JP5754222B2 - Printing device - Google Patents

Description

  The present invention relates to a printing apparatus that performs desired printing on a printing paper.

  A small-sized printing apparatus that performs desired printing on a printing paper is known (for example, see Patent Document 1). In this printing apparatus, when printing paper is introduced from an inlet provided in the upper part of a rectangular parallelepiped housing, the introduced printing paper is transported by the platen roller, and the printed printing paper is transferred to the printing paper. On the other hand, the thermal line head performs desired printing. The printed paper after printing is discharged from a discharge port provided on the front side surface of the housing.

JP 7-309041 A

  In the above-described prior art, it is considered that the printing paper is fed out from a paper roll around which the printing paper is wound. In this case, for example, a paper roll is rotatably attached to the upper part of the housing via a roll holder or the like, and the paper roll rotates to feed out the printing paper from the lower side, for example. Printing is performed by being introduced into the housing from the introduction port. At that time, when the printing paper after printing is discharged from the discharge port, there is a possibility that the printing paper is discharged in an upwardly curved state due to the influence of the roll state. In such a case, there is a concern that the paper to be printed after being discharged accidentally enters the casing again from the inlet at the top of the casing and causes poor paper feeding.

  An object of the present invention is to prevent a paper feeding failure caused by a paper to be printed after it has been ejected from a paper roll accidentally entering the housing again through the introduction port, even when printing is performed using the paper to be printed fed from a paper roll. It is an object of the present invention to provide a printing apparatus that can prevent this.

In order to achieve the above object, the present invention provides a substantially rectangular parallelepiped housing that can be arranged with the longitudinal direction being the left-right direction and the short direction being the vertical direction and the front-rear direction, and the rear side of the substantially rectangular parallelepiped shape casing A pair of left and right roll supports that are detachably provided on the part and rotatably support both ends in the left-right direction of a paper roll around which printing paper is wound, and an upper surface of the substantially rectangular parallelepiped casing A roll introduction port that opens along the left-right direction and introduces the printing paper fed from the paper roll supported by the roll support into the housing; and the right and left inside the housing A platen roller that is rotatably supported with respect to the casing and transports the printing paper introduced from the roll introduction port; and along the left-right direction in the casing. A thermal line head that is provided so as to face the latin roller in the vertical direction and that performs desired printing on the printing paper conveyed by the platen roller, and the front side surface of the substantially rectangular parallelepiped casing Opened along the left-right direction, provided at each of the discharge ports for discharging the printed paper after printing by the thermal line head to the outside of the housing, and in the vicinity of both ends in the left-right direction above the discharge ports. Substantially flat plate-like shape for contacting the printed paper after printing, which is attached to the left and right pair of attachment parts, respectively, and discharged from the discharge port upwardly. of a left-right pair of paper-contacting sheet, wherein the lower end of the left-right pair of the paper-contacting sheet was openably provided on the top front side of the housing so as to cover the discharge port Characterized in that attached to the bar member.

  The printing apparatus according to the present invention includes a rectangular parallelepiped housing. A roll support that rotatably supports a paper roll of the printing paper can be mounted on the rear side portion of the housing. The printing paper fed out from the paper roll is introduced into the housing from an introduction port provided on the upper surface of the housing, and is conveyed by the platen roller. Desired printing is performed on the conveyed printing paper by the thermal line head, and then the paper is discharged from a discharge port provided on the front side surface of the housing.

  As described above, when the printing paper after printing is discharged from the discharge port, the printing paper may be discharged in an upwardly curved state due to the influence of the roll state. In the present invention, a paper contact sheet is provided to cope with such a discharge mode. That is, a pasting portion is provided above the discharge port in the housing, and the lower end portion of the sheet contact sheet is pasted on this pasting portion. As a result, it is possible to bring the printed paper after printing discharged upwardly from the discharge port as described above into contact with the upper portion of the paper contact sheet from the front side. As a result, it is possible to prevent the paper to be printed after being discharged from accidentally entering the housing again from the inlet and causing a paper feed failure.

  According to the present invention, even when printing is performed using the printing paper fed out from the paper roll, it is possible to prevent a paper feeding failure due to the printing paper after discharge accidentally entering the housing again from the inlet. Can be prevented.

1 is a perspective view illustrating an external configuration of a printing apparatus according to an embodiment of the present invention. It is a sectional side view by the II-II cross section in FIG. 1 showing the internal structure of a printer. FIG. 3 is an exploded perspective view showing the internal structure of the printer, as viewed from the diagonally upward direction on the front side. FIG. 4 is a partially enlarged side sectional view showing a relative positional relationship among a guide member, a platen roller, and a thermal line head. It is a disassembled perspective view showing the support structure of the paper roll by a roll holder. It is a perspective view showing the attachment structure of a paper contact sheet. It is explanatory drawing showing the relationship between the inclination angle of the inclined surface part to which a paper contact sheet is attached, and a roll outer diameter. It is explanatory drawing showing the block behavior of the to-be-printed paper by a paper contact sheet. It is a perspective view showing the comparative example which provided the one paper contact sheet in the center part in the left-right direction. It is a perspective view for demonstrating the effect of one Embodiment of this invention.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

<Overview of overall printer configuration>
The overall configuration of the printer 1 as an embodiment of the printing apparatus of the present invention will be described with reference to FIGS. 1, 2, and 3. In the following, the lower left direction in FIG. 1 is defined as the front, the upper right direction is the rear, the upper left direction is the left side, the lower right direction is the right direction, the upper direction is the upper direction, and the lower direction is the lower direction. The direction will be described.

  The printer 1 prints print data received from an external device such as a PC terminal or a mobile phone via a wired communication (or wireless communication) on the printing paper S. The printer 1 can be driven by using a rechargeable battery 10 (see FIG. 2) as a power source, and can be carried and used by an operator in various places.

The printer 1 is configured by assembling, for example, a casing 100 that is made of a resin material and that forms an apparatus outline, and a chassis assembly 50 (see FIG. 3).

The housing 100 includes a top cover 101, an under cover 102, and a cover member 103 that can be opened and closed on the upper front side of the top cover 101 (so as to cover a discharge port 107 described later). The casing 100 as a whole has a substantially rectangular parallelepiped shape in which the left-right direction is the longitudinal direction and the up-down direction and the front-rear direction are short directions. As a result, as shown in FIG. 3, areas exposed to the upper part of the top cover 101 and the cover member 103 (hereinafter, simply referred to as “upper area”) 101 </ b> A and 103 </ b> A of the casing 100 according to each claim. Configure the top surface. In addition, regions exposed to the front of each of the under cover 102, the top cover 101, and the cover member 103 (hereinafter simply referred to as “front regions”) 102A, 101B, and 103B are formed on the front side surface of the housing 100. It is composed. In addition, between the upper region 103A and the front region 103B located on the upper front side of the cover member 103, the inclined surface portion 108 (inclined surface) is chamfered at the boundary between the upper region 103A and the front region 103B. Surface).

Further, a battery storage chamber 105 for storing the substantially rod-shaped rechargeable battery 10 is provided on the rear side of the housing 100 (see FIG. 2). A battery chamber cover 170 is detachably provided in the battery storage chamber 105. In a state where the battery chamber cover 170 is removed, the battery storage chamber 105 opens in the back surface portion of the housing 100.

  The chassis assembly 50 includes a main chassis member 150 that is provided on the inner surface of the under cover 102 and constitutes a bottom portion of the chassis assembly 50, and a pair of erected from both longitudinal ends of the main chassis member 150. Side chassis members 130L and 130R are provided.

<Internal housing structure>
The structure inside the housing 100 will be described with reference to FIGS. The side chassis members 130 </ b> L and 130 </ b> R support the platen roller 111 rotatably with respect to the housing 100 by inserting the shaft members 111 a at both ends in the left-right direction of the platen roller 111 into the shaft hole 131. At this time, the shaft member 113 is provided so as to protrude in the longitudinal direction from both ends in the longitudinal direction at the rear side end of the heat dissipation plate 114 provided with the thermal line head 112. The side chassis members 130L and 130R also support the shaft member 113 so as to be rotatable. As a result, the thermal line head 112 is supported so as to be rotatable with respect to the side chassis members 130L and 130R via the shaft member 113 of the heat radiating plate 114, and left and right so as to face the platen roller 111 in the vertical direction. Arranged along the direction.

  The left side chassis member 130L includes a drive motor 11 that drives the platen roller 111, and a gear mechanism 132 that includes a plurality of gears that transmits the driving force of the drive motor 11 to the shaft member 111a of the platen roller 111. And are provided. The platen roller 111 is rotated by the driving force and conveys the printing paper S.

  A beam member 140 is bridged and fixed on the upper portions of the side chassis members 130L and 130R. A guide member 120 (see also FIG. 1) is fixed to the beam member. As shown in FIG. 4, the guide member 120 is configured to receive the printing paper S that is inserted from the insertion port 104 (introduction port) that is located at the rear end of the upper region of the cover member 103 and opens in the left-right direction. Guide to the pressure contact portion P between the platen roller 111 and the thermal line head 112. That is, the transport path of the printing paper S passes from the insertion port 104 (see also FIG. 1) through the inclined surface 122 of the guide member 120 and the pressure contact portion P between the platen roller 111 and the thermal line head 112. , A route to the discharge port 107 (see also FIG. 1). The thermal line head 112 performs desired printing on the printing paper S conveyed by the platen roller 111. The discharge port 107 discharges the printing paper S on which desired printing has been performed by the thermal line head 112 as described above to the outside of the housing 100. The discharge port 107 is formed between the front region 103B of the cover member 103 and the front region 102A of the under cover 102 so as to open along the left-right direction.

  In the printer 1 according to the present embodiment having the above-described basic configuration and operation, the greatest feature is that the sheet S to be printed can be used from the sheet roll, and the printing sheet S after printing can be used. The purpose is to prevent re-insertion into the insertion port 104. Hereinafter, the contents will be described in order.

<Roll holder>
First, a roll holder 200 (roll support) for attaching a paper roll SR, in which the printing paper S is wound in a roll shape, to the housing 1 will be described with reference to FIG.

  The roll holder 200 is provided with a left / right pair of a left roll holder 200L for supporting the left end of the paper roll SR and a right roll holder 200R for supporting the right end of the roll SR. Each of the roll holders 200L and 200R includes a roll support portion 201 and a housing gripping portion 202 that grips the housing 100 so as to sandwich the housing 100 from above and below.

  The roll support portion 201 has a support convex portion 201a that is inserted into the concave portion P provided in the core of the paper roll SR and rotatably supports the core.

The housing grip 202 has a substantially U-shape when viewed from the side, and includes an upper pressing portion 202a, an intermediate connecting portion 202b, and a lower pressing portion 202c from the upper side to the lower side. The upper pressing portion 202a is connected to the lower end portion of the roll support portion 201 and is disposed in the front-rear direction when the holder is attached. The lower pressing portion 202c includes an elastic claw portion 202ca. Elastic claw portion 202c a, the bottom exposed region 102B on one of the undercover 102 (see FIG. Properly hereinafter simply referred to as "bottom region") provided, the recess CV (described later in FIG. 8 for positioning It is simply shown (not shown in other figures). The positioning state of being penetrated into the recess CV of the elastic claw portion 202c a, and the upper pressing portion 202a and the lower pressing portion 202c is sandwiched a housing 100 from above and below. As a result, due to the elasticity of the U-shape, the upper pressing portion 202a is in close contact with the upper region 101A of the top cover 101, and the lower pressing portion 202c is in close contact with the bottom region of the under cover 102, and the roll holders 200L, 200R. The whole is fixed to the housing 100. In the lower part of FIG. 5, left and right roll holders 200 </ b> L and 200 </ b> R that respectively support the left and right ends of the paper roll SR are attached to the left and right sides of the rear portion of the housing 100 as described above. Indicates the state. The roll holder 200R can be removed when the paper roll SR is not used or when the paper roll SR is consumed and replaced.

<Paper contact sheet>
In the present embodiment, when the roll holders 200L and 200R are used by being mounted on the casing 100 as described above, the printing paper S fed out from the paper roll SR (in this example, from the lower side of the paper roll SR). Is introduced into the inside of the housing 100 from the insertion port 104 provided on the upper surface of the housing 100 (see FIG. 5 and FIGS. 8A and 8B described later), and is conveyed by the platen roller 111. Is done. Then, after desired printing is performed on the conveyed printing paper S by the thermal line head 112, the paper is discharged from a discharge port 107 provided on the front side surface of the housing 100. Here, when the printing paper S after printing is discharged from the discharge port 107 as described above, the printing paper S may be discharged in an upwardly curved state due to the influence of the roll state. .

  In the present embodiment, a sheet contact sheet is provided to cope with the printing sheet S discharged in the above-described warped state. The sheet contact sheet will be described with reference to FIGS.

As shown in FIG. 6A, in this embodiment, a pair of left and right sheet contact sheets 300L and 300R are used. Each of the paper contact sheets 300L and 300R is made of an elastically deformable resin material (for example, a PET film having a thickness of 0.1 mm to 0.2 mm) having a thin plate shape of a substantially rectangular shape (80 mm × 50 mm). Further, the sheet contact sheets 300L and 300R include an adhesive layer 300a made of an appropriate adhesive at the lower end. On the other hand, in the housing 100 side, in the vicinity of the left and right side end portions of the inclined surface portion 108 of the aforementioned cover member 103, sticking section AL as the adhesive area, AR is preset. The sticking section AL, AR is a boundary line display so that it can be distinguished from the other portions of the inclined surface portion 108, a stepped structure, but may be subjected to different surface treatment, and other sites without particular distinction A similar appearance may be used. In particular, in this example, as shown in FIG. 7, the inclined surface portion 108 has a surface extension line X when viewed from the side, and the maximum diameter of the paper roll SR supported by the roll holders 200L and 200R. It is configured to pass through the inner range of D.

  Each of the sheet contact sheets 300L and 300R is fixed to the casing 100 by the adhesive layer 300a being attached to the pair of left and right attachment portions SL and AR of the inclined surface portion 108 (FIG. 6). (See (a)). At this time, as shown in FIG. 6B, the upper portions of the sheet contact sheets 300L and 300R come into contact with the outer periphery of the sheet roll SR supported by the roll holders 200L and 200R from the front side. ing.

  In the printer 1 of the present embodiment configured as described above, the lower end portions of the sheet contact sheets 300L and 300R are attached to the attachment portions AL and AR of the inclined surface portion 108 provided above the discharge port 107 in the casing 100. Affixed (see FIG. 6A and FIG. 6B). As a result, as shown in FIG. 8A and FIG. 8B, the printed printing paper S that has been discharged upwardly from the discharge port 107 is moved forward to the upper part of the paper contact sheets 300L and 300R. Can be contacted from the side. As a result, it is possible to prevent the printing paper S after being discharged from entering the housing 100 again through the insertion port 104 and causing a paper feed failure.

At this time, particularly in the present embodiment, the sheet contact sheets 300L and 300R are provided such that the upper portions thereof are in contact with the outer peripheral surface of the front portion of the sheet roll SR. As a result, as shown in FIGS. 8A and 8B, the sheet contact sheets 300L and 300R are in a state where they are brought into contact with the printing paper S discharged from the discharge port 107 and bent backward. However, further bending is suppressed by the paper roll SR. As a result, it is possible to reliably block the printing paper S discharged from the discharge port 107 from going to the rear side where the insertion port 104 is located. At this time, even if the roll diameter of the paper roll SR gradually decreases due to consumption of the printing paper S from the state of FIG. 8A to the state of FIG. 8B, the paper contact sheets 300L and 300R are It follows the behavior of the diameter reduction while bending. As a result, the contact between the sheet contact sheets 300L and 300R and the sheet roll SR is reliably maintained.

  In particular, in this example, the sheet contact sheets 300L and 300R are made of a resin material. That is, by using a resin material that can be elastically deformed and return to its original shape, the sheet contact sheets 300L and 300R that block the printing sheet S discharged from the discharge port 107 while bending as described above. The function can be realized easily and inexpensively.

  Further, in the present embodiment, as described above, the surface extension line X when the inclined surface portion 108 is viewed from the side is configured to pass through the inner range of the maximum diameter D of the paper roll SR. . Thereby, the sheet contact sheets 300L and 300R (before the bending deformation) exist along the extension line X as shown in FIG. From this state, the paper roll SR is installed, and as shown in FIG. 8A, the paper roll SR is pressed forward by the paper roll SR and is bent, and the paper roll SR is pressed by an elastic force. Thereby, the paper contact sheets 300L and 300R and the paper roll SR can be reliably brought into contact with each other.

  Then, the paper in a state of being supported by the roll holders 200L and 200R by adopting a structure in which the paper contact sheets 300L and 300R are in contact with the paper roll SR (in other words, sliding with the outer peripheral portion of the paper roll SR). The rotation of the roll SR and the feeding of the printing paper A due to the rotation are not hindered. Further, since the paper contact sheets 300L and 300R are always in contact with the paper roll SR, there is an effect that the printing paper S wound around the paper roll SR can be prevented from being scattered.

  In the present embodiment, in particular, a pair of left and right sheet contact sheets 300L and 300R are separately provided for a pair of left and right attachment portions AL and AR provided in the vicinity of both ends in the left and right direction of the casing 100, respectively. Is pasted. The effect by this is demonstrated using the comparative example shown in FIG.

  As described above, the printing paper S fed out and printed from the paper roll SR is discharged from the discharge port 107 provided on the front side of the housing 100 while being warped upward. At this time, for example, as shown in FIG. 9, when one sheet contact sheet 300 ′ is provided at one central portion in the left-right direction, not at both ends in the left-right direction, the top of the printing paper S to be discharged as described above. When the direction of warping is not uniform left and right, or when the leading end surface shape is not linear, the printing paper S passes through either one of the left and right sides of the one paper contact sheet 300 'as shown in the figure. May reach the insertion port 104.

  On the other hand, in the present embodiment, by providing a pair of sheet contact sheets 300L and 300R on the left and right sides, as described above, the orientation of the printed sheet S when it is warped is uneven on the left and right sides, or on the leading edge. Even when the surface shape is not linear, as shown in FIG. 10, the printing paper S is reliably brought into contact with the front 200 from the front side, and accidentally enters the housing 100 from the insertion port 104 again. Can be surely prevented.

  In addition to those already described above, the methods according to the above-described embodiments and modifications may be used in appropriate combination.

  In addition, although not illustrated one by one, the present invention is implemented with various modifications within a range not departing from the gist thereof.

1 Printer (printing device)
100 Housing (housing)
104 Insertion port (introduction port)
107 Discharge port 111 Platen roller 112 Thermal line head 200L, R Roll holder (roll support)
300L, R Paper contact sheet AL, AR Pasting part S Printing paper SR Paper roll

Claims (4)

A substantially rectangular parallelepiped housing that can be arranged with the longitudinal direction as the left-right direction and the short direction as the up-down direction and the front-rear direction;
A pair of left and right roll supports that are detachably provided on a rear side portion of the substantially rectangular parallelepiped housing and rotatably support both left and right ends of a paper roll around which printing paper is wound;
Roll introduction that introduces the printing paper fed out from the paper roll that opens in the left-right direction on the upper surface of the substantially rectangular parallelepiped casing and is supported by the roll supporter into the casing. Mouth,
A platen roller that supports both ends in the left-right direction in the casing so as to be rotatable with respect to the casing and conveys the printing paper introduced from the roll introduction port;
A thermal line head that is provided so as to face the platen roller in the vertical direction along the left-right direction inside the casing, and that performs desired printing on the printing paper conveyed by the platen roller;
A discharge port that opens along the left-right direction on the front side surface of the substantially rectangular parallelepiped casing, and discharges the printing paper after printing by the thermal line head to the outside of the casing;
After the printing in which the lower end portion is attached to each of the left and right affixed portions provided in the vicinity of both ends in the left and right direction above the discharge port, and discharged from the discharge port in an upward direction. A pair of substantially flat left and right paper contact sheets for contacting the printing paper from the front side;
Have
The lower end of the pair of left and right paper contact sheets is
A printing apparatus, wherein the printing apparatus is attached to a cover member that is openable and closable on an upper front side of the casing so as to cover the discharge port. The printing apparatus according to claim 1.
The pair of left and right sheet contact sheets is:
The printing apparatus according to any one of the preceding claims, wherein the upper part contacts the outer peripheral surfaces of both ends in the left-right direction of the paper roll supported by the roll support. The printing apparatus according to claim 2, wherein
The paper contact sheet is
A printing apparatus comprising a resin material. The printing apparatus according to claim 3.
The housing is
The boundary between the front side surface and the upper surface so that the extension line of the surface when viewed from the lateral direction in the lateral direction passes through the inner range of the maximum diameter of the paper roll supported by the roll support. It has an inclined surface provided in the part,
The pair of left and right pasting parts is
A printing apparatus provided on the inclined surface.

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