JPH09211742A - Microfilm camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the exposure of a film caused by the fact that a photographer inadvertently forgets to take out a cassette by locking a lens cover at a closing position, linked with the loading of the cassette. SOLUTION: A locking rod 130 as a first locking means is interposed between the lens cover 122 and a cassette cover 68. This locking rod 130 is horizontally installed under the top surface of a casing 20. In other words, one end (front side) of the locking rod 130 is projected toward the ront surface of the casing 20 and the other end is inserted through a guide plate 132 fixed on the top surface of the casing 20 and projected into a lens housing chamber 120. The locking rod 130 has the habit of returning toward the front surface by a coil spring 134. When the cassette cover 68 is closed, the locking rod 130 is pushed back and the rear end of the rod 130 is inserted/engaged with a locking plate 138. Therefore, the lens cover 122 is locked at the closing position and exchange of lenses is impossible. In other words, when the cassette 64 is loaded and the cassette cover 68 is closed, the lens cover 122 is never opened.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a microfilm camera in which a roll film for photographing a document original by a slit exposure method is housed in a microfilm cassette, and the cassette and the photographing lens can be exchanged.

[0002]

2. Description of the Related Art A microfilm camera for photographing a document original on a roll film by a slit exposure method is known which uses a cassette containing a roll film.

In this cassette, in addition to a supply reel and a take-up reel on which the roll film is wound from both ends, a photographing roller around which the roll film is wound is accommodated. Then, the roll film wound around the photographing roller is exposed inside the photographing opening provided in the cassette, and the image of the original is transferred onto the roll film through the photographing opening.

A shutter for closing the photographing opening is attached to the cassette so that the shutter opens when the cassette is loaded in the camera and the shutter closes when the cassette is taken out. That is, the shutter closes when the cassette is not loaded into the camera to prevent inadvertent exposure of the film.

On the other hand, in the case of microfilm, the photographing reduction ratio may be changed depending on the size of the original and the photographing method.
Therefore, it is possible to replace the taking lens with an appropriate reduction ratio.

[0006]

[Problems of the prior art] Since the taking lens is close to the taking opening of the cassette, if the taking lens is replaced with the cassette still loaded, outside light enters the taking opening and the film is exposed. To do. Therefore, when exchanging the taking lens, the cassette must be removed, but inadvertently forget to remove the cassette and expose the film.

It is also conceivable to load the cassette with the lid (lens lid) of the lens accommodating chamber open when replacing the taking lens. Also in this case, the film is exposed.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and provides a microfilm camera capable of preventing the film from being exposed due to careless removal of the cassette when the photographing lens is replaced. Is the first purpose.

A second object of the present invention is to provide a microfilm camera capable of preventing a film from being unintentionally exposed by loading a cassette with the photographic lens housing chamber kept open.

[0010]

According to the present invention, a first object of the present invention is to provide a cassette for accommodating a roll film on which an image is photographed by a slit exposure system and which can be attached to and detached from a cassette loading chamber; In a microfilm camera having a shutter for opening and taking a picture, and a replaceable taking lens, a lens lid for closing a housing chamber of the taking lens to shield light, and a lens lid which is closed in association with loading of the cassette. A first locking means for locking in position, a microfilm camera,
Is achieved by

Here, it is desirable that the first locking means is interlocked with the loading of the cassette itself. However, if the first locking means has a cassette lid for closing the cassette loading chamber, it may be interlocked with the closing operation of the cassette lid. That is, the lens lid cannot be opened when the cassette lid is closed, and the photographic lens can be replaced by opening the lens lid only when the cassette lid is open.

A second object is a cassette which accommodates a roll film on which an image is photographed by a slit exposure method and which is attachable to and detachable from a cassette loading chamber, and a cassette which is provided in this cassette and is opened when the cassette is loaded so that an image can be taken. A shutter,
In a microfilm camera including a replaceable photographing lens, a lens lid that closes a storage chamber of the photographing lens to shield light, and a second locking unit that interlocks with an opening operation of the lens lid to prevent loading of the cassette. And a microfilm camera comprising:

Both the first locking means and the second locking means may be provided. Here, the second locking means can be configured so that the stopper of the cassette is interlocked with the lever that swings by the opening / closing operation of the lens lid.

[0014]

1 is a perspective view showing an appearance of an embodiment of the present invention, FIG. 2 is a conceptual view thereof, FIG. 3 is a side view showing an internal structure, FIG. 4 is a plan view, and FIG. 5 is a book. 8 is a view showing an optical system of a microfilmer as a microfilm camera according to the present invention as seen from the direction of arrow V in FIG. 6, FIG. 6 is a perspective view of this optical system, and FIG. 7 is a plan view showing the internal structure of the cassette. Is a plan view showing a main part of the microfilm filmer, FIG. 9 is a side view thereof, and FIG. 10 is a side view showing the same operation.

1 to 4, reference numeral 10 is a scanner, 1
2 is an auto feeder (auto document feeder, ADF for short), 14 is a microfilmer, 16 is a turn unit, and 18 is a stacker. The auto feeder 12 is detachably attached to the front of the scanner 10. The microfilmer 14 has a housing 20 formed in an L shape in plan view (FIG. 4), and the housing 20 surrounds the rear surface and the left side surface of the scanner 10. 2 to 4, reference numeral 22 denotes a multi sorter, which can be replaced with the turn unit 16.

In FIG. 2, reference numeral 24 is a control unit, which comprises a display 26 and a keyboard 28. The control unit 24 is for performing status display and condition input / setting for controlling the entire apparatus. For example, for the scanner 10, selection of reading conditions
Settings such as selection / setting of a shooting mode are performed for the microfilmer 14.

In FIG. 2, 30 is a personal computer (P
C, workstation WS may be used), image information and attribute information read by the scanner 10 are input,
The image is subjected to predetermined image processing and stored in a storage device such as the magneto-optical disk 32. It also outputs to a printer (not shown) as needed. It can also be transferred to another computer or image processing apparatus.

The scanner 10 includes an automatic feeder 12 to 1
It has a conveying means for horizontally and linearly feeding the documents (original documents) 34 taken in one by one toward the rear. First, the document 34 is read by a barcode reader (BCR) 36, which is a barcode attached to a predetermined position of the document 34. This bar code determines the condition setting based on the document format number, etc.
It includes information for automatically selecting the reading conditions of the CR 42 and the image scanner 44 from preset modes.

In this mode, for example, the image cut-out position, single-sided / double-sided scanning, ON / OFF of the scanner 10,
And so on. This read data is PC
It is sent to the (WS) 30, and the PC (WS) 30 sends an instruction number for the PC to the imprinter 40 described later. The barcode reader 36 may be an OCR (optical character reader) that reads characters instead of the barcode.

Document 34 is then patch reader 38 (FIG. 3).
Pass through. The patch reader 38 detects switching information of marks such as a blip attached when photographing a microfilm. For example, large / medium / small classification data can be distinguished by the type of partition plate inserted between documents. To detect. The patch reader 38 may detect information for automatically switching on / off of the scanner 10. These data are transferred as document or page attribute information to the external PC (WS) 30 via the data transfer interface.

The document 34 is then transferred to the imprinter (IMP) 4
Numbered by 0. For example, an instruction number output by the PC (WS) 30 to the output of the barcode reader 30 or a number indicating the order of the documents 34 set by the control unit 24 is added. Next, OCR42 is document 34
The document number or the like attached to is read and sent to the PC (WS) 30. This data is stored as a document or page attribute information together with the image information read by the scanner 44 in the image described later, and also external P via the interface.
It is transferred to the C (WS) 30.

Image scanners (CCD) 44 and 44
And has a CCD line sensor. That is, for images on the front surface and the back surface of the document 34 moving at a constant speed,
Each line sensor is arranged so as to be orthogonal to the image moving direction, and the image is continuously read as the document 34 moves (moves in the sub-scanning direction). That is, the image is read by the slit exposure method.

In this CCD 44, the instruction input from the control unit 24 and the PC (WS) 3 in advance are used.
The image of a partial area of the document is cut out from 0 according to the input instruction, and transferred to the PC (WS) 30 via the interface together with the attribute information of the image. In addition, the mode is automatically selected from the format number of the document 34 read by the BCR 36, the cutting position, single-sided / double-sided, scanner on / off, etc. are determined, and the image is read according to the determination result. To do. Furthermore, conditions such as the cut-out position designated by the PC (WS) 30 are obtained based on the document format number detected by the BCR 36, and the image data along with other attribute information is sent to the PC (WS) 3
You may make it transfer to 0.

When this apparatus is used as a scanner, a turn unit 16 is connected to the rear surface of the scanner 10 as shown in FIG. The turn unit 16 makes a U-turn of the document 34 discharged from the rear surface of the scanner 10 upward, and feeds the upper portion inside the scanner 10 in the reverse direction.
Then, the stacker 1 provided on the upper front surface of the scanner 10
Collect in 8. The stacker 18 includes a path stacker 46 (FIG. 1) that reverses and stacks documents that have undergone normal image reading processing in the same order, and a reject stacker 48 that separates and stacks documents 34 that need to be reprocessed when an error occurs.
(Fig. 1) and. The reject stacker 48 can also be used to divide the processed documents into two groups and classify and collect only one of the groups.

On the connection surface between the turn unit 16 and the scanner 10, a separable joint (not shown) is provided for transmitting the driving force of the conveying roller in the scanner 10 to the turn unit 16 side. Therefore, in the state of FIG. 2A in which the turn unit 16 is connected to the scanner 10, the document can be conveyed at the same speed in the scanner 10 and the turn unit 16. Documents that are too thick to be transported in the turn unit 16 are collected in the straight stacker 50.

A multi-sorter 22 may be connected instead of the turn unit 16. The multi-sorter 22 sorts and stacks the processed documents 34 discharged from the scanner 10 and stacks thick documents on the straight stacker 5 as well.
Collect at 0A.

The above structure is of the scanner type shown in FIG. 2A. When a microfilm photographing function is added to this apparatus, the microfilmer 14 is placed between the scanner 10 and the turn unit 16. Intervene. FIG. 2B shows the structure of the scanner / microfilmer type in this way. The microfilmer 14 has the L-shaped casing 20 in plan view as described above.
An optical system for guiding the images on both the front and back sides of the document 34 to the microfilm is housed in 0.

As shown in FIGS. 4 to 6, this optical system is long in the direction orthogonal to the conveying direction of the document 34 (direction of arrow A in FIG. 6) and is diagonally opposed to the front and back surfaces.
The mirror 52 and the second mirror 54, and both mirrors 52, 5
The third that simultaneously reflects the front and back images shown in FIG.
A mirror 56, a fourth mirror 58 and a fifth mirror 60,
It has two sets of taking lenses 62, 62. The optical system may be configured to photograph only one of the front surface and the back surface.

The photographing lenses 62, 62 face the microfilm cassettes 64, 64.
66, which is housed in a car and runs at a constant speed
(FIG. 6) is photographed by the slit exposure method. For this reason, as shown in FIG.
The images on the front and back sides of the image are printed side by side in the width direction of the film 66.

Here, the cassettes 64, 64 are inserted from the front into a cassette loading chamber 67 that opens vertically in two steps on the front of the housing 20, that is, on the left front of the stacker 18. The loading chamber 67 is covered with a cassette lid 68 after loading the cassettes 64, 64 to prevent external light from entering the cassette loading chamber 67. Thus, by arranging the cassettes 64 in upper and lower two stages and simultaneously photographing the images of the same document, two microfilms can be simultaneously photographed, which is efficient. Of course, only one cassette 64 can be loaded so that only one microfilm can be photographed.

As shown in FIG. 7, the cassette 64 has a rectangular case 70 and is supplied in the longitudinal direction.
A reel 72, a take-up reel 74,
The photographing roller 76 is arranged. An opening 78 for photographing is provided on the wall of the case 70 facing the photographing roller 76, and a shutter 80 is slidably provided along the inner surface of the wall. The shutter 80 has an opening 78.
A window (not shown) for opening and closing is provided.

The shutter 80 is guided by a guide pin, one end of which is pulled by a coil spring 82, and a pin 84 attached to the other end is guided by a guide elongated hole 86 so as to be movable. The pin 84 is transferred in the guide elongated hole 86 by a slide member 88 provided in the case 70. That is, the pin 84 is guided and moved by the long hole 90 and the guide long hole 86 provided in the slide member 88, and pulls and moves the shutter 80.

The slide member 88 is used for loading the cassette 64 into the cassette loading chamber 67.
It engages with a claw (not shown) provided on the inner surface and is pushed rightward in FIG. Along with this, the pin 84 moves to the right in the elongated hole 86 to pull and move the shutter 80, and the window thereof is aligned with the opening 78 of the case 70. As a result, the opening 78 is opened and the camera is ready for shooting.

The film 66 is guided from the supply reel 72 to the three guide rollers 92 and wound around the photographing roller 76, and further wound around the take-up reel 74 through another guide roller 94. Nip rollers 96, 96 are pressed against the film 66 that is in close contact with the photographing roller 76 from both sides to ensure the close contact between the film 66 and the photographing roller 76.

The nip rollers 96 are attached to the case 70.
Is held at the tips of levers 98, 98 that are long in the longitudinal direction. The levers 98, 98 are given a habit of returning to the photographing roller 76 side by a torsion spring (not shown).

Reference numerals 100 and 100 are mark photographing lenses which are arranged adjacent to the sides of the photographing lenses 62 and 62. The optical axes of these lenses 100, 100 are inclined with respect to a line perpendicular to the film 66 in the film length direction, that is, the film running direction. Also, on this optical axis, for example, L
Digital image generators 102, 102 (only one of which is shown) composed of an ED (light emitting diode) array are arranged in the width direction of the film. The digital image generator 102
It is also possible to use one as a single unit and to simultaneously image the two microfilms 66, 66 through the mark photographing lenses 100, 100.

The digital image generator 102 generates a one-dimensional image which changes in synchronization with the traveling speed of the film 66, and the image is taken through the lens 100 on the traveling film 66. As a result, other data can be imprinted on film 66 adjacent to or over the image of the document.

The case 70 of the cassette 64 is curved outward so that the short side 70A (see FIG. 7) facing the photographing lens 62 is symmetrical with respect to the central photographing opening 78. When the cassette 64 is loaded in the cassette loading chamber 67, both sides of the short side 70A of the case 70 are positioned by the positioning members 67A and 67A as shown in FIG. Since the short side 70A is curved, in this state, the vicinity of the center of the short side 70A approaches the photographing lens 62 side from between the positioning members 67A and 67A.

Therefore, the optical axis of the mark photographing lens 100 is less likely to interfere with the edge of the opening 78 of the case 70, and the layout design of the lens 100 is facilitated. Also the opening 7
The size of 8 can also be reduced, and accordingly, the movement amount of the shutter 80 is also reduced. As a result, the drive mechanism of the shutter 80 can be downsized, and a rational arrangement suitable for downsizing the cassette 64 can be achieved.

Next, the first and second locking means for restricting the procedure for exchanging the lens and the cassette 64 will be described. The taking lenses 62, 62 are fixed to a common substrate 110 to form a lens assembly 112, as shown in FIGS. The lens assembly 112 includes a cover 114 fixed to the substrate 110 and covering both photographing lenses 62, 62, and a hook handle 116 fixed to an upper portion of the cover 114.
And the light blocking plate 11 extending between the two taking lenses 62, 62.
8 and so on.

A lens accommodating chamber 120 for accommodating the lens assembly 112 is provided above the housing 20 of the microfilmer 14. The lens housing chamber 120 has a housing 20.
It is opened and closed by a lens lid 122 provided on the upper surface of the. The lens lid 122 has a substantially square shape in plan view (see FIG. 8),
The rear part is held openably and closably by a hinge 124, and the front part can be locked by a manual locking mechanism (not shown).

The lens assembly 112 includes the lens lid 12
In the state in which 2 is opened, the hook handle 110 is gripped and taken in and out from the lens housing chamber 120 from above. That is, in the lens accommodating chamber 120, a pair of guide members 126, 1 with which the side edges of the substrate 110 of the lens assembly 112 engage.
26 (FIG. 8) is fixed, and the lens assembly 112 can be fixed at a predetermined position in front of the cassettes 64, 64 while the substrate 110 is guided by the guide members 126, 126. In this stored state, the light blocking plate 11 of the lens assembly 112
8 prevents the leakage of light between the two lenses 62, 62.

An antireflection material 128 such as a black cloth is attached to the opening edge of the lens housing chamber 120, that is, the opening edge with which the edge of the lens lid 122 abuts, to prevent the entry of outside light.

A lock rod 130 as a first locking means is interposed between the lens lid 122 and the cassette lid 68. The lock rod 130 is horizontally attached to the lower side of the upper surface of the housing 20. That is, one end (front end) of the lock rod 130 projects to the front surface of the housing 20, and the other end penetrates the guide plate 132 (FIG. 9) fixed to the upper surface of the housing 20 and projects into the lens housing chamber 120. There is.

A coil spring 134 is attached to the lock rod 130.
The habit of returning to the front is given by (FIG. 9). The front end of the lock rod 130 faces the pushing plate 136 fixed to the inner surface of the cassette lid 68. Therefore, when the cassette lid 68 is closed, the lock rod 130 compresses the coil spring 134, and the other end (rear end) of the lock rod 130 enters the lens housing chamber 120. Further, when the cassette lid 68 is opened, the lock rod 130 is withdrawn from the lens housing chamber 120.

On the lower surface of the lens cover 122, the lock plate 13 having a small hole into which the rear end of the lock rod 130 is inserted.
8 is fixed. At the position indicated by the solid line in FIG. 9 in which the lens lid 122 is closed, when the cassette lid 68 is closed, the lock rod 130 is pushed backward and the rear end of the lock plate 138.
Be involved. Therefore, in this state, the lens lid 122 is locked in the closed position, and the lens cannot be replaced.

That is, when the cassette 64 is loaded and the cassette lid 68 is closed, the lens lid 122 is not opened. Therefore, there is no possibility of exposing the film 66 by opening the lens cover 122 with the cassette 64 still loaded. The cassette lid 68 can be locked in the closed position by a manual lock mechanism (not shown).

The second locking means is composed of a lever 150 which swings about the center as a fulcrum and a stopper 152 (FIGS. 9 and 10). One end of the lever 150 can contact the lower edge of the lock plate 138 of the lens lid 122, and the other end of the lever 150 has a stopper 152.
It is connected so that it can move back and forth within 7. The lever 150
Is urged by a tension spring 154 in a direction to advance the stopper 152 into the cassette loading chamber 67, 67.

Therefore, in the position shown by the solid line in FIG. 9 with the lens lid 122 closed, the lock plate 138 pushes down one end of the lever 150, and the other end of the lever 150 causes the stopper 152 to retract from the cassette loading chamber 67. Therefore, the lens lid 12
When 2 is closed, the cassette 64 can be loaded.

On the contrary, when the lens cover 122 is opened, the lever 150 is returned to the state of FIG. 10 by the spring 154, and the stopper 152 enters the cassette loading chamber 67, 67. Therefore, the loading of the cassettes 64, 64 is blocked. Therefore, it is prevented that the cassette 64 is loaded by mistake and the film is exposed while the lens cover 122 is opened.

In the above embodiment, the lock rod 130 is used.
The first locking means formed in 1 restricts the opening / closing of the lens cover 122 in conjunction with the opening / closing of the cassette cover 68. Therefore, from the opening edge of the cassette loading chamber 67
It is possible to reliably prevent the film from being exposed to the outside light, and the light-shielding property is improved. However, instead of the cassette lid 68, the lens lid 122 may be locked in conjunction with the loading operation of the cassette 64 itself.

[0052]

As described above, according to the first aspect of the present invention, since the lens lid is locked in the closed position in association with the loading of the cassette, it is possible to prevent the lens lid from being opened while the cassette is loaded, and the film is designed. Contrary to the above, there is no possibility of exposing. If the loading of the cassette is detected from the fact that the cassette lid is closed, it is possible to more reliably prevent external light from entering the cassette (claim 2).

According to the third aspect of the present invention, since the second locking means for prohibiting the loading of the cassette with the lens lid open is provided, the cassette is loaded with the lens lid open and the film is loaded. No more exposing to light.

The second lock means is formed of a lever that swings when the lens lid is closed and a stopper that interlocks with the swing of the lever and advances into the cassette loading chamber to prevent loading of the cassette. Is possible (Claim 5). Further, when both the first locking means and the second locking means are provided, the effects of both locking means can be obtained, and exposure against the intention of the cassette can be more surely prevented.

[Brief description of drawings]

FIG. 1 is an external perspective view of an embodiment of the present invention.

[Figure 2] Similarly, its conceptual diagram

FIG. 3 is a side view showing the internal structure.

FIG. 4 is a plan view

5 is a V in FIG. 4 showing an optical system of a microfilmer as a microfilm camera according to the present invention.
Arrow view

FIG. 6 is a perspective view of this optical system.

FIG. 7 is a plan view of the cassette.

FIG. 8 is a diagram showing a main part of a microfilmer.

FIG. 9 is a side view of the same.

FIG. 10 is a side view showing the same operation.

[Explanation of symbols]

10 Scanner 12 Auto Feeder (ADF) 14 Micro Filmer 16 Turn Unit 18 Stacker 20 Housing 22 Multi Sorter 24 Control Unit 30 Personal Computer (PC) or Workstation (WS) 34 Documents (Original) 64 Micro Film Cassette 66 Roll Film 67 Cassette loading chamber 68 Cassette lid 76 Shooting roller 78 Shooting opening 80 Shutter 112 Lens assembly 120 Lens accommodating chamber 122 Lens cover 130 Lock rod as first locking means 150 Lever forming second locking means 152 Second Stopper forming the locking means of

Claims (5)

[Claims] 1. A cassette capable of accommodating a roll film on which an image is photographed by a slit exposure method and detachable from a cassette loading chamber, and a shutter which is provided in this cassette and which can be opened and photographed when the cassette is loaded. In a microfilm camera including a taking lens, a lens lid that closes a housing chamber of the taking lens to shield light and a first locking unit that locks the lens lid in a closed position in association with loading of the cassette. A microfilm camera characterized by being provided. 2. The microfilm camera according to claim 1, further comprising a cassette lid for closing the cassette loading chamber, wherein the first locking means locks the lens lid in conjunction with a closing operation of the cassette lid. . 3. A cassette capable of accommodating a roll film on which an image is photographed by a slit exposure method and which can be attached to and detached from a cassette loading chamber, and a shutter which is provided in this cassette and which can be opened and photographed when the cassette is loaded. In a microfilm camera including a photographic lens, a lens lid that closes a storage chamber of the photographic lens to shield light, and a second locking unit that prevents loading of the cassette in association with an opening operation of the lens lid. A microfilm camera characterized by being provided. 4. The microfilm camera according to claim 1 or 2, further comprising a second lock unit that interlocks with the opening operation of the lens lid to prevent the cassette from being loaded. 5. The second locking means is a lever that swings by opening and closing the lens lid, and moves into and out of a cassette loading chamber in association with the swinging of the lever to load the cassette when the lens lid is opened. 5. The microfilm camera according to claim 3, further comprising a stopper for blocking.