JP2011053450A - Housing for optical scanner, optical scanner and image forming apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a housing for an optical scanner, improving work efficiency by restraining displacement of a light source part in the rotating direction due to worker's skill or worker's carelessness in screwing operation. <P>SOLUTION: This housing for an optical scanner is formed by a first inside wall 1d and a pair of outside walls 1m as follows. After a light source body 3 emitting a plurality of laser beams from the tip surface is rotated to adjust the distance between the laser beams in the uniaxial direction of a coordinate axis, a light source part is held on the first inside wall 1d through small screws 5. The pair of outside walls 1m are disposed at required spaces up to the outside of the first inside wall 1d, and provided with guide parts 1u guiding a tool W engaged with the small screws 5 to lock the small screws 5 on the first inside wall 1d. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a housing of an optical scanning device that emits laser light to a photosensitive member to form an electrostatic latent image on the photosensitive member, an optical scanning device that includes the housing, and an image forming apparatus that includes the optical scanning device.

2. Description of the Related Art An electrophotographic image forming apparatus such as a copying machine, a facsimile machine, or a printer includes an optical scanning device that emits laser light to a photoconductor in order to form an electrostatic latent image on the photoconductor.
The optical scanning device includes a light source unit that emits laser light, an optical unit that shapes the laser light emitted from the light source unit into a desired cross-sectional shape and divergence angle, and deflects the laser light emitted from the optical unit. It is generally configured to include an optical deflector, a scanning lens that moves the image plane of laser light from the optical deflector at a constant speed, and a housing for an optical scanning device that supports these components. is there.

  Among the above-described configurations, the light source unit that emits laser light uses a multi-channel laser diode configured to be capable of emitting a plurality of laser beams from the tip surface, and the plurality of laser beams increase the density of the output image and There is one that can speed up image output.

  The multi-channel laser diode capable of emitting a plurality of laser beams in this manner is attached to the side wall of the optical scanning device housing, and the plurality of lasers in one axis direction of the coordinate axis (X-axis direction or Y-axis direction; see FIG. 7). In order to set the distance between the lights (hereinafter referred to as “beam pitch”) to a desired distance, the mounting position in the rotation direction of the multichannel laser diode is adjusted during the mounting operation.

  Here, a conventional attachment procedure is exemplified. For example, a multi-channel laser diode is fixed to a holding member such as a laser holder or a base member, and the holding member is temporarily attached to the side wall of the optical scanning device housing. After the positioning is completed, the holding member is screwed onto the side wall of the optical scanner housing (see, for example, Patent Documents 1 and 2). In addition to screwing with screws, permanent attachment with fastening pins such as spring pins, taper pins, and parallel pins is also possible.

However, if the multi-channel laser diode is attached to the side wall of the optical scanning device housing by the conventional attachment procedure described above, when attaching the screw, using a tool, or when inserting a fastening pin, , The tool tilts due to the skill level of the worker and slight carelessness of the worker, and as a result, an unbalanced load is applied to the screw and the fastening pin, the screw and the fastening pin fall down, or the screw is screwed diagonally. There was a case.
Then, the holding member to which the multi-channel laser diode is fixed is slightly shifted in the rotation direction, and the multi-channel laser diode is attached to the side wall of the optical scanning device housing in a state of being out of the desired beam pitch. As a matter of course, in such a case, the work must be repeated from the adjustment of the beam pitch.

  The present invention has been made in view of such a situation, and an object thereof is to provide a housing for an optical scanning device, an optical scanning device, and an image forming apparatus that can solve the above problems.

In order to solve the above problems, the optical scanning device housing, the optical scanning device, and the image forming apparatus according to the present invention employ the following technical means.
In the invention according to claim 1, after the light source unit capable of emitting a plurality of laser beams from the distal end surface is rotated in the circumferential direction of the distal end surface, the distance between the laser beams in one axis direction of the coordinate axis is adjusted. An inner wall on which the light source unit is attached via a shaft-like fastening member, and a predetermined interval on the outer side of the inner wall, and the fastening member is engaged with the fastening member. A housing for an optical scanning device including an outer wall formed with a guide portion for guiding a tool to be locked to the inner wall.
According to a second aspect of the present invention, in the first aspect, the light source unit includes a light source body capable of emitting a plurality of laser beams from a front end surface, and a fastening member that holds the light source body, and the inner wall and the The outer wall is connected to the outer wall through a connecting wall, and the inner wall is penetrated so that the light source body can be inserted from the outer surface side with the front end face inward, and the light source body can be hooked. The formed insertion hole and the fastening member are formed so as to be engageable with each other, and the fastening member arranged to hold the light source body inserted into the insertion hole engages the fastening member. And a mounting hole to be mounted.
According to a third aspect of the present invention, in the second aspect, the guide portion is formed on a center line in the depth direction of the mounting hole.
According to a fourth aspect of the present invention, in any one of the first to third aspects, the guide portion is notched.
According to a fifth aspect of the present invention, in any one of the first to fourth aspects, the tool is configured to be capable of being driven or rotated in accordance with the fastening member, and an operating portion that is driven or rotated. And a fixed portion for holding the operating portion, wherein the guide portion is formed in a required size that allows the operating portion to be loosely inserted.
A sixth aspect of the present invention provides the tool according to any one of the first to fourth aspects, wherein the tool is configured to be capable of being driven or rotated in accordance with the fastening member, and an operating portion that is driven or rotated. And a fixing portion for holding the operating portion, wherein the guide portion is formed in a required size that allows the fixing portion to be loosely inserted.
A seventh aspect of the present invention provides the tool according to any one of the first to fourth aspects, wherein the tool is configured to be able to be driven or rotated according to the fastening member, and to be operated or rotated. And a fixed portion for holding the operating portion, wherein the guide portion is formed in a required size that allows the operating portion to slide.
According to an eighth aspect of the present invention, in any one of the first to fourth aspects, the tool is configured to be capable of being driven or rotated in accordance with the fastening member, and an operating portion that is driven or rotated. And a fixed portion for holding the operating portion, wherein the guide portion is formed in a required size with which the fixed portion can come into contact.
The invention according to a ninth aspect is characterized in that, in the seventh or eighth aspect, the guide portion is formed with a thickness such that the directionality of the tool is determined.
A tenth aspect of the present invention is characterized by an optical scanning device including the optical scanning device housing according to any one of the first to ninth aspects, the light source unit, and the fastening member.
The invention according to an eleventh aspect is characterized by an image forming apparatus including the optical scanning device according to the tenth aspect and a photosensitive member on which an electrostatic latent image is formed using the optical scanning device.

  According to the present invention, the outer wall is provided at a predetermined interval on the outer side of the inner wall that holds the light source unit capable of emitting a plurality of laser beams from the tip surface, and the light source unit is disposed on the outer wall on the inner side. A guide part that guides the tool to be attached to the wall is formed, and an external force is applied to the fastening member by the tool passing through the guide part to attach the light source part to the inner side wall. Misalignment in the rotation direction of the light source unit due to the skill level of the worker or carelessness of the worker can be suppressed, and workability can be improved.

It is a perspective view of the optical scanning device concerning this embodiment. It is a top view. It is a perspective view (outside) of the principal part. It is a longitudinal cross-sectional view which follows the XX line of FIG. It is a disassembled perspective view of the principal part. It is a perspective view (inner side) of the principal part. It is a front view of the light source body which showed beam pitch (distance between laser beams in the Y-axis direction) adjustment. It is a perspective view (outside) of the principal part at the time of beam pitch adjustment. It is the front view 1 of the 2nd notch part of another aspect. It is the front view 2 of the 2nd notch part of another aspect.

An embodiment of an optical scanning device provided with a housing of the optical scanning device according to the present invention will be described.
The optical scanning device according to the present embodiment is incorporated in an electrophotographic image forming apparatus (not shown) such as a copying machine, a facsimile, or a printer that outputs a full color image in four colors of black, yellow, magenta, and cyan. The optical scanning device housing, the light source unit, the optical unit 6, the optical deflector 7, and the scanning lens are illustrated.

  The optical scanning device housing includes a core housing 1 and a sub-housing 2.

  As shown in FIGS. 1 and 2, the core housing 1 includes a bottom wall and an inner wall erected from the peripheral edge of the bottom wall, and is seen in a plan view on one side of the space portion 1 a having a rectangular shape in plan view. A fan-shaped space 1b formed by three broken lines (formed by the inner side wall) is formed in a container shape. On both inner side walls in the longitudinal direction of the rectangular portion in plan view, rectangular openings 1c are provided for emitting laser light outward through a scanning lens described later. Further, the inner side walls forming the folding lines on both sides sandwiching the inner side wall forming the middle folding line of the fan-shaped portion in plan view (hereinafter referred to as “first inner side wall 1d and second inner side wall 1e”). As shown in FIGS. 4 and 5, there are provided an insertion hole 1f including a through hole portion 1g having a required diameter and a countersink hole portion 1h having a required diameter, and a screw hole 1k as a mounting hole. The arrangement positions of the insertion hole 1f and the screw hole 1k will be described later.

  Furthermore, as shown in FIGS. 3 to 5, the core housing 1 includes a first inner wall 1d and a second inner wall 1e, and a first inner wall 1d and a second inner wall 1e. A pair of rectangular outer walls 1m, 1n formed so as to be substantially the same region as the region are connected to each other by connecting walls 1p, 1q having horizontal intermediate portions in the height direction, and the first inner wall Around 1d and around the second inner wall 1e are each formed in an H shape in side view.

An insertion hole 1f is provided in the upper center portion and the lower center portion of each of the first inner wall 1d and the second inner wall 1e with the communication walls 1p and 1q interposed therebetween. Screw holes 1k as mounting holes are provided in the vicinity of both sides.
Each of the pair of outer walls 1m, 1n has a semicircular bottom centered on the center line in the depth direction of the insertion hole 1f. The upper edges of the outer walls 1m and 1n so that a substantially U-shaped first notch 1r that is notched and a semicircular bottom 1s centered on the center line in the depth direction of the screw hole 1k are formed. And a substantially U-shaped second cutout portion 1u as a guide portion cutout from each of the lower edges.

  The first notch 1r described above is formed in a size that allows a cylindrical adjusting jig 10 described later to be loosely inserted, and the second notch 1u twists a screw 5 as a fastening member described later. The bit W (operating part) of the electric screwdriver (tool) to be inserted is formed in such a size that it slightly slides. Further, the second notch 1u restricts the lateral movement of the bit W when the bit W is inserted into the second notch 1u, and the tip of the bit W is positioned at the head of the screw 5. It has become. Further, the outer walls 1m and 1n are formed with such thickness that the direction of the bit W is determined by the operator's feeling. It should be noted that a rib (not shown) may be provided around the periphery of the second notch 1u, and the bit W may be formed with a thickness that determines the directionality of the bit W only around the second notch 1u. Moreover, although this core housing 1 is comprised by the mold material, the structure by aluminum die-casting may be sufficient and it is not specifically limited.

As shown in FIG. 1, the sub-housing 2 is connected to the side plates 2 a and 2 b by the four connecting members 2 c so that the pair of strip-like side plates 2 a and 2 b are arranged to face each other at a predetermined interval. Thus, the frame is formed in a substantially rectangular shape in plan view, and the core housing 1 is supported at the center thereof. The four connecting members 2c are arranged on the both sides of the core housing 1 with a required interval of two, and the four connecting members 2c have openings 1c formed in the core housing 1. Optical members (not shown) that receive the laser light from the laser beam and emit it toward four photosensitive drums (not shown) that form toner images of black, yellow, magenta, and cyan are attached.
In addition, although the housing for optical scanning devices concerning this Embodiment is comprised by the separate member by the core housing 1 and the subhousing 2, you may comprise alone.

The light source unit includes a light source body 3 and a fastening member 4.
As shown in FIGS. 4 and 5, the light source body 3 is formed in a stepped columnar shape in which a flange 3a slightly thicker than the depth of the countersink hole 1h is provided at the base end, and is a base on the flange 3a side. The external connection terminal 3b (male) protrudes from the end face, and is composed of a multichannel laser diode configured so that two laser beams can be emitted from the end face. As shown in FIG. 6, the two light emitting portions 3 c from which the two laser beams are emitted are disposed to face each other with the circle center of the tip surface interposed therebetween. The light source body 3 configured as described above is inserted into the insertion hole 1f so that the flange 3a is seated in the counterbore hole 1h (FIG. 4).
In the present embodiment, the light source body 3 that emits two laser beams is illustrated, but the light source body 3 that emits three or more laser beams may be used.

  As shown in FIGS. 3 to 5, the fastening member 4 includes a first hole 4 a having a diameter smaller than the flange 3 a of the light source body 3 and a required diameter through which the plurality of external connection terminals 3 b can be inserted at once. A second hole 4b for loosely inserting the screw 5 at a position corresponding to the screw hole 1k across the first hole 4a is formed in a band plate shape. The fastening member 4 is elastically deformable with thin spring steel. Although the material of the fastening member 4 is not particularly limited, it is preferable that an insulating material or an insulating process is performed. However, when the material is formed of a conductive material, the first hole 4a is It is formed in a size that does not come into contact when the external connection terminal 3b of the light source body 3 is inserted.

  The fastening member 4 configured as described above is configured such that the external connection terminal 3b of the light source body 3 is inserted into the first hole 4a and the second hole 4b is overlapped with the screw hole 1k, and the first inner wall 1d and Each of the second inner walls 1e is disposed so as to cover the light source body 3 inserted into the counterbore hole 1h, and the screw 5 as a fastening member is screwed into the screw hole 1k. The light source body 3 is held down by pressing the proximal end surface on the flange 3a side slightly protruding from the pit hole 1h. The four light source bodies 3 are attached so that each laser beam is emitted toward an optical deflector 7 described later.

  The light source body 3 attached to the first inner wall 1d and the second inner wall 1e in this way is rotated in the circumferential direction as shown in FIG. The beam pitch in the sub-scanning direction (Y-axis direction) that is the axial direction is adjusted so as to be a desired distance, and then fixed (mainly attached). The series of operations will be described later.

  As shown in FIGS. 1 and 2, the optical unit 6 includes a coupling lens that shapes the divergence angle of incident laser light into a desired divergence angle, an aperture that shapes the cross-sectional shape of the laser light into a desired shape, and laser light. A laser in the vicinity of the light source body 3 in the fan-shaped space 1b of the core housing 1 is configured including a plurality of optical elements (not shown) such as a cylindrical lens that collects light on a deflecting surface of the optical deflector 7 described later. It is disposed on the optical path. Each laser beam emitted from each light source body 3 is emitted to an optical deflector 7 described later in a state of being shaped into a desired state by the optical unit 6.

  As shown in FIG. 1 and FIG. 2, the optical deflector 7 is adjacent to the up and down direction in a state where regular quadrangular prism-shaped members having a laser beam deflecting surface formed on the side surface are 45 degrees out of phase with each other. The core housing 1 is disposed in the center of the core housing 1 so as to be rotatable by a rotation mechanism (not shown). The optical deflector 7 configured as described above receives a laser beam emitted from the two light source bodies 3 on the first inner wall 1d side via the respective optical units 6 and receives a first scanning lens described later. 8, the laser beams emitted from the two light source bodies 3 on the second inner wall 1e side are received and emitted to the second scanning lens 9 to be described later so as to be scanned.

  As shown in FIGS. 1 and 2, the scanning lens includes a first scanning lens 8 and a second scanning lens which are arranged along a rectangular opening 1 c formed on both side walls of the core housing 1. Each scanning lens has an image height proportional to the incident angle of the laser beam, and the image plane of the laser beam deflected at a constant angular velocity by the optical deflector 7 is shown in the horizontal direction in FIG. It is designed to move at a constant speed. The laser light that has passed through the first scanning lens 8 and the second scanning lens 9 is emitted outward from the opening 1c described above.

  The optical scanning device according to the present embodiment configured as described above is a copying machine, a facsimile, a printer, or the like provided with four photosensitive drums (not shown) for each of four colors of black, yellow, magenta, and cyan. Built in an electrophotographic image forming apparatus (not shown), laser light is emitted from each light source 3 based on predetermined image data, and the laser light is scanned in the sub-scanning direction toward the photoconductor. Thus, an electrostatic latent image is formed on the photosensitive member.

Here, the adjustment jig 10 used when mounting and adjusting the light source body 3 will be described.
As shown in FIGS. 4 and 8, the adjustment jig 10 is formed in a cylindrical shape with a required diameter and a required length that can be loosely inserted into the first hole 4 a with a boss 10 a protruding from the center of the tip surface. In addition, a connection terminal portion 10b (female) that can be inserted into and removed from the external connection terminal 3b of the light source body 3 is formed around the boss 10a. The connection terminal portion 10b (female) is connected to an external device (not shown) via a cord extending from the rear end surface. The connection terminal portion 10b (female) is connected to the external connection terminal (male). ) Is inserted, power is supplied to the light source body 3.

Next, the attachment / adjustment work of the light source body 3 in the optical scanning device according to the present embodiment will be described.
First, the light source body 3 is inserted into the insertion hole 1f so that the flange 3a is seated in the counterbore hole 1h.
Next, the external connection terminal 3b of the light source body 3 is inserted into the first hole 4a, and the second hole 4b is superimposed on the screw hole 1k, so that the first inner wall 1d and the second inner wall 1e The fastening member 4 is held so as to cover the light source body 3 inserted into the counterbore hole 1h, and in that state, a screw 5 as a fastening member is screwed into the screw hole 1k by a required amount, and the light source body 3 is attached. Temporarily fix.
At this time, a bit W (operating part) of an electric screwdriver (tool) for screwing the screw 5 is inserted into the second notch part 1u (guide part), and the semicircular bottom part of the second notch part 1u The direction of the bit W is fixed so that the tip of the bit W is positioned at the head of the screw 5 so as to be placed lightly on 1 s, and then slowly screwed in (FIGS. 4 and 8).

When temporary fixing is completed in this way, the connection terminal portion 10b (female) is inserted into the external connection terminal 3b until the boss 10a contacts the base end surface of the light source body 3 through the first cutout portion 1r. The adjustment jig 10 is connected to the light source body 3 so that electric power is supplied to the light source body 3.
When the adjustment jig 10 is connected to the light source body 3, power is supplied to the light source body 3 to start emission of laser light from the light source body 3. Then, the beam pitch is measured using a measuring device such as a CCD camera or a position sensor. The angle adjustment of the light source body 3 is performed by measuring the position of the light source body 3 itself using a measuring device such as an autocollimator, a laser displacement meter, or a dial gauge, and performing fine adjustment with a desired means.

  Based on the measurement result by the measuring device, the light source body 3 is rotated and adjusted via the adjustment jig 10 so that the beam pitch in the sub-scanning direction becomes a desired distance. For example, as shown in FIG. 7, the light source body 3 is rotated by α degrees to change the beam pitch p1 to the beam pitch p2. At this time, the adjustment jig 10 is rotated so as to press against the light source body 3 so that the light source body 3 is not displaced when the screw 5 is tightened (main assembly).

When the desired beam pitch is reached, the screw 5 is screwed in and locked in a state where the adjusting jig 10 is pressed against the light source body 3. Also at this time, like the temporary fixing described above, the bit W (operating part) of the electric screwdriver (tool) for screwing the screw 5 is placed on the semicircular bottom 1s of the second notch 1u (guide part). The direction of the bit W is fixed so that the tip of the bit W is positioned at the head of the screw 5 and then screwed in slowly (FIGS. 4 and 8).
This series of operations is performed on a total of four light source bodies 3 attached to the first inner wall 1d and the second inner wall 1e, and the mounting and adjusting operations of the light source body 3 are completed.

  The above-described attachment / adjustment work of the light source body 3 is an example using the adjustment jig 10 that can be loosely inserted into the first hole 4a. However, the tip surface is flat without providing the boss 10a, and the first hole The adjustment jig 10 formed with a diameter larger than 4a may be used, and the attachment / adjustment work of the light source body 3 in that case is as follows. In addition, although not shown in figure concerning the attachment and adjustment work of this light source body 3, it attaches | subjects and demonstrates the same code | symbol mentioned above.

  First, the external connection terminal 3b is inserted into the connection terminal portion 10b (female) so that the fastening member 4 is sandwiched between the distal end surface of the adjustment jig 10 and the proximal end surface of the light source body 3. At this time, it performs in the state which match | combined the light emission part 3c direction with respect to the fastening member 4. FIG. Next, the light source body 3 is inserted into the insertion hole 1f so that the flange 3a is seated in the counterbore hole 1h in a state where the fastening member 4 is sandwiched between the distal end surface of the adjustment jig 10 and the proximal end surface of the light source body 3. . Also at this time, it is performed in a state where the direction of the light emitting portion 3c with respect to the first inner wall 1d (and the second inner wall 1e) is matched.

  When the light source body 3 is inserted into the insertion hole 1f, electric power is supplied to the light source body 3 and emission of laser light from the light source body 3 is started. Then, the beam pitch is measured using a measuring device such as a CCD camera or a position sensor. The angle adjustment of the light source body 3 is performed by measuring the position of the light source body 3 itself using a measuring device such as an autocollimator, a laser displacement meter, or a dial gauge, and performing fine adjustment with a desired means. Note that the moving distance during this fine adjustment is shorter than the gap between the screw 5 and the second hole 4b.

  When the desired beam pitch is reached, the screw 5 is screwed in, and the fastening member 4 is screwed onto the first inner wall 1d (and the second inner wall 1e) to fasten the light source body 3. At this time, the bit W (operating part) of the electric screwdriver (tool) for screwing the screw 5 is lightly placed on the semicircular bottom 1s of the second notch part 1u (guide part), and the tip of the bit W is The direction of the bit W is fixed so as to be positioned at the head of the screw 5, and then the screw 5 is slowly screwed in to complete the mounting and adjusting operation of the light source body 3. Thus, when the adjustment jig 10 formed with a diameter larger than that of the first hole 4a is used, the temporary fixing procedure using the screw 5 can be reduced.

  As described above, the optical scanning device according to the present embodiment is respectively provided outside the first inner wall 1d and the second inner wall 1e that hold the light source unit capable of emitting a plurality of laser beams from the front end surface. Electric drivers (tools) for providing outer walls 1m and 1n via connecting walls 1p and 1q, respectively, and attaching light source portions to the first inner wall 1d and the second inner wall 1e on the outer walls 1m and 1n. Forming a substantially U-shaped second notch 1u (guide portion) that restricts the movement of the bit W (operating portion) of the bit W (through the substantially U-shaped second notch 1u. Since the fastening member is screwed by the operating part) and the light source part is held on the inner wall, the tool is not tilted, and the rotation of the light source part in the direction of rotation of the light source part caused by the operator's skill level or carelessness of the operator Misalignment can be suppressed and workability can be improved.

  As mentioned above, although the optical scanning device concerning this Embodiment was demonstrated, embodiment mentioned above shows an example of suitable embodiment of this invention, and this invention is not limited to it, Various modifications can be made without departing from the scope of the invention.

  For example, in the present embodiment, the second notch portion 1u as the guide portion is formed with a size that allows the bit W (operating portion) of the electric screwdriver (tool) into which the screw 5 is screwed to slightly slide. The bit W is illustrated as being able to be lightly placed on the semicircular bottom 1s of the second notch 1u and screwed, but the bit W (working part) and the chuck for gripping the bit W are exemplified. A guide portion may be formed so that a fixed portion (a portion that does not rotate) of an electric screwdriver (tool) other than the above is abutted and supported. In addition, although the electric driver was illustrated as a tool, a normal driver may be used and it is not specifically limited.

  Further, the above-described tool and the guide part do not need to contact or slide. That is, it is only necessary that a gap is formed between the tool and the guide part so that the tool is not tilted so that an offset load is applied to the fastening member. It is only necessary that the fixed portion of the tool be formed in a required size (a size in which the above-described gap is formed) that can be loosely inserted.

  Furthermore, the guide portion of the present embodiment is exemplified by a groove shape that is cut out in a substantially U shape so as to form a semicircular bottom portion 1s. However, as shown in FIG. 9, the bottom portion is cut out in a V shape. The second notch 1w or the second notch 1x having a bottom notched horizontally as shown in FIG. 10 may be used, and is not particularly limited. It may be a guide part. In any case, as described above, the tool and the guide portion may be in contact (sliding contact) or non-contacting (non-sliding contact).

  Moreover, in this Embodiment, although the screw 5 was illustrated as a fastening member, it may replace with a screw and may be used as a pin (a spring pin, a taper pin, a parallel pin, etc.). In this case, it becomes a parallel or tapered hole instead of the screw hole 1k as the mounting hole. In such a case, the tool can be driven, such as a punch or an electric hammer.

  In the core housing 1 of the present embodiment, each of the first inner wall 1d and the second inner wall 1e and the pair of rectangular outer walls 1m, 1n are horizontal in the height direction intermediate portions. The connection walls 1p and 1q are connected to each other, and the first inner side wall 1d and the second inner side wall 1e are formed in an H shape when viewed from the side. 1q is not particularly limited. For example, the upper edges and the lower edges of the first inner wall 1d and the second inner wall 1e and the pair of rectangular outer walls 1m, 1n are arranged, for example. Or you may arrange | position so that side edges may be connected.

  Further, although the present embodiment exemplifies an optical scanning device used in a full-color image forming apparatus, it can also be applied to an optical scanning device used in a monochromatic image forming apparatus.

DESCRIPTION OF SYMBOLS 1 ... Core housing 1a ... Space part of rectangular shape 1b ... Fan-like space part 1c ... Opening part 1d ... 1st inner wall 1e ... 2nd inner wall 1f ... Insertion hole 1g ... Through-hole part 1h ... Countersink Hole 1k · Screw hole 1m · 1n · Outer wall 1p · 1q · Connection wall 1r · First cutout portion · 1s · Semicircular bottom portion · 1u · Second cutout portion · 1w · Second cutout portion · 1x · · · 2nd 2 of sub housing 2a 2b side plate 2c connecting member 3 light source body 3a flange 3b external connection terminal 3c light emitting part 4 fastening member 4a first hole 4b second hole 5 Screw 6 ... Optical unit 7 ... Optical deflector 8 ... First scanning lens 9 ... Second scanning lens 10 ... Adjustment jig 10a ... Boss 10b ... Connection terminal part W ... Bit

JP 2000-162536 A JP 2001-228418 A

Claims (11)

A light source capable of emitting a plurality of laser beams from the distal end surface is rotated in the circumferential direction of the distal end surface, and the distance between the laser beams in one axis direction of the coordinate axis is adjusted, and then the shaft-shaped fastening member is used. An inner wall on which the light source part is carried,
An outer wall formed on the outer side of the inner wall at a predetermined interval and formed with a guide portion for guiding a tool for engaging with the fastening member and locking the fastening member to the inner wall. A housing for an optical scanning device, comprising: The light source unit includes a light source body capable of emitting a plurality of laser beams from a front end surface, and a fastening member that holds the light source body,
The inner wall and the outer wall are connected via a connecting wall;
The inner wall is
The light source body is penetrated so as to be insertable from the outer surface side with the front end face inward, and an insertion hole formed so that the light source body can be hooked,
The fastening member is pierced so that it can be engaged, and the fastening member disposed so as to hold the light source body inserted into the insertion hole is attached by engaging the fastening member. The optical scanning device housing according to claim 1, wherein the optical scanning device housing is provided.   The optical scanning device housing according to claim 2, wherein the guide portion is formed on a center line in a depth direction of the mounting hole.   4. The optical scanning device housing according to claim 1, wherein the guide portion is notched. 5. The tool is configured to be able to be driven or rotated in accordance with the fastening member, and includes an operating part that is driven or rotated, and a fixing part that holds the operating part,
5. The optical scanning device housing according to claim 1, wherein the guide portion is formed to have a required size in which the operating portion can be loosely inserted. The tool is configured to be able to be driven or rotated in accordance with the fastening member, and includes an operating part that is driven or rotated, and a fixing part that holds the operating part,
5. The optical scanning device housing according to claim 1, wherein the guide portion is formed in a required size in which the fixing portion can be loosely inserted. The tool is configured to be able to be driven or rotated in accordance with the fastening member, and includes an operating part that is driven or rotated, and a fixing part that holds the operating part,
5. The optical scanning device housing according to claim 1, wherein the guide portion is formed to have a required size with which the operating portion can slide. The tool is configured to be able to be driven or rotated in accordance with the fastening member, and includes an operating part that is driven or rotated, and a fixing part that holds the operating part,
5. The optical scanning device housing according to claim 1, wherein the guide portion is formed to have a required size with which the fixed portion can come into contact. 6.   9. The optical scanning device housing according to claim 7, wherein the guide portion is formed to a thickness that determines a directionality of the tool.   An optical scanning device comprising: the optical scanning device housing according to any one of claims 1 to 9, the light source unit, and the fastening member.   An image forming apparatus comprising: the optical scanning device according to claim 10; and a photosensitive member on which an electrostatic latent image is formed using the optical scanning device.

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