JPS62136437A - Printing device - Google Patents

Abstract

PURPOSE:To enhance the maneuverability of a printing device by rotating the sheet exhaust device of an automatic sheet feeder to allow it to retract from over a form tractor, and thereby facilitating loading of continued sheets in the form tractor. CONSTITUTION:To use a form tractor 51, a sheet exhaust device 22 is turned backward and the top of the form tractor 51 is opened, followed by insertion of hand into a cavity 61, and a lower tractor cover 56b is rotated to allow loading of continued sheets 52. After setting of these continued sheets 52 round a platen 12, an upper tractor cover 56b is rotated to allow loading of continued sheet 52. Even though the exhaust device 22 stores at this time single slips 4 stacked, they 4 are held by a paper support 40 and a cover 39 to be free of risk to slip off from inside the exhaust device 22. When the exhaust device 22 turns to behind the printer 1, a passage is provided for the continued sheets 52 between the device 22 and the printer 1 to permit easier loading of the continued sheets on the tractor 51 in rotating condition, which should enhance the maneuverability for the printing device.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a printing device, and particularly to a printing device in which a form tractor and an auto sheet feeder are simultaneously mounted.

(Prior Art) A printing device is equipped with an automatic paper feeder in order to quickly and easily load recording paper. Automatic sheet feeding devices include an automatic sheet feeder that automatically feeds single sheets, and a form tractor that automatically feeds continuous sheets.

Conventionally, a printing device can be equipped with either an auto sheet feeder or a form tractor as an automatic sheet feeding device. That is, when attaching an auto sheet feeder, the form tractor must be removed from the printing device and then the auto sheet feeder is attached; conversely, when attaching the form tractor, the auto sheet feeder must be removed.

Therefore, in recent years, in order to improve the operability of printing devices,
Printing devices that can be equipped with both an auto sheet feeder and a form tractor at the same time have appeared.

In this printing device that can be installed simultaneously, a paper feeding device of an auto sheet feeder is installed at the lower part of the printer, and a form tractor is installed at the upper part of the printer. Further above the form tractor, a paper discharge device of an auto sheet feeder, particularly a paper discharge tray, is installed.

Therefore, when printing on single-sheet paper, the single-sheet paper is fed to the printer from the paper feeder at the bottom of the printer.
After being printed by the printer, it is ejected to a paper ejection device located above the printer. When printing on continuous paper, the continuous paper is fed to the printer from a form tractor located above the printer.

However, in such conventional printing devices,
A form tractor is installed above the printer, and an auto sheet feeder paper ejection device is installed above this form tractor, so when using the form tractor, continuous paper is transferred to the form tractor. Because it was difficult to set, I had to remove the paper ejection device from the printer each time. As a result, it takes time and effort to remove the paper ejecting device, which not only causes poor operability, but also
It was also necessary to secure a place to place the removed paper ejecting device, further impairing operability.

(Purpose of the Invention) Therefore, the present invention provides an automatic sheet feeder, especially a paper discharging device at the top of a form tractor, which is rotatably installed to the rear of a printing device. The purpose of this invention is to rotate and retract from the upper part of the form tractor, thereby making it simple and easy to set continuous paper on the form tractor, thereby improving the operability of the printing device.

(Structure of the Invention) In order to achieve the above object, the present invention provides a printing device in which a form tractor is attached to the upper part and an auto sheet feeder is further attached above the form tractor, in which the auto sheet feeder is rotatably arranged. , the form tractor can be evacuated from above.

Hereinafter, the present invention will be specifically explained based on examples.

1 to 3 are diagrams showing an embodiment of the printing device of the present invention.

In FIG. 1, 1 is a printer, and an auto sheet feeder 2 is attached below the printer 1 to automatically feed cut sheets. A cassette 3 can be attached to the auto sheet feeder 2, and a second
As shown in the figure, single sheets 4 are stored. A kick roller 5 is disposed inside the auto sheet feeder 2, and the cut sheet 4 is urged in the direction of the kick roller 5 by the bottom plate 3A, so that the uppermost sheet sheet 4 is in contact with the kick roller 5. . The bottom plate 3A is urged toward the kick roller 5 by a spring 3D via an arm 3B and a shaft 3C. The kick roller 5 is in contact with a friction pad 6, and works together with the friction bird 6 to feed the sheets 4 in the cassette 3 one by one. That is, the kick roller 5 is rotatably supported by the shaft 7,
The shaft 7 is connected to a stepping motor 8 via a roller (not shown).
is connected to. Therefore, when the kick roller 5 is rotationally driven by the stepping motor 8, the kick roller 5 holds the slip sheets 4 one by one between the kick roller 5 and the friction pad 6, and feeds out the sheets one by one from the cassette 3. The cut sheet 4 sent out from the cassette 3 is guided by the guide plate 9.10, reaches the feed rollers lla and 11b, and is further fed into the printer 1 by the feed rollers lla and llb.

A platen 12 is rotatably disposed within the printer 1 via its shaft 13, and a platen gear (as shown) is fixed to the shaft 13. Further, a guide shaft 14 and a support frame 15 are disposed in the printer 1 in parallel with the platen 12, and the guide shaft 14 and the support frame 15 slidably support a carriage 16. The carriage 16 is equipped with a printing mechanism 17,
The printing mechanism 17 includes, for example, a hammer 17a, a daisy wheel 17b, etc., and prints on paper set on the platen 12. The cut sheet 4 fed into the printer 1 is guided by guide plates 18 and 19 and moved to the platen 1.
2 and is wound closely around the platen 12 by rollers 20.21. The cut sheet 4 placed on the platen 12 is printed by a printing mechanism 17 and then discharged to a printing device 22 installed above the printer 1.

The shrine device 22 is installed on a pedestal 23 shown in FIG.

The frame 23 has side frames 24a and 24b, and three shafts 25, 26, and 27 stretched between the side frames 24a and 24b. Slits 28a and 28b are formed in the lower end surface. The front lower ends of the side frames 24a and 24b are inserted into the lip lifter 1 through slits 29a and 29b formed on the top surface of the printer 1, and both end receiving portions of the platen 12 are inserted into the slit 28a.
, 28b and fixed.

The rear lower ends of the side frames 24a and 24b are arranged on the upper surface of the printer 1. The shaft 25 disposed above the slits 28a and 28b is connected to the side frame 24a.
, 24b, and a connecting gear 30 that meshes with the platen gear is attached to a projecting end projecting outward from the side frame 24a. Further, a gear 31 is fixed near the side frame 24a of the shaft 25, and the gear 31 rotates together with the shaft 25 when the shaft 25 is rotationally driven via the connecting gear 30. The shaft 26 is attached to the side frame 24a
, 24b, and the shaft 27 is fixed to the rear side of the side frames 24a, 24b. The shaft 27 has chamfered portions 32a at predetermined intervals.
32b is formed, and a stopper 3 is formed on the left side of the left chamfered part 32b at a predetermined distance from the chamfered part 32b.
3 is installed. The paper discharge device 22 has a side wall 34a.
, 34b, the bottom wall 35, the shafts 36a, 36b extending in parallel between the side walls 34a, 34b, and the shaft 3.
5a and 36b, the roller 37a takes the cut sheet 4 discharged from the printer 1 into the paper discharge device 22;
37b, a front cover 38, an opening/closing cover 39, and a paper support 40. Side walls 34a, 34b
A slit 41 into which the shaft 26 is inserted is formed at the front lower end of the side walls 34a, 34b.
A slit 42 into which the shaft 27 is inserted is formed at the lower end of the midsection. The slit 42 has a spherical shape in which the shaft 27 can be loosely inserted at the inner part thereof, and opens narrowly from the spherical inner part toward the lower ends of the side walls 34a, 34b. Therefore, in order to insert the shaft 27 into this slit 42, the chamfered portions 32a and 32b of the shaft 27 must be inserted.
Insert the shaft 27 into the slit 42, and then insert the shaft 27 into the slit 42.
7 is inserted into the spherical inner part of the slit 42, the Shingi device 22 is moved to the left and brought into contact with the stopper 33. Thereafter, as shown in FIG. 3, a stopper 4 having a slit 43 having a similar shape to the linear chamfer 32a is formed on the right side chamfer 32a.
Insert 4. This allows the shaft 27 to pass through the slit 42.
The ritual device 22 is attached to the pedestal 23 in a manner that prevents it from coming off and is rotatable about the shaft 27. The paper support 40 is held by a holding portion 45 formed on the bottom wall 35 of the Shingi device 22, and its tip portion is attached so as to cover the rear open end of the Shingi device 22.

The cover 39 is attached to brackets 46a and 46b formed on the side walls 34a and 34b so that it can be opened and closed and can be maintained in a closed state. Furthermore, the side walls 34a, 34
Stoppers 47a and 47b are formed at the outer lower ends of b, protruding outward from the side walls 34a and 34b, and having their tips bent downward.

A gear 48 that meshes with the gear 31 of the pedestal 23 is attached to the end of the shaft 36a that protrudes from the side wall 34a, and when the gear 48 is rotated by the gear 31, the shaft 36a rotates together with the roller 37a. roller 3
The roller 37b in contact with 7a rotates together.

A form tractor 51 is installed above the printer 1 and below the printing device 22, and the form tractor 51 automatically feeds continuous paper 52. The form tractor 51 includes a guide rail 54 and a drive shaft 55 supported by both side plates 53a and 53b, and a guide rail 54 supported by both side plates 53a and 53b.
4 and a pair of tractor parts 56.57 movably attached to the drive shaft 55, and when the drive shaft 55 rotates, the tractor bodies 56a and 57a of the tractor parts 56.57 rotate continuously. Paper 52 is fed.

Further, the tractor portions 56 and 57 are provided with rotatable tractor covers 56b and 57b.
Continuous paper 52 is set between 6b, 57b and tractor main bodies 56a, 57a. A tractor gear 58 is attached to the drive shaft 55, and the tractor gear 58 can be connected to the platen gear via a continuous gear (path shown). This connecting gear has an electromagnetic clutch built therein, and the platen gear and the tractor gear are connected and disconnected by turning the electromagnetic clutch ON and OFF.

A switching lever (not shown) is attached to the printer 1, and operation of the auto sheet feeder 2 and the form tractor 51 can be selectively switched by operating the switching lever. Two slits 5 are provided at the lower ends of the side plates 53a and 53b, respectively.
9.60 is formed.

On the other hand, a form tractor 5 is attached to the rear upper end of the printer 1.
A recess 61 is formed in which the recess 61 can be stored.
Inside are four shafts 62a fixed to the printer 1.
, 62b, 62c, and 62d are prominent.

The form tractor 51 is attached so that the shafts 62a, 62b, 62c, and 62d are inserted into the slits 59, 60 of the form tractor 51, and the form tractor 51 is attached to the printer (2).

Next, the action will be explained.

When the auto sheet feeder 2 is used, the platen gear and the tractor gear 58 are disconnected, and a drive signal is output from the control circuit of the printer 1 to the stepping motor 8 via the driver.

The kick roller 5 is rotated by the stepping motor 8, and the sheets 4 in the cassette 3 are fed out one by one.

The cut sheet 4 sent out from the cassette 3 is placed on the guide plate 9.
10 and guide plates 18 and 19 and fed by feed rollers lla and llb, the platen 12
cents. The cut sheet 4 set on the platen 12 is printed by the printing mechanism 17, and when the printing is completed, it is discharged to the paper discharge device 22. At this time, cut sheet 4
are taken in by the rollers 37a and 37b of the paper discharge device 22, guided by the front cover 38 and cover 39, and stacked inside the paper discharge device 22. The cut sheets 4 stacked in the paper discharge device 22 are taken out from the paper discharge device 22 by opening the cover 39.

On the other hand, in order to use the form tractor 51, the paper discharge device 22 is rotated rearward about the shaft 27, as shown in FIG. 4, to open the upper part of the form tractor 51. Insert your hand into the recess 61 from above the opened form tractor 51, and first open the lower tractor cover 56.
b and set the continuous paper 52 as shown by the arrow. After that, set the continuous paper 52 on the platen 12,
Further, the upper tractor cover 56b is rotated to set the continuous paper 52 as shown by the arrow. At this time, even if the cut sheets 4 are stacked in the paper ejecting device 22, the cut sheets 4 are held by the paper support 40 and the cover 39, and will not fall out from the paper ejecting device 22. . Even if the guide bar 39 is not attached to the paper ejecting device 22, the paper support 7 in which the tip of the paper support is extended to the upper side of the paper ejecting device 22 as shown in FIG.
1, it is possible to prevent the cut sheet 4 from buckling and falling off from the paper discharging device 22 when the paper discharging device 22 is rotated to the rear of the printer 1.

Further, since the paper ejection device 22 is formed with stoppers 47a and 47b with an interval wider than the paper width of the continuous paper 52, when the paper ejection device 22 is rotated toward the rear of the printer 1,
A path through which the continuous paper 52 can pass is secured between the paper discharge device 22 and the printer 1. Therefore, the continuous paper 52 can be easily set on the form tractor 51 while the paper discharge device 22 is rotated backward.

Thereafter, the paper ejecting device 22 is rotated again to return to its original state, or the platen gear and the tractor gear 58 are connected to each other, and the form tractor 51 is driven in conjunction with the platen 12. do. Therefore, it is easy to feed the continuous paper 52 to the form tractor 51.
Moreover, it is easy to perform, and there is no need to remove the paper ejecting device 22 one by one as in the conventional case. As a result, the operability of the printer 1, that is, the printing device, can be improved.

(Effects) According to the present invention, when using a form tractor, the auto sheet feeder, especially the paper ejection device at the upper part of the form tractor, can be rotated rearward and retracted from the upper part of the form tractor. There is no need to remove the printer each time, and the operability of the printing device can be improved.

[Brief explanation of drawings]

1 to 4 are diagrams showing one embodiment of the printing device of the invention. FIG. 1 is a side sectional view of the printing device with an auto sheet feeder and a form tractor attached, and FIG.
The figure is an exploded perspective view, FIG. 3 is an enlarged perspective view of the chamfered portions 32a and 32b of the shaft 27, and FIG. 4 is an exploded perspective view of the paper discharging device 2.
FIG. 2 is a side sectional view similar to FIG. 1 when 2 is rotated backward; FIG. 5 is a perspective view showing an embodiment in which the paper support 40 of the paper discharge device 22 is modified. 1...Printer, 2...Auto sheet feeder, 4...
Slip paper, 22... Paper discharge device, 40... Paper support, 51... Form tractor, Fig. 3

Claims (2)

[Claims] (1) A printing device in which a form tractor is attached to the upper part and an auto sheet feeder is further attached above it, characterized in that the auto sheet feeder is arranged rotatably and can be retracted from above the form tractor. printing device. (2) The printing device according to claim 1, further comprising a paper support that prevents the paper placed on the stacker section from falling off or buckling when the auto sheet feeder rotates.