JP2009073634A - Printer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a printer capable of safely discharging a jammed printing paper sheet with simple operation when a printing paper sheet is jammed in a conveying mechanism. <P>SOLUTION: This printer comprises a conveying mechanism 10 for delivering a printed paper sheet 27 to a delivery opening 1, a driving section (a conveyance driving motor 14) for driving the conveying mechanism 10 and a delivery dial 24 for delivering the printing paper sheet 27 to the delivery opening 1 by driving the conveying mechanism 10 separately from the driving section (the conveyance driving motor 14) in the case wherein the printing paper sheet 27 is jammed in the conveying mechanism 10. In this printer, the delivery dial 24 is fitted to a position possible to be manually operated from the outside of a casing. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a printer, and more particularly to a printer capable of discharging a jammed printer paper.

  The printer prints a desired image on the printer paper fed from the paper feed tray, and discharges the printed printer paper to the paper discharge port by the transport mechanism. However, in the printer, there is a case where the printer paper is jammed in the transport mechanism in the process of being discharged from the discharge port for various reasons. When a paper jam occurs when a part of the print paper is ejected from the paper discharge port, the user can easily remove the paper jam by pulling the part.

  On the other hand, if the print paper stops inside the printer and the print paper cannot be seen from the paper discharge port, the conventional printer forcibly removes the top panel of the chassis and manually moves the drive system to force the print paper to the paper discharge port. Had to be removed. Further, in the printer described in Patent Document 1, a cover is provided in the middle of the paper discharge path, and when a paper jam occurs, the cover must be removed and a hand placed near the drive system to remove the print paper. There wasn't.

JP 2005-96999 A

  However, with a conventional printer, if the paper is jammed when the print paper is not visible from the paper exit, remove the top panel of the housing and manually rotate the pulley of the transport mechanism to force the print paper to be ejected. Because of this, it has been very troublesome to remove the jammed print paper. In addition, when a paper jam occurs, it is necessary to insert the user's hand in the vicinity of the drive mechanism drive system, which may cause safety problems or forcefully damage the drive mechanism parts of the transport mechanism. was there. In addition, in a printer used for business use, the installation location is fixed, and it may be difficult to perform the above operation by moving the printer itself.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a printer that can easily discharge a jammed print sheet with a simple operation when the sheet is jammed in the transport mechanism.

  The solution according to the present invention includes a transport mechanism that discharges printed print paper to a paper discharge port, a drive unit that drives the transport mechanism, and a print paper that has jammed in the transport mechanism. In this case, a paper discharge dial for driving the transport mechanism to discharge the print paper to the paper discharge port is provided, and the paper discharge dial is attached to a position where it can be manually operated from the outside of the housing.

  In the printer according to the present invention, since the discharge dial that drives the transport mechanism to discharge the jammed print paper to the discharge outlet is attached at a position where it can be manually operated from the outside of the housing, the user can set the discharge dial. The jammed print paper can be removed easily and safely by turning the paper discharge dial with an appropriate force, and the mechanical parts are not damaged. .

  Before describing the configuration of the printer according to the present embodiment, the configuration of the premised printer will be described. FIG. 9 is a perspective view of the printer as a premise, and FIG. 10 is a side view of the printer as a premise. In the printer shown in FIG. 9, a paper discharge port 101 is provided on the front surface (printer front portion 100) of the housing, and the top panel 102 of the housing can be removed. FIG. 10 illustrates a configuration in which a transport mechanism 110 that discharges the printer paper 103 to the paper discharge port 101 is provided.

  Further, in order to describe the transport mechanism 110 in detail, FIG. 11 is a perspective view of the transport mechanism 110, and FIG. 12 is a side view of the transport mechanism 110. As shown in FIG. 11, in the transport mechanism 110, the power of the transport drive motor 111 is transmitted to the pulley gear 113 via the gear 112 and rotates the pulley 115 via the pulley belt 114. When the pulley 115 shown in FIG. 11 rotates, the drive shaft roller 116 directly connected to the pulley 115 is driven. In FIG. 12, the rotation directions of the gear 112, the pulley gear 113, the pulley belt 114, and the pulley 115 are indicated by arrows.

  FIG. 12 shows a state in which the printer paper 103 is conveyed in the direction of the paper discharge rollers 118 and 119 by the frictional force between the drive shaft roller 116 and the paper discharge shaft roller 117. Further, in FIG. 12, the paper discharge rollers 118 and 119 rotate as indicated by arrows to discharge the printer paper 103 in the paper discharge direction. Note that when a paper jam occurs in the transport mechanism 110 shown in FIGS. 11 and 12, the drive torque transmitted from the transport drive motor 111 is insufficient, and the print paper 103 stops inside the housing. Therefore, in the printer shown in FIG. 9, it is necessary to remove the jammed printer paper using the method described in the column “Problems to be Solved by the Invention”.

  However, in the printer according to the present invention, it is not necessary for the user to remove the outline of the housing and manually move the drive mechanism of the transport mechanism to remove the jammed print paper, and remove the lid in the middle of the paper discharge path. There is no need to put the hand inside the mechanism and remove the jammed print paper. In the printer according to the present invention, the paper discharge dial provided on the printer front unit 100 is rotated to drive the drive system of the transport mechanism connected to the paper discharge dial to remove the jammed print paper. Hereinafter, specific forms of the printer according to the present invention will be described.

(Embodiment)
FIG. 1 is a perspective view of the printer according to the present embodiment, and FIG. 2 is a side view of the printer according to the present embodiment. First, the printer shown in FIG. 1 has a configuration in which a paper discharge port 1 is provided on the front surface (printer front portion 12) of the housing, and a paper feed tray 13 is provided below the paper discharge port 1. As shown in FIG. 2, in the printer according to the present embodiment, the discharge gear 22 of the transport mechanism 10 is engaged with the discharge dial 24 via the gear idler 23. Then, when the dial door 25 shown in FIG. 2 is opened, a part of the paper discharge dial 24 comes out of the printer front unit 12, and the user can easily turn the paper discharge dial 24. Therefore, the printer shown in FIG. 2 can drive the transport mechanism 10 and can discharge the jammed print paper.

  Next, the transport mechanism 10 according to the present embodiment will be described in detail. First, FIG. 3 is a perspective view of the transport mechanism 10 according to the present embodiment, FIG. 4 is a left side view of the transport mechanism 10 according to the present embodiment, and FIG. 5 is a diagram of the transport mechanism 10 according to the present embodiment. A front view is shown, and FIG. 6 is a right side view of the transport mechanism 10 according to the present embodiment.

  In the normal paper ejection drive in the transport mechanism 10 according to the present embodiment, the drive torque of the transport drive motor 14 rotates the pulley 17 and the pulley 19 through the gear 15 and the pulley belt 16 as indicated by the arrows in FIG. Let The torque transmitted to the pulley 19 drives the drive shaft roller 20 directly connected to the pulley 19, and conveys the print paper 27 in the direction of the drive shaft roller 18 by the frictional force between the drive shaft roller 20 and the paper discharge shaft roller 21. .

  Similarly, the torque transmitted to the pulley 17 drives the drive shaft roller 18 directly connected to the pulley 17, and the print paper 27 is discharged in the paper discharge direction shown in FIG. 4 by the frictional force of the drive shaft roller 18. 4 is provided at the end of the paper discharge direction shown in FIG. 4, and the print paper 27 discharged from the paper discharge outlet 1 is stacked on the paper feed tray 13 shown in FIG. Is done.

  Further, in the transport mechanism 10 according to the present embodiment, in addition to the normal paper discharge drive mechanism described above, the drive shaft roller 18 is disposed on the opposite side of the pulley 17 driven by the transport drive motor 14 as shown in FIG. A directly connected paper discharge gear 22 is provided. A gear idler 23 and a paper discharge dial 24 are engaged with the paper discharge gear 22 as shown in FIG. Therefore, when the paper discharge dial 24 is rotated, the gear idler 23 and the paper discharge gear 22 are rotated to drive the drive shaft roller 18.

  When the drive shaft roller 18 is driven, the pulley 17 directly connected to the drive shaft roller 18 rotates, and the pulley 19 also rotates via the pulley belt 16. The drive shaft roller 20 is driven by the rotation of the pulley 19. That is, as shown in FIG. 6, when the paper discharge dial 24 is rotated in the direction of the arrow, the gear idler 23 and the paper discharge gear 22 are rotated in the direction of the arrow, and the drive shaft roller 20 and the paper discharge shaft roller 21 are in the direction of the arrow. Driven in the direction.

  Further, since the paper discharge gear 22, the gear idler 23, and the paper discharge dial 24 are arranged toward the front of the printer main body (printer front portion 12) as shown in FIG. 2, a paper jam of the print paper 27 occurs. The user can also easily access the paper discharge dial 24 when rotating it. In particular, the printer shown in FIG. 1 has a design in which the printer front portion 12 protrudes forward so that the paper discharge gear 22, the gear idler 23, and the paper discharge dial 24 can be stored.

  The paper discharge dial 24 is rotated by torque transmission from the transport drive motor 14 even when the print paper 27 is normally discharged, and the user carelessly accesses the rotating paper discharge dial 24. It is assumed that it will be pinched or caught. For this reason, in the printer according to the present embodiment, a dial door 25 is provided at the arrangement portion of the paper discharge dial 24 of the printer front unit 12 as shown in FIG. When the user uses the paper discharge dial 24, the dial door 25 is opened as shown in FIG. Further, a dial cover 26 as shown in FIG. 8 is provided on the paper discharge dial 24 so that the user's finger is not caught in the paper discharge dial 24.

  Next, an operation when the printer paper 27 is jammed in the printer according to the present embodiment will be described. First, when a paper jam occurs, the user turns off the printer, turns off the conveyance drive motor 14, and removes the paper feed tray 13 attached to the printer. The printer according to the present embodiment employs a physical interlock structure in which the dial door 25 does not open unless the paper feed tray 13 is removed so that the dial door 25 does not open during normal operation. Further, the printer according to the present embodiment employs an electrically safe design in which the conveyance drive motor 14 is stopped by removing the paper feed tray 13 even if the user forgets to turn off the printer.

  Next, the dial door 25 is opened, and a manual torque generated when the user rotates the paper discharge dial 24 with his / her finger rotates the paper discharge gear 22 via the gear idler 23 and is directly connected to the paper discharge gear 22. The pulley 17 is rotated via the roller 18. Further, the rotation of the pulley 17 is transmitted to the pulley 19 via the pulley belt 16 and drives the drive shaft roller 20 directly connected to the pulley 19. When the drive shaft roller 20 is driven, the jammed print paper 27 is discharged from the discharge port 1 by the frictional force between the drive shaft roller 20 and the discharge shaft roller 21.

  As described above, the printer according to the present embodiment can easily rotate the torque discharge gear 24 for the jammed print paper 27 that cannot be automatically discharged by the torque of the transport drive motor 14 due to a defective printing operation. Can be discharged. Note that the gear ratios of the torque discharge gear 24, the gear idler 23, and the discharge gear 22 are set so that the user can rotate the torque discharge gear 24 with an appropriate force.

1 is a perspective view of a printer according to an embodiment of the present invention. 1 is a side view of a printer according to an embodiment of the present invention. It is a perspective view of the conveyance mechanism which concerns on embodiment of this invention. It is a left view of the conveyance mechanism which concerns on embodiment of this invention. It is a front view of the conveyance mechanism which concerns on embodiment of this invention. It is a right view of the conveyance mechanism which concerns on embodiment of this invention. It is a figure for demonstrating the dial door which concerns on embodiment of this invention. It is a figure for demonstrating the dial door which concerns on embodiment of this invention. 1 is a perspective view of a printer as a premise of the present invention. 1 is a side view of a printer as a premise of the present invention. It is a perspective view of the conveyance mechanism used as the premise of this invention. It is a side view of the conveyance mechanism used as the premise of this invention.

Explanation of symbols

  1,101 paper discharge port, 10,110 transport mechanism, 12,100 printer front part, 13 paper feed tray, 14,111 transport drive motor, 15,112 gear, 16,114 pulley belt, 17, 19, 115 pulley, 18, 20, 116 Drive shaft roller, 21,117 Paper discharge shaft roller, 22 Paper discharge gear, 23 Gear idler, 24 Paper discharge dial, 25 Dial door, 26 Dial cover, 27, 103 Printer paper, 102 Top panel, 113 Pulley gear, 118, 119 paper discharge roller.

Claims (6)

A transport mechanism for discharging printed print paper to a paper discharge port;
A drive unit for driving the transport mechanism;
In addition to the drive unit, a paper discharge dial that drives the transport mechanism to discharge the print paper to the paper discharge port when the print paper is jammed in the transport mechanism.
The printer, wherein the paper discharge dial is attached to a position where it can be manually operated from outside the housing. The printer according to claim 1,
The transport mechanism is
First and second pulleys in which the driving torque of the driving unit is transmitted via a gear and a pulley belt;
A first drive shaft roller directly connected to the first pulley and rotated by the drive torque transmitted to the first pulley;
A paper discharge shaft roller that conveys the print paper by a frictional force with the first drive shaft roller;
A second drive shaft roller directly connected to the second pulley and rotated by the drive torque transmitted to the second pulley;
The printer, wherein the print sheet conveyed by the first drive shaft roller and the discharge shaft roller is discharged to the discharge port by a frictional force with the second drive shaft roller. The printer according to claim 2,
The second drive shaft roller includes a paper discharge gear on a side opposite to the side on which the second pulley is provided,
The printer, wherein the paper discharge dial rotates the paper discharge gear to drive the first and second drive shaft rollers to discharge the jammed print paper. The printer according to claim 3,
The paper discharge dial includes a gear idler between the paper discharge gear,
A gear ratio of the discharge dial, the discharge gear, and the gear idler is set so that the first and second drive shaft rollers can be driven by applying a predetermined force to the discharge dial. And printer. A printer according to any one of claims 1 to 4, wherein
The printer, wherein the paper discharge dial is provided at a front portion of the housing. A printer according to any one of claims 1 to 5,
The housing includes a cover portion that covers the discharge dial,
The printer according to claim 1, wherein the cover portion can be opened only when a paper feed tray mounted on the housing is removed, and the paper discharge dial can be operated.

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