JPS62105862A - Paper discharging apparatus - Google Patents

Abstract

PURPOSE:To stop operation when an operation trouble is generated by installing a detection means for detecting the position of a paper discharge roller and detecting the operation trouble in paper assortment and discharge operation. CONSTITUTION:When paper discharging rollers 16 and 18 start shifting in the right direction, a counter 32 for counting the time during which a driving motor 24 operates is set to zero. During the time when the driving motor 24 operates, the counter 32 performs counting-up at each interruption of the timer. Though the driving motor 24 stops operation at the time point when a light shielding body 29 reaches a right photosensor 30b part, an offset error signal is generated and printing operation is suspended, when a detecting means 33 detects the relation ta>=tx, in which ta is the counted value on the counter 32 and tx is a prescribed value, in other words, when the light shielding body 29 is not detected by the right photosensor 30b.

Description

Detailed Description of the Invention (Technical Field) The present invention relates to a paper ejecting device that has a job separator and can sort ejected sheets, and more specifically, it is applicable to the paper ejecting section of printers, copying machines, and facsimile machines. The present invention relates to a paper discharge device.

(Prior Art) In a conventional paper ejecting device, which is equipped with a paper ejecting means that can sort the ejected paper by moving the ejecting roller to the left and right, the paper ejecting device changes as the ejecting roller moves. The position of the moving paper ejection roller was detected by a photo sensor and a light shield provided on the moving paper ejection roller.

A more specific configuration of the above-mentioned detection means includes arranging photo sensors at one end and the other end of the operating stroke of the light shield, and directing the optical path of the first sensor to the light shield. The movement of the paper ejecting roller is controlled by detecting the position of the light shielding member during its operation stroke depending on whether or not the light shielding member is envisioned.

However, in the conventional apparatus described above, there is no means to display to the operator whether or not the paper ejecting means is operating properly (or, the paper ejected after the ejecting operation is not accurately sorted left and right). There is an inconvenience that it is recognized for the first time that the paper ejection means is malfunctioning.

(Objective) The present invention solves the above-mentioned problems of the prior art, and provides an IK paper ejecting device that can detect malfunctions in the paper ejecting operation and stop the operation when malfunctions occur. purpose.

(Structure) In order to achieve the above-mentioned object, the present invention provides a paper ejecting device comprising a paper ejecting means for distributing ejected sheets each time the paper ejecting roller moves, and a driving means for moving the paper ejecting roller. A detection means for detecting the position of the paper ejection roller, and a detection means for detecting the time from the start of the drive means until the position is detected by the detection means, and the detection means detects a time longer than a predetermined time. The device is characterized in that it is configured to sometimes generate an error signal.

Hereinafter, a detailed explanation will be given based on one embodiment of the present invention.

Figure 1 shows 4! of an intaglio machine to which the present invention can be applied. 2 is a front view showing the sheet ejecting means, FIG. 3 is a timing chart 1-1 between each member, and FIG. 4 is a flow chart.

In Fig. 1, a light source such as a laser (
an optical writing section 2 (not shown), an OPC belt 3 that receives a light beam, a charging section 3a, a developing section 4, a transfer section 5, a static eliminating section 6, and a cleaning section arranged around the OPC belt 3. 7, a fixing section 8, a paper discharge section 10 connected from the fixing section 8 via a guide plate 9, and a plurality of sets of paper feed cassettes 12 equipped with paper feeding means such as paper feed rollers 11. , a sequence for controlling the various members mentioned above, and a storage section 14 in which a printed circuit board 13 for a controller is arranged.

In the above apparatus, the controller converts data such as characters or graphics to be copied into video signals page by page, turns on and off the laser that is the light source, and exposes the OPC belt 3 charged by the charging section 3a. A latent image such as a character or graphic is created by the developer section 4, transferred to transfer paper of an appropriate size fed from the paper feed cassette 12, and fixed by the fixing section 8, after which it is ejected. The transfer paper is ejected to a paper ejection tray 15 installed at the top of the i-placement body 1 by the paper section IO.

Next, the paper ejecting means constituting the paper ejecting section 10 will be specifically explained.

In FIG. 2, the axes of an upper roller shaft 17 provided with a plurality of upper paper ejection rollers 16 and a lower roller shaft 19 provided with an upper paper ejection roller 18 disposed opposite to the upper paper ejection rollers 16 are parallel to each other. The end portions of the L roller shaft 17 and the lower roller shaft 19 are each mounted in a bearing 2 by a mounting body 20.
1 for laterally movable movement. A slide gear 22 that is fitted with appropriate means and guided in movement is installed approximately at the center of the lower roller shaft 19 by a stopper 22'a, and a part of the drive means that meshes with this slide gear 22 is installed. A worm gear 23 is fixed to a rotating shaft 24a of a drive motor 24. Then, by the forward and reverse rotation of the drive motor 24, the slide gear 2 is rotated through the worm gear 23.
2, and by the lateral movement of the slide gear 22,
In FIG. 2, the lower roller shaft 19 and the upper roller shaft 17 are
It moves it left and right. A sprocket 25 is provided at the right end of the lower roller shaft 19, and a rotational force from a drive source (not shown) is applied to the lower roller shaft 19 through a hook link chain 26 provided on the sprocket 25.
transmitted to.

Position detecting means is provided at the left ends of the upper roller shaft 17 and the lower roller shaft 19. That is, as shown in FIG. 2, a regulating plate 27 is fixed to the left end of the lower roller shaft 19.
An interlocking plate 28 hanging down from the upper roller shaft 17 is fitted onto the regulating plate 27 so that the upper roller shaft 17 and the lower roller shaft 19 are interlocked together. Further, a light shielding body 29, which is a part of the position detecting means, is suspended from the left end of the lower roller shaft 19. This light shielding body 29 includes photosensors 30a and 30 disposed at the left and right operation stroke ends, respectively.
The position is detected by b.

Next, the operation of this embodiment will be explained based on the flowchart shown in FIG. That is, at the start of printing, the offset right support checks the left designation, and if the right is set to 1, the offset right flag is set to 1. And feeding the transfer paper,
The conveyance and transfer operations are performed, and when the rear end of the transfer paper reaches the paper discharge sensor 31 and passes the paper discharge sensor 31, the offset right flag is checked. In this embodiment, the home position of the discharge rollers 16, 18 is at the left end of the operating stroke. If it is an offset right flag, the drive motor 24 is started to move the paper discharge rollers 16, 18 to the right, but at least when the transfer paper passes the paper discharge sensor 31, it is recognized that the offset left flag is detected. When the left photosensor 30a is not turned on, the drive motor 24 is started to move the paper discharge rollers 16 and 18 to the left, and if the left photosensor 30a is turned on, the offset right flag 1 is set. Return to the process.

Then, when the paper ejection rollers 16 and 18 start moving to the right, a counter for counting the on-time of the drive motor 24 (CMO
TOR) 32 to zero. This counter 32
is to count up every time the timer interrupts while the traction motor 24 is on. The drive motor 24 stops operating when the light shield 29 reaches the right photosensor 30b, but the detection means 33 detects that the counter value t of the CMOTOR 32 is t, ≧t, when the counter value t of the CMOTOR 32 is a predetermined value t. If it is detected that
That is, if the light shielding body 29 is not detected by the right photosensor 30b within time t, an offset error signal is generated to stop the printing operation.

However, the detection result of the detection means 33 is 1. <1. If,
Turn on the drive motor 24 again, and this time turn on the paper ejection roller 16.
．． 18 to the left and reset CMOTOR 32 to zero again. The drive motor 24 stops operating when the light shield 29 reaches the left photosensor 30a.
Here too, if tll≧t8, an offset error signal is generated and the printing operation is stopped.

In this way, the transfer sheets discharged by the left and right movement of the paper discharge rollers 16 and 1B are sorted and discharged to the left and right, making it easy to sort them. Further, when the movement of the paper ejection rollers 16 and 18 is not proper and the above-mentioned distribution is in a defective state, the printing operation can be stopped immediately to make the operator aware of the abnormality.

The timing for returning the paper ejection rollers 16 and 18 to the home position (the position of the left photosensor 30a) is to start the drive motor 24 one hour after the transfer paper passes the paper ejection sensor 31, as shown in FIG. , to move it to the left. During this movement as well, abnormal operation is checked by detecting the operating time by the CMOTOR 32 described above.

(Effects) The present invention is configured as described above, and it is possible to easily detect a malfunction during the paper discharging operation, and to stop paper discharging in the event of a malfunction, so that the paper discharging device can be operated reliably. It is possible to provide the following.

[Brief explanation of drawings]

FIG. 1 is a side view showing an outline of a copying machine to which the present invention can be applied, FIG. 2 is a front view showing an embodiment of a paper ejection means according to the present invention, and FIG. 3 is a diagram showing each member of the same embodiment. FIG. 1I is a flowchart of the same embodiment. 16.18... Paper discharge roller, 17.19... Roller shaft, 22.23.24... Drive means, 29. 30
a. 30b... W, detection means; 33... detection means. q (Genius Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] A paper ejecting device comprising a paper ejecting means for distributing ejected paper by moving the paper ejecting roller, and a driving means for moving the paper ejecting roller, a detecting means for detecting the position of the paper ejecting roller, and a detecting means for detecting the position of the paper ejecting roller, and the driving means for moving the paper ejecting roller. It is characterized by comprising a detection means for detecting the time from the start of the means until the position is detected by the detection means, and configured to generate an error signal when the detection means detects the time longer than a predetermined time. Paper ejection device.