JP2976166B2 - 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 having a reading means capable of optically reading information on a bar code disk which rotates integrally with a spool of a film cartridge.

[0002]

2. Description of the Related Art Conventionally, in a camera having a reading means capable of optically reading information on a bar code disk which rotates integrally with a spool of a film cartridge,
In order to read a bar code with a necessary and sufficient resolution, for example, Japanese Patent Application Laid-Open No. H5-142634 proposes the following means.

That is, by providing a photoelectric sensor as reading means for reading a bar code, and a slit member arranged on the reading surface of the photoelectric sensor for narrowing a light emitting beam and a light receiving angle, the electrical output waveform can be rectangular. It discloses that the bar code information is read with high resolution.

[0004]

That is, as described above, the photoreflector system using a general-purpose light-emitting element and a light-receiving element for reading a barcode disk with a photoelectric sensor as described above has a problem in that the bar of the barcode disk is thin and the The resolution of the reflector was insufficient, and the white / black S / N ratio of the bar code display could not be sufficiently obtained, so that the reliability as the photoelectric sensor was lowered. Therefore, by providing a photoelectric sensor that reads a barcode as described above and a slit member that is arranged on the reading surface of the photoelectric sensor and narrows a light emitting beam and a light receiving angle, the electrical output waveform is close to a rectangular shape. The bar code information is read with high resolution.

[0005] However, by doing so, the amount of light is reduced by the slit member, the electrical output is reduced, and the reliability of the photoelectric sensor is also lowered.

The present invention has been made to solve the above problems. That is, an object of the present invention is to provide a camera having a reading unit that can read information on a barcode disk that rotates integrally with a spool of a film cartridge without reducing reliability in a simple, low-cost, space-saving manner. Things.

[0007]

The object, according to an aspect of is provided in the film cartridge, spool and information of the bar code disc that rotates integrally of the film cartridge, 該Fu
Film cartridge is loaded in the film cartridge chamber.
From the window provided in the film cartridge when
In an optically readable camera, a light emitting element and
A photoelectric sensor consisting of a combination with an optical element
At the position opposite the window provided in the cartridge.
Through the hole in the film cartridge chamber.
This is achieved by a camera characterized by being provided so as to protrude from the inner wall surface of the film cartridge chamber .

The object is provided on a film cartridge, and information on a bar code disk which rotates integrally with a spool of the film cartridge is stored in the film cartridge.
When a cartridge is loaded in the film cartridge chamber, it can be read optically through the window provided in the film cartridge.
Combination of light emitting element and light receiving element
A photoelectric sensor consisting of a
The film cartridge so that it projects into the
This is achieved by a camera characterized by being provided so as to protrude from the inner wall surface of the cartridge chamber .

[0009]

An embodiment of the present invention will be described with reference to FIGS.
This will be described in detail.

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

FIG. 1 is a front view in which the film is pulled out of the cartridge. In the figure, at one end of the film F, two perforations Fb and Fc are provided for one frame of the photographing screen Fa, but a tongue end Fd is provided.
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.
Subject brightness, exposure time, aperture value, presence of backlight, presence of flash, presence of continuous shooting, type of camera, owner I
D, trimming information, photographing date, photographer's memo, photographed information, and other photographing information are recorded by a recording head provided in the camera, and used as information during print processing after film development. A magnetic track Ff is also provided at the other end of the tongue end Fd of the film F. The magnetic track Ff has a maker name, a film type, an emulsion lot, sensitivity, the number of photographed frames, The film information such as date of manufacture is recorded, and is reproduced by a 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 also record photographic information in some cases, so that a margin is provided for recording on the magnetic track Ff.

When the photographing area on the film is used to the maximum, the screen size is set to a high-definition size slightly wider than the conventional screen size having an aspect ratio of 2: 3. By trimming the edges, a normal size having an aspect ratio of 2: 3 or by trimming the upper and lower edges, a panorama size having a landscape screen longer than the HDTV size is formed.

When the film F is not used or after use, the entire film including the tongue end is stored in the cartridge C.
In order to reliably feed the tongue end Fd of the film F from the cartridge C, a TA
PEN (polyethylene naphthalate), which can be formed thinner than C, PET or the like, and has high tensile strength or the like, is used.

Further, as described later, the cartridge C is provided with a use state display window for displaying the use state of the film.

FIG. 2 is a plan view of the cartridge C.
A barcode disk 1 is built in an end portion of a space where the film F in the cartridge C is stored, and is assembled so as to be integrally rotatable together with the spool 2. FIG. 3 is a diagram of a barcode disk. The barcode on the barcode disk 1 has film information corresponding to a conventional DX code such as film sensitivity and the number of photographed frames.
It is divided into 24 areas at 15-degree intervals, and a black and white pattern is used as a reference position to indicate the start of information when four consecutive blocks of black appear. If the same color continues for two consecutive blocks, "1", only one block In this case, information is written according to a rule such as "0", the film sensitivity is 5 bits, the number of frames to be shot is 3 bits, the latitude is 2 bits,
A total of 10 bits of information are shown. If film and camera standards are unified, one barcode block
An angle other than 15 degrees may have an area other than 24, and the rule of information recording may be a rule other than the above.

The rotating bar code disk 1 has a bar code window 3.
When the film information is read from the camera, the spool 2 is rotated while the spool 2 is rotated by a photoelectric element such as a photoreflector provided on the main body opposite to the barcode window 3 when the film information is read into the camera. Read on. The use state of the film is displayed on the use state display windows 4 and 5, and when a long radius cam and a short radius cam are seen as shown in FIG. 2, all frames are photographed after the film is loaded into the camera. FIG. 4A shows a partially used state in which the film is rewound in the middle. When both cams having a long radius as shown in FIG.
When a cam with a short radius is seen in both cases as in (B), it indicates that the film has been used, that is, the film has been used.

The spool 2 has convex portions 2a and 2b and concave portions 2a.
c and 2d, and a separately-described spool shaft on the camera side is fitted.

Since the unused or used film F may leak from the film outlet of the cartridge C, a rotary shutter is provided at the film outlet (not shown), and the cartridge C is connected to the camera. When the cartridge C is loaded into the camera, the shutter shaft 6 is rotated to open the shutter in conjunction with the closing operation of the cartridge lid, and when the cartridge C is removed from the camera, the cartridge lid is opened in conjunction with the start of the opening operation of the cartridge lid. First, the shutter shaft 6 is rotated to close the shutter.

Next, a camera for loading the cartridge C containing the film F 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 photographing lens barrel 11 is provided at the center, and a strobe light emitting unit 12 which automatically emits a strobe light when the brightness becomes low from the upper right, a photometric window 13 for measuring the subject brightness, an auto AF projection window 14 for projecting infrared light for focusing, viewfinder window for checking subject
15. AF light receiving window that receives infrared light reflected from the subject
16. Self-L which informs the operation status of the self-timer by light
An ED window 17 is provided continuously. In the lower right, a panorama size print with the upper and lower edges trimmed and a normal size print with a ratio of 2: 3 formed by trimming the upper and lower edges of the image with the standard HDTV size of this camera A format switching button 18 for switching print format information for magnetically or optically recording a signal for performing the recording on a film is provided.

In FIG. 6, a release button 19 for performing a shutter release is provided at the lower left. A date operation unit for magnetically recording a date signal for each photographed frame is provided at the upper right, a mode button 20 for switching a date mode such as date, date and time, no imprinting, 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 shot frames, various modes, and the like is provided at the lower right.

In FIG. 7, from the upper right, when the button is pressed, the power supply circuit S _{0 in the} camera is turned on, the lens barrel 11 for the taking lens is extended, and when the button is further pressed, the main switch button 23 and the viewfinder are collapsed. Eyepiece window 25, Rewind button 26 for rewinding film halfway, Self button 27 for setting self-timer mode, Automatic flash mode, Pre-flash mode for red-eye reduction, Flash forced flash mode, Stop flash firing A mode selection button 28 that can be switched to a mode or the like is provided. Reference numeral 29 denotes a protrusion caused by providing the magnetic head.

In FIG. 8, a cartridge cover 30 for loading the cartridge C and a cartridge cover button 31 for opening the cartridge cover 30 are provided.

FIG. 9 is a diagram in which the cartridge lid 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 in the figure.

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 stands upright at the center. At the upper right, a photo reflector 34 which is a bar code reading means for reading the bar code of the bar code disk 1 is provided.
The bar code disk 1 is rotated to read the film sensitivity, the number of shot frames and the latitude as described above, and the camera E ²
Store in PROM. A cartridge detection pin, which normally projects into the cartridge chamber 32 by a spring or the like at the lower left, retracts from the cartridge chamber 32 when pressed 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
Reference numeral 35 is provided at a position corresponding to the use state 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. Barcode disk 1 on usage status display window 4 or 5
11 (A) and (B), the cartridge detection pin 35 can be slid and loaded at the edge 1a of the barcode disk 1 as shown in FIGS. 11A and 11B. When you do, Figure 11 (C)
The cartridge detection pin 35 contacts the step 1b of the cartridge C and cannot be loaded.

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

Referring to FIG. 12A, a spool gear 73, which will be described in detail later, is provided on the upper part of the main body 10, and is formed integrally with the spool shaft 33 and rotates. A pulse generating printed circuit board 41 as shown in FIG. 12 (C) is fixed to the upper part of the main body 10, and the tip of the contact piece 42 fixed to the lower part 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 switch pattern serving as a reference position, and outputs the same signal as S _D through an OR circuit as shown in the partial circuit diagram of FIG. _SD 1 to 11 are reference pulse switch patterns for generating reference pulses, and G is 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 cartridge C can be loaded. . That is, after the rewinding of the film is completed and the cartridge C is taken out, a feeding motor described later automatically rotates again in the rewinding direction,
It stops when detecting the ON pattern S _U by the contact piece 42.
At this time, the spool 2 is in the state shown in FIG. The spool 2 of the unused cartridge C and the spool 2 of the partially used cartridge C have a phase of 180 °.
It is shifted so that both can be directly fitted to the spool shaft 33.

At the end of rewinding, the spool shaft 33 is controlled so that the spool 2 of the cartridge C stops at the position indicating each use state. In this control, the number of pulses generated from the pulse generating printed circuit board 41 is controlled. Used. That is,
The number of pulses of _SD is counted from the position of S _U ON, and rewinding is stopped. For example, when an unused cartridge C is loaded, when rewinding without taking a picture: Stops at S _U ON and unused display setting When rewinding without taking all frames: The sixth _SD ON from S _U ON
To stop and set partial use display When rewinding after shooting all frames: The seventh _SD ON from S _U ON
To stop and use display setting When partially used cartridge C is loaded, when rewinding without shooting all frames: Stops at S _U ON Stop when using partially used display When rewinding after shooting all frames: S _U ON First S _D ON
And the used display setting. FIG. 12 (E) shows a timing chart of bar code reading by a pulse generated from the pulse generating printed circuit board 41. A total of 24 times of ON the combined S _U and S _D, OFF
Therefore, even if the rotation speed of the spool shaft 33, that is, the rotation speed of the bar code disk 1 is uneven, the reading timing is secured, and the bar code is not erroneously read.

In FIG. 12F, the reference position switch S
_U also serves as a reference pulse switch _SD , and can be represented as shown in FIG. S _{D1 to} S _D11 are commonly input to the OR circuit, and S _U is also input to S _D through the OR circuit, and is also input to S _U alone. If any of the twelve switches is conducting, _SD is turned on,
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 funder. The view frame is provided with a standard size Hi-Vision size view frame 51, a panorama size view frame 52, and a normal size view frame 53. When the panorama size is selected by pressing the format switching button 18 in FIG. When the display 54 lights in green and the normal size is selected, the normal size display 55 lights in green. When the release button 19 is pressed and the distance is properly measured, the AF mark
When 56 lights up green and the flash is charging or low brightness,
The flash mark 57 lights up in red.

Next, a description will be given of a feeding mechanism in which the film F is pulled out from the cartridge C, wound up 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 feed motor 61 which is a driving source of the film feed is built in a reel 62 around which the film F sent from the cartridge C is wound.
A motor pinion 63 that is directly connected to the rotation shaft of the feed 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. Reel F
At the time of winding up to wind around 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. In the case of rewinding the film F from the reel 62 in the cartridge C, the motor pinion 63 rotates clockwise and the second sun gear 70 rotates counterclockwise. The second planetary lever 71, which carries the third planetary gear 74 meshing therewith, rotates counterclockwise to engage the third planetary gear 74 with the spool gear 73, and rotates 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 carrying the first planetary gear 75 meshing with the first sun gear 66 rotates clockwise when winding up, and the reel gear 77 is rotated by the first planetary gear 75.
To rotate the reel 62 together with the reel gear 77 in the clockwise direction. During rewinding, the first planetary lever 76 rotates counterclockwise, so that 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 rotates clockwise, and the tongue end Fd of the film F is shown. Feed 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 F of the film F is fed.
When d passes through the space between the magnetic head 85 and the camera body, there is a danger that the film F will be deformed near the connecting portion between the spool 2 and the film F due to the feeding load, and stable film feeding will not be possible. is there. Therefore, after the tongue end portion Fd of the film F is sent out, the drive roller 78 is provided for feeding the film to the reel 62, and the feed is performed by this driving force. Therefore, even when the film F passes between the magnetic head 85 and the camera body, stable film feeding is performed without applying an excessive load to the vicinity of the connection between the spool 2 and the film F.

The pressure plate 81 is pressed against the rail surface by a pressure plate spring 82. At approximately the center of the pressure plate 81 in the film feeding direction, a pressure plate roller 83 and a fourth planetary gear 79 which are integrally formed coaxially face each other, and the fourth planetary gear 79 is a fourth planetary lever 80.
And geared with the fourth sun gear 69. The center of the fourth sun gear 69 is provided in the cartridge C direction from 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. Accordingly, the drive roller 78 feeds the film F in the direction of the reel 62 while sandwiching the film F between the pressure plate 81 and the film F. The film feeding speed by the driving roller 78 is set faster than the feeding speed by the spool 2, and the spool gear 73 rotates faster than the peripheral speed of the second planetary gear 72 by the film F. Accordingly, 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. Film F
Since the film is fed by the driving roller 78 even if the sheet F receives the feeding resistance of the pressure plate 81 and the magnetic head 85, the film can be fed without the film F being deformed in the cartridge C.

Of course, the driving roller 78 is provided at one end outside the photographing screen. Also, the driving roller
A pressure plate roller 83 is provided in the pressure plate 81 so as to face the pressure plate 78.

FIG. 14B shows a driving roller during film feeding.
FIG. 7 is an enlarged view of the pressure plate roller 78 and the pressure plate roller 83. A clearance (cl) is set to 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 a manufacturing error.

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

The tongue end Fd of the film F having passed through the pressure plate 81
Passes through the magnetic head 85 and is subsequently wound around the reel 62 by a well-known back cover roller or body roller (not shown). The magnetic head 85 reproduces film information,
Alternatively, at least one of recording of photographing 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 of the reel 62 is set faster than the film feeding speed of the driving roller 78, and the fourth planetary gear 79 is rotated by the film F faster than the peripheral speed of the fourth sun gear 69. Accordingly, the fourth planetary gear 79 rotates clockwise, and the drive roller 78 is separated from the film F.

In this manner, the tongue end Fd of a predetermined length is fed, and when 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. Eye photography becomes possible.

The photographing is performed one frame at a time in this manner.
Since the camera has read in advance and stored the data in the E ² PROM, the feed motor
61 drives 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 engagement between 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 feed motor 61, so that the reel 62 can be rewound. Further, since the fourth sun gear 69 also rotates in the reverse direction, the fourth planetary gear 79 rotates in a 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 is rewound. There is no load of

In the above feeding mechanism, a stopper is 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. Although it is necessary, it is omitted in the figure.

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

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

The camera according to the present embodiment rewinds the loaded film in the middle without photographing all frames when it is desired to use films of different sensitivities.
Since the presence or absence of photographing is recorded on the magnetic track Fe,
It can automatically wind up unexposed pieces. However, as shown in FIG. 15, since the magnetic head 85 is on the reel 62 side from the photographing screen Fa, when it is detected that the frame is an unexposed frame, it is overwound, and the predetermined amount is rewound. Must-have. In this embodiment, in order to secure the positional accuracy of the photographing screen Fa, in the present embodiment, the film is rewound more than a necessary amount and then wound up again to stop 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 up with the film stretched between the first planetary gear 75 and the reel gear
If the meshing of 77 is earlier than the separation 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.
Drives the reel 62 to rotate and wind up the film F,
The spool gear 73 is rotated by the film F via the spool 2 and the spool shaft 33. As a result, the third
Although the planetary gear 74 and the spool gear 73 cannot be disengaged and continue meshing with each other, 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 feed motor 61 stops.

For this purpose, a play joint as shown in FIG. 16 is used. FIG. 16A is a longitudinal sectional view thereof. 1st planetary gear 75
The idle gear 95 is arranged rotatably coaxially with the reel gear 77.
And mesh. A drive pin 75a is erected on the first planetary gear 75, a C-shaped groove 95a is formed in 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. 16B, 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 by almost one rotation. Gear 95 does not rotate until
Only when the drive pin 75a contacts the side wall 95b of the idle gear 95, the idle gear 95 rotates. Therefore, at the initial stage in which the meshing between the third planetary gear 74 and the spool gear 73 is not lost after switching from rewinding to winding, 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 separated. It should be noted that the first planetary gear 75 may be provided with a groove and the idle gear 95 may be provided with a drive pin, contrary to FIG. Further, since the film feeding speed of the reel 62 is faster than the film feeding speed of the spool 2, a play joint is not required for switching from winding to rewinding.

Next, the flow chart of the camera in this embodiment will be described with reference to FIGS. 18 to 29. First, the circuit configuration is shown in the block diagram of FIG.

In FIG. 17, a CPU 50 for controlling each circuit is provided.
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 denotes a barcode reading circuit that reads barcode information by the barcode reading photoreflector 34 and outputs the information. Reference numeral 513 denotes a perforation detection circuit that detects film perforation by the perforation detection photoreflector 91 and outputs the information. 514, a display circuit for displaying information to be displayed on the camera in the LCD 22 and the finder; 515, a flash circuit for emitting a flash from the flash emission unit 12;
516 is a photometric circuit for measuring subject brightness, 517 is a distance measuring circuit for measuring subject distance, 518 is a motor control circuit for controlling motors such as a lens drive motor, a shutter drive motor, and a film feed motor, and 519 is an operation of a shutter. A shutter operation detection circuit for detecting a state; 560, an E ² PROM for storing various operation information; 561, a magnetic reproduction circuit for reproducing magnetic information by the magnetic head 85; 562, a magnetic recording circuit for recording magnetic information by the magnetic head 85 Reference numeral 563 denotes an optical imprinting unit for imprinting 2-bit information on the film by the LED 93.

On the other hand, S ₀ is a main switch operated by the main switch button 23, S ₁ is a release switch operated by the first stage of the release button 19, and S ₂ is a _second switch of the release button 19.
Release switch operating at stage, S ₃ mode selection button 28
Mode switch actuated by, S _B cartridge cover 3
0 cartridge cap switch actuated by opening and closing of the, S _C is the cartridge loading switch for detecting the loading of the cartridge C by the cartridge detection pin 35, S _U is provided on the printed board pulse generator, reference for regulating the position of the spool shaft 33 position switch, S _D is provided on the printed board pulse generator, reference pulse switch for generating a reference pulse, S _a screen size switch for switching the format switching button 18 to the high-vision size and panoramic size and normal size, S _S is self switch, S _R rewind button 26 rewind switch actuated by, date by S ₄ mode button 20, the date and time component, date mode switch for switching the date mode without imprinting or the like that is operated by self-button 27, S ₅ performs the correction of each date character by the date set button 21 Detose Switch.

Next, the operating states of the switches shown in the flowchart are shown in Table 1.

[0056]

[Table 1]

Table 2 shows the names, signs, and operating states of the flags.

[0058]

[Table 2]

Table 3 shows the names and symbols of the RAMs.

[0060]

[Table 3]

First, the main flowchart will be described with reference to FIG.
It will be described based on.

In the flow 601, a reset is applied by loading the battery 510, and the program starts. In 602, the port such as the switch input is reset, and the flag or R
Clear the contents of AM.

Thereafter, at step 603, the flag or R is read from the E ² PROM.
The state before the AM is reset is read. The 604 In the flag F _C is determined whether the cartridge C has been loaded before resetting, processing proceeds to 605 if there. 605 detects the cartridge loading switch S _C In, if not loaded, detects whether the spool shaft 33 is in the initial position 606-608, by rotating a spool shaft 33 of the film feeding motor to be in the initial position , Set to the initial position. In 609 detects the cartridge cap switch S _B. When it is detected that an open, sets the flag F _B at 610. 609
In when it is detected that the lid is closed, the determination of F _B at 611. This is for performing auto loading. At 612, the main switch S ₀ is detected.
, Power off, 1 if 614, power on.

[0064] In 615 detects the opening and closing of the cartridge cap switch S _B, to prevent the subsequent operation, if open.

At 616, the rewind switch S _R is detected, and if the switch is pressed, rewinding is performed halfway only if it is determined at 617 that there is a cartridge C, and no rewinding is performed without the cartridge C. . Release switch S _{1 for} 618
It is determined whether or not is pressed. If it is pressed, photometry and distance measurement are performed at 619, whether or not the photometry result is low luminance is determined at 620, and if the luminance is low, strobe charging is performed at 621.

In step 622, the opening / closing of the cartridge cover 30 is detected.

[0067] detecting the 623 and 624 in the release switch S ₁ and S _2, when the S ₂ is pressed, after focusing by 625,
The exposure is performed by driving the shutter. Optically recording an optical information F _g in the film F in the LED93 by mode which is simultaneously selected at S _A. In 626 the exposure operation is determined whether correctly, a flag F _SE at 627 if not performed, which is then stored in the E ² PROM, fly to an error routine E2. If the exposure operation has been performed correctly, it is detected at 628 whether or not the cartridge C has been loaded. If the exposure operation has not been performed, the cartridge C is returned to its original state. The operation after 629 will be described later in detail.

Next, the auto load routine will be described with reference to FIG.
A description will be given based on the flowchart of FIG. In the main routine 609, the closed state of the cartridge lid 30 is detected.
If it is determined that the lid has been opened just before 11, detects whether the cartridge C is loaded in 639 after resetting the flag F _B at 638, loaded before the cartridge cover is opened by 640 if it is loaded Detect whether it was done.
This is the case when the lid is opened during photographing while the cartridge C is loaded. Here, it is determined by the newly loaded or not a flag F _C successfully autoloading 642 enters the automatic loading routine of the cartridge C and it is determined 641 is performed, the error handling routine if there is an error, If not, set the flag F _C and return.

[0069] sets the flag F _L indicating that at enters the automatic loading routine 711 is being autoloading, E ²
Start feeding at 712 and stored into the PROM, set the bar code reading count to R _DX, sets a timer t ₁ autoloading error detection. Here to set the bar code reading count to 24, the reference pulse switch and consists of twelve patterns 1 lap, ON-O of S _D
This is because if the FF is repeated 24 times, all the barcode blocks can be read in one round.

At 713, the change in the state of _SD is detected, and at 714
In subtract one bar code from the read count R _DX, repeated until R _DX becomes 0 at 717. At the same time, it is detected at 715 whether or not the film tip has passed over the photoreflector 91,
Reset t ₁ timer detect when 716. Detecting whether the film tip ends when 718 reading the bar code is passed, if not detected in t ₁ hour determines that automatic loading error, jumps to an error routine.

In this system, since the first frame is opposed to the photographing frame when feeding is stopped when two perforations are detected during auto loading, the number of perforations to be counted at 720 is 2 To R
Set to _CP , set the number of frames and film sensitivity obtained by the barcode information to _REX , _RISO, and set the flag _FDX indicating that barcode information reading has been completed,
Store in E ² PROM. At 721, the first perforation Fb is detected. Here, if the first perforation Fb cannot be detected within t ₂ within a predetermined time, it is determined that an autoload error has occurred.

When the first perforation Fb is detected
At step 723, R _CP and R _SP are set and stored in the E ² PROM.
In step 4, magnetic information is read.

At 725, it is determined whether the magnetic information has been correctly read. If not, the flow proceeds to the error routine E5. At 726, it is determined whether the loaded cartridge C is unused or partially used based on the magnetic information. Proceeds to 727 if not a partial use, the second perforation Fc within a certain time t ₃
There the detectable, R _SP, R _CP, the feed sets F _L stops at 729, the routine returns after storing the E ² PROM. t ₃
If the second perforation Fc cannot be detected within this time, it is determined that an autoload error has occurred.

Here, t ₁ , t ₂ , and t ₃ will be described in detail. As shown in FIG. 15, the distance from the center of the cartridge C to the photoreflector 91 is a, and the photoreflector 91 is
The distance from the 91 to the center of the reel 62 P ₁ a, the distance from the photo-reflector 91 to the center of the drive roller 78 P ₂ a,
Assuming that the distance from the leading end of the film to the first perforation Fb is r · d and the distance from the first perforation Fb to the second perforation Fc is d, t ₁ ,
As for t ₂ and t ₃ , a time proportional to the ratio of the lengths a, rd, and d may be set according to the feeding speed. However, in this embodiment, since the feed speed of the cartridge C, the feed speed of the drive roller 78, and the winding speed of the reel 62 are different from each other, this speed difference must be considered. Here, cartridge C
Assuming that the feed speed of the roller 62 is v, the feed speed of the drive roller 78 is q ₂ v, and the take-up speed of the reel 62 is q ₁ v, t ₁ , t ₂ , and t ₃
Can be represented as below, and it is desirable to set the time according to each value.

[0075]

(Equation 1)

However, it is not considered that the feeding speed immediately becomes the speed v at the time of the start of the automatic loading, and it is also conceivable that the leading end of the film hardly comes out of the cartridge depending on the rising time of the motor and the state of the film in the cartridge. Therefore, it is more desirable to set t ₁ to be slightly longer than the value obtained by the equation, and to set the longer value to an appropriate value by experiment or the like.

Further, in this embodiment, the magnetic head 85 is provided in the film path, and when the leading end of the film reaches the magnetic head 85 at the time of auto-loading, the film feeding speed may be reduced or the film may stop momentarily. Therefore, it is more desirable that t ₂ be set to be slightly longer than the value obtained by the expression in consideration of this. The longer value may be set to an appropriate value through experiments or the like.

[0078] If it is determined that the portion used in 726 captures the number of frames already shot from the magnetic information 731 to R _ED, and sets the flag F _U indicating that the film is partially used.

At 732, it is determined whether or not the image was shot in the prewind based on the magnetic information. If the image has been shot in prewind, it is possible to shoot from the first frame to one frame before the shot frame. Therefore, the number of frames that can be taken is the total number of frames that can be taken.
-Since the number of captured frames is reached, the flag is set together with the flag at 738, and the second perforation F _C is detected at 739. Here, if the second perforation F _C cannot be detected within t _{3, an} error occurs as in 728.

When the second perforation F _C is correctly detected, the RAM and the flag are set in 741 and 742, the feeding is stopped, the data is written in the E ² PROM, and the routine returns.

When the pre-wind is not performed, the number of photographable frames is the total number of photographed frames−the number of photographed frames. However, since the frames that have not been photographed must be fed, the number of perforations to be counted is calculated as the number of photographed frames. 2 times +1
It is set to R _CP at 733.

In steps 734 to 737, each time perforation is detected, R _SP and R _CP are obtained, and stored in the E ² PROM each time. When R _CP becomes 0, the flow advances to 742 to set a flag and stop feeding. , E ² PROM and return.

If the leading edge of the film or the perforation cannot be detected within the specified time, the process proceeds to an error routine. If automatic loading error is detected, skipping the automatic loading error routine 750 in FIG. 20, sets the flag F _AE, flag F _R1 indicating that the rewinding showing the autoload error 751 to reset the F _L, E ² Store in the PROM and start rewinding.

At 752, if R _SP is not 0, the routine proceeds to 753, where 75
R _SP counts the perforations until the 0 in the 3-755. When R _SP becomes 0, after detecting that the leading edge of the film has passed at 756, wait for a predetermined time at 757, and then wait until the leading edge of the film is caught in the cartridge.
758 return the spool to the state before the loading by detecting the reference position S _U in, reset the F _R1 at 759, E ² PROM
And stop the rewinding. If no perforation is detected within 5 seconds in 753, it is determined that rewinding is abnormal, a flag _FRE indicating a rewinding error is set, and the flow proceeds to 757.

Next, the rewind routine will be described with reference to FIGS. 21 to 23. If the number of remaining frames is 1 in 629 in the main flow, the flow jumps to the rewind routine of 800.

At 801, F _K is set, R _ED and R _CX are calculated, feeding is started, and stored in the E ² PROM. 802
After detecting the first perforation in, magnetic recording is started in 803. When the magnetic recording is completed in 804, the last frame is not detected because there is no second perforation, so the rewinding flag F _R1 is set in 805,
The data is stored in the E ² PROM and rewinding is started.

At 806, it is determined whether or not the cartridge cover 30 was opened during rewinding. When the cartridge cover was opened, rewinding was stopped at 807, and at 808, it was determined whether or not the cartridge cover 30 was closed. At 809, rewinding starts again.

At 810, the first perforation after the start of rewinding is detected. Here, it is conceivable that the perforation cannot be detected immediately due to the sagging of the film or the like, so the error detection time in 811 was set to be longer.

[0089] proceed to the first perforation set the R _SP 812 when it is detected and stored in the E ² PROM 813 at 810. In steps 814 to 825, perforation is detected. 81
In 3, it is determined whether the number of perforations is even or odd. If the number is even, the perforation interval between the screens is short, and if the number is odd, the portion with the long perforation interval on the screen is detected. , 825.

814 to 817 and 820 to 823 determine whether or not the cartridge cover 30 is opened during the detection of perforation during rewinding. When the cartridge cover 30 is opened, rewinding is stopped at 815 and 821, and It is determined at 822 whether or not the cartridge lid 30 has been closed, and if closed, rewinding is started again at 817 and 823.

At 826, R _SP is calculated and stored in the E ² PROM. At 827, it is determined whether or not the number of perforations is zero.

Reference numerals 828 to 829 denote whether or not the cartridge lid 30 was opened during the detection of the leading end of the film.
It is determined whether or not is closed, and if closed, rewinding is started again at 831.

[0093] When the 834 R _SP determines whether 1 While this number of perforations is 1, since the magnetic head to reach the magnetic recording portion of the film tongue blade portion F _d,
Here, magnetic recording is performed. At 835, magnetic recording indicating the end of shooting is performed.

At 832, it is detected whether or not the leading end of the film has passed over the detecting element. At 833, a waiting time of 3 seconds is reached. After the leading end of the film is securely caught in the cartridge C, the display of use is displayed at 841 to 847. The spool 2 is stopped at the used position. First, at 841, a reference position is detected. Since the used position is 210 degrees from the reference position when loaded as an unused film, and 30 degrees when loaded as a partially used film, 842
It is determined whether or not it is unused or partially used at the time of loading, and the number of reference signals to be detected for angle detection is set at 843 and 844.

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

At step 849, the end of rewinding is displayed on the display unit. When the rewinding is completed, the lid of the cartridge chamber is opened, the camera is not operated until the cartridge is taken out, so that it is detected that the cartridge is taken out at 850 to 853, the data is stored in the E ² PROM and the processing is ended.

Next, the case where the intermediate rewind switch is pressed at 616 will be described. When the midway rewind routine is entered at 860, a flag F _R2 indicating that the midway rewind is being performed at 861
Is set and stored in the E ² PROM to start rewinding.

The steps 862-889 perform the same operations as the steps 806-833 of the rewind routine. However, performing recording was performed rewinding middle film tongue blade unit F _d is a magnetic recording at 891. The recorded content may be a rewind in the middle, a normal wind, the number of shot frames, or the like.

When the leading end of the film is completely wound in the cartridge C in 889, the reference position for performing use display is detected in 894. If the film is loaded as a halfway used film when loaded, when the reference position is detected in 893 to perform the halfway use display again, the flow jumps to 848 and stops rewinding as it is. If the film is loaded as an unused film when loaded, it must be rotated 180 degrees from the reference position and then stopped in order to display an intermediate use, so the number of switching of the reference pulse to be detected is R
_When 12 is set in _SD and the signal change is detected 12 times in 896 to 898, jump back to 848 is stopped.

Next, various error routines will be described.

First, the auto load error will be described with reference to FIG. If an auto load error occurs in the auto load routine of 641, the flag F _AE indicating the auto load error is set to 1 and the program jumps to 900 at 642. 901
Then, a warning indicating an auto load error is displayed, and at 902, it is detected whether a rewind error has occurred. 903, 904,
Sensing the release switch S ₁ and the cartridge cap switch S _B. If the release switch S ₁ is detected 907
The warning display is canceled by, the flag is reset by 908, and the auto load is performed again. When it is detected that the cartridge lid 30 has been opened, the warning display is canceled at 905, the flag is reset at 906, and the process returns to the first loop.

Next, the shutter error routine will be described.
It will be explained based on 25. If it is detected in 626 that the exposure is not performed properly, a flag _FSE indicating a shutter error is set in 627, and a jump is made to 910 to display a shutter error warning with 911. Since a shutter error may be caused by the shutter not opening or being left open, the camera does not operate thereafter and the _FSE is reset and returned to the original state by performing repair.

Next, the drawing of the midway strut routine will be described.
Explanation will be given based on 26. At the time of film winding, it is conceivable that perforation cannot be detected within a specified time at 632 or 634. It is conceivable that the cause is caused by an error in reading the specified number of photographed frames when reading bar code information or tongue end magnetic information, or deformation of the film F in the cartridge C. In this case, enters the middle bracing routine 920, a flag F _FE indicating an abnormal wound up at 921, sets the flag F _R1 indicating that it is rewound and stored in the E ² PROM, start rewinding I do. At 922, the first perforation after the start of rewinding is detected. After storing in the E ² PROM is decremented by 1 to R _SP at 924 when the detection is performed, the flow returns to the normal rewind routine. In this case, the fact that the film tongue end has been stretched halfway, the number of frames taken, and the like are recorded, and the spool 2 is stopped at a position where the use display becomes used.

Next, the rewind error routine will be described.
Explanation will be given based on 27. If an error occurs during rewinding and the perforation cannot be detected, a rewind error routine of 930 is entered.

A flag _FRE indicating a rewind error is set at 931, a warning indicating a rewind error is displayed on the display unit at 932, rewinding is stopped at 933, stored in the E ² PROM at 934, and stored at 935. in it resets the flag F _RE 936 detects that the cartridge C has been removed is returning to the original, the fact if the rewinding is stopped halfway, because the film remains out of the cartridge C , The cartridge C cannot be taken out. For this reason, when a rewind error occurs, the camera back cover is opened and the film is taken out.

Next, a magnetic recording / reproducing error routine will be described with reference to FIG. At the time of auto loading, magnetic information at the tongue end of the film is read at 724, but 72
If it cannot be read in step 5, it jumps to the 940 magnetic recording / reproducing error routine. In this camera, it is not possible to determine whether the loaded cartridge C is unused or partially used at the time of loading. Since the partial use is determined by reading the magnetic information at the tongue end, magnetic information can be read. If not, use of the cartridge C is prohibited to prevent double exposure of the partially used film. However, in order to prevent photographing from becoming impossible due to a temporary reproduction error, a flag F _ME indicating that there is a magnetic reading error is set in 941, stored in the E ² PROM, and temporarily before the first perforation Fb. rewind until, F _ME reset 945 and 946 after performing time waiting at 944, after storage, perform hoisting again, to read the magnetic information again 950 after detecting the passage of Paforeyon at 947. Although will return from 951 if successful where the reading of the information based on, a warning display of the magnetic information reading failed at 952 if it fails, 953 in F _ME
Is set again, stored in the E ² PROM, and then the film is rewound. Then, after the leading end of the film is completely wound into the cartridge C in steps 954 to 957, the reference position is detected in step 959 to return the use display to the state before loading, and the rewinding is stopped in step 960. The magnetic recording / reproducing section is an indispensable part for discriminating the partially used film.If the magnetic information cannot be read, a double exposure accident of the partially used film may occur. Thereafter, the operation of the camera is not performed. In this case, it will not return until repair is performed. If the perforations are not detected within the specified time in 943, 948, and 955, the processing jumps to each error routine.

Finally, the initial determination routine will be described with reference to FIG. If the battery 510 is disconnected during camera operation, is reset to the microcomputer, returns to 601 in the main flow, flag E ² PROM, the contents of the RAM is stored, reads the contents of the E ² PROM in 603 Is done.
If the cartridge C is loaded before the battery 510 is removed, the process jumps from 604 to the initial determination routine.

At 971, it is determined from the flag whether or not the automatic loading is being performed. At 980, it is determined whether or not the barcode information has been read. If not, the film is rewound once at 981, waited for 3 seconds to ensure that the film is rewound at 982, and then re-started again. Return to the auto load routine to load.

In step 983, the number of perforations detected after the start of auto loading is checked. This is for reading the magnetic information of the film after detecting one perforation. If the perforation has not been detected yet, the process proceeds to 984 to start the film feeding and return to the auto load routine. If it is determined in 983 that perforation has already been detected, the battery 510 is read during magnetic information reading.
, The film is rewound to just before perforation at 985-987, the film feed is started again at 988, and the routine returns to the auto load routine.

At 972, it is detected whether or not an auto load error has occurred. If so, the process jumps to an auto load error routine. In 973, it is determined whether or not the sheet is being fed. If the sheet is being fed, the flow advances to 989 to determine whether or not the number of perforations to be counted is two. If it is 2, the first perforation has not been detected yet, so feeding is started at 989 and the process returns to the main flow. If the number of perforations to count is not 2, it means that it was in the middle of magnetic recording, so rewind to just before the first perforation in 990 to 992, then feed again in 993, return to the main flow Then, magnetic recording is performed again.

At 974, it is determined whether or not rewinding is being performed. If rewinding is in progress, rewinding starts at 994. 995 measures the number of perforations from the leading edge of the film.
If this number is 0, only the leading edge of the film is detected thereafter, and if it is not 0, the remaining perforations have to be detected. Therefore, the place to return to the rewind routine is different. In 975, it is determined whether or not rewinding was in progress. However, it is the same as 994 and 995, except that the place of return is different.

At 976 to 978, it is determined whether or not there is a shutter error, an auto load error, and a rewind error. If detected, the process proceeds to each routine. In 979, it is determined whether there is a magnetic reading error. If there is an error go to 998, 9
If it is determined in 98 that rewinding is in progress, rewinding starts in 999 and returns to the error routine. If the flag is not detected until 979, it is determined that the camera is not operating before the battery 510 is removed, and the process returns to the standby state of the main routine.

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. Polyethylene naphthalate has a characteristic of emitting fluorescence mainly in response to ultraviolet rays of 220 to 380 nm. Accordingly, the ultraviolet light received at the time of photographing causes the fluorescence from the film base to continue even after the shutter is closed and before the film development, so that fog occurs even if the amount of received ultraviolet light is small and the amount of the fluorescence is very small.

For this purpose, a photographic lens having an optical component formed of at least a material that does not transmit ultraviolet light may be used. That is, PMMA (polymethyl methacrylate) which is a plastic material, SF-based glass, or L
What is necessary is just to form an optical system having at least one optical component made of aSF glass. In addition, in order to expand the degree of freedom of the configuration of the optical system, and to increase the efficiency of ultraviolet cut,
The UV cut coating may be used in combination with an optical component made of the above material, or may be applied to an optical component made of another material. In particular, PMMA cuts ultraviolet rays of 380 nm or less and has good moldability, so it can process aspherical lenses, etc.
It is most preferable as a material used for an optical system.

[0115] Figure 30 is a diagram of the imaging lens used in the present embodiment, the first lens L ₁ as materials used LaF01
0, so the second lens L ₂ is SFL6, third lens L ₃ is LaF
05, the fourth lens L ₄ are used PMMA. Accordingly, the photographing lens is prevented by the second lens L ₂ and the fourth lens L _4, the transmission of ultraviolet light.

Next, the reading means for reading the information on the bar code disk of the camera of the present invention will be described.

FIGS. 31 and 32 are views for explaining an embodiment of the present invention.

FIG. 31 is a top sectional view of the cartridge chamber 32 and the cartridge C showing an embodiment of the reading means of the present invention.

In FIG. 31, a bar code disk 1 in which film information is described by a bar code in a black and white pattern as described above is provided on the upper part of the cartridge C. And fitted so that it can rotate. The cartridge C is inserted into the cartridge chamber 32 as shown in the figure. The insertion into the cartridge chamber 32 is as described with reference to FIG.

[0120] photo-reflector 34 is a reading means for reading the bar code of the bar code disk 1, the wall 101 facing the bar code window 3 provided in the cap C ₁ to cover the bar code disk 1 of the main body 10 of the camera The bar code is more protrudingly mounted, and reads the bar code from the bar code window 3 above the cartridge C inserted into the cartridge chamber 32.

FIG. 31A is a view in which the photoreflector 34 is attached to the wall surface 101 of the main body 10 on which the photoreflector 34 is mounted so as to protrude from the wall surface 101. FIG.
(B) shows a photo reflector in the bar code window 3.
FIG. 31 (C) shows a view in which the photoreflector 34 projects into the barcode window 3 including the projecting portion of the wall of the main body to which the barcode 34 is attached.

The photo reflector 34 is a light emitting element 34
1 and the light receiving element 342, and light in the direction of the arrow from the light emitting element 341 is reflected by the surface of the barcode disk 1 and incident on the light receiving element 342 as shown by the arrow as shown in FIG. The information will be read.

Barcode disk 1 constructed as described above
Reflector as reading means for reading information
The distance between 34 and the surface of the barcode disk 1 is preferably 0.3 mm to 1.2 mm, most preferably 0.7 mm.

That is, the distance between the surface of the barcode disk 1 and the photoreflector 34 greatly affects the reliability of reading by the photoreflector 34 as reading means.
If the intervals are not proper, the output of the photoreflector 34 will decrease, and the reliability will decrease. Therefore, it is preferable that the photoreflector 34 be as close as possible to the surface of the barcode disk 1. Therefore, it is very preferable to mount the photoreflector 34 so as to protrude into the barcode window 3. However, if the photoreflector 34 is too close to the surface of the barcode disk 1, the light reflected from the light-emitting element 341 of the photoreflector 34 to the light-receiving element 342 is rather reduced, and there is a limit. Is the limit.

Accordingly, the distance between the photoreflector 34 and the surface of the barcode disk 1 is preferably 0.3 mm to 1.2 mm, and most preferably 0.7 mm, and the best result has been obtained.

Further, the cartridge C has an exit of the film, and there is a fear that the film may be covered by unnecessary light from the light emitting portion of the light emitting element 341. Therefore, by inserting the light emitting element portion into the barcode window 3 of the cartridge C, it is possible to prevent unnecessary light from the light emitting portion of the light emitting element 341 from leaking to the film outlet of the cartridge C.

The photoreflector 34 or the photoreflector 34 that enters the barcode window 3 of the cartridge C
By making the size of the protruding portion of the wall surface 101 to which the 34 is attached close to the size of the barcode window 3, the photoreflector 34 or the protruding portion to which the photoreflector 34 is attached can be used as the positioning of the cartridge C.

As can be seen from the above description, the structure of the present invention is very simple, and a great effect can be obtained with little cost and space.

Next, FIG. 32 is a view for explaining another embodiment of the bar code reading means of the present invention.

In FIGS. 32A and 32B, FIGS. 32A and 32B are views of a conventional photoreflector, where FIG. 32A is a front view and FIG. 32B is a side view. FIGS. 32C and 32D are views of the photoreflector of the present invention, wherein FIG. 32C is a front view and FIG. 32D is a side view.

FIGS. 32A and 32B are diagrams of the conventional photoreflector as described above. In this case, the distance between the light emitting element 341 and the light receiving element 342 of the photoreflector 34 and the bar code disk 1 is always constant. If the intervals are not appropriate, the reading reliability of the photoreflector 34 will be reduced as described above.

The bar code reading means shown in FIGS. 32 (C) and 32 (D) is a reading means in which a photo reflector and a lens which is an optical system are combined. The photo reflector 34 is composed of a combination of a light emitting element 341 and a light receiving element 342, and lenses 341L and 342L are arranged in an optical path between the light emitting element 341 and the light receiving element 342. The lens in the optical path is provided with a lens on at least one or both of the light emitting side of the light emitting element 341 and the light receiving side of the light receiving element 342. It is provided.

The photoreflector 34, which is a barcode reading means configured as described above, irradiates the surface of the barcode disk 1 with the light of the light emitting element 341 converged by the lens 341L. The reflected light is focused by the lens 342L and enters the light receiving element 342. Therefore, the bar code can be read effectively with less loss of light, and the reliability of reading by the photo reflector 34 is greatly improved.

FIG. 33 shows a photoreflector 34 in which a lens which is an optical system is provided in the optical path.
(A) is a diagram in an ideal state, (B)
Is a view without a lens, (C) is a view with a lens, and a dotted line indicates a case where the barcode disk has undergone rotational fluctuation.

By arranging the lens in the optical path between the light emitting element and the light receiving element, the resolution of the photoreflector 34 is improved, and the output waveform obtained by reading the bar code is shown in FIG.
As shown in FIG. 33 (C), the rise is improved, and the waveform is less likely to be distorted even if the rotation speed of the barcode disk 1 slightly fluctuates. That is, the reading of the barcode by the photoreflector 34 is less likely to be affected by the fluctuation of the rotation speed of the barcode disk 1, and the barcode can be read more reliably. The lens is located on the light emitting element 341 side or the light receiving element 342.
A sufficient effect can be exerted even if only the side is used.

As can be seen from the above description, the structure of the present invention is very simple, so that a great effect can be obtained at low cost and in a very small space.

[0137]

According to the present invention, a camera having a photoreflector capable of reading information on a barcode disk which rotates integrally with the spool of a film cartridge with high reliability, at low cost and with a small space. Will be provided.

[Brief description of the drawings]

FIG. 1 is a front view in which a film is drawn from a cartridge.

FIG. 2 is a plan view of the cartridge.

FIG. 3 is a diagram of a barcode disk.

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

FIG. 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.

FIG. 8 is a bottom view of the camera.

FIG. 9 is a diagram showing a cartridge dropped into a cartridge chamber.

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

FIG. 11 is a diagram illustrating the operation of a cartridge and a 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 block diagram of a camera.

FIG. 18 is a main flowchart.

FIG. 19 is a flowchart of an auto load routine.

FIG. 20 is a flowchart of an auto load error routine.

FIG. 21 is a flowchart of a rewind routine.

FIG. 22 is a flowchart of a rewind routine.

FIG. 23 is a flowchart of a rewind routine.

FIG. 24 is a flowchart of an auto load error routine.

FIG. 25 is a flowchart of a shutter error routine.

FIG. 26 is a flowchart of a midway strut routine.

FIG. 27 is a flowchart of a rewind error routine.

FIG. 28 is a flowchart of a magnetic recording / reproducing error routine.

FIG. 29 is a flowchart of an initial determination routine.

FIG. 30 is a diagram of a photographic lens used in the present example.

FIG. 31 is a cross-sectional view of bar code reading means.

FIG. 32 is a diagram illustrating another embodiment of a barcode reading unit.

FIG. 33 is a diagram showing an output waveform of a photo reflector.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Bar code disk 101 Wall surface 3 Bar code window 34 Photoreflector 341 Light emitting element 341L, 342L Lens 342 Light receiving element C ₁ cap

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-6-51448 (JP, A) JP-A-4-316029 (JP, A) JP-A-7-159891 (JP, A) JP-A-63-1988 284531 (JP, A) JP-A-4-316027 (JP, A) JP-A-61-44635 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) G03B 7/00-7 / 28 G03B 17/00

Claims (2)

(57) [Claims] 1. A film cartridge according to claim 1, wherein said film cartridge fills information of a bar code disk provided on said film cartridge and rotated integrally with a spool of said film cartridge.
A photo sensor comprising a combination of a light emitting element and a light receiving element in a camera which can be optically read through a window provided in the film cartridge when loaded in the film cartridge chamber.
Face the window provided in the film cartridge
Through a hole in the film cartridge chamber provided at
And project from the inner wall surface of the film cartridge chamber.
Camera, characterized in that provided Te. And a film cartridge provided in the film cartridge.
Bar that rotates integrally with the spool of the film cartridge
The film cartridge fills the code disk information.
When the film cartridge is loaded in the
A camera that can be read optically from the window provided in the ridge
A photoelectric sensor composed of a combination of a light emitting element and a light receiving element.
Project into the window provided in the film cartridge.
So that it protrudes from the inner wall of the film cartridge chamber.
A camera characterized by being put out.