JPH07281276A - Camera - Google Patents

Abstract

PURPOSE:To continue photographing even when a safety device works to stop a photographing function because of fault in magnetic recording by providing a control means stopping the photographing function of a camera at the time of detecting the abnormality of a magnetic information recording means and a reproducing means and a means for manually cancelling the stop of the function. CONSTITUTION:A CPU 500 controlling the respective circuits of this camera is provided with a magnetic information recording circuit 562 recording magnetic information and a reproducing circuit 561. In the case the magnetic record at the leading edge of the film is not read at the time of automatic loading, a flag for expressing that the magnetic recording is impossible is set and the warning display of the fault in the magnetic recording is performed by a display circuit 514. At the same time, the control means stopping the photographing function works. The camera is provided with a magnetic recording cancelling switch SMC cancelling the stop of the photographing function in the case a user wants to perform photographing even when the magnetic recording is impossible independently of a camera operation means.

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 film cartridge having a film coated with a recordable magnetic layer and having a recording means and a reproducing means for recording magnetic information on the magnetic layer.

[0002]

2. Description of the Related Art In recent years, there has been proposed a camera for recording / reproducing bar code information on a bar code disk, various film information by magnetic information on the film magnetic layer, and photographing information by using a film coated with a magnetic layer.

The above-mentioned camera has been proposed as a camera having many functions particularly for recording / reproducing magnetic information to / from a film magnetic layer.

[0004]

However, the camera is
Recording by magnetic information on the magnetic layer coated on photographic film
Although it is designed for reproduction, since the film coated with the magnetic layer passes through a narrow gap between the magnetic head and the wall surface facing the magnetic head, the running speed of the film is affected by the frictional resistance of the film to the magnetic head and the wall surface. Unevenness is likely to occur. In particular, when the battery of the film winding motor is exhausted, this speed unevenness increases, and when the speed unevenness increases, recording / reproducing errors with respect to the magnetic layer also easily occur. Under such circumstances, when the information recorded on the magnetic layer of the film cannot be reproduced well, of course the information cannot be recorded well. In such a case, the safety function of the camera prevents the shooting from continuing. Is working. However, even if the means for recording / reproducing magnetic information breaks down in consideration of the photographer's dissatisfaction that such a safety function misses the opportunity to take a picture, there is a suggestion that photography with specifications other than that is possible. Has been done.

[0005] For example, according to Japanese Patent Laid-Open No. 5-34792, when a photographer takes a picture despite recording / reproducing by magnetic information being a failure, the camera warns that the failure has occurred. If the person turns on the release switch, the film is set to the first frame, and the following photographing can be performed. However, in this case, there is a concern that the photographer may overlook the failure warning and start shooting.

The present invention has been made to solve the above problems. That is, a camera that allows the photographer to continue shooting even if the safety function is activated and the shooting is stopped without overlooking that the recording / playback function of the magnetic information on the film magnetic layer is defective. It is intended to be provided.

[0007]

The object is to provide a camera having magnetic information recording means and / or reproducing means for recording and / or reproducing various kinds of information on a magnetic layer coated on a film. Abnormality detection means for detecting an abnormality of the reproduction means, control means for stopping the photographing function of the camera when the abnormality detection means detects an abnormality, warning means for warning the photographer of the abnormality, and the control means Is achieved by a camera having stop release means provided independently of other camera operation means for the photographer to release the shooting function of the stopped camera. .

[0008]

EXAMPLE An example of the present invention will be described with reference to FIGS.
The details will be described.

First, a film and a cartridge used in the present invention will be described with reference to FIGS.

FIG. 1 is a front view of the film pulled out from the cartridge. In the figure, two perforations Fb and Fc are provided for one frame of the photographic screen Fa at one end of the film F.
Has no perforations. At the other end of the film F, two magnetic tracks Fe coated with a magnetic layer are provided for each frame of the photographing screen, and the color temperature of the light source,
Subject brightness, exposure time, aperture value, back light, flash light, continuous shooting, camera type, owner I
Shooting information such as D, trimming information, shooting date, photographer's memo, and shooting completed information is recorded by a recording head provided in the camera and used as information at the time of print processing after film development. A magnetic track Ff is also provided on the other end of the tongue end Fd of the film F. The magnetic track Ff is manufactured at the time of manufacture, and the manufacturer name, film type, emulsion lot, sensitivity, number of frames, and latitude. Film information such as the date of manufacture is recorded, and the information is reproduced by the reproducing head provided in the camera, and each function of the camera is automatically set according to the film used. However, the magnetic track Ff may not only be reproduced but may also record shooting information, so that there is a margin for recording on the magnetic track Ff.

When the shooting area on the film is used to the maximum, the screen size is a high-definition size which is slightly longer than the conventional screen size with an aspect ratio of 2: 3. By trimming the edges, a normal size with an aspect ratio of 2: 3 is formed, and by trimming the upper and lower edges, a panoramic size with a horizontally long screen is formed rather than the high definition size.

The film F is stored in the cartridge C including the tongue end portion when not in use and after use.
Further, in order to reliably send out the tongue end portion Fd of the film F from the cartridge C, the film base is provided with TA.
PEN (polyethylene naphthalate), which can be formed thinner than C, PET, and has high tensile strength, is used.

Further, as will be described later, the cartridge C is provided with a usage status display window for displaying the usage status of the film.

FIG. 2 is a plan view of the cartridge C.
A bar code disk 1 is built in at the end of the space in which the film F in the cartridge C is stored, and is integrally rotatably assembled together with the spool 2. FIG. 3 is a diagram of a bar code disc. The bar code on the bar code disk 1 has film information corresponding to the conventional DX code such as film sensitivity and the number of frames to be photographed.
It is divided into 24 areas in 15 degree increments, and a reference position that indicates the start of information when black appears in four consecutive black and white patterns. If the same color is two consecutive blocks, "1", only one block. If so, the information is written according to a rule such as "0", the film sensitivity is 5 bits, the number of frames taken is 3 bits, and the latitude is 2 bits.
A total of 10 bits of information is shown. If the standards of film, camera, etc. are unified, one block of barcode will
It may have an area other than 24 at an angle other than 15 degrees, and the law of information recording may be a law other than the above.

The rotating bar code disk 1 is a bar code window 3
When reading the film information, a photoelectric element such as a photo reflector provided on the main body side facing the window 3 for the bar code when reading the film information is used to rotate the spool 2 photoelectrically. To read. Further, when the use state of the film is displayed through the use state display windows 4 and 5, and when the cam having the long radius and the cam having the short radius are visible as shown in FIG. 2, the film is loaded into the camera and then all frames are photographed. 4A shows a partial use when it is rewound in the middle before, and when both of the long radius cams are visible as shown in FIG. 4A, the film is in an unused state.
When both cams with a short radius are visible as in (B), it means that the film has been used, that is, has been photographed. The spool 2 has convex portions 2a and 2b and concave portions 2c and 2d, and a spool shaft on the camera side, which will be described separately, fits therein.

Since unused or used film F may leak light from the film draw-out port of the cartridge C, a rotary shutter (not shown) is provided at the film draw-out port to attach the cartridge C to the camera. When the cartridge C is loaded into the cartridge, the shutter shaft 6 is rotated in conjunction with the closing operation of the cartridge lid to open the shutter, and when the cartridge C is taken out from the camera, the cartridge lid is opened in association with the opening operation of the cartridge lid. Before, the shutter shaft 6 is rotated to close the shutter.

Next, a camera in which the cartridge C containing the film F is loaded will be described. 5 is a front view of the camera, FIG. 6 is a plan view of the camera, FIG. 7 is a rear view of the camera, and FIG. 8 is a bottom view of the camera.

In FIG. 5, a taking lens barrel 11 is provided in the center, and from the upper right, a strobe light emitting section 12 that automatically emits strobe light when the brightness becomes low, a metering window 13 that measures the brightness of an object, an auto mode. AF projection window 14 that emits infrared light for focusing, viewfinder window for checking the subject
15. AF light receiving window that receives infrared light reflected from the subject
16 、 Self L to inform the operating state of the self-timer by light
The ED window 17 is connected in series. In addition, in the lower right corner, the high-definition size, which is the standard size for this camera, is used to form a panorama size print with the upper and lower edge images trimmed, and a normal size print with a 2: 3 ratio by trimming the left and right edge images A format switching button 18 for switching print format information is provided for optically recording (and sometimes magnetically recording) a signal for performing the recording on the film.

In FIG. 6, a release button 19 for shutter release is provided at the lower left. A date operation unit for magnetically recording a date signal for each shooting frame is provided in the upper right, and a date button for switching the date mode such as date, date and time, no imprint, etc., and correction of each date character A date set button 21 is provided, and an LCD 22 for displaying date characters, the number of frames to be photographed, various modes, a magnetic recording / reproduction failure warning, etc. is provided at the lower right.

In FIG. 7, when pressed from the upper right, S ₀ of the power supply circuit inside the camera is turned on to extend the lens barrel 11 for the photographing lens, and further pressing causes the main switch button 23 to collapse and magnetic recording failure. Sometimes magnetic recording cancel button 24 that allows you to continue shooting, eyepiece window 25 through the viewfinder, rewind button 26 to rewind the film halfway, self button 27 to set the self-timer mode,
A mode selection button 28 is provided which can be switched to a flash automatic light emission mode, a pre-light emission mode for red-eye reduction, a forced flash light emission mode, a flash light emission stop mode, or the like.
Further, reference numeral 29 is a convex portion generated by providing the magnetic head.

As described above, in the event of a magnetic recording failure, that is, in the case of a failure of the magnetic information recording means and / or the reproducing means, the photographer presses the magnetic recording cancel button 24 in spite of the failure and desires to take a picture. , L that has a function that cannot be used if the magnetic recording / playback means is at least broken, such as date characters
It is desirable to erase the display on CD22.

In FIG. 8, the camera has a cartridge C.
A cartridge lid 30 for loading the cartridge lid 30 and a cartridge lid button 31 for opening the cartridge lid 30 are provided.

FIG. 9 is a view showing that the cartridge cover 30 of the camera described above is opened and the cartridge C is dropped into the cartridge chamber 32. The cartridge C may have a shape as shown.

FIG. 10 is a view of the cartridge chamber 32 as viewed from the cartridge lid 30 side. A spool shaft 33 that engages with the spool 2 of the cartridge C is erected at the center. A photo reflector 34, which is a barcode reading means for reading the barcode of the barcode disc 1, is provided at the upper right,
The barcode disc 1 is rotated to read the film sensitivity, the number of frames to be photographed and the latitude as described above, and then the E ^{2 of the} camera is read.
Store in PROM. A cartridge detection pin that normally protrudes into the cartridge chamber 32 at the lower left by a spring or the like, and retracts from the cartridge chamber 32 by pressing from the tip.
35 are provided.

FIG. 11 is a diagram showing the operation of the cartridge C and the cartridge detection pin 35. Cartridge detection pin
The numeral 35 is provided at a position corresponding to the usage status display window 5 in FIG. Therefore, unused and partially used cartridges C can be loaded, and only used cartridges C cannot be loaded. The cartridge detection pin 35 is embedded in the main body 10, and its tip projects into the cartridge chamber 32 by a spring 36. Bar code disk 1 on the usage status display window 4 or 5
11 (A) and 11 (B), the cartridge detection pin 35 can be slid at the edge 1a of the bar code disk 1, but the start mark of the bar code disk 1 is positioned. When you do,
As described above, the cartridge detection pin 35 abuts the step portion 1b of the cartridge C and cannot be loaded.

FIG. 12 is a diagram of a pulse generation mechanism for detecting the timing pulse of bar code reading and the rotational phase of the spool shaft 33. FIG. 12A is an upper sectional view of the cartridge chamber 32. 12B is a view of the spool shaft 33 seen from below, FIG. 12C is a view of a pulse generating printed circuit board, and FIG. 12D is a view of the spool 2 of the cartridge C fitted to the spool shaft 33. .

In FIG. 12 (A), a spool gear 73, which will be described in detail later, is provided on the upper portion of the main body 10 and is integrally formed with the spool shaft 33 to rotate. A pulse generating printed circuit board 41 as shown in FIG. 12C is fixed to the upper portion of the main body 10, and the tip of the contact piece 42 fixed to the lower portion of the spool gear 73 is brought into contact with the pattern of the pulse generating printed circuit board 41. ing. S _U is a pattern of the switch at the reference position, and outputs the same signal as S _D through the OR circuit as shown in the partial circuit diagram of FIG. S _D' s 1 to 11 are patterns of reference pulse switches for generating reference pulses, and G is a ground.

In the present camera, after taking out the photographed cartridge C from the camera, the spool shaft 33 is automatically set to an angle at which the unused and partially used cartridges C can be loaded. . That is, after the film rewinding is completed and the cartridge C is taken out, the feeding motor described later automatically rotates in the rewinding direction again,
When the contact piece 42 detects that the pattern S _U is ON, it stops. At this time, the spool 2 is in the state shown in FIG. In addition, the spool 2 of the unused cartridge C,
180 phase with spool 2 of partially used cartridge C
Both of them can be fitted with the spool shaft 33 as they are without being displaced.

At the end of rewinding, the spool shaft 33 is controlled so that the spool 2 of the cartridge C is stopped at the position representing each usage state. The number of pulses generated from the pulse generation printed board 41 is used for this control. I am using. That is,
The number of S _D pulses is counted from the S _U ON position to stop the rewinding. For example, when an unused cartridge C is loaded, when rewinding without shooting: Stop at S _U ON, and unused display setting When rewinding without shooting all frames: 6th S _D O from S _U ON
When stopped at N and rewound after setting partial use display settings: All frames have been shot: S _D ON after S _U ON
Stopped at N, used display setting When partially used cartridge C is loaded, rewinding without shooting all frames: S _U Stopping at partially used display setting, rewinding after shooting all frames: S _U The first S _D O from ON
Stopped at N, used display setting Further, FIG. 12 (E) shows a timing chart of bar code reading by the pulse generated from the pulse generation printed board 41. 24 times in total including S _U and S _D
Since the bar code is read by the FF, even if there is unevenness in the rotation speed of the spool shaft 33, that is, the rotation speed of the bar code disk 1, the reading timing is secured and the bar code is not mistakenly read.

In FIG. 12F, the reference position switch S
_U also serves as the reference pulse switch S _D , and can be represented as an equivalent circuit as shown in FIG. S _{D1 to} S _D11 are commonly input to the OR circuit, S _U is also input to S _D through the OR circuit, and is also input to S _U by itself. If you are conducting here in any of the 12 switches are turned ON S _D, S _D and S _U only if S _U is ON will be turned ON.

FIG. 13 is a view showing the field of view of the founder. The visual field frame is provided with a standard-sized high-definition visual field frame 51, a panoramic visual field frame 52, and a normal visual field frame 53. When the panoramic size is selected by pressing the format switching button 18 in FIG. The display 54 lights up in green, and when the normal size is selected, the normal size display 55 lights up in green. Also, when you press the release button 19 to measure the distance properly, the AF mark
When 56 lights in green and the flash is charging or the brightness is low,
The strobe mark 57 lights up in red.

Next, a feeding mechanism will be described in which the film F is pulled out from the cartridge C, wound one frame at a time, and then rewound into the all-frame cartridge 1. FIG. 14 is a plan view of the film feeding mechanism, and FIG. 15 is a perspective view thereof.

In FIG. 14A, a feeding motor 61, which is a drive source for film feeding, is built in a reel 62 around which the film F fed from the cartridge C is wound.
A motor pinion 63 that is directly connected to the rotation shaft of the feeding motor 61 is provided above the reel 62. The driving force from the motor pinion 63 is transmitted to the second sun gear 70 via the intermediate gears 64 and 65, the first sun gear 66, the intermediate gears 67 and 68, and the fourth sun gear 69, but from the cartridge C to the film. F reel
At the time of winding to wind on 62, the motor pinion 63 rotates counterclockwise and the second sun gear 70 rotates clockwise, so that it carries the second planetary gear 72 meshing with the second sun gear 70. The second planetary lever 71 rotates clockwise, meshes the second planetary gear 72 with the spool gear 73, and rotates the spool gear 73 clockwise. When the film F is rewound from the reel 62 into the cartridge C, the motor pinion 63 rotates clockwise and the second sun gear 70 rotates counterclockwise. The second planetary lever 71 carrying the meshing third planetary gear 74 rotates counterclockwise, meshes the third planetary gear 74 and the spool gear 73, and the spool 2 of the cartridge C together with the spool gear 73 counterclockwise. Rotate in the direction.

On the other hand, the first planetary lever 76, which carries the first planetary gear 75 meshing with the first sun gear 66, rotates clockwise during winding, and the first planetary gear 75 causes the reel gear 77 to rotate.
Is driven to rotate the reel 62 together with the reel gear 77 in the clockwise direction. Further, during rewinding, the first planetary lever 76 rotates counterclockwise, so the driving force of the first planetary gear 75 is not transmitted to the reel gear 77, that is, the driving force of the film motor 61 is applied to the reel 62. Is not transmitted.

In the film feeding mechanism having such a structure, when the film motor 61 is rotated counterclockwise, the spool 2 in the cartridge C is rotated clockwise, and the tongue end Fd of the film F is illustrated. Send it out between the rail surface of the main body and the pressure plate 81. Further, although the film F is fed by the rotation of the spool 2, the tongue end portion F of the film F is
When d passes between the magnetic head 85 and the camera body, the film F may be deformed in the vicinity of the connecting portion between the spool 2 and the film F due to a feeding load, and stable film feeding may be impossible. is there. Therefore, after the tongue end Fd of the film F is fed out, the film is fed to the reel 62 by the drive roller 78, and the driving force is used to feed the film. Therefore, even when the film F passes between the magnetic head 85 and the camera body, an excessive load is not applied to the vicinity of the connecting portion between the spool 2 and the film F, and stable film feeding is performed.

The pressure plate 81 is pressed against the rail surface by a pressure plate spring 82. A pressure plate roller 83 integrally formed coaxially and a fourth planetary gear 79 face each other substantially at the center of the pressure plate 81 in the film feeding direction, and the fourth planetary gear 79 is the fourth planetary lever 80.
And is meshed with the fourth sun gear 69. The center of the fourth sun gear 69 is provided in the cartridge C direction with respect to the center of the fourth planetary gear 79.

When the film motor 61 rotates counterclockwise, the fourth sun gear 69 also rotates counterclockwise.
The fourth planetary lever 80 also rotates counterclockwise. Therefore, the drive roller 78 feeds the film F toward the reel 62 while sandwiching the film F with the pressure plate 81. The film feeding speed by the drive roller 78 is set higher than the feeding speed by the spool 2, and the spool gear 73 is rotated by the film F faster than the peripheral speed of the second planetary gear 72. Therefore, the second planetary gear 72 rotates counterclockwise and disengages from the spool gear 73, so that the feeding force of the film F is transmitted only from the drive roller 78. Also, the film F
Since the film is fed by the driving roller 78 even if the pressure plate 81 or the magnetic head 85 feeds the film, the film F can be fed without being deformed in the cartridge C.

As a matter of course, the driving roller 78 is provided at one end outside the photographing screen. Drive roller
A pressure plate roller 83 is provided in the pressure plate 81 so as to face 78.

FIG. 14B shows a driving roller during film feeding.
78 is an enlarged view of 78 and the pressure plate roller 83. Clearance (cl) is provided by 0.1 to 0.2 mm and retracted so that the pressure plate roller 83 does not protrude from the surface of the pressure plate 81 due to manufacturing error.

FIG. 14C is an enlarged view of the drive roller 78 and the pressure plate roller 83 when the film is not loaded. The drive roller 78 contacts the pressure plate roller 83 to prevent abrasion.

The tongue end Fd of the film F passing through the pressure plate 81
Passes through the magnetic head 85 and is then wound around the reel 62 by a well-known back cover roller and body roller (not shown). In the magnetic head 85, reproduction of film information,
Alternatively, at least one of recording of shooting information of the camera is performed.

When the tongue end Fd of the film F is wound around the reel 62, the feeding force of the film F is transmitted from the reel 62.
The film feeding speed by the reel 62 is set higher than the film feeding speed by the drive roller 78, and the fourth planetary gear 79 rotates faster than the peripheral speed of the fourth sun gear 69 by the film F. Therefore, the fourth planetary gear 79 rotates clockwise, and the drive roller 78 separates from the film F.

In this way, when the tongue end portion Fd having a predetermined length is fed and the perforation Fc of the first frame is fed to the position of the photoreflector 91 for perforation detection, the feeding is stopped and one frame is stopped. It is possible to shoot the eyes.

In this way, one frame is photographed one by one, and the number of photographed frames of the loaded film is determined by the bar code disc 1
Since the camera reads it in advance and stores it in the E ² PROM, when the shooting is completed up to the predetermined final frame, the feeding motor
61 is driven in reverse. Then, the third planetary gear 74 meshes with the spool gear 73, and the spool 2 rewinds the film F into the cartridge C. Here, since the first sun gear 66 also rotates in the reverse direction, the meshing of the first planetary gear 75 and the reel gear 77 is also released, and the reel 62 does not receive the driving force of the feeding motor 61, so that it can be rewound. Further, since the fourth sun gear 69 also rotates in the reverse direction, the fourth planetary gear 79 rotates in the direction away from the film F, the pinching of the film F by the drive roller 78 and the pressure plate roller 83 is released, and the drive roller 78 rewinds. Does not become a load of.

In the above feeding mechanism, stoppers are naturally provided near the first planetary lever 76, the second planetary lever 71, and the fourth planetary lever 80 so as not to rotate more than a predetermined angle. It is necessary, but omitted in the figure.

Further, in FIG. 15, when the bar code disk 1 is rotated by the rotation of the spool gear 73, as described above, the bar code information is read by the photo reflector 34 for reading the bar code.
Read by.

Further, two LEDs 93 are provided in the lower center, and optical information Fg is optically recorded on the film F. In this case, 2-bit information can be recorded.

In the camera of this embodiment, when it is desired to use films having different sensitivities, the loaded film is rewound in the middle without shooting all frames and reloaded at a later date,
Since the presence or absence of shooting is recorded on the magnetic track Fe,
You can automatically wind up to unexposed frames. However, as shown in FIG. 15, since the magnetic head 85 is located on the reel 62 side of the shooting screen Fa, it is overwound when it is detected that it is an unexposed frame, and therefore a predetermined amount is rewound. Must-have. In order to secure the positional accuracy of the shooting screen Fa, in this embodiment, after rewinding by a required amount or more, winding is performed again and stopped at the position of the first unexposed screen.

However, as described above, the reel 62 and the spool 2
When the feeding mechanism is switched from rewinding to winding while the film is stretched between the first planetary gear 75 and the reel gear.
If the mesh of 77 is faster than the disengagement of the third planetary gear 74 and the spool gear 73, the film feeding speed by the reel 62 is faster than the film feeding speed by the spool 2, so the reel gear 77
The reel 62 is rotated by the drive of and the film F is wound up,
The film F causes the spool gear 73 to rotate via the spool 2 and the spool shaft 33. As a result, the third
The planetary gear 74 and the spool gear 73 cannot be disengaged from each other and the meshing continues, but since the rotation speed of the spool gear 73 by the film F and the rotation speed of the spool gear 73 by the third planetary gear 74 are different, Eventually, the feeding motor 61 stops.

For this purpose, a play joint as shown in FIG. 16 is used. FIG. 16 (A) is a vertical sectional view thereof. First planetary gear 75
The idle gear 95 is rotatably coaxial with the reel gear 77.
Mesh with. A drive pin 75a is provided upright on the first planetary gear 75, a C-shaped groove 95a is bored on the idle gear 95, and the drive pin 75a is inserted into the groove 95a. As a result, at the time of winding, as shown in FIG. 16 (B), the first sun gear 66 rotates, and even if the first planetary gear 75, that is, the drive pin 75a rotates in the direction of the arrow, it rotates nearly one rotation. Until the idle gear 95 does not rotate,
The idle gear 95 rotates only when the drive pin 75a comes into contact with the side wall 95b of the idle gear 95. Therefore, at the initial stage when the rewinding is switched to the winding and the meshing of the third planetary gear 74 and the spool gear 73 is not disengaged, the reel gear 77, that is, the reel 62.
When the driving force is not transmitted to the reel 62 and the driving force is transmitted to the reel 62, the third planetary gear 74 and the spool gear 73 are disengaged. Note that, contrary to FIG. 16, a groove may be provided in the first planetary gear 75 and a drive pin may be provided in the idle gear 95. Further, since the film feeding speed by the reel 62 is faster than the film feeding speed of the spool 2, the idle joint is not necessary for switching from winding to rewinding.

FIG. 17 is a diagram for explaining the mounting position of the partial use detection sensor S _HU . S _HU is a sensor that detects the diameter of the bar code disk 1 above the cartridge C and detects whether the film is unused or partially used depending on the rotational position of the bar code disk 1.

Next, the relationship between the film used in this embodiment and the taking lens will be described. Polyethylene naphthalate is used as the base of the film, and polyethylene naphthalate has a characteristic that it mainly reacts with ultraviolet rays of 220 to 380 nm and emits fluorescence. Therefore, due to the ultraviolet rays received at the time of photographing, the fluorescence from the film base continues after the shutter is closed and before the film is developed, so that fogging occurs even if the amount of received ultraviolet rays is small and the amount of fluorescence is very small.

For this reason, it is sufficient to use a taking lens having an optical component formed of a material which does not transmit at least ultraviolet rays. That is, PMMA (polymethylmethacrylate) which is a plastic material, SF type glass, or L
An optical system having at least one optical component made of aSF glass may be formed. In addition, in order to expand the degree of freedom of the configuration of the optical system and increase the efficiency of ultraviolet ray cut,
The UV cut coating may be used in combination with the optical component made of the above material, or may be applied to the optical component made of another material. In particular, PMMA cuts ultraviolet rays of 380 nm or less and has good moldability, so aspherical lenses can also be processed.
Most preferred as a material used for an optical system.

FIG. 18 is a diagram of a photographing lens used in this embodiment. As materials used, the first lens L ₁ is LaF010, the second lens L ₂ is SFL6, the third lens L ₃ is LaF05, and the fourth lens L. ₄ uses PMMA. Therefore, the main photographing lens prevents the transmission of ultraviolet rays by the second lens L ₂ and the fourth lens L ₄ .

Next, the flow chart of the camera of this embodiment will be described with reference to FIGS. 19 to 25. First, the circuit configuration is shown in the block diagram of FIG.

In FIG. 19, a CPU 50 for controlling each circuit
0 has a ROM 501 and a RAM 502. 511 is a power supply detection circuit that detects that the power supply voltage is equal to or higher than a predetermined voltage,
Reference numeral 512 is a bar code reading circuit that reads bar code information by the bar code reading photo reflector 34 and outputs the information. 513 is a perforation detection circuit that detects the perforation of the film by the perforation detection photo reflector 91 and outputs the information. ,
514 is a display circuit for displaying information to be displayed on the camera in the LCD 22 and the viewfinder, and 515 is a strobe light emitting unit 1.
2.Strobe circuit for emitting flash from 2; 516, photometric circuit for measuring subject brightness; 517; distance measuring circuit for measuring subject distance; 518; lens drive motor, shutter drive motor, film feeding motor, etc. A motor control circuit for controlling, 519 is a shutter operation detecting circuit for detecting the operation state of the shutter, and 560 is an E ^{2 for} storing each operation information.
PROM, 561 is a magnetic reproducing circuit for reproducing magnetic information by the magnetic head 85, 562 is a magnetic recording circuit for recording magnetic information by the magnetic head 85, 563 is an optical imprinting unit for imprinting 2-bit information on the film by the LED 93, Reference numeral 564 is a partial use detection circuit for detecting the rotational position of the bar code disc 1 to detect partial use of the film.

On the other hand, S _MC is a magnetic recording cancel switch that operates when the magnetic recording cancel button 24 is pressed to continue shooting when there is a magnetic recording failure, S ₀ is a main switch operated by the main switch button 23, and S ₁ is The release switch operated by the first step of the release button 19, S ₂ is the release switch operated by the second step of the release button 19, S ₃ is the mode switch operated by the mode selection button 28, and S _B is the opening / closing of the cartridge lid 30. The cartridge lid switch operated by S _C is a cartridge loading switch that detects loading of the cartridge C by the cartridge detection pin 35,
S _U is a reference position switch provided on the pulse generation printed circuit board for regulating the position of the spool shaft 33, S _D is a reference pulse switch provided on the pulse generation printed circuit board and generates a reference pulse, and S _A is a format switch. Screen size switch to switch between high-definition size, panorama size and normal size by button 18, S _S is self button 2
7 is a self-switch operated by 7, S _R is a rewind switch operated by rewind button 26, S ₄ is a date mode switch for switching the date mode such as date, date and time, no imprint by mode button 20, S ₅ Is the date set button 21
It is a date set switch that corrects each date character by.

Next, Table 1 shows the operating states of the switches shown in the flow chart.

[0059]

[Table 1]

Table 2 shows the flag names, symbols and operating states.

[0061]

[Table 2]

Table 3 shows the names and symbols of the RAMs.

[0063]

[Table 3]

First, the main flowchart is shown in FIG.
It will be described based on.

In flow 601, resetting is performed by loading the battery 510, and the program starts. On the 602, reset ports such as switch inputs, flag and R
Clear the contents of AM and proceed to 605.

In 605, the cartridge loading switch S _C is detected, and if the cartridge C is not loaded, 606 to 6
At 08, it is detected whether the spool shaft 33 is in the initial position, and if it is not in the initial position, the spool shaft 33 is set to the initial position by the rotation of the film feeding motor. At 609, the cartridge lid switch S _B is detected. If it is detected to be open, then at 610 the flag F _B is set. When it is detected that the lid is closed at 609, a determination F _B at 611. This is for autoloading. Here, the auto load routine will be described based on the flowchart of FIG. Closed state of the cartridge cover 30 is detected by the 609 of the main routine, further when it is determined that the lid has been opened just before at 611, detects whether the cartridge C is loaded in 639 after resetting the flag F _B at 638 If it is loaded, then at 640, it is detected whether or not it was loaded before the cartridge lid was opened. This is the case when the lid is opened in the middle of shooting with the cartridge C still loaded. If it is determined that the cartridge C is newly loaded, the automatic load routine 641 starts.

When the auto load routine is entered, the partial use detection sensor 711 determines whether the loaded cartridge is unused or partially used, and 711-1 and 711-2 set the flag indicating partial use to the state. Set or reset. Then, feeding is started at 712, and the number of barcode readings is set to R _DX . Here, the number of times the bar code is read is set to 24 because the reference pulse switch consists of 12 patterns per revolution, and S _D is turned on and off.
This is because if 24 times are repeated, all the bar code blocks can be read in one round.

At 713, this state change of S _D is detected, and 714
Bar code reading count R _{DX minus} 1 and 717 R
Repeat until _DX becomes 0. After reading the barcode
At 718, it is detected whether the leading edge of the film has passed.

In this system, at the time of auto-loading, when the feeding is stopped when two perforations are detected, the first frame faces the shooting image frame. Therefore, the number of perforations to be counted at 720 is 2 R
Set it to _CP, and set the number of frames and film sensitivity obtained from the bar code information to R _EX and R _ISO . At 721, the first perforation Fb is detected.

When the first perforation Fb is detected
At 723, R _CP and R _SP are set, and at 724, magnetic information is read.

At 725, it is determined whether or not the magnetic information can be correctly read, that is, if the magnetic information can be correctly read, the magnetic information recording / reproducing means is normal. As described above, the camera of the present invention has the abnormality detecting means for detecting the abnormality of the magnetic information recording means and / or the reproducing means.

At 726, it is judged from the magnetic information whether the loaded cartridge C is unused or partially used. If not partially used, proceed to 727 and go to the second perforation Fc
When 729 is detected, R _SP and R _CP are set at 729, feeding is stopped, and then the process returns.

If it is judged at 726 that the film is partially used, at 731, the number of photographed frames is taken into R _{ED based} on the magnetic information, and the flag F _U indicating that the film is partially used is set.

At 732, the magnetic information is used to determine whether the image was taken in the prewind. When the image is taken in the prewind, it is possible to take the image from the first frame to the frame before the already photographed frame. Therefore, the number of frames that can be photographed is the total number of frames to be photographed−the number of frames that have been photographed. Therefore, the flag is set in 738 together with the flag, and the second perforation Fc is detected in 739.

When the second perforation Fc is correctly detected, RAM and flags are set in 741 and 742, the feeding is stopped, and the process returns.

If it is not the prewind, the number of photographable frames is the total number of photographed frames minus the number of photographed frames, but since the frames that have not been photographed must be fed, the number of perforations to be counted is the number of photographed frames. 2 times +1
Set it to R _CP at 733.

In 734 to 737, R _SP and R _CP are calculated each time perforation is detected. When R _CP becomes 0, the routine proceeds to 742, sets a flag, stops feeding, and returns. When the magnetic recording at the leading end of the film cannot be read by the auto load flow 725, the process jumps to the magnetic recording / reproducing error routine E5 of FIG. 101 detects the second perforation and 102
There is a warning means for setting a flag F _ME indicating that magnetic recording is impossible with and for displaying a magnetic recording failure warning display on the LCD 22 with 103. At 104, the flag F _HU determines whether the loaded cartridge is unused or partially used. To prevent double exposure when it is partially used 107
To start rewinding the film. After detecting two perforations at 108 to 111, 112 detects the passage of the leading edge of the film, 113 waits for 3 seconds to make sure that the leading edge of the film is caught in the cartridge, and 114 uses the cartridge. The display at the time the display was loaded (ie,
(Partial use display), stop rewinding at 115, wait for the cartridge to be removed at 116, cancel the warning display at 117, reset the flag at 118, and return to the main routine.
Of course, the warning display is continued without canceling the warning display at 117, and F
_{It is} also possible to return to the main routine with _ME set and prompt the user to repair the camera.

When it is judged at 104 that the loaded film is unused, at 105 and 106, the photographer selects whether or not to photograph. At 105, the film is rewound by detecting the midway rewind switch, and if the user determines that shooting is not performed if magnetic recording is not possible, the midway rewind switch is pressed. In this case, since no image has been captured, it is needless to say that the used / unused display of the cartridge is displayed at the time of loading (that is, the unused display).
When the user wants to shoot only when the user cannot perform magnetic recording, the magnetic recording cancel switch S _{MC, which} is operated by pressing the magnetic recording cancel button 24, is operated to return from 106 to the main routine in which normal shooting can be performed. As described above, the magnetic recording cancel switch S _MC is a stop releasing means independent of other camera operating means for releasing the stop of the function. In this case, the magnetic recording failure warning display is continuously displayed, which serves as a warning means to inform the user that magnetic recording cannot be performed. At 612, the main switch S ₀ is detected. If 0, the power is turned off at 613, and if it is 1, power is turned on at 614.

At 615, the opening / closing of the cartridge lid switch S _B is detected, and if it is open, no further operation is performed.

At 616, the rewinding switch S _R is detected, and when it is pressed, the rewinding is performed halfway only when it is determined at 617 that the cartridge C is present. When the cartridge C is not present, the rewinding is not performed. . In the figure on the right side, 61
If the flag F _ME indicating whether magnetic recording is possible is set in 7-1, magnetic recording is impossible, but magnetic recording is canceled in 617-2 in order to reconfirm to the photographer whether or not to continue shooting. The operation of the camera is stopped until the switch S _MC is pressed. The operation stop of the camera serves as a control means for stopping the photographing function that at least the shutter release function itself stops. Further, as described above, the magnetic recording cancel switch S _MC is a stop releasing means independent of other camera operating means for releasing the stop of the function. However, since the confirmation that the shooting is continued without performing the magnetic recording is performed by the magnetic recording error routine 106 at the time of autoloading, it is possible that it is not performed at this point. Further, the function of releasing the stop by the stop releasing means is at least a function other than that relating to the magnetic information.

At 618, it is determined whether or not the release switch S ₁ is pressed. If it is pressed, the light measurement and distance measurement are performed at 619, and at 620 it is determined whether the light measurement result is low brightness. If it is 621, the flash is charged.

At 622, the opening / closing of the cartridge lid 30 is detected, and if opened, the process returns.

In 623 and 624, the release switches S ₁ and S ₂ are detected, and when S ₂ is pressed, after performing focus adjustment at 625,
The shutter is driven to perform exposure. At the same time, the optical information F _g is optically recorded on the film F by the LED 93 according to the mode selected by S _A. Then, in 628, it is detected whether the cartridge C is loaded. If it is not loaded, the process returns to the original state. If it is loaded, the 629 judges whether the remaining number of films is 2 or more, and the remaining number is 2 or more. In that case, the value of RAM such as the number of shots and the number of perforations is counted by 630,
Feeding starts at 1. Then, after detecting perforation in 632, it is judged whether or not magnetic recording is possible in 632-1 by the flag F _ME , and if magnetic recording is possible, in 633 the photographing information is magnetically recorded in the magnetic storage portion of the film, and If the recording is impossible, the RAM value is counted at 632-2 and magnetic recording is not performed, and the feeding is stopped at 635 after the second perforation is detected at 634.

Next, the rewinding routine will be described with reference to FIGS. If the number of remaining frames in the film is 1 in 629 in the main flow, the rewind routine of 800 is skipped.

In step 801, R _ED and R _CX are calculated, and the feeding is started. After detecting the first perforation in 802, if it is determined that magnetic recording is possible in 802-1, magnetic recording is started in 803. When the magnetic recording is completed in 804, in the case of the last frame, the second perforation cannot be detected and detection is not possible. Therefore, in 805, the flag F _R1 indicating the rewinding is set and the rewinding is started. If the flag F _ME is checked in 802-1 and magnetic recording is not possible, rewinding is started in 805 without magnetic recording.

At 806, it is judged whether or not the cartridge lid 30 is opened during the rewinding, and if opened, the rewinding is stopped until it is closed again at 807 to 809. At 810, perforation is detected, and when detected, R _SP is subtracted at 812.

If R _SP is not 0 in 827, it is judged whether R _SP is 1 in 834. If R _SP is 1, magnetic recording indicating the end of photographing must be performed at 835 at 835.
If it is determined in 1 that magnetic recording cannot be performed, magnetic recording is not performed. 828 detects if the cartridge chamber lid is not opened, and if it is not opened, the rewinding is temporarily stopped at 829-831, and 832 detects whether the leading edge of the film has passed over the detection element. Then, wait for 3 seconds so that the film front end is securely wound into the cartridge, and after the film front end is securely wound into the cartridge C, the use indications at 841 to 847 in FIG. Stop the spool 2 with. First, at 841, the reference position is detected. The used position is from the reference position and 210 when loaded as an unused film.
Since the position is 30 degrees when loaded as a partially used film, it is judged at 842 whether it was unused or partially used at the time of loading, and at 843 and 844, the reference signal to be detected for angle detection. Set the number of.

In 845 to 847, the switching of the reference signal is detected, and when the switching is performed the specified number of times, each flag is reset in 848 and the rewinding is completed.

At 849, the end of rewinding is displayed on the display unit. When the rewinding is completed, the lid of the cartridge chamber is opened, and the camera is not operated until the cartridge is taken out. After detecting that the cartridge is taken out at 850 to 853, the operation is finished.

Next, a case where the midway rewind switch is pressed at 616 will be described with reference to FIG. At 860, when the midway rewinding routine is entered, at 861, a flag F _R2 indicating that the midway rewinding is being performed is set and the rewinding is started.

At 862, it is judged whether or not the cartridge lid 30 is opened during the rewinding, and if opened, the rewinding is stopped until it is closed again at 863-865. 866 detects the perforation after the start of rewinding, and if detected, R is returned at 868.
Subtract _SP .

If R _SP is not 0 in 883, it is judged whether R _SP is 1 in 890, and if R _SP is 1, magnetic recording is performed at 891 to indicate the end of shooting and the film is in use. Although it must be, magnetic recording is not performed when it is determined that magnetic recording is not possible with the 890-1. In 884, it is detected whether the cartridge chamber lid is opened, and if it is not opened, the rewinding is temporarily stopped at 885 to 887, and the 88
In 8 it is detected whether or not the leading edge of the film has passed over the detection element. In 889, the film leading edge is reliably wound into the cartridge C by waiting for 3 seconds so that the leading edge of the film can be reliably rolled into the cartridge. Figure 24
893 detects the reference position of the spool.

In 893-1, whether or not magnetic recording is possible is flagged as F _ME.
To judge. When the rewind film is reloaded into the camera on the way, the camera feeds the film up to a predetermined frame according to the shooting information recorded in the magnetic recording part of the film. Since the camera cannot judge which frame has been completed, a double exposure accident may occur. For this reason, if it is determined in 893-1 that magnetic recording is not being performed, jumping to 842 is performed so as not to be reloaded even in the case of midway rewinding, and then used display is performed.

When the magnetic recording is normally performed and the film is rewound in the middle, the cartridge use indication must be set to partial use. Whether it is loaded as a use or a partial use is detected by the flag F _U1 . When loaded as unused, set the number of reference signals 12 to be detected for angle detection at 895 to stop at a position 180 degrees from the reference position, and set 896 to 898.
After detecting the reference signal for the specified number of times, stop the spool after 848.

When it is loaded as a half-use film when loaded, it is necessary to display the half-use display again.
When the reference position is detected in 3, jump to 848 and stop rewinding. When loaded as unused film when loaded, so it must be stopped from being rotated 180 degrees from the reference position in order to perform use display middle, to be detected reference pulse switches to count R _SD When 12 is set and the signal change is detected 12 times in 896 to 898, jump rewind is stopped at 848.

As can be seen from the above description, the camera of the present invention determines whether the magnetic information can be read correctly as described in step 725 of FIG. 21, and if it can be read correctly, the magnetic information recording / reproducing means is normal. If it cannot be read, it has an abnormality detecting means for identifying that it is not normal but a failure.

Further, as described in step 104 of FIG. 25, when the magnetic recording is defective, if the loaded cartridge is a partially used film, it is rewound so that it cannot be photographed,
If it is an unused film, it has a control means for stopping the photographing function of stopping until the midway rewind button or the magnetic recording cancel switch is pressed in steps 105 and 106.
Alternatively, as described in steps 617-1 and 617-2 in FIG. 20, when the magnetic recording fails, at least the shutter release function itself stops until the magnetic recording cancel switch S _MC is operated in 617-2. It is a control means to stop.

Further, as described in step 103 of FIG. 25, the magnetic recording failure warning display has warning means for displaying the warning on the LCD 22 to warn the user, so that it is not overlooked. Since the shutter release function itself stops at least until the magnetic recording cancel switch S _MC is pressed to have a control means for stopping the photographing function, even if the warning means is overlooked and the release button is mistakenly pressed, a picture can be taken. There is no.

Further, step 106 in FIG. 25 and step 6 in FIG. 20.
As described in 17-2, the magnetic recording cancel switch S _MC has stop release means independent of other camera operation means for releasing the stop of the function. The function of the stop release by the stop release means is at least a function other than the magnetic information. Therefore, even if the safety function is activated due to the failure related to the magnetic information and the photographing is stopped, the magnetic recording cancel switch S _MC can be pressed to immediately continue the photographing.

[0100]

According to the present invention, the photographer does not overlook that the recording / reproducing function of the magnetic information on the film magnetic layer is defective, and the photographing is continued even when the safety function is activated and the photographing is stopped. A camera that enables this is now provided.

[Brief description of drawings]

FIG. 1 is a front view of a film pulled out from a cartridge.

FIG. 2 is a plan view of a cartridge.

FIG. 3 is a diagram of a barcode disc.

FIG. 4 is a diagram showing a usage state of a film.

FIG. 5 is a front view of the camera.

FIG. 6 is a plan view of a camera.

FIG. 7 is a rear view of the camera.

FIG. 8 is a bottom view of the camera.

FIG. 9 is a diagram of dropping a cartridge into a cartridge chamber.

FIG. 10 is a view of the cartridge chamber as viewed from the cartridge lid side.

FIG. 11 is a view showing the operation of the cartridge and the cartridge detection pin.

FIG. 12 is a diagram of a pulse generation mechanism.

FIG. 13 is a diagram showing a field of view of a finder.

FIG. 14 is a plan view of a film feeding mechanism.

FIG. 15 is a perspective view of a film feeding mechanism.

FIG. 16 is a view of a play mechanism.

FIG. 17 is a diagram illustrating a position of a sensor.

FIG. 18 is a diagram of a taking lens used in this example.

FIG. 19 is a block diagram of a camera.

FIG. 20 is a main flowchart.

FIG. 21 is a flowchart of an auto load routine.

FIG. 22 is a flowchart of a rewinding routine.

FIG. 23 is a flowchart of a rewinding routine.

FIG. 24 is a flowchart of a rewinding routine.

FIG. 25 is a flowchart of a magnetic recording / reproducing error routine.

[Explanation of symbols]

24 Magnetic recording cancel button F _C Cartridge flag F _ME Magnetic recording enable / disable flag F _U1 Partial usage flag S _HU Parts usage detection sensor S _MC Magnetic recording cancel switch

Front Page Continuation (72) Inventor Noriyuki Kaedeoka Konica Co., Ltd. 2970 Ishikawacho, Hachioji City, Tokyo

Claims (3)

[Claims] 1. A camera having magnetic information recording means and / or reproducing means for recording and / or reproducing various kinds of information on a magnetic layer coated on a film, the abnormality detecting the abnormality of the magnetic information recording means and / or reproducing means. A detection means; a control means for stopping the photographing function of the camera when the abnormality detecting means detects an abnormality; a warning means for warning the photographer of the abnormality; and a photographing function of the camera stopped by the control means. A camera provided with a stop release means provided independently of other camera operation means for the photographer to release the stop. 2. The camera according to claim 1, wherein the photographing function of the camera stopped by the control means is at least a shutter release function of the camera. 3. The camera according to claim 1, wherein the function of canceling the stop by the stop canceling means is at least a function other than relating to magnetic information.