JP5745915B2 - Printer device - Google Patents

Description

  The present invention relates to a printer apparatus, and more particularly to a printer apparatus provided with a guide mechanism for guiding a photographic paper drawn from a roll-shaped photographic paper (hereinafter also referred to as a roll paper or a photographic paper roll) to the vicinity of a thermal head.

  Conventionally, when a photographic paper is mounted on a guide mechanism that guides the photographic paper from the roll paper to, for example, the vicinity of the inkjet head, the roll paper is manually inserted into a guide portion located on the back side of the roll paper. There is a mechanism (for example, refer to Patent Document 1).

  Also, a paper guide mechanism for urging the paper guide member to the roll paper is provided, and the tip of the guide plate is urged to the roll paper to automatically feed the paper, and the roll paper moves when the roll paper is rotated. There is an automatic paper feeder for roll paper that makes it easy to scoop the leading edge of the roll paper (see, for example, Patent Document 2).

  In addition, a buffer member, which is a paper guide member that urges the photographic paper drawn from the roll paper, is provided, and in order to buffer the shocking load that occurs when guiding the photographic paper, it depends on the magnitude of the impact. There is a printer that changes the shape of the buffer member (see, for example, Patent Document 3).

  In addition, there is a printer including a paper guide member that urges a photographic paper drawn out from a roll paper whose rotating shaft is not held and fixed (see, for example, Patent Document 4).

Japanese Unexamined Patent Publication No. 2007-161382 (FIG. 2) Japanese Patent Laid-Open No. 11-11750 (FIG. 1) Japanese Patent Laid-Open No. 2002-241006 (FIG. 1) Japanese Patent Laid-Open No. 11-349197 (FIG. 1)

  In Patent Document 1, since the guide portion is located on the back side of the roll paper, it is difficult to see the guide destination, and the roll paper in front is obstructive, so it is difficult to mount the photographic paper.

  Further, Patent Document 2 aims to automatically feed photographic paper and requires installation of sensors, a drive mechanism, etc., and there is a problem that the size of the entire apparatus increases and the number of parts also increases. It was.

  Further, in Patent Document 3, the wrapping angle of the photographic paper wound around the end of the buffer member changes depending on the magnitude of the impact, and when the wrapping angle becomes large, it is easy to leave damage to the photographic paper. was there.

  Moreover, in patent document 4, since the rotating shaft of roll paper is not hold | maintained and fixed, the behavior of roll paper will not be settled but a sliding loss will change a lot. In addition, the magnitude of the sliding loss that occurs between the paper terminal separator member and the roll paper varies greatly with changes in the outer diameter of the roll paper. Further, the sliding loss also changes due to a change in the weight of the roll paper accompanying a change in the outer diameter of the roll paper. As described above, there is a problem that it is easy to leave damage to the photographic paper due to the sliding loss.

  The present invention has been made to solve these problems, and provides a printer device capable of easily inserting a photographic paper drawn from a photographic paper roll into a guide mechanism and guiding it to a thermal head. With the goal.

In order to solve the above-described problems, a printer device according to the present invention includes a thermal head that performs printing on a photographic paper drawn from a photographic paper roll, and a photographic paper drawn from a photographic paper roll set at a predetermined setting position. A guide mechanism for guiding the photographic paper inserted into the insertion port to the thermal head, the guide mechanism is provided below a predetermined set position of the photographic paper roll, A first guide member having a receiving surface curved in the same direction as the peripheral surface of the photographic paper roll on the upper side, one end is pivotally supported by a rotating shaft provided near the middle of the receiving surface of the first guide member, and the like The end surface is biased so as to be rotatable in the direction of contact with the photographic paper roll, and has a copying surface curved in the same direction as the peripheral surface of the photographic paper roll on the lower side. The copying surface and the receiving surface of the first guide member The second guide member between which is the insertion port For example, when the printing paper roll to a predetermined set position is not set Ru further comprises a mechanism for forcibly positioned on a side where the insertion opening is narrowed and the second guide member.

According to the present invention, it has a thermal head for performing printing on the photographic paper drawn from the photographic paper roll, and an insertion port for inserting the leading end of the photographic paper drawn from the photographic paper roll set at a predetermined set position. A guide mechanism that guides the photographic paper inserted into the insertion slot to the thermal head. The guide mechanism is provided below a predetermined setting position of the photographic paper roll, and the upper side is the same as the peripheral surface of the photographic paper roll. A first guide member having a receiving surface curved in the direction, and one end pivotally supported by a rotation shaft provided near the middle of the receiving surface of the first guide member, and the other end rotating in a direction in contact with the photographic paper roll. A second guide having a copying surface that is urged freely and curved in the same direction as the peripheral surface of the photographic paper roll on the lower side, and the insertion surface is between the copying surface and the receiving surface of the first guide member and a member, the printing paper roll to a predetermined set position is Se Guiding the thermal head inserted easily guide mechanism because with forced further a mechanism to position the printing paper drawn out of the paper roll on the side that narrows the insertion opening of the second guide member when not bets It becomes possible to do.

It is a perspective view of the printer apparatus by Embodiment 1 of this invention. It is a side view of the printer apparatus by Embodiment 1 of this invention. It is a side view of the printer apparatus by Embodiment 1 of this invention. It is a figure which shows the operation | movement which guides the printing paper by Embodiment 1 of this invention to a guide member. It is a figure which shows the operation | movement which guides the printing paper by Embodiment 1 of this invention to a guide member. It is a figure which shows the operation | movement which guides the printing paper by Embodiment 1 of this invention to a guide member. It is a sectional side view of the printer apparatus in case the roll diameter of the roll paper by Embodiment 1 of this invention is small. It is a side view of the vicinity of the movable guide member when the roll diameter of the roll paper according to Embodiment 1 of the present invention is small. It is a figure which shows the positional relationship of the roll paper and rotating shaft by Embodiment 1 of this invention. It is a figure which shows the positional relationship of the roll paper and rotating shaft by Embodiment 1 of this invention. It is a side view of the movable guide member by Embodiment 2 of this invention. It is a sectional side view of the printer apparatus by Embodiment 2 of this invention. It is a perspective view of the printer apparatus by Embodiment 3 of this invention. It is a side view of the printer apparatus by Embodiment 3 of this invention. It is a figure which shows the structure of the lever by Embodiment 3 of this invention. It is a side view of the printer apparatus by Embodiment 3 of this invention. It is a side view of the printer apparatus by Embodiment 3 of this invention.

  Embodiments of the present invention will be described below with reference to the drawings.

<Embodiment 1>
FIG. 1 is a perspective view of a printer apparatus according to Embodiment 1 of the present invention. 2 and 3 are side views of the printer apparatus according to the first embodiment. As shown in FIGS. 1 to 3, the printer apparatus main body 1 (printer apparatus) according to the first embodiment performs printing on a photographic paper 10 a drawn from a roll paper 10 (photographic paper roll) that is a roll-shaped photographic paper. The thermal head 2, the platen roller 3 disposed opposite to the thermal head, a guide member 8 (first guide member) for guiding the photographic printing paper 10a to the thermal head 2, and a rotating shaft rotatably held by the guide member 8 6 (rotating shaft), a movable guide member 4 (second guide member) supported by the rotating shaft 6 and rotating in synchronization with the rotating shaft 6, and inserted in the rotating shaft 6 and rotated in synchronization with the rotating shaft 6 Lever 7 is provided. A spring 5 that biases the lever 7 is provided, and one end (one end) of the spring 5 is fixed to the printer device 1.

  The guide mechanism in the first embodiment includes a guide member 8 and a movable guide member 4. That is, the guide mechanism has an insertion port 19 into which the leading end of the photographic paper 10a drawn from the roll paper 10 set at a predetermined setting position is inserted, and the photographic paper 10a inserted into the insertion port 19 is inserted into the thermal head. 2, a guide member 8 (first guide member) provided below the predetermined set position of the roll paper 10 and having a receiving surface 20 curved in the same direction as the peripheral surface of the roll paper 10 on the upper side. And one end is pivotally supported by a rotating shaft 6 (rotating shaft) provided in the vicinity of the middle of the receiving surface 20 of the guide member 8, and the other end is urged so as to be rotatable in a direction contacting the roll paper 10, A movable guide member 4 (first guide) having a copying surface 21 curved in the same direction as the peripheral surface of the roll paper 10 on the lower side and the insertion port 19 between the copying surface 21 and the receiving surface 20 of the guide member 8. 2 guide members).

  As shown in FIG. 2, the holding member 9 that holds the roll paper 10 is set at a predetermined setting position of the printer apparatus main body 1. FIG. 2 shows how the holding member 9 is set in the printer apparatus main body 1. 3 shows a state in which the leading end of the photographic paper 10a pulled out from the roll paper 10 is inserted from the insertion port 19 (that is, between the copying surface 21 of the movable guide member 4 and the receiving surface 20 of the guide member 8). Is shown.

  As shown in FIG. 3, when inserting the photographic paper 10a into the insertion slot 19, the roll paper 10 is rotated in the direction of arrow A in FIG. The leading end of the photographic paper 10 a appears at the leading end of the movable guide member 4. Thereafter, the roll paper 10 is rotated in the direction of the arrow B in FIG. 5, whereby the leading end of the photographic paper 10a is guided along the back surface (the copying surface 21) of the movable guide member 4 as shown in FIG. . Thereafter, the roll paper 10 is further rotated in the direction of arrow B in FIG. 5, thereby feeding the leading end of the photographic paper 10 a toward the thermal head 2. In the path of the photographic paper 10a from the rotary shaft 6 to the thermal head 2, a ceiling (not shown) is provided above the receiving surface 20 along the receiving surface 20 in order to prevent the photographic paper 10a from floating. May be.

  FIG. 7 is a side sectional view of the printer apparatus when the roll diameter of the roll paper 10 according to the first embodiment is small. FIG. 8 is a side view of the vicinity of the movable guide member 4 when the roll diameter of the roll paper 10 according to the first embodiment is small. As shown in FIGS. 7 and 8, when the roll diameter of the roll paper 10 is small, the movable guide member 4 is always on the outer periphery of the roll paper 10 via the lever 7 and the rotating shaft 6 by the bias of the spring 5. In contact.

  9 and 10 are diagrams showing the positional relationship between the roll paper 10 and the rotating shaft 6 according to the first embodiment.

  FIG. 9 shows that the wrapping angle of the photographic paper 10 a wound around the rotation shaft 6 varies depending on the winding diameter of the roll paper 10 when the insertion opening of the photographic paper 10 a is disposed at a position where the insertion port can be seen from the position of the viewpoint A. ing. As shown in FIG. 9, when the roll paper 10 has a large winding diameter, the winding angle of the photographic paper 10a wound around the rotary shaft 6 is θ1. When the roll diameter of the roll paper 10 is reduced, the winding angle of the photographic paper 10a wound around the rotating shaft 6 changes to θ2. Accordingly, as the winding angle changes from θ1 to θ2, the tension applied to the photographic paper 10a increases, so that damage to the photographic paper 10a increases, for example, a fold mark remains on the photographic paper 10a.

  FIG. 10 shows a case where the rotation shaft 6 is located immediately below the roll paper 10 and the insertion port 19 of the photographic paper 10a is arranged at a position where it cannot be seen from the position of the viewpoint A. As shown in FIG. 10, by providing the rotating shaft 6 directly below the roll paper 10, the winding angles θ1 and θ2 of the photographic paper 10a wound around the rotating shaft 6 are smaller than the state of FIG. Damage to the photographic paper 10a is reduced. However, in FIG. 10, the insertion port 19 is not visible particularly when the roll paper 10 has a large winding diameter, making it difficult to insert the photographic paper 10 a.

  On the other hand, in the printer device according to the first embodiment, as shown in FIGS. 7 and 8, when the user inserts the photographic paper 10 a into the insertion slot 19, the photographic paper 10 a is guided along the back surface of the movable guide member 4. By doing so, the photographic paper 10a can be reliably fed from the guide mechanism toward the thermal head 2. Further, even when the roll diameter of the roll paper 10 is small, the winding angle of the photographic paper 10a wound around the rotating shaft 6 of the movable guide member 4 can be reduced.

  From the above, according to the first embodiment, when the user inserts the photographic paper 10 a drawn from the roll paper 10 into the insertion port 19 of the guide mechanism, the photographic paper 10 a is placed on the back surface of the movable guide member 4. The photographic paper 10a can be easily guided to the guide mechanism by being inserted along the (copied surface 21), and the photographic paper 10a can be reliably fed from the guide mechanism toward the thermal head 2. Further, even if the outer diameter of the roll paper 10 changes, the photographic paper 10a can be easily guided to the guide mechanism. Further, the wrapping angle of the photographic paper 10a on the rotating shaft 6 can be reduced, and damage to the photographic paper 10a can be reduced.

<Embodiment 2>
FIG. 11 is a side view of the movable guide member 11 according to the second embodiment. The second embodiment is characterized in that the movable guide member 11 (second guide member) is provided with at least one or more rollers at a predetermined location including the distal end portion of the movable guide member 11. . Since other configurations are the same as those of the first embodiment, description thereof is omitted here.

  As shown in FIG. 11, the movable guide member 11 is provided on the roller 12 provided at the tip, the roller 13 provided on the inner side, and the rotation shaft (for example, the rotation shaft 6 shown in FIG. 2). Rollers 15a to 15e (hereinafter also simply referred to as rollers 15) provided on the back surface (copying surface 21) side that is a contact portion between the roller 14 and the photographic paper 10a are provided.

  FIG. 12 is a side sectional view of the printer apparatus according to the second embodiment. As shown in FIG. 12, the photographic paper 10 a drawn out from the roll paper 10 is guided toward the thermal head 2 from the guide mechanism while contacting the rollers 12, 15, and 14 in this order. The roller 13 is provided so as to always urge the roll paper 10.

  From the above, according to the second embodiment, by providing a roller on the movable guide member 11, damage to the photographic paper 10a caused by a load caused by contact between the photographic paper 10a and the movable guide member 11 is prevented. Can be reduced.

<Embodiment 3>
FIG. 13 is a perspective view of the printer apparatus according to the third embodiment, and FIG. 14 is a side view of the printer apparatus according to the third embodiment. FIG. 15 is a diagram illustrating a configuration of the lever 16 according to the third embodiment. As shown in FIGS. 13 to 15, in the third embodiment, a spring 17 having one end fixed to the printer apparatus main body 1 and the other end fixed to the lever 16 and a spring when the roll paper 10 is not set. 17 is provided with a lever 16 that urges the movable guide member 4 toward the side where the insertion port 19 is narrowed. That is, as shown in FIG. 14, when the roll paper 10 (photographic paper roll) is not set at a predetermined setting position, the movable guide member 4 (second guide member) is forced to the side where the insertion port 19 is narrowed. And a mechanism (spring 17, lever 16) that is positioned in the position. Since other configurations are the same as those of the first embodiment, description thereof is omitted here.

  16 and 17 are side views of the printer apparatus according to the third embodiment. As shown in FIG. 16, when the holding member 9 that holds the roll paper 10 is not set at a predetermined installation position, the movable guide member 4 has the insertion opening 19 formed by the lever 16 that is biased via the lever 7. Located on the narrowing side.

  On the other hand, as shown in FIG. 17, when the holding member 9 is set at a predetermined position, the lever 16 is moved away from the movable guide member 4 by a guide portion (not shown) provided on the holding member 9. When moved, the movable guide member 4 is urged to contact the outer periphery of the roll paper 10.

  From the above, according to the third embodiment, when the roll paper 10 is not set at a predetermined setting position, the movable guide member 4 is positioned on the side where the insertion port 19 is narrowed. Can be set not only from above but also from the front.

  As an application example of the present invention, the present invention can be applied to a printer apparatus having a guide mechanism that guides photographic paper drawn from roll paper to a thermal head located on the back side of the roll paper via the lower side of the roll paper.

  DESCRIPTION OF SYMBOLS 1 Printer apparatus main body, 2 Thermal head, 3 Platen roller, 4 Movable guide member, 5 Spring, 6 Rotating shaft, 7 Lever, 8 Guide member, 9 Holding member, 10 Roll paper, 10a Printing paper, 11 Movable guide member , 12, 13, 14, 15 Roller, 16 Lever, 17 Spring, 18 Guide member.

Claims (2)

A thermal head for printing on the photographic paper drawn from the photographic paper roll;
A guide mechanism that has an insertion port for inserting a leading end of the photographic paper drawn from the photographic paper roll set at a predetermined setting position, and guides the photographic paper inserted into the insertion port to the thermal head; With
The guide mechanism is
A first guide member provided below the predetermined set position of the photographic paper roll and having a receiving surface curved in the same direction as the peripheral surface of the photographic paper roll on the upper side;
One end is pivotally supported by a rotation shaft provided near the middle of the receiving surface of the first guide member, and the other end is urged to freely rotate in a direction in contact with the photographic paper roll. A second guide member having a copying surface curved in the same direction as the peripheral surface of the photographic paper roll, and the insertion port between the copying surface and the receiving surface of the first guide member;
Equipped with a,
Wherein when the printing paper roll to a predetermined set position is not set yet Ru provided with a mechanism for forcibly positioning the second guide member on the side where the insertion slot is narrowed, a printer device.   The printer apparatus according to claim 1, wherein the second guide member is provided with at least one roller at a predetermined location including the other end of the second guide member.

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