JP2017222495A - Adhesive transfer unit and printer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an adhesive transfer unit capable of stabilizing conveyance of a sheet and suppressing a delay in conveyance of a portion of the sheet to be conveyed, to which an adhesive is transferred, while suppressing complication and an increase in the scale of a mechanism, and to provide a printer.SOLUTION: An adhesive transfer unit comprises: a pair of upstream side conveying rollers 51 which conveys a sheet P by holding it therebetween; a transfer part W around which an adhesive tape T with an adhesive S applied thereto, is wound, and which is arranged on one surface side of the conveyed sheet P; and a transfer roller 52 which is provided on the other surface side of the conveyed sheet P, and holds the sheet P between the transfer roller and the transfer part W when the adhesive S of the adhesive tape T wound around the transfer part W is transferred to the one surface P1. At least one of the pair of the upstream side conveying rollers 51 is an upstream side conveyance drive roller 51a rotated by a driving member, and the transfer roller 52 is rotated by the driving member.SELECTED DRAWING: Figure 11

Description

  The present invention relates to an adhesive transfer unit in which an adhesive is transferred to a conveyed sheet, and a printer including the adhesive transfer unit.

  In restaurants and the like, an order table attached to a wall surface or the like is used, and in a store that provides dishes such as pizza by takeout, a product label or the like attached to the product is used. In these order tables and the like, information such as orders is printed on the front surface, and an adhesive is attached to the back surface. Further, since the order table or the like uses adhesive or the like having a weak adhesive force as an adhesive, it can be attached or peeled off like a sticky note.

  Such an order table or the like can be created by a printer equipped with an adhesive transfer unit (see, for example, Patent Document 1 and Patent Document 2). The pressure-sensitive adhesive transfer unit of the printer described in Patent Literature 1 or Patent Literature 2 includes a transfer portion around which a pressure-sensitive adhesive tape coated with a pressure-sensitive adhesive is wound, and a transfer roller. In these adhesive transfer units, the transfer roller is moved so that the transfer roller is placed between the transfer roller and the transfer section, and the transfer roller is separated from the transferred paper. The state changes between the evacuation state. When the transfer roller is in the transfer state, the adhesive is transferred onto the one surface of the paper from the adhesive tape wound around the transfer portion. When the paper is transported while being sandwiched between the transfer section and the transfer roller, the adhesive tape runs while being wound around the transfer section, and from the portion of the adhesive tape that is wound around the transfer section to the paper. The transfer of the adhesive is continued. On the other hand, when the transfer roller is in a retracted state away from the conveyed sheet, the sheet is separated from the transfer unit and the adhesive is not transferred. According to the printers described in Patent Document 1 and Patent Document 2, the transfer roller is moved so that the adhesive is transferred to the conveyed paper, and the adhesive is not transferred to the conveyed paper. By shifting the state between the states, the adhesive can be transferred to a desired portion in the sheet conveyance direction. Hereinafter, a state where the adhesive is transferred to the conveyed paper may be simply referred to as a transferred state, and a state where the adhesive is not transferred to the conveyed paper is referred to as a non-transfer state. Sometimes.

  Here, in the paper to be conveyed, the load between the transfer portion and the transfer roller to which the adhesive is transferred and the load for running the adhesive tape, the load for removing the adhesive from the adhesive tape, etc. Occurs. For this reason, there is a possibility that the conveyance of the paper is delayed and a conveyance failure occurs. Even if the adhesive is transferred to a part of the paper width direction that is perpendicular to the paper transport direction, the transport of the part to which the adhesive is transferred is more than the transport of the other part to which the adhesive is not transferred. This is also a cause of conveyance failure.

  On the other hand, there has been proposed a printer including an adhesive transfer unit that rotates a transfer roller to eliminate a delay in conveyance of a portion of an conveyed sheet to which an adhesive is transferred (for example, Patent Document 3 and Patent). Reference 4 etc.).

  The pressure-sensitive adhesive transfer unit of the printer described in Patent Document 3 or Patent Document 4 includes a pressure-sensitive adhesive cartridge and a transfer roller that is rotated by a driving member such as a motor. The pressure-sensitive adhesive cartridge contains a pressure-sensitive adhesive tape coated with a pressure-sensitive adhesive, and has a supply reel for feeding out the pressure-sensitive adhesive tape, a transfer unit, and a take-up reel for winding the pressure-sensitive adhesive tape. The pressure-sensitive adhesive tape fed out from the feeding reel is wound around the transfer portion, and after passing through the transfer portion, is wound around the take-up reel. Further, the state of the adhesive cartridge is changed between a state in which the transfer portion around which the adhesive tape is wound is sandwiched between the transfer paper and a state in which the transfer paper is separated from the transfer paper. It works like that. When the adhesive cartridge operates and the transfer unit sandwiches the conveyed paper with the transfer roller, the adhesive is transferred from the adhesive tape wound around the transfer unit to one surface of the paper. The sheet is conveyed by a transfer roller that is rotated by a driving member. In this way, it is intended to eliminate the conveyance delay of the portion to which the adhesive is transferred in the conveyed paper. When the transfer unit is separated from the conveyed paper, the adhesive is not transferred to the paper.

  Further, in the printer described in Patent Document 3, a pair of conveyance rollers that convey the sheet with the sheet interposed therebetween are provided on the upstream side of the transfer unit and the transfer roller in the sheet conveyance direction. One of the pair of conveying rollers is a driving roller that is rotated by a driving member. When the driving roller is rotated by the driving member, the sheet is conveyed while being sandwiched between the pair of conveying rollers. Thereby, the paper can be stably conveyed.

JP 2014-223743 A JP 2011-235595 A JP 2014-097851 A JP2015-209325A

  However, in the printers described in Patent Document 3 and Patent Document 4, it is possible to suppress the transport delay of the portion to which the adhesive is transferred in the transported paper as compared with the printer described in Patent Document 1 and Patent Document 2. However, there is a possibility that the mechanism becomes complicated and large due to the provision of the drive member for rotating the transfer roller. In the printer described in Patent Document 3, since the sheet is conveyed by rotating the transfer roller, a pair of conveyance rollers may be omitted. However, there is a possibility that the conveyance of the sheet may become unstable. Absent.

  SUMMARY OF THE INVENTION In view of the above circumstances, the present invention stabilizes the conveyance of a sheet while suppressing the complexity and enlargement of the mechanism, and further suppresses the conveyance delay of the portion where the adhesive is transferred in the conveyed sheet. An object is to provide a unit and a printer.

The pressure-sensitive adhesive transfer unit of the present invention that solves the above-described object includes a pair of transport rollers that transport the paper sandwiched in the thickness direction of the paper,
An adhesive tape coated with an adhesive is wound around, and a transfer section disposed on one side of the conveyed paper;
When the adhesive of the adhesive tape provided on the other surface side of the conveyed paper and wound around the transfer portion is transferred to the one surface, the paper is sandwiched between the transfer portion. A transfer roller,
At least one of the pair of transport rollers is a driving roller rotated by a driving member,
The transfer roller is rotated by the driving member.

  The transfer unit may transfer the adhesive to the entire width of the paper in the paper width direction, or may transfer the adhesive to a part of the paper width direction (for example, the central portion). .

  According to the pressure-sensitive adhesive transfer unit of the present invention, since the transfer roller is rotated by the drive member, it is possible to suppress a conveyance delay of a portion to which the pressure-sensitive adhesive is transferred in the conveyed paper. Further, the conveyance of the sheet can be stabilized by conveying the sheet by the pair of conveyance rollers. In addition, since the transfer roller is rotated by the drive member that rotates the drive roller of the pair of transport rollers, an individual drive member that rotates the transfer roller becomes unnecessary, and the mechanism is complicated. Increase in size can be suppressed.

  In the adhesive transfer unit of the present invention, the pair of transport rollers may be disposed upstream of the transfer unit in the transport direction of the paper.

  In this way, for example, a sheet to be cut by the cutting mechanism of the printer can be held between the pair of transport rollers, and the minimum sheet length of the sheet can be set short.

  Here, in the conveyance direction of the sheet, there is provided a pair of downstream conveyance rollers that are arranged on the downstream side of the transfer unit and sandwich the sheet in the thickness direction of the sheet. It may have a driving roller rotated by the driving force. If this aspect is adopted, the drive member can rotate the drive roller of the pair of transport rollers, the drive roller of the pair of downstream transport rollers, and the transfer roller, thereby suppressing the complexity and enlargement of the mechanism. However, the conveyance of the paper can be further stabilized. Further, by adopting a mode in which the driving force of the driving member is transmitted to these rollers, the rotation of these rollers can be easily synchronized, and the conveyance of the paper is further stabilized.

In the pressure-sensitive adhesive transfer unit of the present invention, a transfer mechanism that transmits the driving force of the driving member from the pair of transport rollers to the transfer roller is provided.
The transmission mechanism may be a belt connecting the driving roller and the transfer roller.

  By adopting the belt as the transmission mechanism, the sheet to be conveyed is not bent and can be conveyed more stably. Further, the belt also has an effect of functioning as a support for transferring the adhesive to the paper.

  The transmission mechanism is not limited to the belt but may be a combination of a plurality of gears.

The drive roller is fixed in position,
The transfer roller includes a transfer state in which the conveyed paper is sandwiched between the transfer portion and the adhesive of the adhesive tape wound around the transfer portion is transferred to the one surface, and is separated from the paper. It is also one of preferred embodiments that the state of the pressure-sensitive adhesive changes between a non-transferred and retracted state on the one surface.

  As described above, when the transfer roller is in a state of transition between the transfer state and the retracted state, a mechanism for moving the transfer roller is provided by providing an individual drive member that rotates the transfer roller. There is also a risk of increasing complexity and cost. For this reason, in this aspect, the advantage that a separate driving member for rotating the transfer roller is not required is particularly great.

The printer of the present invention that solves the above-described object includes a printing mechanism that performs printing on the conveyed paper,
The pressure-sensitive adhesive transfer unit according to any one of claims 1 to 4, wherein the pressure-sensitive adhesive is transferred onto a sheet printed by the printing mechanism.

  According to the adhesive transfer unit and printer of the present invention, the conveyance of the paper is stabilized while suppressing the complexity and enlargement of the mechanism, and further, the conveyance delay of the portion to which the adhesive is transferred in the conveyed paper is reduced. Can be suppressed.

It is the perspective view which looked at the state which opened the rear cover of the printer which is one Embodiment of this invention from the front right diagonally upward. It is the perspective view which looked at the printer which is one embodiment of the present invention from the front right slanting upper part. (A) is the sectional view on the AA line of the adhesive cartridge shown in a circle in FIG. 2, and (b) is the part where the adhesive tape fed from the feeding reel is wound around the winding roller. FIG. 5 is a diagram conceptually illustrating a state in which a sheet is conveyed while being pressed. FIG. 3 is a sectional view of the printer shown in FIG. It is a conceptual diagram for demonstrating the decurling mechanism shown in FIG. It is the perspective view which looked at the whole 1st unit from diagonally left rear. It is a figure which shows the principal part of the 1st unit shown in FIG. It is a figure for demonstrating the transition of the state between a transfer state and a retracted state in a transfer roller. FIG. 3 is a perspective view of the rear cover removed from the printer shown in FIG. It is a figure which extracts and shows the principal part of the 2nd unit in the adhesive transfer unit shown in FIG. (A) is a figure which shows notionally the state in which a transfer roller is in a transfer state, and the state to which an adhesive agent is transcribe | transferred to the conveyed paper is seen from the side. (B) is the figure which looked at a mode that a paper is conveyed with a conveyance roller from the other surface side. (C) is the figure which looked at a mode that a paper is conveyed by a conveyance roller from the one surface side. It is a figure for demonstrating the transfer to the non-transfer state from the state transferred. It is a conceptual diagram for demonstrating the part which the guide part contact | connects in one surface of a paper. FIG. 3 is a block diagram illustrating a circuit configuration of the printer illustrated in FIGS. 1 and 2. It is a figure which shows the 1st modification from which the structure of a peeling guide differs. It is a figure which shows the 2nd-4th modification from which the structure of a peeling guide differs.

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

  A printer according to an embodiment of the present invention stores a roll paper in which a long paper is wound in a roll shape, performs printing on the paper while conveying the paper from the stored roll paper, It is a printer to cut. The printer also includes an adhesive transfer unit that is an embodiment of the present invention, and the adhesive transfer unit transfers the adhesive to the surface of the paper opposite to the surface to be printed. Is. The pressure-sensitive adhesive transfer unit of the present invention is not limited to a mode mounted on a printer, but can be mounted on various devices including a transport mechanism for transporting paper.

  1 and 2 are perspective views of a printer according to an embodiment of the present invention as viewed from diagonally upward on the front right. 1 shows a state where a rear cover 12 described later is opened, and FIG. 2 shows a state where the rear cover 12 is closed. In FIGS. 1 and 2, the diagonally lower left side is the front side (front side), and the diagonally upper right side is the rear side (back side). Hereinafter, the front, rear, left, and right may be properly used based on the state in which each component is assembled to the printer 1.

  As shown in FIGS. 1 and 2, the printer 1 includes a printer main body 11, a rear cover 12, and a front cover 13. The rear cover 12 is pivotally attached to the printer body 11 by one end thereof being hinged to the rear upper portion of the printer body 11, and the printer body can be rotated by rotating the rear cover 12. 11 can be opened and closed. The front cover 13 is detachably attached to the front upper portion of the printer body 11.

  As shown in FIG. 1, the printer main body 11 is provided with a storage unit 111 that stores the roll paper P ′, and FIG. 1 shows a state in which the roll paper P ′ is stored in the storage unit 111. . When the rear cover 12 is closed, a paper discharge port 1 a is formed between the front cover 13 and the rear cover 12. In FIG. 1, the respective parts of the front cover 13 and the rear cover 12 that define the paper discharge port 1 a are indicated by reference numerals of the paper discharge port 1 a. In the printer 1 shown in FIG. 1, a path connecting the storage unit 111 and the paper discharge port 1 a is a paper transport path, and a direction from the storage unit 111 toward the paper discharge port 1 a corresponds to a paper transport direction. In the following description, the sheet conveyance path is simply referred to as a conveyance path, and the sheet conveyance direction is simply referred to as a conveyance direction.

  In FIG. 2, the adhesive cartridge 3 that is one of the components of the adhesive transfer unit is surrounded by a circle, and the adhesive cartridge 3 is shown attached to the rear cover 12. A mounting portion 121 is provided at a central portion in the left-right direction of the rear cover 12, and the adhesive cartridge 3 is mounted on the mounting portion 121. The adhesive cartridge 3 has a snap-fit piece 311 that can be elastically deformed at the rear end portion of the casing 31, and an engaging recess 312 is formed at the lower portion of the front end side. . The adhesive cartridge 3 can be easily attached to and detached from the mounting portion 121 by a so-called snap-fit structure in which the snap-fit piece 311 is elastically deformed. The engaging recess 312 is a configuration for positioning the adhesive cartridge 3 with respect to the rear cover 12 and will be described in detail later.

  FIG. 3A is a cross-sectional view of the adhesive cartridge 3 taken along the line AA in FIG.

  As shown in FIG. 3A, the adhesive cartridge 3 includes an adhesive tape T indicated by a dotted line, a casing 31, and a feeding reel 32, a take-up reel 33, a reverse rotation preventing gear 34, An interlocking gear 37 is provided. The adhesive tape T is narrower than the paper P to be conveyed. A rotatable winding roller 35 is disposed at a position protruding from the casing 31 to the front side (left side in the figure). In FIG. 3A, the winding roller 35 is hidden by guides 36 arranged on the left and right sides.

  In the drawing, the supply reel 32 is rotated clockwise to pay out the adhesive tape T, and the take-up reel 33 is rotated clockwise in the drawing to wind up the adhesive tape T. The feeding reel 32 has teeth 321 on its outer peripheral portion, and the take-up reel 33 has a gear 331 on the back side of the drawing. The interlocking gear 37 meshes with the teeth 321 of the supply reel 32 and the gear 331 of the take-up reel 33, and interlocks the supply reel 32 and the take-up reel 33. Rotates, the take-up reel 33 also rotates. In the figure, most of the interlocking gear 37 is hidden by the supply reel 32 and the take-up reel 33. The reverse rotation prevention gear 34 meshes with the teeth 321 of the supply reel 32, and allows the rotation of the supply reel 32 in the clockwise direction while preventing the rotation of the supply reel 32 in the counterclockwise direction. Thereby, reverse rotation (counterclockwise rotation) of the supply reel 32 in the direction in which the adhesive tape T is wound is prevented. The adhesive tape T fed from the feeding reel 32 is wound around the winding roller 35, passes through the winding roller 35, and is then wound around the winding reel 33.

  FIG. 3B is a diagram conceptually illustrating a state in which the sheet P is conveyed while being pressed against a portion where the adhesive tape T fed from the feeding reel 32 is wound around the winding roller 35.

  The pressure-sensitive adhesive tape T has a pressure-sensitive adhesive S applied to one surface thereof. In the present embodiment, the adhesive S having a weak adhesive force is used as the adhesive S. In FIG. 3B, the surface coated with the adhesive S indicated by the two-dot chain line is turned outward, and wound around the winding roller 35. It is hung. When the paper P is brought into pressure contact with the portion of the adhesive tape T wound around the winding roller 35, the adhesive S is transferred from the adhesive tape T to the paper P. In addition, when the sheet P is conveyed in the conveying direction indicated by the straight arrow (slanting upward in the drawing) in a state where the adhesive tape T is pressed against the portion wound around the winding roller 35, As the adhesive S is transferred, the winding roller 35 rotates clockwise as indicated by the arcuate arrow, and the adhesive tape T runs in the direction indicated by the outlined arrow. Hereinafter, a portion where the adhesive S is transferred from the adhesive tape T wound around the winding roller 35 to the paper P may be referred to as a transfer portion W. Further, for the adhesive S, the adhesive that has been transferred to the paper P is referred to as the transferred adhesive S1, and the untransferred adhesive on the adhesive tape T that is wound around the transfer portion W is referred to as the untransferred adhesive S2. May be distinguished. 3B, the state in which the sheet P is in pressure contact with the transfer portion W is a state in which the adhesive is transferred, the sheet P is separated from the transfer portion W, and the adhesive S is not transferred to the sheet P. The state becomes a non-transfer state. In the following description, the surface of the paper P to which the adhesive S is transferred (the state before the adhesive S is transferred, the state where the adhesive S is transferred, and the transfer portion without the adhesive S being transferred) (Including all the states that have passed through W) may be referred to as one surface P1, and the surface of the paper P opposite to the one surface P1 may be referred to as the other surface P2. The other surface P2 is a surface on which printing is performed by a printing mechanism 22 (see FIG. 4) described in detail later.

  When the paper P is conveyed while being pressed against the transfer portion W and the adhesive tape T travels in the direction of the white arrow, the feeding reel 32 shown in FIG. Rotate around. In conjunction with this, the take-up reel 33 also rotates clockwise, and the adhesive tape T that has passed through the transfer portion W is taken up by the take-up reel 33. That is, in the adhesive cartridge 3 of the present embodiment, the adhesive tape T travels in a transferred state, and the travel of the adhesive tape T stops in a non-transferred state. Thereby, the running of the adhesive tape T in the non-transfer state is avoided, and there is no uneconomic problem that the adhesive tape T is wound around the take-up reel 33 without transferring the adhesive S to the paper P. .

  Here, even if the force of pressing the paper P against the transfer portion W is released, the transferred adhesive S1 and the untransferred adhesive S2 may not be easily separated by the adhesive force of the adhesive S. When the sheet P is conveyed in a state where the transferred adhesive S1 and the untransferred adhesive S2 are not separated even though the force for pressing the sheet P against the transfer portion W is released, the sheet P is adhered to the adhesive tape. There is a risk of being caught in T (winding) and causing a conveyance failure. In addition, when the sheet P is transported in a state where the transferred adhesive S1 and the untransferred adhesive S2 are not divided even though the force for pressing the sheet P against the transfer portion W is released, the sheet P is transported. The adhesive tape T is sent out along with the paper P, and the length of the transferred adhesive S1 in the transport direction may be longer than the intended length. Therefore, a peeling guide 7 (see FIG. 4 and FIG. 9, etc.) is provided to facilitate the separation of the transferred adhesive S1 and the untransferred adhesive S2. Although detailed description will be given later, the peeling guide 7 has a guide portion G (see FIG. 9, FIG. 10, etc.) that contacts the one surface P <b> 1.

  4 is a cross-sectional view of the printer shown in FIG.

  In FIG. 4, the transport path R until the paper drawn from the roll paper P ′ stored in the storage unit 111 is discharged from the paper discharge port 1 a is indicated by a thick dotted arrow. In the conveyance path R, the roll paper P ′ side accommodated in the accommodation unit 111 is the upstream side, and the paper discharge port 1 a side is the downstream side.

  Inside the printer 1, a decurling mechanism 21, a printing mechanism 22, a cutter mechanism 23, and an adhesive transfer unit 10 are arranged in the order of description from the roll paper P ′ accommodated in the accommodating portion 111 toward the downstream side in the transport direction. ing. The pressure-sensitive adhesive cartridge 3 described above is included in the pressure-sensitive adhesive transfer unit 10. The paper transported in the transport path R is printed on the other surface P2 (see FIG. 2B) by the printing mechanism 22, and the adhesive is transferred to the one surface P1 by the adhesive transfer unit 10. Is done. In the following description, one surface side of the sheet conveyed along the conveyance path R may be simply referred to as one surface side, and the other surface side of the sheet conveyed along the conveyance path R is simply referred to as the other surface. Sometimes referred to as the side. In FIG. 4, one surface side R1 and the other surface side R2 are shown.

  FIG. 5 is a conceptual diagram for explaining the decurling mechanism shown in FIG.

  The roll paper P ′ is obtained by winding a long paper in a roll shape, and the paper P drawn from the roll paper P ′ has a curl. Due to this curl, the sheet P is curled with one side P1 to which the adhesive is transferred inward, and after the sheet P is discharged from the sheet discharge port 1a (see FIG. 4), the one side P1 becomes the rear cover. 12 (see FIG. 4) may stick to the exterior surface. Further, the curled sheets P may stick to each other due to the transferred adhesive S1 (see FIG. 3B). Therefore, in this embodiment, a decurling mechanism 21 that corrects curling of the paper P is provided.

  As shown in FIGS. 4 and 5, the decurling mechanism 21 includes a decurling member 211 and a pressing member 212. The decal member 211 includes a plate-shaped main body portion 2111, a squeezing portion 2112 provided on the downstream side of the main body portion 2111 in the transport direction, and a spring 2113. The ironing part 2112 is constituted by a metal shaft, for example. The spring 2113 urges a portion of the main body portion 2111 on the downstream side in the conveyance direction obliquely upward to the right in the drawing, whereby the paper P is bent at a portion in contact with the ironing portion 2112. When the paper P is transported and passes through the ironing part 2112 in a state where the paper P is bent, the paper P is ironed by the ironing part 2112 and the curl of the paper P can be corrected.

  As the roll diameter of the roll paper P ′ decreases, the curl becomes stronger and the degree to which the cut paper P is rounded increases. For this reason, in this embodiment, the presser member 212 is provided that increases the curl correction force when the roll diameter of the roll paper P ′ decreases.

  The pressing member 212 includes an arm 2121, a pressing portion 2122, and a shaft 2123. The arm 2121 rotates around the shaft 2123 in accordance with the change in the roll diameter of the roll paper P ′. One end of the arm 2121 contacts the outer peripheral surface of the roll paper P ′, and as shown by the one-dot chain line, When the roll diameter of the paper P ′ decreases, one end side rotates downward. When the arm 2121 rotates, the presser portion 2122 is pressed by the lower end portion of the arm 2121 and rotates around the shaft 2123. The presser portion 2122 is formed on the squeezed portion 2112 on one surface P1 of the paper P. Suppress the part upstream in the conveyance direction from the contact part. As a result, the angle at which the paper P is bent at the portion in contact with the ironing portion 2112 becomes small, and the curl of the paper P can be corrected with a greater force. Thus, if the aspect provided with the decurling mechanism 21 is adopted, the curl of the paper P can be corrected.

  As shown in FIG. 4, the printer 1 is provided with a printing mechanism 22 on the downstream side in the transport direction from the decurling mechanism 21. The printing mechanism 22 includes a platen roller 221 and a print head 222. The paper drawn from the roll paper P ′ and passing through the decurling mechanism 21 is sandwiched between the platen roller 221 and the print head 222. The platen roller 221 is rotated clockwise by a stepping motor (not shown). As the platen roller 221 rotates, the paper is pulled out from the roll paper P ′, and the pulled-out paper is transported downstream in the transport direction. The print head 222 has a plurality of heat generating elements arranged in the paper width direction perpendicular to the transport direction on the paper, and prints on the other surface P2 (see FIG. 3B) of the paper P. Specifically, a printer control unit 90 (see FIG. 14), which will be described later, selectively heats the plurality of heating elements, thereby printing on a sheet in contact with the heating elements.

  A cutter mechanism 23 is provided downstream of the printing mechanism 22 in the transport direction. The cutter mechanism 23 includes a fixed blade 231 and a cutter unit 232. The cutter unit 232 has a movable blade 2321, and the paper is cut by reciprocating the movable blade 2321 with respect to the fixed blade 231.

  The adhesive transfer unit 10 includes the above-described adhesive cartridge 3, a pair of upstream transport rollers 51, a transfer roller 52, a pair of downstream transport rollers 54, a transfer roller moving mechanism 6, and a peeling guide 7.

  The pair of upstream-side transport rollers 51 are disposed downstream of the cutter mechanism 23 in the transport direction, and sandwich the transported paper. The transfer roller 52 is provided so as to be freely contacted and separated from the transfer portion W by being moved by the transfer roller moving mechanism 6. The pair of downstream-side transport rollers 54 is disposed on the downstream side in the transport direction with respect to the transfer unit W and the transfer roller 52, and sandwiches the transported paper. The peeling guide 7 rotates around the shaft shaft 71 as a rotation center in a direction toward the other surface side R2 (front side in the drawing) and a direction opposite to the direction toward the other surface side R2 (back side in the drawing). It moves. In the adhesive cartridge 3 described above, the engaging recess 312 is engaged with the shaft shaft 71 of the peeling guide 7, and the engaging protrusion 311 a of the snap fit piece 311 is formed in the mounting portion 121 of the rear cover 12. 1211 is engaged. By this aspect, the adhesive cartridge 3 is detachably positioned with respect to the mounting portion 121, thereby fixing the position of the transfer portion W. Thus, in this embodiment, since the aspect which fixes the adhesive cartridge 3 to the rear cover 12 is employ | adopted, the mechanism which operates the adhesive cartridge 3 becomes unnecessary. For this reason, the mechanism for operating the adhesive cartridge 3 does not cause the rear cover 12 to become heavy, and there is no possibility that the operability when opening and closing is deteriorated. Furthermore, it is not necessary to crawl the lead wire connected to the mechanism for operating the adhesive cartridge 3 around the rear cover 12, so that problems such as disconnection do not occur.

  The adhesive transfer unit 10 is composed of a first unit 10 a housed in the front cover 13 and a second unit 10 b housed in the rear cover 12. The first unit 10a includes one of the pair of upstream conveyance rollers 51, one of the pair of upstream conveyance rollers 51, one of the pair of downstream conveyance rollers 54, and a transfer roller moving mechanism among the members constituting the adhesive transfer unit 10 described above. 6 and these members are arranged on the other surface side R2. The second unit 10b includes the adhesive cartridge 3, the other of the pair of upstream transport rollers 51, the other of the pair of downstream transport rollers 54, and the peeling guide among the members constituting the adhesive transfer unit 10 described above. 7 and these members are arranged on one surface side R1.

  FIG. 6 is a perspective view of the entire first unit as viewed obliquely from the left rear. In FIG. 6, the upper left side of the figure is the front side, and the lower right side of the figure is the rear side. FIG. 7 is a diagram showing a main part of the first unit shown in FIG. In FIGS. 6 and 7, the transport route R is indicated by a thick dotted line. Further, in FIG. 7, for convenience of explanation, the transfer portion W shown in FIG.

  As shown in FIG. 6, the first unit 10 a includes a casing 41, a rear side wall portion 411 is provided on the rear side portion of the casing 41, and side wall portions 412 are provided on the left and right sides of the casing 41, respectively. Is provided. The rear side wall 411 is formed with a central opening 411a that is greatly opened in the vertical direction at the central portion in the left-right direction. In addition, upstream side openings 411b having smaller vertical dimensions than the central opening 411a are formed on the lower side portions of the left and right sides of the central opening 411a in the rear side wall portion 411, respectively. Is formed with a downstream opening 411c.

  Three upstream transport rollers 51 are provided on the upstream shaft 511 extending in the left-right direction, spaced apart from each other in the left-right direction. The left and right upstream conveyance rollers 51 are arranged in a state where a part thereof is exposed from the upstream opening 411b, and the central upstream conveyance roller 51 is arranged in the central opening 411a. Further, an upstream gear 512 is provided at a portion of the upstream shaft 511 that protrudes from the left side wall portion 412.

  FIG. 7 shows a cross section of the central upstream transport roller 51, and as shown in FIGS. 6 and 7, a transfer roller 52 is provided on the downstream side in the transport direction of the central upstream transport roller 51. Yes. The transfer roller 52 is attached to a transfer roller shaft 521 as shown in FIG. A pair of side plates 42 extending in the transport direction are provided on the left and right sides of the central upstream transport roller 51 and transfer roller 52. In FIG. 7, the side plate 42 arranged on the right side of the pair of left and right side plates 42 is shown. An upstream shaft 511 passes through a portion of the side plate 42 on the upstream side in the conveyance direction, and a transfer roller shaft 521 is attached to a portion of the side plate 42 on the downstream side in the conveyance direction. The pair of side plates 42 is in a direction opposite to the direction toward the one surface side R1 and the direction toward the one surface side R1 with the upstream shaft 511 as the rotation center by the transfer roller moving mechanism 6 described later in detail. It will rotate. Further, as shown in FIGS. 6 and 7, the central upstream conveying roller 51 and the transfer roller 52 are connected by a flat belt 53. Accordingly, when the pair of side plates 42 rotates around the upstream shaft 511 in the rotation direction in the direction toward the one surface side R1 and the direction opposite to the direction toward the one surface side R1, the flat belt 53 is rotated. The transfer roller 52 on which is wound is moved so as to be able to contact with and separate from the transfer portion W. That is, the transfer roller 52 is moved by a transfer roller moving mechanism 6 which will be described in detail later, and the conveyed paper is sandwiched between the transfer unit W and wound around the transfer unit W shown in FIG. The state transitions between a state in which the adhesive S of the adhesive tape T is transferred to the one surface P1 and a state in which the adhesive S is separated from the paper P and is not transferred to the one surface P1. Hereinafter, a state in which the adhesive S of the adhesive tape T wound around the transfer portion W in the transfer roller 52 is transferred to one surface P1 may be referred to as a transfer state. A state of non-transferring to the surface P1 may be referred to as a retracted state.

  The downstream conveying rollers 54 are respectively provided on the left and right sides of the downstream shaft 541 extending in the left-right direction. A part of the downstream transport rollers 54 is disposed in a state of being exposed from the downstream opening 411 c, and is not provided in the central opening 411 a portion on the downstream side in the transport direction of the transfer roller 52. Further, a downstream gear 542 is provided in a portion of the downstream shaft 541 that protrudes from the left side wall portion 412.

  The casing 41 accommodates a conveyance motor. A rotation shaft 43 of the conveyance motor protrudes from the left side wall portion 412, and a pinion gear 431 is attached to the protruding portion. Further, the left side wall portion 412 is provided with a two-stage gear 44 and two connecting gears 45. A pinion gear 431 of the transport motor meshes with the large diameter portion of the two-stage gear 44, and two connecting gears 45 mesh with the small diameter portion of the two-stage gear 44. Further, the upstream gear 512 meshes with one of the connecting gears 45, and the downstream gear 542 meshes with the other connecting gear 45. In the present embodiment, when the transport motor is driven and the pinion gear 431 rotates clockwise as viewed from the left side, the two-stage gear 44 rotates counterclockwise and the two connecting gears 45 rotate clockwise. When the two connecting gears 45 rotate clockwise, the upstream gear 512 and the downstream gear 542 rotate counterclockwise as shown by arrows on the arc in FIG. As a result, the three upstream conveyance rollers 51 attached to the upstream shaft 511 also rotate counterclockwise, and the two downstream conveyance rollers 54 attached to the downstream shaft 541 also rotate counterclockwise. Further, as described above, since the central upstream conveyance roller 51 and the transfer roller 52 are connected by the flat belt 53, the central upstream conveyance roller 51 is opposite to the center as shown by an arc-shaped arrow in FIG. When rotated clockwise, the flat belt 53 travels counterclockwise as indicated by a straight arrow, whereby the transfer roller 52 also rotates counterclockwise as indicated by an arcuate arrow.

  That is, the three upstream conveyance rollers 51, the two downstream conveyance rollers 54, and the transfer roller 52 are drive rollers that are rotated by a conveyance motor as a drive member. Hereinafter, the driving roller of the upstream conveying roller 51 is referred to as an upstream conveying driving roller 51a, and the driving roller of the downstream conveying roller 54 is sometimes referred to as a downstream conveying driving roller 54a. .

  As described above, when the upstream conveyance drive roller 51a, the downstream conveyance drive roller 54a, and the transfer roller 52 are rotated by one drive member, the rotation of these rollers can be easily synchronized. Further, a separate driving member for rotating the transfer roller 52 is not necessary, and the complexity and size of the mechanism can be avoided. Here, in the aspect in which the transfer roller 52 is moved, if a separate driving member for rotating the transfer roller 52 is provided, there is a possibility that the mechanism for moving the transfer roller 52 becomes complicated and the cost increases. For this reason, in the aspect which moves the transfer roller 52, the merit which makes the transfer roller 52 unnecessary becomes large especially.

  In the present embodiment, a mode is adopted in which the driving force of the transport motor that drives the upstream transport drive roller 51 a is transmitted to the transfer roller 52 by the flat belt 53. That is, the flat belt 53 corresponds to an example of a transmission mechanism. The transmission mechanism is not limited to the flat belt 53, and may be a combination of a plurality of gears, and the drive member is not limited to a motor.

  As shown in FIG. 7, the transfer roller moving mechanism 6 includes a solenoid 61, a link plate 62, a connecting rod 63, a pressing piece 64, and a pressing spring 65. The connecting rod 63 is attached to the pressing piece 64 with the lower end portion attached to the link plate 62 and the head 631 penetrating the pressing piece 64, and the connecting rod 63 causes the link plate 62 and the pressing piece 64 to be connected to each other. Are connected. The pressing piece 64 is connected to the side plate 42 and is urged toward the one surface side R <b> 1 by the pressing spring 65.

  FIG. 8 is a diagram for explaining the transition of the state between the transfer state and the retracted state in the transfer roller. FIG. 8 shows a state where the transfer roller 52, the transfer roller moving mechanism 6, the adhesive cartridge 3, and the upstream-side transport roller 51 around which the flat belt 53 is wound are viewed from above. 8A shows a retracted state of the transfer roller 52, and FIG. 8B shows a transferred state of the transfer roller 52.

  As shown in FIGS. 8A and 8B, the plunger 611 of the solenoid 61 is provided with a locking pin 611a that protrudes downward (back side in the drawing in the drawing). The link plate 62 is a plate material having a substantially inverted L shape in plan view, and a right end portion is pivotally supported by a shaft pin 621. In the left side portion of the link plate 62, a slit 62a is formed on the front side, and a guide long hole 62b is formed on the rear side. A locking pin 611a of the solenoid 61 is inserted into the slit 62a, and a guide pin 622 is inserted into the guide long hole 62b. A rectangular hole 64a is formed in the pressing piece 64, and a head 631 of a connecting rod 63 (see FIG. 7) that connects the link plate 62 and the pressing piece 64 protrudes from the rectangular hole 64a.

  When the solenoid 61 is driven from the retracted state of the transfer roller 52 shown in FIG. 8A and the plunger 611 protrudes as shown by a thin straight arrow in FIG. 8B, the latch inserted into the slit 62a. The front portion of the link plate 62 is pushed by the pin 611a, and the link plate 62 rotates slightly counterclockwise while being guided by the guide pin 622 about the shaft pin 621 as indicated by an arcuate arrow. To do. When the link plate 62 rotates counterclockwise, the pressing piece 64 connected by the link plate 62 and the connecting rod 63 moves toward one surface side (rear side) as indicated by a thick straight arrow. . As a result, the side plate 42 rotates about the upstream shaft 511 toward the one surface side R1 (see FIG. 7), and the transfer roller 52 shifts to the transfer state shown in FIG. 8B.

  On the other hand, when the plunger 611 of the solenoid 61 moves backward as shown by a thin straight arrow in FIG. 8A, the link plate 62 rotates clockwise as shown by an arcuate arrow, and the pressing piece 64 presses. As shown by a thick straight arrow against the urging force of the spring 65, it moves in a direction away from the transfer portion W (front side in the figure). As a result, the side plate 42 rotates around the upstream shaft 511 in the direction opposite to the direction toward the one surface (see FIG. 7), and the transfer roller 52 moves away from the transfer portion W, A transition is made to the retracted state shown in FIG.

  As described above, the state of the transfer roller 52 is changed between the transfer state and the retracted state, so that the state can be changed between the transferred state and the non-transfer state. That is, the adhesive can be transferred to a desired position in the transport direction on the transported paper P by adjusting the timing at which the state of the transfer roller 52 is shifted. For example, the adhesive can be transferred over the entire length in the transport direction on the paper P cut by the cutter mechanism 23 shown in FIG. 4, or the adhesive is applied only to the upstream portion in the transport direction or only to the downstream portion in the transport direction. It can also be transferred. Furthermore, it is possible to pass through the transfer portion W without transferring the adhesive at all.

  FIG. 9 is a perspective view of the rear cover removed from the printer shown in FIG. FIG. 10 is a diagram showing an essential part of the second unit in the pressure-sensitive adhesive transfer unit shown in FIG. In FIGS. 9 and 10, the transport route R is indicated by a thick dotted line arrow.

  As shown in FIG. 9, the rear cover 12 is provided with a platen roller 221 in addition to the second unit 10b. The second unit 10b has a front side wall portion 46 erected on the front side portion, and the front side wall portion 46 is formed with a notch portion 46a where the transfer portion W and the peeling guide 7 are exposed to the front side. . In addition, three openings 46b are formed in the front side wall 46 at a position below the notch 46a with a space in the left-right direction. A part of the upstream-side transport roller 51 is exposed from each of the three openings 46b. In the front portion of the top surface of the rear cover 12, inclined portions 122 that are inclined downward toward the front side are formed on both the left and right sides with the peeling guide 7 interposed therebetween. Between the upper end portion of 46, the downstream side conveyance roller 54 is disposed in a partially exposed state. That is, the downstream side conveyance rollers 54 are arranged on both the left and right sides with the transfer portion W interposed therebetween. The three upstream transport rollers 51 described above are driven rollers that rotate as the upstream transport drive roller 51a shown in FIG. 6 rotates. Further, the two downstream transport rollers 54 are driven rollers that rotate as the downstream transport drive roller 54a shown in FIG. 6 rotates.

  The peeling guide 7 includes a pair of side guides 72 provided on both the left and right sides of the transfer unit W, and a connection guide 73 that connects the pair of side guides 72 upstream of the transfer unit W in the transport direction. And viewed from the front side, the upper part is formed in a substantially U shape. As shown in FIG. 10, the side guide 72 has its front end portion inclined to the front side from the front surface of the connecting guide 73 and then the upper end portion 721 inclined to the rear side. The upper end portion 721 is a portion that performs a so-called escape function that prevents the conveyed paper P from coming into contact with the paper and preventing the conveyance.

  In the present embodiment, the front end portion of the peeling guide 7 excluding the front surface of the connecting guide 73 and the upper end portion 721 of the side guide 72 corresponds to the guide portion G that contacts one surface of the sheet. The connection guide 73 is formed with a rib 731 at the central portion in the left-right direction, and the sheet conveyed to the connection guide 73 makes particularly strong contact with the rib 731.

  As described above, the peeling guide 7 rotates around the shaft shaft 71. In addition, the peeling guide 7 has a spring 74 (see FIG. 12) that urges the guide portion G toward the other surface side R2 as indicated by an arc-shaped arrow. In FIG. 10, the spring 74 is hidden in the adhesive cartridge 3. 9 and 10 show a state in which the transfer roller 52 shown in FIG. 7 is in the retracted state, and the guide portion G is in a position advanced toward the other surface side R2 by the urging force of the spring 74. FIG. In a state in which the guide portion G has moved forward, the guide portion G is located on the transport path R side (the front side in the drawing and closer to the transport path R) than the transfer section W, and the sheet that has been transported on the transport path R is The contact with the transfer portion W is prevented.

  On the other hand, when the transfer roller 52 shown in FIG. 7 shifts to the transfer state and the transfer roller 52 sandwiches the conveyed paper P with the transfer portion W, the peeling guide 7 is pressed by the paper P. Thereby, the peeling guide 7 rotates clockwise against the urging force of the spring 74, and the guide portion G moves backward from the advanced position shown in FIG. That is, when the guide portion G is in the retracted position, the conveyed paper is allowed to contact the transfer portion W. In FIG. 9, a state in which the peeling guide 7 is rotated clockwise and the guide portion G is in the retracted position is shown by being circled. Note that the rear cover 12 in the printer 1 is replaced with a rear cover excluding the second unit 10b (having a platen roller 221 of the printing mechanism), and the front cover 13 shown in FIG. By replacing the front cover except for the first unit 10a shown, it can be used as the printer 1 having no adhesive transfer function.

  Next, the conveyance of the sheet by the conveyance roller and the transfer of the adhesive to the conveyed sheet will be described in detail with reference to FIG.

  FIG. 11A is a view conceptually showing a state in which the transfer roller 52 is in a transfer state and the adhesive S is transferred to the conveyed paper P as viewed from the side. In FIG. 11A, the central upstream side conveyance roller 51 in the left-right direction is shown, and the position of the downstream side conveyance roller 54 is indicated by a two-dot chain line. The transport direction is indicated by a straight arrow. FIG. 11B is a view of the state in which the sheet is conveyed by the conveying roller as viewed from the other side, and FIG. 11C illustrates the state in which the sheet is conveyed by the conveying roller from the one side. FIG. In FIG. 11C, the transfer portion W is conceptually shown surrounded by a square. In FIG. 11, the peeling guide is omitted.

  As shown in FIG. 11A, when the paper P is conveyed while being sandwiched between the transfer roller 52 and the transfer portion W, the adhesive S is transferred to one surface P1. In FIG. 11C, the portion S ′ where the adhesive S has been transferred is shown by shading on one surface P1, and in this embodiment, the width of the paper P (the direction perpendicular to the paper transport direction). The adhesive S is transferred from the transfer portion W to the central portion in FIG. Here, in the portion of the paper P to which the adhesive S is transferred, a load when the adhesive tape T is run, a load for peeling the adhesive S from the adhesive tape T, and the like are generated. For this reason, the portion S ′ of the paper P to which the adhesive S has been transferred may be delayed in conveyance and cause poor conveyance as compared with the left and right side portions. For this reason, the transfer roller 52 is connected to the upstream side conveyance drive roller 51a by the flat belt 53, and the transfer roller 52 is also used as a drive roller. Thereby, the conveyance delay of the part S ′ to which the adhesive S on the paper P is transferred can be suppressed. Further, in this embodiment, the flat belt 53 that connects the transfer roller 52 and the upstream side conveyance drive roller 51a travels so that the paper P is also conveyed by the flat belt 53, and the adhesive S on the paper P is transferred. It is possible to further avoid the conveyance delay of the portion S ′. Further, the flat belt 53 can stably convey the paper P without being bent, and the flat belt 53 also functions as a support base when the adhesive S is transferred in the transfer portion W. is there.

  Here, when the paper discharge port 1a shown in FIGS. 2 and 4 is blocked, the paper P is not discharged from the paper discharge port 1a, and the non-discharged paper P is bent and wrinkled. Therefore, the adhesive cartridge 3 may be wound around the adhesive tape T of the transfer portion W and cause a problem in the adhesive cartridge 3. For this reason, the downstream side conveyance roller 54 is provided on the downstream side of the transfer unit W in the conveyance direction. According to this aspect, even when the discharge failure of the paper P from the paper discharge port 1a occurs, the downstream-side transport roller 54 continues to transport the paper P toward the paper discharge port 1a. It is possible to prevent the paper P that has become entangled in the adhesive tape T of the transfer portion W. 11B and 11C, the downstream-side conveyance roller 54 is set so that the downstream-side shaft 541 is aligned with the transfer portion W in the sheet conveyance direction. It may be provided. That is, the downstream side conveyance roller 54 may be anything that conveys the downstream side portion after the transfer unit W across the transfer unit W.

  Further, as shown in FIG. 11C, the downstream-side transport roller 54 is not disposed in the portion S ′ of the paper P where the adhesive S has been transferred. That is, the downstream-side transport roller 54 transports the paper P across a portion excluding both the portion passing through the transfer portion W and the portion after passing through the transfer portion W. For this reason, there is no possibility that the adhesive adheres to the downstream side conveyance roller 54 and becomes dirty. Accordingly, it is possible to prevent a conveyance failure such as a paper jam that occurs when the conveyance roller is contaminated with an adhesive. In addition, although the aspect which performs a non-adhesion process in the downstream conveyance roller 54, or provides an adhesive removal mechanism is also considered, apparatus cost will increase correspondingly. Further, it may be possible to periodically perform maintenance and remove the attached adhesive, but this is not preferable because the maintenance burden increases.

  Further, the downstream-side transport roller 54 of the present embodiment sandwiches the paper P that has been cut and transported by the cutter mechanism 23 shown in FIG. 4, and when the paper P is pulled, the downstream-side transport roller 54 idles. It is what has. As a result, the sheet P is sandwiched by the downstream conveying roller 54 with the downstream portion in the conveying direction coming out of the sheet discharge port 1a (see FIG. 4 and the like), and when the sheet P is pulled by the user, the downstream side The conveyance roller 54 idles, and the paper P can be smoothly taken out from the paper discharge port 1a.

  FIG. 12 is a diagram for explaining the transition from the transferred state to the non-transferred state. In FIG. 12, (a-1), (b-1) and (c-1) are views from above, and (a-2), (b-2) and (c-2) are It is the figure seen from the side. In FIG. 12, (a-1) and (a-2) show how the transfer roller 52 is in the retracted state, and (b-1) and (b-2) show that the transfer roller 52 is The state of the transfer state is shown, and (c-1) and (c-2) show the state of the transfer roller 52 shifting from the transfer state to the retracted state. In FIG. 12, the paper P is indicated by a dotted line, the left side of the figure is the front side, and the right side of the figure is the rear side.

  As shown in FIGS. 12A-1 and 12A-2, when the transfer roller 52 is in the retracted state, the peeling guide 7 is biased by the spring 74, and the guide portion G is moved to the other side. The sheet P is in a position advanced toward the surface side, and the sheet P is guided away from the transfer unit W when one surface P1 thereof is in contact with the guide unit G. As a result, one surface P1 of the paper P is prevented from coming into contact with the transfer portion W. Since the paper P is sandwiched between the pair of downstream-side transport rollers 54 at a position farther from the guide portion G, the paper P is positioned on both the left and right sides of the transfer portion W as shown in FIG. The portions between the guide portions G to be stretched are in a tensioned state, and are in a state along the guide portions G as shown in FIG. This state is a non-transfer state, and even if the paper P is conveyed in this non-transfer state, the adhesive is not transferred to one surface P1.

  Next, when the solenoid 61 (see FIG. 8) is driven and the transfer roller 52 shifts to the transfer state, as shown in FIGS. 12B-1 and 12B-2, the sheet P is transferred to the transfer portion W. And the transfer roller 52. As a result, the peeling guide 7 is pushed against the paper P and rotates clockwise as shown by the arc-shaped arrow in the figure against the urging force of the spring 74, so that the guide portion G is moved to the position shown in FIG. Retreat from the advanced position shown in 1) and (a-2). This state is a transfer state, and when the paper P is conveyed in this transfer state, the adhesive is transferred to one surface of the paper P as described above with reference to FIG. Although not clearly shown in the drawing, the transfer portion W is located on a line connecting a portion where the paper P is sandwiched between the pair of upstream transport rollers 51 and a portion where the paper P is sandwiched between the pair of downstream transport rollers 54. The sheet P is sandwiched between the transfer roller 52 and the transfer roller 52 at a position slightly retracted to the side opposite to the direction in which the peeling guide 7 is urged.

  Next, the solenoid 61 is driven, and the transfer roller 52 moves away from the transfer portion W and shifts from the transfer state to the retracted state as shown in FIGS. 12 (c-1) and 12 (c-2). Then, the peeling guide 7 starts to rotate counterclockwise by the biasing force of the spring 74, and the guide portion G moves forward toward the other surface side. Thereby, the paper P is pushed toward the other surface side by the guide portion G, and the transferred adhesive S1 and the untransferred adhesive S2 are easily separated (see FIG. 3B). As a result, as soon as the transfer roller 52 shifts from the transfer state to the retracted state, the sheet P shifts from the transferred state to the non-transfer state. That is, it is possible to prevent the state in which the untransferred adhesive S2 is transferred to the paper P and transferred even though the transfer roller 52 has shifted to the retracted state. For this reason, it is easy to adjust the length of the transferred adhesive S1 in the transport direction to a desired length by adjusting the timing at which the transfer roller 52 shifts from the transfer state to the retracted state. In addition, although the transfer roller 52 shifts from the transfer state to the retracted state, the sheet P is conveyed in a state where the transferred adhesive S1 and the untransferred adhesive S2 are not separated, and the sheet P is transferred to the adhesive tape T. There is no risk of being caught and causing poor conveyance.

  Here, in this embodiment, as shown in FIG. 12B-2, the adhesive tape T (winding direction) that has passed the transfer portion W and the portion of the paper P that has passed the transfer portion W The angle α is set to be 90 ° or more. If this aspect is adopted, so-called adhesive breakage is improved, and the transferred adhesive S1 and the untransferred adhesive S2 are more easily separated. In this embodiment, since the plunger 611 (see FIG. 8) of the solenoid 61 moves quickly, the sheet P is wound around the transfer roller 52 in the flat belt 53 when the transfer roller 52 shifts from the transfer state to the retracted state. The guide portion G is pushed toward the other surface P2 without contacting the hung portion.

  In this embodiment, when the transfer roller 52 shifts from the retracted state to the transfer state, the guide portion G is pushed by the paper P. However, the width of the transfer roller 52 is increased to increase the transfer roller 52. A mode in which the guide portion G is pushed by 52 may be adopted.

  FIG. 13 is a conceptual diagram for explaining a portion on one side of the sheet that contacts the guide portion. FIG. 13 is a view seen from one side corresponding to FIG. 11C, and the direction from the bottom to the top is the transport direction, and the left-right direction is the paper width direction.

  In FIG. 13, among the portions of the one surface P1 of the paper P that are in contact with the guide portion G, the downstream portion Y1 on the downstream side in the transport direction from the transfer portion where the adhesive is transferred by the transfer portion W is lowered to the left. The parallel portion Y2 deviating from the transfer portion in the paper width direction is subjected to cross hatching, and the upstream portion Y3 upstream of the transfer portion in the transport direction is subjected to right-down hatching.

  The downstream portion Y1 corresponds to a portion of the paper P that deviates from the portion of the paper P in the paper width direction after passing through the transfer portion W in the paper width direction. When the guide portion G is in contact with the downstream portion Y1, the transferred adhesive S1 and the untransferred adhesive S2 are more easily divided when the transfer roller 52 shifts from the transfer state to the retracted state.

  Here, when the transfer roller 52 is in the transfer state, the transferred adhesive S1 and the untransferred adhesive S2 in the portion of the paper P that has passed through the transfer portion W are not divided, and conveyance failure of the paper P is caused. May occur. In this embodiment, even when the transfer roller 52 is in the transfer state, the guide portion G is in contact with the downstream portion Y1, so that the portion of the paper P that has passed the transfer portion W in the transfer state has been transferred. It becomes easy to divide the adhesive S1 and the untransferred adhesive S2.

  Further, the sheet P discharged from the sheet discharge port 1a is prevented from falling down with one side P1 to which the adhesive is transferred facing down, for example, the problem of sticking to the exterior surface of the printer 1 is avoided. can do. In the present embodiment, the conveyance path R of the sheet discharged from the sheet discharge port 1a shown in FIG. 4 is inclined about 15 degrees forward with respect to the vertical direction. Also by the aspect which inclines this conveyance path R to the front side, the paper P discharged from the paper discharge port 1a is less likely to fall down with one side P1 on the lower side. However, since the problem that the installation area of the apparatus becomes larger as the transport path R is tilted to the front side, countermeasures such as tilting the transport path R to the front side are limited by the range of the permissible apparatus installation area. End up. In the present embodiment, by adopting the guide portion G in contact with the downstream portion Y1 of the paper P, the paper P discharged from the paper discharge port 1a with a simple configuration while suppressing an increase in the installation area of the apparatus, It is possible to prevent the tape from falling down with the one surface P1 to which the adhesive has been transferred facing down.

  The parallel portion Y2 shown in FIG. 13 corresponds to a portion of the paper P that deviates in the paper width direction from a portion of the paper P in the paper width direction located at the transfer portion W. When the guide portion G is in contact with the parallel portion Y2, the guide portion G is in contact with the portion of the paper P in the transfer state that is close to the transfer portion to which the adhesive is transferred, and the transfer roller 52 is retracted from the transfer state. When shifting to the state, the transferred adhesive S1 and the untransferred adhesive S2 can be more efficiently divided.

  The upstream portion Y3 corresponds to a part of the full width of the paper P before passing through the transfer portion W. The adhesive is not transferred to the portion of the paper P before passing through the transfer portion W. For this reason, in this embodiment, the guide part G may contact the part of the paper P that is located upstream in the transport direction of the transfer part W. According to this aspect, when the transfer roller 52 shifts from the transfer state to the retracted state, in particular, the transferred adhesive S1 and the untransferred adhesive S2 in the central portion of the paper P in the paper width direction are efficiently used. Can be divided.

  In the printer 1 of the present embodiment, conveyance and cutting of the paper P, printing on the paper P, transfer of the adhesive, and the like are controlled by a printer control unit 90 configured with a microcomputer.

  FIG. 14 is a block diagram illustrating a circuit configuration of the printer illustrated in FIGS. 1 and 2.

  Inside the printer 1 shown in FIGS. 1 and 2, a printer control unit 90 is provided as shown in FIG. A platen control circuit 94, a print head control circuit 95, a cutter control circuit 96, a transfer roller control circuit 97, and a conveyance roller control circuit 98 are connected to the printer control unit 90. The printer control unit 90 includes a CPU 91, a RAM 92, and a ROM 93. The ROM 93 includes a platen control program for controlling the platen control circuit 94, a print head control program for controlling the print head control circuit 95, a cutter control program for controlling the cutter control circuit 96, and a transfer roller control for controlling the transfer roller control circuit 97. Various programs such as a program and a conveyance roller control program for controlling the conveyance roller control circuit 98 are stored.

  The platen control circuit 94 is connected to a platen motor (not shown) that rotates the platen roller 221. The print head control circuit 95 is connected to the print head 222 shown in FIG. 4, and the cutter control circuit 96 is connected to the cutter unit 232 shown in FIG. The transfer roller control circuit 97 is connected to the solenoid 61 shown in FIG. The conveyance roller control circuit 98 is connected to a conveyance motor (not shown) housed in the casing 41 shown in FIG.

  The platen control circuit 94 drives the platen motor and rotates the platen motor according to the control of the CPU 91 based on the platen control program. When the platen motor rotates, the platen roller 221 also rotates, whereby the paper P is transported in the transport direction.

  The print head control circuit 95 causes the print head 222 to perform a printing operation on the other surface P2 of the paper P according to the control of the CPU 91 based on the print head control program. The print head 222 prints on the paper P in contact with the heat generating elements by selectively generating heat from the plurality of heat generating elements according to the control of the CPU 91.

  The cutter control circuit 96 drives the movable blade 2321 of the cutter unit 232 according to the control of the CPU 91 based on the cutter control program. When the movable blade 2321 is driven, the paper P is cut by the movable blade 2321 and the fixed blade 231.

  The transfer roller control circuit 97 drives the solenoid 61 according to the control of the CPU 91 based on the transfer roller control program, and shifts the state of the transfer roller 52 between the transfer state and the retracted state.

  The conveyance roller control circuit 98 drives a conveyance motor (not shown) according to the control of the CPU 91 based on the conveyance roller control program, and rotates the rotation shaft 43 of the conveyance motor shown in FIG. When the rotation shaft 43 of the transport motor rotates, the upstream transport roller 51, the downstream transport roller 54, and the transfer roller rotate in conjunction with each other, and the paper P is transported.

  Next, the operation of the main program performed by the printer control unit 90 shown in FIG. 14 will be described.

  The main program starts when the printer 1 is turned on. First, when the CPU 91 of the printer control unit 90 determines that a print command has been generated, it drives the platen motor to start the rotation of the platen roller 221 and prints on the other surface P2 of the paper P by the print head 222. Start. When the platen roller 221 rotates, the paper P is transported in the transport direction, and the curl is corrected by the decurling mechanism 21.

  The CPU 91 drives the transport motor before the transported paper P reaches the upstream transport roller 51, starts rotation of the upstream transport drive roller 51a, the downstream transport drive roller 54a, and the transfer roller, At this timing, the solenoid 61 is driven, and the state of the transfer roller 52 is shifted between the transfer state and the retracted state. Thus, the sheet P is discharged from the sheet discharge port 1a while the adhesive is transferred to a predetermined portion of the one surface P1 of the sheet P in the transfer unit W. Further, the CPU 91 stops the rotation of the platen roller 221 after the printing by the print head 222 is completed. Next, the CPU 91 drives the movable blade 2321 of the cutter unit 232. Thereby, the paper P is cut into a predetermined length. Here, the timing of cutting the paper P by the cutter mechanism 23 and the timing of transferring the adhesive in the transfer portion W are determined by the paper length of the paper P and the position of transferring the adhesive. For example, if the adhesive is transferred by the transfer unit W after the paper P is cut by the cutter mechanism 23, the trailing edge margin where the adhesive is not transferred can be reduced. When the adhesive is transferred only to the front end portion of the paper P, the paper P may be cut by the cutter mechanism 23 after the transfer of the adhesive at the transfer portion W is completed. In the printer 1 of the present embodiment, as shown in FIG. 4, the distance from the position where the movable blade 2321 of the cutter unit 232 reciprocates to the position where the upstream side transport roller 51 sandwiches the paper P, and the upstream side transport roller 51. The interval from the position where the paper P is sandwiched to the position where the paper P is sandwiched by the downstream conveying roller 54 is set to be substantially the same. Thereby, the minimum sheet length can be shortened.

  Next, a modification of the adhesive transfer unit 10 described so far will be described. In the following description of the modified example, the difference from the adhesive transfer unit 10 described so far will be mainly described, and the components having the same names as the names of the components described so far are denoted by the reference numerals used so far. The description will be omitted, and repeated description may be omitted.

  FIG. 15 is a diagram illustrating a first modification example in which the configuration of the peeling guide is different, and FIGS. 15A to 15C are diagrams corresponding to FIGS. 12A to 12C. .

  As shown in FIG. 15, the peeling guide 7 of the present modification has a downstream guide portion G1 and a parallel guide portion G2.

  As shown in FIG. 15A, when the transfer roller 52 is in the retracted state, the peeling guide 7 is urged by the spring 74, and the downstream guide portion G1 and the parallel guide portion G2 are moved to the other surface side. It is in the position advanced toward. The conveyed paper P is guided away from the transfer portion W when its one surface P1 is in contact with the downstream guide portion G1. Further, in the present modification, since the downstream side conveyance roller 54 shown in FIG. 12 is not provided, the conveyed paper P is in contact with the flat belt 53, and the flat belt 53 conveys the paper P. Is done more effectively.

  Next, when the solenoid 61 shown in FIG. 8 is driven and the transfer roller 52 shifts to the transfer state, the paper P is sandwiched between the transfer portion W and the transfer roller 52 as shown in FIG. As a result, the peeling guide 7 is pushed by the paper P and rotates clockwise as shown by the arc-shaped arrow in the figure against the urging force of the spring 74, and the downstream side guide portion G1 and the parallel guide portion G2 moves backward from the advanced position. This state is a transfer state, and when the paper P is conveyed in this transfer state, the adhesive is transferred to one surface P1 of the paper P in the transfer portion W, and the portion that has passed through the transfer portion W is on the downstream side. It is guided away from the transfer portion W by the guide portion G1. As a result, even when the transfer roller 52 is in the transfer state, the guide portion G contacts the downstream portion Y1 (see FIG. 13), so that the portion of the paper P that has passed through the transfer portion W in the transfer state. The transferred adhesive S1 and the untransferred adhesive S2 are easily separated.

  Next, by driving the solenoid 61 (see FIG. 8), the transfer roller 52 shifts from the transfer state to the retracted state, and the transfer roller 52 moves away from the transfer portion W as shown in FIG. When moved, the peeling guide 7 starts to rotate counterclockwise by the urging force of the spring 74, and the downstream guide portion G1 and the parallel guide portion G2 move forward toward the other surface side. As a result, the sheet P is pushed toward the other surface, and the transferred adhesive S1 and the untransferred adhesive S2 are separated.

  In the present modification, even in the transfer state shown in FIG. 15B, the conveyed paper P is guided away from the transfer portion W by the downstream guide portion G1. For this reason, when the transfer roller 52 shifts from the transfer state to the retracted state, the transferred adhesive S1 and the untransferred adhesive S2 can be more efficiently divided.

  FIG. 16 is a diagram illustrating second to fourth modified examples in which the configuration of the peeling guide 7 is different, and FIGS. 16A to 16C are diagrams corresponding to FIG.

  FIG. 16A is a view showing a second modified example, and the peeling guide 7 of the second modified example has a downstream guide portion G1 in contact with the downstream portion Y1 shown in FIG. FIG. 16B is a view showing a third modified example, and the peeling guide 7 of the third modified example has a parallel guide portion G2 in contact with the parallel portion Y2 shown in FIG. FIG. 16C is a diagram showing a fourth modified example, and the peeling guide 7 of the fourth modified example has an upstream guide portion G3 in contact with the upstream portion Y3 shown in FIG. .

  Like these 2nd-4th modification, the peeling guide 7 may have a guide part which touches any one of the downstream part Y1, the parallel part Y2, and the upstream part Y3. Moreover, the peeling guide 7 may have the guide part G which touches all the downstream part Y1, the parallel part Y2, and the upstream part Y3 like the said embodiment. Further, as in the first modification shown in FIG. 15, the peeling guide 7 may have a guide portion G that contacts two of the downstream portion Y1, the parallel portion Y2, and the upstream portion Y3. .

  The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope described in the claims. In addition, even if it is a structural requirement contained only in description of embodiment and each modification demonstrated above, you may apply the structural requirement to embodiment and another modification.

DESCRIPTION OF SYMBOLS 10 Adhesive transfer unit 1 Printer 21 Decal mechanism 3 Adhesive cartridge 51 Upstream conveyance roller 52 Transfer roller 53 Flat belt 54 Downstream conveyance roller 6 Transfer roller moving mechanism 7 Peeling guide G guide part G1 Downstream side guide part G2 Parallel guide part G3 Upstream guide part P1 One side P2 The other side S Adhesive T Adhesive tape W Transfer part

Claims (5)

A pair of transport rollers for transporting the paper in the thickness direction of the paper;
An adhesive tape coated with an adhesive is wound around, and a transfer section disposed on one side of the conveyed paper;
When the adhesive of the adhesive tape provided on the other surface side of the conveyed paper and wound around the transfer portion is transferred to the one surface, the paper is sandwiched between the transfer portion. A transfer roller,
At least one of the pair of transport rollers is a driving roller rotated by a driving member,
The pressure-sensitive adhesive transfer unit, wherein the transfer roller is rotated by the driving member.   2. The adhesive transfer unit according to claim 1, wherein the pair of transport rollers are arranged upstream of the transfer unit in the transport direction of the paper. A transmission mechanism for transmitting the driving force of the driving member from the pair of conveying rollers to the transfer roller;
The pressure-sensitive adhesive transfer unit according to claim 1, wherein the transmission mechanism is a belt connecting the driving roller and the transfer roller. The drive roller is fixed in position,
The transfer roller includes a transfer state in which the conveyed paper is sandwiched between the transfer portion and the adhesive of the adhesive tape wound around the transfer portion is transferred to the one surface, and is separated from the paper. The pressure-sensitive adhesive transfer unit according to any one of claims 1 to 3, wherein a state of the pressure-sensitive adhesive changes between a retracted state in which the pressure-sensitive adhesive is not transferred to the one surface. A printing mechanism for printing on the conveyed paper;
A printer comprising the adhesive transfer unit according to claim 1, wherein the adhesive is transferred to a sheet printed by the printing mechanism.