JP2552298Y2 - Printer - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printer provided with a tractor set for transporting continuous paper.

[0002]

2. Description of the Related Art Conventionally, for example, a printer having a structure shown in FIG. 4 has been proposed. In this printer, a cut paper carry-in port 2 is provided at a lower portion of the front surface of a main body 1 and a paper carry-out port 3 is provided at a substantially central portion of an upper portion of the main body 1. 3, a first transport path 4 is formed. Then, the first transport path 4
A plurality of transport rollers 5 and a main roller 6 that are rotated in close contact with each other are provided along the upper and lower sides of the paper, and are opposed to each other via a first transport path 4 in the vicinity of the paper outlet 3. and recording heads 7 and platen 8 is provided, no line recording on the conveyed sheet, the sheet discharge port 3
The paper is discharged from the upper side .

[0003] A pair of tractor sets 10 on both sides are integrally incorporated in a rear portion of the main body 1, and the endless belt 12 is rotated by rotating a prismatic drive shaft (square shaft) 11. It is designed to be driven.
The belt 12 is provided with a plurality of sprocket pins 14 projecting at predetermined intervals and engaging the sprocket pins 14 with round holes provided at predetermined intervals on both sides of the continuous paper. The continuous paper is conveyed in a state in which it is set. In addition, a continuous paper entrance 15
And a second transport path 16 communicating from the continuous paper inlet 15 to the first transport path 4 below the platen 8 along the lower side of the peripheral surface of the main roller 6. The continuous paper conveyed from the rear side by the tractor set 10 is conveyed between the recording head 7 and the platen 8.

Conventionally, for example, a printer having a structure shown in FIG. 5 has been proposed. This printer is different from the printer shown in FIG. 4 in that a tractor block 17 having a tractor set 10 is provided separately from the main body 1.
17 is detachably mounted on a guide portion 18 provided at the rear portion of the main body 1.

[0005] The configuration shown in FIGS.
Then, the continuous paper carried in from the rear side is
The paper is conveyed on the conveyance path 16 and recording is performed.
By discharging the paper to the side,
In both cases, the recorded contents can be easily checked.
ing.

[0006]

In the printer having the structure shown in FIG. 4, the tractor set 10 protrudes rearward of the main body 1, so that the tractor set is moved from the front end of the printer.
Since the length A to the rear end portion 10 is large and the projected area is large, the packing volume is also large, and there is a problem that packing cost, transportation cost, storage cost, and the like are expensive.

In the printer having the structure shown in FIG. 5, although the length of the main body 1 is reduced when the tractor block 17 is removed, the tractor block 17 is positioned at the reference position of the guide portion 18 of the main body 1. Installation work for mounting with high accuracy and tractor set 10 with drive shaft 11
The connection between the tractor block 17 and the tractor block 17 is separated from the main body 1, depending on the mounting state of the tractor block 17. In addition, there is a problem that packing cost is expensive and inventory management becomes complicated.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a printer that can reduce the projection area while ensuring good operability and can increase the mounting accuracy of a tractor set. I do.

[0009]

Means for Solving the Problems The printer of claim 1, wherein a predetermined through the tractor blocks attached to the body
The printing head prints and outputs the continuous paper to the continuous paper while sequentially transporting the continuous paper to the recording surface portion where the recording head is disposed through the paper entrance and the paper transport path from the loading direction .
From the paper carry-out port to a predetermined carry-out direction that intersects the carry-in direction
In the printer for discharging, a tractor block is provided which is rotatably provided in a direction along the unloading direction with a drive shaft provided on the main body as a fulcrum at one end and a free end at the other end. And a tractor set mounted on the block and driven by the drive shaft to convey the continuous paper.

[0010] The printer according to claim 2 is the printer according to claim 1.
In the printer, the carry-in direction is the rear side and the carry-out direction is
Is the one above.

[0011]

In the printer according to the first aspect, the tractor set is driven by rotating the drive shaft, and the continuous paper is conveyed by the tractor set. For continuous
When transporting paper, the tractor block is
Paper is directed in a different loading direction that intersects the
The operability is improved because the direction is different from the discharge direction.
You. In addition, the tractor block on which the tractor set is mounted rotates in a direction along the unloading direction with the drive shaft as a fulcrum, so that the paper loading direction and the paper discharging direction are different.
In the wasted space on the paper exit side caused by
A tractor block is arranged.

According to the second aspect of the present invention, there is provided a printer according to the first aspect.
In addition to the loading operation, continuous paper can be smoothly fed from the rear paper loading port.
And continuous paper upward from the paper exit
Discharges paper, making it easy to record on continuous paper.
Will be confirmed.

[0013]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of a printer according to an embodiment of the present invention;

In FIGS. 1 and 2, reference numeral 20 denotes a main body of the printer. The main body 20 is formed by connecting a pair of main frames 21 which are arranged on both sides facing each other. Near the lower end of the front side, which is the operator side between the main frames 21, a cut-sheet carry-in port 22 is provided, and a paper carry-out port 23 is provided in a substantially central portion of the upper part. In addition, a first transport path 25 curved upward is formed between the cut sheet carry-in port 22 and the sheet carry-out port 23.

A main roller 26 and a plurality of lower conveying rollers 27 are supported between the main frames 21 along a lower conveying surface of the first conveying path 25 so as to be rotatable forward and backward. The first transport path 25 is located near the paper exit 23.
A platen 31 is attached to the platen 31. Further, a pair of transport rollers 32a and 32b are provided above the platen 31.

A pair of tractor mounts 33 are provided on the rear side of the main frame 21 so as to protrude rearward and upward, and a pair of shaft holding portions 34 are provided at positions above the tractor mounts 33. It is protruding.

As shown in FIG. 3, a circular hole 34a is formed in each of the shaft holding portions 34, and a bearing 35 is rotatably fitted in the circular hole 34a. Further, a square hole 35a is formed in the center of the bearing body 35, and a substantially prismatic drive shaft (square shaft) 36 is fitted and supported in the square hole 35a.

1 to 3, reference numeral 37 denotes a tractor block. The tractor block 37 has a tractor set 39 housed in a substantially box-shaped case body 38 having an open upper surface. In this tractor set 39, an endless belt 42 is hung between shafts 40 and 41 rotatably provided in the vicinity of both ends, and extends outward from the belt 42 at a predetermined interval. Multiple sprocket pins 42a
Is protruding. A substantially plate-shaped paper press 43 having an elongated hole 43a formed along the upper portion of the belt 42 is attached to the upper portion of the case body 38.
Is held parallel to the upper part of the belt 42 by operating the lock lever 44.

The tractor block 37 has a drive shaft inserted into a square hole 40a formed at the center of one shaft body 40.
By fitting each end of 36, this drive shaft 36
Centered on the rear side, which is the loading direction
2 and is rotatably supported to a retreating position upward, which is the unloading direction, and the bottom surface portion 38a of the case body 38 is in contact with the tractor mounting base 33 as shown in FIG. It is fixed at a predetermined position by a stop mechanism. Then, with the tractor block 37 fixed in this manner, the drive shaft 36 connected to the drive shaft of the motor (not shown) via the transmission mechanism is driven to rotate,
The sprocket pin 42a of the tractor set 39 can be driven to rotate. The bottom 38a of the case body 38
Is formed with an arc-shaped bulging portion 38b, so that when the tractor block 37 is in contact with the upper surface of the tractor mounting base 33, the bulging portion 38b is housed in the recess of the tractor mounting base 33 and positioned. Has become.

A continuous paper carry-in port 45 as a paper carry-in port is provided on the rear surface of the main body 20 at a height position along the upper surface portion 38c of the case body 38 of the tractor block 37. A second transport path 46 as a paper transport path is provided in a state of communicating with the first transport path 25 below the platen 31 from the opening 45 along the lower side of the peripheral surface of the main roller 26. A paper pan 47 and a continuous paper transport roller 48 are provided along the lower surface of the second transport path 46.

Reference numeral 54 denotes a carrier block. The carrier block 54 is formed by connecting a pair of carrier frames 55 on both sides. And this carrier block 54
On the rear side, there is provided a curved upper transfer surface facing the lower transfer surface of the main frame 21 with a gap therebetween, and along the upper transfer surface, the main roller 26 of the main frame 21 is provided. In addition, a plurality of upper transport rollers 57 that rotate in close contact with the lower transport roller 27 are supported.

A carrier (not shown) is provided above the carrier block 54. A recording head 61 and a ribbon cassette 63 are mounted on the carrier so as to be movable in the width direction of the paper. Recording surface
64 faces the platen 31 attached to the main frame 21 with a slight gap.

At the lower end of the front side of the carrier frame 55, a bearing portion 66 cut out in a substantially U-shape is provided. The carrier block 54 is rotatably mounted on the front side of the main frame 21 by being fitted to the shaft 67, so that when a paper jam occurs in the first transport path 25, the first transport The road 25 can be expanded.

Next, the operation of the printer of this embodiment will be described.

First, when recording is performed using a cut sheet, the cut sheet is inserted into the first conveyance path 25 from the front cut sheet carry-in port 22. The cut paper is conveyed by rotating the upper and lower conveying rollers 27 and 57 and the main roller 26, and the cut paper is conveyed to the gap between the platen 31 and the recording head 61.
The recording is performed by the recording surface portion 64 of the recording head 61 while being conveyed to the recording head 65. The cut sheet recorded in this manner is conveyed by the conveying rollers 32a and 32b above the recording head 61, and is discharged from the sheet outlet 23 in a substantially vertical shape.

When recording is performed using continuous paper, the lock lever 44 is rotated to operate while the tractor block 37 is in contact with and fixed to the tractor mounting table 33 as shown in FIG. When the presser foot 43 is released, the round holes formed on both sides along the longitudinal direction of the continuous paper at predetermined intervals are engaged with the sprocket pins 42a, and the lock lever 44
Is rotated so that the paper presser 43 is held parallel to the upper part of the belt 42, and the continuous paper is mounted on the upper surface 38c of the case body 38 of the tractor block 37.

In this state, by rotating the drive shaft 36, the belt 42 and the sprocket pin 42a are rotated via the shaft body 40, and the continuous paper is fed from the continuous paper inlet 45 to the second transport path 46. To supply. This continuous form
While being guided by the paper pan 47, the paper is conveyed by the main roller 26 and the continuous paper conveyance roller 48,
Is transported to the gap 65 of Then, similarly to the case where cut paper is used, printing is performed by the recording surface portion 64 of the recording head 61 and the paper is discharged from the paper outlet 23.

When the printer is transported or the like, the locking mechanism (not shown) is released, and the tractor block 37 is rotated substantially vertically about the drive shaft 36 as shown in FIG. Packing with cushioning material.

According to the printer of the present embodiment ,
A state in which the tractor block 37 is arranged to protrude rearward
Thus, by rotating the drive shaft 36, the sprocket pin 42a of the tractor set 39 can be rotationally driven to convey the continuous paper . In this state, continuous paper is loaded from the rear side.
Is discharged upward through the curved second conveying path 46.
The continuous paper placed on the rear side can be supplied smoothly.
The continuous paper that is supplied and the continuous paper that is discharged
Interference can be suppressed, and operability can be improved. one
On the other hand, the tractor block 37 on which the tractor set 39 is mounted is pivoted upward, that is, substantially vertically about the drive shaft 36, so that the paper loading direction and the paper discharging direction are different.
Unnecessary space on the side of paper exit 23 caused by slackening
The tractor block 37 can be disposed at the front end, and the length L of the front and rear of the printer can be reduced to reduce the projection area. Therefore, we have reduced the packaging volume,
Transportation costs and storage costs can be reduced.

The tractor block 37 is rotated about the drive shaft 36 as a fulcrum.
Does not need to be attached to or detached from the drive shaft 36, and the drive shaft 36 becomes the reference position for mounting the tractor set 39,
It is possible to increase the positional accuracy of mounting the tractor set 36, thereby improving the accuracy of sheet conveyance, and to suppress occurrence of recording bias or the like.

Further, since there is no need to remove the tractor block 37 from the drive shaft 36, there is no need to separately pack and manage the tractor block 37 during transportation or the like, so that packing costs can be reduced and inventory management can be easily performed. can do.

Further, in the printer of the present embodiment, cut sheets and the like are ejected in a substantially vertical shape from the sheet carry-out port 23, so that the operator can easily observe the recording state of the sheets.

[0033]

[Effect of the invention] According to the printer of claim 1, wherein the continuous
When transporting paper, the tractor block ejects the paper.
Direction is different from the paper loading direction.
The operability can be improved by making the discharge direction different. Also,
By rotating the tractor block equipped with the tractor set in the unloading direction with the drive shaft as a fulcrum, the paper loading direction and the paper discharging direction can be made different.
In the wasted space on the paper exit side
Can be placed. Therefore, it is possible to reduce the length of the printer, reduce the projected area, and reduce the packaging volume to reduce packaging, transportation, or storage costs.
You. Furthermore, because such a reference position of the mounting of the drive shaft tractor set, improve the accuracy of the paper transport by increasing the positional accuracy of the mounting of the tractor set, it is possible to improve the quality of the recording.

According to the printer of the second aspect,
In addition to the effects described in 1, the continuous paper is fed from the paper
It can be carried in smoothly, and continuous paper can be
By discharging upward, the contents recorded on the continuous paper
It can be easily confirmed and operability can be improved.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a state in which a tractor block of a printer according to an embodiment of the present invention is rotated.

FIG. 2 is a sectional view showing a use state of the printer.

FIG. 3 is an exploded perspective view showing the tractor block.

FIG. 4 is a sectional view showing a conventional printer.

FIG. 5 is a sectional view showing a conventional printer.

[Explanation of symbols]

20 Main unit 23 Paper exit 36 Drive shaft 37 Tractor block 39 Tractor set 45 Continuous paper entrance as paper entrance 46 Second transport path as paper transport path 61 Recording head 64 Recording surface

Claims (2)

(57) [Scope of request for utility model registration] 1. A continuous paper is successively conveyed from a predetermined carrying direction to a recording surface portion on which a recording head is disposed through a paper entrance and a paper conveyance path via a tractor block attached to a main body, and the continuous paper is conveyed by the recording head. Output from the paper exit to the specified direction
In the printer that discharges the out direction, the direction in which the whole other end to a drive shaft provided in the main body as a fulcrum at one end as a free end along said unloading direction
Printer to attach the provided tractor block rotatably, characterized by comprising a tractor set for conveying the continuous paper is driven by said drive shaft while being mounted on the tractor block. 2. The loading direction is the rear side, and the unloading direction is upward.
The printer of claim 1, wherein a is one.