JP2013184767A - Sheet-fed type printer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To apply double-sided printing to a base material, by easily reversing the singled sheet base material.SOLUTION: A sheet-fed type printer 10 for applying printing to both surfaces of a singled sheet base material, includes a thermal head 12 for applying printing to both surfaces 1a and 1b of the bare material 1, a base material supply part 25 for storing and supplying the base materials 1, and a base material carrying passage 15 carrying the base material 1 from the base material supply part 25 to the thermal head 12 side and having one side base material carrying passage 15a existing on one side of the thermal head 12 and the other side base material carrying passage 15b existing on the other side of the thermal head 12. The one side base material carrying passage 15a is connected with a reversing mechanism 20 for reversing the base material 1 by only making the base material 1 travel in one direction, and this reversing mechanism 20 has a loop-shaped reversing carrying passage 20a.

Description

  The present invention relates to a sheet-fed printer that prints on a sheet-fed substrate by heat generation of a thermal head, and more particularly to a sheet-fed printer that can perform double-sided printing on a sheet-fed substrate.

  Conventionally, as a printer that performs double-sided printing, the base material is transported from roll paper obtained by winding a base material having a receiving layer on both sides, and the dye or pigment is transferred to the base material through heating of the thermal head. Sublimation type printers are known.

  In such a sublimation printer, the roll paper obtained by winding the base material is held by a holding unit, and by rotating the holding unit, the direction of the base material fed from the roll paper is reversed with respect to the base material. Double-sided printing is applied. The printed substrate is then cut to obtain a printed sheet substrate.

JP 2011-93255 A

  By the way, as described above, a technology for performing double-sided printing on a base material while supplying the base material from a roll paper obtained by winding the base material has been developed, but a single-wafer base material cut in advance into a single-wafer type is prepared. In addition, it is desired to use a printer that performs double-sided printing on the substrate while inverting the sheet substrate.

  In particular, the actual situation is that a single-sided substrate can be easily and surely reversed to perform double-sided printing on the sheet-fed substrate, and a printer having a compact structure as a whole has not been developed yet.

  The present invention has been made in consideration of such points, and a sheet-fed printer that can easily reverse a sheet-fed substrate and print on both sides of the sheet-fed substrate and has a compact structure as a whole. The purpose is to provide.

  The present invention relates to a sheet-fed printer in which a sheet-fed substrate is conveyed and printed on both sides of the sheet-fed substrate by a printing unit, a printing unit that prints on both sides of the sheet-fed substrate, and a substrate supply that stores and supplies the sheet-fed substrate And a base material transport path for transporting the sheet-fed base material supplied from the base material supply section to the printing section, and the base material transport path is located on one side of the printing section, and the printing section The other side substrate conveyance path located on the other side, while the sheet substrate is traveling in one direction on the one side substrate conveyance path, and the other side is the printing unit with the one side facing the printing unit The sheet-fed printer is provided with a reversing mechanism for reversing the head.

  In the present invention, the printer is a sublimation type printer, and the printing unit is a thermal head that performs printing on a sheet substrate.

  The present invention is a sheet-fed printer in which the reversing mechanism has a loop-shaped reversing conveyance path including an inlet and an outlet.

  The present invention is a sheet-fed printer in which a printing unit, a substrate supply unit, and a substrate conveyance path are arranged along the outer periphery of a loop-shaped reversal conveyance path.

  The present invention is a sheet-fed printer characterized in that a substrate discharge unit that discharges a printed sheet substrate is provided, and the substrate discharge unit is disposed on the outer periphery of the loop-shaped reversal conveyance path.

  In the present invention, a base material cutting part for removing the margin at the front end and the rear end of the printed sheet substrate is provided in the vicinity of the base material discharge part, and the base material cutting part is provided on the outer periphery of the loop-shaped reverse conveyance path. A sheet-fed printer characterized by being arranged.

  In the present invention, the loop-shaped reversal conveyance path has an end portion having functions of an inlet and an outlet, and is connected to one side substrate conveyance path of the reversing mechanism via the end portion. It is a leaf type printer.

  As described above, according to the present invention, the sheet substrate can be easily and reliably reversed only by running the sheet substrate in one direction, and double-sided printing can be reliably performed on the sheet substrate.

FIG. 1 is a schematic side view showing an embodiment of a sheet-fed printer according to the present invention. FIG. 2 is a detailed view showing a reversing mechanism of the sheet-fed printer. FIG. 3 is an operation explanatory view showing the operation of the sheet-fed printer. FIG. 4 is an operation explanatory diagram illustrating the operation of the sheet-fed printer. FIG. 5 is an operation explanatory view showing the operation of the sheet-fed printer. FIG. 6 is an operation explanatory diagram illustrating the operation of the sheet-fed printer. FIG. 7 is an operation explanatory diagram illustrating the operation of the sheet-fed printer. FIG. 8 is an operation explanatory view showing the operation of the sheet-fed printer. FIG. 9 is an operation explanatory diagram illustrating the operation of the sheet-fed printer. FIG. 10 is an operation explanatory diagram illustrating the operation of the sheet-fed printer. FIG. 11 is an operation explanatory diagram illustrating the operation of the sheet-fed printer. FIG. 12 is an operation explanatory diagram illustrating the operation of the sheet-fed printer. FIG. 13 is an operation explanatory diagram illustrating the operation of the sheet-fed printer. FIG. 14 is an operation explanatory diagram illustrating the operation of the sheet-fed printer. FIG. 15 is an operation explanatory diagram illustrating the operation of the sheet-fed printer. FIG. 16 is an operation explanatory diagram illustrating the operation of the sheet-fed printer. FIG. 17 is an operation explanatory diagram illustrating the operation of the sheet-fed printer.

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

  1 to 17 are views showing an embodiment of a sheet-fed printer according to the present invention.

  1 is a schematic side view showing a sheet-fed printer, FIG. 2 is a diagram showing a reversing mechanism of the sheet-fed printer, and FIGS. 3 to 17 are operation diagrams of the sheet-fed printer.

  As shown in FIGS. 1 and 2, the sheet-fed printer 10 conveys a sheet-fed substrate 1 having a receiving layer on both sides, and a sheet-fed substrate (hereinafter also referred to as a substrate) 1 is formed by a printing unit including a thermal head 12. On the other hand, it performs double-sided printing and consists of a sublimation printer.

  Such a sheet-fed printer 10 stores a printing unit including a thermal head 12 that performs printing on both surfaces of a sheet-fed substrate (substrate) 1 and a substrate 1, and supplies the substrate 1. The material supply part 25 and the base material conveyance path 15 which conveys the base material 1 supplied from the base material supply part 25 to the thermal head 12 side are provided.

  Among these, the base material transport path 15 includes a one-side base material transport path 15 a located on one side of the thermal head 12 and an other-side base material transport path 15 b located on the other side of the thermal head 12. A platen roller 13 that holds the substrate 1 is provided at a position facing the thermal head 12 with the substrate 1 interposed therebetween.

  Further, while the base material 1 travels in one direction on the one-side base material transport path 15a of the base material transport path 15, the one surface 1a faces the thermal head 12, and the other surface 1b faces the thermal head 12. A reversing mechanism 20 for reversing is connected. The reversing mechanism 20 includes a loop-shaped reversing conveyance path 20a, and the loop-shaped reversing conveying path 20a is connected to the one-side base material conveying path 15a via an end 21.

  In this case, the end portion 21 of the loop-shaped reverse conveyance path 20a has a function as an inlet and an outlet of the loop-shaped reverse conveyance path 20a.

  A conveying roller 23 for conveying the substrate 1 is provided in the loop-shaped reversal conveying path 20a.

  Furthermore, a guide conveyance path 24 that guides the base material 1 supplied from the substrate supply section 25 to the loop-shaped reversal conveyance path 20a is installed between the substrate supply section 25 and the loop-shaped reversal conveyance path 20a. Has been.

  Further, a pickup lever 25a that lifts the substrate 1 placed on the lifting plate 25b in the substrate supply unit 25 upward is provided below the substrate supply unit 25, and is lifted by the pickup lever 25a. Of the base materials 1, the uppermost base material 1 is sent to the guide conveyance path 24 side by the pickup roller 26.

  That is, a separation roller 27 and a paper feed roller 28 are provided on the entrance side of the guide conveyance path 24, and the uppermost substrate 1 among the substrates 1 lifted by the pickup lever 25 a is separated from the separation roller 27 by the pickup roller 26. It is sent to the paper feed roller 28 side. At this time, the base material 1 below the uppermost base material 1 may be sent together with the uppermost base material 1 to the separation roller 27 and the feed roller 28 side. Since the lower substrate 1 is in contact with the separation roller 27, it is not sent to the guide conveyance path 24 side.

  In addition, the one side base material transport path 15a of the base material transport path 15 is provided with transport rollers 16 and 17 in order from the loop-shaped reverse transport path 20a side.

  Further, a discharge roller 18 is provided on the outlet side of the other-side base material conveyance path 15b, and a cutter 19 is provided on the further outlet side of the discharge roller 18.

  The cutter 19 removes the margin at the front end portion and the margin at the rear end portion of the printed base material 1, and a movable blade 19a for cutting the base material 1 between the fixed blade 19b and the fixed blade 19b. It is made up of.

  Furthermore, a sublimation transfer ribbon 5 for performing sublimation transfer is supplied from a ribbon unwinding unit 6 to a thermal head 12 serving as a printing unit. The ribbon 5 supplied from the ribbon unwinding unit 6 is used when performing sublimation transfer printing in the thermal head 12, and then the used ribbon 5 is wound on the ribbon winding unit 7.

  By the way, the loop-shaped reversal conveyance path 20a of the sheet-fed printer 10 has a circular outer shape as a whole, and has a thermal head 12, a one-side substrate conveyance path 15a, and another substrate conveyance path 15b. 15, the base material supply unit 25, the discharge roller 18, and the cutter 19 are disposed along the outer periphery of the loop-shaped reverse conveyance path 20a.

  Furthermore, the above-described components such as the thermal head 12, the ribbon unwinding unit 6, the ribbon winding unit 7, the transport rollers 16, 17, the discharge roller 18, the cutter 19, the pickup lever 25a, the pickup roller 26, the separation roller 27, the supply roller All the paper rollers 28 are driven and controlled in synchronization by the control device 11, and all of these components and the control device 11 are housed in the housing 10A.

  Next, the operation of the present embodiment having such a configuration will be described with reference to FIGS.

  First, as shown in FIG. 3, a large number of base materials 1 are stacked in the base material supply unit 25.

  From this state, the pickup lever 25a lifts the elevating plate 25b in the base material supply unit 25. At this time, the base material 1 placed on the lifting plate 25b is also lifted in the same manner.

  Thereafter, the uppermost base material 1 among the base materials 1 placed on the elevating plate 25 b is sent to the separation roller 27 and the paper feed roller 28 side by the pickup roller 26.

  At this time, the conveyance roller 23 in the loop-shaped reverse conveyance path 20a rotates in synchronization with the pickup roller 26, the separation roller 27, and the paper feed roller 28.

  Next, as shown in FIG. 4, the base material 1 sent to the separation roller 27 and the paper feed roller 28 side by the pickup roller 26 is then sent to the looped reverse conveyance path 20 a side through the guide conveyance path 24. . At this time, it is conceivable that the lower substrate 1 other than the uppermost substrate 1 among the substrates 1 in the substrate supply unit 25 is also sent to the separation roller 27 and the paper feed roller 28 side. Since the lower substrate 1 other than the substrate 1 is in contact with the separation roller 27, only the uppermost substrate 1 is sent from the guide conveyance path 24 side to the loop-shaped reverse conveyance path 20a side.

  At this time, the substrate 1 is detected by a detection sensor (not shown) provided in the guide conveyance path 24, and at the same time, the pickup lever 25a is lowered, and accordingly, the lifting plate 25b in the substrate supply unit 25 is lowered. And the base material 1 on the lifting plate 25b is also lowered (see FIG. 5).

  Next, the base material 1 in the loop-shaped reverse transport path 20a is sent to the base material transport path 15 side by the transport rollers 16 and 17.

  Thereafter, as shown in FIG. 6, the base material 1 is sent from the base material conveyance path 15 to the discharge roller 18 side.

  Further, the pickup roller 26, the separation roller 27, and the paper feed roller 28 all stop.

  Next, as shown in FIG. 7, printing by sublimation transfer is performed on one surface of the substrate 1 by the thermal head 12.

  During this time, the base material 1 discharged to the outside of the discharge roller 18 is transported in the reverse direction to the base material transport path 15 side by the discharge roller 18, and the base material 1 is transferred to the base material transport path 15 by the transport rollers 16 and 17. It goes to the one side base material conveyance path 15a side from the other side base material conveyance path 15b. Further, a ribbon 5 for sublimation transfer is supplied from the ribbon unwinding section 6 to the thermal head 12 side, and the dye or pigment on the ribbon 5 side is transferred to one surface 1 a of the substrate 1 by the heat from the thermal head 12. Can do.

  The sublimation transfer ribbon 5 has Y (yellow), M (magenta), C (cyan), and OP (overcoat) regions, and Y printing is first performed by the Y region of the ribbon 5.

  In this way, in the thermal head 12, Y printing is performed on one surface 1 a of the substrate 1 by the sublimation transfer ribbon 5. The printed base material 1 on which Y printing has been performed is sent to the one-side base material transport path 15a of the base material transport path 15, and then the base material 1 is reversed in a loop from an end portion 21 having an entrance and an exit function. Enter into the conveyance path 20a.

  Next, as shown in FIG. 8, the base material 1 in the loop-shaped inversion transport path 20 a is sent again from the one side base material transport path 15 a to the other side base material transport path 15 b side. Thereafter, in the same manner as described above, in the thermal head 12, M printing and C printing are sequentially performed on one surface 1 a of the substrate 1 using the sublimation transfer ribbon 5, and then, on one surface 1 a of the substrate 1. An overcoat layer is formed (see FIG. 9).

  In this way, the thermal head 12 performs printing by sublimation transfer on the one surface 1a of the substrate 1, and the printing on the one surface 1a of the substrate 1 is completed.

  Thereafter, as shown in FIG. 10, the reversing operation of the substrate 1 is performed in the loop-shaped reversing conveyance path 20a.

  That is, the base material 1 printed on one surface is fed into the loop-shaped reverse conveyance path 20a and travels in one direction by the conveyance roller 23 in the loop-shaped reverse conveyance path 20a (see FIG. 10). .

  At this time, the separation roller 27, the paper feed roller 28, and the discharge roller 18 also rotate in synchronization with the transport roller 23.

  In the loop-shaped reverse conveyance path 20a, the base material 1 traveling in one direction is reversed in direction while traveling in the loop-shaped reverse conveyance path 20a, and one surface faces the thermal head 12 side. Thus, the other surface 1b of the substrate 1 is changed to the state facing the thermal head 12 side.

  As shown in FIG. 11, the base material 1 whose direction is reversed while traveling in one direction in the loop-shaped reversal transport path 20 a passes through the rear end portion 21, and the one-side base material transport path 15 a of the base material transport path 15. Get inside.

  Thereafter, as shown in FIG. 12, the base material 1 is sent from the other side base material transport path 15 b of the base material transport path 15 to the discharge roller 18 side. In this way, the reversing operation of the substrate 1 is completed.

  Thereafter, as shown in FIG. 13, Y printing is first performed on the other surface 1 b of the substrate 1 using the sublimation transfer ribbon 5 by the thermal head 12 in the same manner as described above.

  Thereafter, as shown in FIG. 14, M printing and C printing are sequentially performed on the other surface 1 b of the substrate 1 using the sublimation transfer ribbon 5, and thereafter, the other surface 1 b of the substrate 1 is applied to the other surface 1 b. An overcoat layer is formed, and printing on the other surface 1b of the substrate 1 is thus completed.

  Next, as shown in FIG. 15, the base material 1 on which both sides 1 a and 1 b have been printed is sent from the other side base material transport path 15 b to the discharge roller 18 side. Next, the blank space at the front end portion of the substrate 1 that is not printed is removed by the cutter 19.

  Further, the substrate 1 is discharged outward by the discharge roller 18 (see FIG. 16), and then the margin at the rear end of the substrate 1 is removed by the cutter 19 (see FIG. 17).

  In this way, the substrate 1 on which printing is performed on both the one surface 1a and the other surface 1b, the margin at the front end and the margin at the rear end are removed, and the entire surface is printed is removed by the discharge roller 18. It is discharged to the direction and taken out as a product.

  As described above, according to the present embodiment, the orientation of the base material 1 can be easily and reliably reversed simply by causing the single-wafer base material 1 to travel in one direction in the loop-shaped reversal conveyance path 20a of the reversing mechanism 20. The sublimation transfer printing can be easily performed by the thermal head 12 on both sides 1a and 1b of the substrate 1 reversed in this way.

  Further, the loop-shaped reverse conveyance path 20a has a circular outer shape as a whole, and the thermal head 12, the base material conveyance path 15, the base material supply unit 25, the discharge roller 18 and the cutter 19 are each along the outer periphery of the loop-shaped reverse conveyance path 20a. Therefore, the overall shape of the sheet-fed printer 10 can be made compact. Thus, since the sheet-fed printer 10 has a compact configuration as a whole, even if the base material 1 is clogged, it is easy to place the base material 1 inside the housing 10A by opening the housing 10A. You can check it out.

DESCRIPTION OF SYMBOLS 1 Sheet-fed base material 1a One side 1b The other side 5 Sublimation transfer ribbon 6 Ribbon unwinding part 7 Ribbon winding part 10 Sheet-fed printer 10A Housing | casing 11 Control apparatus 12 Thermal head 13 Platen roller 15 Base material conveyance path 15a One Side base material transport path 15b Other side base material transport path 16 Transport roller 17 Transport roller 18 Discharge roller 19 Cutter 20 Reverse mechanism 20a Loop-shaped reverse transport path 21 End 23 Transport roller 24 Guide transport path 25 Base material supply section 25a Pickup lever 26 Pickup roller 27 Separation roller 28 Paper feed roller

Claims (7)

In a sheet-fed printer that conveys a sheet substrate and prints on both sides of the sheet substrate by a printing unit,
A printing section that prints on both sides of the sheet substrate;
A base material supply unit for storing and supplying single-wafer base materials;
A substrate transport path for transporting the sheet substrate supplied from the substrate supply unit to the printing unit,
The substrate conveyance path has a one-side substrate conveyance path located on one side of the printing unit and an other-side substrate conveyance path located on the other side of the printing unit, and a single-wafer substrate is disposed on the one-side substrate conveyance path. A sheet-fed printer, comprising a reversing mechanism for reversing a sheet substrate whose one side faces the printing unit while traveling in one direction so that the other side faces the printing unit.   2. A sheet-fed printer according to claim 1, wherein the printer is a sublimation type printer, and the printing unit comprises a thermal head for printing on a sheet-fed substrate.   3. The sheet-fed printer according to claim 1, wherein the reversing mechanism has a loop-shaped reversing conveyance path including an inlet and an outlet.   The sheet-fed printer according to claim 3, wherein the printing unit, the substrate supply unit, and the substrate conveyance path are arranged along the outer periphery of the loop-shaped reversal conveyance path. A base material discharge part for discharging the printed sheet substrate is provided,
4. The sheet-fed printer according to claim 3, wherein the base material discharge section is disposed on the outer periphery of the loop-shaped reversal conveyance path. A base material cutting part is provided in the vicinity of the base material discharge part to remove the margin at the leading end and the trailing end of the printed sheet substrate,
4. The sheet-fed printer according to claim 3, wherein the base material cutting part is disposed on the outer periphery of the loop-shaped reversal conveyance path.   The loop-shaped reversal conveyance path has ends having functions of an inlet and an outlet, and is connected to one side base material conveyance path of the reversing mechanism via the ends. Sheet-fed printer.

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