in a printer characterized by contacting.   2. The cover is capable of rotating in the direction of the discharge port up to a position where it is suspended, and is provided with a rotational moment in the direction of the discharge port about the axis by a spring. Ejector structure with a cover to prevent paper jams in printers.   When the cover rotates in a direction opposite to the discharge port direction by a predetermined angle or more, a sensor detects a protrusion provided on the cover or a member that operates in synchronization with the rotation of the cover, and stops the operation of the printer. The discharge port structure with a cover for preventing a paper jam in the printer according to claim 1. The printer body has a paper outlet,
A lower guide plate and an upper guide plate are installed below the discharge port and the upper guide plate, respectively, and a reservoir for the paper discharged from the discharge port is formed between the lower guide plate and the upper guide plate. ,
A cover is supported on the lower guide plate so as to be rotatable about an axis,
The paper discharged from the discharge port is discharged from between the upper guide plate and the cover if it does not hit the obstacle, and when it hits the obstacle, the paper is bent in the reservoir and hits the cover. A discharge port structure with a cover for preventing a paper jam in a printer.   5. The discharge port structure with a cover for preventing a paper jam in a printer according to claim 4, wherein the cover has elasticity to maintain a supported position when a load applied from the paper is a predetermined value or less.   5. The cover is capable of rotating in the direction of the discharge port up to a supported position, and is given a rotational moment in the direction of the discharge port about the axis by a spring. Ejector structure with a cover to prevent paper jams in printers.   When the cover rotates in a direction opposite to the discharge port direction by a predetermined angle or more, a sensor detects a protrusion provided on the cover or a member that operates in synchronization with the rotation of the cover, and stops the operation of the printer. 5. A discharge port structure with a cover for preventing a paper jam in a printer according to claim 4, wherein:   5. The discharge port structure with a cover for preventing a paper jam in a printer according to claim 1, wherein the cover is transparent.

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