JP3435963B2 - 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 for loading a film cartridge according to a novel system and taking a picture.

[0002]

2. Description of the Related Art A conventional camera has a back cover that can be opened and closed in a camera body, and a film cartridge can be loaded in the back cover.
This is done by opening the back cover, loading the film cartridge into the camera body, manually pulling out the leading end of the film to the spool, and then closing the back cover. Then, when the filming is completed and the film is rewound, the film is completely stored in the film cartridge. Therefore, it is impossible to rewind a film shot halfway and use it again for shooting.

[0003]

On the other hand, a new film cartridge, for example, US Pat. No. 5,347,3.
The one disclosed in Japanese Patent No. 34 is provided with a light-shielding door that is openably and closably provided at a film outlet, whereby a film is rewound once in a partially exposed state in which a frame in the middle is photographed and partially exposed. Can be taken out and then used again for shooting.

The above new film cartridge is
It has a data disc on which information about the film is recorded in a bar code format, and a display disc for the user to visually recognize the usage state of the film. The data disc and the display disc are fixed to both ends of the spool of the film cartridge and are rotatable together with the spool. The display disc is unexposed, partially exposed, or exposed depending on its rotation stop position. The completed and developed images are displayed in a distinguishable manner.

The above new film cartridge is
A lock mechanism is provided to prevent the spool from rotating when the light-shielding door is closed, so that the display disc is prevented from rotating and the display position of the used state of the film is not changed. .

Therefore, in the camera corresponding to the new film cartridge, it is necessary to consider that the rotation stop position of the display disk does not change before the light blocking door is closed and the spool is locked.

The present invention has been made in view of the above,
An object of the present invention is to provide a camera that accurately displays the use state of film on a display disk of a film cartridge.

[0008]

SUMMARY OF THE INVENTION The present invention is directed to a film contained in a cartridge having a status display means for displaying information on the usage status of the film according to a rotation stop position of a display disk which rotates integrally with a spool. And a drive source for rewinding a film to the cartridge by applying a rotational drive force to the spool, and a drive source that is interposed between the spool and the drive source and is separably connected. From the connection means for transmitting the rotational driving force to the spool, and after the film is rewound and the connection means is once in the separated state, the spool is moved to the display disk according to the usage state of the film. And a rotation control means for rotating it until it coincides with the position.

According to this structure, the drive source and the spool are connected, the rotational drive force is transmitted from the drive source to the spool, and the film is rewound into the cartridge. After the film is rewound, the connection between the drive source and the spool is once disconnected by the connecting means. Since the spool is freed by disconnecting this connection, the film wound on the spool is loosened by rewinding. After that, the drive source and the spool are connected again, and the spool is rotated until the display disk coincides with the position according to the usage state of the film. This prevents the rotation stop position of the display disc from varying due to the looseness of the film wound around the spool.

The present invention further includes a winding spool, a second connecting means, and a switching means, and the drive source further applies a rotational driving force to the winding spool to load the film on the winding spool. Is to be wound up into
The second connecting means is interposed between the drive source and the winding spool, and is detachably connected to transmit the rotational driving force from the drive source to the winding spool, and the switching means. May switch between connection by the connecting means and connection by the second connecting means. According to this configuration, it is possible to wind and rewind the film with a single drive source.

A loading chamber for loading the above cartridge
Equipped with an eject switch to open the cover of
The rotation control means turns on the eject switch.
The spool is filled with the display disc.
Rotate until it matches the position according to the usage condition of the
It may be.

According to this structure, the eject switch is
Set the display disc in place after it is turned on
Therefore, with the display disc set in the correct position,
You can remove the cartridge.

A loading chamber for loading the above cartridge
Equipped with an eject switch to open the cover of
The rotation control means turns on the eject switch.
The spool is filled with the display disc.
Rotate until it matches the position according to the usage condition of the
Since, the switching means, the eject switch is on-
When it is turned on, the connection from the second connecting means becomes
Even if it switches to the connection by the connecting means
Yes.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a camera according to the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a film cartridge used in this camera, and FIG. 2 is a perspective view of the film cartridge in an upside down state.

In this film cartridge, the film 22 is completely contained in the film cartridge 21. The film cartridge 21 has a cylindrical shape having an upper plate 113 and a bottom plate 114, and a film pull-out portion 115 is projectingly provided on a side surface parallel to the axis.
The film outlet 116 is provided on the tip side surface of the
A rotary shading door 117 is provided at the film outlet 116.

The upper plate 113 of the film cartridge 21
Has a round hole 121 formed at the center of the shaft, a keyhole 122 provided at the tip of the film pull-out portion 115, and a notch 123 formed in a fan shape at an appropriate position on the peripheral edge. On the other hand, the bottom plate 114 of the film cartridge 21 is
A round hole 131 formed at the center of the shaft and the film pull-out portion 11
5 and the keyhole 132 provided at the tip end of the No. 5 and having a constant interval on the same radius, respectively, ○ shape, half moon shape, ×
Apertures 133, 134, 1 for allowing the photographer to visually recognize the usage state of the film 22 stored in the film cartridge 21.
35 and 136.

At the axial center of the film cartridge 21,
A cartridge spool 141 for feeding and rewinding the film 22 is rotatably provided. A groove 141a is formed in the cartridge spool 141. Also, this cartridge spool 141
A data disk 142, which will be described later, is fixed on the upper surface side, and a display disk 143 is fixed on the lower surface side. The data disk 142 and the display disk 143 are adapted to rotate integrally with the cartridge spool 141.

As shown by the broken line in FIG. 2, the display disk 143 is divided into a wide-angle sector 143a and a narrow-angle sector 143b by different colors, and the wide-angle sector 143a is black and narrow. The fan-shaped portions 143b are colored white. As for the central angle of the narrow-angle fan-shaped portion 143b, the narrow-angle fan-shaped portion 143b has the opening portions 133, 134,
An angle that does not cover two adjacent openings of 135 and 136 at the same time (90 ° or less in this embodiment)
Is set to.

When the film 22 accommodated in the film cartridge 21 is unused, that is, when it is not exposed, the narrow-angle fan-shaped portion 143b faces the opening 133, and the photograph is taken halfway, that is, partially exposed. , The narrow-angle fan-shaped portion 143b faces the opening 134, the narrow-angle fan-shaped portion 143b faces the opening 135 when exposed to the final frame, and the narrow-angle fan-shaped portion 143b when developed.
The phase of the rotation stop position is set so that the arrow mark faces the opening 136. FIG. 2 shows that the film 22 is unexposed.

The film cartridge 21 is also provided with a lock mechanism (not shown) that locks the cartridge spool 141 in conjunction with the closing of the film outlet 116 by the light shielding door 117 to prevent its rotation. This lock mechanism prevents the rotation stop position of the display disk 143 from being deviated and erroneously recognizing the usage state of the film 22. While the light shielding door 117 is open and the film outlet 116 is open, the cartridge spool 1 is locked by the lock mechanism.
It is configured so that 41 is not locked.

FIG. 3 is a plan view showing a radial bar code recorded on the data disk 142.

The data disk 142 is divided into a black area BZ in which the entire surface is black and a code area CD in which predetermined information is coded. The black area BZ has a relatively wide angle and is for detecting the start position of the code area CD. Code area CD
Records information on film speed and color / black and white or negative / positive discrimination with a combination of bars and spaces. The area CD2 of the code areas CD is 3 in total.
A code relating to the number of films is recorded by the combination of the bar and the space of the book.

FIG. 4 is a view showing the structure of the film 22.

The film 22 is composed of three regions including a leader portion 22a, an exposure portion 22b, and an end portion (not shown) from the top (the left end in FIG. 4). The leader portion 22a is a lead portion for pulling out the film 22 from the film cartridge 21, the exposure portion 22b is a region where a predetermined number of photographs are photographed at a predetermined pitch, and the end portion is the exposure portion 2
This is an area for pulling out the film 22 from the film cartridge 21 by a predetermined size or more so as to enable photographing of the final frame of 2b.

One side edge in the width direction of the film 22 (in FIG. 4,
On the upper side), rectangular perforations 41 and 42 of the same shape are regularly formed in pairs along the side edges, and a piece 43 for photographing is provided between the perforations 41 and 42. There is. This perforation 4
Reference numeral 1 is for a stop position reference in winding the film 22, and perforation 42 is for a disposition position reference of the frame 43 and magnetic recording portions 44 and 45 described later.

The dimension of the perforations 41 and 42 in the winding direction is set to d0, and the interval between the adjacent perforations 41 is set to the dimension d1.
And the distance between the perforation 42 and the dimension d2 (however,
It is set to d2 <d1-d2).

Further, a reader magnetic recording section 44 and a plurality of frame magnetic recording sections 45 are provided on the other side edge portion (lower side in FIG. 4) of the film 22 in the width direction. The reader magnetic recording section 44 is provided in the reader section 22a and is an area for recording a title corresponding to the entire film and top-and-bottom information for perforation of a photographed photograph.

The frame magnetic recording unit 45 includes the exposure unit 2
It is provided adjacent to the frame 43 of 2b in the film width direction, the shooting date, the shooting screen (portrait / horizontal), the exposure control value, the shooting magnification, the angle of view, the light source, the number of prints, etc. regarding the photograph taken on the frame 43 Is for recording the predetermined information.

The areas of the reader magnetic recording section 44 and the frame magnetic recording section 45 are set by the dimension from the right end of the perforation 42. That is, the front end of the reader magnetic recording unit 44 has a dimension d3 from the right end of the leading perforation 42, and the rear end has a dimension d4. In addition, the front end of the frame magnetic recording unit 45 is connected to each of the perforations 4
2 has a dimension d5 from the right end and a dimension d6 from the rear end.

FIG. 5 is a schematic configuration diagram of the inside of the camera body as seen from the top side, FIG. 6 is a schematic configuration diagram of the inside of the camera body as seen from the back side, and FIG. 7 is a configuration diagram showing the drive system of this camera.

As shown in FIG. 5, the camera body 11 has a photographic lens section 12 having a photographic lens (not shown) arranged in the center, and a cartridge loading chamber arranged on the right side of the photographic lens section 12. 13 and this cartridge loading chamber 13
A motor 14 disposed on the right side as a drive source for film feeding, a film winding chamber 15 disposed on the left side of the taking lens section 12, and an optical axis rear side of the taking lens section 12. It is provided with an exposure frame 16 and a perforation sensor (hereinafter referred to as PS) 17 provided, and a battery storage chamber 19 for storing a battery 18 arranged at the right end portion.

The cartridge loading chamber 13 is for loading the film cartridge 21, and is configured such that the opening is closed by a loading chamber cover 26 (FIG. 10), and the light shielding door 117 is provided inside. The opening / closing key 13a (FIG. 7) for opening and closing the cartridge spool 141, the drive key 13b (FIG. 7) for engaging the groove 141a of the cartridge spool 141 to rotate the cartridge spool 141, and the loading chamber cover 26 are opened. An eject portion 13c is provided for ejecting the film cartridge 21 to a position where the film cartridge 21 can be taken out by a substantially eject lever.

Further, as shown in FIG. 5, the cartridge loading chamber 13 is provided with a code reading sensor 2 arranged at an upper portion thereof.
It has 0. The code reading sensor 20 is composed of a reflection type optical sensor or the like, is arranged at a position facing the notch 123 when the film cartridge 21 is loaded, and reads the bar code on the data disk 142.

The film winding chamber 15 is provided with a winding spool 24 for winding a film, and a cylindrical film retainer 25 which is arranged in contact with the peripheral surface of the winding spool 24 at a required pressure. There is. As shown in FIG. 7, the winding spool 24 has a cylindrical shape and is rotatably disposed in the film winding chamber 15.

As shown in FIG. 6, the exposure frame 16 is a horizontally long frame body and has an exposure window 26 formed on the optical axis of the taking lens unit 12 (FIG. 5). The exposure window 26 has a rectangular shape with a predetermined aspect ratio, and controls the exposure area of the film.

The PS 17 is composed of a reflection type or transmission type optical sensor or the like, and detects the perforations 41 and 42 (FIG. 4) formed in the film to control the feeding of the film. The location of the PS 17 will be described later.

The motor shaft 14a of the motor 14 is shown in FIG.
As shown in FIG. 5, the eject gear device 31, the rewinding gear device 32, the door opening / closing gear device 33, the initial load gear device 34, and the hoisting gear device 35 can be connected via the rotary cam switching unit 30, respectively. The eject gear device 31 is connected to the eject portion 13c, the rewinding gear device 32 is connected to the drive key 13b, the door opening / closing gear device 33 is connected to the opening / closing key 13a, and the initial load gear device 34 is the drive key 13b and the winding. The winding gear device 35 is connected to the spool 24, and the winding gear device 35 is connected to the winding spool 24. Each of the gear devices 31 to 35 is composed of a gear or the like connected so as to be capable of rotating in the forward and reverse directions, and decelerates the rotational driving force of the motor 14 at a predetermined speed reduction ratio and transmits the rotational driving force to each connected part.

The rotary cam switching section 30 is provided for the motor shaft 14
a is composed of a cam gear or the like connected to the motor shaft via a one-way clutch (not shown).
The connection between a and the gear devices 31 to 35 is switched.

As shown in FIG. 7, a motor rotation amount sensor 37 is attached to the motor shaft 14a. The motor rotation amount sensor 37 is a pulse composed of a disk 38 having detection pieces protruding outward from the peripheral edge at regular intervals in the circumferential direction, and a reflection-type or transmission-type optical sensor 39 for detecting passage of the detection pieces. The encoder is configured to detect the rotation amount of the motor 14.

The motor rotation amount sensor 37 may be composed of a disc having slits formed at regular intervals in the circumferential direction and a pulse encoder composed of an optical sensor for detecting passage of the slits.

Further, as shown in FIG. 6, the camera body 11 is provided with a magnetic head 36 arranged on the lower left side of the exposure window 26. As shown in FIG. 7, the magnetic head 36 is arranged facing the film 22 and under the PS 17 at a height position where the magnetic recording portions 44 and 45 pass, and records magnetic data. . Also, the magnetic head 3
6 reads the magnetic data recorded in the magnetic recording units 44 and 45.

The camera body 11 includes a magnetic head 36.
Of the magnetic head 3 between the recording / reproducing position where the head surface of the recording medium is in contact with or close to the surface of the film 22 and the retracted position where the recording / reproducing position is separated.
An unillustrated moving means for moving 6 is provided, and the magnetic head 36 is arranged at the recording / reproducing position only when recording and reading magnetic data.

Next, referring to FIGS. 6 and 8, the PS17
The arrangement position of will be described. FIG. 8 is a schematic configuration diagram of the inside of the camera body viewed from the back side, and shows the state in which the film 22 is in the photographing position.

As shown in FIG. 8, the PS 17 is at a height position where the passage of the perforations 41 and 42 can be detected, and as shown in FIG. 6, its detection point is the exposure window 2
It is arranged at a position of dimension d7 in the film winding direction with respect to the center line of 6.

Then, as shown in FIG. 8, the detection point of the PS 17 is located in the middle of the perforations 41 and 42 when the frame of the film 22 is in the photographing position. By detecting the edge of the perforation 41 by the PS 17, the feeding stop control in feeding one frame of the film 22 at the time of photographing is performed.

FIG. 9 is a block diagram showing the control system of the camera, FIG. 10 is a rear view of the camera body, and FIG. 11 is a right side view of the camera body.

The motor driver 51 supplies a drive current to the motor 14, and when the rotation of the motor 14 is stopped, it can be stopped in a short time by applying reverse energization braking. The motor driver 51 also enables short-circuit braking that is performed by short-circuiting both ends of the motor 14 depending on conditions, and motor stop control that combines natural braking performed by disconnecting both ends of the motor 14.

The magnetic head driver 52 is used for the magnetic head 3
By supplying an electric current to the magnetic recording medium 6 on and off,
4 and 45 record data, and the supply current is controlled by the controller 60. Further, when the magnetic data is read by the magnetic head 36, the magnetic data is magnetically picked up and sent to the control unit 60.

That is, when reading the magnetic data, the magnetic field generated between the gaps of the magnetic head 36 is changed by feeding the film 22 and the magnetic data recorded in the magnetic recording sections 44 and 45 changes the magnetic flux. A voltage proportional to the rate is induced in the internal coil, this induced voltage is sent to the control unit 60, and the level of the induced voltage is detected.

The photometric distance measuring section 53 measures the subject brightness and the subject distance, and the exposure section 54 exposes the film using the measurement result of the photometric distance measuring section 53. The display unit 55 is composed of an LCD panel or the like, and is disposed in the substantially central portion of the back surface of the camera body 11 as shown in FIG. 10, and is a film counter stored in a RAM 62 described later, whether or not a film is loaded, and various data. Is displayed.

EEPROM (Electrically Erasable and
The Programmable ROM) 56 is an electrically rewritable nonvolatile memory. The cam position sensor 57 is a connection position of the motor shaft 14a of the rotary cam switching unit 30 and each gear device 31 to 35, that is, an eject position 57a, a rewinding position 57b, a door opening / closing position 57c, and an initial loading position 57.
The gear devices respectively arranged at the d and the winding position 57e and connected to the motor shaft 14a are the eject gear device 31, the rewinding gear device 32, the door opening / closing gear device 33, the initial load gear device 34, and the winding gear device 35. Which is detected. Sensor driver 5
Reference numeral 8 supplies power to the LEDs of the PS 17 and the code reading sensor 20.

The control unit 60 is composed of a ROM 61, a RAM 62, a microcomputer having a timer function, and the like, and controls the operation of the camera as shown in the flow charts of FIGS. RAM6
Reference numeral 2 is a temporary storage for various data, and includes a data on the data disk 142 read by the code reading sensor 20, a film counter showing the number of frames of the film, and a spool rotation counter showing the number of rotations of the cartridge spool 141. Remember. The ROM 61 stores the control program and also stores the number of revolutions of the cartridge spool 141 and various set values necessary for rewinding the film wound up to the last frame (40 frames in this embodiment) into the film cartridge 21. It is something to remember.

The control unit 60 also includes a cam position sensor 57.
The switching of the gear devices 31 to 35 connected to the motor 14 is controlled by using the detection signal from.

Further, the control unit 60 sets the information to EEPR at the start and end of winding and rewinding of the film 22.
Store in OM56. With this, when the battery 18 is newly loaded, it is possible to determine whether or not the film was being fed when the previous battery was removed.
A feeding flag is provided in the EEPROM 56, the feeding flag is set at the start of winding and rewinding, and the feeding flag is reset at the end of winding and rewinding. You may read it.

The control unit 60 also includes a sensor driver 58.
According to the signal level input from the phototransistor of the PS17 and the code reading sensor 20 during the power supply to the LEDs of the PS17 and the code reading sensor 20 by
The perforations 41 and 42 are detected and the data of the data disk 142 is read.

The control unit 60 also controls the P
The first rewinding mode in which the rewinding of the film 22 is controlled by detecting the perforations 41 and 42 in S17, and the data disc 14 is read by the code reading sensor 20.
By reading "2", the switching to the second rewinding mode for controlling the rewinding of the film 22 is controlled.

Further, in the first rewinding mode, the control section 60 causes the display section 55 to display the numerical value of the film counter stored in the RAM 62. In addition, the second
In the rewinding mode, the numerical value of the spool rotation counter stored in the RAM 62 together with the “+” symbol is displayed on the display unit 55.
To display. With this, it is possible to notify the user in a distinguishable manner of the first rewind mode or the second rewind mode.

The control unit 60 also includes a main switch SMAIN, a release switch SREL, and an eject switch S.
The EJCT and the film switch SFLM are connected, and the control unit 60 controls the operation of each unit based on the state of each switch.

As shown in FIG. 10, the main switch SMAIN is arranged in the upper center of the rear side of the camera body 11 to permit or prohibit the photographing operation.
As shown in FIG. 10, the release switch SREL is arranged at the right end of the upper surface of the camera body 11 and is for performing a photographing operation.

The eject switch SEJCT shown in FIG.
As shown in FIG. 3, it is provided in the lower portion of the right side surface of the camera body 11, and is for opening the loading chamber cover 26 for taking out or loading the film cartridge 21.

The film switch SFLM is for detecting the presence or absence of the film cartridge 21 in the cartridge loading chamber 13, and is set to be turned on when there is no film cartridge 21 and turned off when there is one.

The display on the display unit 55 in the second rewinding mode is not limited to the "+" sign as long as it is a display that can be distinguished from the first rewinding mode. Even if other symbols or characters are used, it is possible to display only that the rewinding is being performed and not display the numerical value.

Next, the operation of the camera having the above structure will be described.

When the film cartridge 21 is loaded in the cartridge loading chamber 13, the motor 14 is connected to the door opening / closing gear device 33, and the opening / closing key 13a is moved to the keyhole 12 described above.
2 and the open / close key 13a rotates to open the light blocking door 117, and the lock of the cartridge spool 141 by the lock mechanism is released.

Further, the drive key 13b provided inside is engaged with the groove portion 141a of the cartridge spool 141. Since the positional relationship between the data disk 142 and the narrow-angle fan-shaped portion 143b is fixed, when the bar code of the data disk 142 is read by the code reading sensor 20,
By detecting the angle between the reading start position on the data disk 142 and the end of the black area BZ when the film cartridge 21 is loaded, the narrow-angle sector 1 is detected.
The position of 43b, that is, the state of the film 22 is detected.

As described above, the display disk 14
Since No. 3 is fixed to the cartridge spool 141, the positional relationship between the narrow-angle fan-shaped portion 143b and the groove portion 141a does not change. Therefore, by detecting the phase of the rotational angle position of the drive key 13b when the drive key 13b is engaged with the groove portion 141a of the cartridge spool 141 by using a rotary encoder or the like that rotates integrally with the drive key 13b, the display disk 143 can be detected. The position of the narrow-angle fan-shaped portion 143b, that is, the state of the film 22 can be detected.

In FIG. 1, when the cartridge spool 141 is rotated in the Y direction, the film 22 is sent out from the film outlet 116 of the film cartridge 21, and when rotated in the X direction, the film 22 is rewound into the film cartridge 21. Be done. Further, when the cartridge spool 141 is rotated in the X direction, the bar code of the data disk 142, that is, the information on the film 22 is read by the code reading sensor 20 in the cartridge loading chamber 13.

Then, as a result of detecting the position of the narrow-angle fan-shaped portion 143b of the display disk 143, that is, the state of the film 22, if it is an unexposed film, the first frame is the film 22
If the film is partially exposed, the magnetic head 36 detects whether or not the magnetic data is recorded in the frame magnetic recording unit 45 to wind the film to the unexposed frame position. There is.

Next, the operation procedure of this camera will be described with reference to the flow charts of FIGS. 12
Is a flowchart showing a main routine.

The battery 1 is stored in the battery storage chamber 19 of the camera body 11.
When 8 is loaded, the operation is started, first, a predetermined initial setting process such as reset of the RAM 62 and setting of a default value is performed (# 100), and then only the winding or rewinding start information is stored in the EEPROM 56. By determining whether or not the winding or rewinding end information is not stored, it is determined whether or not the battery 18 is attached / detached during the feeding of the film (# 104). And battery 1
If No. 8 is attached or detached (YES in # 104), the process proceeds to the error rewinding subroutine described later (# 108), and
Go to 10.

On the other hand, if the battery 18 is not attached or removed (NO in # 104), it is determined whether the main switch SMAIN is on or off (# 110), and if it is off (NO in # 110), the standby state is entered. On the other hand, if it is on (# 11
If YES at 0), it is determined whether or not the release switch SREL has been turned on from the off state (# 120), and if it remains off (NO at # 120), the process proceeds to # 150.

On the other hand, when the release switch SREL is turned on (YES in # 120), the release operation, that is, photometry, distance measurement and exposure is performed (# 130). When the release operation is completed, one frame is wound up, which will be described later. Proceed to the subroutine (# 140).

Then, it is judged whether or not the eject switch SEJCT is turned on from the off state (# 15).
0), if it remains off (NO in # 150), #
Proceed to 180.

On the other hand, when the eject switch SEJCT is turned on (YES in # 150), it is judged whether or not the ejecting of the film is prohibited (# 160), and if it is not prohibited (NO in # 160), Go to the film eject subroutine described later (# 170),
If the film ejection is prohibited in 180 (YES in # 160), the process directly proceeds to # 180.

Then, it is judged whether or not the switch SFLM has been switched from on to off, that is, whether or not the film 22 has been set in the camera body 11 (# 18).
0), when set (YES in # 180), the process proceeds to the initial load subroutine described later (# 190),
Returning to # 110, on the other hand, if the film 22 is not set (NO in # 180), the process returns to # 110.

For example, while the film 22 is being wound, the battery 1
If 8 is attached or detached, frame feeding may not be performed normally and unexposed frames may occur between exposed frames. However, as described above, in the present embodiment, the film 22 is fed to the EEPROM 56. Memorize information about whether or not
Since the normal operation is performed only when the film is not being fed, it is possible to reliably prevent an unexposed frame from occurring in the middle of the film 22.

13 and 14 are flow charts showing the initial load subroutine of # 190 of FIG.

First, the motor 14 is connected to the door opening / closing gear device 33, the opening / closing key 13a is driven to open the light shielding door 117 (# 200), and then the power supply of the code reading sensor 20 is turned on (# 204). ) Next, the connection of the motor 14 is switched to the rewinding gear device 32 (# 20
8) The rotation of the film cartridge 21 in the rewinding direction is started (# 210), the bar code on the data disk 142 is read, and the angle formed from the reading start position to the end of the black area BZ is detected. The read information, the detected angle, and the like are stored in the RAM 62 (#
220). Then, the rotation operation is stopped (# 230),
The code reading sensor 20 is powered off (# 24
0).

Next, it is judged from the detected angle in # 220 whether or not the film 22 set is unexposed (#
250), if the film 22 is not exposed (# 250
NO), and the process ends.

On the other hand, if the film 22 is unexposed (#
If the answer is YES in 250, the power of PS17 is turned on (# 2).
60), and then the timer starts counting (# 27
0), the winding start information is stored in the EEPROM 56 (# 274), the connection of the motor 14 is switched to the initial load gear device 34 (# 278), the rotation is started in the winding direction, and the feeding of the film 22 is started. (# 280).

Next, it is judged whether or not the count value of the timer exceeds a preset value (# 29
0), if the time is not over (NO in # 290),
The PS 17 determines whether or not the leading edge of the film 22 has been detected (# 300), and returns to # 290 until the leading edge is detected (NO in # 300).

On the other hand, when the leading edge of the film 22 is detected (YES in # 300), the count value of the timer is reset and the counting is started again (# 310). And
It is determined whether or not the count value of the timer exceeds a preset value (# 320), and if it is not over (NO in # 320), it is determined by the PS17 whether or not the first frame of the film 22 is detected. (# 33
0) Until the first frame is detected (NO in # 330), #
Return to 320.

Then, when the first frame of the film 22 is detected (YES in # 330), the driving of the motor 14 is stopped (# 340), the winding end information is stored in the EEPROM 56 (# 345), and the PS17's operation is executed. The power is turned off (# 350) and the film counter is set to "1"(# 3
60), the eject operation of the film is prohibited (# 3
70) and ends.

On the other hand, in # 290, if the count value of the timer exceeds the set value by the time the leading edge of the film 22 is detected (YES in # 290), it is determined that an abnormality has occurred in the film feeding, and will be described later. The process proceeds to the error processing subroutine (# 380) and ends.

Further, in # 320, if the count value of the timer exceeds the set value by the time the first frame of the film 22 is detected (YES in # 320), it is determined that an abnormality has occurred in the film feeding. Then, the process proceeds to an error processing subroutine described later (# 380) and ends.

As described above, the winding start information is stored in the EEPROM 56 at the start of initial loading, and
Since the winding end information is stored at the end of the initial load, when the battery 18 is attached or detached while the film 22 is being fed, it can be reliably determined that the film is being fed.

FIGS. 15 and 16 are flow charts showing the one-frame winding subroutine of # 140 in FIG.

First, the winding start information is the EEPROM 56.
(# 400), the PS17 is powered on (# 405), the timer starts counting (# 410), and then the connection of the motor 14 is switched to the hoisting gear device 35. (# 415), the winding of the film 22 is started (# 420).

Then, it is judged whether or not the count value of the timer exceeds a preset value (# 43
0), if the time is not over (NO in # 430),
The PS 17 determines whether or not one frame of film 22 has been wound (# 440), and returns to # 430 until it is detected (NO in # 440).

When the winding of one frame of the film 22 is detected (YES in # 440), the driving of the motor 14 is stopped (# 450), and the winding end information is EEPRO.
The film counter is stored in M56 (# 455), the power of the PS 17 is turned off (# 460), and the film counter stored in the RAM 62 and displayed on the display unit 55 is incremented by "1"(# 470).

Next, the film counter is changed to # 2 in FIG.
It is determined whether or not the number of stored films in the film cartridge 21 read in 20 and stored in the RAM 62 has been exceeded (# 480), and if not exceeded (# 48).
(NO at 0), and ends.

On the other hand, if the film counter exceeds the number of stored films (YES in # 480), the connection of the motor 14 is switched to the rewinding gear device 32 (# 48).
4), the rewinding start information is stored in the EEPROM 56 (# 488), the PS17 is powered on (# 49).
0), the driving of the motor 14 is started, the rewinding of the film 22 is started (# 500), and then the counting of the timer is started (# 510).

Then, it is judged whether or not the count value of the timer exceeds a preset value (# 52
0), if the time is not over (NO in # 520),
By detecting the perforations 41 and 42 by the PS 17, it is judged whether or not the rewinding of one frame of the film 22 is detected (# 530), and until it is detected (# 530).
(No in 530), and returns to # 520.

When the rewinding of one frame of the film 22 is detected (YES in # 530), the film counter is decremented by "1", and as a result, whether or not the film counter becomes "0", that is, all the frames are detected. It is determined whether the film has been rewound (# 540), and if the film counter is not "0" (NO in # 540), the process returns to # 510 and the above operation is repeated.

On the other hand, when the film counter reaches "0" (YES in # 540), the timer starts counting (# 550), and then it is determined whether the count value of the timer exceeds a preset value. Being (# 56
0), if the time is not over (NO in # 560),
The PS 17 determines whether or not the leading edge of the film 22 has been detected (# 570), and returns to # 560 until the leading edge is detected (NO in # 570).

On the other hand, when the leading edge of the film 22 is detected (YES in # 570), the count value of the timer is reset and counting is started again (# 580), and then it is determined whether the predetermined time T1 has elapsed. Determined (# 59
0) until the predetermined time T1 elapses (N in # 590
O), the rewinding is continued, and when the predetermined time T1 has elapsed (YES in # 590), the rewinding is stopped (# 60).
0). The predetermined time T1 is set to a time at which the leader portion 22a of the film 22 can be reliably rewound into the film cartridge 21.

Then, the power supply of PS17 is turned off (#
610), the rewinding end information is stored in the EEPROM 56 (# 620), and the motor 14 is connected to the door opening / closing gear device 3
The process is switched to 3 (# 625), the film eject is permitted (# 630), and the process ends.

On the other hand, in # 430, if the count value of the timer exceeds the set value before the winding of one frame of the film 22 is detected (YES in # 430), it is determined that an abnormality has occurred in the film feeding. Then, the process proceeds to an error processing subroutine described later (# 640) and ends.

Further, in # 520, if the count value of the timer exceeds the set value before the rewinding of one frame of the film 22 is detected (YES in # 520), it is determined that an abnormality has occurred in the film feeding. After being judged, the process proceeds to the second error processing subroutine described later (# 65
0), the process ends.

Further, in # 560, if the count value of the timer exceeds the set value by the time the leading edge of the film 22 is detected (YES in # 560), it is determined that an abnormality has occurred in the film feeding, and will be described later. Then, the process proceeds to the second error processing subroutine (# 650) and ends.

As described above, in # 625, when the rewinding of the film 22 is completed, the connection of the motor 14 is switched from the rewinding gear device 32 to the door opening / closing gear device 33. The drive key 13b connected to the film 2 is in a free state, and the film 2 which has been tightly wound in the film cartridge 21 when rewinding is completed
Can loosen two.

17 and 18 show the error processing subroutines of # 380 of FIG. 14 and # 640 of FIG. 15, and FIG.
Second error processing subroutine # 650 in FIG.
10 is a flowchart showing the error rewinding subroutine of # 108.

First, the error processing subroutine will be described.

The motor 14 is stopped, the feeding operation is stopped (# 700), and the power supply of PS17 is turned off (# 7).
10). Next, the motor 14 is connected to the rewinding gear device 3
2 (# 714) and rewind start information is EE
It is stored in the PROM 56 (# 718), and rotation of the cartridge spool 141 is started in the rewinding direction (# 72).
0), subsequently, the power source of the code reading sensor 20 is turned on (# 730), the spool rotation counter is reset to "0"(# 740), and the timer starts counting (# 750).

Then, it is judged whether or not the count value of the timer exceeds a preset value (# 76
0), if the time is not over (NO in # 760),
It is determined whether or not one rotation of the cartridge spool 141 is detected by reading the data disk 142 by the code reading sensor 20 (# 770), and the process returns to # 760 until it is detected (NO in # 770).

Then, 1 of the cartridge spool 141
When rotation is detected (YES in # 770), the spool rotation counter is incremented by "1"(# 780).

Next, it is determined whether or not the spool rotation counter has reached a preset value (a value corresponding to 40 frames in this embodiment) (# 790), and the set value is reached (NO in # 790). , # 750 and the above operation is repeated.

When the spool rotation counter reaches the set value (YES in # 790), the motor 14 is stopped and the rewinding of the film 22 is stopped (# 80).
0).

Then, the power source of the code reading sensor 20 is turned off (# 810), and the rewind end information is stored in the EEPROM.
56 (# 820), the connection of the motor 14 is switched to the door opening / closing gear device 33 (# 825), and subsequently,
The ejecting of the film is permitted (# 830), and the process ends.

On the other hand, in # 760, if the count value of the timer exceeds the set value by the time one rotation of the cartridge spool 141 is detected (YE in # 760).
S), the motor 14 is stopped (# 840), the power of the code reading sensor 20 is turned off (# 850), and the process ends.

Next, the second error processing subroutine of # 650 in FIG. 16 will be described. First, the power source of the PS 17 is turned off (# 880), and the process proceeds to # 730. #
After 730, the same operation as that of the error processing subroutine is performed, and thus the description thereof will be omitted.

The error rewinding subroutine of # 108 of FIG. 12 is started from # 714, and thereafter, the same operation as that of the error processing subroutine is performed, so that the description thereof will be omitted.

As described above, in the second rewinding mode in which the film 22 is rewound when it is judged that an abnormality has occurred during the film feeding such as the perforation or the leading edge of the film not being detected, the motor is driven for a preset time. Since the number of revolutions of the cartridge spool 141 is detected by reading the data disk 142 with the code reading sensor 20 instead of continuing the driving of the film 14, the film 22 can be reliably loaded with the film 22 in the minimum necessary time. Can be rewound inside.

FIG. 19 is a flow chart showing the film eject subroutine of # 170 in FIG.

First, it is judged by the detection signal of the switch SFLM whether or not the film cartridge 21 is loaded in the cartridge loading chamber 13 (# 900), and if it is not loaded (YES in # 900), the process proceeds to # 956. If loaded (NO in # 900), the motor 14
Is switched to the rewinding gear device 32 (# 90
5), the code reading sensor 20 is powered on (#
910).

Then, the motor 14 is driven to start the rotation of the cartridge spool 141 in the rewinding direction (#
920), the data disk 14 with the code reading sensor 20.
By reading the bar code 2 of FIG. 2, the opening 1 indicating that the narrow-angle fan-shaped portion 143b of the display disk 143 has been exposed.
It is determined whether or not it is set at a predetermined position facing 35 (# 930), and the drive of the motor 14 is continued until it is set at the predetermined position (NO at # 930). (YES in # 930), the motor 14 is stopped (# 940), and the code reading sensor 20
Is turned off (# 950).

Next, the connection of the motor 14 is switched to the door opening / closing gear device 33 (# 952), the motor 14 is driven, and the light shielding door 117 is closed (# 954).

Then, the connection of the motor 14 is switched to the eject gear device 31 (# 956), and the motor 14 is driven to start the ejection of the film 22 (#
960), the timer starts counting (# 97).
0).

Then, it is determined whether or not the predetermined time T2 has passed (# 980), and the drive of the motor 14 is continued until the predetermined time T2 has passed (NO in # 980), and when the predetermined time T2 has passed ( (YES in # 980), the driving of the motor 14 is stopped (# 990), and the process ends. The predetermined time T2 is set to a time at which the film cartridge 21 in the cartridge loading chamber 13 is reliably pushed out of the cartridge loading chamber 13.

As described above, after the eject switch SEJCT is turned on (YES in # 150 of FIG. 12), the display disc 143 is set at a predetermined position immediately before closing the light blocking door 117 and ejecting the film cartridge 21. By doing so, the film cartridge 21 can be taken out with the display disk 143 set in the correct position.

If the display disk 143 is set to a predetermined position following the completion of the rewinding of the film 22, if the film cartridge 21 is left for a long time before being ejected, the voltage is applied during that time. There is a possibility that the display disk 143 may rotate and the set position may shift due to vibration or shock, but this can be prevented in the present embodiment.

Further, when the rewinding gear device 32 is left as it is while the rewinding of the film 22 is completed, the display disc 143 is set to a predetermined position, and the rewinding gear device 32 is left unshielded. When the connection of the motor 14 is switched from the rewinding gear device 32 to the door opening / closing gear device 33 to close the door 117 and the drive key 13b becomes free, the rewinding is completed and the film cartridge 21 is tightly wound. The film 22 is slackened, and the display disk 143 may be rotated by this momentum to shift the set position, but this can be prevented in the present embodiment.

[0123]

As described above, according to the present invention,
After connecting the drive source and the spool, transmitting the rotational drive force from the drive source to the spool, rewinding the film to the cartridge, rewinding the film, and once disconnecting the drive source and the spool by the connecting means. Since the spool is rotated until the display disc matches the position according to the use condition of the film, the rotation stop position of the display disc is not changed due to the film rewound and the film wound on the spool is loosened. Can be prevented.

Further, the winding spool and the second continuous
Connection means and switching means.
Apply the rotational drive force to the winding spool to move the film above
It is to be wound up on a winding spool, and
The connecting means is provided between the drive source and the winding spool.
And detachably connected so that the hoist
The rotary drive force is transmitted to the pool, and the above
The replacement means includes the connection by the connection means and the second connection.
To switch between connection by means
Allows the film to be wound and rewound with a single drive source.
Will be possible.

A loading chamber for loading the above cartridge
Equipped with an eject switch to open the cover of
The rotation control means turns on the eject switch.
The spool is filled with the display disc.
Rotate until it matches the position according to the usage condition of the
The eject switch is turned on.
After setting the display disc, set the display disc in place.
Press with the display disc set in the correct position.
You can take out the ridge.

[Brief description of drawings]

FIG. 1 is a perspective view of a film cartridge used in the present camera.

FIG. 2 is a perspective view showing a state in which the film cartridge is turned upside down.

FIG. 3 is a plan view showing a radial barcode recorded on a data disc.

FIG. 4 is a diagram showing a structure of a film.

FIG. 5 is a schematic configuration diagram of the inside of the camera body viewed from the upper surface side.

FIG. 6 is a schematic configuration diagram of the inside of the camera body viewed from the back side.

FIG. 7 is a configuration diagram showing a drive system of the present camera.

FIG. 8 is a schematic configuration diagram of the inside of the camera body viewed from the back side, showing a state in which the film is in a shooting position.

FIG. 9 is a block diagram showing a control system of the present camera.

FIG. 10 is a rear view of the camera body.

FIG. 11 is a right side view of the camera body.

FIG. 12 is a flowchart showing a main routine.

FIG. 13 is a flowchart showing an initial load subroutine of # 190 of FIG.

14 is a flowchart showing an initial load subroutine of # 190 of FIG.

15 is a flowchart showing a one-frame winding subroutine of # 140 in FIG.

16 is a flowchart showing a one-frame winding subroutine of # 140 in FIG.

17 is a flowchart showing the error processing subroutine of # 380 of FIG. 14 and # 640 of FIG. 15, the second error processing subroutine of # 650 of FIG. 16, and the error rewinding subroutine of # 108 of FIG. is there.

18 is a flowchart showing an error processing subroutine of # 380 of FIG. 14 and # 640 of FIG. 15, a second error processing subroutine of # 650 of FIG. 16, and an error rewinding subroutine of # 108 of FIG. is there.

FIG. 19 is a flow chart showing a film eject subroutine of # 170 in FIG.

[Explanation of symbols]

11 camera body 13 cartridge loading chamber 13a open / close key 13b drive key 13c eject unit 14 motor (driving source) 14a motor shaft 17 perforation sensor 20 code reading sensor 21 film cartridge (cartridge) 22 film 24 winding spool 25 film presser 26 loading chamber cover 30 rotary cam switching unit (coupling means) 31 eject gear device 32 rewinding gear device (coupling means) 33 door opening / closing gear device 34 initial load gear device 35 hoisting gear device 36 magnetic head 37 motor rotation amount sensor 41, 42 perforation 43 pieces 44 reader magnetic recording unit 45 frame magnetic recording unit 51 motor driver 52 magnetic head driver 55 display unit 56 EEPROM 57 cam position sensor 58 sensor driver 60 control unit Control means) 61 ROM 62 RAM 133, 134, 135, 136 Opening (status display means) 141 Cartridge spool (spool) 142 Data disk 143 Display disk (status display means) 143a Wide-angle fan-shaped part 143b Narrow-angle fan-shaped part SMAIN main switch SREL Release switch SEJCT Eject switch SFLM Film switch

Continuation of front page (56) Reference JP-A-4-365025 (JP, A) JP-A-5-40299 (JP, A) JP-A-7-209682 (JP, A) JP-A-7-114095 (JP , A) JP 8-328115 (JP, A) JP 9-73126 (JP, A) JP 9-211604 (JP, A) JP 60-75824 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) G03B 17/00 G03B 17/26-17/34 G03B 17/38-17/46

Claims (4)

(57) [Claims] 1. A camera for photographing a film contained in a cartridge equipped with a status display means for displaying information on the usage status of the film according to a rotation stop position of a display disk which rotates integrally with a spool. ,
A drive source that applies a rotational drive force to the spool to rewind the film to the cartridge, and a drive source that is interposed between the spool and the drive source and that is separably connected to the drive source to rotate the drive force to the spool. Connection means for transmission,
Rotation control means for rotating the spool until the display disc coincides with the position according to the usage state of the film after the film is rewound and the connection means is once in the separated state. A camera characterized by. 2. The camera according to claim 1, further comprising:
A winding spool, a second connecting means, and a switching means are provided.
Well, the drive source is further driven by rotating the winding spool.
Wind power to wind the film on the winding spool
The second connecting means is connected to the drive source and the upper side.
It is installed between the winding spools and can be detachably connected.
Transmission of rotational drive force from the drive source to the take-up spool
The switching means is connected to the connecting means.
Switching between the connection by the second connection means and the connection by the second connection means
A camera that is characterized by being a camera. 3. The camera according to claim 1 or 2
The cover of the loading chamber to load the above cartridge.
Equipped with an eject switch that indicates
When the eject switch is turned on, the
Use the spool to display the film on the spool
To rotate until it matches the corresponding position.
Characteristic camera. 4. The camera according to claim 2, wherein the camera is
Instruct to open the cover of the loading chamber for loading the cartridge
The rotation control means includes an eject switch.
When the eject switch is turned on, the spool above
Position the display disc according to the usage condition of the film.
It is rotated until it coincides with the above.
When the eject switch is turned on, the second
Connecting hand Change from connecting by steps to connecting by the above connecting means
A camera characterized by being replaced.