JP2008044287A - Medium discharge mechanism - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem a conventional receipt printer may cause a medium jam due to collision of front end of the medium with the end surface of a discharge port when the front end of the medium to be discharged is warped up, or the medium runs wavily. <P>SOLUTION: The medium discharge mechanism is constituted of: a roll medium; printing section for making printing on the medium: a cutter for cutting the roll medium with one point left uncut (a cutting method for perforating the medium so that it is not cut off completely to allow an end user or the like to separate it later with his/her bare hands); the discharge port located on an inner side than the end user operating section of the printer, and in front of the cutter; and a paper guide for preventing the hand of the end user from directly reaching the discharge port. The mechanism comprises a cutter for entirely cutting a medium instead of the cutter for cutting the medium with one point left uncut and a receipt receiving section for receiving a cut receipt, provided below the paper guide. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a mechanism for discharging a medium such as a receipt in a receipt printer such as a certificate issuing machine.

  Receipt printers for printing and issuing receipts are installed in cash registers at retail stores, certificate issuing machines installed in municipalities, schools, and the like. Some receipt printers employ a structure in which a medium used for a receipt is stocked in a roll shape, and is sequentially discharged from a discharge port every time printing is performed. In these apparatuses, when the roll-shaped medium is discharged, the medium may be jammed (so-called jam) in the vicinity of the discharge port due to bending or the like, and a method for solving the problem is also proposed. .

  For example, in Patent Document 1 (Japanese Patent Application Laid-Open No. 63-204391), since the medium to be ejected is locked by the claw member, it becomes clear at a glance that the medium has not been cut, and the end user has the medium before the cut. Discloses a method for preventing receipt printing failure and receipt printer destruction caused by pulling.

  Further, in Patent Document 2 (Japanese Patent Laid-Open No. 6-336060), a printing mechanism is positioned below the medium, a receipt issuing port is positioned below the printing mechanism, and the receipt paper is sequentially moved from top to bottom according to its own weight. A method of reducing jamming of a medium by conveying is disclosed.

JP 63-204391 A JP-A-6-336060

  Conventionally, in a receipt printer, if the leading edge of the ejected medium is warped or the medium is wavy during traveling, the leading edge of the medium may collide with the end face of the ejection port, and the medium may jam. is there. One way to solve this problem is to integrate the media travel path located between the discharge port and the roll paper cutting part (cutter) with the discharge port so that the end of the medium and the end surface of the discharge port do not collide. Or a structure where both are in contact with each other is conceivable. However, in this case, while the medium is being discharged, the end user may pull out the medium by itself before the medium is cut, which may result in printing failure, worst case, and destruction of the receipt printer.

  The present invention is a means for solving the above-described problems in the prior art. In the receipt printer, even when the front end of the medium is slightly warped or the medium is wavy during traveling, the medium jam is prevented and the medium is prevented. This is a medium discharging mechanism that can prevent the user from forcibly pulling out the medium during discharging.

  The roll-shaped medium, the printing unit for printing on the roll-shaped medium, and the roll-shaped medium are cut by leaving one point (not cut completely, so that the end user or the like can be easily separated with bare hands later, so intermittent Cutting method), a discharge port located in front of the cutter from the end user operation unit and in front of the cutter, and paper for preventing the end user's hand from reaching the discharge port directly It is configured with a guard. Further, the present invention is characterized in that a cutter that cuts the entire medium in place of the cutter that cuts the remaining one point and a receipt portion for the cut receipt are provided below the paper guard.

  By applying the medium discharge mechanism of the present invention to a receipt issuing device or the like, it is possible not only to prevent the occurrence of a jam caused by a medium in a state of warping or undulations colliding with a discharge port or a conveyance path, but also at the end. Printing errors and destruction of the receipt printer due to user error will not occur, and operation of the operation unit will not be hindered.

  Hereinafter, the best mode for carrying out the present invention will be described in detail.

  1 and 2 are cross-sectional views showing a medium discharge mechanism of a receipt printer according to an embodiment of the present invention. FIG. 1 shows before receipt printing and FIG. 2 shows after receipt printing. 3 and 4 are each an inclined view, FIG. 3 shows before receipt printing, and FIG. 4 shows after receipt printing.

  In the present invention, as shown in the cross-sectional view of FIG. 1, the medium 1 stacked in a roll shape for printing the contents of the receipt, the printing unit 2 for printing on the medium 1, and the medium 1 are cut with one point remaining ( The cutter 3 is provided with an intermittent cut), a discharge port 4 positioned in front of the cutter 3, and a paper guard 5 that prevents the end user from directly touching the vicinity of the discharge port 4.

  When the amount of the medium 1 is small and curled, the front end 6 of the medium easily collides with the end face of the discharge port 4, so that jamming tends to occur. For this reason, the vertical length B of the discharge port needs to be long enough so that the front end 6 of the medium and the discharge port 4 do not collide when the medium 1 is most curled. Alternatively, as illustrated in FIG. 7, the end of the lower plate 20 of the discharge port may be on the back side of the apparatus with respect to the cutter 3.

  In addition, as shown in FIG. 2, the length A of the paper guard 5 in the vertical direction is such that the receipt jump-out length from the paper guard becomes C> 0 when printing on the medium, running, and cutting by the cutter 3 are completed. It needs to be length. This is because when the receipt printing is performed, the medium 1 is cut by the cutter 3 after a predetermined printing and running by the printing unit 2, and one end is cut by the cutter 3. This is for picking up and pulling out. In FIG. 3, a groove 9 is provided as an example for facilitating the end user to pinch the tip 6 of the receipt that has jumped out of the paper guard 5.

  When the length of the vertical direction of the discharge port is made sufficiently large, jamming due to collision between the end surface of the discharge port and the front end 6 of the medium 1 does not occur, and when receipt printing and cutting by the cutter 3 are finished Thus, since the leading edge of the medium 1 protrudes from the paper guard, it is possible to prevent printing defects and medium jams that occur when the end user pulls out during printing.

  5 and 6 are cross-sectional views showing the medium discharge mechanism of the receipt printer according to the embodiment of the present invention, respectively. FIG. 5 shows before receipt printing and FIG. 6 shows after receipt printing.

  In the second embodiment, in addition to the configuration described in the first embodiment, a receiving portion 7 that receives the cut receipt 8 is provided. The length E in the vertical direction and the length D in the depth direction of the receiving unit 7 are set to be long enough to receive a receipt in a state where the remaining amount of the medium 1 is small and the medium is most curled. During receipt printing, the medium 1 is completely cut by the cutter 3 after predetermined printing and running by the printing unit 2. The end user receives the receipt 8 that has fallen on the receiving unit 7.

  Also in the present embodiment, the length of the vertical direction of the discharge port is made sufficiently large so that a jam caused by the collision between the end surface of the discharge port and the front end 6 of the medium 1 does not occur, and the paper guard 5 and the receiving device are received. Since the end user receives the receipt 8 after the receipt printing and the cutting by the cutter 3 are finished and the receipt 8 has dropped on the receiving portion 7, the end user receives the receipt 8 and is generated during the printing. Printing defects and medium jams can be prevented.

It is sectional drawing which shows an example of the medium discharge | emission mechanism of this invention. It is sectional drawing which shows an example of the medium discharge | emission mechanism of this invention. It is a perspective view which shows an example of the medium discharge mechanism of this invention. It is a perspective view which shows an example of the medium discharge mechanism of this invention. It is sectional drawing which shows another example of the medium discharge | emission mechanism of this invention. It is sectional drawing which shows another example of the medium discharge | emission mechanism of this invention. It is sectional drawing which shows an example of the medium discharge | emission mechanism of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Medium, 2 ... Printing part, 3 ... Cutter, 4 ... Discharge port, 5 ... Paper guard, 6 ... Tip, 7 ... Receiving part, 8 ... Receipt, 9 ... groove, A ... Vertical length of the paper guard, B ... Vertical length of the discharge port, C ... Lake-out length of the receipt, D ... Reception portion Length in the depth direction, E ... Length in the vertical direction of the receiving part

Claims (8)

Cutting means for intermittently cutting the medium loaded in the apparatus;
A discharge port for discharging the intermittently cut medium out of the apparatus;
A medium protection unit configured to cover the discharge port from the outside of the apparatus and discharge a medium from the discharge port from a vertically lower gap;
A medium discharge mechanism comprising: The medium discharge mechanism according to claim 1,
A medium discharging mechanism, wherein the medium loaded in the apparatus is in a roll shape. The medium discharge mechanism according to claim 2,
The medium discharge mechanism according to claim 1, wherein the vertical length of the discharge port has such a length that the front end does not collide with the side wall of the discharge port when the medium curled downward in the vertical direction is discharged. The medium discharge mechanism according to claim 2,
The medium discharge mechanism according to claim 1, wherein a side wall of the discharge port that is vertically lower than the cutter protrudes further toward the back of the apparatus than the cutter. Cutting means for cutting the medium loaded in the apparatus;
A discharge port for discharging the intermittently cut medium out of the apparatus;
A medium protection unit configured to cover the discharge port from the outside of the apparatus and discharge a medium from the discharge port from a vertically lower gap;
Receiving means for receiving the cut medium discharged from the discharge port;
A medium discharge mechanism comprising: The medium discharge mechanism according to claim 5,
A medium discharging mechanism, wherein the medium loaded in the apparatus is in a roll shape. The medium discharge mechanism according to claim 6,
The medium discharge mechanism according to claim 1, wherein the vertical length of the discharge port has such a length that the front end does not collide with the side wall of the discharge port when the medium curled downward in the vertical direction is discharged. The medium discharge mechanism according to claim 6,
The medium discharge mechanism according to claim 1, wherein a side wall of the discharge port that is vertically lower than the cutter protrudes further toward the back of the apparatus than the cutter.

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