JPH09110263A - Ink jet recorder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ink jet recorder which can reliably discharge a tip rounded sheet without reducing sheet housing capacity. SOLUTION: A guide member 11 is rotatably arranged in a sheet housing part 6 to successively house a sheet 7 on which an image is formed by a recording means 1 and which is discharged by a paper discharge means 5, and the sheet 7 discharged by this guide member 11 is guided to the sheet housing part 6. When paper discharge is started, the guide member 11 rotates in the paper discharge mean direction by being pressed by a pressing member 13, and guides the tip rounded sheet 7 to the sheet housing part 6 without hitching it. When the sheet 7 is successively housed in the sheet housing part 6, it rotates in the direction for separating from the paper discharge means 5 against pressing force of the pressing member 11 by a load of the sheet 7, and reduction in sheet housing capacity is prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink jet recording apparatus which is an output device of a personal computer or the like, and more particularly to a structure of a sheet storage section for storing a sheet on which an image such as data is recorded.

[0002]

2. Description of the Related Art Conventionally, some personal computers and the like use an inkjet recording device as an output device. Here, this ink jet recording apparatus includes, for example, as shown in FIG. 6, a recording head 1 which is a recording unit that ejects ink onto a sheet 7 to record an image, and a conveyance roller 2.
A sheet discharging roller pair 5 which is a sheet discharging unit configured to discharge the image-formed sheet and a sheet storing unit configured to sequentially store the discharged sheet 7. And a stack portion 6.

In the ink jet recording apparatus having such a structure, data such as an image is recorded on the sheet 7 by moving the recording head 1 in the sub scanning direction by a carriage (not shown), and the sheet 7 on which the data is recorded. Are discharged upward by the driving force of the paper discharge roller 3 and are stacked (stored) in the stack section 6.

The stack section 6 is composed of a sheet stacking section 6a on which the sheets 7 are stacked and a sheet holding section 6b which contacts the lower end of the sheet 7 and holds the sheet 7. Further, in the figure, 8 is a platen which constitutes a printing surface provided in a direction opposite to the printing side of the sheet 7, and the sheet holding section 6 b of the stack section 6 is arranged from the upper end of the platen 8 to the sheet discharge roller 3. Bent in the opposite direction,
Further, the sheet stacking portion 6a is formed so as to extend upward from the rear end of the sheet holding portion 6b.

[0005]

However, in such a conventional ink jet recording apparatus, when the sheets 7 are stacked on the stack portion 6, if the sheets 7 are paper,
The tip may be rounded as shown in FIG. 7 immediately after recording depending on the direction of the fibers and the recording duty. When the leading edge is rounded in this way, the leading edge is moved to the sheet stacking unit 6
There is a problem that the sheet 7 is not reliably discharged due to being caught in a.

In order to surely discharge the sheet 7,
For example, there may be a case in which a member for preventing the sheet 7 from curling is provided behind the paper discharge roller 3. However, in the case where such a curling preventing member is provided, the amount of the curling preventing member provided corresponds to that of the stack portion 6. Space becomes narrower, stack part 6
However, another problem that the sheet storage capacity of is reduced occurs.

Therefore, the present invention has been made in order to solve such a problem, and ink jet recording capable of reliably ejecting a sheet with a rounded leading end without reducing the sheet storage capacity. The purpose is to provide a device.

[0008]

SUMMARY OF THE INVENTION According to the present invention, recording means for ejecting ink onto a sheet to record an image, ejecting means for ejecting the image-formed sheet, and the ejected sheet are provided. In an ink jet recording apparatus provided with a sheet accommodating means for accommodating sequentially, a guide member that is rotatably provided in the sheet accommodating means and guides the discharged sheets to the sheet accommodating section, and presses the guide member And a pressing member for rotating in the direction of the sheet discharging means, the guide member is rotated in the direction of the sheet discharging means by the pressing member at the start of sheet discharging, and the sheet having the rounded leading end is stored in the sheet. While being guided to the means, when the sheets are sequentially stored in the sheet storage means, the sheets are rotated in a direction away from the sheet discharging means against the pressing force of the pressing member due to the load of the sheets. It is intended.

Further, the present invention is characterized in that the pressing member is a compression spring, and the compression spring is interposed between the sheet stacking portion of the sheet storage means and the guide member. .

Further, according to the present invention, in the sheet stacking portion of the sheet storing means, there is formed a depression in which the pressing member is pushed when the guide member is rotated against the pressing force of the pressing member. The member is a compression spring.

Based on the above construction, a guide member is rotatably provided on the sheet storing means for sequentially storing the sheets on which images are formed by the recording means and discharged by the paper discharging means, and the sheet is discharged by this guide member. The formed sheet is guided to the sheet storage means. Then, when the sheet discharge is started, the guide member is pressed by the pressing member and is rotated in the direction of the sheet discharge means, so that the sheet having a rounded leading end is guided to the sheet storage portion without being caught. Further, when the sheets are sequentially stored in the sheet storage portion, the load of the sheets rotates in the direction away from the sheet discharging means against the pressing force of the pressing member, so that the sheet storage capacity is not reduced.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a side view of a main part of a microcomputer equipped with an ink jet recording apparatus according to the present invention. In the figure, the same reference numerals as those in FIG. 6 indicate the same parts.

In the figure, 9 is a microcomputer main body,
The inkjet recording device 1 is provided inside the microcomputer body 9.
0 is provided.

Reference numeral 11 denotes a guide plate provided in the stack portion 6, and the guide plate 11 serves to discharge the sheet 7 at the time of discharging.
Are guided toward the sheet stacking portion 6a.
The guide plate 11 is rotatably attached to the sheet stacking unit 6a by pivotally supporting a shaft 12 provided at the upper end of the shaft on a bearing (not shown) provided in the sheet stacking unit 6a.

On the other hand, the guide plate 11 and the sheet stacking portion 6
A compression spring 13 is interposed between the guide plate 11 and the discharge roller 3 and is pressed by the compression spring 13.
It rotates so that the lower end is directed in the direction of. Then, by rotating in this way, at the time of paper ejection,
The sheet stacking portion 6a is securely held without catching the sheet 7.
It is possible to guide you to.

By the way, the sheets 7 are sequentially stacked on the stack portion 6 by being guided by the guide plate 11 in this way. However, when stacking a large number of sheets 7, the guide plates 11 do not get in the way. As the number of stored sheets increases, the guide plate 11 rotates in a direction away from the paper discharge roller 3 while compressing the compression spring 13 by the load of the sheet 7. By rotating the guide plate 11 in such a direction, it is possible to prevent the stack capacity of the stack portion 6 from becoming small even if the guide plate 11 is provided.

In this embodiment, the compression spring 13
One end of the guide plate 11 is fixed to a concave portion 14 formed in a portion of the sheet stacking portion 6a facing the guide plate 11.
When the paper is rotated in a direction away from the paper discharge roller 3, the compression spring 13 is pressed into the recess 14 while contracting. As the compression spring 13 is pushed into the recess 14 in this manner, the guide plate 11 is moved to the sheet stacking unit 6
It is possible to rotate to a position substantially parallel to a and prevent the stack capacity of the stack portion 6 from decreasing.

In the figure, reference numeral 15 is a guide rib for guiding the rear end portion of the discharged sheet 7 toward the guide plate 11.

Next, the sheet stacking operation of the ink jet recording apparatus thus constructed will be described.

Sheet 7 transported by transport roller 2
Is conveyed to the recording position and data is recorded by the recording head 1. At this time, the recording head 1 moves in the sub-scanning direction by the carriage to record the data, but when recording for one line is completed, the recording head 1 is again conveyed upward in the scanning direction by the conveying roller 2 and further 1 position at this position. Line recording is performed.

Then, this operation is repeated a predetermined number of times to finish the recording for one page of the sheet, but the sheet 7 after the recording is discharged to the stack portion 6 by the discharge roller pair 5.

By the way, when the sheet 7 is discharged to the stack portion 6 in this way, the front end of the sheet 7 may be rounded. In this case, the front end of the sheet 7 is discharged by the compression spring 13 as shown in FIG. It comes into contact with the guide plate 11 rotating in the direction of the roller 3. Here, when the leading end abuts on the guide plate 11 in this way, the sheet 7 is lifted in a curved state as shown in FIG. 3 without the leading end being largely rounded as in the conventional case (see FIG. 7). And is guided toward the sheet stacking portion 6a without being caught.

On the other hand, when the first sheets 7 are stacked in this way and then the sheets 7 are sequentially stacked, the guide plate 11 causes the compression spring 14 to move by the load of the stacked sheets 7 as shown in FIG. The sheet stacking unit 6 is gradually rotated in the direction away from the paper discharge roller 3 against the force of the sheet stacking unit 6
It comes to rotate to a position substantially parallel to a. Then, as the guide plate 11 gradually rotates in the direction away from the paper discharge roller 3 in this manner, a large number of sheets can be stacked in the stacking unit 6.

In the above description, the case where the sheet 7 is ejected upward has been described, but the present invention is not limited to this. For example, as shown in FIG. 5, the sheet ejection direction is lateral. It can even be applied.

[0026]

As described above, according to the present invention, a guide member is rotatably provided in the sheet storage portion, and when the paper discharge is started, the guide member is rotated in the direction of the paper discharge means by the pressing member. By moving the sheet, it is possible to reliably discharge the sheet having a rounded tip. Further, when the sheets are sequentially stored in the sheet storage portion, it is possible to prevent the sheet storage capacity from decreasing by rotating the guide member in the direction away from the sheet discharging means by the load of the sheets.

[Brief description of the drawings]

FIG. 1 is a side view of a main part of a microcomputer including an inkjet recording device according to the present invention.

FIG. 2 is a diagram showing a state when the inkjet recording apparatus starts discharging a sheet.

FIG. 3 is a diagram showing a state in which a discharged sheet is guided to a stack section by the guide plate.

FIG. 4 is a diagram showing a state in which the large number of sheets are stored in a stack portion.

FIG. 5 is a diagram showing another embodiment of the present invention.

FIG. 6 is a diagram showing a configuration of a conventional inkjet recording device.

FIG. 7 is a diagram showing a state when the conventional inkjet recording apparatus starts discharging a sheet.

[Explanation of symbols]

 1 Recording Head 5 Paper Ejection Roller Pair 6 Stack Part 7 Sheet 10 Inkjet Recording Device 11 Guide Plate 14 Compression Spring

Claims (3)

[Claims] 1. A recording unit configured to eject an ink onto a sheet to record an image, a sheet discharging unit configured to discharge the image-formed sheet, and a sheet storing unit configured to sequentially store the discharged sheet. In an inkjet recording apparatus provided with a guide member, which is rotatably provided in the sheet storage means and guides the discharged sheet to the sheet storage portion, and a direction of the sheet discharge means by pressing the guide member. And a guide member that rotates the guide member toward the sheet discharge means by the pressing member at the start of sheet discharge to guide the sheet having a rounded leading end to the sheet storage means, and sequentially An ink jet recording apparatus characterized in that, when a sheet is stored in the sheet storage means, the sheet is rotated in a direction away from the sheet discharge means against the pressing force of the pressing member due to the load of the sheet. . 2. The inkjet according to claim 1, wherein the pressing member is a compression spring, and the compression spring is interposed between the sheet stacking portion of the sheet storage means and the guide member. Recording device. 3. The sheet stacking portion of the sheet storage means is formed with a recess into which the pressing member is pushed when the guide member rotates against the pressing force of the pressing member. The inkjet recording apparatus according to claim 1.