JP2747052B2 - Optical system equipment - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical system device mainly used for a copying machine or the like, and more particularly, to a first movement which scans while maintaining a predetermined positional relationship with each other. The present invention relates to a wire driving optical system having a frame and a second moving frame.

2. Description of the Related Art A conventional copying machine having a wire driving optical system that scans a document placed on a contact glass with a moving mirror is widely known. As shown in FIG. 6, a light source (7a) that scans an original (not shown) on a contact glass (1)
And a first moving frame (4) provided with a mirror (7b) and a mirror (8) for adjusting an optical path length for guiding light from the mirror (7b) to an imaging lens (not shown). Two moving frames (5) are provided in the copier case (10). In this case, in the scanning area, the scanning start position is the home position (2), and the scanning end position is the return position (3).
And As shown in FIG. 7, the first moving frame (4) is fixed to the wire (9) at both ends, and the second moving frame (5) is connected to the movable pulley (16) provided at both ends by wires ( 9)
Is wound. Therefore, the first and second moving frames (4) and (5) move in response to the movement of the wire (9), and when the wire (9) stops, the moving frames (4) and (5) also stop. In other words, if one of the moving frames (4) and (5) stops, the other stops. When the wire (9) is wound around the drive pulley (15) by the scan motor (6), the first moving frame (4) and the second moving frame (5) are moved to the home position at a speed ratio of 2: 1. The scanning movement is performed from the side (2) to the return position (3) (FIGS. 6 and 7). That is, the first moving frame (4) and the second moving frame (5) scan while maintaining a positional relationship where the optical path length from the mirror (7b) to the imaging lens is always constant.

However, when the wire (9) connecting the moving frames (4) and (5) is elongated or when the wire is replaced,
In order to keep the optical path length constant, it is necessary to perform reference alignment of each of the moving frames (4) and (5). This reference alignment requires a lot of time and fatigue.

Therefore, various types of wire driving optical system devices for easily performing reference alignment have been proposed.

For example, Japanese Patent Application Laid-Open No. 62-99741 discloses that the inner surface on the home position side of a copying machine case is a fixed fourth reference surface,
The third reference surface of the second moving frame is brought into contact with the fourth reference surface,
An apparatus has been proposed in which the first reference surface of the first moving frame is brought into contact with the second reference surface of the third moving frame to perform reference positioning of each moving frame.

Japanese Patent Application Laid-Open No. 61-77834 discloses that a contact member is provided on the return position side of the copying machine main body to be in contact with the first moving frame and the second moving frame, respectively. There has been proposed an apparatus for performing the reference alignment by making contact with the reference position.

Problems to be Solved by the Invention In the above-described optical system device, reference positioning is performed by bringing each moving frame into contact with a reference surface fixed to the device main body. The reference plane is a reference position in the design of the apparatus, and is actually deviated from an original reference position, that is, a position for forming a good image, due to a mechanical error or a variation in assembly accuracy for each apparatus.

Therefore, in order to adjust each moving frame to the original reference position, it is necessary to actually form an image and perform various adjustments such as focus adjustment. However, in the conventional device, since the original reference position determined by performing various adjustments at the time of the initial wire attachment does not remain at the time of wire replacement, it is necessary to perform various adjustments again at the time of wire replacement to determine the original reference position. There's a problem.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems and to provide an optical system device capable of easily performing reference alignment at the time of wire replacement or the like.

Means for Solving the Problems In order to achieve the above object, according to the present invention, in the optical system apparatus including a first moving frame and a second moving frame that scan and move in a scanning area while maintaining a predetermined positional relationship, Movable for defining the positional relationship of the first moving frame with respect to the second moving frame by contacting the first moving frame at a position outside the scanning area beyond the end of the scanning area on the one moving frame side. A first slide member provided at a position outside the scanning area beyond an end of the scanning area on the side of the second moving frame, abutting on the second moving frame and the second movement with respect to the first moving frame; A movable second slide member for defining the positional relationship of the frame is provided.

According to such a configuration, once the positional relationship between the first moving frame and the second moving frame is once determined, the first and second slide members are set and fixed in this positional relationship, so that when the wire is exchanged or the like. In this case, the reference position can be adjusted simply by bringing the first slide member and the second slide member into contact with the first moving frame and the second moving frame, respectively.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings. 6 and 7 are designated by the same reference numerals, and description thereof will be omitted.

FIGS. 1 and 2 show that in this embodiment, the second moving frame (5) includes the second slide member (32) and the second contact member (2).
2) and the first moving frame (4) is in the first position.
The state where it is in contact with the slide member (31) and the first contact member (21) is shown. A second slide member (32) and a second contact member (22) are provided at a position outside the scanning area beyond the home position (2), and outside the scanning area beyond the return position (3). Except that a first slide member (31) and a first contact member (21) are provided at the positions, the configuration is the same as that of the conventional example shown in FIGS. 6 and 7.

As shown in FIGS. 1 and 2, the copier case (10)
The first contact member (21) and the second contact member (2
2) is provided integrally with the copier case (10).
Further, the first contact member (21) and the second contact member (2) are passed through a hole (47) penetrating the side surface of the copier case (10).
The first slide member (3
1) and a second slide member (32) are provided.

3 and 4 are a plan view and a front view of the slide members (31) and (32), respectively. FIG. 5 shows that the slide members (31) and (32) are mounted on the copier case (10). It is a front view showing the state where it was attached. As shown in the figure, each of the slide members (31) and (32) is composed of a slide member body (42) and an abutting portion (41).
A contact portion (41) is provided in a portion of the upper edge of the upper portion in a V shape. As shown in FIG. 4, the slide member main body (42) is provided with a hole (45) and a projection (43). As shown in FIG. 5, the contact portion (41) is inserted into the hole (47) of the copier case (10), and at the same time, the hole (4) of the copier case (10) is inserted.
The protrusion (43) is fitted to 6), and the slide member body (42) is moved in the direction of the arrow (A) (FIGS. 1, 2 and 5) to fit the hole (45). The slide members (31) and (32) can be fixed at predetermined positions of the copier case (10) by the attached screws (48). In addition, a scribe line (44) (fourth line) provided on the slide member body (42) is provided.
5, the position of the contact portion (41) with respect to the copier case (10) can be easily set.

When the second slide member (32) is fixed at a position where the right edge of the hole (47) and the center scribe line (44) meet as shown in FIG. 5) is brought into contact with the second contact member (22) and the second slide member (32) as shown in FIG. 1, so that the second moving frame (22) is perpendicular to the wire (9). It is set to be located.
The same applies to the first slide member (31). As shown in FIG. 5, the right edge of the hole (47) and a scribe line (4
4), the first moving frame (21) is set to be perpendicular to the wire (9) as shown in FIG.

Hereinafter, a method of performing the reference position adjustment of each of the moving frames (4) and (5) using the respective slide members (31) and (32) and the respective contact members (21) and (22) will be described.

First, the first reference alignment at the time of assembling the optical system device is performed according to the following first to eighth steps.

In the first step, a wire (9) is wound around a movable pulley (16) as shown in FIG. Then, the second slide member (32)
Align the center scribe line (44) provided on the right edge of the hole (47) as shown in FIG. Then, as shown in FIG. 1, the second moving frame (5) is brought into contact with the second contact member (22) and the second slide member (32).

In the second step, the center scribe line (44) provided with the first slide member (31) is inserted into the hole (47) as shown in FIG.
To the right edge of Without fixing the first moving frame (4) to the wire (9), the first moving frame (4) is attached to the first contact member (21) and the first slide member (31) as shown in FIG.
Abut. At this time, the second moving frame (5) is
The state shown in the figure is maintained.

In the third step, the second moving frame (5) is driven by the scan motor (6) by a design step amount. This step amount is determined by the first moving frame (4) required in the design of the optical system device.
Is determined from the relative position of the second moving frame (5) with respect to. In this step, the focus is substantially adjusted.

In a fourth step, the first moving frame (4) is fixed to the wire (9).

In the fifth step, a fine adjustment of the first and second moving frames (4) and (5) such as focus adjustment and angle adjustment is performed by drawing a picture, that is, forming an image.

In the sixth step, the second moving frame (5) is brought into contact with the second contact portion (22). At this time, the second slide member (32) also
The screw (48) (fifth terminal) is brought into contact with the moving frame (5).
(Fig.) To move the second slide member (32)
The second slide member (32) is fixed to the copier case (10) again with the screw (48).

In the seventh step, the first moving frame (4) is moved to the first contact member (21).
Contact. At this time, the screw (48) (FIG. 5) is loosened and the first slide member (31) is moved so that the first slide member (31) also contacts the first moving frame (4).
The first slide member (31) is fixed to the copier case (10) again with the screw (48).

In the eighth step, the second moving frame (5) is moved to the second contact member (22).
And a state in which it is in contact with the second slide member (32) (first
FIG. 2 shows that the first moving frame 4 is in contact with the first contact member 21 and the first slide member 31 (FIG. 2).
The step amount of the scan motor (6) up to is obtained.

Even if the adjustment is performed in this manner, the first moving frame (4), the second moving frame (5), and the second moving frame (5) are not used when the wire (9) is elongated as the number of uses increases or when the wire (9) is replaced. The positional relationship goes wrong. Therefore, for example, when performing wire exchange, it is only necessary to perform the first to fourth steps. In addition, the positioning of the second slide member in the first step and the position of the first slide member in the second step are performed. No alignment work is required. This is because these slide members maintain their original state.

Effect of the Invention As described above, according to the present invention, the movable first
Since a predetermined positional relationship between the first moving frame and the second moving frame is defined by the sliding member and the second sliding member, once the sliding member is adjusted as the original reference position, for example, when the wire is replaced, The second and subsequent reference positions can be easily adjusted. As a result, there is an effect that workability such as wire replacement work is improved.

[Brief description of the drawings]

1 and 2 are schematic plan views for explaining an embodiment of the present invention. FIG. 3 is a plan view showing an example of a slide member used in the present invention, FIG.
FIG. 5 is a front view showing the mounted state. FIG. 6 is a schematic sectional view for explaining the operation of the conventional example, and FIG.
The figure is a schematic plan view. (4) First moving frame, (5) Second moving frame, (21) First contact member, (22) Second contact member, (31) First slide Member, (32) ... second slide member.

Claims (1)

(57) [Claims] 1. An optical system apparatus having a first moving frame and a second moving frame for scanning and moving a scanning area while maintaining a predetermined positional relationship with each other, wherein an edge of the scanning area on the first moving frame side is exceeded. A movable first slide member that abuts on the first moving frame at a position outside the scanning area to define a positional relationship of the first moving frame with respect to the second moving frame; A second movable frame that abuts on the second moving frame at a position outside the scanning region beyond the edge of the scanning region on the frame side to define a positional relationship of the second moving frame with respect to the first moving frame; An optical system device provided with a slide member.