JPH06329320A - Image recording apparatus - Google Patents

Abstract

PURPOSE:To easily visually confirm the recording condition to a sheet from the outside and then stack the sheets in a simple constitution. CONSTITUTION:A hook member 13 is provided in such a manner as to freely rotate on a fitting shaft 13a in a sheet discharge position where a sheet discharge port is provided of an apparatus main body 10. A latch part 13b is formed on the forward end of the hook member 13. The leading end of a discharged sheet S is caught by the latch part 13b, and as the discharged sheet S is discharged in such a caught state, the hook member 13 is rotated to turn up the leading end of the sheet S toward the front 10a side, and after that, the hook member 13 is rotated until the caught state is released.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is applicable to laser printers, copying machines, facsimiles, printing machines, etc.
The present invention relates to an image recording device that records on a sheet by printing or the like.

[0002]

2. Description of the Related Art In a laser printer, for example, when sheets after recording are stacked face down, they are stacked in page order, so there is an advantage that it is not necessary to switch the page order after picking them up from the sheet mounting surface. On the other hand, since the recording surface is facing down, it is difficult to check the recording status on the sheet until it is picked up from the sheet mounting surface, setting mistakes during operation such as enlargement / reduction / font selection, or white spots in the image.・ There is a disadvantage that it takes time to understand poor image quality such as insufficient density and scumming.

Therefore, in a conventional image recording apparatus, as shown in FIG. 6, when the recorded sheet S is discharged from the sheet discharge port 1a of the apparatus main body 1, both sides of the width of the recorded sheet S are left and right. The guide member 3 is inserted into the guide member 3 and abutted against the tip 3a thereof, and the guide member 3 is rotated counterclockwise around the shaft 4 by the waist strength of the seat S to the visual recognition position shown in FIG.
There is one in which the recording surface can be visually recognized from the front as shown by an arrow a.

By the way, in such a conventional image recording apparatus, after visual recognition, it is necessary to eject both sides of the width of the recorded sheet S from the left and right guide members 3 and discharge them onto the sheet mounting surface 2.

Therefore, in the above-described conventional image recording apparatus, as shown in FIG. 8, cams 6 and 7 are provided between the guide member 3 and the bearing 5, and the coil spring 8 mounted on the shaft 4 allows the cam 6 to move. Is pressed against the cam 7.
Then, when the guide member 3 is rotated to the visible position,
By the action of the cams 6 and 7, the guide member 3 is moved from the position indicated by the chain double-dashed line in FIG. 9 to the position indicated by the solid line, and the distance between the guide members 3 is expanded from 1 in FIG. 8 to L in FIG. Both sides were taken out from inside the guide member 3, dropped on the sheet mounting surface 2, and were stacked face down.

[0006]

However, in the conventional image recording apparatus, since the cams 6 and 7 are provided between the guide member 3 and the bearing 5 and the coil spring 8 presses them, the structure is complicated. There was a problem that the number of parts increased and the cost increased.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to make an image recording apparatus for ejecting a recorded sheet face down on a sheet mounting surface so that the recording state on the sheet can be easily visually recognized from the outside, and then a simple structure is provided. Is to be stackable with.

[0008]

Therefore, according to the first aspect of the present invention, for example, as shown in the following embodiments, the sheet mounting surface 12 of the apparatus main body 10 is moved from the rear surface 10b side to the front surface 10a side. In the image recording apparatus for ejecting the recorded sheet S face down,
The hook member 13 is provided at the sheet discharging position, and the hooking portion 13b for hooking the tip of the discharged sheet S is formed at the tip of the hook member 13, and the discharged sheet S is hooked on the hooking portion 13b. As it is further discharged, first, the tip is turned up toward the front surface 10a side, and then the hook member 13 can be rotated until the hooked state is released.

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 tip of the hook member 13 is gravitationally applied to the sheet mounting surface 12 of the sheet mounting surface 12. It is characterized by imparting a turning habit of dropping upward.

[0010]

In the present invention, when the recorded sheet S is discharged, the leading end of the sheet S is hooked by the hook portion 13 of the hook member 13.
As the discharge sheet S is discharged by being caught on b,
The hook member 13 is rotated by the waist of the sheet S, and the leading end of the sheet S is turned up toward the front surface 10a so that the recording surface of the discharged sheet S can be visually recognized from the outside.
Then, as the discharged sheet S is further discharged, the leading end of the sheet S is disengaged from the hooking portion 13b, the hooked state is released, and the discharged sheet S is dropped onto the sheet mounting surface 12 to stack the discharged sheet S face down. To do.

According to the second aspect, the hooking portion 13b is provided.
When the hooked state of the leading edge of the sheet S is released, the leading edge of the hook member 13 falls onto the sheet mounting surface 12 due to gravity.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an overall schematic configuration of a laser printer which is an embodiment of the present invention.

Reference numeral 10 in the figure denotes the apparatus main body,
The right side in the drawing is the front surface 10a, and the left side is the back surface 10b.
A sheet placing surface 12 is provided on an upper surface 10c of the apparatus main body 10, and a sheet discharge port 11 for discharging a recorded sheet is provided toward the front surface 10a toward the rear surface 10b side as described later. A hook member 13 is provided at the sheet discharge position where the sheet discharge port 11 is located.

As shown in FIG. 2, the hook member 13 has a slightly elongated lever shape, and the mounting shaft 13a is projected to both sides of the base end, and a hooking portion 13b for hooking the front end of the sheet is provided at the front end. The hooking portion 13b has a slightly wide plate shape, and its tip is bent to one side by 90 degrees or more to have a cross section of approximately L.
Form in a letter shape. Then, the hook member 13 rotatably attaches the attachment shaft 13a to the attachment portion 14 of the paper discharge portion 10d shown in FIG. 1 with the engagement portion 13b facing downward, and the attachment portion 13b is attached to the sheet by the gravity. It is provided on the surface 12.

On the other hand, in the main body 10 of the apparatus, a photoconductor 17 is arranged substantially in the center, a transfer device 18 is arranged below the photoconductor 17, and a fixing device 19 is arranged on the left side of the drawing. A paper feed cassette 20 is detachably attached to the front surface 10a of the apparatus body 10.

When recording on the sheet S,
As shown in FIG. 1, the sheet S in the paper feed cassette 20 is sent out by the rotation of the paper feed roller 21 and abuts against the registration roller pair 22, and then the registration roller pair 22
Then, the sheet S is conveyed to the lower side of the photoconductor 17 at a timing. Then, the image formed on the surface of the photoconductor 17 by a charging device, an optical writing device, a developing device or the like (not shown) is transferred onto the upper surface of the sheet S by the transfer device 18. After the transfer, the sheet S is guided by a conveyance guide (not shown) to fix the fixing device 19
To the heating roller 19a and the pressure roller 19 there.
The transferred image on the sheet S is fixed by b.

Then, the sheet S exiting the fixing device 19 is
The paper passes through the conveyance guides 23, and the paper output roller 24 discharges the paper 11
Discharge from. At that time, the tip of the sheet is hooked with the hook member 13.
When the discharged sheet S is further discharged, the hook member 13 is rotated by the waist of the sheet S, and is discharged while sliding along the hook member 13 and hooked on the hook portion 13b. Then, as shown in FIG. 3, the leading edge of the sheet S is turned up toward the front side. Then, the recording surface of the discharge sheet S is made visible from the outside as shown by the arrow. Then, as the discharged sheet S is further discharged, when the leading edge of the sheet S comes off from the hooking portion 13b, the sheet S falls and is stacked face down on the sheet mounting surface 12 as shown in FIG. To do. At the same time, the hook 1
3b falls and rides on the stack sheet S, and the hook S 13b presses the sheet S from above.

In the illustrated embodiment described above, the hook member 13 is formed of an elongated plate member. However, as shown in FIG. 5, for example, the hook member 13 may be formed by bending a thin rod member.

[0019]

Therefore, according to the present invention, when a recorded sheet is discharged, the leading end of the sheet is hooked on the hooking portion of the hook member, and the hook member is rotated as the discharged sheet is discharged. Flip the tip of the sheet toward the front side, and then as it is further discharged,
Since the leading edge of the sheet comes off from the latching portion and falls onto the sheet mounting surface, a simple structure in which the hook member having the latching portion is rotatably installed is sufficient, and the number of parts is reduced to reduce the cost. You can

According to the second aspect of the present invention, when the leading end of the discharged sheet comes off from the hooked portion of the hook member, the hooked portion falls due to gravity onto the sheet mounting surface. The stack sheet can be pressed from above by the hook portion, and for example, it is possible to prevent the stack sheet from being disturbed by the influence of the wind of the air conditioner installed nearby.

[Brief description of drawings]

FIG. 1 shows a laser printer according to an embodiment of the present invention,
It is the whole schematic block diagram.

FIG. 2 is a perspective view of a hook member included in the laser printer.

FIG. 3 is a state diagram of the laser printer showing a state in which the hook member is rotated by a discharge sheet and the recording surface of the sheet is confirmed from the outside.

FIG. 4 is a state diagram of the laser printer showing a state in which, after stacking the discharged sheets, the hooked member holds the stacked discharged sheets.

FIG. 5 is a perspective view showing another example of a hook member included in the laser printer.

FIG. 6 is a schematic configuration diagram of a conventional laser printer.

FIG. 7 is a state diagram of the laser printer showing a state in which a guide member provided in the laser printer is rotated by a discharge sheet and the recording surface of the sheet is confirmed from the outside.

8 is an enlarged cross-sectional view of a joint between the guide member and the bearing in the state of FIG.

9 is an enlarged cross-sectional view of the joint between the guide member and the bearing in the state of FIG.

[Explanation of symbols]

 10 Device Main Body 10a Front of Device Main Body 10b Rear of Device Main Body 12 Seat Placement Surface 13 Hook Member 13b Hooking Part S Seat

Claims (2)

[Claims] 1. An image recording apparatus for ejecting a recorded sheet in a face-down state from a back side to a front side on a sheet mounting surface of an apparatus body, wherein a hook member is provided at a sheet ejection position of the apparatus body. , A hooking portion for hooking the tip of the discharge sheet is formed at the tip of the hook member, and as the discharge sheet is further discharged while being hooked on the hooking portion, the tip is first turned to the front side. An image recording device in which the hook member is rotatable until it is flipped up and then released from the hooked state. 2. The image recording apparatus according to claim 1, wherein the hook member is provided with a turning habit of dropping the tip of the hook member onto the sheet mounting surface by gravity.