JP2553257B2 - Paper guide plate for stacker - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet guide plate of a stacker device attached to , for example, a computer system or a printer.

[0002]

2. Description of the Related Art Conventionally, for example, in a stacker device for stacking cut sheets of a computer system, as shown in FIG. 4, sheets fed from the outside are fed to a table 4 by a conveying section 2 and a sheet guiding section 3 and piled up. It is configured to be. The conveying unit 2 is composed of conveying rollers 21 and 22 provided at appropriate intervals, a conveying belt 23, and the like, and the paper guide unit 3 guides a sheet sent along the conveying line of the conveying unit 2 with a guide plate 31.・ 32 is provided.

These guide plates 31, 32 are, for example,
Taking the guide plate 31 for guiding the sheet feeding direction just before the table 4 as an example, as shown in FIG.
The guide surface 35, which is made of a plate material such as an iron plate, a steel plate, and a stainless steel plate, and is in sliding contact with the paper is formed of a hairline-finished stainless steel surface or nickel-plated surface so that the paper easily slips.

[0004]

By the way, in recent years, there has been a strong demand for speeding up of computer systems. Along with this, it is strongly demanded that sheets used in computer systems be conveyed at high speed and stacked. I was requested. However, according to the paper guide unit of the conventional stacker device, when the paper is conveyed at high speed,
A large amount of toner, paper dust, and the like adhere to the guide surface of the guide plate 31 in a short time, and the frictional resistance of the guide surface increases within a short time, so that paper jam easily occurs. In addition, the paper may be sent to the stacker device without being completely discharged, and may be electrostatically attracted to the guide plate 31 to cause a paper jam .
Ing to promote the adhesion of toner and paper dust. Furthermore, the guide direction of the paper is easily disturbed by minute scratches or uneven plating on the guide surface, uneven adhesion of toner or paper dust, and the like, and skewing of the paper easily occurs.

In addition, in order to prevent skewed sheets and jammed sheets, it is necessary to maintain the finishing accuracy of the guide surface at a constant level. It was also found that such work is necessary, which is disadvantageous in terms of cost reduction. Incidentally, JP-A-6
No. 3,259,546 discloses “A stimulable phosphor sheet.
A guide member for guiding in a predetermined direction
Attached to the guide member and storing the stimulable fluorescent material.
And a protective member with which the sliding contact is made.
Characterized by being formed of a synthetic resin body having irregularities on the surface
Guide means for accumulative phosphor sheet. Is disclosed
It However, the stimulable phosphor sheet used here
Is clearly different from the "paper" of the present invention,
It is impossible to apply this content to the printer as it is.
It Also, Japanese Patent Laid-Open No. 50-564 and Japanese Utility Model Laid-Open No. 62-1
No. 91739 and No. 58-170650.
Is a variety of problems that may occur during paper feeding or paper transportation.
In order to solve the problem, using a pad with bristles
Friction member provided with raised protrusions in a predetermined direction, or
A configuration using a flexible member configured like a brush is described.
However, in each case, the application place, issues, and effects are
To solve the problem of the present application with these, unlike the wish
I can't. Japanese Patent Laid-Open No. 63-41339 discloses "Transfer
Equipped with a guide member that guides the image transfer section and the transferred material to the transfer section
In the image forming apparatus, a part of the guide member is made of metal.
Support member that attaches the guide member to the main body of the device.
It is made of a material having a product resistivity of 10 ⁸ to 10 ¹¹ Ω · cm,
And of the support member in contact with the metal portion of the guide member.
A transport device characterized by forming part of it with metal is described.
Have been. The guide member (and supporting member)
It is provided on the upstream side of the copying unit, inside the stacker device.
The configuration requirements corresponding to the guide plate and sliding plate of the present application in
It is not applicable to the present application because of the lack. JP-A-1-
Japanese Patent No. 117151 discloses "Device Main Body and This Device Main Body"
Paper feeding means incorporated into the frame of the same through an insulating member
Is it a metal that guides and conveys the recording paper fed from
And a guide body comprising the guide body.
Being grounded to the conductive resin body attached to the frame
An image forming apparatus characterized by. Is described. Only
However, in this description, the subject of the present application in the stacker device
Is not shown and therefore solving the problem of the present application is
Can not. Japanese Utility Model Laid-Open No. 58-158052 discloses a paper
The sheet provided at the bend of the transport path that changes the transport direction of the
It is a device related to the guide, and the "outer periphery of the cross section has an arc shape.
Conveying a sheet by sliding it against a linear guide
In the sheet guide that changes the direction,
Characterized by abrading plastic tape attached
"Sheet Guide" is described. To this content
Is the toner or recording paper supplied from the recording means to the recording paper.
Paper dust generated from the paper accumulates on the guide plate, causing paper jams and paper
I have no idea what matters that might cause skewing.
I don't care. In addition, "When performing high-speed transfer and high-speed stacking
To prevent the occurrence of paper jams and paper skew
The problem that the present invention intends to solve.
I can't find any description. The present invention has been made in consideration of the above circumstances, the generation of paper jams and paper skew when performing high-speed transport and high-speed stack, further, toner
Together so that wear in preventing the adhesion of over or paper dust, and aims to provide a paper guide plate of the stacker apparatus which can omit the labor and time and consuming operations such as buffing operations and appearance workup To do.

[0006]

Means for Solving the Problems A stacker according to the present invention
The paper guide plate of the apparatus is attached to the guide plate 31 and the guide surface 35 of the guide plate 31, as shown in FIG. 1, for example, and guides the paper in a certain direction while contacting the paper at innumerable points. and a sliding plate 36 having a directivity, the moth
The id plate is made of a conductive plate, and
The sliding contact plate is attached to the guide plate with conductive double-sided adhesive tape
It is characterized by being attached.

[0007]

In the present invention, since the surface of the sliding contact plate 36 that comes into contact with the paper is composed of innumerable points, it becomes difficult for toner, paper dust, etc. to adhere to the surface of the sliding contact plate 36, and these adhere to each other. The increase in frictional resistance that occurs is suppressed. Also, the sliding contact plate 3
Since toner, paper dust, etc. are less likely to adhere to the surface of 6, the toner, paper dust, etc. are less likely to be unevenly attached to the surface of the sliding contact plate 36, and the friction resistance of the sliding contact plate 36 is less likely to vary. Become.

Further, since the sliding contact plate 36 has a directivity for guiding the paper in a fixed direction, the paper contacting this is reliably guided in the fixed direction. Moreover, in order to secure the paper guiding action of the slide contact plate 36, for example, the guide direction of the slide contact plate 36 only needs to be adjusted when the guide plate 31 is assembled. There is no need to do so.

In the present invention , further, the guide plate 3
1 is made of a conductive plate material such as a metal plate or a conductive synthetic resin, and the sliding contact plate 36 is attached to the guide plate 31 with a conductive double-sided adhesive tape 37 .
In, via a guide plate 31 and double-sided adhesive tape, the sliding plate 36 can be aircraft grounded, to prevent charging of the sliding contact plate 36, the toner or paper dust adheres, is by force, the paper Running
It is possible to prevent an increase in frictional resistance to the sheet , or to prevent electrostatic attraction of the sheet to the sliding contact plate 36.

[0010]

Embodiment A guide plate of a stacker apparatus according to an embodiment of the present invention will be described below with reference to FIGS. 1 to 4. As shown in FIG. 4, the stacker device to which the present invention is applied includes a transport unit 2, a paper guide unit 3,
A table 4 and a table driving device 5 are provided, and the sheet fed from one side (the right side in the figure) of the upper part of the box 1 is conveyed by the conveying section 2 and the sheet guiding section 3 along a conveying line indicated by a chain line. It is configured to be sent out to 4 and piled up.

The transport unit 2 includes two pairs of transport rollers 21 and 22 and a pair of transport belts 23 which are provided to face each other with an appropriate interval. The sheet guide unit 3 includes guide plates 31 and 32 for guiding the direction of the sheet conveyed by the conveyor belt 23 immediately before the table 4, a guide plate 38 for guiding the sheet between the conveyor belt 23 and the conveyor roller 22, and a conveyor roller 21.・ 22
A guide plate 39 that guides the paper between them, and a guide plate 40 that guides the paper fed from the entrance to the transport roller 21 are provided.

The table driving device 5 is configured to drive the table 4 up and down so that the upper surface of the sheets stacked on the table 4 has a constant height. Table 4
Of the guide plates 31 and 32 for guiding the direction of the paper conveyed by the conveyor belt 23 immediately before the lower guide plate 32.
Is fixed to the casing 1, and the upper guide plate 31 is fixed to a lower portion of an arm 33 which is swingably supported by the casing 1.

As shown in FIGS. 2 and 3, the pair of conveyor belts 23 are incorporated in the arm 33. The conveying surface (lower side surface) of the conveyor belt 23 and the guide surface 35 of the upper guide plate 31 intersect each other when viewed from the side, and as shown in FIG. A notch 34 for avoiding interference with the conveyor belt 23 is provided in the portion.

The upper guide plate 31 is made of a metal plate which is electrically conductive and is grounded via the arm 33. The sliding guide plate 36 attached to the guide surface 35 of the metal plate serves as a paper guide plate. Configure. The sliding contact plate 36 may be configured so as to have a directivity that guides the paper in a predetermined direction while contacting the paper at a myriad of points.
Natural leather such as deer skin, for example, countless short hairs 36b inclined in a certain direction on the surface of a cloth-like base material 36a as shown in FIG.
Artificial leather (trade name: Clarino, etc.) that is densely planted, and artificial leather (trade name: camouflage tape, etc.) that is densely planted with countless scales inclined in a certain direction on the surface of a cloth-like substrate
Etc. can be used. In this embodiment, the sliding contact plate 36 is made of artificial leather in which countless short hairs 36b inclined in a certain direction are densely planted on the surface of a cloth-like base material 36a which can be obtained relatively inexpensively.

The sliding contact plate 36 is attached to the guide surface 35 such that the inclination direction of the short bristles 36b is directed to the guide direction of the sheet. The sliding contact plate 36 may be attached to the guide surface 35 by using an adhesive. However, in this embodiment, in order to prevent the sliding contact plate 36 from being charged, the sliding contact plate 36 using the conductive double-sided adhesive tape 37 is used. The plate 36 is attached to the guide surface 35.

The sliding contact plate 36 may be adhered only to the central portion of the guide surface 35 or to both side portions thereof. In this embodiment, the workability of adhering the sliding contact plate 36 is improved and the sliding contact plate 36 is attached. In order to prevent variations in the guide direction of the plate 36, one slide contact plate 36 is attached over the entire guide surface 35 shown by hatching in FIG. In the sheet guide portion of this stacker device, the surface of the sliding contact plate 36 is composed of innumerable points consisting of the tips of the short bristles 36b, so that toner and paper dust are unlikely to adhere to the surface of the sliding contact plate 36, Since the increase in frictional resistance due to the adhesion of toner or paper powder is prevented for a long time, the occurrence of paper jam due to the increase in frictional resistance is prevented for a long time.

Further, since the guide plate 31 is made of a conductive metal plate and the sliding contact plate 36 is attached to the guide plate 31 with the conductive double-sided adhesive tape 37, the sliding contact plate 36 has both sides. Adhesive tape 37 and guide plate 31
The machine is grounded via the so that there is no risk of being charged. As a result, there is no possibility that the fed paper is electrostatically attracted to the sliding contact plate 36, and the occurrence of paper jam due to electrostatic attraction can be prevented.

Further, since the toner and the paper powder hardly adhere to the surface of the sliding contact plate 36, the toner and the paper powder do not adhere unevenly to the sliding contact plate 36, and the friction resistance of the sliding contact plate 36 varies. There is no risk of As a result, the sheet fed from the transport unit 2 is surely delivered toward the slanting direction of the short bristles 36b of the sliding contact plate 36, so that the sheet is reliably guided in a certain direction and the sheet skew occurs. Can be prevented.

Moreover, in order to secure the paper guiding action of the slide contact plate 36, the guide direction of the slide contact plate 36 may be adjusted when the guide plate 35 and the slide contact plate 36 are assembled. This eliminates the need for laborious and time-consuming work such as precision inspection, which is advantageous for cost reduction.
In the above description, the case where the sliding contact plate 36 is attached to the upper guide plate 31 that guides the sheet immediately before the table 4 has been described as an example, but other examples of guiding the sheet in the stacker device are described. Sliding contact plate 3 on the guide plates 32, 38, 39 and 40
6 can be adhered to each other to form a paper guide plate, whereby each guide plate 32, 38, 39 can be formed.
It is possible to prevent the occurrence of paper jams and paper skews at 40 places, and to eliminate the need for time-consuming and time-consuming work such as buffing work and precision appearance inspection.

A stacker device to which the present invention is applied
Is a computer system that uses cut sheets,
Whether attached to true-type copiers, laser printers, etc.
Good.

[0021]

As described above, the stacker according to the present invention
According to the paper guide plate of the apparatus, the guide surface of the guide plate is covered with the sliding contact plate, and the surface of this sliding contact plate is composed of innumerable points including the tips of short hairs, scales, etc. It is difficult for toner, paper dust, and the like to adhere to the surface of the plate, and the frictional resistance is less likely to increase due to these adhesions, so that the occurrence of paper jam due to the increase in frictional resistance can be prevented for a long period of time.

Further, since the toner and the paper powder are unlikely to adhere to the surface of the sliding contact plate, the toner and the paper powder are not evenly adhered to the sliding contact plate, and the friction resistance of the sliding contact plate is less likely to vary, resulting in friction. It is possible to prevent the skewed paper from being generated due to the resistance belly for a long period of time. Further, in order to secure the paper guiding action of the slide contact plate, it is sufficient to adjust the guide direction of the slide contact plate when assembling the guide plate and the slide contact plate. This eliminates the need for troublesome work, which is advantageous in reducing costs.

[0023] The present invention further together constitute at plate having conductivity guide plate, since wearing tension on the guide plate with double-sided adhering tape with a conductive sliding contact plate, guide plate and both surfaces stuck The sliding contact plate can be grounded via the tape, preventing the sliding contact plate from being charged and by electrostatic attraction.
Toner and paper dust are prevented from adhering and this is
The effect of preventing an increase in rubbing resistance can be enhanced , and the occurrence of paper jam can be prevented.

[Brief description of drawings]

FIG. 1 is a side view of a paper guide plate according to an embodiment of the present invention.

FIG. 2 is a side view of essential parts of a stacker device to which an embodiment of the present invention is applied.

FIG. 3 is a plan view of a main part of a stacker device to which an embodiment of the present invention is applied.

FIG. 4 is a schematic configuration diagram of a stacker device.

FIG. 5 is a side view of a main part of a conventional stacker device.

[Explanation of symbols]

 31 Guide plate 35 Guide surface 36 Sliding contact plate 37 Double-sided adhesive tape

Continuation of the front page (56) Reference JP-A 63-259546 (JP, A) JP-A 50-564 (JP, A) JP-A 63-41339 (JP, A) JP-A 1-117151 (JP , A) JP-A-63-101271 (JP, A) Actually opened 62-191739 (JP, U) Actually opened 58-170650 (JP, U) Actually opened 58-158052 (JP, U) Actually opened 57-155147 (JP, U) Actually opened 63-56155 (JP, U) Actually opened 62-79754 (JP, U) Actually opened 58-184441 (JP, U)

Claims (1)

(57) [Claims] 1. A guide plate, and a sliding contact plate which is attached to a guide surface of the guide plate and has a directivity for guiding the paper in a certain direction while contacting the paper at innumerable points. Equipped with the above
The guide plate is made of a conductive plate and
Sliding contact plate is a guide plate with conductive double-sided adhesive tape
A paper guide plate for a stacker device, which is characterized by being attached .