JP6447248B2 - printer - Google Patents

Description

  The present invention relates to a roll paper printer including an opening / closing cover that opens and closes a recording paper storage unit that stores recording paper.

  A roll paper printer that prints on long recording paper fed out of roll paper is a printer main body with a roll paper storage section (recording paper storage section), and attached to the printer main body section to open and close the roll paper storage section. An open / close cover is provided. The roll paper printer also includes a paper discharge port formed between the printer main body and the open / close cover when the open / close cover is disposed at a closed position for closing the roll paper storage unit.

  In such a roll paper printer, when the open / close cover is closed, a paper transport path is formed from the roll paper storage section to the paper discharge port via the print position by the print head. The road becomes open. Therefore, open the open / close cover, put the roll paper with the recording paper pulled out into the roll paper storage unit, and then close the open / close cover, then set the roll paper with the recording paper pulled out along the paper transport path it can.

  Here, the printer described in Patent Document 1 includes a detection mechanism that detects that the open / close cover is disposed at the closed position. The detection mechanism is provided in the printer main body. The detection mechanism detects the open / close cover on one side in the paper width direction of the recording paper conveyed on the paper conveyance path (one side of the paper conveyance path).

JP 2002-46322 A

In a printer in which the detection mechanism is provided on one side of the paper conveyance path, the opening / closing cover may not be completely closed even if the detection mechanism detects that the opening / closing cover is disposed at the closed position. For example, when the opening / closing cover disposed at the closed position is inclined from a predetermined posture, the end portion on one side of the paper conveying path in the opening / closing cover has reached the closed position, whereas the paper conveying path The end portion on the other side may be spaced from the closed position. In this case, the detection mechanism detects that the open / close cover is positioned at the closed position, but the open / close cover is not completely closed. Here, if the open / close cover is not completely closed, the paper conveyance path is not completely formed. Therefore, a paper jam may occur in the recording paper transported along the paper transport path.
In view of the above, an object of the present invention is to provide a roll paper printer that can detect that an open / close cover that opens and closes a recording paper storage unit is completely closed.

  In order to solve the above-mentioned problems, the present invention provides a printer for printing on recording paper, a printer main body having a recording paper storage portion for storing the recording paper, and the recording paper attached to the printer main body. An opening / closing cover for opening and closing the storage section, a paper transport path for transporting the recording paper from the recording paper storage section to a paper discharge port via a printing position by a print head, and one sandwiching the paper transport path And a detection mechanism for detecting that the opening / closing cover is disposed at the closed position on the side and the other side.

  According to the present invention, the detection mechanism detects that the open / close cover is disposed at the closed position on one side and the other side with the paper conveyance path interposed therebetween. Therefore, for example, when the open / close cover disposed at the closed position is inclined from a predetermined posture, the end portion on one side of the paper conveyance path in the open / close cover has reached the closed position. When the other end portion of the paper transport path is separated from the closed position, the detection mechanism does not detect that the opening / closing cover is in the closed position. Therefore, the detection mechanism can detect that the open / close cover is completely closed.

  In the present invention, the detection mechanism includes a first detector located on one side of the paper conveyance path, a second detector located on the other side, and a detection circuit, wherein the first detector and the second detector The detector is a switch that is operated by the opening / closing cover disposed in the closed position to form a conductive state, and the first detector and the second detector are connected to the detection circuit. Can be. In this way, the detection circuit is simple.

  In this invention, it has a conveyance roller which conveys the said recording paper along the said paper conveyance path, and the said conveyance roller shall be rotatably supported by the said opening / closing cover. In the configuration in which the conveyance roller is supported by the opening / closing cover, the conveyance roller is not disposed in an appropriate position at an appropriate position unless the opening / closing cover is completely closed. Therefore, in a state where the open / close cover is not completely closed, there is a problem that the conveyance accuracy is lowered when the recording paper is conveyed by the conveyance roller. If the conveyance accuracy of the recording paper is lowered, the printing quality is lowered. If it is detected by the detection mechanism that the open / close cover is completely closed, the conveyance of the recording paper by the transfer roller can be stopped when the open / close cover is not completely closed.

  In the present invention, the cutter has a cutter for cutting the recording paper, and the cutter includes a fixed blade, a movable blade, and a movable blade driving mechanism for moving the movable blade forward and backward with respect to the fixed blade. The movable blade and the movable blade driving mechanism are fixed to an opening / closing cover, and can be held by the printer main body. When a cutter with a fixed blade attached is mounted on the open / close cover, if the recording paper is cut without the open / close cover being completely closed, the fixed blade and the movable blade can slide in an appropriate posture. Therefore, there is a problem that the recording paper cannot be cut. In response to such a problem, if the detection mechanism detects that the open / close cover is completely closed, the cutting of the recording paper by the cutter can be stopped when the open / close cover is not completely closed.

1 is a perspective view of a roll paper printer according to an embodiment of the present invention. It is sectional drawing of the roll paper printer of FIG. FIG. 2 is an exploded perspective view of the roll paper printer of FIG. 1. It is explanatory drawing of the lock mechanism which hold | maintains an opening-and-closing cover in a closed position. It is explanatory drawing of the detection mechanism which detects that the opening / closing cover has been arrange | positioned in the closed position. It is a schematic block diagram of a control system of the roll paper printer.

  A roll paper printer according to an embodiment of the present invention will be described below with reference to the drawings.

  FIG. 1 is a perspective view of a roll paper printer according to an embodiment of the present invention as viewed from the side where a paper discharge port is provided. 1A shows a state in which the opening / closing cover is closed, and FIG. 1B shows a state in which the opening / closing cover is opened. FIG. 2 is a cross-sectional view of the roll paper printer. FIG. 3 is an exploded perspective view of the printer. In FIG. 3, the outer covers of the upper cover, the lower cover, and the opening / closing cover are omitted. As shown in FIG. 1, in the following description, for convenience, the width direction of the roll paper printer is X, the front-rear direction is Y, the vertical direction is Z, the side where the paper discharge port is provided is the upper side, and the opposite side is the upper side. Let it be down. The side on which the opening / closing cover is provided is the rear side, and the opposite side is the front side. The left and right in the width direction are the left and right when the printer is viewed from the front.

  The roll paper printer 1 (hereinafter referred to as a printer) of this example prints on a long recording paper 3 fed out from the roll paper 2. The roll paper 2 is a portion of the recording paper 3 that is rolled up. As shown in FIG. 1, the printer 1 has a rectangular parallelepiped shape as a whole. The printer 1 includes a printer main body 5 and an opening / closing cover 6 attached to the printer main body 5. The open / close cover 6 covers a roll paper slot 7a of a roll paper storage unit (recording paper storage unit) 7 provided on the rear side portion of the printer body 5 from above. In a state where the open / close cover 6 is disposed at the closed position 6A where the roll paper inlet 7a is closed, as shown in FIG. 1A, the paper discharge port is provided between the front edge of the open / close cover 6 and the printer main body 5. 8 is formed.

  An open button 9 for opening the opening / closing cover 6 is provided on the side of the opening / closing cover 6 in the printer body 5. When the open button 9 is pressed, the opening / closing cover 6 rotates the rear end portion of the printer body 5 around the axis L extending in the width direction X and opens upward. In the state where the opening / closing cover 6 is opened, as shown in FIG. 1B, the roll paper inlet 7a is opened upward. Therefore, the roll paper 2 can be loaded into the roll paper storage unit 7.

  A fixed blade 11 is attached to the inside of the opening / closing cover 6 with the blade tip facing forward. The blade edge extends along the front edge portion defining the paper discharge port 8 in the opening / closing cover 6. The fixed blade 11 constitutes an auto cutter 13 together with a movable blade unit 12 described later. A platen roller (conveyance roller) 14 is rotatably supported inside the opening / closing cover 6.

  As shown in FIGS. 1 and 2, the printer body 5 includes a lower case 16 that opens upward, and an upper case 17 that covers a front portion of the lower case 16 from above. The opening / closing cover 6 is placed on the rear side portion of the lower case 16, and the roll paper storage unit 7 is provided between the lower case 16 and the opening / closing cover 6. On the front side portion of the upper case 17, a power switch 18 and a display 19 including LEDs are provided.

  As shown in FIG. 2, the movable blade unit 12 is attached to the inner side of the upper case 17. As shown in FIG. 3, the movable blade unit 12 includes a movable blade 21 and a movable blade driving mechanism 22 that moves the movable blade 21 forward and backward with respect to the fixed blade 11. The movable blade drive mechanism 22 includes a cutter motor 33 (see FIG. 6) that is a drive source thereof, and a wheel train 34 that transmits the drive force of the cutter motor 33 to the movable blade 21. The movable blade unit 12 has the blade edge of the movable blade 21 facing backward. The movable blade 21 moves in the front-rear direction Y between a cutting position 21A for cutting the recording paper 3 together with the fixed blade 11 and a standby position 21B spaced forward from the cutting position 21A. The movable blade 21 is in sliding contact with the fixed blade 11 from above the fixed blade 11 when the movable blade 21 moves from the standby position 21B to the cutting position 21A.

  As shown in FIG. 1, a battery loading port 36 a of the battery mounting portion 36 is provided on the right side surface portion on the front side of the lower case 16. An open / close door 37 that opens and closes the battery loading port 36a is attached to the lower case 16. As shown in FIG. 2, the battery mounting portion 36 is provided below the movable blade unit 12 in the front portion of the printer main body portion 5. A battery 101 having a rectangular parallelepiped shape is attached to the battery attachment portion 36 from the width direction X via the battery attachment port 36a. A battery 101 is a power source for the printer 1. A circuit board 40 is disposed below the battery mounting portion 36.

  Between the battery mounting part 36 and the roll paper storage part 7 in the front-rear direction Y, the print head 38 is disposed so as to face the rear. The print head 38 is a thermal head. Further, between the battery mounting portion 36 and the roll paper storage portion 7 in the front-rear direction Y, the paper is discharged from the roll paper storage portion 7 through the print position A by the print head 38 and the cut position B by the auto cutter 13 in this order. A paper conveyance path 39 reaching the opening 8 is formed.

  The platen roller 14 is in contact with the head surface of the print head 38 from behind. The platen roller 14 has the rotation center axis directed in the width direction X. As illustrated in FIG. 1B, the platen roller 14 includes a roller main body 41 and shaft portions 42 and 43 that protrude from the roller main body 41 on both sides in the width direction X. The outer diameters of the shaft portions 42 and 43 are smaller than the outer diameter of the roller body portion 41. A roller side gear 44 is attached to the shaft portion 43 on the other side in the width direction X coaxially with the shaft portion 43.

  The platen roller 14 constitutes a conveyance mechanism 48 (see FIG. 2) that conveys the recording paper 3 along the paper conveyance path 39 together with the conveyance motor 46 and the wheel train 47 that transmits the driving force of the conveyance motor 46 to the platen roller 14. . The transport motor 46 is mounted on the printer body 5. The wheel train 47 includes a main body side wheel train 49 formed on the printer main body 5 side and a roller side gear 44 attached to the shaft portion 43 of the platen roller 14. When the open / close cover 6 is disposed at the closed position 6 </ b> A, the final gear of the main body side wheel train 49 and the roller side gear 44 mesh with each other, and the driving force of the transport motor 46 can be transmitted to the platen roller 14.

  A pair of lock mechanisms 51 for maintaining the opening / closing cover 6 at the closed position 6A on both sides of the paper transport path 39 in the width direction X behind the print head 38, as shown in FIG. , 52 are provided. A pair of cover detectors 53 and 54 are provided behind the pair of lock mechanisms 51 and 52. The pair of cover detectors 53 and 54 includes a first cover detector (first detector) 53 disposed on one side of the paper conveyance path 39 in the width direction X and a second cover detector (first detector) disposed on the other side. A second detector) 54. The first cover detector 53 and the second cover detector 54 together with a detection circuit 55 described later constitute a detection mechanism 56 (see FIG. 6) that detects that the opening / closing cover 6 is disposed at the closed position 6A.

(Lock mechanism)
FIG. 4 is a side view of the periphery of the lock mechanism 51 as viewed from the width direction X. FIG. 4A shows a state in which the open button 9 is pushed downward, and the opening / closing cover 6 is spaced upward from the closed position 6A. FIG. 4B shows a state in which the opening / closing cover 6 is disposed at the closed position 6A. In FIG. 4, the lower case 16 is removed and shown.

  The lock mechanisms 51 and 52 hold the opening / closing cover 6 at the closed position 6 </ b> A by sandwiching the shaft portions 42 and 43 of the platen roller 14 between the fixed member 61 and the movable member 62. Further, when the open button 9 is pushed downward, the lock mechanisms 51 and 52 release the pinching of the shaft portions 42 and 43 by the fixed member 61 and the movable member 62 and rotate the opening / closing cover 6 upward. The open button 9 constitutes an unlock mechanism 63 that unlocks the opening / closing cover 6 by the lock mechanisms 51 and 52. The lock release mechanism 63 includes a swing member 64 that swings when the open button 9 is operated. The configuration of the lock mechanism 51 disposed on one side of the paper conveyance path 39 in the width direction X is the same as that of the lock mechanism 52 disposed on the other side. Description of is omitted.

  The fixing member 61 has a plate shape and extends in the vertical direction Z and the front-rear direction Y on the side of the paper transport path 39. The front end edge of the fixing member 61 is provided with a fixing member side recess 61a (see FIG. 5A) cut out from the front.

  The movable member 62 has a plate shape and is supported so as to be rotatable around a rotation axis L1 extending in the width direction X. The rotation axis L1 of the movable member 62 is located in front of the fixed member 61 and below the fixed member side recess 61a. The movable member 62 rotates between a lock position 62A that sandwiches the platen roller 14 together with the fixed member 61 and an open position 62B that is separated from the lock position 62A. As shown in FIG. 4B, when the movable member 62 is disposed at the lock position 62A, the first plate portion 65 extending in the upward direction and the middle of the first plate portion 65 in the vertical direction Z are moved backward from the middle. A second plate portion 66 extending, a third plate portion 67 extending rearward from the lower end portion of the first plate portion 65, a fourth plate portion 68 extending forward from the middle of the first plate portion 65 in the vertical direction Z, and A fifth plate portion 69 that extends in the vertical direction Z and connects between the rear portion of the second plate portion 66 and the rear end portion of the third plate portion 67 is provided.

  The rotation axis L <b> 1 is provided at the lower portion of the first plate portion 65. On the upper side of the first plate portion 65 above the second plate portion 66, there is provided a movable member side recess 62a cut out from the rear at the rear edge. As shown in FIG. 5A, the movable member-side recess 62a faces the fixed member-side recess 61a from the front when the movable member 62 is disposed at the lock position 62A. A coil spring 70 is attached to the front end portion of the fourth plate portion 68 to urge the movable member 62 toward the open position 62B. The front end portion of the swing member 64 of the lock release mechanism 63 is in contact with the rear end portion of the third plate portion 67 from below.

  The swing member 64 is supported so as to be rotatable around a rotation axis L2 extending in the width direction X. The rotation axis L <b> 2 of the swing member 64 is located behind the movable member 62 and below the movable member 62. The rear end portion of the swing member 64 is connected to the open button 9. When the open button 9 is pushed downward, the rear end portion of the swing member 64 moves downward, and the front end portion of the swing member 64 moves upward. At this time, the swing member 64 rotates the movable member 62 of the lock mechanism upward.

  As shown in FIG. 4A, in the state where the movable member 62 is disposed at the open position 62B, the first plate portion 65 of the movable member 62 is inclined forward and upward. Therefore, a gap 71 that extends upward is formed between the movable member 62 and the fixed member 61. When the opening / closing cover 6 is disposed at the closed position 6 </ b> A in this state, the shaft portion 42 of the platen roller 14 is inserted into the gap 71 and comes into contact with the second plate portion 66 of the movable member 62. In addition, the shaft portion 42 moves the second plate portion 66 downward against the urging force of the coil spring 70. Accordingly, the movable member 62 is disposed at the lock position 62A. When the movable member 62 is disposed at the lock position 62A, as shown in FIG. 4B, the shaft portion 42 of the platen roller 14 is sandwiched between the fixed member-side concave portion 61a and the movable member-side concave portion 62a. Become. Therefore, the opening / closing cover 6 is held at the closed position 6A.

  When the open button 9 is pushed downward when the open / close cover 6 is disposed at the closed position 6A, the rear end portion of the swing member 64 moves downward, and the front end portion of the swing member 64 moves upward. . As a result, the swing member 64 moves the third plate portion 67 of the movable member 62 at the lock position 62A upward. As a result, as shown in FIG. 4A, the movable member 62 moves from the lock position 62A to the open position 62B, and the lock of the open / close cover 6 by the lock mechanism 51 is released.

  Here, when the movable member 62 moves to the open position 62B, the second plate portion 66 of the movable member 62 pushes the shaft portion 42 of the platen roller 14 upward. Thereby, the shaft part 43 on the other side of the platen roller 14 also moves upward. Accordingly, in the lock mechanism 52 on the other side, the movable member 62 rotates in the direction from the lock position 62 </ b> A toward the release position 62 </ b> B, and the shaft portion 43 is released from the lock mechanism 52. Therefore, the lock of the open / close cover 6 by the lock mechanism 52 is also released.

(Detection mechanism)
FIG. 5 is an explanatory diagram of the detection mechanism 56. FIG. 5A shows a state in which the opening / closing cover 6 is located above the closed position 6A, and FIG. 5B shows a state in which the opening / closing cover 6 is disposed at the closed position 6A. These are circuit diagrams of the detection mechanism 56. FIG. 5A and 5B show the printer 1 with the lower case 16 removed.

  The detection mechanism 56 detects that the opening / closing cover 6 is in the closed position 6A on both sides of the paper conveyance path 39 in the width direction X. Here, since the configuration of the first cover detector 53 disposed on one side of the paper transport path 39 and the second cover detector 54 disposed on the other side are the same, the first cover detector 53 will be described to explain the first cover detector 53. The description of the two-cover detector 54 is omitted.

  The first cover detector 53 is a switch that is operated by the open / close cover 6 disposed at the closed position 6A to form a conductive state. As shown in FIG. 5, the first cover detector 53 includes an operation unit 76 that moves up and down. When the opening / closing cover 6 is disposed at the closed position 6A, the projection 77 provided on the opening / closing cover 6 comes into contact with the operation portion 76 from above and pushes down downward. As a result, the first cover detector 53 becomes conductive.

  Here, as shown in FIG. 5C, the detection circuit 55 detects a circuit portion 78 in which the first cover detector 53 and the second cover detector 54 are connected in series, and disconnection of the circuit portion 78. A continuity detecting unit (detecting unit) 79 is provided. The continuity detecting unit 79 detects that the open / close cover 6 is disposed at the closed position 6A when the circuit portion 78 is not disconnected and becomes conductive.

(Control system)
FIG. 6 is a schematic block diagram of the control system of the printer 1. As shown in FIG. 6, the control system of the printer 1 is mainly configured by a control unit 81 having a CPU. A communication unit 82 and a detection mechanism 56 are connected to the input side of the control unit 81. The communication unit 82 connects an external device such as a computer and the printer 1 so that they can communicate with each other. The detection mechanism 56 inputs a close signal to the controller 81 when the open / close cover 6 is disposed at the closed position 6A and the first cover detector 53 and the second cover detector 54 are in a conductive state. . The display 19, the print head 38, the transport motor 46, and the cutter motor 33 are connected to the output side of the control unit 81 via a driver (not shown).

  The control unit 81 includes a print control unit 85 and an operation stop control unit 86. When print data is supplied from an external device via the communication unit 82, the print control unit 85 checks whether or not a close signal is input from the detection mechanism 56. Then, the print control unit 85 performs a print processing operation for printing the print data when the close signal is input from the detection mechanism 56 (when the open / close cover 6 is disposed at the closed position 6A). In the print processing operation, the control unit 81 drives the transport motor 46 to transport the recording paper 3 drawn out to the paper transport path 39 along the paper transport path 39 at a constant speed. In addition, the print control unit 85 drives the print head 38 in parallel with the drive of the transport motor 46 to print the print data on the recording paper 3 that passes the print position A. When the printing process is completed, the print control unit 85 drives the cutter motor 33 to cut the recording paper 3 that has been printed at the cutting position 21A.

  The operation stop control unit 86 turns on the display 19 when the close signal is not input from the detection mechanism 56 (when the open / close cover 6 is not disposed at the closed position 6A). Further, when the close signal is not input from the detection mechanism 56, the operation stop control unit 86 does not operate the print head 38, the conveyance motor 46, and the cutter motor 33, and suspends the processing operation by these driving. For example, if the close signal is not input from the detection mechanism 56 when print data is supplied from an external device, the print control unit 85 may attempt to drive the print head 38, the conveyance motor 46, and the cutter motor 33. These operations are not operated and the print processing operation is suspended. Thereafter, when a close signal is input from the detection mechanism 56, the operation stop control unit 86 permits the print control unit 85 to drive the print head 38, the conveyance motor 46, and the cutter motor 33. As a result, the suspended print processing operation is executed.

(Printing operation)
When the close signal is input from the detection mechanism 56, the printer 1 turns off the display 19 on the assumption that the print processing operation can be normally performed. On the other hand, when the closing signal is not input from the detection mechanism 56, the printer 1 turns on the display 19 to urge the operator to close the opening / closing cover 6.

  When print data is supplied to the printer 1 from an external device, the control unit 81 confirms whether or not a close signal is input from the detection mechanism 56. Here, when a close signal is input from the detection mechanism 56 to the control unit 81, the printer 1 performs a print processing operation. That is, the printer 1 conveys the recording paper 3 along the paper conveyance path 39, performs printing at the printing position A, and cuts the recording paper 3 printed at the cutting position 21A.

  On the other hand, when the close signal is not input from the detection mechanism 56 to the control unit 81, the printer 1 does not operate the print head 38, the transport motor 46, and the cutter motor 33, and suspends the print processing operation. Thereafter, when the opening / closing cover 6 is completely closed by the operator, the printer 1 performs a print processing operation.

  Here, in the printer 1 of this example, the platen roller 14 is supported by the opening / closing cover 6. Therefore, if the opening / closing cover 6 is not completely closed, the platen roller 14 is not disposed in an appropriate position at an appropriate position. Therefore, if the recording paper 3 is conveyed by driving the platen roller 14 when the opening / closing cover 6 is not completely closed, there is a problem that the conveyance accuracy is lowered. When the conveyance accuracy of the recording paper 3 is lowered, the printing quality is lowered.

  Further, in the printer 1 of this example, the fixed blade 11 of the auto cutter 13 is mounted on the opening / closing cover 6, and the movable blade 21 is mounted on the printer main body 5. Therefore, if the recording paper 3 is cut in a state where the open / close cover 6 is not completely closed, the fixed blade 11 and the movable blade 21 do not slide in an appropriate posture, and the recording paper 3 cannot be cut. is there.

  With respect to these problems, in this example, the detection mechanism 56 detects that the opening / closing cover 6 is disposed at the closed position 6A on one side and the other side with the paper conveyance path 39 interposed therebetween. Therefore, for example, when the opening / closing cover 6 disposed at the closed position 6A is inclined from a specified posture, one end portion of the paper transport path 39 in the opening / closing cover 6 reaches the closed position 6A. On the other hand, when the other end portion of the paper transport path 39 is separated from the closed position 6A, the detection mechanism 56 does not detect that the open / close cover 6 is in the closed position 6A. That is, the detection mechanism 56 does not detect that the open / close cover 6 is in the closed position 6A when the open / close cover 6 is not completely closed.

  Further, in this example, when the opening / closing cover 6 is not completely closed, a closing signal is not output from the detection mechanism 56, so that the print head 38, the conveyance motor 46, and the cutter motor 33 do not operate. Therefore, when the open / close cover 6 is not completely closed, the printer 1 does not perform the print processing operation. Therefore, it is possible to prevent a decrease in print quality due to a decrease in conveyance accuracy. Further, it is possible to prevent the problem that the recording paper 3 cannot be cut even if the auto cutter 13 is operated.

1 .. Printer, 2 .. Roll paper, 3 .. Recording paper, 5 .. Printer body, 6 .. Opening / closing cover, 6 A ... Close position, 7 .. Roll paper storage (recording paper storage), 7a ... Roll paper slot, 8 ... Paper exit, 9 ... Open button, 11 .... Fixed blade, 12 .... Movable blade unit, 13 .... Auto cutter, 14 .... Platen roller (conveyance roller), 16 .... Lower case, 17 .... Upper case, 18 .... Power switch, 19 .... Indicator, 21 ... Movable blade, 21A ... Cutting position, 21B ... Standby position, 22 .... Movable blade drive mechanism, 33..Cutter motor, 34..Wheel, 36..Battery mounting part, 36a..Battery loading port, 37..Opening / closing door, 38..Print head, 39..Paper transport path, 40..Circuit board 41 ·· Roller body, 42 · 43 · · Shaft 44..Roller side gear, 46..Conveyance motor, 47..Wheel train, 48..Conveyance mechanism, 49..Main body side train wheel, 51.52 ... Lock mechanism, 53..First cover detector (First detector), 54 ... second cover detector (second detector), 55 ... detection circuit, 56 ... detection mechanism, 61 ... fixing member, 61a ... recessed member side recess, 62 ... · Moving member 62a ··· Moving member-side recess, 62A ··· Lock position, 62B ··· Opening position 63 ··· Unlocking mechanism 64 · · Oscillating member 65 · · First plate portion · · · 66 2 plate part, 67... 3rd plate part, 68... 4th plate part, 69... 5 plate part, 70 .. Coil spring, 71. ..Circuit part 79 ..Continuity detection part 81 ..Control part 82 ..Communication part 85 ..Print control part 86. Operation stop control unit, 101 ·· Battery, A ·· Print position, B ·· Cut position, L · · Axis line, L1 ·· Rotation axis, L2 ·· Rotation axis, X ·· Width direction, Y ·· Longitudinal direction , Z ... up and down direction

Claims (3)

In a printer that prints on recording paper,
A printer main body having a recording paper storage unit for storing the recording paper;
An open / close cover attached to the printer main body to open and close the recording paper storage unit;
A locking mechanism attached to the printer main body and movable to lock the open / close cover in a closed position;
An unlocking mechanism that engages with the locking mechanism and releases the locking of the opening and closing cover;
A paper transport path through which the recording paper is transported from the recording paper storage unit to a paper discharge port via a printing position by a print head;
A transport roller for transporting the recording paper along the paper transport path;
Have
The transport roller is rotatably supported by the opening / closing cover,
The lock mechanism is provided on both sides of the paper conveyance path, and the lock release mechanism is provided on one side of the paper conveyance path.
The lock mechanism on one side moves by the unlock mechanism to push and move the shaft portion of the transport roller, the lock mechanism on the other side moves by the movement of the shaft portion, the lock is released,
A printer having a detection mechanism for detecting that the opening / closing cover is disposed at the closed position on one side and the other side with the paper conveyance path interposed therebetween . In claim 1,
The detection mechanism includes a first detector located on one side of the paper conveyance path, a second detector located on the other side, and a detection circuit,
The first detector and the second detector are switches that are operated by the open / close cover disposed in the closed position to form a conductive state,
The printer, wherein the first detector and the second detector are connected to the detection circuit. In claim 1 or 2,
Having a cutter for cutting the recording paper,
The cutter includes a fixed blade, a movable blade, and a movable blade driving mechanism for moving the movable blade forward and backward with respect to the fixed blade,
The fixed blade is fixed to the opening / closing cover,
The printer, wherein the movable blade and the movable blade drive mechanism are held by the printer main body.

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