JP3411751B2 - Electronic development type camera - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera using a recording medium for electronically developing a subject image, and more particularly to an apparatus for movably supporting the recording medium.

[0002]

2. Description of the Related Art Conventionally, for example, in Japanese Patent Laid-Open No. 5-2280, there has been proposed a photographic material in which a recording medium itself is directly and electronically developed, and the developed visible image can be immediately obtained. In this specification, such a recording medium that is electronically developed is referred to as an electro-developing recording medium, and a camera using the electro-developing recording medium is referred to as an electro-developing camera.

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. It is possible to record R, G, and B images in the three recording areas respectively.

[0004]

In order to record an image on the electro-developing recording medium, it is necessary to apply a voltage. For example, in the case where the electro-developing recording medium is moved one screen at a time in order to record R, G and B images and the voltage is applied only to the recording area where the recording operation is performed, the electro-developing recording medium is It is necessary to move at high speed in a short time. Therefore, in the case where the electro-developing recording medium and the electrical contact are configured to be in sliding contact with each other, the coating of the electro-developing recording medium may be peeled off at the portion in sliding contact. On the other hand, when a flexible lead wire is used to connect the electro-developing recording medium and the power supply circuit, a space for accommodating the lead wire is required, which causes a problem that the camera body becomes large. .

The present invention is an electro-developing camera in which an electro-developing recording medium is movably provided, and there is no risk of peeling of the film of the electro-developing recording medium, and the electro-developing camera does not increase in size. Is intended to provide.

[0006]

A first electro-developing camera according to the present invention is a master plate fixed in a camera body, an electric circuit for controlling an electro-developing recording medium, and an electro-developing type camera. A recording medium holding member that can hold a recording medium and is movably provided, and a contact member that is provided on the recording medium holding member and that contacts the electro-developing recording medium with the electro-developing recording medium attached An electrode plate fixed to the recording medium holding member and electrically connected to the contact member, extending in the moving direction of the recording medium holding member, and fixed to the master plate and electrically connected to an electric circuit. And a brush capable of sliding contact with the electrode plate.

When the electro-developing recording medium has a plurality of recording areas for recording images, the contact members are provided by the number corresponding to the number of recording areas, and these contact members are used for recording. It is preferably arranged along the moving direction of the medium holding member.

The electrode plate preferably has a number of electrodes corresponding to the contact members.

The electrode plate may have an individual electrode surface that can be electrically connected to each recording area independently and a common electrode surface that can be electrically connected to each recording area in common.

For example, a pair of electrode plates are provided, and the pair of electrode plates are provided in parallel with each other.

A second electro-developing camera according to the present invention is
A master plate fixed in the camera body, an electric circuit for controlling the electro-developing recording medium, a movably provided recording-medium holding member capable of holding the electro-developing recording medium, and a recording medium. A contact member provided on the holding member and contacting the electro-developing recording medium in a state where the electro-developing recording medium is attached, and a recording medium holding member which is fixed to the master plate and electrically connected to an electric circuit. Is provided with an electrode plate extending along the moving direction of the recording medium, and a brush fixed to the recording medium holding member and electrically connected to the contact member so that the electrode plate can be slidably contacted.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION 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, and the still video camera is an electronic development type camera. FIG. 1 is a view of the camera body 100 as seen obliquely from above and front, and FIG. 2 is a view of the camera body 100 as seen from below and diagonally behind.

A lens mount 101 for mounting an interchangeable lens 300, which is a photographic optical system, is formed on the front surface of the camera body 100 at substantially the center thereof. Lens mount 10
A detachment button 102 that is pressed down when detaching the interchangeable lens 300 is provided on the side of 1, and a white balance adjustment window 103 is provided on the upper left side 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 unit 116 for displaying the operation mode of the camera and the like is provided on the rear side of the camera body 100 and on the side of the switch 111 and the like, and below the liquid crystal display unit 116 depends 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.

A taking optical system 301 which is an interchangeable lens 300.
In addition to a plurality of lens groups, a diaphragm 302 is provided. An electro-developing recording medium 200 is provided behind the photographing optical system 301, and a color filter 310 is provided in front of the electro-developing recording medium 200. A quick return mirror 320 is provided between the photographing optical system 301 and the color filter 310, and the quick return mirror 3
A shutter 321 is provided between the color filter 20 and the color filter 310. A prism 322 of a finder optical system is arranged above the quick return mirror 320. A loupe 323 of a finder optical system is provided at the rear of the electro-developing recording medium 200, and a light receiving element which is a photometric sensor 324 is provided near the loupe 323.

The electro-developing recording medium 200 has 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 including, 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 collimator 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 a direction perpendicular to the optical axis of the photographing optical system 301, that is, along 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.

During the photographing operation, the electro-developing recording medium 200 is moved at a high speed by the DC motor 351, and the color filter 310 is integrally moved in synchronism with the electro-developing recording medium 200 by a driving motor (not shown). As a result, the R filter element 3 is placed on the optical axis of the photographing optical system 301.
11 and the center of the first recording area 201, the G filter element 3
12 and the center of the second recording area 202, or the center of the B filter element 313 and the third recording area 203. During the reading operation for reading the image recorded on the electro-developing recording medium 200, the color filter 310 is positioned at a position retracted from between the first and third mirrors 342 and 344, for example, the shutter 321 side. In this state, the electro-developing recording medium 200 is moved by one horizontal scanning line at a low speed by the stepping motor 352, and each recording area 2
01, 202, and 203 denote the first and third mirrors 34.
It moves between 2, 344 in the direction perpendicular to the line connecting these mirrors 342, 344. At this time, the image on the electro-developing recording medium 200 is illuminated by the light source 340,
An image is formed 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.

A photo reflector 361 which is a transmittance sensor is provided behind the electro-developing recording medium 200. The photo reflector 361 has a light emitting element and a light receiving element. The light beam emitted from the light emitting element passes through the electro-developing recording medium 200, is reflected by a reflection coat (not shown), passes through the electro-developing recording medium 200 again, and is received by the light receiving element. The amount of light received by the light receiving element of the photo reflector 361 is input to the system control circuit 300, and the transmittance of the electro-developing recording medium 200 is obtained. Based on this transmittance, it is determined whether or not the electro-developing recording medium 200 has been recorded, and the value of the voltage to be applied in the recording operation is determined.

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 117 (see FIG. 2) for displaying various setting states of the still video camera.

FIG. 4 is a view showing the laminated structure of the electro-developing recording medium 200. The electro-developing recording medium 200 includes an electrostatic information recording medium 210 and a charge holding medium 211,
The electrostatic information recording medium 210 and the charge holding medium 211 are the power source 2
A voltage is applied by 12. Electrostatic information recording medium 21
0 is formed by stacking a glass substrate 213, an electrode layer 214, an inorganic oxide layer 215, and a photoconductive layer 216. The charge holding medium 211 has a memory type liquid crystal display element 221 formed by enclosing, for example, a smectic liquid crystal. The liquid crystal display element 221 is sandwiched between the intermediate layer 222 and the hard coat layer 223. The intermediate layer 222 is the liquid crystal display element 22.
1 and the photoconductive layer 216 are separated from each other, and the hard coat layer 223 is provided to protect the liquid crystal display element 221. A liquid crystal electrode layer 220 is laminated on the surface of the hard coat layer 223.

The power supply 212 is ON / OFF controlled by the recording medium drive circuit 333, and 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. In accordance with this charge, the liquid crystal display element 22
Since the strength of the electric field acting on 1 changes, the image is displayed on the liquid crystal display element 221 as a visible image, and the subject image is developed. The liquid crystal display element 221 is a memory type, and the developed visible image is retained even if the electric field is removed. The liquid crystal display element 221 can erase the developed visible image by heating it to a predetermined temperature using a heating device (not shown). In that case, the same recording medium can be repeatedly used. it can.

A reflective coat 224 is provided on the surface of the photoconductive layer 216 on the intermediate layer 222 side, and a photoreflector 361 is provided at a position facing the liquid crystal electrode layer 220. The photo reflector 361 has a light emitting element and a light receiving element which are arranged adjacent to each other, and a light beam emitted from the light emitting element is reflected by the reflection coat 224 and is received by the light receiving element. Thereby, the transmittance of the liquid crystal display element 221 is detected.

As described above, the electro-developing recording medium 200
Is a plurality of recording areas 201 to 2 for recording a subject image.
03, and the photo reflector 361 is arranged in the vicinity of each of the recording areas 201 to 203 so as to detect the transmittance of a portion deviating from these recording areas.
That is, the photoreflector 361 faces a portion outside the recording areas 201 to 203 in a state where the electro-developing recording medium 200 is fixed at a position for recording a subject image.

FIG. 5 is a view showing the structure of the recording medium holding member 401 to which the electro-developing recording medium 200 is attached, which is viewed from diagonally below the front of the electro-developing camera. The recording medium holding member 401 is a rectangular frame, and the pair of shafts 4
It is supported by 03 and 404 so that it can be raised and lowered. A fixing member 450 extending along the longitudinal direction is attached to the pair of vertical frames 401a of the recording medium holding member 401.
The fixing member 450 is a base portion 450 adhered to the vertical frame 401a.
a and a holding portion 450b connected to the base portion 450a and parallel to the vertical frame 401a. That is, a gap G is formed between the holding portion 450b and the vertical frame 401a, and the holding portion 4
The edge of 50b projects more toward the inside of the recording medium holding member 401 than the edge of the vertical frame 401a.

The electro-developing recording medium 200 has a rectangular frame 4
Both side portions 2 of the electro-developing recording medium 200 held by 53
Reference numeral 30 projects outward from the outer edge of the frame body 453.
Both sides 230 of the electro-developing recording medium 200 can be inserted into the gap G between the vertical frame 401a of the recording medium holding member 401 and the holding portion 450b, and the electro-developing recording medium 200 is inserted into the recording medium holding member 401. And is mounted from below in FIG. In this mounting operation, the locking member 451
Is pressed by the frame body 453 to bend, and when the frame body 453 crosses over the locking member 451, it is restored to the holding portion 450b side and engages with the lower end of the frame body 453. As a result, the electro-developing recording medium 200 and the frame 453 are fixed to the recording medium holding member 401.

FIG. 6 shows a structure for transferring the electro-developing recording medium 200, and is a view of the electro-developing camera as viewed from the rear. The imaging aperture AP has a shutter 321 (see FIG.
(See reference).

The electro-developing recording medium 200 is attached to the recording medium holding member 401. Recording medium holding member 4
Reference numeral 01 denotes an engagement member 4 movably supported by a pair of shafts 403 and 404 and fixed to a recording medium holding member 401.
07 is engaged with the thread groove of the transfer screw 405. The transfer screw 405 is rotatably supported about its axis by a bearing (not shown) provided at the upper end of the transfer screw 405 and a first support plate 411 fixed at the substantially central portion thereof. When the transfer screw 405 rotates, 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 at 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
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.
It meshes with 1. The final stage gear 432 of the reduction gear mechanism 430 can mesh with a gear 422 fixed to the output shaft of the DC motor 351 via a clutch 440. The clutch 440 includes an arm 441 that swings in accordance with the rotation direction of the gear 432, and a transmission gear 442 that is pivotally supported by the arm 441 and that can mesh with the gear 422 of the DC motor 351.

That is, when the gear 423 of the stepping motor 352 rotates in the forward direction, the clutch 440 enters the connected state, and when the gear 423 continues to rotate in the forward direction thereafter, the gear 422,
The transfer screw 405 rotates via 421, and the electro-developing recording medium 200 moves at a predetermined low speed. Further, at this time, the DC motor 351 is the stepping motor 352
It is rotationally driven with a predetermined torque in order to reduce the load of the. On the other hand, when the gear 423 of the stepping motor 351 rotates in the reverse direction, the clutch 440 is disengaged. DC in this state
When the motor 351 and the filter driving motor (not shown) rotate, the electro-developing recording medium 200 and the color filter 310 move at a predetermined high speed, and are transferred by one screen as described above. A recording operation is performed during this transfer operation, the first to third recording areas 201, 202, and 203 are arranged in the imaging aperture AP, and R, G, and B images are recorded. After this recording operation, in the reading operation, the electro-developing recording medium 200 is operated by the stepping motor 3
By 52, one horizontal scanning line segment is transferred at low speed,
The R, G, B images are read by the line sensor 346 (see FIG. 3).

FIGS. 7 to 9 are views showing the structure for electrically connecting the recording medium holding member 401 and the electro-developing recording medium 200. FIG. 8A shows a recording medium holding member 40.
1 and the electro-developing recording medium 200 as viewed from above, and FIG. 8B shows the surfaces of the electrode plates 491 and 492 facing the electro-developing recording medium 200. 9A is a view of the recording medium holding member 401 and the electro-developing recording medium 200 as seen from above, and FIG. 9B is an electrode plate 491, 4.
The surface 92 of the electro-developing recording medium 200 is shown on the opposite side. 10 and 11 show an electro-developing recording medium 20.
0, and FIG. 12 shows the layout of the circuit board and the like. The configurations of the recording medium holding member 401 and the electro-developing recording medium 200 will be described in more detail with reference to these drawings.

FIG. 7 is a front view of the recording medium holding member 401. The recording medium holding member 401 is a frame and has an opening 40 having a size corresponding to the electro-developing recording medium 200.
9 is formed. A light blocking plate 47 that can pass through the photo interrupter 470 is provided at the edge of the recording medium holding member 401.
1, 472 and 473 are provided. These light shielding plates 471 to 473 are provided for positioning the recording medium holding member 401, that is, the electro-developing recording medium 200, and the light shielding plates 471 to 473 are the photo interrupters 470.
When located inside, the first to third recording areas 201 to 20
3 is located at the imaging aperture AP, and a signal indicating the position of the electro-developing recording medium 200 is output from the photo interrupter 470 to the system control circuit 300 (see FIG. 3).

As shown in FIGS. 10 and 11, the electro-developing recording medium 200 has first to fourth electrode contacts 231.
˜234. First to third electrode contacts 231 to
233 is connected to the liquid crystal electrode layer 220 (see FIG. 4) provided for each of the first to third recording areas 201 to 203, and the fourth electrode contact 234 is connected to the electrode layer 214 (see FIG. 4).
Connection). The electrode layer 214 is a common electrode and is common to the recording areas 201 to 203.

As shown in FIG. 7, the recording medium holding member 401 is provided with first to fourth contact members 481 to 484, and the first to third contact members 481 to 483 hold the recording medium. Provided along one edge of the member 401,
The fourth contact member 484 is provided substantially at the center of the other edge of the recording medium holding member 401. When the electro-developing recording medium 200 is attached, the first to third contact members 481 to 483 are electrically connected to the first to third electrode contacts 231 to 233, respectively, and the fourth contact member. Four
84 electrically connects to the fourth electrode contact 234.

As shown in FIGS. 8 and 9, a pair of electrode plates 49 are provided on the rear surface of the recording medium holding member 401.
1, 492 are fixed. These electrode plates 491,
Reference numerals 492 are parallel to each other and extend along the moving direction of the recording medium holding member 401. First to third individual electrode surfaces 491a to 491c are formed on the surface of one electrode plate 491 on the side of the electro-developing recording medium 200, and the surface of the electrode plate 491 on the side opposite to the electro-developing recording medium 200. The first to
Third sliding contact surfaces 491d to 491f are formed. The first individual electrode surface 491a and the first sliding contact surface 491d, the second
The individual electrode surface 491b and the second sliding contact surface 491e, and the third individual electrode surface 491c and the third sliding contact surface 491f are electrically connected through through holes 491h. A common electrode surface 492a is formed on the surface of the other electrode plate 492 on the side of the electro-developing recording medium 200.
A common sliding contact surface 492b is formed on the surface opposite to the electro-developing recording medium 200. The common electrode surface 492a and the common sliding contact surface 492b are electrically connected to each other on a side surface (not shown) of the electrode plate 492.

As shown in FIG. 7, the first contact member 48
Reference numeral 1 denotes a first electrode contact 23 of the electro-developing recording medium 200.
1, a first contact part 481a capable of contacting the first contact part 1, a second contact part 481b capable of electrically contacting the first individual electrode surface 491a of the electrode plate 491, and first and second contact part parts 481a, 481a, 48
1b and the connection part 481c which electrically connects. The first contact portion 481 a is the opening 40 of the recording medium holding member 401.
9 is protruding.

Similarly, the second contact member 482 has a first contact portion 482a, a second contact portion 482b and a connecting portion 482c, and the first and second contact portions 482a and 482b are the electro-developing recording medium 200. Of the second electrode contact 232 and the first individual electrode surface 491b of the electrode plate 491, respectively. The third contact member 483 has a first contact portion 483.
a, a second contact portion 483b, and a connecting portion 483c. The first and second contact portions 483a and 483b are the third electrode contact 233 of the electro-developing recording medium 200 and the third individual electrode of the electrode plate 491. It is possible to contact the surface 491c, respectively. The fourth contact member 484 includes a first contact portion 484a and a second contact portion 484a.
It has a contact portion 484b and a connecting portion 484c, and the first and second contact portions 484a and 484b are the electro-developing recording medium 2.
00 of the fourth electrode contact 234 and the common electrode surface 492a of the electrode plate 492, respectively.

As shown in FIG. 12, the main plate 402 is a fixed frame and is provided in parallel with the shafts 403 and 404. Between the shafts 403 and 404 of the main plate 402, a circuit board 493 on which an electric circuit for controlling the recording operation of the electro-developing recording medium 200 is formed is attached. A photo reflector 361 is fixed to the upper end of the circuit board 493, and a pair of brushes 494 and 495 are provided to the lower end of the circuit board 493. The brushes 494 and 495 are electrically connected to an electric circuit, and the electrode plates 491 and 492 have first to third individual sliding contact surfaces 491d.
~ 491f and the common sliding contact surface 492b can be slid. A photo interrupter 470 is attached to a portion of the parent board 402 near the shaft 403.

The operation of this embodiment will be described. When the electro-developing recording medium 200 is in the initial position, the first recording area 201 and the R filter element 311 of the color filter 310.
And are located in the optical path of the photographing optical system 301. The quick return mirror 320 is in the down position, and the light beam that has passed through the photographing optical system 301 is the quick return mirror 320.
Is reflected at and is guided to the focusing plate 326. That is, the subject image is formed on the focusing plate 326. This subject image is observed through the condenser lens 327, the prism 322, the loupe 323, and the relay optical system 325.
At this time, the brushes 494 and 495 are in contact with the first individual sliding contact surface 491d and the common sliding contact surface 492b. Therefore, the voltage is applied to the first recording area 201.

When the release button 105 is pressed, the photographing operation is started, the quick return mirror 320 is set to the up position, the shutter 321 is opened, and the R image is recorded in the first recording area 201. Shutter 32
After 1 is closed, the electro-developing recording medium 200 and the color filter 310 rise, the second recording area 202 and the G filter element 312 are set in the optical path of the photographing optical system 301, and the brushes 494 and 495 are set to the first position. 2 individual sliding contact surface 491e
And a common sliding contact surface 492b. Therefore, the voltage is applied to the second recording area 202, and the shutter 321 is again activated.
Is released, the G image is displayed in the second recording area 20.
It is recorded in 2.

Similarly, after the shutter 321 is closed,
The third recording area 203 and the B filter element 313 are defined in the optical path of the photographing optical system 301, and the brushes 494, 49 are provided.
5 contacts the third individual sliding contact surface 491f and the common sliding contact surface 492b. Therefore, by applying a voltage to the third recording area 203 and opening the shutter 321 again,
The image of B is recorded in the third recording area 203.

When the shutter 321 is closed and the recording of the image of B is completed, the recording medium holding member 401 and the electro-developing recording medium 200 are lowered to the initial position, and the quick return mirror 320 is returned to the down position. As a result, the subject image can be observed again via the finder optical system.

As described above, the brush 49 is used in this embodiment.
4, 495 are not the electro-developing recording medium 200, but the electrode plates 491, 492 provided on the recording medium holding member 401.
It is configured to be in sliding contact with. Therefore, there is no possibility that the film of the electro-developing recording medium 200 will peel off. The electrode surfaces provided on the surfaces of the electrode plates 491 and 492 are formed by plating, for example, and the electro-developing recording medium 20
It has stronger abrasion resistance to the brushes 494 and 495 than the No. 0 coating. Therefore, stable electric performance is exhibited over a long period of use of the electro-developing camera. Further, the present embodiment does not require a space for accommodating the lead wire as compared with a configuration in which the electro-developing recording medium 200 and the electric circuit are connected by a flexible lead wire,
It is not necessary to upsize the electro-developing camera by this amount.

Contrary to the configuration of the above embodiment, the electrode plates 491 and 492 are provided on the parent plate 402 side, and the brush 494,
495 may be provided on the recording medium holding member 401 side.

[0055]

As described above, according to the present invention, the film of the electro-developing recording medium is not likely to be peeled off, and the electro-developing recording medium and the electric circuit can be provided without increasing the size of the electro-developing camera. It can be electrically connected.

[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 showing a configuration of an electro-developing recording medium.

FIG. 5 is an exploded perspective view of a recording medium holding member and an electro-developing recording medium.

FIG. 6 is a partial cross-sectional view showing a structure for transferring an electro-developing recording medium.

FIG. 7 is a diagram showing an arrangement of contact members in a recording medium holding member.

FIG. 8 is a diagram showing a state in which an electro-developing recording medium is attached to a recording medium holding member as viewed from above, and an electrode surface provided on a side of an electric substrate facing the electro-developing recording medium.

FIG. 9 is a view showing a state in which an electro-developing recording medium is attached to a recording-medium holding member as viewed from below, and an electrode surface provided on the side of the electric substrate opposite to the electro-developing recording medium.

FIG. 10 is a front view showing an electro-developing recording medium.

FIG. 11 is a side view showing an electro-developing recording medium.

FIG. 12 is a front view showing the arrangement of a circuit board and the like.

[Explanation of symbols]

200 Electro-developing recording medium 401 recording medium holding member 402 parent board 481 first contact member 482 Second contact member 483 Third contact member 484 Fourth contact member 491, 492 electrode plate 493 circuit board 494, 495 brush

Claims (6)

(57) [Claims] 1. An electro-development type camera using an electro-development type recording medium for electronically developing a subject image, wherein a master plate fixed in a camera body and the electro-development type recording medium are controlled. An electric circuit, a recording medium holding member capable of holding the electro-developing recording medium and movably provided, and a state provided with the recording medium holding member and having the electro-developing recording medium attached thereto. A contact member that contacts the electro-developing recording medium, an electrode plate that is fixed to the recording medium holding member and is electrically connected to the contact member, and that extends along the moving direction of the recording medium holding member,
An electro-developing camera, comprising: a brush fixed to the master plate, electrically connected to the electric circuit, and slidably contacting the electrode plate. 2. The electro-developing recording medium has a plurality of recording areas for recording an image, and the contact members are provided in a number corresponding to the number of the recording areas. The electro-developing camera according to claim 1, wherein the electro-developing camera is arranged along a moving direction of the recording medium holding member. 3. The electro-developing camera according to claim 2, wherein the electrode plate has a number of electrodes corresponding to the contact members. 4. The electrode plate comprises an individual electrode surface that can be electrically connected independently to each recording area, and a common electrode surface that can be electrically connected commonly to each recording area. The electro-developing camera according to claim 2. 5. The electro-developing camera according to claim 1, wherein a pair of the electrode plates are provided, and the pair of electrode plates are provided in parallel with each other. 6. An electro-developing camera using an electro-developing recording medium for electronically developing a subject image, wherein a master plate fixed in the camera body and the electro-developing recording medium are controlled. An electric circuit, a recording medium holding member capable of holding the electro-developing recording medium and movably provided, and a state provided with the recording medium holding member and having the electro-developing recording medium attached thereto. A contact member that contacts the electro-developing recording medium, an electrode plate that is fixed to the master plate and electrically connected to the electric circuit, and extends along the moving direction of the recording medium holding member, and the recording medium holding member. An electro-developing camera, comprising: a brush fixed to a member, electrically connected to the contact member, and capable of sliding contact with the electrode plate.