JP2523579Y2 - Plate making camera - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The invention relates to a completely bright room type other surface mounting plate making camera which is easy to handle, compact and can reduce the occupied space.

(Prior art) Regarding a plate-making camera for imposing a multi-page original,
For example, U.S. Patent Nos. 3,998,546, 3,837,742,
Various types are known as described in each specification of 3,920,333 or Japanese Patent Application No. 63-276834 filed by the present applicant. In particular, in the one described in Japanese Patent Application No. 63-276834, the optical path from the platen to the platen is bent by two mirrors, and both the platen and the platen are arranged horizontally, so that the overall length is short and the total height is low. This has the advantage that the whole can be made compact and that an image can be formed on the emulsion surface of the film, as in a plate-making camera that does not use a mirror.

(Problem to be solved by the invention) As described above, although the camera for plate making is being made compact, the overall size is still quite large and it has to be fixedly installed. It is inconvenient to move to a desired position as needed. Therefore, there is still room for improvement in the conventional imposition plate making camera.

The present invention has been made in view of such a point, and by devising the arrangement relationship of a platen, a platen, an imaging lens or a mirror constituting a plate making camera, the overall length is shortened and the size is reduced. It is an object of the present invention to provide a plate-making camera which can be moved to a desired position in accordance with a camera.

Another object of the present invention is to provide a plate-making camera in which the handling of the photosensitive material is facilitated and the position of the center of gravity is lowered for stabilization.

(Means for Solving the Problems) According to the present invention, there is provided a horizontally arranged document table, a mirror for reflecting light from the document table to the side above the document table, and a mirror disposed on an optical path reflected by the mirror. An image forming lens, a platen on which a photosensitive material can be mounted at an image forming position by the image forming lens, a cassette for containing the photosensitive material and supplying the photosensitive material to the platen, and a photosensitive material between the platen. A plate making camera having a transfer means for transferring the original is mounted on one base, and the platen and the mirror are arranged so as to protrude from one side of the base. The cassette is mounted on the lower side of the platen, the photosensitive material is pulled out from the lower side of the platen by the transporting means and supplied to the platen, and the photographed image is taken. Exposure The material is carried out from the upper side of the platen by the carrying means.

Also, the platen is inclined and arranged so that the upper end side is located closer to the outside of the base than the lower end side, and the optical path from the mirror to the platen via the imaging lens is inclined according to the inclination of the platen. Is also good.

(Operation) By arranging the platen and the mirror so as to protrude from one side of the base, and arranging the platen on the other side of the base,
Since the weight distribution to the base is evened and stabilized, and the cassette is loaded under the platen and the photosensitive material is supplied from this cassette, the loading and unloading of the cassette becomes easy. Instead, the position of the center of gravity is shifted downward by loading a heavy cassette, and the entire plate making camera is stabilized. In addition, since the photographed photosensitive material is carried out from the upper side of the platen, the photosensitive material is conveyed in only one direction, and the conveyance path of the photosensitive material is simplified. The optical path from the mirror to the platen via the imaging lens is tilted in accordance with the inclination of the platen, so that the distance between the platen and the platen on the projection plane is shortened, and the length of the optical path is a predetermined length. Can be secured.

(Embodiment) Hereinafter, an embodiment of a plate-making camera according to the present invention will be described with reference to the drawings.

1 and 2, reference numeral 11 denotes a document table. The document table 11 is arranged horizontally on the outer surface of the camera housing 52, and can place a document on a horizontal plane. Alternatively, the document may be sucked by a document suction device using air so that the document does not move unintentionally. An illumination light source for illuminating the original on the original table 11 is disposed diagonally above the original table 11, but is not shown.

Above the document table 11, a mirror 14 for horizontally bending the reflected light from the document on the document table 11 is arranged.
The mirror 14 is held by a holder 34, and the holder 34 is screwed into a feed screw 36. The feed screw 36 is arranged so as to be inclined upward in the figure with respect to the horizontal direction. The holding body 34 is fixed to the feed screw 36 by appropriate guide means.
, But non-rotatably guided around the lead screw 36. The rotation of the feed screw 36 is controlled by a stepping motor or the like.

An imaging lens 16, a movable mirror 18, and a platen 20 are arranged in this order on the optical path reflected by the mirror 14 for the light from the original table 11 side. The imaging lens 16 is held by a holder 38. The holding body 38 is screwed into the feed screw 40.
The lead screw 40 is on the extension of the lead screw 36, and
The feed screw 40 is arranged so as to be inclined upward in the figure with respect to the horizontal direction. It is assumed that a shutter that opens and closes an optical path is attached to the holder 38. Holder 38
Is guided by an appropriate guide means so as to be movable in the direction of the feed screw 40, but is non-rotatably guided around the feed screw 40. The rotation of the feed screw 40 is controlled by a stepping motor or the like.

Most of the camera housing 52 is a dark box, and the platen 11, mirror 14, and imaging lens 16 described above are arranged outside the dark box. Holder 38 of imaging lens 16
Is connected to the dark box via a bellows 25.

The platen 20 is provided in the camera housing 52. The platen 20 can position a relatively large film piece as a photosensitive material at a predetermined position in a horizontal plane by an air suction device (not shown).

All the components including the document table 11, the mirror 14, the imaging lens 16 and the platen 20 described above are arranged on one base 26. The document table 11 and the mirror 14 are arranged so as to protrude from one side of the base 26. On the other hand, the platen 20 is disposed on the other side of the base 26. The upper end side of the platen 20 with respect to the vertical
It is arranged to be tilted so as to be located closer to the outside.
The optical path from the mirror 14 to the platen 20 via the imaging lens 16 is inclined according to the inclination of the platen 20, and the central axis of the optical path is orthogonal to the plane of the platen 20. The two feed screws 36 and 40 are inclined so as to be parallel to the optical path from the mirror 14 to the platen 20 via the imaging lens 16.

The platen 20 can be moved in the X and Y directions within one plane by the X-axis drive base 46 and the Y-axis drive base 47. Such movement in the X and Y directions is performed by rotating a feed screw (not shown) by a stepping motor or the like. The weight of the platen 20 and its drive tables 46 and 47 is
Since it is considerably heavier than the combined weight of 1 and mirror 14,
By arranging the platen 11 and the mirror 14 and the platen 20 with respect to one base 26 as described above, one base
The weight distribution to 26 is stabilized to achieve equalization.

An appropriate number of rotating members 27 such as rollers are provided on the bottom of the base 26 so that the base 26 can be easily moved to a desired position.
Are attached, and an appropriate number of fixed legs 28 are attached so that the moved base 26 can be fixedly installed at a desired position.

A mask plate 48 is disposed immediately before the film holding surface of the platen 20. The mask plate 48 includes left and right mask plates and front and rear mask plates, and by independently moving these mask plates, the opening width in the X and Y directions can be set arbitrarily.

In the camera housing 52, a cassette 41 is loaded near the lower side of the platen 20. The cassette 41 accommodates a film 43 as a roll-shaped photosensitive material, and a door 68 provided on a side surface of the camera housing 52 as shown in FIG.
The cassette 41 can be loaded and unloaded by opening. The film 43 pulled out from the cassette 41 is a cutter.
At 53, the film is cut into pieces 45 of an appropriate size. The platen 20 can be lowered until its lower end reaches the side of the cutter 53. A transport device 55 that transports the film piece 45 to the platen 20 is disposed to face the front surface of the platen 20. The transport device 55 can move up and down along the front surface of the platen 20 while sucking the film piece 45.After transporting the film piece 45 to a predetermined position, the film piece 45 is transferred to the platen 20, and the film piece 45 is transferred to the platen 20. It is set to 20 predetermined positions. An air suction pump 64 is arranged beside the cassette 41. The pump 64 sucks air from the suction groove on the surface of the platen 20 via the suction pipe 66, and the film piece 45 set on the surface of the platen 20 is drawn.
Is adsorbed on the surface of the platen 20. Further, the transfer device 55 can also suck the film piece 45.

Above the platen 20, a catcher 56 capable of sandwiching the photographed film piece 45 with a pair of rollers is disposed. The catcher 56 receives the photographed film piece 45 sent from the platen 20 side by the transport device 55 and holds the film piece 45, and the catcher 56 transports the sandwiched film piece 45 to the transport path 58.
Can be rotated in a vertical plane between the feeding positions. The transport path 58 transports the film piece 45 downward, has a pair of transport rollers at a fixed interval, and has a guide plate disposed between the pair of transport rollers. The lower end of the transport path 58 is branched to the processor 60 side including the developing device and the bright room carrier 62 side, and the film piece 45 is selectively carried into either the processor 60 or the bright room carrier 62. Has become.

The movable mirror 18 is supported so as to be rotatable about an axis 44, and advances at an angle of 45 degrees with respect to the optical axis of the imaging lens 16 as indicated by a solid line in FIG. A posture in which the shaft is bent to the side and a posture in which the shaft rotates in a substantially horizontal direction and retracts from the optical path of the imaging lens 16 as shown by a chain line 18A in FIG. When the movable mirror 18 has advanced on the optical axis of the imaging lens 16, the optical axis of the lens 16 is
Bend at right angles towards 24. The movable mirror 18 is a lens
On the optical axis of the lens 16 in a state retracted from the optical axis of 16,
The platen 20 is located as described above. The indicator plate 24
The movable mirror 18 is arranged at a position conjugate with the surface of the platen 20. It is assumed that the index plate 24 has center lines perpendicular to each other in the X and Y directions. An illumination box 30 can be placed over the index plate 24. By rotating the illumination box 30 about an appropriate axis, the portion of the index plate 24 can be opened and closed. An illumination light source 31 for illuminating the index plate 24 is provided in the illumination box 30 and a mirror for reflecting illumination light from the illumination light source 31 and irradiating the index plate 24 with the light.
32 are arranged.

When the movable mirror 18 is retracted from the optical path of the image forming lens 16, an image forming optical system for forming a document on the document table 11 with respect to the platen 20 is formed. On the other hand, the movable mirror 18 is
In the state of having advanced on the optical path, the illumination light source on the original side is turned on, and the illumination light source 31 on the index plate 24 side is turned off, whereby an image forming optical system of the original on the index plate 24 can be formed.
Further, by turning off the illumination light source on the document side and turning on the illumination light source 31 on the index plate 24, a projection optical system of the index plate 24 with respect to the original table 11 can be formed.

 Next, the operation of the above embodiment will be described.

First, one document is placed on the document table 11 with the movable mirror 18 retracted from the optical axis of the imaging lens 16 as indicated by a chain line 18A. In this state, the illumination light source on the original side is turned on, an image of the original is formed on the index plate 24 via the mirror 14 and the imaging lens 16, and this imaging state is opened from outside by opening the illumination box 30. Observe. Since the center line in the orthogonal direction is marked on the index plate 24, the document is moved on the platen 11 so that the center mark in the X and Y directions on the document is positioned on the center line. I do.

After the alignment of the original is completed, at least one tape or the like serving as a mark is attached along the outer periphery of the text portion of the original image formed on the index plate 24 in the X direction and the Y direction. Next, an image of the first document that has been aligned is photographed on a film piece held on the platen 20. In shooting, the shutter provided at the position of the imaging lens 16 is closed, the movable mirror 18 is retracted from the optical axis of the imaging lens 16,
The shutter is opened for a predetermined time and then closed. At this time, the platen 20 is positioned at a predetermined position in the X and Y directions, and the image of the document is printed at a predetermined position on the film piece.

When taking the next document, the illumination light source on the document side is turned off, the movable mirror 18 is advanced on the optical axis of the imaging lens 16,
The illumination box 30 is closed, the illumination light source 31 on the index plate 24 is turned on, and the image of the index 24 is projected onto the document table 11 via the imaging lens 16 and the mirror 14. On the document table 11, a center line in the orthogonal direction written on the index plate 24 and a mark attached to the index plate 24 are projected. Therefore, the next original is placed on the original platen 11, and the original is aligned so that the outer periphery of the text portion of the original follows the mark.

When the positioning of the document is completed, an image is photographed on the document on the film piece on the platen 20 by the above-described procedure. Hereinafter, by repeating the operation of projecting the image of the index plate 24 onto the platen 11, aligning the original in the above-described procedure, and then photographing the original on a film piece, the original for a large number of pages is repeated. Can be photographed on a piece of film.

FIG. 4 shows a specific example of the finished state of the above-described multi-surface shooting, which is an example of imposition of eight pages of the text, a front plate, a first plate, and left binding. The triangle mark in FIG. 4 indicates the direction of the top of the main page. The numbers 1, 16, 13, 4,... Indicate the number of pages. The direction of the heavens and the order of the number of pages are defined as a convention in print binding. O ₁ , O ₂ , O ₃ ,... Are the center points of the respective pages, and are also the optical axis positions when the pages are photographed. If the order of photographing the page number order from the lowest, in the first round of shooting coordinate center O ₁ of the platen should be coincident with the optical axis, then,
The platen is moved in the order of O ₄ , O ₅ , O ₈ , O ₇ ,. After the shooting of the page of the text is completed,
Off-page information marks (register marks, signatures, etc.) indicating the front and back of printing and the folding position required for bookbinding are photographed, and all photographing is completed.

What is important here is that there must be no unexposed portions other than the image portion on the entire surface of the photosensitive material, and the image portion must not be double-exposed. For that purpose, accurate control of the mask plate without excess or deficiency is required.

Therefore, next, the position of the platen and the opening amount of each mask plate at the time of photographing as described above will be described. FIG. 5 shows the position of the platen and the exposure range for each photographing in the case of the imposition. First, in the first round of shooting, combined point O ₁ on the platen 1 to the optical axis, by adjusting the amount of opening of each mask plate, exposing the portion of the rectangular Abji.

In the second photographing, the point O ₄ on the platen 1 is aligned with the optical axis, and the opening amount of each mask plate is adjusted so that the rectangular shape is obtained.
Expose the deon part.

In the third round of shooting, combined point O ₅ on the platen 1 to the optical axis, by adjusting the amount of opening of each mask plate, rectangular
Expose a portion of the rszy.

In the fourth round of shooting, combined point O ₈ on the platen 1 to the optical axis, by adjusting the amount of opening of each mask plate, rectangular
The part of pqxw is exposed.

In the fifth shooting, the point O ₇ on the platen 1 is aligned with the optical axis, and the opening amount of each mask plate is adjusted to obtain a rectangular shape.
Expose the kmut part.

In the sixth shooting, the point O ₆ on the platen 1 is aligned with the optical axis, and the amount of opening of each mask plate is adjusted to obtain a rectangular shape.
Expose the mnvu part.

In the seventh shooting, the point O ₃ on the platen 1 is aligned with the optical axis, and the amount of opening of each mask plate is adjusted to obtain a rectangular shape.
Expose the ghnm part.

In the eighth photographing, the point O ₂ on the platen 1 was aligned with the optical axis, and the opening amount of each mask plate was adjusted to obtain a rectangular shape.
Expose the fgml part.

In the ninth shooting, the point O ₉ on the platen 1 was aligned with the optical axis, and the amount of opening of each mask plate was adjusted to obtain a rectangular shape.
Expose bclj part.

In the tenth round of shooting, combined the points O ₁₀ on the platen 1 to the optical axis, by adjusting the amount of opening of each mask plate, exposing the portion of the rectangular CDHF.

In the 11th round of shooting, combined the points O ₁₁ on the platen 1 to the optical axis, by adjusting the amount of opening of each mask plate, exposing the portion of the rectangular Ikqp.

In the 12th round of shooting, combined the points O ₁₂ on the platen 1 to the optical axis, by adjusting the amount of opening of each mask plate, exposing the portion of the rectangular Tvyx.

In the 13th round of shooting, combined the points O ₁₃ on the platen 1 to the optical axis, by adjusting the amount of opening of each mask plate, exposing the portion of the rectangular Nosr.

Of the above exposures, the first to eighth exposures are for the photographing of eight pages of the text page, the ninth exposure is for the backing, and the tenth to thirteenth exposures. Is a photograph of a cross-shaped register mark.

In FIG. 5, X and Y are the coordinate axes of the platen 1, A is the horizontal dimension of the platen 1, B is the vertical dimension, C is the horizontal dimension of the photosensitive material, D is the vertical dimension, and E is the horizontal dimension of one page of the text. , F
Denotes the vertical dimension, K denotes the length of the grip, V denotes the dove (gap between pages), and W denotes the width of the backrest.

The mirror 14 can be moved in the horizontal direction by the rotation of a feed screw 36, whereby the platen 11 and the imaging lens 16 can be moved.
The magnification can be converted by converting the distance with the distance. Also, the imaging lens 16 can be moved in the horizontal direction similarly,
Adjustment of defocusing due to zooming and other general focus adjustments can be performed.

The plate making camera described above is integrally assembled on one base 26. The base 26 is a rotating body if necessary
Because it can be moved to the desired position by 27,
The plate-making camera can also be moved to any desired position, and the moved plate-making camera is brought into contact with the lower surface of the fixed leg 28 by abutting the floor or the like of the building to float the rotating body 27 from the floor or the like. , Can be fixedly installed. The platen 11 and the mirror 14 are arranged so as to protrude from one side of the base 26, and the platen 20 is mounted on the other side of the base 26.
Is arranged so that the upper end side is located closer to the outside of the base 26 than the lower end side, and the weight distribution to the base 26 is equalized and stabilized. It can be easily moved. The optical path from the mirror 14 to the platen 20 via the imaging lens 16 is a platen.
Since it is tilted according to the tilt of 20, the length of the optical path can be secured to a predetermined length while shortening the distance between the platen 11 and the platen 20 on the projection plane, This makes it possible to reduce the size of the plate making camera, and from this point of view, it is possible to obtain a plate making camera that can be easily moved as required.

As shown in the illustrated embodiment, if the film is supplied to the platen 20 from the cassette 41 loaded below the platen 20, the heavy cassette 41 can be loaded and unloaded at a low position. The loading / unloading becomes easy, the loading of the heavy cassette 41 lowers the position of the center of gravity, stabilizes the entire plate making camera, and from this point, the multi-page imposition plate making camera can be easily moved as necessary. There is an advantage that can be. Further, since the photographed film is carried out from the upper side of the platen 20, there is an advantage that the film transport path becomes linear from bottom to top, and the film transport path becomes simple.

Although there is no direct relation to the gist of the present invention, according to the above-described embodiment, by controlling the stepping motor of each unit by a computer or the like, the setting of the film on the platen 20 allows the film to be transferred to each area of the film. A series of operations from imprinting of a document in a predetermined order to development can be performed in a fully automatic manner and in a bright room by an instruction of one operator on the operation side.

According to the invention, the platen and the mirror are arranged so as to protrude from one side of the base, and the platen is arranged on the other side of the base, so that the weight with respect to the base is obtained. The distribution is equalized and the stabilization is achieved. In addition, since a cassette is loaded below the platen and the photosensitive material is pulled out of the cassette and supplied to the platen, a heavy cassette can be loaded and unloaded at a low position. In addition to being easy, the loading of a heavy cassette lowers the position of the center of gravity, so that the entire plate-making camera can be stabilized.

According to the invention of claim 2, the platen is disposed so as to be inclined such that the upper end side is located closer to the outside of the base than the lower end side, and the optical path from the mirror to the platen via the imaging lens is a platen. The length of the optical path is secured to a predetermined length while shortening the distance between the platen and the platen on the projection plane, making the plate-making camera more compact. Can be achieved.
Therefore, the plate-making camera can be easily moved together with the base as needed, and the plate-making camera can be freely arranged at any desired position.

[Brief description of the drawings]

1 is an external side view showing an embodiment of a plate making camera according to the present invention, FIG. 2 is a side view showing an internal configuration of the embodiment, FIG. 3 is a plan view showing an internal configuration of the embodiment, 4th
FIG. 5 is a front view showing an example of a format of an image photographed on one photosensitive material by the plate making camera according to the present invention, and FIG. 5 is a view for explaining how images are sequentially photographed in accordance with the same format. It is a front view. 11 ... platen, 14 ... mirror, 16 ... imaging lens, 20 ...
... platen, 26 ... base, 27 ... rotating body, 41 ... cassette, 45 ... photosensitive material.

Claims (2)

(57) [Scope of request for utility model registration] An original platen which is placed horizontally and on which an original can be placed; a mirror which is arranged above the original platen and reflects light from the original platen to the side; An imaging lens arranged on an optical path, a platen arranged at an image forming position by the imaging lens to which a photosensitive material can be mounted, and a cassette for storing the photosensitive material and supplying the photosensitive material to the platen And a conveying means movably arranged along the platen and transferring the photosensitive material to and from the platen, comprising: a base; one of the bases; The platen and the mirror are arranged on one side, and the platen is arranged on the other side. The cassette is loaded below the platen, and the photosensitive material is placed on the platen by the transport means. Lower Et drawn in is supplied to the platen, process camera which photographed the photosensitive material is characterized in that is adapted to be unloaded from the upper platen by the conveying means. 2. A platen is disposed so as to be inclined such that an upper end side is located closer to an outer side of the base than a lower end side, and an optical path from a mirror via an imaging lens to the platen is adjusted according to the inclination of the platen. 2. The plate-making camera according to claim 1, wherein the camera is inclined.