JPH0524732A - Paper discharging device of printing apparatus - Google Patents

Abstract

PURPOSE:To provide a paper discharging device of a printer, in which such using form that paper sheets are discharged to the side of the body of a paper discharging device and such using form that paper is discharged to the top face of the body can quickly be switched. CONSTITUTION:A discharged paper receiver 17 is formed on the top face of the body 1 of a paper discharging device in which a printing mechanism is built, and a tray 32 for discharged paper is rotatably and detachably secured on the side face of the body 1, and a first guide face 18 and second guide face 19, which are curved in a U-shape, and a charged paper passage switching member 26, which can be operated independently, are provided on the side of the body so that such two using form that even if the tray 32 for discharged paper is detached from the body, paper can be discharged to the side of the body 1 and that paper is discharged to the discharged paper receiver 17 on the top face of the body 1 may be selected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper discharge device for printing equipment.

[0002]

2. Description of the Related Art Conventionally, printed paper is ejected to a paper ejection tray provided on the side of the main body, or printed paper is U-printed.
2. Description of the Related Art There is a paper discharge device of a printing device that is inverted to a letter shape and discharges to a paper discharge receiver formed on the upper surface of the main body. in this case,
If you think about printing on the upper surface of the paper inside the main body, when you eject the printed paper from the side of the main body, the printed surface will face up, and the printed paper will face up. When the paper is ejected to, the printing surface faces down and the face down occurs. The conventional example is shown in FIGS.

In FIG. 3, reference numeral 50 denotes a part of a main body in which a printing mechanism (not shown) is built in. A discharge tray 51 is formed on the upper surface of the main body 50, and a discharge tray is provided on the left side of the main body 50. 52 is held so as to be vertically rotatable about a support shaft 53. Further, the main body 50 is provided with a guide surface 54 for inverting the paper discharged from the printing mechanism into a U-shape toward the paper discharge tray 51, and a rib 55 facing the guide surface 54 at a predetermined interval. It is formed on the paper discharge tray 52.
Near the lower part and the upper part of the guide surface 54, paired sheet discharge rollers 56 and 57 for discharging the sheet are rotatably held. Therefore, as shown in FIG. 3A, when the discharge tray 52 is opened, the discharge roller 5 below
The papers sent out from Nos. 6 and 57 are discharged onto the paper discharge tray 52, and when the paper discharge tray 52 is closed as shown in FIG. The ribs 55 of the paper tray 52 are inverted into a U-shape so that the main body 5
The paper is discharged to the paper discharge tray 51 on the upper surface of 0.

Since FIG. 4 also has a similar structure, the same reference numerals are used and a description thereof will be omitted. The major difference is that the flap 59 rotates about the support shaft 58, and the flap 59 has a spring 60. Is urged counterclockwise by. Therefore, as shown in FIG.
In the state where 2 is opened, the flap 59 is attached to the discharge tray 52.
Since it is released from and is rotated counterclockwise by the urging force of the spring 60, the paper delivered from the lower paper ejection rollers 56 and 57 is guided by the flap 59 and ejected onto the paper ejection tray 52, As shown in FIG. 4B, when the paper discharge tray 52 is closed, the flap 59 is attached to the paper discharge tray 5.
Since the paper is pushed by 2 and forcedly rotated clockwise, the paper passes between the arc surface formed by the flap 59 and the rib 55 of the paper discharge tray 52 and the guide surface 54, and the upper surface of the main body 50. The sheet is discharged to the sheet receiving tray 51.

[0005]

3 and 4, the sheet guide is provided to the sheet discharge tray 52 in order to reverse the sheet to the sheet discharge tray 51 formed on the upper surface of the main body 50 and discharge the sheet. Ribs 55 for the paper must be formed,
The shape of 2 is complicated and expensive. 3 and 4, the discharge tray 52 can be removed from the main body 50 in the case where the paper is discharged to the side of the main body 50, the discharge tray 52 can be removed from the main body 50. When the paper is discharged to the paper receiver 51, the paper discharge tray 52 must be mounted, and the paper discharge path cannot be selected quickly.

[0006]

SUMMARY OF THE INVENTION According to the present invention, there is provided a main body having a built-in printing mechanism, a paper feeding section for feeding paper to the printing mechanism, a paper ejection receiver formed on an upper surface of the main body, and the printing unit. It is fixed to the main body by being opposed to a first guide surface that is curved in a substantially U-shape from the end of the mechanism toward the discharge receiver and an upper outer peripheral surface of the first guide surface with a predetermined gap. A second guide surface, a sheet discharge tray rotatably and detachably held on the first guide surface side of the main body, and a second guide surface disposed near a lower portion of the second guide surface. A paper discharge path switching member that is rotatably held up and down around a support shaft and that is arranged to face the lower outer periphery of the first guide surface, and is connected to the paper discharge path switching member that is provided outside the main body. It is configured by the operation unit.

[0007]

The main body side is provided with a first guide surface and a second guide surface facing the outer periphery of the upper portion of the first guide surface, and a discharge path switching member is provided on the outer periphery of the lower portion of the first guide surface. Since the sheets are opposed to each other, the sheet discharge path switching member, which is displaced in one direction, and the first guide surface and the second guide surface form a sheet discharge passage for guiding the sheet to the sheet discharge tray on the upper surface of the main body. In addition, by displacing the paper discharge path switching member in the other direction, a paper discharge passage for guiding the paper to the side of the main body can be formed. Even in a state in which the discharge mode is normally discharged to one side, the operation mode is operated to swivel the discharge path switching member to quickly switch to the discharge mode on the upper surface of the main body. You can Along with this, the shape of the paper discharge tray can be simplified and the cost can be reduced.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. Reference numeral 1 denotes a main body, and a printing mechanism 2 is built in the main body 1. This printing mechanism 2 scans the charged portion of the photoconductor 3 with a photoconductor 3 which is rotatably held, a charger 4 which applies a charge to the photoconductor 3 to charge it, and optical information corresponding to a print signal. To expose an electrostatic latent image, a developing unit 6 for developing the electrostatic latent image on the photoconductor 3, and a transfer charger 7 for transferring the developed image on the photoconductor 3 to a sheet.
A separation charger 8 for applying an electric charge to the paper to separate the transferred paper from the photoconductor 3, a cleaning unit 9 for cleaning the photoconductor 3, a static elimination lamp 10 for eliminating the electric charge of the photoconductor 3, A fixing unit 11 that applies heat and pressure to the sheet that has passed through the transfer charger 7 to fix the transferred image on the sheet.
And consists of. In addition, a paper feed unit 1 that pulls out paper in a paper feed cassette 12 by a paper feed roller 13 on one side of the main body 1.
4 is provided, and the paper feeding unit 14 and the transfer charger 7 are provided.
A registration roller 15 is rotatably provided between and.

Next, on the upper surface of the main body 1, there is formed a paper discharge tray 17 whose one end is located below the paper discharge port 16. Further, on the other side of the main body 1, there is provided a first guide surface 18 which is curved in a U shape from the fixing portion 11 toward the paper discharge port 16, and a predetermined space is provided on an outer periphery of an upper portion of the first guide surface 18. Facing each other, a pair of discharge rollers 20 and 21 pressed against each other near the fixing portion 11, and a pair of discharge rollers 22 pressed against each other near the discharge port 16. ，
And 23 are provided. Further, the main body 1 is provided with an internal tray 24 that inclines upward as it goes leftward from the vicinity of the lower portions of the paper discharge rollers 20 and 21. Further, the support shaft 2 located near the lower portion of the second guide surface 19
5, an arc-shaped sheet discharge path switching member 26 that is vertically rotatably held and faces the lower outer periphery of the first guide surface 18.
And a cam 28 which is brought into contact with a projecting piece 27 projecting from the base of the sheet discharge path switching member 26 and rotates about a support shaft 29. An operating portion 30 projecting to the outside of the main body 1 is integrally formed with the cam 28. Further, the main body 1 is provided with a paper discharge tray 32 whose inner surface is positioned on an extension surface of the internal tray 24 in a state of being held rotatably about a support shaft 31 and opened. The paper discharge tray 32 has a protrusion 33 on the inner surface thereof that faces the operation portion 30. A discharge port 34 is formed on the left side of the main body 1 to open one end of the internal tray 24.

In such a structure, the paper feed tray 12
The developed image formed on the photoconductor 3 is transferred to the upper surface of the paper fed from the transfer charger 7, and the transferred image is fixed by the fixing unit 11. Here, FIG.
As shown in (a), when the paper discharge tray 32 is opened and the operation unit 30 is pulled in the counterclockwise direction, the cam 28 pushes down the projecting piece 27, so that the transport path switching member 26 is rotated in the counterclockwise direction. The tip end thereof is displaced above the contact portion of the paper discharge rollers 20 and 21. Therefore, the paper 35 fixed by the fixing unit 11 is discharged toward the paper discharge tray 32 in a face-up state with the printing surface facing up. When the paper 35 is discharged to the side of the main body 1 in a face-up state, a usage pattern in which the paper 35 is supported by the paper discharge tray 32 and a usage pattern in which the paper discharge tray 32 is removed from the main body 1 are selected. You can When the paper discharge tray 32 is removed, the paper 35 is received by the internal tray 24. The large size paper 35 is discharged to the outside of the side of the main body 1 from the paper discharge port 34.

Next, when the discharge tray 32 is closed, the protrusion 3
2 presses the operation portion 30 to rotate the cam 28 in the clockwise direction, and as shown in FIG. 2B, the discharge path switching member 26 is released by the cam 28 and rotates in the clockwise direction by its own weight. To do. In this case, since the operation section 30 can be operated with the paper discharge tray 32 opened, the cam 28 can also be rotated clockwise. As a result, the lower end of the paper discharge path switching member 26 is displaced below the contact portion between the paper discharge rollers 20 and 21. Therefore, the paper 35 fixed by the fixing unit 11 passes between the first guide surface 18 and the paper discharge path switching member 26, and further between the first guide surface 18 and the second guide surface 19. Then, the sheet is discharged face-down with the printing surface facing downward, and is discharged to the discharge tray 17 on the upper surface of the main body 1. In the state shown in FIG. 2B, the discharge tray 32 is opened,
By operating the operation unit 30 to rotate the cam 28 counterclockwise, the state shown in FIG. 2A can be returned.

As described above, the first guide surface 1 is provided on the main body 1 side.
8 and a second guide surface 19 facing the upper outer circumference of the first guide surface 18, and the paper discharge path switching member 26 facing the lower outer circumference of the first guide surface 18, the timepiece. Paper discharge path switching member 26 and first guide surface 18 rotated in the direction
The second guide surface 19 and the second guide surface 19 can form a paper discharge path for guiding the paper 35 to the paper discharge tray 17 on the upper surface of the main body 1. Further, by rotating the paper discharge path switching member 26 in the counterclockwise direction, a paper discharge passage for guiding the paper 35 to the side of the main body 1 can be formed. Therefore, even in a state in which the discharge tray 32 is removed and the paper 35 is discharged to the side of the main body 1, the operation unit 30 is operated to swivel the discharge path switching member 32 so that the discharge path switching member 32 is swung quickly. It is possible to switch to a usage mode in which the paper 35 is discharged to the paper discharge tray 17 on the upper surface of the main body 1. Accordingly, it is not necessary to form a guide portion for guiding the paper 35 to the paper discharge tray 17 in the paper discharge tray 32, and the shape can be simplified and the cost can be reduced.

[0013]

According to the present invention, a main body having a built-in printing mechanism, a paper feed portion for feeding paper to the printing mechanism, a paper discharge receiver formed on the upper surface of the main body, and an end portion of the printing mechanism. Is fixedly provided on the main body so as to face a first guide surface that is curved in a substantially U shape toward the sheet receiving tray and an outer peripheral surface of an upper portion of the first guide surface at a predetermined interval. A second guide surface, a paper discharge tray rotatably and detachably held on the first guide surface side of the main body, and a support shaft arranged near a lower portion of the second guide surface. A sheet discharge path switching member that is rotatably held in the vertical direction and is arranged to face the lower periphery of the first guide surface, and an operation unit that is provided outside the main body and is connected to the sheet discharge path switching member. Since it is constituted by, the main body side has a first guide surface and a first guide surface facing the upper outer periphery of the first guide surface. Is provided, and the discharge path switching member faces the outer periphery of the lower part of the first guide surface. Therefore, the discharge path switching member displaced in one direction, the first guide surface, and the second guide surface. The guide surface can form a paper discharge path for guiding the paper to the paper discharge tray on the upper surface of the main body, and the paper can be guided to the side of the main body by displacing the paper discharge path switching member in the other direction. Since the paper discharge passage can be formed, therefore, even in a state where the paper discharge tray is removed and the paper is discharged to the side of the main body, the operation section is operated to rotate the paper discharge path switching member. By doing so, it is possible to quickly switch to a usage mode in which the paper is discharged to the paper discharge receiver on the upper surface of the main body, and along with this, the shape of the paper discharge tray can be simplified and cost reduction can be achieved. Have.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view showing an embodiment of the present invention.

FIG. 2 is a partial vertical cross-sectional front view showing the operation of a paper discharge tray and a paper discharge path switching member.

FIG. 3 is a partial vertical front view showing a conventional example.

FIG. 4 is a partial vertical front view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 2 Printing mechanism 14 Paper feed section 17 Paper ejection tray 18 First guide surface 19 Second guide surface 25 Spindle 26 Paper ejection path switching member 30 Operation section 32 Paper ejection tray

Claims (1)

Claim: What is claimed is: 1. A main body having a built-in printing mechanism, a paper feed section for feeding paper to the printing mechanism, a paper ejection receiver formed on an upper surface of the main body, and a printing mechanism of the printing mechanism. A first guide surface that is curved in a substantially U-shape from an end portion toward the paper discharge receiver and an upper outer peripheral surface of the first guide surface are fixedly provided on the main body so as to face each other with a predetermined gap. Second guide surface, a discharge tray rotatably and detachably held on the first guide surface side of the main body, and a support shaft arranged near the lower portion of the second guide surface. A discharge path switching member that is rotatably held up and down and is disposed to face the lower outer periphery of the first guide surface, and is connected to the discharge path switching member that is provided outside the main body. A paper discharge device for a printing device, which comprises an operation unit.