JPH03217880A - Developer cartridge - Google Patents

Abstract

PURPOSE:To prevent a sealing member from being easily peeled off by vibration, etc., by forming the adhesive surface of the peeling start end of the sealing member for sealing an opening part in a chevron shape and sticking a seal turn-up part with one side of the chevron shape as a turn-up line at the time of transporting a cartridge. CONSTITUTION:As to the cartridge 1, the sealing member 4 for sealing the opening part 3 s turned up along the one side (a) of the adhesive surfaces (a) and (b) in the chevron shape on a seal peeling start end side to form and stick the turn-up part 5. Therefore, adhesive force which sufficiently resists to load caused by frictinal force at the time of transporting the cartridge is obtained and the member 4 is prevented from being easily peeled off. In the case of replenishing the developer, the member 4 is easily peeled off from a top part without peeling resistance by releasing the stick of the turn-up part 5 and pulling the turn-up part 5 with the top part of the chevron shape of the adhesive surfaces (a) and (b) as an origin.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a developer cartridge (hereinafter referred to as a cartridge) that supplies developer to a developing device of a recording apparatus using an electrostatic recording method.

[Conventional technology]

2. Description of the Related Art To supply developer to a developing device of a recording apparatus employing an electrostatic recording method, a container that is detachably attached to the developing device, a so-called cartridge, is often used.

The opening of this type of cartridge is sealed with a sealing member, and the sealing member is peeled off when developer is replenished. This seal member is attached by folding back the seal peeling start end side in the peeling direction to form a folded part so that the seal can be peeled off by pinching and pulling at the time of peeling.

When the seal member is peeled off, the adhesive shape at the peel start end and the peel end end is protruded into a chevron shape in order to reduce the peel resistance at the peel start end and the peel end end to make the seal member easier to peel off. has been proposed (Japanese Unexamined Patent Publication No. 14865/1983).

[Problem that the invention seeks to solve]

However, in this proposed structure, the adhesive shape at the beginning of peeling is chevron-shaped, so the top of the chevron forms a point structure in the peeling direction, and although it is superior in that the peeling resistance at the beginning of peeling is almost zero, Due to vibrations during transportation of the cartridge packaging case, an extremely large frictional force is generated between the folded part of the seal folded part, which is not in close contact with the cartridge circumferential surface, and the cartridge packaging case, and as a result, the folded part of the seal folded part When a large load is applied to the bent portion, the sealing member easily peels off from the bonded portion of the dot structure where the peeling resistance is almost zero, causing the problem that the developer overflows from the cartridge.

In view of the above-mentioned points, an object of the present invention is to provide a cartridge whose seal member is easy to peel off and which is free from the risk of the seal peeling off when the cartridge is transported.

[Means for solving problems]

The main means adopted by the present invention in order to achieve the above object is, in a developer cartridge, in which the adhesive surface of at least the peeling start end of the sealing member that seals the opening is formed into a chevron shape. A developer cartridge is formed by forming a seal fold-back portion on the peeling start end side of the seal member, and the seal fold-back portion is folded and held using the adhesive surface of one side of the chevron shape as a fold line.

[Effect]

According to the above configuration, in the cartridge 1 housed in the cartridge packaging case, the sealing member 4 is bonded with one side a (or one side b) of the chevron-shaped adhesive surfaces a and b as a folding line on the seal peeling start end side. It is folded back along surface a (or adhesive surface b) to form a folded portion 5 and held. Therefore, the bent portion 5a of the folded portion 5 has adhesive force sufficient to withstand the load due to frictional force during cartridge transport, so that the sealing member is not easily peeled off from the peak of the chevron-shaped adhesive.

When peeling off the seal when replenishing the developer, release the grip on the seal folded part 5 and pull the seal folded part 5 using the peaks of the chevron-shaped adhesive surfaces a and b as a starting point. It is gradually peeled off from the top.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples embodying the present invention will be described below with reference to the accompanying drawings, FIGS. 1 and 3, to provide an understanding of the present invention.

In addition, the following example is an example embodying the present invention,
It is not intended to limit the technical scope of the present invention.

A cartridge according to the present invention will be explained with reference to FIG.

A handle 2 for operation is attached to one end of the cartridge 1 with both ends closed.
is provided. A slit-shaped opening 3 is formed on the circumferential surface of the cartridge 1, and is sealed with a sealing member 4. End opposite to handle 2 (end where seal peeling starts)
The sealing member 4 is folded back to form a folded part 5,
When inserting the cartridge l into the developing device, the cartridge l is grasped and pulled.

The opening 3 is sealed by the sealing member 4 by forming adhesive surfaces a and b in the shape of a chevron that protrude in the opposite direction to the peeling direction of the sealing member 4 on the seal peeling start end side, and a chevron-shaped adhesive surface b that protrudes in the same direction as the peeling direction of the sealing member 4. adhesive surfaces c, d, and these adhesive surfaces a, b, c,
It has adhesive surfaces e and f connecting the cartridge d and is in close contact with the circumferential surface of the cartridge 1.

A protrusion 6, which is a guide member, is provided on the circumferential surface of the end of the cartridge 1 on the side where the seal peeling starts.

As shown in FIG. 2, which is a developed view of the cartridge 1 shown in FIG. The tape 7 is folded back in the direction shown in FIG.

The cartridge I configured in this manner is housed in a cartridge packaging case and provided to a user.

Friction occurs between the sealing member 4 of the cartridge 1 housed in the packaging case and the inner surface of the packaging case due to vibrations during transportation, etc., which acts on the sealing member 4 as unnecessary peeling force.

When this peeling force acts in a direction perpendicular to the adhesive surfaces a, b, c, d, e, f, the adhesive area per unit length in that direction is large, and therefore the adhesive force is sufficient to resist this peeling force. has. Therefore, the seal member 4 may be damaged due to vibrations during transportation, etc.
There is no word that can be removed.

On the other hand, when the peeling force acts in the direction of peeling off the seal, the peeling occurs on the folded part (bent part) 5a of the seal folded part 5 that is not in close contact with the circumferential surface of the cartridge 1, that is, that is floating from the circumferential surface of the cartridge 1. Although a force is applied, since the seal folded portion 5 is folded back along the adhesive surface a with the adhesive surface a as a folding line, the adhesive force at the folded portion 5a is strong enough to resist the above peeling force. Therefore, the seal folded portion 5 is not pulled, and the seal member 4 is not peeled off from the peak of the chevron very easily as in the conventional case.

Next, referring to FIG. 3, the developer replenishment procedure using the cartridge 1 will be described.

The cartridge 1 of the present invention shown in FIG. 1 is removed from the cartridge packaging case, the native tape 7 is removed, and the seal folded portion 5 is released.

Then, holding the handle 2 with the left hand, the protrusion 6 is fitted into the groove 9 of the developing device 8, and the cartridge 1 is inserted.

This groove 9 is set to a length such that the guide restriction is released when the insertion of the cartridge 1 is completed.

At this time, hold the seal folded part 5 with your right hand and align the folded part 5 in the same direction as the longitudinal direction of the seal member 4 (opening 3) with the peaks of the chevrons of the adhesive surfaces a and b as the base point while inserting the cartridge 1. Pull in the seal peeling direction X. By this pulling operation, the sealing member 4 is sequentially peeled off from the chevron-shaped top portions of the bonding surfaces a and b, where the bonding area per unit length in the peeling direction is small. Therefore, at the seal peeling start end, the seal member 4 can be peeled off with only a small amount of force.

When the cartridge 1 is further inserted, the adhesive surfaces e and f are sequentially peeled off, and when the insertion of the cartridge l is completed, the chevron-shaped adhesive surfaces b and c are peeled off and the opening 3 is fully opened. At the end of the seal peeling, the peeling force is almost the same as that of the other adhesive parts e and f.

Thereafter, developer is replenished by rotating the cartridge 1 approximately 180 degrees.

According to the above example, the peeling of the seal is caused by cartridge 1.
Although the length of the seal folded part 5 is defined so that the seal can be peeled off after the cartridge is inserted and inserted, the folded part 5 may be made longer than the opening 3. Further, although the description has been made using a cylindrical cartridge as an example, the shape can be changed as appropriate, such as making it rectangular.

〔Effect of the invention〕

As described in detail above, according to the present invention, when the cartridge is transported, the folded part of the seal is folded and held with one side of the chevron-shaped adhesive surface as the fold line, so that it is not easily peeled off due to vibrations etc. during transport. do not have. On the other hand, when replenishing the developer, the seal member can be peeled off from the top of the chevron-shaped adhesive surface by releasing the folded portion of the seal, and the seal is peeled off with almost no resistance.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the developer cartridge of the present invention, and FIG.
The figure shows an exploded view of the developer cartridge shown in Figure 1.
FIG. 3 is a perspective view showing a developer replenishment procedure using the developer cartridge of the present invention. DESCRIPTION OF SYMBOLS 1... Cartridge, 3... Opening part, 4... Seal member, 5... Seal folded part, a, b, c, d,
e, f...Adhesive surface

Claims (1)

[Scope of Claims] A developer cartridge in which an adhesive surface at least at a peeling starting end of a sealing member for sealing an opening is formed in a chevron shape, a seal folded portion being formed at a peeling starting end side of the sealing member, The developer cartridge is characterized in that the seal folding portion is folded and held using the adhesive surface of one side of the chevron as a folding line.