JPH10194532A - Card printer reversing and carrying mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a light and compact reversing part by providing a gear train which is connected to a drive source and rotationally drives a carrying roller, fitting a gear for roller on each of a pair of holding rollers of a reversing frame, and constantly engaging each gear for roller with a transmission gear. SOLUTION: A pair of first and second holding rollers 65 are provided across reversing shafts 63a, 63b to turnably support a reversing frame 62, and selectively turned by first and second transmission gears 71, 72. The first and second holding rollers 65 are provided with a gear 65a for the first and second rollers to be engaged with the first and second transmission gears 71, 72. A gear train 84 to be connected to a drive gear 83a of a carrying roller 83 and turned is provided. The reversing frame 62 is turned around the reversing shafts 63a, 63b, and when the first transmission gear 71 is engaged with a final gear 84b of the gear train 84, the first holding roller 65 is turned, and when the second transmission gear it engaged with the final gear 84b, the second holding roller is turned. A drive part for carrying a card need not be provided exclusively, and the light and compact reversing part can be provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a card printer reversing and transporting mechanism for reversing and transporting a card which has been printed on one side by thermal transfer in order to print on both sides of various cards such as a magnetic card.

[0002]

2. Description of the Related Art FIG. 6 is a front view of a conventional card printer reverse transport mechanism. A conventional card printer reversing and conveying mechanism 100 includes a U-shaped fixed frame 101, a reversing chassis 103 having reversing shafts 102 a and 102 b on the fixing frame 101, a reversing frame 104 attached to the reversing chassis 103, and a reversing chassis 104. A gear motor 105 fixed to 103; a conveying roller 108 connected to the gear motor 105 via a timing belt 107 and rotatably mounted on a reversing frame 104; and a driven roller 109 which rotates by nipping the card with the conveying roller 108. , Transport roller 108 and timing belt 111
And a transport roller 112 rotatably attached to the reversing frame 104 via the
2 and a driven roller 113 that sandwiches and rotates the card. The reversing shaft 102a has a reversing gear 114 connected to a reversing drive source for rotating the reversing chassis 103, the gear motor 105 and the transport roller 108 have a pulley 115 and a pulley 116 for connecting each, and the transport roller 108 And the transport roller 111 are provided with a pulley 118 and a pulley 119 for connecting them.

[0003]

However, the conventional card printer reversing and conveying mechanism 100 includes a gear motor 1 for driving the conveying rollers 108 and 112 in the reversing chassis 103.
05, the turning radius for inversion is large,
The card printer reverse transport mechanism 100 was large. Therefore, when the card printer reversing and transporting mechanism 100 is combined with a card printer and stored in one housing, there is a disadvantage that the entire apparatus becomes large. Also, since the gear motor 105 is provided in the reversing chassis 103,
The reversal part is heavy and the reversal drive means needs to be large, which increases the cost.

It is an object of the present invention to provide a compact card printer reversing and conveying mechanism in which the reversing portion is lightweight.

[0005]

In order to solve the above-mentioned problems, a first aspect of the present invention is to provide a base frame serving as a base, a transport roller and a driven roller rotatably provided on the base frame for transporting the card across the base frame. A reversing frame attached to the base frame so as to be capable of reversing the front and back of the card, reversing means for reversing the reversing frame,
A gear train provided on the base frame in connection with the drive source, and for rotating and driving the transport roller; first and second gears rotatably provided on the reversing frame for transporting the card in between;
A holding roller, first and second roller gears mounted on the ends of the first and second holding rollers, and a first gear rotatably provided on the reversing frame and always meshing with the first roller gear. The reverse transfer of the card printer was constituted by the first transmission gear and the second transmission gear which always meshed with the gear for the second roller.

When the reversal of the reversal frame toward the surface of the card is completed, the first transmission gear is meshed with the gear train to rotate the first clamping roller via the first roller gear, and to perform the first clamping. The second pinching roller is driven to rotate by the roller, and when the reversal frame is completely turned over toward the back side of the card, the second transmission gear meshes with the gear train and the second pinching is performed via the second roller gear. The roller is driven to rotate, and the first holding roller is driven to rotate by the second holding roller, so that the card in the reversing frame is conveyed. Therefore, there is no need to provide a dedicated drive unit for transporting the card in the reversing frame, so that the reversing part can be reduced in weight and the card printer reversing and transporting mechanism can be made compact.

According to a second aspect of the present invention, the gear train of the card printer reverse transport mechanism is connected to a drive source of the card printer. Since the gear train of the card printer reverse transport mechanism is connected to the drive source of the card printer, the card printer reverse transport mechanism does not require a transport drive source. Therefore, the card printer reverse transport mechanism can be manufactured at low cost.

[0008]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a plan view of a thermal transfer card printer having a card printer reversing and conveying mechanism according to the present invention. The thermal transfer printing apparatus 1 includes a rectangular chassis 2
And a card printer 3 provided in the chassis 2, a card hopper 4 for supplying a card to be printed by the card printer 3, and a card printed by the card printer 3 reversed and returned to the card printer 3, and the card conveyed again. Printer reversing and transporting mechanism 5 for transporting the paper to the downstream side without reversing
0, and a card stocker 5 for storing double-sided printed cards conveyed downstream from the card printer reversing and conveying mechanism 50.

The card printer 3 includes a card transport unit 6 for transporting a card from a card hopper 4 to a transfer position.
And a transfer film printing unit 7 provided on one side of the card transport unit 6, and a card transfer unit 9 for transferring the transfer film 8 printed by the transfer film printing unit 7 to a card. The card hopper 4 includes a card case 11 for storing cards, a gear motor 12 attached to one end of the card case 11, a card feed roller 14 connected to the gear motor 12 via a timing belt 13, and a card feeder 14. The card C includes a pair of cleaner rollers 15 for cleaning the front and back of the card C carried out by the rollers 14.

The card transport unit 6 includes a transport frame 18 extending longitudinally in the transport direction, a gear motor 19 as a drive source mounted on a side surface of the transport frame 18, and an intermediate portion connected to the gear motor 19 via a timing belt 21. There are a plurality of pulleys 22, a main transport roller 24 connected to the intermediate pulley 22 via a timing belt 23, and a plurality of secondary transport rollers 26 ... (...) connected to the main transport roller 24 via a timing belt 25. The same applies hereinafter.) And driven rollers 27 provided on the main transport roller 24 and the slave transport rollers 26.
Here, transport rollers 24, 26 and driven rollers 27 ...
The card C is sent to the card printer reversing and transporting mechanism 50 while holding the card C between them, and the reversed card C is returned to the card printer 3. The main transport roller 24
Are provided with pulleys 24a meshing with the timing belt 25, and the sub-conveying rollers 26 are provided with pulleys 26a meshing with the timing belt 25.

The transfer film printing unit 7 includes an ink ribbon 31, a thermal head 32 for transferring the ink of the ink ribbon 31 to the transfer film 8, and a driving unit 33 for operating a rotatable platen roller 33a. The ink ribbon 31 includes a supply reel 34 for supplying the ribbon and a take-up reel 35 for winding the ribbon.

The transfer film 8 includes a supply reel 37, a take-up reel 38, and a plurality of guide rollers 41a,.
b and 41b, which are routed from the supply side reel 37 to the take-up side reel 38 via the transfer film printing unit 5 and the card transfer unit 9. The card transfer unit 9 includes a transfer drive roller 47 connected to the intermediate pulley 22 of the card transport unit 6 via a timing belt 46.
And a heat roller 48 for sandwiching and transferring the card and the transfer film 5 together with the transfer drive roller 47, and a pressing unit 49 for pressing the heat roller 48. The pressing unit 49 heat-presses the transfer film 8 printed by the transfer film printing unit 7 to the card C by the heat roller 48.

FIG. 2 is a front view of the card printer reversing and conveying mechanism according to the present invention, as viewed in the direction of arrow 2 in FIG. The card printer reverse transport mechanism 50 includes a reverse unit 60 and a base unit 80. The reversing unit 60 includes a driving gear 61 as reversing means, a reversing frame 62 rotated by the driving gear 61, and a reversing frame 62.
Shafts 63a and 63b provided on both side surfaces for rotatably supporting the first and second pair of first and first shafts provided above and below the plane of FIG. 2 with the reverse shafts 63a and 63b interposed therebetween.
The second nipping rollers 65 and 66 (the second nipping rollers 66 below the paper surface are not shown), and are provided on the card transport line in a direction perpendicular to the axis of the first and second nipping rollers 65 and 66. Transport guide 67, a first card detection sensor 68 provided at each end of the transport guide 67 to detect the leading edge of the card, and a second card detection sensor 69 to detect the trailing edge of the card. The first and second transmission gears 71 and 72 provided for selectively rotating the first and second nipping rollers 65 and 66 according to the front and back sides of the first and second transmission gears 71 and 72, respectively.
Consists of

A driving gear 61 as a reversing means rotates while being connected to a driving source (not shown), and also drives a reversing gear 75 attached to a reversing shaft 63a via a timing belt 73 and an intermediate gear 74 to rotate the reversing frame. Card C on 62
Is turned upside down. Further, the drive gear 61 and the intermediate gear 74 include pulley portions 61a and 74a for connecting with the timing belt 73. The first and second nipping rollers 65 and 66 are provided with first and second transmission gears 71 and 72, respectively.
And gears 65a and 66a for the first and second rollers (the gear 66a for the second roller below the paper surface is not shown).

FIG. 3 is a sectional view taken along line 3-3 of FIG. The base unit 80 is connected to a base frame 81, a driven roller 82 and a conveyance roller 83 provided for nipping and conveying the card at the entrance side of the base frame 81, and a drive gear 83 a of the conveyance roller 83. It comprises a rotating gear train 84 and a discharge roller 85 connected to the transport roller 83. The transport roller 83 includes a connection gear 83b.
And is driven via the transmission gear 86 and the gear portion 47 a of the transfer drive roller 47. That is, it is connected to the gear motor 19 of the card printer 3 (see FIG. 1). The gear train 84 includes a first gear 84a rotated by the transport roller 83 and a last gear 84b connected to the first gear 84a. The discharge roller 85 includes a one-way pulley 85a, and is connected to a drive pulley 83c (see FIG. 2) of the transport roller 83 via a timing belt 87, and rotates only clockwise in the drawing. The one-way pulley 85 a
Is rotated in one direction so that the card stocker 5 (see FIG. 1) stores the card on which double-sided printing has been performed.

The above-described card printer reverse transport mechanism 5
The operation of 0 will now be described. FIGS. 4A to 4C are explanatory diagrams (first half) of the operation of the card printer reverse transport mechanism according to the present invention. (A) shows that the first transmission gear 71 is a gear train 84.
And the first holding roller 65 is in a driving state. Also, the second transmission gear 72
Does not mesh with the final gear 84b, the second nipping roller 66 is driven by the first nipping roller 65. The card C is transported to the card printer reversing transport mechanism 50 by the transport roller 83 and the driven roller 82, and the first and second nipping rollers 65 and 6.
6 and carried in as indicated by the arrow. here,
What is printed on the front surface of the card C is conveyed from the card printer 3 (see FIG. 1) with the front surface facing downward in the drawing.
(B) shows the card C printed on one side of the inverted frame 6;
2 indicates that the card C held between the first detection sensor 68 and the second detection sensor 69 and held by the first and second holding rollers 65 and 66 is stopped. (C)
In anticipation that the card C printed on the front side will move toward the second detection sensor 69 at the time of reversal, the first detection sensor 6
The card C is returned to the side 8 in advance by the first and second nipping rollers 65 and 66 as shown by arrows. As explained in the next figure, the first
By returning the card to the detection sensor 68 in advance, the card C can be rotated substantially at the center of the reversing frame 62, and the card C can be rotated with the minimum radius.

FIGS. 5A to 5C are explanatory diagrams (second half) of the operation of the card printer reverse transport mechanism according to the present invention.
(A) shows that the reversing frame 62 is connected to the reversing shafts 63a and 63b.
(See FIG. 2), the final gear 84b of the gear train 84 is stopped when the first transmission gear 71 is rotated, as shown by an arrow, like a planetary gear. Due to the rotation, the first nipping roller 65 rotates as shown by the arrow. As a result, the card C moves to the second detection sensor 69 side and falls within the range between the first detection sensor 68 and the second detection sensor 69. (B) shows a state immediately before the inversion of the inverted frame 62 is completed. Here, the first transmission gear 71 moves away from the final gear 84b, while the second transmission gear approaches the final gear 84b. (C) shows a state where the second transmission gear 72 has meshed with the final gear 84b of the gear train 84. Since the final gear 84b of the gear train 84 is stopped in the same manner as in (a), the second transmission gear 72 rotates as shown by an arrow like a planetary gear with respect to the final gear 84b. Rotate like an arrow,
The card C moves to the first detection sensor 68 side and ends the inversion. Here, the surface of the card C faces upward in the drawing.

Thereafter, by reversing the rotation of the final gear 84b, the card C inverted by the first and second nipping rollers 665, 66 is returned to the heat roller 48 side, and the card printer 3 (see FIG. 1). To print on the back of the card C. The double-sided printed card is conveyed to the reversing frame 62 again. In this case, it is not necessary to reverse the card and return it to the card printer 3 (see FIG. 1). (Figure 1
(See Reference). After the double-sided printed card passes, the reversing frame 62 is rotated to return to the initial state shown in FIG.

[0019]

According to the present invention, the following effects are exhibited by the above configuration. In order to solve the above-mentioned problems, a first aspect of the present invention is to reverse a front and back of a card, a base frame serving as a base, a conveying roller and a driven roller rotatably provided on the base frame to convey the card by sandwiching the card. A reversing frame mounted on the base frame so as to be reversible, a reversing means for reversing the reversing frame, a gear train provided on the base frame in connection with a drive source, and rotating the transport roller, and sandwiching the card. First and second nipping rollers rotatably provided on the reversing frame for transporting the first and second nipping rollers, and first and second roller gears attached to the ends of the first and second nipping rollers; A first transmission gear rotatably provided and constantly meshing with the first roller gear and a second transmission gear constantly meshing with the second roller gear constitute a reverse transfer of the card printer. It was.

When the reversal of the reversing frame toward the surface of the card is completed, the first transmission gear is meshed with the gear train to rotate the first clamping roller via the first roller gear, and the first clamping is performed. The second pinching roller is driven to rotate by the roller, and when the reversal frame is completely turned over toward the back side of the card, the second transmission gear meshes with the gear train and the second pinching is performed via the second roller gear. The rollers are driven to rotate, and the first holding roller is freely rotated by the second holding roller, so that the card in the reversing frame is transported. Therefore, there is no need to provide a dedicated drive unit for transporting the card in the reversing frame, so that the reversing part can be reduced in weight and the card printer reversing and transporting mechanism can be made compact.

According to a second aspect of the present invention, the gear train of the card printer reverse transport mechanism is connected to a drive source of the card printer. Since the gear train of the card printer reverse transport mechanism is connected to the drive source of the card printer, the card printer reverse transport mechanism does not require a transport drive source. Therefore, the card printer reverse transport mechanism can be manufactured at low cost.

[Brief description of the drawings]

FIG. 1 is a plan view of a thermal transfer card printer including a card printer reversing and conveying mechanism according to the present invention.

FIG. 2 is a view taken in the direction of arrow 2 in FIG. 1;

FIG. 3 is a sectional view taken along line 3-3 in FIG. 2;

FIG. 4 is an explanatory view of the operation of the card printer reverse transport mechanism according to the present invention (first half).

FIG. 5 is an explanatory view of the operation of the card printer reverse transport mechanism according to the present invention (second half).

FIG. 6 is a front view of a conventional card printer reverse transport mechanism.

[Explanation of symbols]

3: Card printer, 19: Drive source (gear motor), 5
0: card printer reversing / conveying mechanism, 61: reversing means (drive gear), 62: reversing frame, 65, 66: first and second nipping rollers, 65a, 66a: first and second roller gears, 71, 72 .., First and second transmission gears, 81... Base frame, 82... Driven rollers, 83.
Gear train, C ... card.

Claims (2)

[Claims] 1. A base frame serving as a base, a transport roller and a driven roller rotatably provided on the base frame for transporting the card therebetween, and a base frame for reversing the front and back of the card. A reversing frame mounted to be reversible, reversing means for reversing the reversing frame, a gear train provided on the base frame in connection with a drive source, and rotating the transport roller, and the card interposed therebetween. First and second nipping rollers rotatably provided on the reversing frame for transport, first and second roller gears attached to ends of the first and second nipping rollers, and the reversing frame A first transmission gear, which is rotatably provided, and a second transmission gear, which constantly meshes with the first roller gear, and a second transmission gear, which constantly meshes with the second roller gear, When the reversal frame is completely reversed in the direction of the surface of the card, the first transmission gear is meshed with the gear train to rotate and drive the first nipping roller via the first roller gear, and The second clamping roller is driven to rotate by the first clamping roller. On the other hand, when the reversal of the reversing frame in the direction of the back of the card is completed, the second transmission gear is meshed with the gear train to form the second A reverse transfer mechanism for a card printer, wherein the second holding roller is driven to rotate via a roller gear, and the first holding roller is driven to rotate by the second holding roller. 2. The reverse transfer mechanism of a card printer according to claim 1, wherein said gear train is connected to a drive source of a card printer.