JPH0891616A - Sponge roller - Google Patents

Abstract

PURPOSE: To recycle rotating shafts for improved economy by resources saving, and reduce the amount of wastes resulting in public pollution by separating a sponge roller member from the rotating shaft easily. CONSTITUTION: A linear member 3 whose end is formed with continuously mounted ring-shaped parts 4 is installed between a rotating shaft 2 and a roller member 1 with one end of the rotating shaft 2 passed through the ring-shaped part 4. By pulling the linear member 3, the ring-shaped part 4 is put between the bonded surfaces of the roller member 1 and the rotating shaft 2 to make the sponge member 1 peel off from the periphery part of the rotating shaft 2, and break off bonding relationship of the roller member 1 with the rotating shaft 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improved technique of a sponge roller which is widely used in a wide variety of fields such as for conveying recording paper in an image forming apparatus.

[0002]

2. Description of the Related Art The above-mentioned image forming apparatus is used for transporting, separating or discharging recording paper, transporting toner collected from the surface of a photoconductor, transfer / charging, and toner replenishment for a developing device. Various types of sponge rollers are provided in various places according to their functions.

[0003]

These sponge rollers are generally constituted by a long tubular or a plurality of roller-shaped roller members made of sponge, which are fitted and held on a rotary shaft by an adhesive means. However, once the sponge roller member is bonded to the rotary shaft, it is very difficult to separate the sponge roller member from the rotary shaft.

For this reason, when the sponge roller member is worn out over time and is replaced with a new sponge roller, especially in the case of a toner transporting or replenishing sponge roller, clogging of the toner causes early porosity. Since the sponge roller is frequently replaced, it is very difficult or impossible to separate the roller members even if the rotating shaft of the replaced sponge roller is recycled. At the present time, it had to be discarded, which was very uneconomical.

The present invention has been made in view of the above circumstances, and a rational technique for easily separating the roller member from the rotary shaft has been developed to facilitate the recycling of the rotary shaft. The present invention provides a sponge roller.

[0006]

In order to achieve the above object, the present invention provides a rotating shaft with at least one sponge roller member having a long tubular shape or a plurality of roller shapes. In the sponge roller consisting of, a linear member having a ring-shaped portion continuously provided on one end side thereof is provided between the rotation shaft and the roller member in a state where the one end side of the rotation shaft is inserted through the ring-shaped portion, It is characterized in that the other end side of this linear member is led out from the end face on the other end side of the rotation axis of the roller member.

[0007]

According to the above characteristic structure, when the other end of the linear member provided on the sponge roller is pulled, the ring-shaped portion continuously provided on one end of the linear member moves while closely contacting the rotary shaft. Then, the ring-shaped portion is separated between the bonding surfaces of the roller member and the rotary shaft so that the sponge roller member is peeled off from the peripheral surface of the rotary shaft, so that the edge of the sponge roller member bonded to the rotary shaft is separated. Will be cut.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a sponge roller according to an embodiment of the present invention. The sponge roller is used for, for example, transporting, separating, or discharging recording paper in an electrostatic photocopier, and a photosensitive member in a cleaning device. It is used for conveying collected toner from the body surface, for transferring and charging around the peripheral portion of the photoconductor, and for supplying toner to the developing device.

This sponge roller comprises a long, cylindrical sponge roller member 1 held on a metallic rotary shaft 2 by means of bonding. When adhering to, the loop r is formed on one end side of the linear member 3 by, for example, a piano wire, and the other end side of the linear member 3 is inserted through the loop r to connect to the one end side of the linear member 3. A ring-shaped portion 4 that holds the rotating shaft 2 so as to be capable of reducing its diameter is formed.

Then, one end side of the rotary shaft 2 is inserted through the ring-shaped portion 4, the linear member 3 is stretched to the other end side of the rotary shaft 2, and the linear member 3 is wrapped. The roller member 1 made of sponge is adhesively fitted to the rotary shaft 2, and at this time, the other end of the linear member 3 extending from the end surface of the roller member 1 on the other end side of the rotary shaft is sponge. The other end of the linear member 3 is wrapped around the rotary shaft 2 so as not to interfere with the rotation of the roller, and the linear member 3 is fixed to the rotary shaft 2 with an adhesive that can be easily unlocked.

According to the sponge roller having such a structure, the sponge roller member 1 is worn down for a long time, or the porosity of the sponge roller member 1 is reduced due to the clogging of the toner. When the sponge roller is replaced with a new one, the used sponge roller that has been replaced is fixed to, for example, a vise, and the other end of the linear member 3 provided on the sponge roller is pulled. 4 moves between the roller member 1 made of sponge and the rotating shaft 2 while closely contacting the rotating shaft 2.

That is, as shown in FIGS. 2 and 3, the roller member 1 made of sponge is peeled off from the peripheral surface of the rotary shaft 2,
The ring-shaped portion 4 moves so as to be divided between the bonding surfaces of the roller member 1 and the rotating shaft 2, so that the edge of bonding of the sponge roller member 1 to the rotating shaft 2 is cut off. When the edge of the adhesive is cut over the entire length of the sponge roller member 1, the sponge roller member 1 is simply loosely fitted and held with respect to the rotating shaft 2. The sponge roller member 1 can be easily separated from the rotary shaft 2.

As the ring-shaped portion 4, a loop r is formed on one end side of the linear member 3 and the other end side of the linear member 3 is inserted through this loop r. The ring-shaped part 4 tightens as you pull the
If it is feared that the ring-shaped portion 4 will bind the rotating shaft 2, the linear member 3 may be fixed to the ring-shaped portion 4 so that the diameter of the ring-shaped portion 4 is not reduced. Alternatively, as shown in FIG. 4, as the ring-shaped portion 4, the peripheral portion has the edge a.
It may be configured by a ring-shaped cutter formed in the above, and may be changed to a form in which this is connected to the linear member 3.

In any of the above embodiments,
The number of linear members 3 is not limited to one,
For example, the linear member 3 is made to have two by providing a phase of 180 degrees, or as shown by the phantom line in FIG.
It is possible to change the ring-shaped portion 4 in parallel by making a plurality of linear members 3 and pulling them substantially at the same time, for example, by changing the phase to 0 degrees to three. That is, it is possible to cut the edge of adhesion of the sponge roller member 1 to the rotating shaft 2 without twisting the ring-shaped portion 4, which is preferable.

In each of the above embodiments, one cylindrical sponge roller member 1 is held on the rotating shaft 2.
The sponge roller to be embodied by the present invention is not limited to this. For example, a sponge roller holding a plurality of roller-shaped sponge roller members on one rotating shaft may be embodied. At this time, the other end of the linear member, in which the ring-shaped portion is continuously provided on one end, can be led out from the end face of the roller member on the other end of the rotation axis (that is, the end face of the outermost roller member). It is essential.

Further, in the embodiment, the linear member 3 is stretched over the peripheral surface of the rotary shaft 2, and the roller member 1 is adhesively fitted to the rotary shaft 2 so as to wrap the linear member 3. At this time, a concave portion into which the linear member 3 is inserted is formed over the entire length of the inner surface portion of the roller member 1, or is formed over the peripheral surface portion of the rotary shaft 2, for example, between the shaft supporting portions, and the concave portion is formed. It is preferable to make the linear member 3 recessed in the roller member 1 because the roller member 1 made of sponge can be prevented from being locally compressed and deformed.

[0017]

As described above, according to the sponge roller of the present invention, the edging of the adhesion between the rotary shaft and the sponge roller member is achieved by simply pulling the linear member. With the introduction of the technology, the separation of the sponge roller member from the rotating shaft, which has been difficult until now, can be achieved very easily, which leads to the recycling of the rotating shaft and the economic saving of resources. At the same time as improving the property, it is possible to contribute to the reduction of the amount of waste that leads to pollution.

[Brief description of drawings]

FIG. 1 is a perspective view of a sponge roller according to an embodiment of the present invention.

FIG. 2 is an explanatory view showing a state in which a rotary shaft and a roller member made of sponge are cut off by cutting a part thereof.

3 is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is a perspective view showing another embodiment of the ring-shaped portion.

[Explanation of symbols]

1 ... Sponge roller member, 2 ... Rotating shaft, 3 ... Linear member, 4 ... Ring-shaped part.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location G03G 15/02 101 15/16 103 21/10

Claims (1)

[Claims] 1. A sponge roller formed by holding at least one sponge roller member on a rotating shaft,
A linear member in which a ring-shaped portion is connected to one end side is provided between the rotary shaft and the roller member in a state where the one end side of the rotary shaft is inserted into the ring-shaped portion, and the linear member A sponge roller, wherein the other end side is led out from an end surface on the other end side of the rotation axis of the roller member.