JPH11190824A - Deflection scanning device and picture forming device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To conduct a visual inspection while a cover memeber is installed on an optical box, to check an electrical connection and to improve the workability by providing the transparent portion, through which the connecting section of the terminal used to conduct the connections to a picture forming device main body is made visible on the box frame. SOLUTION: A cover member 12 is mounted on an optical box 1 by screws and the box 1 is fixed to an optical table 21 of an LBP main body. A terminal 11A of an electrical cable 11, which is connected to the main substrate of the main body, is passed through a notched section 1b, which is provided on the side direction of the box 1, and is electrically connected to a receiving port 10A which is provided on the electrical substrate of the deflection scanning device. Since the top section of the port 10A of the electrical substrate is transparent having a transparent color 'a' of the member 12, the terminal 11A of the cable 11 is surely inserted into the port 11A and visually confirmed. Thus, the sheet member, which protects the adverse effect caused by dust, is eliminated, no pasting is required and the workability is improved. Moreover, a warning label member for laser beams is eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art Heretofore, this kind of deflection scanning apparatus is configured as shown in a plan view of FIG. An optical box 1 made of synthetic resin includes a semiconductor laser output device 2 for emitting laser light, a cylindrical lens 3 for condensing the laser light linearly, and a polygon mirror 4 for deflecting and scanning the emitted laser light. A drive motor 5 for rotating the polygon mirror 4 at a high speed, a scanning lens 6 for forming an image of the deflected laser light, a photosensitive drum 7 for forming an image of the laser light, a synchronous lens 8 and a synchronous sensor 9. Is provided.

FIG. 5B is a sectional view taken along the line AA of FIG. 5A.

In FIG. 5B, a semiconductor laser output device 2, a synchronous sensor 9, and a drive motor 5 are connected to an electric board 10
, And are connected by a bundle of electric wires 11 from the main body main board outside the apparatus.

A plurality of screw portions 1a for fixing the lid member 12 to the optical box 1 (shown in FIGS. 5A and 6).
And a notch 1b for passing the electric bundle 11 therethrough. Reference numeral 21 denotes a mounting base for an LBP (laser beam printer) main body, on which a deflection scanning device is mounted, and thereafter, the terminal 11A of the electric bundle 11 is electrically connected to the electric substrate 1 in the direction of the arrow.
0 shows a state in which it is attached to the socket 10A.

FIG. 6 is a plan view of the deflection scanning device shown in FIG. 5A with a lid member covered thereon. The inside of the optical box 1 is sealed by a lid member 12 made of a sheet metal material. The cover member 12 is provided with a screw through hole 12a corresponding to a position above a plurality of screw portions 1a provided in the optical box 1.

Reference numeral 12b denotes a rectangular cutout window for visually checking the connection of the above-mentioned electric bundles, and after completion, is pasted on a sheet member 14 larger than the cutout window 12b.

Reference numeral 13 denotes a well-known laser caution label sheet member, which is attached by bonding.

In the above configuration, the laser light emitted from the semiconductor laser output device 2 provided in the optical box 1 is condensed on a line on the surface of the polygon mirror 4 by the cylindrical lens 3, and the polygon mirror 4 is driven by a drive motor. Since the laser beam is rotated at a high speed by 5, the laser beam is deflected and forms an image on the photosensitive drum 7 via the scanning lens 6.

A part of the laser light deflected by the polygon mirror 4 is input to a synchronous sensor 9 via a synchronous lens 8 and becomes a write start signal.

[0011]

However, in the above prior art, the deflection scanning device is fixed to the optical table 21 of the main body,
The terminal 11A of the electric bundle connected from the main body main board for connection with the LBP main body is connected to the receiving port 10A of the electric board 10.
Notch 1 provided in the lateral direction of the optical box 1
In order to insert the terminal 11A manually by hand, it was necessary to confirm that the terminal 11A was not completely inserted.

For this purpose, a notch window 12b for confirmation as shown in FIG. 6 is required, and after completion of the confirmation, it is necessary to attach the sheet member 14 for dust prevention.

As another method, the sheet member 14 may be made of a transparent sheet and pasted to the lid member 12 in advance.

If the notch window 12b is not provided, the lid member 12 once attached is removed from the optical box 1, and the terminal 11A of the electric bundle is securely connected to the socket 10A of the electric board 10.
After visually confirming that the cover member has been pushed into the optical box 1, the lid member 12 must be attached to the optical box 1 again.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and its object is to eliminate the dust-proof sheet member, or to remove and reattach the cover member again. It is another object of the present invention to provide a deflection scanning device which improves the operability in which the electrical connection can be checked visually as it is even when the lid member is attached to the optical box.

[0016]

In order to achieve the above object, according to the present invention, a transparent portion is provided in an optical box frame so that a connection portion of a terminal connected to an image forming apparatus main body can be viewed. It is characterized by.

Therefore, when the transparent portion is a cutout window, it is necessary to provide a dust-proof sheet. However, this is not necessary, the workability can be improved, and no cutout window is provided. Therefore, the strength of the frame is also improved. further,
If the dust-proof sheet is incompletely attached to the notch window, dust may enter the optical box and adhere to the inside, causing image deterioration, but preventing such dust from entering be able to.

Preferably, the transparent portion is provided on a lid member of the optical box.

The lid member is formed of a transparent resin,
It is preferable that the lid member is directly printed on the surface of the lid member in two colors of yellow and black except for the transparent portion by silk screen printing.

The lid member is formed of a transparent resin constituting the transparent portion and a resin of one of the two colors, and the other of the two colors is directly silk-screen printed on the surface of the lid member. Preferably printed in color.

An image forming apparatus according to the present invention includes the above-described deflection scanning device and an image forming section for forming an image on a recording material.

Therefore, it is possible to prevent dust from entering the optical box,
The image quality of the image formed on the recording material is improved by preventing image deterioration.

[0023]

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the dimensions of the components described in this embodiment,
The material, shape, relative arrangement, and the like are not intended to limit the scope of the present invention only to them unless otherwise specified.

(First Embodiment) First, an LBP (laser beam printer) as an image forming apparatus using a deflection scanning device having features in the embodiment of the present invention will be schematically described.

The image forming apparatus develops a latent image formed by forming a laser beam from a deflection scanning device on an image carrier in an image forming section with toner, and forms the toner image on a recording material to be conveyed. Is transferred, the recording material on which the unfixed image is formed is conveyed to a fixing device, and heated and pressed to fix the toner image.

Next, the deflection scanning device is configured as shown in the plan view of FIG. An optical box 1 made of synthetic resin includes a semiconductor laser output device 2 for emitting laser light, a cylindrical lens 3 for condensing the laser light linearly,
A polygon mirror 4 for deflecting and scanning the emitted laser light, a drive motor 5 for rotating the polygon mirror 4 at high speed, a scanning lens 6 for forming an image of the deflected laser light, and an image of the laser light A photosensitive drum 7, a synchronous lens 8, and a synchronous sensor 9 are provided as image carriers to be carried out.

FIG. 1B is a sectional view taken along the line AA of FIG. 1A.

In FIG. 1B, the semiconductor laser output device 2, the synchronous sensor 9, and the drive motor 5
, And are connected by a bundle of electric wires 11 from the main body main board outside the apparatus.

The optical box 1 is provided with a plurality of screw portions 1a for fixing the lid member 12 and a cutout portion 1b for passing the electric bundle 11 therethrough. Reference numeral 21 denotes a mounting base for the LBP main body, to which a deflection scanning device is attached,
The terminal 11A of the electric bundle 11 of the main body is attached to the receptacle 10A of the electric board 10 from the outside in the direction of the arrow.

FIG. 2 shows a lid member 12 according to the first embodiment of the present invention. FIG. 2 (a) is a top view of the lid member, and FIG. 2 (b) is a deflection scanning device to which the lid member is attached. FIG. 3 is a plan view showing a case in which is attached to an optical table of a main body and an electric connection is made.

In FIG. 2A, reference numeral 12 denotes a lid member, which is formed of a resin material having a transparent color a, and b and c are silk-printed in color.

As is well known, a laser caution label is used by a user or a service person so that the laser beam emitted from the image forming apparatus is not directly seen by the user, or is directly irradiated on the skin for a long time. In order to prevent accidents such as dermatitis, caution is described, and two colors, yellow and black, are conspicuous.

In the drawing, b is printed in black at a character portion or a symbol, and c is! It is printed in yellow on the part and the back of the whole.

Reference numeral 12a is a through hole for a screw for fixing the lid member.

In FIG. 2B, the lid member 12 shown in FIG. 2A is screwed to the optical box 1 and then fixed to the optical base 21 of the LBP main body.

Thereafter, the terminal 11A of the electric bundle 11 connected to the main board of the LBP main body is connected to the notch 1b provided in the lateral direction of the optical box 1 at the receiving port 12 provided on the electric board 10 of the deflection scanning device. Electrical connection.

In the above configuration, the upper portion of the receptacle 10A of the electric board 10 is a transparent portion of the transparent color a of the lid member 12, so that the terminal 11 of the electric bundle 11 is visually observed.
It can be confirmed whether or not “a” is securely inserted into the receiving port 10A.

As a result of the above, the dust-preventing sheet member shown in the prior art can be eliminated, and the work for attaching is unnecessary and the workability is improved. Also, the laser caution label member can be eliminated. Therefore, the cost is reduced by eliminating the sheets and labels. In addition, since there is no adhesion of sheets and labels,
It becomes easy to recycle the lid member.

In some cases, dust may enter the optical box and adhere to the inside of the optical box from the gap generated when the sheet member for dust prevention is incompletely attached, causing image deterioration. Can be prevented. Particularly, in the case of an image forming apparatus using the deflection scanning device according to the present embodiment, the quality of an image recorded on the recording material can be improved.

Further, when a notch window for visually confirming terminal insertion is provided as in the conventional case, the position of the notch window is near the end of the lid member, or the notch window is large. For this reason, the strength of the lid member may be deteriorated, but the lid member according to the present embodiment can maintain the strength of the lid member and can improve the durability. This also increases the degree of freedom in design.

The printing method may be various methods such as silk printing and hot stamping.

(Second Embodiment) FIG. 3 is a plan view showing a lid member 12 according to a second embodiment.

In the second embodiment, a case of two-color molding using two types of resin materials a and c will be described.

The rest of the configuration is the same as that of the first embodiment, and a description thereof will be omitted.

Reference numeral 12a denotes a through hole for stopping a screw, c is a yellow resin material, and a is a transparent resin material.

Although the cost is increased because the molding material is of two colors and two types (a, c), the silk printing is simple because only part b (black) is used.

Also in this case, it can be visually confirmed whether or not the terminal of the electric bundle is securely inserted into the receptacle.

As a result, the sheet member for dust prevention shown in the prior art can be eliminated, and the work for attaching is unnecessary, and the workability is improved. Also, the laser caution label member can be eliminated, and the same effects as in the first embodiment can be obtained.

(Third Embodiment) FIG. 4 is a plan view showing a lid member 12 according to a third embodiment.

Since the details are the same as those of the first and second embodiments, the whole description is omitted.

The lid member is formed of a transparent resin, and the lid member 1
2 shows a case in which the entire back surface b excluding a part a of the silk screen is black-printed in black, and the back color c of the conventional laser caution label is yellow and the characters b are black in color. . The part a is a transparent part where the insertion of the connector can be confirmed.

Compared with the first and second embodiments, the entire lid member is basically black, so that the color is calm.

The same configuration can be realized by another method.
That is, the lid member is molded by two-color molding using the transparent resin a and the black resin b. The transparent portion a is limited to a portion where the insertion of the connector can be confirmed, and the other portions are black. A laser caution label is formed on this lid member by printing yellow c.

At this time, if the white part and the character part are left out, a black character can be obtained automatically only by yellow printing. There is an advantage that only one printing color is required and a calm color feeling can be obtained.

As a result, the dust-preventing sheet member shown in the prior art can be eliminated, and the work for attaching is not required and the workability is improved. Also, the laser caution label member can be eliminated, and the same effects as in the first embodiment can be obtained.

[0056]

According to the deflection scanning device of the present invention, a transparent portion is provided on the optical box frame so that the connection portion of the terminal connected to the image forming apparatus main body can be viewed. Requires a dustproof sheet, but this is no longer necessary, and workability can be improved. In addition, the strength of the frame body is improved because the notch is not provided.

Further, if the dust-proof sheet is incompletely attached, dust may enter the optical box and adhere to the inside, causing image deterioration. Can be prevented.

Since the image forming apparatus of the present invention includes the above-described deflection scanning device and an image forming section for forming an image on a recording material, dust can be prevented from entering the optical box. In addition, image quality of an image formed on a recording material is improved by preventing image deterioration.

[Brief description of the drawings]

FIG. 1A is a plan view showing a deflection scanning device according to a first embodiment, and FIG. 1B is a diagram showing the deflection scanning device according to the first embodiment in FIG. It is sectional drawing cut | disconnected and shown along AA line.

FIG. 2A is a plan view illustrating a lid member according to the first embodiment, and FIG. 2B is a diagram illustrating a deflection scanning device according to the first embodiment in which the lid member is covered; It is a top view showing a state.

FIG. 3 is a plan view showing a lid member according to a second embodiment.

FIG. 4 is a plan view showing a lid member according to a third embodiment.

5 (a) is a plan view showing a conventional deflection scanning device, and FIG. 5 (b) is a sectional view of the conventional deflection scanning device taken along line AA of FIG. 5 (a). FIG.

FIG. 6 is a plan view showing a state in which a cover member is put on a conventional deflection scanning device.

[Explanation of symbols]

 12, 12 'Lid member 12a Through hole a Transparent color b Black c Yellow

Claims (5)

[Claims] 1. A deflection scanning device, wherein a transparent portion is provided on an optical box frame so that a connection portion of a terminal connected to an image forming apparatus main body is visible. 2. The deflection scanning device according to claim 1, wherein the transparent portion is provided on a lid member of the optical box. 3. The lid member is formed of a transparent resin, and is printed in two colors of yellow and black by silk-screen printing directly on the surface of the lid member except for the transparent portion. 3. The deflection scanning device according to 2. 4. The lid member is formed of a transparent resin constituting the transparent portion and a resin of one of two colors, yellow and black, and is formed by silk screen printing directly on the surface of the lid member. 3. The deflection scanning device according to claim 2, wherein the deflection scanning device is printed in the other one of the colors. 5. A deflection scanning device according to claim 1, 2, 3 or 4, and an image forming section for forming an image on a recording material.
An image forming apparatus comprising: