JPH0511146U - Lens avoidance device - Google Patents

Abstract

(57) [Summary] [Purpose] Temporarily avoid various lenses in use at the avoidance place in the photo printing apparatus without moving them to the outside. Moreover, even when the lens is moved to the outside, it is easy to remove the lens and there is no risk of dropping it. [Constitution] The lens avoidance device B connects a lens housing member 9 to a lens deck 8 via a connecting / rotating member 10. The lens housing member 9 has a lens temporary placement member 9a for supporting the zoom lens 6, and a lens receiving port 9d is formed on its free end side. The lens housing member 9 is rotated about the connecting / rotating member 10, and the lens receiving port 9d and the opening 8 of the lens deck 8 are rotated.
and abut on d. The zoom lens 6 is moved to be housed in the lens housing member 9 and is rotated again to return to the initial position to avoid the zoom lens 6.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a lens avoidance device for temporarily avoiding a lens mounted on an exposure part of a photo printing apparatus, and more specifically, a lens accommodating member having a lens receiving opening is rotated with respect to a lens supporting member having an opening. The present invention relates to a lens avoidance device that makes contact with each other and enables movement of the lens.

[0002]

[Prior Art]

 In a photo printing apparatus that conveys unexposed light-sensitive material and prints a required negative, a zoom lens or a single-focus lens that magnifies the light of the light source is attached to the exposure position of the exposure section, but each type of negative size and When changing the zoom lens etc. according to the print size or performing maintenance, it is necessary to move the zoom lens etc. from the exposure position. The lens avoidance device is a device for temporarily avoiding the lens from the exposure position to another place inside the photo printing apparatus.

[0003] Conventional lens avoidance devices include one having a avoidance function in the zoom lens itself and one having a lens deck for mounting the zoom lens at the exposure position and providing an avoidance place in this lens deck. It was

The former has a structure in which an arm 107 is provided on the zoom lens 106 as shown in FIG. 4, and the arm 107 is rotated around a fixed position 108 of the arm 107 to an avoidance position shown by a chain line. In the latter case, as shown in FIG. 5, the depth of the lens deck 108 supporting the zoom lens 206 is made sufficiently long so that the front surface of the lens deck 108 is the exposure position and the back is the avoidance position.

[0005]

[Problems to be solved by the device]

 However, in the zoom lens itself having the avoidance function, the arm 107 is firmly fixed because the zoom lens 106, which is a heavy object, is supported by the arm 107. Therefore, it is not easy to take the zoom lens 106 out of the photo printing apparatus, and there is a fear that the zoom lens 106 may be dropped and damaged when the arm 107 is released from being fixed.

Further, since the only lens having the avoidance function is the zoom lens 106, it is necessary to always move to the outside even when temporarily avoiding another lens that has been replaced.

Further, in the conventional lens avoidance device in which the avoidance place of the zoom lens 206 is provided on the lens deck 108, since the avoidance position is provided at the back of the exposure position, various devices disposed around the exposure position, for example, A photometric sensor, a scanner, a cooling fan, etc. cannot be placed at the back of the exposure position, which limits the degree of freedom in design.

This invention solves the above-mentioned drawbacks of the conventional lens avoidance device, temporarily avoids various lenses in use to the avoidance place in the photo printing device without moving them to the outside, and moves them to the outside. It is an object of the present invention to provide a lens avoidance device in which the lens can be easily removed even when the lens is used and there is no risk of dropping the lens.

Further, a lens storage member is provided in addition to the lens support member, and the lens storage member is rotated to temporarily avoid the lens, so that the avoidance place is diversified and the lens is disposed around the exposure position. It is an object of the present invention to provide a lens avoiding device which can increase the degree of freedom of various devices and downsize a photo printing device.

[0010]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the lens avoidance device of the present invention is an opening for supporting the exterior of the lens mounted on the exposure part of the photoprinting device and moving in the direction orthogonal to the optical axis of the lens to attach and detach the lens. A lens supporting member having a portion, a lens housing member having a lens receiving port that supports the exterior and moves in a direction orthogonal to the optical axis to house or carry out the lens, and the lens housing member to support the lens. It has a connecting and rotating member that is connected to the member and rotates so that the lens receiving port and the opening face and abut against each other so as to move the lens.

[0011]

[Action]

 In the lens avoidance device of this invention, the lens is inserted from the opening of the lens support member, and the lens exterior is supported by the lens support member and mounted on the exposure unit. When avoiding this lens from the light-exposed part, the lens housing member connected to the lens support member is rotated around the connecting and rotating member so that the lens receiving port of the lens housing member and the opening of the lens supporting member are connected to each other. Face and abut. Next, the lens is moved in the direction orthogonal to the optical axis, passes through the opening and the lens receiving port, and is housed in the lens housing member. After that, the lens storage member is rotated and returned to the original position, and the avoidance of the lens is completed.

When the lens that has been avoided is reattached to the exposure unit, the reverse operation to the above is performed, and when the lens is taken out of the photographic printing apparatus, it is left as it is from the opening or the lens receiving port. Move and take out.

[0013]

【Example】

 Embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a schematic configuration diagram of a photographic printing apparatus, FIG. 2 is a schematic plan view of a lens avoiding apparatus, and FIG. 3 is an explanatory diagram for explaining the operation of the lens avoiding apparatus. In the photoprinting apparatus A, the unexposed photosensitive material F is conveyed to the exposure center position 2a of the exposure section 2 by using the belt conveying means 1. After that, the light of the light source 4 passing through the mirror tunnel 3 is transmitted through the negative 5, and then the transmitted light is magnified by the zoom lens 6 and irradiated on the photosensitive material F through the shutter 7 to be exposed. In the zoom lens 6, an overhanging portion 6a protruding from the side of the lens barrel of the exterior is mounted and fixed on the lens deck 8. A lens avoiding device B is connected to the outside of the lens deck 8.

The lens deck 8 connects the pair of lens support members 8a that support both ends of the overhanging portion 6a of the zoom lens 6 and the inner part of the lens support member 8a to set the zoom lens 6 to an appropriate exposure position. It has a stopper member 8b. The stopper member 8b is fixed to the side plate 2b of the exposure unit 2 and fixes the end portion of the lens support member 8a which is a cantilever.

A smooth groove 8c is formed on the upper surfaces of the pair of lens support members 8a so that the lens support members 8a can move by sliding on the projecting portion 6a of the zoom lens 6. As shown in FIG. 2, the free ends of the pair of lens support members 8a are open inside to form an opening 8d. By using this opening 8d, the zoom lens 6 can be easily put in and taken out from the front surface of the lens deck 8. A lens accommodating member 9 having a U-shape in plan view, which constitutes the lens avoiding device B, is connected to the outside of the lens supporting member 8 a via a connecting / rotating member 10. Similarly to the lens deck 8, the lens housing member 9 also has a pair of lens temporary placement members 9a that support the projecting portion 6a of the zoom lens 6 and a stopper member 9b that connects the inner portions of the lens temporary placement members 9a. is doing. Further, a smooth groove 9c is formed on the upper surface of the lens temporary placement member 9a so that it can slide and move on the projecting portion 6a of the zoom lens 6. The inside of the free ends of the pair of lens temporary placement members 9a is open to form a lens receiving port 9d. The opening width of the lens receiving port 9d is substantially the same as the opening width of the opening 8d of the lens deck 8.

The lens housing member 9 is supported by a coupling rotating member 10 that rotatably connects the bosses 9e, 8e protruding from the outer surfaces of the distal ends of the lens temporary placement member 9a and the lens supporting member 8a. During normal operation without lens replacement or maintenance, the lens storage member 9 is rotated to a position parallel to the lens deck 8 and stored in the avoidance position shown by the one-dot chain line in FIG.

Next, the operation of the lens avoidance device B will be described with reference to FIG. When temporarily avoiding the zoom lens 6 mounted on the lens deck 8 from the exposure unit 2, the lens storage member 9 in the avoidance position is rotated around the connecting rotation member 10 and the lens storage member 9 is rotated. The inlet 9d and the opening 8d of the lens deck 8 face each other and abut. Next, the zoom lens 6 is moved along the groove 8c, that is, in the direction orthogonal to the optical axis, passes through the opening 8d and the lens receiving port 9d, and is housed in the lens housing member 9 (FIG. 3A). ).

After that, the lens housing member 9 is rotated to return to the initial avoidance position, and the avoidance of the zoom lens 6 is completed. When another lens 11 is used, it is inserted and set in this state from the front surface of the lens deck 8 (FIG. 3 (b)).

When the avoided zoom lens 6 is reattached to the lens deck 8, the other lens 11 is moved to the outside to open the lens deck 8, and then the operation opposite to the above is performed to reattach.

[0020]

[Effect of the device]

 As described above, in the lens avoidance device of the present invention, since the lens housing member having the lens receiving port is rotated and brought into contact with the lens supporting member having the opening, the lens can be moved. It is possible to temporarily avoid the various lenses in the avoidance place in the photo printing apparatus without moving them to the outside. In addition, since the lens is not fixed even when it moves to the outside, it is easy to remove the lens and there is little risk of dropping it.

Further, a lens storage member is provided in addition to the lens support member, and the lens storage member is rotated to temporarily avoid the lens, so that the avoidance place is diversified and the lens is disposed around the exposure position. The degree of freedom of various devices can be increased. Therefore, it can contribute to downsizing of the photo printing apparatus.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a photographic printing apparatus.

FIG. 2 is a schematic plan view of a lens avoidance device.

FIG. 3 is an explanatory diagram illustrating an operation of the lens avoidance device.

FIG. 4 is a plan view of a conventional lens avoidance device in which the zoom lens itself has an avoidance function.

FIG. 5 is a plan view of a conventional lens avoidance device in which an avoidance place is provided on a lens deck.

[Explanation of symbols]

 A photo printing device B lens avoidance device 2 exposure unit 6 zoom lens 8 lens deck 8a lens support member 8d opening 9 lens storage member 9a lens temporary placement member 9d lens receiving port 10 connecting rotation member

Claims (1)

Claims for utility model registration: 1. An opening for supporting the exterior of a lens mounted on the exposure section of a photographic printing apparatus and for moving the lens in the direction orthogonal to the optical axis of the lens to attach and detach the lens. A lens support member having the same, a lens storage member having a lens receiving port that supports the exterior and moves in a direction orthogonal to the optical axis to store or carry out the lens, and the lens storage member is connected to the lens support member. In addition, the lens avoiding device includes a connecting and rotating member that rotates so that the lens receiving port and the opening portion are in contact with each other so as to face each other and allow the lens to move.