JPH078357U - Paper stacking device - Google Patents

Abstract

(57) [Summary] [Purpose] Stack the sheets of paper conveyed from the paper supply section on the output tray in the same order as when they were set in the paper supply section, and prevent them from jamming. Be sure to transport it to the output tray without fear. [Structure] A document G on a supply tray 4 is conveyed along a predetermined conveyance path 10 in an apparatus case 1 while being curved and inverted. In this conveyance process, the image sensor 15 reads the image on the original G. The read original G is discharged from the discharge port 3 to the outside of the apparatus case 1 and placed on the discharge tray 16. Document placing surface 1 of the discharge tray 16
A support piece 17 is formed on both sides of the base end side of 6a so as to project, and a support bar 18 is installed between the support pieces 17. The rear end side of the document G on the discharge tray 16 is lifted upward by the support bar 18, and the subsequent document G is guided between the discharged document G and the support bar 18. A space S for allowing passage of the document G is formed between the support bar 18 and the discharge tray 16.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a paper stacking device for carrying a paper such as a document from a paper feeding section along a predetermined carrying path and placing it on a discharge tray in a facsimile machine, for example.

[0002]

[Prior art]

 As a facsimile machine, there is one as shown in FIG. 9, for example. As shown in the figure, a supply tray 22 serving as a supply unit for stacking and supporting the originals G is arranged above the apparatus case 21. Further, a separation roller 23 is arranged near the lower end of the supply tray 22, and with the rotation of the separation roller 23, the separation roller 23 and the separation pad 24 cooperate with each other so that the document G on the supply tray 22 is the maximum. The original G on the lower side is separated one by one and fed into the apparatus case 21. The fed-in document G is curved and reversed along a conveying passage 26 formed between a pair of guide plates 25, and is conveyed in the conveying passage 26 by rotation of a plurality of feed rollers 27. Further, a reading window 28 is formed in the guide plate 25, and the document G conveyed through the conveying path 26 is irradiated with light from the light source 29 through the reading window 28. Then, the reflected light from the original G is guided to the image sensor 30 through the reading window 28, and the image on the original G is read. The document G after image reading is discharged from the discharge port 31 to the outside of the apparatus case 21, and is placed on a discharge tray 32 arranged below the discharge port 31.

[0003]

[Problems to be solved by the device]

 In the above-mentioned facsimile apparatus, the original G is placed on the supply tray 22 with its reading surface Ga facing downward, and the original G is taken in by the separating roller 23 and then along the conveying path 26 in the traveling direction thereof. Is reversed. Therefore, the document G discharged from the discharge port 31 to the outside of the apparatus case 1 is placed on the discharge tray 32 with the reading surface Ga facing upward, and the following document G is also placed on the reading surface Ga. The reading surface Ga is sequentially placed with the reading surface Ga facing upward. Therefore, the originals G are stacked and placed on the discharge tray 32 in the order opposite to the order when the originals G were stacked and placed on the supply tray 22, and the order of the originals G after discharge is restored. There was a problem that it was necessary and troublesome.

The present invention has been made in order to solve the above-mentioned problems, and its purpose is to order the paper conveyed from the paper supply section in the same order as when the paper was set in the paper supply section. It is an object of the present invention to provide a paper stacking device that can be stacked and placed on the discharge tray and that can reliably transport the paper to the discharge tray without paper jam or the like.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, according to the present invention, in a paper stacking device configured to convey paper from a paper supply unit along a predetermined transport path and place it on the discharge tray, In the vicinity of the terminal end of the transport path above, a support member is installed to lift and support the rear end side of the paper placed on the discharge tray.

[0006]

[Action]

 Therefore, according to the present invention, the sheet is conveyed from the sheet supply unit along the predetermined conveying path and placed on the discharge tray. At this time, the trailing edge of the sheet is lifted and supported by the supporting member, and the succeeding sheet is guided between the sheet previously placed on the discharge tray and the supporting member. In other words, the paper that has been conveyed through the conveyance path is arranged so that it will not be placed on the paper that has been placed on the discharge tray first, but will also slip between the paper on the tray and the discharge tray. To be done. Therefore, for example, even if the sheets are conveyed while being turned over from the sheet supply unit, the sheets are stacked and placed on the discharge tray in the same order as when they were set in the sheet supply unit. .

Further, for example, when the leading end side of the sheet conveyed through the conveying path is curled downward, the sheet may not be guided between the sheet on the discharge tray and the supporting member. However, since the support member is installed above the discharge tray and a space is formed between the support member and the discharge tray to allow the passage of paper, in the above case, The paper passes through the space and is placed on the output tray. Therefore, even if the sheet conveyed through the conveying path is not guided between the sheet on the discharge tray and the supporting member, the sheet is surely conveyed to the discharge tray without fear of paper jam.

[0008]

【Example】

 An embodiment in which the invention is embodied as a document stacking device in a facsimile machine will be described in detail with reference to the drawings.

As shown in FIG. 1, a document G insertion port 2 is formed on the upper surface of the device case 1, and a document G ejection port 3 is formed on the rear surface (right side of FIG. 1) of the device case 1. ing. A supply tray 4 as a paper supply unit for stacking and supporting the original G is arranged in an inclined state at a position corresponding to the insertion port 2 in the upper part of the apparatus case 1. The original G is placed on the supply tray 4 with its reading surface Ga facing downward.

The separation roller 5 is rotatably supported in the apparatus case 1 near the lower end of the supply tray 4. The separation pad 6 is fixed inside the apparatus case 1 via a support plate 7 so as to face the separation roller 5, and is always directed toward the separation roller 5 by a spring means (not shown) so as to come into contact with the outer peripheral surface of the separation roller 5. Being energized. Then, as the separation roller 5 rotates, the originals G on the supply tray 4 are separated one by one from the lowermost original G by the cooperation of the separation roller 5 and the separation pad 6, and the apparatus is set. It is put into Case 1.

A pair of upper and lower guide plates 8 and 9 are arranged in the apparatus case 1 between the insertion port 2 and the discharge port 3, and a transport passage 10 for a document G is formed between the guide plates 8 and 9. It The upstream side of each of the guide plates 8 and 9 is curved in an arc shape, and the downstream side thereof extends toward the discharge port 3. Then, the fed-in document G is guided into the conveyance passage 10 and is curved and inverted along the conveyance passage 10. The pair of feed rollers 11 and 12 are arranged on the upstream side and the downstream side of the guide plates 8 and 9, respectively, and the rotation of the feed rollers 11 and 12 feeds the document G in the conveyance path 10.

The reading window 13 is formed in the upper guide plate 8 between the feeding rollers 11 and 12, and the light source 14 and the image sensor 15 are arranged in the apparatus case 1 so as to face the reading window 13. Has been done. Then, light is emitted from the light source 14 through the reading window 13 to the reading surface Ga of the document G conveyed in the conveying passage 10, and the reflected light from the reading surface Ga is guided to the image sensor 15 through the reading window 13. Then, the image on the document G is read. The discharge tray 16 is supported by the device case 1 below the discharge port 3, the document G after image reading is discharged from the discharge port 3 to the outside of the device case 1, and the reading surface Ga faces upward on the discharge tray 16. Will be placed in the

As shown in FIGS. 1 and 2, the discharge tray 16 is formed in a substantially square plate shape on a plane, and a pair of left and right sides on the base end side (the apparatus case 1 side) of the document placing surface 16a are provided. The supporting piece 17 is formed to project. A support bar 18 serving as a support member having a round shaft shape is provided between the support pieces 17, and the document G passes between the support bar 18 and the document placement surface 16a of the discharge tray 16. A space S for allowing is formed. Further, a stopper 19 is formed on the leading edge portion of the discharge tray 16 so as to project toward the document mounting surface 16a, and the front end of the document G on the document mounting surface 16a can come into contact with this stopper 19. There is.

Next, the operation of this embodiment will be described with reference to the operation explanatory views shown in FIGS. As shown in FIG. 3, a large number of originals G1 to Gn are stacked on the supply tray 4 with the reading surface Ga thereof facing downward. In this state, as the separation roller 5 rotates, the originals G1 to Gn on the supply tray 4 are separated from the lowermost original G1 one by one and fed into the apparatus case 1. The fed original G1 is conveyed along the conveying path 10 while being curved and reversed, and in the course of this conveyance, the image sensor 15 reads the image on the original G1. The document G1 after the image is read is discharged from the discharge port 3 to the outside of the apparatus case 1, and is placed on the document mounting surface 16a of the discharge tray 16 with its reading surface Ga facing upward as shown in FIG. Placed.

At this time, as shown in the figure, the rear end side of the document G1 is placed on the support bar 18 and lifted so as to bend upward. Further, when the original G1 passes through the feed roller 12 on the downstream side, it is not fed. Therefore, the original G1 is stopped in the feed direction before its front end abuts on the stopper 19, and the rear end of the original G1 is projected upward from the support bar 18 toward the apparatus case 1 side. Become.

In this state, when the succeeding document G2 is discharged from the discharge port 3, as shown in FIG. 5, the front end of the document G2 is the same as that of the document G1 previously placed on the discharge tray 16. It is guided between the rear end and the support bar 18. That is, the original G2 discharged to the outside of the apparatus case 1 is not placed on the reading surface Ga of the original G1 previously placed on the discharge tray 16 and is ejected as shown in FIG. The original G1 and the discharge tray 16 are also arranged so as to be inserted thereinto. When the original G2 is also fed between the discharged original G1 and the discharge tray 16, the original G2 being fed by the feed roller 12 and the original G1 located on the original G2 are The front end is moved to a position where it comes into contact with the stopper 19.

In the same manner, the succeeding original document G3 is guided between the discharged original document G2 and the support bar 18 and placed below the original document G2 as shown in FIG. It In this way, the documents G discharged from the discharge port 3 are sequentially arranged on the discharge tray 16 below the previously discharged document G with the reading surface Ga thereof facing upward. To go. As a result, the originals G1 to Gn are stacked and placed on the discharge tray 16 in the same order as when they were set on the supply tray 4. Therefore, in the present embodiment, it is not necessary to return the order of the documents G after being discharged, which is troublesome.

Further, in this embodiment, the discharged original G is moved to a position where it comes into contact with the stopper 19 as the original G moving under the original G moves, and further moves. Is blocked by the stopper 19. Therefore, the discharged originals G are not stacked and placed on the discharge tray 16 in a scattered state, and the originals G are stacked and placed with their front ends aligned at the position of the stopper 19.

Further, in the above-described document G discharging operation, for example, when the front end side of the document G discharged from the discharge port 3 is curled downward, the document G is placed on the discharge tray 16. There is a risk that the document G may not be guided between the support bar 18. However, in such a case, as shown by the chain line in FIG. 1, the document G passes through the space S between the discharge tray 16 and the support bar 18 and is placed on the discharge tray 16. Therefore, even when the document G discharged from the discharge port 3 is not guided between the document G on the discharge tray 16 and the support bar 18, the document G can be extended to the discharge tray 16 without fear of paper jam. Transported reliably.

That is, for example, in the case where the front end side of the document G discharged from the discharge port 3 is curled downward, if the space S is not formed between the support bar 18 and the discharge tray 16, the same document G is formed. Is prevented from proceeding to the discharge tray 16 side. Therefore, in such a case, the document G cannot be discharged from the discharge port 3, and a paper jam occurs near the discharge port 3. However, as in the present embodiment, the support bar 18 is provided above the base end side of the discharge tray 16 and a space for allowing the passage of the document G between the support bar 18 and the discharge tray 16. By forming S, the problems described above can be solved.

When the document G discharged from the discharge port 3 passes through the space S and is placed on the discharge tray 16, the order of the document G on the discharge tray 16 is out of order. However, if a paper jam occurs, the subsequent reading operation cannot be continued and the smooth reading operation cannot be performed. Therefore, even if the order of the originals G is out of order, It is desirable that the sheet can be surely conveyed onto the discharge tray 16.

The present invention is not limited to the above-described embodiment, and the configurations of the respective parts may be modified and embodied as follows, for example, without departing from the spirit of the present invention. is there. (1) As shown in FIG. 7, the support bar 18 is formed in a rhombic cross section. (2) As shown in FIG. 8, the support bar 18 should be curved so that its central portion is lowered. With this configuration, the rear end side of the document G supported on the support bar 18 is curved in its width direction, and the document G is given a certain degree of rigidity. Therefore, in the state where the rear end of the document G is projected upward from the support bar 18 toward the apparatus case 1, the possibility that the rear end of the document G hangs downward is reduced. (3) Although not shown in particular, instead of the support bar 18, as a support member, a long-axis roller is supported between the support pieces 17 so as to be freely rotatable. With this configuration, the resistance when the discharged original G slips under the discharged original G can be minimized, and the original G can be smoothly slipped in. (4) The stopper 19 is provided so as to be movable along the front-rear direction of the discharge tray 16 so that the position of the stopper 19 can be adjusted according to the size of the document G to be used. (5) The height of the support bar 18 should be appropriately changed with respect to the original placement surface 16a of the discharge tray 16. (6) The support piece 17 that supports the support bar 18 should be provided on the rear surface of the device case 1 and not on the discharge tray 16. (7) Embody this invention in a paper stacking device other than a facsimile device, for example, a printer or a copying machine.

[0023]

[Effect of device]

 As described in detail above, according to the present invention, the sheets conveyed from the sheet supply section can be stacked and placed on the discharge tray in the same order as when they are set in the sheet supply section. The excellent effect is that the paper can be reliably transported to the discharge tray without fear of paper jams.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view showing an embodiment in which the present invention is embodied as a document stacking device in a facsimile machine.

FIG. 2 is a perspective view showing a discharge tray.

FIG. 3 is an operation explanatory view showing a document discharging operation in order.

FIG. 4 is an operation explanatory view showing a document discharge operation in order.

FIG. 5 is an operation explanatory view showing a document discharging operation in order.

FIG. 6 is an operation explanatory view showing a document discharge operation in order.

FIG. 7 is a partial cross-sectional view showing another example of the support bar.

FIG. 8 is a cross-sectional view showing another example of the support bar.

FIG. 9 is a partial cross-sectional view showing a conventional technique.

[Explanation of symbols]

4 ... a supply tray as a paper supply unit, 10 ... a transport passage,
16 ... Ejection tray, 16a ... Original placement surface, 17 ... Support piece, 18 ... Support bar as a support member, G ... Original, S ...
space.

Claims (1)

[Scope of utility model registration request] 1. A sheet stacking device configured to transport a sheet from a sheet supply unit along a predetermined transport path and place the sheet on a discharge tray in the vicinity of a terminal end of the transport path above the discharge tray. Is a sheet stacking device, in which a supporting member is provided to lift and support a rear end side of a sheet placed on a discharge tray.