JP3313853B2 - Optical deflection scanner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light deflection scanning device used for an image recording device such as a laser printer or a laser facsimile.

[0002]

2. Description of the Related Art Conventionally, this type of light deflection scanning apparatus is shown in FIG.
As shown in FIG. 7, a laser beam L ₀ emitted from a semiconductor laser unit 107 is deflected and scanned by a rotary polygon mirror 102 rotated by a motor 106, and the deflected and scanned laser beam L ₀ is converted into a spherical lens 103a and a toric lens 103b. the optical component 103 composed of imaged on the photosensitive member of the photosensitive drum D _0, is configured as an electrostatic latent image is formed on the photosensitive member by the sub-scanning by the main scanning and the photosensitive drum D ₀ by the rotating polygon mirror 102 I have. In this case, a part of the laser light L ₀ deflected and scanned by the rotary polygon mirror 102 is reflected by the detection mirror 104 as a scanning start signal and received by the optical sensor 105, and a trigger for starting writing modulation by the optical sensor 105. Converted to a signal.

In the above optical deflection scanning apparatus, the semiconductor laser unit 107, the rotary polygon mirror 102, the optical component 10
3. The detection mirror 104 and the optical sensor 105 are respectively attached to predetermined portions of the housing 101. Among them, the optical component 103 is used to reduce the number of components and reduce the processing cost. Is bonded by an adhesive.

[0004]

However, according to the above-mentioned conventional technology, when the optical component is peeled from the housing to check the adhesive strength for the process control in the manufacturing process or to separate the material in recycling, There is a problem that the optical component is damaged when the optical component is forcibly peeled off from the housing.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and provides an optical deflection scanning apparatus capable of easily peeling off an optical component bonded to a housing without damaging the optical component. It is intended to be realized.

[0006]

In order to achieve the above object, an optical deflection scanning apparatus according to the present invention comprises a light source for generating a light beam and a light source for deflecting and scanning the light beam generated by the light source. an optical deflection scanning means, in <br/> optical deflection scanning apparatus having an optical component, an imaging the deflected scanning light beam on the photosensitive member, the optical component is bonded by an adhesive to the housing , before Kikatamitai adhesive is applied
A plurality of bonding surfaces, and a depth provided between the plurality of bonding surfaces.
A is a shallow flank and, at the site where the flank is formed, provided with a blind hole which is closed by a thin skin portion
It is characterized in that there.

[0007]

The thin skin portion of the non-through hole formed in the housing can be easily punched out to form a through hole. Therefore, a tool or the like is inserted into the through hole and the optical member bonded to the housing from the housing side. The component can be easily peeled off by pressing. In addition, since the non-through hole is closed by a thin skin portion, a minute foreign substance such as dust does not enter the housing from the outside.

[0008]

An embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows a first embodiment of an optical deflection scanning apparatus according to the present invention.
FIG. 3 is an explanatory diagram illustrating an entire configuration of an example.

The light deflection scanning device of this embodiment includes a semiconductor laser unit 7 as a light source for generating a light beam,
A rotary polygon mirror 2 serving as a light deflection scanning means for deflecting and scanning a laser beam L which is a light beam generated by a semiconductor laser unit 7; and an optical component 3 including a first lens 3a and a second lens 3b. , A mirror 4 and an optical sensor 5, which are respectively attached to predetermined portions of the housing 1.

In the light deflection scanning device of the present embodiment, the laser light L generated by the semiconductor laser unit 7 is
The light is deflected and scanned by the rotating polygon mirror 2 rotated by the motor 6 and forms an image on the photosensitive member of the photosensitive drum D via the optical component 3. The main scanning by the rotating polygon mirror 2 and the photosensitive drum D
The electrostatic latent image is formed on the photosensitive member by the sub-scanning. In this case, a part of the laser beam L deflected and scanned by the rotary polygon mirror 2 is reflected by the mirror 4 as a scanning start signal and received by the optical sensor 5, and is used as a trigger signal for starting writing modulation by the optical sensor 5. Is converted.

In this embodiment, the optical component 3 is adhered to the housing 1 by an adhesive. Here, the second lens 3b will be described as an example, but the same applies to the case of the first lens 3a. It is.

As shown in FIG. 2, on the surface of the housing 1 where the second lens 3b is bonded, three bonding surfaces 12 are provided between the bonding surfaces 12 so as to have a flank surface 14 having a small depth. Is formed in a state where the second lens 3 is provided on each of the bonding surfaces 12.
Positioning pins 13 each having a height of about several tens of microns for supporting and positioning b at three points are protruded. Further, in the portion where the flank 14 of the housing 1 is formed, a non-penetrating hole 10 is formed from the counter flank side, and the flank side of each non-penetrating hole 10 is formed by a thin skin portion 11. It is closed.

In order to adhere the second lens 3b to the housing 1, a predetermined amount of an ultraviolet curable adhesive 15 as an adhesive is applied to a portion of each adhesive surface 12 excluding each positioning pin 13. After the second lens 3b is placed on the positioning pin 13, the ultraviolet ray is irradiated to cure the ultraviolet curing adhesive 15.

This embodiment has the following effects.

When confirming the adhesive strength between the second lens 3b and the housing 1, a through-hole is formed by punching the thin skin portion 11 of the non-through hole 10, and then the second lens 3b is connected to the above-described lens. The bonding strength can be confirmed by inserting the tool through the through hole and pressing the second lens 3b to peel it off.

When separating materials in recycling, the second lens 3b can be separated from the housing by pressing the second lens 3b through the thin skin portion 11 to peel it off.

Furthermore, since the non-through hole 10 is closed by the thin skin portion 11 when the optical deflection scanning device is used, minute foreign matter such as dust enters the inside of the housing and causes the optical component 3 and the rotary polygon mirror 2 and the like. There is no contamination and deterioration of performance.

Next, a second embodiment will be described.

As shown in FIG. 3, in this embodiment, an unpenetrated hole 20 is formed from the flank 14 side of the housing 1 and is formed by a thin skin portion 21 formed on the counter flank side of the housing 1. The point that the through hole 20 is closed is different from the first embodiment. However, the other parts are the same as those of the first embodiment, so the same reference numerals are given and the description thereof is omitted.

In this embodiment, when checking the bonding strength between the second lens 3b and the housing 1, the second lens 3b is
Even after bonding, the thin skin portion 21 is easily removed to form a through hole, and the bonding strength can be confirmed by peeling the second lens 3b in the same manner as in the first embodiment. The first embodiment is different from the first embodiment in that an effect of being able to arbitrarily extract and inspect an existing item is obtained. However, other effects are the same as those of the first embodiment.

In each of the above embodiments, the thin skin portion is provided at the end of the non-through hole opposite to the opening, but the thin skin portion may be provided at an arbitrary portion in the depth direction of the non-through hole. . Also,
The number of bonding surfaces is not limited to three, but may be two or four or more.

[0023]

Since the present invention is configured as described above, the following effects can be obtained.

At the time of confirming the adhesive strength between the housing and the optical component and separating the material in recycling, the thin skin portion closing the non-through hole is removed to form a through hole, and a tool or the like is inserted through the through hole. The optical component can be easily peeled from the housing without being damaged by pressing the optical component.
In addition, when the optical deflection scanning device is used, since the unpenetrated hole is closed by the thin skin portion, minute foreign matter such as dust enters the inside of the housing and contaminates the optical components and the rotating polygon mirror, etc., thereby deteriorating the performance. There is no deterioration.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing an overall configuration of a first embodiment of an optical deflection scanning device according to the present invention.

FIGS. 2A and 2B are exploded perspective views showing a bonding portion between the housing and the optical component according to the first embodiment, and FIG.
(B) is a partial cross-sectional view along the line AA of (a).

FIG. 3 is an exploded perspective view showing a bonding portion between a housing and an optical component according to a second embodiment;
(B) is a partial cross-sectional view along line BB of (a).

FIG. 4 is an explanatory diagram showing the overall configuration of a conventional light deflection scanning device.

[Explanation of symbols]

 Reference Signs List 1 housing 2 rotating polygon mirror 3 optical component 3a first lens 3b second lens 4 mirror 5 optical sensor 6 motor 7 semiconductor laser unit 10, 20 non-through hole 11, 21 thin skin portion 12 bonding surface 13 positioning pin 14 escape Surface 15 UV curable adhesive

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G02B 26/10 G02B 7/02

Claims (2)

(57) [Claims] 1. A light source for generating a light beam, light deflection scanning means for deflecting and scanning the light beam generated by the light source, and an optical component for forming an image of the light beam deflected and scanned on a photosensitive member If, in the optical deflection scanning apparatus having the optical component is bonded by an adhesive to the housing,
Before Kikatamitai the plurality of bonding surface the adhesive is applied, said plurality
Shallow flank provided between the adhesive surfaces of
And, a portion said flank is formed, the optical deflection scanning apparatus, wherein a non-through hole which is closed is provided by the thin skin portion. Wherein the optical deflection scanning apparatus according to claim 1, wherein the positioning pins for positioning the optical component to each of the plurality of adhesive surface are projected.