JPH06171651A - Envelope - Google Patents

Abstract

PURPOSE:To provide an envelope whose component pieces in pair can have the same moving quantity when the envelope is held between a pair of rollers and carried thereby. CONSTITUTION:In an envelope consisting of an envelope body A adapted to be held between a pair of rollers of different rigidity and carried thereby and having a pair of component pieces P1 and P2 for forming the two faces of the envelope body A, the envelope body A is provided with a pressure-sensitive adhesive tape 1 for preventing the relative movement in the facial directions of the component pieces P1 and P2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an envelope used in an image forming apparatus such as a copying machine or a laser printer and conveyed by a pair of rollers.

[0002]

2. Description of the Related Art Conventionally, an envelope used in an electrophotographic or image forming apparatus such as a laser printer or a copying machine is shown in FIG.
Reference numerals 101 and 102 are a pair of constituent pieces that form the front surface and the back surface of the envelope body 100, and 103 is a flap portion to which an adhesive is applied for sealing.

Envelopes come in various sizes and shapes. Typical examples are COM10 in the US and DL in Europe.

Further, as a conventional fixing device, as shown in FIG. 10, due to its high reliability and the like, a rigid fixing roller 10 is used.
A fixing device including 4 and a pressure roller 105 formed of a rubber roller having an elastic surface has been widely used. Then, the envelope body 100 includes the rollers 104 and 105.
Is rotated and is nipped and conveyed in the direction of the arrow.

[0005]

However, the envelope according to the above conventional example has a drawback that wrinkles are generated when passing through the fixing device. When two sheets of paper are fed by the fixing device, the envelope has wrinkles due to the difference in the conveyance speed of the front and back sheets.

The principle of wrinkle formation will be described with reference to FIG.
That is, the angular velocity of the fixing roller 102 is ω, and the component piece 10 is
Assuming that the thickness of 1 is t, the velocity V _P1 of the component piece 101 is: V _P1 = R ₁ ω = [R + (1/2) t] · ω Similarly, the velocity V _P2 of the component piece 102 is V _P2 = R ₂ · ω = [R + (3/2) t] · ω.

Therefore, the rear surface side component piece 102 and the front surface side component piece 101 relatively move in the surface direction, and t / [R + (2/2) t] × 100 (%) ≈ (t / R)
It is sent by x100 (%) faster, and the difference in the feed amount is accumulated at the rear end of the envelope 100, and the component piece 102 becomes wrinkled.

For example, an envelope length of 200 mm and a paper thickness of 0.1 m
When m and R = 10 mm, the difference between the front and back feed amount is 2 m
It will reach m. This can also be confirmed by sandwiching two sheets of plain paper between the fixing rollers instead of the envelope and conveying them, and examining the difference in the feeding amount.

To solve the above problem, the fixing roller 10
The radius R of 4 should be increased, but the size of the device should be increased.
It causes cost increase and cannot be infinitely increased.

The present invention is intended to solve the above problems, and when the envelope body is nipped and conveyed by a pair of rollers,
An object of the present invention is to provide an envelope in which the conveyance amounts of a pair of constituent pieces can be matched.

[0011]

In order to achieve the above object, the present invention provides an envelope main body which is sandwiched and conveyed by a pair of rollers having different rigidity, and the envelope main body constitutes a pair of constituent pieces constituting the front and back of the envelope main body. In the envelope having the above, the envelope body is provided with a fixing member for preventing relative movement of the pair of component pieces in the surface direction.

The fixing member can be peeled off from the envelope body.

The fixing member is an adhesive tape attached to a pair of constituent pieces.

The fixing member is a pair of friction members respectively provided on a pair of component pieces, and the pair of friction members have irregularities that engage with each other.

The fixing member is an adhesive.

[0016]

When the envelope body is nipped and conveyed by rotating the pair of rollers, the roller having lower rigidity is elastically deformed, so that the envelope body comes into close contact with the roller having higher rigidity to form an arc.

Although the angular velocities of the constituent pieces located inside are different from the angular velocities of the constituent pieces located outside, since the pair of constituent pieces are fixed in the surface direction by the fixing member, the conveying amount of the pair of constituent pieces is Will be equal.

Further, the fixing member can be peeled off from the envelope body.

Further, the pair of constituent pieces are fixed in the surface direction by the adhesive force of the adhesive tape.

Further, the pair of constituent pieces are fixed in the surface direction by the engaging force of the unevenness of the pair of friction members.

Further, the pair of constituent pieces are fixed in the surface direction by the adhesive force of the adhesive.

[0022]

【Example】

(Embodiment 1) First, Embodiment 1 of the present invention will be described with reference to FIGS. FIG. 1 is a rear view of the envelope body A of the first embodiment. Reference numeral 1 is a slip prevention tape as a peelable fixing member, and in this embodiment, an adhesive tape having a predetermined adhesive surface B was used.

The deviation prevention tape 1 is attached to the lower side (inner side) of the flap P ₃ so as to fix the inner surfaces of the back surface P ₂ and the front surface P ₁ as a pair of constituent pieces. FIG. 1B is a view of the envelope body A viewed from the back side with the flap P ₃ opened, and shows how the deviation prevention tape 1 is attached so that it can be seen clearly. FIG. 1C is a development view of the envelope body A.
FIG. 2 is a cross-sectional view of the envelope. The black surface of the deviation prevention tape 1 is an adhesive surface and fixes the back surface P ₂ and the front surface P ₁ .

FIG. 3 shows that the envelope body A is conveyed by the fixing device of the copying machine. Reference numeral 50 is a fixing roller having high rigidity such as metal, and 51 is a pressure roller having low rigidity such as rubber-like elastic body.

The envelope body A is nipped and conveyed by the rotation of the rollers 50 and 51.

When the envelope body A is nipped and conveyed by rotating the pair of rollers 50 and 51, the roller 51 having a lower rigidity elastically deforms, so that the envelope body A comes into close contact with the roller 50 having a higher rigidity to form an arc shape. Becomes

Here, when the angular velocity of the fixing roller 50 is ω and the thickness of the paper is t, the transport velocity V _P1 of the surface P ₁ is V _P1 = R ₁ ω = [R + (1/2) t] Similarly to ω, the conveyance speed V _P2 of the back surface P ₂ is V _P2 = R ₂ ω = [R + (3/2) t] · ω.

However, in the present invention, since the front surface P ₁ and the back surface P ₂ are fixed by the deviation prevention tape 1 so as not to be displaced in the surface direction, the actual conveyance amounts are the same. Therefore, wrinkles do not occur on the envelope body A. Further, there is no deviation or stain on the image formed on the envelope body A. In particular, the effect was remarkable in the envelope that absorbed moisture.

This is the surface P which has been a problem in the conventional example.
_This is because the difference in feed amount between the back surface P ₂ and the back surface P ₂ is eliminated by the deviation prevention tape. After the printing is completed, the deviation prevention tape 1 is peeled off, the contents are put in the envelope and sealed, and the envelope according to the present invention is not inferior to the conventional product in operability.

The slip prevention tape 1 in this embodiment is a menting tape 810 in which synthetic rubber adhesive (component) acrylic rubber synthetic rubber is dispersed in an organic solvent such as normal hexane. It has been made possible by using. For the slip prevention tape,
Of course, the present invention is not limited to this, and any other equivalent product can be used.

Although the peelable adhesive tape is used in the above embodiments, the adhesive tape is not limited to this, and the peelable adhesive tape may be used as the front surface P ₁ and the back surface P ₂ , for example, a spray glue 55 manufactured by 3M Co. The same effect could be obtained by applying a rubber adhesive). (Embodiment 2) Next, FIG. 4 shows an example using a double flap type. A feature of the double flap type is that not only the flap P ₃ but also the folded back portion of the upper end portion of the back surface P ₂ is another flap P ₄ .

The double-flap envelope body A has a complicated structure, and it has wrinkles when passing through the fixing device, image shift,
Dirt is very likely to occur.

However, the peelable deviation prevention tape 1 according to the present invention is attached, and the back surface P ₂ and the front surface P are provided via the flap P _4.
By fixing ₁ , it was possible to eliminate the difference in the feed amount between P ₂ and P ₁ and completely prevent wrinkles, image shifts, and stains. (Third Embodiment) Next, a third embodiment of the present invention will be described with reference to FIGS. The same parts as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted. (A) is a back view of the envelope, (B)
Is a rear view of the opened flaps P _3. FIG. 6C is a back view of the envelope with the deviation prevention tape 2 removed.

In this embodiment, the flap P _{3 of the} envelope body A is
A seal portion 3 which is wet with a sticky adhesive for finally sealing the envelope is provided on the portion, and a slippery mold release for covering the flap-side surface 2b of the deviation prevention tape 2 with the seal 3 and the surface, whereas the opposite surface 2a is a releasable adhesive surfaces for displacement prevention, so as to fix the inner envelope backside P ₂ and envelopes surface P ₁ in 2a surface, in this single anti-displacement tape The feature is that they do not serve two functions.

The effect of this embodiment is that the back surface P ₂ and the front surface P ₁ are fixed when the flap P ₃ is bent as shown in FIG. No wrinkles, image shifts, and stains are prevented, and the same effect as in the first embodiment is obtained. Furthermore, after the printing is completed, if the contents are put in an envelope and the deviation prevention tape 2 is peeled off, the adhesive sticker 3 on the flap portion can easily perform the one-touch sealing.

In the envelope of Example 1, the flap may be adhered to the back surface by the adhesive of the flap portion when passing through the fixing device in a high humidity environment, and the envelope after printing may not be opened. In the example envelope, such a problem never occurs due to the effect of the deviation prevention tape 2. As described above, the envelope of this embodiment is easier to use than the envelope of Embodiment 1. (Fourth Embodiment) Next, a fourth embodiment of the present invention will be described with reference to FIG. (A) is a back view of the envelope, (B) is a development view (inner surface side), and (C) is a cross-sectional view of the deviation prevention member in the present embodiment.

In this embodiment, an ultra-thin magic tape (registered trademark) is used as a deviation prevention member on the inside and outside of the envelope.
The feature is that 4 and 5 are provided. These Velcro tapes 4 and 5 have a length of about 5 as shown in the enlarged sectional view of FIG.
Nylon fiber protrusions of 0 mm, width of about 10 mm, thickness of about 0.1 mm, and height of about 0.5 mm are formed on the surface to form minute irregularities. The thickness is about 1 mm each, but when they come into close contact, It is about 1.5 mm in total for two sheets and repels with a large frictional force against the displacement force.

Also in the third embodiment, due to the effect of the magic tape, there is no difference in the feed amount between the front surface P ₁ and the back surface P _{2, and} a good print can be obtained. From this, it was found that the deviation preventing member is not limited to the adhesive tapes of Examples 1 and 2, and good results can be obtained as long as the front surface and the back surface of the envelope are fixed against the deviation. (Fifth Embodiment) Next, a fifth embodiment of the present invention will be described with reference to FIG. (A) is a back view of the envelope, and (B) is a developed view (inner surface side). In this embodiment, a normal paper-bonding adhesive (the adhesive itself cannot be peeled off) is used as the minute portion 6 on the inner surface of the envelope.
It is characterized in that the front surface P ₁ and the back surface P ₂ are fixed in a piecewise manner (about 3 mm square), and printing is performed in this state. After printing, remove the adhesive and put the contents in an envelope to seal it.

In this embodiment, P ₁ and P ₂ are used for printing.
Is fixed and there is no difference in feed amount, so wrinkles, image shifts,
The occurrence of unevenness is prevented. Further, even when the adhesive of 6 was peeled off, since the adhesive was applied only to a minute portion, the envelope was hardly damaged and good results could be obtained.

[0040]

When the envelope body is nipped and conveyed by rotating the pair of rollers, the roller having lower rigidity is elastically deformed, so that the envelope body comes into close contact with the roller having higher rigidity to form an arc.

Although the angular velocities of the constituent pieces located inside are different from the angular velocities of the constituent pieces located outside, the conveying amount of the pair of constituent pieces is fixed because the pair of constituent pieces are fixed in the surface direction by the fixing member. Will be equal. Therefore, wrinkles do not occur.

[Brief description of drawings]

1A and 1B are plan views of an envelope of Example 1, FIG.
(C) is a development view of the envelope.

2 is a cross-sectional view of the envelope of FIG.

FIG. 3 is a side view of the envelope according to the first embodiment during conveyance.

4A and 4B are plan views of the envelope of the second embodiment,
(C) is sectional drawing of the same envelope.

5A, 5B, and 5C are plan views of the envelope of the third embodiment, and FIG. 5D is a plan view of the deviation prevention tape of the same embodiment.

6 is a cross-sectional view of the envelope of FIG.

7A is a plan view of the envelope of Embodiment 4, FIG. 7B is a development view of the envelope, and FIG. 7C is a side view of the deviation prevention member of the embodiment.

FIG. 8A is a plan view of the envelope of Example 5, and FIG. 8B is a development view of the envelope.

9A is a plan view of a conventional envelope, and FIG. 9B is a cross-sectional view of the same envelope.

FIG. 10 is a view showing the envelope shown in FIG. 9 during conveyance.

[Explanation of symbols]

1 Misalignment prevention tape A Envelope body P ₁ front surface P ₂ back surface

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Koichi Suwa 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc.

Claims (5)

[Claims] 1. An envelope having an envelope main body sandwiched and conveyed by a pair of rollers having different rigidity, the envelope main body having a pair of constituent pieces constituting front and back sides of the envelope main body, wherein the envelope main body has a pair of constituent pieces. An envelope provided with a fixing member for preventing relative movement in the plane direction. 2. The envelope according to claim 1, wherein the fixing member is peelable from the envelope body. 3. The envelope according to claim 1, wherein the fixing member is an adhesive tape attached to a pair of constituent pieces. 4. The envelope according to claim 1, wherein the fixing member is a pair of friction members respectively provided on a pair of component pieces, and the pair of friction members have irregularities that engage with each other. 5. The envelope according to claim 1, wherein the fixing member is an adhesive.