JPH0725094A - Printing device - Google Patents

Abstract

PURPOSE:To prevent a misregistration from occurring by chattering, to maintain good printing quality and to perform stable treatment without conveyance error by suitably performing changeover of pinch pressure in a time for conveyance and in a time for printing. CONSTITUTION:When a thermal head 33 is press-touched on a page 2A to be printed and becomes a printing mode, a cam 71 is interlocked with the cam of a head transfer mechanism 37 and rotated and a movable member 65 is moved. Thereby a pinch spring 66 for energizing the pinch roller 12 of a second conveyance mechanism 13 becomes a loose state. The energizing force-imparting part 64A of a supporting arm 64 which supports the pinch roller 15 of a third conveyance mechanism 16 is pushed by the pawl member 65A of the movable member 65. A pinch roll 15 is separated from a conveyance roller 14. Thereby the cover 2B of a passbook 2 is conveyed by pinch pressure reduced to the proper value. Suitable tension is given to the page 2A to be printed which is wound on a platen roller 31.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printer device for printing information on a booklet printing medium such as a passbook.

[0002]

2. Description of the Related Art In recent years, a color thermal printer has been put into practical use which prints information such as transaction contents on a booklet printing medium (hereinafter referred to as a passbook) using a transfer film having ink (hereinafter referred to as an ink ribbon). Have been used for.

Usually, in this type of printer,
The page to be printed of the passbook is wound around the platen roller, and the thermal head is pressed against it through the ink ribbon. Then, the thermal head sequentially applies heat to the print patterns in accordance with the print feeding operation of the platen roller, thereby performing printing.

[0004]

In the printer, a plurality of conveying roller pairs each including a conveying roller and a pinch roller are arranged as means for conveying the passbook inside.
Pressure (hereinafter, pinch pressure) is applied to these pinch rollers in order to give a sufficient conveyance force to the passbook.

On the other hand, during the printing operation, the page to be printed is in close contact with the platen roller, and an appropriate tension is applied so that the printing point does not shift even by the overlay printing operation for color printing. It is necessary to give it to the page wrapped around.

However, in the conventional device, a constant pinch pressure is always applied to the pinch roller. Therefore, if the conveying means described above is used as a means for applying tension to the printed page to be printed, the pinch pressure is too high and the tension becomes too high, and the driving section and the page to be printed are subject to chattering and the like. However, there have been problems such as the occurrence of the above phenomenon and the deterioration of the overlay accuracy.

The present invention has been made in view of the above circumstances. An object of the present invention is to appropriately switch pinch pressures during conveyance and during printing, and it is possible to prevent misalignment due to chattering. (EN) Provided is a printer device which can maintain print quality and can perform stable processing without a transport error.

[0008]

As a means for solving the problems, the present invention is a means for arranging a plurality of conveying roller pairs for holding an open booklet printing medium and conveying it with rotation. A page turning means for turning up a page to be printed of a print medium conveyed by the conveying means, and a page to be printed rolled up by the page turning means on a printing surface while feeding against the conveying force of the conveying means. A printing means for printing and a carrying force switching means for reducing the carrying force of the carrying roller pair located on the downstream side of the page turning means of the carrying means while printing on the printing surface of a predetermined page by the printing means. It is configured as provided.

[0009]

According to the printer device of the above-mentioned means, while the printing force is being printed on the printing surface of the page to be printed by the feeding force switching means, the pair of feeding rollers located downstream of the page turning means of the feeding means. Since the transporting force of the printer is reduced, the pinch pressure can be switched appropriately between transporting and printing, and the phenomenon such as chattering due to the strong tension applied to the printed page to be printed can be prevented. It is possible to maintain good print quality without misregistration, etc., and to perform stable processing without transport errors.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS.
Will be described in detail with reference to. FIG. 1 shows the configuration of a printer device. In FIG. 1, reference numeral 1 denotes an apparatus main body, and a passbook insertion / removal slot for inserting and removing a passbook 2 which is a booklet-like print medium on the front surface (left side in the drawing) of the apparatus main body 1. 3 is formed.

In the main body 1 of the apparatus, there is formed a conveying path 4 for taking in and conveying the passbook 2 inserted from the passbook insertion / removal opening 3. Along the transport path 4, the first, second, and third lower guide plates 5
A, 5B, 5C are provided, and the passbook insertion / extraction opening 3
An upper guide plate 5D is disposed so as to face the first lower guide plate 5A located at.

Further, in the vicinity of the passbook insertion / extraction opening 3 in the main body 1 of the apparatus, that is, on the upstream side of the transport path 4, the light emitting element 6A and the light receiving element 6B located above and below the transport path 4 are provided. Passbook detector 6 for detecting insertion and removal of
Is provided.

On the upstream side of the transport path 4, there is a transport mechanism 10 as a first transport means including a transport roller 7 and a pinch roller 8 which are a pair of transport rollers. A pair of conveyance roller 11 and pinch roller 1
The transport mechanism 13 as the second transport means including
Further, at the downstream portion of the transport path 4, a transport mechanism 16 as a third transport means including a transport roller 14 which is a transport roller pair and a pinch roller 15 is disposed.

The upper pinch rollers 8, 12, 15 are
The lower transport rollers 7, 11, 14 are in rolling contact with each other, and the lower transport rollers 7, 11, 14 are rotationally driven by a driving unit (not shown).

When the passbook 2 is inserted into the passbook insertion / removal opening 3 so that the printed page 2A to be printed is exposed, and the front cover 2B side is the front end side and the back cover 2C side is the rear end side. A signal from the passbook detector 6 drives the transport rollers 7, 11, 14 of the transport mechanisms 10, 13, 16 for a predetermined time, whereby the passbook 2 has a second transport mechanism 13 and a third transport mechanism on the front cover 2B side. It is designed to be taken up to a position where it is held by the transport mechanism 16.

At this time, the back cover 2C side of the passbook 2 is located away from the first transport mechanism 10 and is supported by the second lower guide plate 5B. Further, between the first transport mechanism 10 and the second transport mechanism 13 and on the upper surface side of the transport path 4, the uppermost portion on the back cover 2C side supported by the second lower guide plate 5B. A page-turning mechanism 20 is provided as a page-turning means for turning-up a printed page 2A which is superposed on and printed.

Further, a thermal recording device 21 as a printing means for printing on the printing surface while feeding the page to be printed 2A is provided in the page-up direction by the page-turning mechanism 20. The page turning mechanism 20, as shown in FIGS. 2 and 3,
It has a turning roller 25 and an arm 26 which holds the turning roller 25 at the tip and is rotatable to bring the turning roller 25 into and out of contact with the printed page 2A. The arm 26 holds the rolled up printed page 2A. A guide plate 27 for guiding is attached.

The thermal recording device 21 has a platen roller 31 provided with a clamper 30 and a thermal head 33 as a print head which comes into pressure contact with a printed page 2A supported by the platen roller 31 via an ink ribbon 32.

The ink ribbon 32 is a ribbon cassette 34.
The ribbon cassette 34 can be exchanged together. The thermal head 33 is held by a support arm 36 which uses a support shaft 35 as a pivotal fulcrum and is always urged in a clockwise direction by urging means (not shown). The head moving mechanism 37 moves the thermal head 33 to the platen roller 31. It is possible to approach and separate from.

The head moving mechanism 37 comprises a cam follower 38 provided on the support arm 36, a cam 39 rollingly contacting the cam follower 38, and a cam drive mechanism (not shown) for driving the cam 39. By rotating the cam 39, the thermal head 33 can obtain both a “print mode” state in which it is pressed against the platen roller 31 and a “retract mode” state in which it is separated from the platen roller 31.

FIG. 1 shows a printed page 2 by a page turning mechanism 20.
A shows a process in which A is rolled up, and the clamper 30 of the platen roller 31 is open. And printed page 2
When A is completely rolled up, the transport rollers 11 and 14 of the second transport mechanism 13 and the third transport mechanism 16 rotate in reverse, and the leading edge of the printed page 2A enters under the clamper 30. Then, when the platen roller 31 rotates, the platen roller 31 is closed by the clamper opening / closing member 50 provided near the platen roller 31, and the leading end of the printed page 2A is held.

FIG. 2 shows a printing start state on the printed page 2A, in which the thermal head 33 is pressed against the platen roller 31 side by the head moving mechanism 37. And
As the platen roller 31 rotates, the printed page 2A is indicated by an arrow A.
The thermal head 33 sequentially applies heat to the print patterns in accordance with the print feeding operation of the platen roller, thereby performing printing.

On the other hand, while the thermal recording device 21 is printing on the printing surface of the printed page 2A, the cover 2B side is conveyed in the direction of arrow B to apply tension to the printed page 2A. By a pinch roller pressing force switching mechanism 60 as a conveying force switching means, which will be described later, the conveying force in the direction of arrow B, that is, the tension force is reduced, and chattering or the like due to the strong tension applied to the printed page 2A to be printed. The phenomenon is prevented, and good print quality without misalignment due to chattering can be maintained.

FIG. 3 shows a printing completed state on the printed page 2A. Also, during this printing operation, the second lower guide plate 5
The support arm 55 that supports B is in a state of being rotated counterclockwise with the support shaft 56 as a rotation fulcrum, and the back cover 2 of the passbook 2
Part C is in a non-supporting state (free state).

The pinch roller pressing force switching mechanism 60 is shown in FIG.
The configuration is as shown in FIG. That is,
The pinch roller 12 includes a biasing force applying portion 62 via a shaft 61.
It is attached to a substantially L-shaped support arm 62 having A, and the pinch roller 15 is likewise attached to a substantially L-shaped support arm 64 having a biasing force imparting portion 64A via a shaft 63. .

The urging force applying portion 62A of the support arm 62 is connected to the other end of a pinch spring 66 composed of a tension spring having one end locked to the movable member 65. The biasing force application portion 64A of the support arm 64 is connected to the other end of a pinch spring 68, which is a tension spring having one end locked to the fixing member 67.

The movable member 65 is movable in the left-right direction in the figure by a guide mechanism (not shown), and a cam follower 70 is rotatably attached to one end of the movable member 65. A cam 71 is in rolling contact with the cam follower 70, and when the cam 71 rotates, the movable member 65 moves.

Further, a claw member 65A is integrally provided on the movable member 65, and the claw member 65A causes the urging force applying portion 6 of the support arm 64 as the movable member 65 moves.
It comes in contact with and separates from 4A.

Further, the cam 7 for moving the movable member 65.
The driving of No. 1 is interlocked with the cam 39 of the head moving mechanism 37 via the interlocking mechanism 40, and the thermal head 33 is in the "escape mode" state in which the thermal head 33 is separated from the platen roller 31.
In other words, in the "passbook transport mode" state, the state shown in FIG. 4 is obtained, and the thermal head 33 moves to the platen roller 31.
The state shown in FIG. 5 is obtained in the "print mode" state in which the sheet is pressed against.

The interlocking mechanism 40 has the following structure. That is, as shown in FIG. 1, a gear 45 is attached to a shaft 71A to which a cam 71 is attached, and a gear 46 is in mesh with this gear 45. A pulley 47 is provided integrally with the gear 46.

On the other hand, a pulley 48 integral with the cam 39 is provided.
Is provided, and a timing belt 49 is wound around the pulleys 47 and 48. The rotation of the cam 39 is caused by the pulley 48, the timing belt 49, the pulley 4
It is transmitted to the cam 71 through the gear 7, the gear 46, and the gear 45 in order.

Further, by providing the gears 45 and 46, there is no obstacle when separating the upper unit 1A of the apparatus main body 1 having the clam shell structure from the lower unit 1B.

Next, the operation will be described with reference to FIGS. 6 and 7. When the passbook 2 inserted into the passbook insertion / removal opening 3 is taken into the conveyance path 4, the thermal head 33 is in the "escape mode" shown in FIGS. 1 and 6, and the cam 71 interlocked with the cam 39 via the interlocking mechanism 40. As a result, the movable member 65 of the pinch roller pressing force switching mechanism 60 is in a state of being pushed leftward in the drawings as shown in FIGS. 4 and 6.

As a result, the pinch spring 66 is extended so as to apply the pinch pressure required for carrying the passbook 2.
The passbook 2 is conveyed, and at a predetermined position, the page to be printed 2A to be printed is rolled up by the page turning roller 25, and the clamper 3
When 0 clamps the front end of the page to be printed 2A, the cam 39 of the head moving mechanism 37 rotates to enter the "print mode",
The thermal head 33 is pressed against the printed page 2A.

On the other hand, the cam 71 of the pinch roller pressing force switching mechanism 60 rotates in conjunction with the rotation of the cam 39, and the movable member 65 moves to the right in the figures as shown in FIGS. 5 and 7. Becomes

While the pinch spring 66 for urging the pinch roller 12 of the second transport mechanism 13 is in a relaxed state,
The biasing force applying portion 64A of the support arm 64 that supports the pinch roller 15 of the third transport mechanism 16 is pushed by the claw member 65A of the movable member 65, and the pinch roller 15 separates from the transport roller 14.

As a result, the cover 2B of the passbook 2 is held between the pinch roller 12 and the conveying roller 11 which are weakened to an appropriate value, and the cover 2 is driven when the conveying roller 11 is driven.
A force for conveying B in the direction of arrow B in FIG. 7 is applied, and tension is applied to the printed page 2A wound around the platen roller 31.

In this state, as shown in FIG. 2, the platen roller 31 is rotated to feed the page to be printed 2A, and the thermal head 33 sequentially applies heat to the print patterns in accordance with the print feeding operation of the platen roller 31. By
Printing is performed on the printed page 2A. FIG. 3 shows a state when printing is completed.

As described above, while the thermal recording device 21 as the printing means is printing on the printing surface of the page 2A to be printed, the pinch pressure of the second transport mechanism 13 is weakened to an appropriate value and the transport force is reduced. The third that reduces tension and is not necessary for applying tension
By separating the pinch roller 15 of the transport mechanism 16 from the transport roller 14, an appropriate tension can be applied to the printed page 2A.

Therefore, a phenomenon such as chattering caused by a strong tension applied to the page to be printed 2A is prevented, and good printing quality can be maintained without misalignment due to chattering.

Further, at the time of carrying, carrying is carried out by the second carrying mechanism 13 and the third carrying mechanism 16 at an appropriate pinch pressure, and stable processing without carrying errors becomes possible. FIG. 8 shows another embodiment of a pinch roller pressing force switching mechanism 60 as a conveyance force switching means which is a main part.
Here, instead of the reciprocating movable member 65, a rotation lever 81 having a shaft 80 as a rotation fulcrum is used.

A cam follower 82 is provided at the upper end of the rotary lever 81, and the cam follower 82 is in rolling contact with a cam 83 attached to a shaft 39A of the cam 39 of the head moving mechanism 37.

The rotary lever 81 is always biased clockwise by the spring 84, and the cam follower 82 is pressed against the cam 83. Rotation lever
A pinch spring 66 that applies a pinch pressure to the pinch roller 12 of the second transport mechanism 13 is coupled to the pin 81, and a pin 84 protruding from the support arm 64 of the third transport mechanism 16 is connected to the pin 81. It has an abutting portion 81A that comes into contact with and separates from it.

When the passbook 2 is taken in and conveyed, the cam 83 is in a position where it cannot push the cam follower 82 away,
The rotary lever 81 is in a solid line state. With this, passbook 2
The pinch spring 66 is extended so as to apply the pinch pressure required for the conveyance of the.

Next, when the cam 39 of the head moving mechanism 37 rotates to enter the "printing mode", the cam 83 coaxial with the cam 39 rotates and pushes the cam follower 82 away.
The rotation lever 81 is in a two-dot chain line state.

As a result, the pinch spring 66 for urging the pinch roller 12 of the second transport mechanism 13 is in a relaxed state, and the support arm 64 for supporting the pinch roller 15 of the third transport mechanism 16 is projected. The pin 84 thus pushed is pushed by the abutting portion 81A of the rotary lever 81, and the pinch roller 15 separates from the transport roller 14.

As a result, the cover 2B of the passbook 2 is held between the pinch roller 12 and the conveying roller 11 weakened to an appropriate value, and the cover 2 is driven when the conveying roller 11 is driven.
A force for conveying B in the direction of arrow B in FIG. 7 is applied, and tension is applied to the printed page 2A wound around the platen roller 31.

In the explanation of the embodiment shown in FIG. 8,
The same parts as those in the above-described embodiment are designated by the same reference numerals, and detailed description thereof will be omitted. In addition, it goes without saying that the present invention can be variously modified and implemented without departing from the spirit of the present invention.

[0049]

According to the invention described above, by providing the carrying force switching means, the printing means prints the printing surface of the page to be printed on the downstream side of the page turning means of the carrying means. Since the conveying force of the pair of conveying rollers located is reduced, the pinch pressure can be switched appropriately between conveying and printing, and the phenomenon such as chattering due to the strong tension applied to the printed page to be printed may occur. This is advantageous in that it is possible to prevent misalignment due to chattering, maintain good print quality, and perform stable processing without transport errors.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing an embodiment of a printer device of the present invention.

FIG. 2 is a diagram showing a state at the start of printing in the embodiment.

FIG. 3 is a diagram showing a state at the end of printing in the embodiment.

FIG. 4 is a view showing a state of a pinch roller pressing force switching mechanism of a main part of the embodiment when carrying a passbook.

FIG. 5 is a diagram showing a printing state of the pinch roller pressing force switching mechanism of the essential part of the embodiment.

FIG. 6 is a diagram schematically showing a state of the apparatus of the embodiment when carrying a passbook.

FIG. 7 is a diagram schematically showing a printing state of the apparatus of the embodiment.

FIG. 8 is a diagram showing another embodiment of a pinch roller pressing force switching mechanism that is a main part.

[Explanation of symbols]

1 ... Device main body, 2 ... Passbook (booklet printing medium), 2A ... Printed page, 2B ... Front cover, 2C ... Back cover, 4 ... Conveyance path, 7 ...
Transport rollers, 8 ... Pinch rollers, 10 ... First transport mechanism (first transport means), 11 ... Transport rollers, 12 ... Pinch rollers, 13 ... Second transport mechanism (second transport means), 1
4 ... Conveying rollers, 15 ... Pinch rollers, 16 ... Third conveying mechanism (third conveying means), 20 ... Page turning mechanism (page turning means), 21 ... Thermal recording device (printing means), 25 ... Turning roller , 31 ... Platen roller, 37 ... Head moving mechanism, 40 ... Interlocking mechanism, 33 ... Thermal head (printing head), 60 ... Pinch roller pressing force switching mechanism (conveying force switching means), 61 ... Shaft, 62 ... Support arm, 63 ... Axis, 64
... Support arm, 65 ... Movable member, 65A ... Claw member, 66
... Pinch spring, 67 ... Fixing member, 68 ... Pinch spring, 7
0 ... Cam follower, 71 ... Cam, 71A ... Axis, 80 ...
Shaft, 81 ... Rotating lever, 81A ... Abutting portion, 82 ... Cam follower, 83 ... Cam, 84 ... Pin.

Claims (3)

[Claims] 1. A transporting means comprising a plurality of transporting roller pairs for holding an open booklet-shaped print medium and transporting the booklet print medium with rotation, and a page to be printed on the print medium transported by the transporting means. A page turning-up unit that raises the page, a printing unit that prints the page to be printed rolled up by the page turning unit on the printing surface while feeding against the conveying force of the conveying unit, and a printing of the page to be printed by the printing unit. A printer device, comprising: a conveying force switching unit configured to reduce a conveying force of a conveying roller pair located on a downstream side of the page turning unit of the conveying unit while printing on the surface. 2. A plurality of conveyance roller pairs, each of which is provided with a conveyance roller and a pinch roller, which are provided in a state of holding an open booklet-shaped print medium, and a conveyance path of a print medium conveyed through these conveyance roller pairs. And a page-turning unit that is provided in the middle of the page to turn up the page to be printed on the print medium, and the page to be printed that has been turned up by the page-turning unit is printed on the printing surface while feeding it against the conveying force of the pair of conveying rollers. Printing means, and a pinch roller urging means that urges the pinch rollers of the pair of conveying rollers located downstream of the position where the page turning means is arranged in the conveying path of the print medium to press the conveying rollers, Pinch roller pressing force switching means for reducing the pressing force of the pinch roller urged by the pinch roller urging means during printing on the printing surface of the page to be printed by the printing means. Printer apparatus according to claim. 3. A plurality of conveyance roller pairs, each of which is provided with a conveyance roller and a pinch roller, which are provided in a state of holding an open booklet-shaped print medium, and a conveyance path of a print medium conveyed through these conveyance roller pairs. A page-turning means provided in the middle of the page to turn up the printed page of the print medium, and the printed page rolled up by the page-turning means is held by a platen roller and a print head capable of coming into contact with and separating from the platen roller. And a pinch of the conveying roller pair located downstream of the position where the page turning means is arranged in the conveying path of the print medium while feeding while resisting the conveying force of the conveying roller pair. A pinch roller urging means for urging the roller to press the conveying roller; and a printing surface of the page to be printed by the print head in association with the contact / separation operation of the platen roller of the print head of the printing means. While printing, the printer apparatus characterized by comprising comprises a, and a pinch roller pressing force switching means for reducing the pressing force of the biased pinch roller by said pinch roller biasing means.