JPH09274248A - Light shielding device for electronic developing type recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent an electronic developing type recording medium from being unnecessarily exposed when an image is recorded by using in common of a light source for an aligning index with the light source of illumination light for reading out the image. SOLUTION: The electronic developing type recording medium 200 is freely moved in a vertical direction to the optical axis of a photographing optical system 301. The first recording area 201 of the medium 200 is positioned in the optical path of the optical system 301. When the image is recorded in the area 201, the second recording area 202 of the medium 200 is positioned between the first and third mirrors 342 and 344. One part of light emitted from the light source 340 is passed through the side part of the first mirror 342, reflected on the second mirror 343 and recorded near the area 201 as the aligning index. At this point, the light emitted from the light source 340 and reflected on the first mirror 342 is cut off by a light shielding plate and it does not arrive at the area 202.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording medium for electronically developing an image obtained by photographing, and more particularly to a device for shielding the recording medium during photographing operation.

[0002]

2. Description of the Related Art Hitherto, for example, Japanese Patent Application Laid-Open No. Hei 5-2280 has proposed a photographic material in which a recording medium itself is directly electronically developed and a developed visible image can be obtained immediately. Such an electronically developed recording medium is referred to as an electro-developing recording medium in this specification.

In front of the electro-developing recording medium, three filters of R (red), G (green) and B (blue) having a size of one screen are arranged, and the electro-developing recording medium is provided. By forming images of R, G, and B respectively in the three recording areas of 1 and synthesizing these images, 1
It is possible to reproduce one color image. In order to align the relative positions of the R, G, and B images when reproducing such a color image, it is preferable to record the alignment index together with the image in the vicinity of each recording area during shooting.

[0004]

On the other hand, in order to read out R, G and B images from the electro-developing recording medium during reproduction, it is necessary to illuminate the recording area, and the light source for this illumination is described above. It is conceivable to make it common with the light source for forming the above-mentioned alignment index. However, if the light source is used in common, a part of the electro-developing recording medium is exposed to the illumination light during the image recording operation, and an image of the illumination light may be formed on the exposed portion.

The present invention solves such a problem, and in a configuration in which a light source for an alignment index and a light source of illumination light for reading an image are used in common,
It is an object of the present invention to provide an apparatus for preventing unnecessary exposure of an electro-developing recording medium during an image recording operation.

[0006]

A light-shielding device for an electro-developing recording medium according to the present invention has first and second recording areas, and an electro-developing recording medium for electronically developing and recording an image. A light-shielding device having a light source, and when a recording operation of an image is performed on the first and second recording areas, an alignment index relating to the image is optically provided in the vicinity of the first and second recording areas. Image forming means for irradiating the recording areas to read the images recorded in the first and second recording areas, and a recording operation. When is done,
It is characterized in that it is provided with a light shielding plate which blocks the irradiation of the illumination light to the electro-developing recording medium.

It is preferable that the light-shielding plate is configured to block the irradiation of the illumination light to the second recording area when the recording operation is performed on the first recording area.

The light-shielding device may include recording medium transfer means for transferring the electro-developing recording medium along the direction in which the first and second recording areas are arranged. In this case, in the light shielding plate, the electro-developing recording medium is arranged by the recording medium transferring means from the first position where the first recording area is arranged in the optical path of the photographing optical system to the second recording area is arranged in the optical path. It is configured to block the illumination light when it can be transferred to the position 2.

The recording medium transporting means transports the electro-developing recording medium for reading the image recorded in the first or second recording area, and the driving force of the driving source for the electro-developing recording medium. And a clutch for transmitting the light to the light shielding plate. In this case, the light shielding plate is configured to block the illumination light when the clutch is in the disengaged state.

The clutch may include an arm fixed to the rotation shaft of the final stage gear of the reduction gear mechanism connected to the drive source. In this case, the clutch is provided via a transmission member which is rotated by being pressed by the arm. The light shielding plate is displaced.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 are external views of a still video camera to which an embodiment of the present invention is applied. FIG. 1 is a view of the camera body 100 as seen from diagonally above and front, and FIG. 2 is a view of the camera body 100 as seen from diagonally below and rearward.

A lens mount 101 for mounting an interchangeable lens, which is a photographic optical system, is formed substantially in the center of the front surface of the camera body 100. A removal button 102 that is pressed down when the interchangeable lens is removed is provided on the side of the lens mount 101, and a white balance adjustment window 103 is provided on the upper left of the lens mount 101. A strobe shoe 104 for mounting a strobe is provided substantially in the center of the upper surface of the camera body 100, and a release button 105 is provided on the side of the strobe shoe 104. A communication connector 106 for transmitting image data to an external computer or the like is provided on the side surface of the camera body 100.

A finder 110 is provided above the rear surface of the camera body 100. Below the finder 110, the mode setting switch 111 and the drive switch 11
2, an AV / TV switch 113, an EF switch 114, and a white balance switch 115 are provided. The mode setting switch 111 is a switch for setting the shooting mode of the still video camera, and the drive switch 112 is a switch for activating a self-timer, for example. The AV / TV switch 113 is used when selecting either the aperture priority mode or the shutter speed priority mode, and the EF switch 114 is used when correcting the Ev value. The white balance switch 115 is for performing white balance adjustment.

A liquid crystal display section 116 for displaying the operation mode of the camera and the like is provided on the back side of the camera body 100 on the side of the switch 111 and the like, and below the liquid crystal display section 116 is different depending on the operation mode of the camera. A mode indicator 117 that lights up in color and a scan start button 118 that is pressed in a scan mode for reading an image recorded on a recording medium are provided. A power switch 119 is provided below the scan start button 118. By operating the power switch 119,
The power is turned on and off, and the operation mode of the camera is switched between the shooting mode and the scan mode.

A slot 120 for mounting the electro-developing recording medium 200 is formed on the lower surface of the camera body 100, and the electro-developing recording medium 200 is inserted into the slot 120.
A dial 121 for moving the inside is provided. Next to the dial 121, an eject button 122 for ejecting the electro-developing recording medium 200 from the slot 120 is provided. Also, the camera body 10
The bottom surface of 0 is a screw hole 12 for fixing it to a tripod.
3 is formed and a lid 12 for opening and closing the battery storage portion
4 are provided.

FIG. 3 is a block diagram of a still video camera. The system control circuit 300 is a microcomputer and controls the entire still video camera.

The photographic optical system 301 is provided with a diaphragm 302 in addition to a plurality of lens groups. An electro-developing recording medium 200 is arranged behind the photographing optical system 301, and a color filter 310 is provided in front of the electro-developing recording medium 200.
Is provided. A quick return mirror 320 is provided between the photographing optical system 301 and the color filter 310, and the quick return mirror 320 and the color filter 3 are provided.
A shutter 321 is provided between 10. A finder optical system prism 322 is provided above the quick return mirror 320, and a finder optical system loupe 323 is provided behind the prism 322 and the electro-developing recording medium 200. A light receiving element, which is a photometric sensor 324, is provided near the loupe 323.

The electro-developing recording medium 200 includes first to third recording areas 201, 202 and 203, and each recording area 2
01, 202, and 203 each have a size of one screen. The color filter 310 includes an R (red) filter element 311 and a G (green) filter element 312 and B.
(Blue) filter element 313, and each filter element 311, 312, 313 has a recording area 201, 20
It has the same size as 2, 203, that is, the size of one screen.

The quick return mirror 320 and the shutter 321 are driven by a mirror drive circuit 330 and a shutter drive circuit 331, respectively, and these circuits 330 and 331 are controlled by an exposure control circuit 332. The exposure control circuit 332 is the system control circuit 3
It operates according to the command signal output from 00. That is, the quick return mirror 320 is normally set to the down position (inclined state shown by the solid line) which is a position for observing a subject, and guides the light passing through the photographing optical system 301 to the finder optical system 322. During the shooting operation, the mirror drive circuit 330 rotates the lens under the control of the exposure control circuit 332 to set it in the up position (horizontal state indicated by the broken line). Shutter 32
1 is normally closed, but during the shooting operation, the exposure control circuit 3
Under the control of 32, the shutter drive circuit 331 releases the light for a predetermined time, whereby the light passing through the photographing optical system 301 is applied to the light receiving surface of the electro-developing recording medium 200.

A voltage (that is, a recording medium activation signal) is applied to the electro-developing recording medium 200 under the control of the recording medium driving circuit 333, and the electro-developing recording medium 200 is exposed during the voltage application. , The image formed by the photographing optical system 301 is developed as a visible image. The recording medium drive circuit 333 operates according to a command signal output from the system control circuit 300.

At a position below the shutter 321 and in front of the color filter 310 and the electro-developing recording medium 200, a light source 340 composed of, for example, a light emitting element (LED).
And collimator lens 341 and first and second mirrors 3
42 and 343 are provided, and a third filter is provided at a position behind the color filter 310 and the electro-developing recording medium 200.
The mirror 344, the scanner optical system 345, and the line sensor 346 are provided. The line sensor 346 is, for example, a 2000-pixel CCD one-dimensional sensor.

The light emitted from the light source 340 passes through the collimating lens 341, is passed through the side of the first mirror 342 and is guided to the second mirror 343, where it is reflected and guided to the electro-developing recording medium 200. Get burned. Further, the light emitted from the light source 340 is emitted from the first mirror 342 and the third mirror 34.
4 and is guided to the line sensor 346 through the scanner optical system 345. During the recording operation, the light reflected by the second mirror 343 causes the first to third recording areas 201, 202, 20 of the electro-developing recording medium 200.
A registration index indicating the relative positional relationship between the images recorded in the respective recording areas 201, 202, 203 is optically formed in the vicinity of 3. In addition, the recording areas 201, 202, 2
When the image recorded on the display unit 03 is read, the light source 340
The illumination light emitted from the first and third mirrors 34
The light is reflected at 2, 344, irradiated to the recording area, transmitted through the recording area, and guided to the line sensor 346. That is, the light source 340 is used during the recording operation and the reading operation.

The color filter 310 and the electro-developing recording medium 200 are movable along the direction perpendicular to the optical axis of the photographing optical system 301, that is, the direction in which the first to third recording areas 201, 202 and 203 are arranged. . Color filter 310
Is controlled by the filter moving circuit 350. The electro-developing recording medium 200 is transferred by a DC motor 351 or a stepping motor 352, and these motors 351 and 352 are controlled by a recording medium moving circuit 353.

At the time of photographing operation, the electro-developing recording medium 200 is transferred at a high speed by the DC motor 351, and the color filter 310 is transferred integrally with the electro-developing recording medium 200. As a result, on the optical axis of the photographing optical system 301,
The center of the R filter element 311 and the first recording area 201,
The center of the G filter element 312 and the second recording area 202,
Alternatively, the B filter element 313 and the third recording area 203
The center of is placed. At the time of a reading operation for reading an image recorded on the electro-developing recording medium 200, the color filter 31
0 is positioned at a position retracted from between the first and third mirrors 342 and 344, for example, on the shutter 321 side. In this state, the electro-developing recording medium 200 is moved at a low speed by one horizontal scanning line by the stepping motor 352, and the recording areas 201, 202 and 203 are moved between the first and third mirrors 342 and 344. Mirror 3
It moves in the direction perpendicular to the line connecting 42 and 344. At this time, the image on the electro-developing recording medium 200 is illuminated by the light source 340 and imaged on the light receiving surface of the line sensor 346.

On / off control of the light source 340 is performed by the system control circuit 300, and the line sensor 346.
Of the pixel signal generated in the recording medium moving circuit 35
The control of No. 3 is performed by the recording medium reading circuit 354. These circuits 353 and 354 are controlled by the system control circuit 300.

The pixel signal read from the line sensor 346 is amplified by the amplifier 355, and the A / D converter 3
It is converted into a digital signal by 56. Under the control of the system control circuit 300, the digital pixel signal is subjected to processing such as shading correction and gamma correction in the image processing circuit 357. Then, this pixel signal is input from the image processing circuit 357 to the interface circuit 358 and subjected to predetermined processing such as format conversion and the like, and an external computer (not shown) or the like via the communication connector 106 (see FIG. 2). Can be output to. The interface circuit 358 and the image processing device 357 operate according to a command signal from the system control circuit 300.

An operation section 360 including switches such as a release button 105 provided on the camera body 100 is connected to the system control circuit 300. According to the operation of the operation unit 360, a shooting operation, an image signal reading operation, and the like are performed. The system control circuit 300 is also connected to a liquid crystal display unit 116 (see FIG. 2) for displaying various setting states of the still video camera.

FIG. 4 is a diagram showing the structure of the electro-developing recording medium 200, which is basically the same as that disclosed in Japanese Patent Laid-Open No. 5-2280. That is, the electro-developing recording medium 200 includes an electrostatic information recording medium 210 and a charge holding medium 211, and a voltage is applied to the electrostatic information recording medium 210 and the charge holding medium 211 by a power supply 212. The electrostatic information recording medium 210 includes a substrate 213 and an electrode layer 2
14, the inorganic oxide layer 215 and the photoconductive layer 216 are laminated, and the photoconductive layer 216 is formed by polymerizing the charge generation layer 217 and the charge transport layer 218. Charge holding medium 21
1 is configured by enclosing a liquid crystal 221 between a liquid crystal support 219 and a liquid crystal electrode layer 220. Electrostatic information recording medium 210
The charge transport layer 218 and the liquid crystal support 219 of the charge holding medium 211 face each other with a minute gap.

The power supply 212 is on / off controlled by the recording medium drive circuit 333. When the power supply 212 is in the on state, a voltage is applied between the electrode layer 214 and the liquid crystal electrode layer 220, that is, the electrostatic information recording medium 210 and the charge holding medium 211. Is applied. When the electrostatic information recording medium 210 is exposed in this voltage applied state, the electrostatic information recording medium 210 generates electric charges according to the image. Since the strength of the electric field acting on the liquid crystal 221 changes according to this charge, the image is displayed on the liquid crystal 221 as a visible image, and the subject image is developed.
The charge holding medium 211 is, for example, a memory type liquid crystal display element in which a smectic liquid crystal is sealed, and the developed visible image is held even if the electric field is removed. This liquid crystal display element can erase a developed visible image by heating to a predetermined temperature using a heating device (not shown), and in that case, the same recording medium can be used repeatedly. .

FIGS. 6 to 8 show an electro-developing recording medium 200.
1 shows a configuration for transferring the. In these figures, the electro-developing recording medium 200 and the color filter 3 are shown.
10 is omitted.

The recording medium holding member 401 is movably supported by a pair of shafts 403 and 404 provided in parallel with a parent plate 402, and an electro-developing recording medium (not shown) is held in the recording medium holding member 401. Can be attached. Parent board 4
On the side opposite to the shaft 404 of 02, the shaft 404
A transfer screw 405 extending parallel to the transfer screw 405 is provided, and an opening 406 is formed in the main plate 402 at a portion corresponding to the transfer screw 405. The engagement member 407 fixed to the recording medium holding member 401 projects from the opening 406 and engages with the thread groove of the transfer screw 405. The transfer screw 405 includes a support member 408 provided on an upper end portion of the main plate 402 and a first member fixed to a substantially central portion of the main plate 402.
The support plate 411 of FIG. By rotating the transfer screw 405,
The recording medium holding member 401 moves up and down along the shafts 403 and 404 via the engaging member 407.

A transfer gear 421 is provided on the protruding portion of the transfer screw 405 from the support plate 411. First
Second support plate 412 provided in parallel with the support plate 411 of the
A DC motor 351 is attached to the lower surface of the DC motor 351. The gear 422 fitted to the output shaft of the DC motor 351 is located above the second support plate 412 and meshes with the transfer gear 421. Therefore, when the DC motor 351 is driven, the gears 421 and 422 and the transfer screw 405 rotate, and the recording medium holding member 401 moves up and down. That is, the DC motor 3
51, the electro-developing recording medium 200 for one screen, that is, the recording areas 201, 202, 203 in FIG.
Is transferred by the vertical length of.

A stepping motor 352 is fixed to the upper surface of the first support plate 411, and the first and second support plates 4 are connected to each other.
A reduction gear mechanism 430 is provided between 11, 412. The output shaft of the stepping motor 352 penetrates the first support plate 411 and projects downward, and the gear 423 fitted to the tip of the output shaft is the gear 43 of the reduction gear mechanism 430.
1 is engaged. The gear 432 at the final stage of the reduction gear mechanism 430 is fitted to the rotary shaft 441 of the clutch 440 via a friction member and is rotatable relative to the rotary shaft 441. The clutch 440 is attached to the support plates 411 and 412 by the rotary shaft 4
41 includes an arm 442 swingably supported via 41, and a transmission gear 443 pivotally supported by the arm 442. The transmission gear 443 meshes with a gear 432 of the reduction gear mechanism 430, and the DC motor 351's Gear 4 fixed to the output shaft
It is possible to mesh with 22.

That is, in FIG. 7, when the gear 423 of the stepping motor 352 rotates in the counterclockwise direction (direction of arrow A), the gear 432 and the arm 442 also rotate in the counterclockwise direction, and the transmission gear 443 becomes the gear 422 of the DC motor 351. When engaged, the clutch 440 is in the connected state. After that, when the gear 423 of the stepping motor 352 continues to rotate counterclockwise, the transmission gear 443 rotates clockwise via the gear 432, and the transfer screw 405 rotates via the gears 422 and 421. At this time, the DC motor 351 is also rotationally driven with a predetermined torque. On the other hand, when the gear 423 of the stepping motor 351 rotates clockwise, the arm 442 also rotates clockwise, and as shown in FIG. 8, the transmission gear 443 is released from the gear 422 of the DC motor 351 and the clutch 440 is in the disengaged state. Become.

As described above, the electro-developing recording medium 200 is moved by one horizontal scanning line by the stepping motor 352, and while the stepping motor 352 is stopped, the images recorded in the recording areas 201, 202 and 203 are recorded. Are read by the line sensor 346. When the rotational driving force of the stepping motor 352 is transmitted to the electro-developing recording medium 200 via the clutch 440, D
When the C motor 351 is rotationally driven, the load due to the intervention of the DC motor 351 is reduced.

An opening 409 through which the illumination light emitted from the light source 340 can pass is formed in a portion of the parent plate 402 facing the first mirror 342.
A light-shielding plate 501 can face 9. When the light shielding plate 501 does not face the opening 409, that is, the opening 409
When is open, the illumination light emitted from the light source 340 is guided to the line sensor 346 via the third mirror 344 and the scanner optical system 345. On the other hand, when the light blocking plate 501 faces the opening 409, the illumination light is blocked by the light blocking plate 501 and is not guided to the line sensor 346. The configurations of the light shielding plate 501 and the members around it will be described with reference to FIGS.

The light shielding plate 501 is a recording medium holding member 401.
Faces the surface opposite to the parent plate 402. Light shield 5
01 is integrally fixed to one end 503 of the support pin 502 rotatably attached to the main plate 402.
02 swings by rotating about the axis, and the opening 4
09, or the opening 409 is opened.

The other end 504 of the support pin 502 is the main plate 402.
The claw member 505 is integrally fixed to the other end 504 of the first support plate 411 so as to project therefrom. The claw member 505 is a pair of locking claws 506 and 507 formed by cutting out a fan-shaped plate, and the locking claws 506 and 5.
And a connecting portion 508 that is bent and formed on the opposite side of 07. The locking claws 506 and 507 can be locked to a stopper 510 fixed to the main plate 402, and by this locking,
The range in which the claw member 505 swings is restricted. Connecting part 50
8 is always engaged in the groove portion 513 of the transmission member 512 which is rotatably supported by the main plate 402 via the support pin 511. The leg portion 514 formed on the opposite side of the groove 513 of the transmission member 512 protrudes below the support plate 411 through the notch 413 formed in the first support plate 411.
The coil spring 515 wound around the support pin 511 constantly urges the arm 442 of the clutch 440 in a direction approaching the arm 442.

As shown in FIG. 10, the arm 442 of the clutch 440 rotates in the direction of arrow C, and the transmission gear 443 becomes DC.
When meshing with the gear 422 of the motor 351, the leg 514 of the transmission member 512 is pressed by the arm 442, and the transmission member 512 rotates in the direction of arrow D against the elastic force of the spring 515. Therefore, the claw member 505 is indicated by the arrow E.
The light shielding plate 501 rotates in the (F) direction, and rotates in the arrow G direction. The claw member 505 and the light blocking plate 501 stop at the position where the locking claw 507 is locked by the stopper 510, and in this state, the light blocking plate 501 opens the opening 409 as shown by the chain double-dashed line in FIG.

On the other hand, as shown in FIG. 11, when the arm 442 of the clutch 440 rotates in the direction of arrow H and the transmission gear 443 is released from the gear 422 of the DC motor 351, the leg portion 514 of the transmission member 512 is released. Is displaced to the arm 442 side by the spring 515, but the locking claw 506 is locked to the stopper 510. Therefore, the claw member 505 and the light blocking plate 501 stop at this position, and in this state, the light blocking plate 5
01 indicates the opening 40 as indicated by the broken line in FIG.
Face 9

Next, the operation of the present embodiment will be described. During the shooting or recording operation, the clutch 440 is set to the disengaged state, and the light shielding plate 501 faces the opening 409. Therefore, the light emitted from the light source 340 and reflected by the second mirror 343 is guided to the electro-developing recording medium 200, but the light reflected by the first mirror 342 is blocked by the light shielding plate 501 and the electro-developing recording is performed. It is not guided to the medium 200. At the beginning of the recording operation, the electro-developing recording medium 200 and the color filter 310 are set below the position shown in FIG. 3, and the center of the R filter element 311 and the first recording area 201 is the optical axis of the photographing optical system 301. Located above, the G filter element 312 and the second recording area 202 are located between the second and third mirrors 342, 344.

When the release button 105 is pressed in this state to take an image, the image of R is first recorded in the first recording area 201. Then, the DC motor 351 is driven to transfer the electro-developing recording medium 200 and the color filter 310 by one screen. This allows the G filter element 3
12 and the second recording area 202 are defined on the optical path of the photographing optical system 301, and the G image is recorded in the second recording area 202. The DC motor 351 is driven again to transfer the electro-developing recording medium 200 and the color filter 310 by one screen, and the B filter element 313 and the third recording area 20.
3 is set on the optical path of the photographing optical system 301, and the image of B is recorded in the third recording area 203.

When the recording operation is performed in this way,
The light shielding plate 501 faces the opening 409, and during the recording operation on the first recording area 201, the second recording area 2
The irradiation of the illumination light to 02 is blocked. Similarly,
During the recording operation for the second recording area 202, the irradiation of the illumination light to the third recording area 203 is blocked. In other words, the light shielding plate 501 is the electro-developing recording medium 2
00 is transferable from a first position where the first recording area 201 is arranged in the optical path of the photographing optical system 301 to a second position where the second recording area 202 is arranged in the optical path of the photographing optical system 301. When in the state, the illumination light is blocked. Therefore, during the image recording operation, a part of the electro-developing recording medium 200 is not exposed by the illumination light.

On the other hand, when the image recorded on the electro-developing recording medium 200 is read by the line sensor 346,
First, the color filter 310 is retracted to a position out of the optical path of the photographing optical system 301, the stepping motor 352 is rotated, and the clutch 440 is set to the connected state. With the switching operation of the clutch 440, the light shielding plate 501 swings, the opening 409 is opened, and the electro-developing recording medium 2 is opened.
00 is illuminated by the illumination light emitted from the light source 340.

Then, the stepping motor 352 and the DC motor 351 are driven so that the transfer screw 405 rotates at the same speed, and the image recorded in the first recording area 301 is scanned. That is, the first recording area 301 is moved by one horizontal scanning line segment and stopped, and the image in the recording area 301 is displayed while the line sensor 3 is being stopped.
Detected by 46. Next, the electro-developing recording medium 20
While 0 is transferred by one horizontal scanning line, the image signal of one horizontal scanning line is output from the line sensor 346. The transfer of the electro-developing recording medium 200 and the output of the image signal from the line sensor 346 are repeated, and the image signal of the first recording medium 301 is read via the line sensor 346.

When the reading of the image signal from the first recording medium 301 is completed, the stepping motor 352 and the DC motor 351 are temporarily stopped and then rotated by a predetermined amount so that the end portion of the second recording area 302 is line sensor 346. Is set to the position corresponding to. Then, in the same manner as the operation of reading the image signal of the first recording area 301, the second recording area 3
The image recorded in 02 is scanned, and then the image recorded in the third recording area 303 is scanned.

The operation of switching the position of the light shielding plate 501 does not necessarily need to be linked to the operation of the stepping motor 352 or the clutch 440, and is not limited as long as it is related to the image recording operation and the image reading operation.

[0048]

As described above, according to the present invention, in the structure in which the light source for the alignment index and the light source of the illumination light for reading the image are commonly used, the electro-developing recording is performed during the image recording operation. Unnecessary exposure of the medium is prevented.

[Brief description of drawings]

FIG. 1 is a perspective view of a still video camera to which an embodiment of the present invention is applied as seen from the front.

FIG. 2 is a perspective view of the still video camera of FIG. 1 as viewed from the rear.

3 is a block diagram showing a circuit configuration of the still video camera of FIG. 1. FIG.

FIG. 4 is a diagram illustrating a configuration of an electro-developing recording medium.

FIG. 5 is a partial cross-sectional view showing a state in which a mechanism for transferring a recording medium holding member is viewed from the front.

FIG. 6 is a partial cross-sectional view showing a state in which a mechanism for transferring a recording medium holding member is viewed from a side surface.

FIG. 7 is a view of the mechanism for transferring the recording medium holding member as viewed from above, in which the clutch is in a connected state.

FIG. 8 is a view of the mechanism for moving the recording medium holding member as viewed from above, in which the clutch is in the disengaged state.

FIG. 9 is an enlarged sectional view showing a reduction gear mechanism and a mechanism for swinging a light shielding plate.

FIG. 10 is a perspective view showing a state where the light shielding plate has an opening opened.

FIG. 11 is a perspective view showing a state where the light shielding plate faces the opening.

[Explanation of symbols]

 200 Electro-Development Type Recording Medium 201 First Recording Area 202 Second Recording Area 340 Light Source 342 First Mirror 343 Second Mirror 344 Third Mirror 346 Line Sensor 501 Light Shading Plate

Claims (5)

[Claims] 1. A light-shielding device for an electro-developing recording medium having first and second recording areas, for electronically developing and recording an image, comprising: a light source; A registration index forming means for optically forming a registration index for the image in the vicinity of the first and second recording areas when an image recording operation is performed on the recording area, and the light source, Image illuminating means for irradiating the recording areas with illumination light to read out the images recorded in the first and second recording areas; and the electronic development of the illumination light when the recording operation is performed. And a light-shielding plate for shielding the recording medium from being irradiated. A light-shielding device for an electro-developing recording medium, comprising: 2. The light shielding plate allows the illumination light to emit the second light when a recording operation is performed on the first recording area.
2. The light shielding device for an electro-developing recording medium according to claim 1, wherein the irradiation of the recording area is blocked. 3. A recording medium transfer means for transferring the electro-developing recording medium along a direction in which the first and second recording areas are arranged, wherein the light-shielding plate is the electro-developing recording medium. The medium transfer means is in a state in which the first recording area can be transferred from the first position where the first recording area is arranged in the optical path of the photographing optical system to the second position where the second recording area is arranged in the optical path. The light shielding device for an electro-developing recording medium according to claim 1, wherein the illumination light is blocked. 4. A driving source for moving the electro-developing recording medium for reading the image recorded in the first or second recording area, and a driving force of the driving source, the recording medium transporting means. The electro-developing recording apparatus according to claim 3, further comprising a clutch for transmitting the electro-developing recording medium, wherein the light blocking plate blocks the illumination light when the clutch is in a disengaged state. Medium shading device. 5. The clutch includes an arm fixed to a rotary shaft of a final stage gear of a reduction gear mechanism connected to the drive source, and the clutch is provided via a transmission member that is rotated by being pressed by the arm. The shading device for an electro-developing recording medium according to claim 4, wherein the shading plate is displaced.