JPH02100958A - Paper discharge device for recorder - Google Patents

Abstract

PURPOSE:To make a constitution simple, by housing a recording paper sheet from paper discharge rollers at a temporary maintaining means, and guide-leading its rear end to a reversing roller by means of the continuous rotation of paper discharge roller, and conducting a paper discharge onto a paper discharge tray with its surface downward. CONSTITUTION:A recording paper temporary maintaining means 10, a reversing roller 11, a reversing guide 14 and a paper discharge tray 15 are provided at the lower stream of a pair of paper discharge rollers 8, 9. And, a recording paper sheet which has passed paper discharge rollers 8, 9 with its surface upward, is housed at the recording paper sheet temporary maintaining means 10, and its read end is guide-led to the reversing roller 11 by means of the continuous rotation of the paper discharge roller 8, and a paper discharge is made onto the paper discharge tray 15 with its surface downward by means of the reversing roller 11 and the reversing guide 14 through a pair of paper discharge rollers 12, 13. Thus, owing to its surface downward, a forward/backward drive mechanism which rotates forward/backward paper discharge rollers, and a control mechanism are unnecessary, and recorded recording paper sheets can be discharged at a high speed with their surfaces downward one by one.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a paper discharge device for a recording device, and more specifically, it is suitable for discharging recording paper face down in a recording device using electrophotographic technology. The present invention relates to a paper ejecting device.

[Conventional technology]

Recording devices such as electronic copy machines, laser beam printers, etc. that utilize electrophotography technology fix a 1-toner image formed on a recording paper onto the surface of the recording paper using a fixing device such as a heated roller. After that, the paper is ejected by the paper ejection roller i-ray f-, 1
．． - It is configured to discharge. In general, this type of recording device uses a photosensitive drum as a primary recording medium for forming a single image by an electrophotographic process, and a recording paper, which is a secondary recording medium, passes under the photosensitive drum. The toner image is transferred to the side surface, and the recording paper on which the 1-toner image has been transferred is conveyed horizontally as it is, fixed by a fixing device such as a heat roller, and then discharged by a paper discharge roller. The recorded recording paper discharged onto the paper discharge tray is a so-called face-up discharge paper in which the image surface faces upward.

This face-up paper ejection method has the advantage of allowing you to immediately check the state of the recorded image on the ejected paper, but since the subsequent paper is stacked one after another, page alignment work is required afterward. There are drawbacks to doing so.

To this end, as described in Japanese Patent Application Laid-open No. 62-295867, a recording paper reversing device has been proposed which inverts the recorded recording paper and discharges it face down.

[Problem to be solved by the invention]

However, the conventional recording paper reversing device has the disadvantage that it is necessary to control the forward and reverse rotation of the paper ejection [1-ra] in order to eject -sheets of recording paper, and the configuration of the drive mechanism and control mechanism becomes complicated. be.

However, while the paper discharge roller is rotating in the reverse direction, the interval between the recording sheets must be increased so that the next recording paper does not reach this paper discharge roller, which has the disadvantage of slowing down the recording speed.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a recording paper ejecting device that has a simple configuration and is capable of ejecting recorded recording paper face-down at high speed.

[Means to solve the problem]

In order to achieve this object, the present invention provides a paper discharging device of a recording apparatus having a paper discharging roller that continuously rotates in one direction and discharges recorded recording paper one after another. A recording paper temporary holding means, a reversing roller, a reversing guide, an ID, and a paper ejection tray are provided, and the recording paper that has passed through the paper ejection roller in a face-up manner is stored in the recording paper temporary holding means, and the rear end is stored in the recording paper temporary holding means. The paper is characterized in that the paper is guided to the reversing roller by continuous rotation of the paper ejection roller 2, and the paper is ejected face down onto the paper ejection tonneau by the reversing roller and the reversing guide.

[Effect]

The paper ejection roller guides and guides the trailing edge of the recording paper that has passed through the paper ejection roller to a reversing roller by continuous rotation of the paper ejection roller, and ejects the paper face down onto the paper ejection tray by the reversing roller and the reversing guide. Since the recording paper is printed face-down, there is no need for a forward/reverse drive mechanism and a control mechanism for rotating the paper discharge roller in the forward and reverse directions for face-down, and recorded recording paper can be discharged face-down one after another at high speed.

〔Example〕

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

FIG. 12 is a longitudinal sectional side view of a fixing device and a paper ejecting device section of a laser beam printer using electrophotographic technology.

Rubber feet 2 are provided on the bottom surface of the printer case 1. A recording paper 30 with a toner image 30a attached thereto is carried by a conveying device (not shown) into a heat fixing device equipped with a bee roller 3, a pressure roller 4, and a peeling claw 5 that rotate continuously in the directions of arrows a and b. , the toner image 30a is formed by the recording paper 30 passing between the heat roller 3 and the pressure roller 4.
is thermally fixed on the recording paper 30. The peeling claw 5 prevents the recording paper 3o after fixing from being wrapped around the heat roller 3.

The guide 6.7 guides the fixed (recorded) recording paper 30 sent out from the thermal fixing device to the first paper discharge rollers 8,9.

The first paper ejection rollers 8 and 9 continuously rotate in the direction of arrow C, and are provided with an auxiliary member so that their outer ends are inclined upward at an angle of 15 degrees or more from the paper ejection port 1a formed in the printer case 1. The recorded recording paper 30 is discharged face up onto the paper discharge tray 10.

A driven roller-type reversing roller 11 that rotates in the direction of arrow d due to friction is provided below the first paper ejection roller 8, and downstream of the reversing roller 11, a reversing guide 14 and a second paper ejection roller 12,1- 3 is provided. The first paper ejection roller 8 carries out the auxiliary ejection so that the recording paper 30 that has passed through the paper ejection roller 8 face-up is brought into contact with the outer peripheral surface of the paper ejection roller 8 by the weight of the recording paper 30. The recording paper 3o is discharged onto the paper tray 10, and then the rear end of the recording paper 3o is guided between the paper discharge roller 8 and the reversing roller 11 by continuous rotation of the paper discharge roller 8. Then, the first paper ejection roller 8 and the reversing roller 11 pull back the recording paper 30 on the auxiliary paper ejection tray 10 from the rear end.

The reversing guide 14 reverses the recording paper 30 that has been pulled back from the auxiliary paper ejection tray 10 by the first paper ejection roller 8 and the reversing roller 11 and guides it to the second paper ejection rollers 12 and 13. The second paper discharge rollers 12 and 13 discharge the recorded recording paper 30 onto a paper discharge tray 15 face down.

As described above, the paper ejecting device of the recording apparatus according to the present invention has the first
By continuously rotating the paper ejection rollers 8 and 9 in the paper ejection direction, the recorded recording paper 30 sent out from the heat fixing device is sequentially ejected onto the auxiliary paper ejection 1-ray 10, and the trailing edge is successively removed. The paper is guided between the first paper ejection roller 8 and the reversing roller 11, and is pulled back by the paper ejection roller 8 and the reversing roller 11 to the reversing guide 14 and the second paper ejection roller 12. ．．
1.3 allows the paper to be ejected face down onto the paper ejection tray 15, so the recorded paper 3 can be ejected with a simple configuration.
0 can be discharged face down continuously at high speed.

In addition, the record 730 which is discharged onto the auxiliary paper discharge tray 10
Since this is a face-up view, the recording status can be visually checked.

Furthermore, the recording paper 3o that is fixed face-up by the heat fixing device curls upward in a concave shape, but the reversing guide 14
Since the recording paper 30 is curved in a convex shape, this curl can be removed.

Next, another embodiment of the present invention will be described with reference to FIG.

Note that the same reference numerals are given to the same constituent parts as in the first embodiment described above, and detailed explanation thereof will be omitted.

Recorded recording paper 3 discharged from first paper discharge rollers 8 and 9
A storage space 28 for temporarily storing the printer case 1 has an inner guide 16° 17 and an outer guide 18 located inside the upper part of the printer case 1.
formed by. A rotary roller 19 rotated in the direction of arrow f is provided to be exposed in the storage space 28, and is used to collect recorded recording paper 30 fed into the storage space 28.
Apply thrust in the direction of contacting and pushing back.

The lower part 18a of the outer guide 18 guides the leading edge of the recorded recording paper 30 discharged from the first paper discharging rollers 8 and 9 toward the upper storage space 28, and the rear end thereof is connected to the first paper discharging roller 8. and the reversing roller 11.

In the above two embodiments, the reversing roller 11 is in pressure contact with the first paper ejection roller 8 to simplify the driving mechanism of the reversing roller 11. A similar effect can be obtained.

〔Effect of the invention〕

As described above, in the present invention, the paper ejection roller guides and guides the trailing edge of the recording paper that has passed the paper ejection roller to the reversing roller by continuous rotation of the paper ejection roller, and the paper is ejected by the reversing roller and the reversing guide. Since the paper is ejected face-down into the old tray, forward and reverse rotation of the paper ejection roller to rotate the paper ejection roller in the forward and reverse directions for face-down operation is unnecessary, making the configuration simple and enabling high-speed paper ejection. This has the effect of

[Brief explanation of the drawing]

The drawing shows a laser beam printer according to the present invention, and the first
This figure and FIG. 2 are longitudinal sectional side views of the main parts. 8.9...First paper ejection roller, 11...
・Reversing roller, 14...Reversing guide, 15...
...I hate spending money on the paper output tray. 4E paper tray.

Claims (1)

[Claims] 1. A paper ejection device of a recording apparatus having a paper ejection roller that continuously rotates in one direction and ejects recorded recording paper one after another,
A recording paper temporary holding means, a reversing roller, a reversing guide, and a paper ejection tray are provided downstream of the paper ejection roller, and the recording paper that has passed through the paper ejection roller face-up is stored in the recording paper temporary holding means, and then The discharge of the recording apparatus is characterized in that an end of the paper is guided to the reversal roller by continuous rotation of the paper discharge roller, and the paper is discharged face down onto the paper discharge tray by the reversal roller and the reversal guide. paper equipment. 2. In claim 1, the reversing roller is a driven roller that is in pressure contact with the paper ejecting roller, and the recording paper that has passed the paper ejecting roller is passed between the paper ejecting roller and the reversing roller to A recording paper ejection device characterized in that the paper is ejected onto a paper ejection tray. 3. Claim 1 or 2, characterized in that the recording paper temporary holding means is an auxiliary paper ejection tray provided so that its outer end is inclined upward at an angle of 15 degrees or more. A paper ejection device for a recording device. 4. A paper discharge device for a recording apparatus according to claim 1, 2, or 3, characterized in that a second paper discharge roller is provided downstream of the reversing guide. 5. In a paper ejection device of a recording apparatus having a paper ejection roller that continuously rotates in one direction and ejects recorded recording paper one after another,
An auxiliary sheet ejecting section, a reversing roller, a reversing guide, and a sheet ejecting tray are provided downstream of the sheet ejecting roller, and the recording paper that has passed through the sheet ejecting roller in a face-up manner is driven by its own weight so that its rear end is ejected as described above. The recording paper is ejected to the auxiliary paper ejection section so as to be in contact with the outer circumferential surface of the roller, and then the rear end of the recording paper is guided to the reversing roller by continuous rotation of the paper ejecting roller, and the reversing roller and the reversing guide A paper discharge device for a recording apparatus, characterized in that the paper is discharged face down onto the paper discharge tray. 6. The recording paper ejecting device according to claim 5, wherein the auxiliary paper ejecting section has a thrust applying means for pushing the recording paper ejected to the auxiliary paper ejecting section back toward the paper ejecting roller. paper equipment.