JPH0859050A - Picture image recording device - Google Patents

Abstract

PURPOSE: To provide a paper-sheet pressing member which does not obstract the taking- out of a recorded paper sheet from a paper-discharging stack part on an upper body in such an ordinary state that the upper part has been closed, and in which even if the upper body has been widely opened, the recorded paper sheet does not fall dawn. CONSTITUTION: A device body is provided with an upper body, and a lower body; and the upper body is made vertically movable with regard to the lower body. In the inside of the device body, both a movement converting mechanism 29 for converting the open/close movement of the upper body into a linear motion, and an elastic pressing member 36 which transmits the movement converted by the movement converting mechanism 29 for carrying out linear movement, and which is housed inside the device body when the upper body is closed, and which is projected from the device body when the upper body is opened for pressing the recorded paper sheet on a paper- discharging stack. When the upper body is opened, the movement converting member 29 converts the opening movement into a linear motion and transmits it to the elastic pressing member 36, so that the elastic pressing member 36 is projected from the device body and thereby the recorded paper sheet on the paper-discharging stack part is pressedly held. When the upper body is closed, the elastic pressing member 36 is housed inside the device body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a copying machine, printer,
The present invention relates to an image recording device such as a facsimile that records on paper or the like by copying, printing, transferring, or the like. Specifically, of these, the main body of the device is provided with an upper main body and a lower main body, and the upper main body can be opened and closed vertically with respect to the lower main body, and it is stacked in the paper discharge stack section on the upper main body to discharge the recorded paper. Regarding what you do.

[0002]

2. Description of the Related Art Conventionally, for example, in some printers, FIG.
As shown in FIG. 2, the apparatus main body 1 is provided with an upper main body 2 and a lower main body 3, and the upper main body 2 can be freely opened and closed with respect to the lower main body 3, and the upper main body 2 is stacked on a paper discharge stack portion 2 a. Then, the recorded sheet P is ejected. In such a printer, for example, at the time of jam processing, the paper output stack unit 2
When the upper main body 2 is opened with respect to the lower main body 3 with the recorded paper P remaining on the sheet a, as shown in FIG.
There was a problem that the recorded paper P on a dropped.

Therefore, in order to solve such a problem,
Among conventional printers and copiers, for example, FIG.
As shown in FIG. 6, a paper stacking unit 2a is provided with a fall prevention member 2b for covering the stacking unit 2a (Shokai Sho 61-200858).
As shown in FIG. 12, when the document discharge tray 4 is normally closed, it is separated from the paper (original) P against the biasing member 5 in the normal state, and when the document discharge tray 4 is opened, the paper is pushed by the biasing member 5. A device provided with a paper pressing member 6 for pressing P (actual flat plate 1-109063
As shown in FIG. 13, it is provided with a stopper member 7 that protrudes to the paper discharge stack portion 2a when the upper body 2 is opened and is retracted at the normal time when the upper body 2 is closed (actual opening 1-12825).
No. 3), etc.

In the above, when the upper main body 2 is opened with respect to the lower main body 3, the recorded paper P is supported by the fall prevention member 2b and prevented from falling. Further, in the above-mentioned one, when the document discharge tray 4 is opened, the paper P is held by the paper pressing member 6. Further, in the above-mentioned one, when the upper main body 2 is opened with respect to the lower main body 3, the stopper member 7 is projected to the paper discharge stack portion 2a, and one side of the recorded paper P is abutted to the stopper member 7. It has been prevented from falling from the discharge stack portion 2a.

[0005]

However, among the conventional copying machines as described above and in the above-mentioned copying machines, when the paper P is taken out from the paper discharge stack portion 2a or the document discharge tray 4, the drop prevention member 2b or There is a problem that the paper pressing member 6 gets in the way. Further, in the above-mentioned one, when the opening angle of the upper main body 2 becomes large, the paper discharge stack portion 2
There is a problem that the recorded paper P easily falls from a.

Therefore, an object of the present invention is to open the upper main body widely in such an image recording apparatus without being a hindrance when taking out the recorded paper from the paper discharge stack section in the normal state when the upper main body is closed. Is to provide a paper retainer that prevents recorded paper from falling.

[0007]

Therefore, according to the first aspect, the apparatus main body 10 is provided with the upper main body 10b and the lower main body 10a and the lower main body 10a is provided with respect to the lower main body 10a. In the image recording apparatus that allows the upper main body 10b to be opened and closed vertically and is stacked on the paper discharge stack portion 27 of the upper main body 10b to discharge the recorded paper P, the opening / closing motion of the upper main body 10b is converted into a linear motion. The motion converting mechanism 29 and the motion converted by the motion converting mechanism 29 are moved to move linearly. When the upper main body 10b is closed, the upper main body 10b is housed in the device main body 10 and when the upper main body 10b is opened, the device main body 10 is opened. And an elastic pressing member 36 that projects from and presses the recorded paper P on the paper discharge stack unit 27.

According to a second aspect of the present invention, for example, as in the following illustrated embodiment, in the image recording apparatus of the first aspect, the motion converting mechanism 29 is rotated by the opening / closing motion of the upper main body 10b. The rotating member 34, the flexible sheet material 35 having one end side wound around the rotating member 34 and the elastic pressing member 36 attached to the other end side, and the rotating member 34.
And an urging member 37 for urging the urging member 37 in the pull-out direction.

According to a third aspect of the present invention, for example, as in the following illustrated embodiment, in the image recording apparatus according to the second aspect, another member such as a tooth of the gear 33 is coaxial with the rotating member 34. By engaging with the teeth of the upper body 10b,
It is characterized in that it is provided with a gear 32 that rotates based on the opening and closing movement of the.

According to a fourth aspect of the present invention, the image recording apparatus according to the first aspect is characterized in that the tip 36a of the elastic pressing member 36 is bent upward as in the following illustrated embodiment. To do.

According to a fifth aspect of the present invention, for example, as in the following illustrated embodiment, in the image recording apparatus of the first aspect, the elastic pressing member 36 is made of a conductive material to be grounded, while the upper portion is formed. When the main body 10b is closed and the elastic pressing member 36 is housed in the apparatus main body 10, the elastic pressing member 36 is held at a position where it comes into contact with the recorded paper P discharged to the paper discharge stack section 27. It is characterized by

[0012]

In the present invention, the elastic pressing member 36 is housed in the apparatus body 10 in the normal state in which the upper body 10b is closed. Then, for example, when removing jam, the upper body 1
When 0b is opened, the opening movement is converted into a linear movement by the movement conversion mechanism 29 and transmitted to the elastic pressing member 36, and the elastic pressing member 36 is linearly moved and protrudes from the apparatus main body 10 to thereby discharge the paper stack portion. The 27 recorded sheets P are pressed. After the jam processing, when the upper body 10b is closed, the closing movement is converted into a linear movement by the movement converting mechanism 29 and transmitted to the elastic pressing member 36, and the elastic pressing member 36 is linearly moved to move the apparatus main body 10b. Store inside.

According to the second aspect, the upper main body 10b is provided.
When opened, the rotating member 34 is rotated to release the winding of the flexible sheet 35, and the flexible sheet 35 is urged by the biasing member 37.
At the same time, the elastic pressing member 36 is linearly moved and protrudes from the apparatus main body 10. On the other hand, when the upper body 10b is closed, the rotating member 34 is rotated to wind the flexible sheet 35 against the biasing member 37, and the elastic pressing member 36 is linearly moved to move the inside of the apparatus main body 10 inside. To store.

According to the third aspect, the upper main body 10b
When opening and closing, the gear 32 is rotated, and at the same time, the rotating member 3
Rotate 4.

According to the fourth aspect of the present invention, when the recorded paper P is pressed by the elastic pressing member 36, the lower surface of the leading end 36a thereof contacts the recorded paper P.

According to the fifth aspect of the present invention, when the recorded paper P is discharged to the paper discharge stack section 27, the elastic press member 36 is contacted to discharge the recorded paper P.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 6 is a schematic configuration diagram of the entire internal mechanism of a laser printer which is an embodiment of the present invention.

Reference numeral 10 in the figure denotes the apparatus main body. The device body 10 is separated at the position of the chain line a to form the lower body 1
0a and an upper main body 10b, and the upper main body 10b can be freely opened and closed centering on a rotary shaft 30 described later on the lower main body 10a. A belt-shaped photoconductor 11 is provided in the apparatus main body 10 substantially at the center. Around the photoconductor 11, a charging device 12, a developing device 13, a transfer device 14, and a cleaning device 15 are arranged in the driving direction shown by the arrow in the figure. An optical writing device 16 is arranged above the charging device 12 and the cleaning device 15, and a paper feeding cassette 17 accommodating the paper P is arranged below the transfer device 14. The photoconductor 11 and the cleaning device 15 are unitized to form a photoconductor unit 18, and the photoconductor unit 18 is connected to the upper body 1 described above.
0b is replaceable.

Then, the paper feed roller 20 on the lower side of the drawing is rotated to send the paper P out of the paper feeding cassette 17 in the direction of arrow A in the drawing, and the paper P is exposed by the registration roller pair 21 at a timing. It is conveyed to the lower side of the body 11.

On the other hand, the photoconductor 11 is driven in the clockwise direction indicated by the arrow, and at that time, the surface thereof is uniformly charged by the charger 12, and the laser beam from the optical writer 16 is irradiated to the photoconductor 1.
An electrostatic latent image is formed on 1. This latent image is visualized by toner when passing through the position of the developing device 13. Then, the visible image is the paper P conveyed to the lower side of the photoconductor 11.
The image is transferred by the transfer device 14 onto the upper surface of the. Then, the sheet P after the image transfer is guided by the transport guide 22 and is transported to the fixing device 23, and the transfer image is fixed by the fixing device 23. Then, the paper P that has left the fixing device 23 is further discharged by the paper discharge roller 24.
The sheet is conveyed by, and discharged in the direction of arrow B in the drawing to be stacked on the discharge tray 25, or discharged from between the discharge rollers 26 in the direction of C and stacked on the discharge stack portion 27 on the upper main body 10b.

On the other hand, after the image transfer, the photoconductor 11 is cleaned by the cleaning device 15 to remove the residual toner, and then the static eliminator 2 is used.
Remove electricity at 8.

By the way, the laser printer described above is provided with a motion converting mechanism 29 for converting the opening / closing motion of the upper body 10b into a linear motion, as shown in FIG. The motion converting mechanism 29 is provided with a shaft 31 in parallel with a rotating shaft 30, which serves as a center when the upper body 10b is opened and closed. Shaft 31
Is provided by supporting both ends between the opposite side plates of the upper body 10a and bridging them between them, and fixing the gear 32 to one end side thereof. The gear 32 meshes with another gear 33 fixed to the rotating shaft 30. A rotating member 34 is fixedly provided at the center of the shaft 31. The rotating member 34 is a roller shape having flanges 34a at both ends. One end side of the flexible sheet 35 is wound around the rotating member 34. The flexible sheet 35 is an elongated shape made of cloth or plastic, and the other end side thereof is the elastic pressing member 3
It is attached to the base end of 6. The elastic pressing member 36 is
It is formed in an elongated shape, the front end side is extended in the paper discharge direction of the recorded paper P, and one end of the biasing member 37 is hooked on the base end side. The urging member 37 uses a coil spring and hangs the other end at an appropriate position in the upper body 10a to urge the flexible sheet 35 from the rotating member 34 in the pulling direction.

Then, in the normal state in which the upper body 10b is closed as shown in FIG. 6, the flexible sheet 35 is wound around the rotating member 34 against the biasing member 37 as shown in FIG. Then, the elastic pressing member 36 is housed in the apparatus body 10. It should be noted that when the elastic pressing member 36 is housed, the tip 36a is directed toward the paper discharge direction by contacting it with a guide member (not shown).

Therefore, for example, when the upper body 10b is opened in the clockwise direction as shown in FIG. 4 about the rotating shaft 30 during the jam processing, the gear 32 is indicated by the opening movement of the upper body 10b. It revolves around the rotating shaft 30 in the counterclockwise direction while rotating around the rotating shaft 30, and at the same time, the rotating member 34 is rotated in the same direction to release the winding of the flexible sheet 35. Then, the flexible sheet 35 is pulled out by the urging force of the urging member 37, and the elastic pressing member 36 is linearly moved to project from the apparatus main body 10 in the paper discharge direction, and the state shown in FIG. 3 is obtained. At that time, the elastic pressing member 36 is guided by a guide member (not shown). Then, when the upper main body 10b is completely opened, the state shown in FIG. 5 is obtained, and the recorded paper P on the paper discharge stack portion 27 is pressed by the tip 36a of the elastic pressing member 36.

After the jam processing, when the upper body 10b is closed from the state shown in FIG. 4, the gear 32 is rotated clockwise in FIG. 5 based on the closing movement of the upper body 10b, and at the same time, the rotating member 34 is moved. It also rotates clockwise. Then, the flexible sheet 35 is wound around the rotating member 34 against the biasing member 37, and the protruding elastic pressing member 36 is pulled into the apparatus main body 10. And the upper body 10
When b is completely closed, the elastic pressing member 36 is attached to the apparatus main body 1
It will be in the state shown in FIG.

In the illustrated embodiment described above, the elastic pressing member 36 presses the tip 36a of the elastic pressing member 36 against the recorded paper P. However, as shown in FIG. 7, the elastic pressing member 36 may be configured so that the tip 36a thereof is bent upward. The tip 36a of the elastic pressing member 36
Since the lower surface of the sheet is applied to the recorded paper P, the recorded paper P
Not hurt.

Further, the elastic pressing member 36 is made wide with a conductive material and is grounded by connecting to an unillustrated ground portion of the apparatus main body 10, while the upper main body 10b is closed and the apparatus main body 1 is closed.
When the elastic pressing member 36 is housed in 0, as shown in FIG. 8, the tip 36a of the elastic pressing member 36 is slightly projected from the apparatus main body 10 toward the paper ejection direction side and is ejected to the paper ejection stack 27. It is preferable to have a configuration in which it is held at a position in contact with the paper P.

When the recorded paper P is discharged to the paper discharge stack unit 27, the elastic press member 36 is brought into contact with the discharged paper P to eliminate the charge.

[0029]

As described above, according to the present invention, when the upper main body is opened, the elastic pressing member is projected from the main body of the apparatus to press the recorded paper, so that, for example, at the time of jam processing, the recorded paper is already recorded on the paper discharge stack. Even if the upper body is opened with the paper left, the recorded paper can be securely pressed so as not to drop. Further, when the upper main body is closed, the elastic pressing member is accommodated in the main body of the apparatus, so that the paper pressing does not become an obstacle when taking out the recorded paper from the paper discharge stack section.

According to the second aspect of the invention, when the upper body is closed, the flexible sheet is wound around the rotating member against the biasing member, so that the space occupied by the elastic pressing member is reduced. be able to.

According to the third aspect, when the upper body is opened and closed, the gear is rotated, and at the same time, the rotating member is rotated. Therefore, the opening and closing movement of the upper body can be rotated by a simple structure. It can be reliably transmitted to the member.

According to the fourth aspect, when the recorded sheet is pressed by the elastic pressing member, the lower surface of the tip of the elastic sheet is pressed against the recorded sheet, so that the recorded sheet can be prevented from being damaged.

According to the fifth aspect of the present invention, when the recorded paper is discharged to the paper discharge stack portion, the recorded paper is discharged by contact with the elastic pressing member. It is not necessary to provide it, and the cost can be reduced.

[Brief description of drawings]

FIG. 1 shows a laser printer according to an embodiment of the present invention,
FIG. 3 is a perspective view of a motion conversion mechanism that converts the opening / closing motion of the main body into a linear motion.

FIG. 2 is a state diagram of the motion converting mechanism in a normal state in which the upper body is closed.

FIG. 3 is a state diagram of the motion converting mechanism in the middle of opening the upper body.

FIG. 4 is an external perspective view of the entire laser printer when the upper main body is completely opened.

FIG. 5 is a state diagram of the motion conversion mechanism at that time.

FIG. 6 is a schematic configuration diagram of an entire internal mechanism of the laser printer.

FIG. 7 is a perspective view showing another example of an elastic pressing member provided in the motion conversion mechanism, in which a recorded sheet is pressed by the tip of the elastic pressing member.

FIG. 8 is an external perspective view of a laser printer according to another embodiment of the present invention.

FIG. 9 is a side view showing a state in which recorded sheets are stacked on a discharge stack section of an upper main body in a conventional printer.

FIG. 10 is a side view showing a state in which the upper main body is opened while leaving the recorded paper.

FIG. 11 is an external perspective view of another conventional printer.

FIG. 12 is a side view showing a state in which recorded sheets are stacked on a document discharge tray in another conventional copying machine.

FIG. 13 is a side view showing a state in which already-printed sheets are stacked on the sheet discharge stack section of the upper main body in still another conventional printer.

[Explanation of symbols]

 10 Device Main Body 10a Lower Main Body 10b Upper Main Body 27 Paper Ejection Stack Part 29 Motion Conversion Mechanism 32 Gear 34 Rotating Member 35 Flexible Sheet 36 Elastic Pressing Member 36a Tip 37 Energizing Member

Claims (5)

[Claims] 1. An apparatus main body is provided with an upper main body and a lower main body, and the upper main body can be opened and closed vertically with respect to the lower main body, and the recorded sheets are stacked on a paper discharge stack section on the upper main body. In an image recording apparatus for discharging, a motion converting mechanism that converts the opening / closing motion of the upper body into a linear motion, and the motion converted by the motion converting mechanism is transmitted to move linearly, and when the upper body is closed, An image recording apparatus, comprising: an elastic pressing member that is housed in the apparatus main body and, when opened, protrudes from the apparatus main body and presses the recorded sheets on the discharge stack section. 2. A rotary member that is rotated by the opening / closing motion of the upper body, a flexible sheet member having one end side wound around the motion converting mechanism and the elastic pressing member attached to the other end side, The image recording apparatus according to claim 1, further comprising a biasing member that biases the rotating member from the rotating member in a pull-out direction. 3. The image recording apparatus according to claim 2, further comprising a gear that is coaxial with the rotating member and that rotates based on an opening / closing motion of the upper body by meshing with teeth of another member. 4. The image recording apparatus according to claim 1, wherein a tip of the elastic pressing member is bent upward. 5. The elastic pressing member is made of a conductive material to be grounded while the upper body is closed and the elastic pressing member is housed in the apparatus main body. The image recording apparatus according to claim 1, wherein the image recording apparatus is held at a position where it comes into contact with a recorded sheet discharged to the sheet.