JP2008265991A - Recording paper stacker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the right-left ends on the recording paper rear side from hitching on a stacker side surface, even when using sheet paper variable in the curl direction in a stacker of a large inclination. <P>SOLUTION: This device has a document reading part such as a digital copier and a facsimile, and a recording part for printing image data sent from a scanner and a personal computer on recording paper. A rib is arranged on a side surface equipped on the ejecting roller side of a recording paper stacker for loading a plurality of ejected recording paper. This rib pushes out the recording paper forward while the recording paper rear side falls on the stacker from an ejecting port, when the recording paper curls to the upper side in the main scanning direction (when both right-left ends of the ejected recording paper curl to the upper side). <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a recording paper stacker such as a digital copying machine or a facsimile, and more particularly to recording paper stacking in a recording paper stacker having a large inclination.

  Conventionally, a digital copying machine, a facsimile, or the like, which reads a document and acquires image information, prints image information read by the document reading unit, the document reading unit, and image data sent from a personal computer on recording paper. A copying apparatus further comprising a stacker for stacking a plurality of discharged recording sheets.

  In the above-described copying apparatus, a recording paper stacker is provided above the recording unit, and an original reading unit is disposed above the recording paper stacker.

  In such a configuration, the original reading unit covers the upper side of the discharged recording paper.

  Therefore, in consideration of the presence / absence of recording paper and the ease of taking out the recording paper, it is necessary to provide a space where the recording paper can be visually checked for checking and taking out the recording paper.

  However, it is effective to delete the space from the viewpoint of reducing the size of the entire apparatus.

  Therefore, a configuration is adopted in which an original reading unit is provided on the recording unit, and a recording paper discharge port is provided above the original reading unit to discharge the recording paper.

  It is also indispensable to reduce the height of the recording paper discharge port in order to make the apparatus compact.

  Therefore, the shape of the stacker for stacking a plurality of discharged recording papers, the lower part of the recording paper discharge port at the rear side in the direction in which the recording paper is discharged is lower than the front part, The structure of providing an inclination is taken.

  By adopting such a configuration, it is possible to secure the stackable number of sheets while suppressing the height of the recording paper discharge port.

  However, although the height of the apparatus can be suppressed by reducing the height of the recording paper discharge port, the inclination of the stacker increases.

  Even when the stacker has a large inclination, even if the recording paper is curled upward in the main scanning direction (the left and right ends of the recording paper to be ejected are on the upper side), the stack surface on the front side of the recording paper is the recording paper discharge port. If it is lower than this, the left and right edges on the rear side of the recording paper are less likely to come into contact with the stacker side surface.

  Even if the left and right ends of the rear side of the recording paper come into contact with the side surface of the stacker, the pressing force to the stacker is small so that it does not get caught.

  However, if the stacker slope becomes larger and the stack surface on the front side of the recording paper is positioned higher than the recording paper discharge port, the left and right edges on the rear side of the recording paper are more than the discharge rollers when the recording paper is discharged. It will be backward.

  Therefore, there has been a problem that a problem that the left and right ends of the rear side of the recording paper come into strong contact with the side surface of the stacker and is likely to be caught.

  Further, while the discharged recording paper falls onto the stacker and is stacked, a force to push the recording paper back toward the discharge roller may be applied to the recording paper due to the inclination of the stacker. The problem of being in contact with the side and getting caught frequently occurred.

Copying for the problem that the leading edge of the next recording paper is caught on the trailing edge of the recording paper curled by curl, and the previously ejected recording paper is pushed out and cannot be stacked normally. There was one in which a pressing member was added (for example, see Patent Document 1).
Japanese Patent Laid-Open No. 01-017750

  However, the prior art described in Patent Document 1 is effective for roll paper having the same curl direction, but has no effect on sheet paper whose curl direction is not constant.

  Further, when the recording paper pressing member is provided at the discharge port, it is difficult to adjust the weight of the pressing member.

  This is because if the member that presses the trailing edge of the recording paper is light, the effect of dropping is reduced.

  On the other hand, if the member that presses the trailing edge of the recording paper is heavy, the recording paper is prevented from being discharged.

  That is, there is a problem that it is difficult to give an effect to all of recording papers of a plurality of sizes and different products.

  Therefore, the present invention is a stacker with a large inclination, and even when a sheet paper whose curl direction is not constant is used, the leading edge of the next recording paper is caught on the trailing edge of the recording paper that is curled. An object of the present invention is to provide a recording paper stacker that can eliminate the problem and stack the recording papers normally.

  According to a first aspect of the present invention, a document reading unit that reads a document and acquires image information, a recording unit that prints image information read by the document reading unit and transmitted image data on a recording sheet, A recording paper stacker that is mounted on a copying apparatus equipped with the recording paper and that stacks the discharged recording paper, and when the recording paper is attached to the copying apparatus, There is provided a recording paper stacker comprising ribs formed so as to protrude perpendicular to the discharging direction.

  According to a second aspect of the present invention, a document reading unit that reads a document and acquires image information, a recording unit that prints image information read by the document reading unit and transmitted image data on a recording sheet, and Is provided, and is provided with the recording paper stacker described above.

  According to the present invention, even when the stacker has a large inclination, the left and right edges on the rear side of the discharged recording paper are prevented from being caught on the side surface of the stacker, and can be stacked in an aligned state on the stacker. .

  Next, the best mode of the present invention will be described with reference to the drawings.

  First, the configuration of the present embodiment will be described. FIG. 1 is an external perspective view of a copying apparatus equipped with a recording paper stacker 1 according to an embodiment of the present invention.

  In this embodiment, the copying apparatus includes a recording paper stacker 1, a rib 2, a recording paper discharge port 3, and a discharge roller 5.

  FIG. 2 is an external perspective view of the recording paper stacker 1 of the present embodiment. A side surface provided on the discharge roller 5 side of the recording paper stacker 1 is referred to as a stacker side surface 6. The stacker side surface 6 is provided with ribs 2 in the vertical direction.

  Here, in the present embodiment, it is assumed that four ribs 2 are provided. However, the number of ribs 2 is not necessarily four in order to realize the present invention.

  The number of ribs can be arbitrarily selected according to the size and material of the recording paper.

  FIG. 3 is a perspective view showing a state in which the recording paper 4 is curled upward in the main scanning direction (the left and right ends of the discharged recording paper are on the upper side).

  FIG. 4 is a diagram showing a state when the recording paper 4 shown in FIG. 3 is discharged to a stacker having a large inclination. The ridgeline of the recording paper when viewed from the front of the copying apparatus is shown.

  Here, when the ridge line on the rear side of the recording paper is viewed, it can be seen that the left and right ends protrude rearward from the central portion.

  Next, the operation of this embodiment will be described.

  The recording paper 4 printed by the recording unit of the apparatus equipped with the recording paper stacker shown in FIG. 1 is discharged from the recording paper discharge port 3.

  Specifically, the recording paper 4 is pushed out from a discharge roller 5 provided in the recording paper discharge port 3.

  When the recording paper 4 pushed out from the discharge roller 5 falls on the recording paper stacker 1, the recording paper 4 falls while being pushed forward along the tip of the rib while the rear side is in contact with the tip of the rib 2. It becomes.

  Next, regarding the operation when the recording paper 4 is dropped, the operation when this embodiment is not used and the operation when this embodiment are used will be compared with reference to FIGS. 5, 6, and 7.

  5, FIG. 6 and FIG. 7 are comparative views including the conventional problem and the solution according to the present invention.

  FIG. 5 assumes a case where the stack surface is lower than the recording paper discharge port 3.

  Further, it is assumed that the recording paper 4 is curled upward in the main scanning direction (the left and right ends of the discharged recording paper are on the upper side) as shown in FIGS.

  In the description of FIGS. 6 and 7, it is assumed that the recording paper 4 is similarly curled.

  In the case of FIG. 5, even if the recording paper 4 is curled, since the discharged recording paper 4 is discharged in parallel with the stacking surface of the stacker 1, the left and right ends on the rear side as shown in FIG. Compared with the rear central portion, the rear side is not inclined.

  Therefore, when the recording paper stacker 1 is dropped, the left and right ends on the rear side of the recording paper 4 are not caught on the stacker side surface 6.

  FIG. 6 illustrates an operation when the recording paper stack surface is higher than the recording paper discharge port 3 and this embodiment is not used.

  In the case of FIG. 3, the recording paper 4 discharged from the discharge port 3 by the discharge roller 5 is inclined such that the left and right ends of the rear side are inclined rearward as compared with the rear central portion as shown in FIG. It becomes a state.

  Therefore, when the recording paper 4 falls on the recording paper stacker 1, the left and right ends on the rear side of the recording paper 4 come into contact with the stacker side surface 6 and may be caught.

  Then, the recording paper does not fall to a normal stacking position due to the catch, and the recording paper is not stacked when the recording paper is aligned.

  FIG. 7 shows an apparatus in which the recording paper stack surface is higher than the recording paper discharge port 3 as in FIG. 6 and is further provided with a rib 2 using this embodiment.

  By providing the rib 2, the rear end side of the recording paper 4 comes into contact with the rib 2 until the recording paper 4 falls on the recording paper stacker 1 and is stacked.

  Then, the recording paper 4 falls along the apex of the rib while being pushed forward.

  Therefore, the left and right ends on the rear side of the recording paper 4 are not caught by the stacker side surface 6.

  Next, the effect of this embodiment will be described.

  As described in the above description of the operation, the rear side of the recording paper 4 contacts the rib 2 and falls while being pushed forward.

  Thus, unlike the recording paper stacker shown in FIG. 6 in which no rib is provided, the left and right ends of the rear side of the recording paper 4 can be stacked on the stacker 1 without being caught by the stacker side surface 6.

  For this reason, it is possible to avoid the problem that the recording paper does not fall to the normal stacking position due to being caught, and the recording paper is not stacked in an aligned state, and the problem of the present invention is solved. Can do.

  Further, this embodiment can be realized only by providing a rib on the recording paper stacker. Therefore, there is an effect that it can be realized at low cost.

1 is an external perspective view of an apparatus equipped with a recording paper stacker of the present invention. 1 is an external perspective view of a recording paper stacker provided with four ribs, which is one embodiment of the present invention. FIG. 6 is a perspective view of a recording sheet curled upward in the main scanning direction (the left and right ends of the discharged recording sheet are on the upper side). FIG. 4 is a diagram showing a ridge line of the recording sheet when the recording sheet of FIG. 3 is discharged from the front side of the apparatus when being discharged to a stacker having a large inclination. It is a figure for the comparison including the conventional subject and the solution means by this invention. It is a figure for the comparison including the conventional subject and the solution means by this invention. It is a figure for the comparison including the conventional subject and the solution means by this invention.

Explanation of symbols

1 Recording paper stacker 2 Rib 3 Recording paper discharge port 4 Recording paper 5 Discharge roller 6 Side of stacker

Claims (7)

A document reading unit that reads a document and obtains image information, and is attached to a copying apparatus including a recording unit that prints image information read by the document reading unit and transmitted image information on a recording sheet. A recording paper stacker for loading the recorded recording paper,
A recording paper stacker comprising ribs that are formed so as to protrude perpendicularly to the recording paper discharge direction on a side surface portion on which the recording paper is discharged when attached to the copying apparatus. The recording paper stacker according to claim 1,
A recording paper stacker, wherein a recording paper stack surface is provided at a position higher than a recording paper discharge port of the copying apparatus. The recording paper stacker according to claim 1 or 2,
A recording paper stacker characterized in that the ribs formed so as to project vertically are in a plurality of rows. A recording paper stacker according to any one of claims 1 to 3,
A recording paper stacker, which is provided on a document reading unit of the copying apparatus. A recording paper stacker according to any one of claims 1 to 3,
The recording paper, wherein the discharged recording paper is a recording paper curled upward at both left and right ends when the discharging direction is the front side and the opposite side of the discharging direction is the rear side. Paper stacker. A copying apparatus including a document reading unit that reads a document and acquires image information, and a recording unit that prints image information read by the document reading unit and transmitted image information on a recording sheet,
A copying apparatus comprising the recording paper stacker according to claim 1.   7. The copying apparatus according to claim 6, wherein the recording sheet stacker, the document reading unit, and the recording unit are provided in order from the top to the bottom.

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