JPH068128Y2 - Recording paper storage device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a storage device for recording paper printed by a printer.

(Prior Art) In the prior art, a recording paper printed by a printer such as an electrophotographic recording device is discharged to a recording paper receiver on the printer side. Further, in a printer equipped with a sorter, printed recording papers are sorted and sorted in the order of pages and discharged to the sorter. A sensor for detecting the amount of recording paper is provided in the sorter.

(Problems to be solved by the invention) When a single printer is used to print according to commands from a plurality of computers and recording sheets are discharged and stored in different stackers of each computer, one's own computer If you mistakenly think that it is from the other stacker and take out the recording paper printed by the instruction from another computer from the other stacker, or take it out from your own stacker to check the printed contents, This is naturally expected, and it may be necessary to return the recording paper to the original stacker again when the recording paper is taken out by mistake. In such a case, with the known structure, even if the sheet is once returned, it is difficult to return it to the sorter because the recording paper is caught by the sensor or the like in the sorter.

An object of the present invention is to enable the recording paper once taken out from the stacker to be freely returned to the original stacker.

(Means for Solving Problems) A feature of the present invention is that a stacker for storing recording paper and an upper part of the stacker are provided, one end of which is pivotally supported, and the other end of which is A detection lever having a slidable sliding portion provided on the upper surface of the recording paper discharged into the stacker, and one end of the detection lever swingable in a substantially U-shape on the other end of the detection lever. A guide lever connected to the other end of which a slider is provided; a receiving portion that slidably receives the slider of the guide lever above the stacker; and a detection lever and a guide lever. It is provided with a shield plate attached to the connecting portion and a sensor which is operated by the displacement of the shield plate to detect that a predetermined number of recording sheets are stored on the bottom surface of the stacker.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, the recording paper storage device A of the present invention has a plurality of stackers 1, 2, 3, and 4 stacked vertically in a case 5, and each stacker has a predetermined number of sheets. The recording paper P can be stored. The case 5 has an inverted L-shaped side surface, and a lid 6 can be opened and closed on the left side surface. The mounting shaft 7 on the printer body B side can be connected to the printer body B by a locking portion 5a and a hook 5b formed on the case 5. The paper feed roller 8 on the printer body B side is in elastic contact with the pinch roller 9. The inner surface of the lid 6 is a rib 6a for reducing frictional resistance when the recording paper P is conveyed to each of the stackers 1 to 4. Is formed. Each stacker 1 to 1 is provided with a predetermined gap from the rib 6a.
4 is provided with paper guides 10 to 14 for guiding the recording paper P. At the entrance of the recording paper conveying passage to each of the stackers 1 to 4, a switching lever 15 to switch the traveling direction of the recording paper P is provided.
18 is disposed with the shafts 15a to 18a as the swing center. These shafts 15a to 18a are fixed to shafts of a rotary solenoid (not shown), and the rotary solenoid is operated by a print command, and the shafts are operated to switch corresponding switching levers 15 to 18. That is, when the switching lever 15 is at the solid line position, the feed roller 8
The recording paper pulled in by the pinch rollers 9 and 9 is guided into the recording paper storage device A by being guided by the switching lever 15. However, when the switching lever 15 is switched from the solid line position and swings in the counterclockwise direction, the recording paper is discharged to the outside of the recording paper storage device A like the recording paper P ′ shown by the chain line.
The recording paper that has been drawn into the recording paper storage device A is guided to the transport path to the stacker 1 when the switching lever 16 is switched from the solid line position and swings clockwise. When the switching lever 17 is switched, it is guided to the stacker 2, and when the switching lever 18 is switched, it is guided to the stacker 3. Further, when all the switching levers 15 to 18 are in the positions shown by the solid lines, the recording paper is guided to the stacker 4. Paper guide 1
Recording paper feed rollers 20 to a predetermined position of 0 to 14
24 and the pinch rollers 20a to 24a elastically contacting the same
Is provided. The rotation of the motor shaft of the motor 19 is transmitted to each of the paper feed rollers 20 to 24 via a train wheel (not shown) to be driven to rotate. Reference numeral 25 is a sensor for detecting that the recording paper is taken into the recording paper storage device A, and 25a is a shielding plate which is operated by the recording paper passing through the paper conveyance path. Similar sensors 26 to 29 and shielding plates 26a to 29a are also arranged in the conveying path to the stackers 1 to 4.

Since the stackers 1 to 4 have the same configuration,
The stacker 1 will be described in detail with reference to FIGS.

The paper feed roller 21 and the pinch roller 21 are connected to the stacker 1.
With a, the recording paper P is discharged into the stacker 1 while being inclined downward. A member located above the stacker 1 (the third
In the figure, a bearing portion 31 is provided on the bottom surface of the base portion (left end portion) of the stacker 2), and a shaft portion 32a at one end of the detection lever 32 is pivotally supported. Detection lever 32
A sliding contact portion 32b is formed on the bottom surface of the other end of the recording sheet P, and the upper surface of the recording paper P can be slidably contacted with this sliding surface and is discharged into the stacker 1. One end of a guide lever 33 is slidably connected to the other end of the detection lever 32 by a connecting shaft 34 to form a substantially U shape. A slider 33a is formed at the other end of the guide lever 33. At the tip of the stacker 2, an L-shaped receiving portion 35 and a notch 35a are formed at the tip of the receiving portion, and the slider 33a
Are slidably received on the upper surface of the receiving portion 35. A shield plate 36a is attached to the connecting portion between the detection lever 32 and the guide lever 33, and a sensor 36 is provided at a position that can face the shield plate. Therefore, in this sensor, the recording paper is the bottom surface of the stacker 2. In order to detect that a predetermined number of sheets have been stored in, the operation is performed by the displacement of this shielding plate.

An example of the operation when the recording paper storage device A in the present embodiment is installed in the print main body B capable of printing according to the print commands of four computers will be described.
When the printer is operated by the print command of the first computer and the printed recording paper is discharged to the stacker 1, the switching lever 15 is moved to the position indicated by the solid line in the first illustration by the print command from the first computer. Further, the switching lever 16 is set to the switching position in which the switching lever 16 is swung clockwise from the solid line position. At the same time, the paper feed rollers 20 to 24 are rotated by the operation of the motor 19. The printed recording paper P drawn from the printer body B by the paper feed roller 8 and the pinch roller 9 is detected by the sensor 25 while passing through the paper guide 10. Then, while passing through the paper guide 11, it is detected by the sensor 26 and is discharged into the stacker 1 from between the paper feed roller 21 and the pinch roller 21a as shown in FIG. To prevent the detection lever 32 from moving during this paper ejection, the recording paper P
Are slanted downward so that the sheets are ejected, and the sheets are slidably contacted with the slidable contact portion 32b and overlapped in the stacker 1. As the recording paper P overlaps under the sliding contact portion 32b, the other end of the detection lever 32 gradually rises, and the shield plate 36a.
Then, the sensor 36 is finally shielded to produce an output, and the printer is stopped. During this time, since the slider 33a of the guide lever 33 slides on the receiving portion 35 toward the front end portion, the other end portion of the guide lever 33 does not interfere with the storage of the recording paper in the stacker 2 located above. Absent.

The recording paper P ejected to the stacker 1 is once taken out of the stacker for some reason, and then again the same stacker 1
The operation for returning to will be described with reference to FIGS.

Once the overlapping recording sheets P are taken out from the stacker 1, the detection lever 32 swings around the shaft portion 32a as shown in FIG. 5, and the slider 33a of the guide lever 33 is stopped at the base of the receiving portion 35. Return to the position. The connecting portion of both levers descends, and the shield plate 36a is positioned below the sensor 36 and apart from it. When the recording paper P is retracted from the take-out port of the stacker 1 to this state, it is pushed up while sliding on the lower surface of the guide lever 33 at the upper corner of the rear end of the recording paper P, and the slider 33a. The receiving portion 35 is slid toward the front end portion (shown in FIG. 6), and then the sliding contact portion 32b of the detection lever 32 smoothly slides in contact with the upper surface of the uppermost paper of the recording paper P (shown in FIG. 7). In this state, the stacker 1 is further retracted and is again stored in a predetermined position in the stacker 1.

(Effect of the Invention) The present invention can easily and smoothly return the recording paper once taken out from the stacker to the same stacker.

[Brief description of drawings]

The drawings show one embodiment of the present invention. FIG. 1 is a vertical sectional view, FIG. 2 is an enlarged sectional view showing the main part, and FIG.
FIG. 4 is a cross-sectional view taken along line I-III, FIG. 4 is an enlarged cross-sectional view of a main part of the recording paper ejected state, and FIGS. 5 to 7 are cross-sectional views illustrating an operation when the recording paper is retracted into the stacker. . 1 to 4 ... Stacker, 31 ... Bearing part, 32 ... Detection lever, 33 ... Guide lever, 33a ... Slider, 34 ... Sliding contact part, 35 ... Receiving part, 36 ... Sensor, 36a ... ... Shielding plate, P ... Recording paper, A ... Recording paper storage device.

Claims (1)

[Scope of utility model registration request] 1. A stacker for storing recording papers, a recording paper which is positioned above the stacker, has one end pivotally supported, and the other end being discharged inside the stacker. A detection lever having a swingable sliding portion provided on the upper surface of the paper, one end of which is swingably connected to the other end of the detection lever in a substantially U shape, and the other end of which is connected. Is a guide lever provided with a slider, a receiving portion for slidably receiving the slider of the guide lever above the stacker, and a shield plate attached to a connecting portion between the detection lever and the guide lever, A recording sheet storage device, comprising: a sensor that operates by displacement of the shielding plate to detect that a predetermined number of recording sheets are stored on the bottom surface of the stacker.