JP2921749B2 - 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, and more particularly to a camera having both means for imprinting data on a film surface and means for switching to a plurality of screen sizes having different sizes.

[0002]

2. Description of the Related Art Conventionally, a camera provided with a screen size switching means for switching a screen size to be printed on a film surface to a plurality of screen sizes having different sizes, and having a data printing means for printing predetermined information on a film surface is known. Various proposals have been made.

In such a conventional camera, a mechanism for driving the screen size switching means is disposed in a space between the photographing optical system and the cartridge room, and the data imprinting means is constituted by a photographing optical system and a spool. It was located in the space between the rooms.

[0004]

However, the above-mentioned conventional camera has the following problems. That is, since the mechanism for driving the screen size switching means and the data imprinting means are arranged separately with the photographing optical system interposed therebetween, the switching of the data imprinting position between the screen size switching means driving mechanism and the data imprinting means is performed. The interlocking mechanism for interlocking the mechanism has become complicated, resulting in an increase in size and cost of the camera.

The present invention has been made in view of such a problem, and an object of the present invention is to provide an inexpensive and compact camera in which a screen size switching driving unit and a data imprinting unit can be efficiently arranged.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, a camera according to the present invention is provided with a camera having a different size of image projected on a film surface by protruding and retracting with respect to a subject optical path of a photographing optical system. Screen size switching means for switching between the first screen size and the second screen size; and at least a portion disposed in a space between one of the patrone chamber or the spool chamber and the photographing optical system. Driving means for driving, means for imprinting data corresponding to the first or second screen on the film surface on the photographing optical system side, and a light emitting portion for emitting the imprinted data; An imaging optical system that forms an image of light on the film surface, and a data imprinting unit that is fixed to the driving unit in the space and moves integrally with the driving unit. Characterized in that was.

[0007]

[0008]

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic configuration diagram showing a main part of a camera according to an embodiment of the present invention, and FIG. 2 is a perspective view showing a main part of the camera.

FIGS. 3 to 6 are plan views showing the main gear train in each operation state of the main part of the camera. FIG. 3 shows a state in which zooming operation is possible.
FIG. 5 shows the state when the film winding operation is possible, FIG.
FIG. 6 shows a state in which the film can be rewound, FIG.
Indicates a state when the shooting screen size switching operation is possible.

In the camera of this embodiment, as shown in FIG. 2, a main body drive motor 201 is disposed in a spool 217 as is known. In FIG. 1, the main body drive motor 201 and the spool 217 are shown separately for explanation. The main body drive motor 201 can rotate in the CW direction and the CCW direction. Sun gear 2
Numeral 02 is attached to the main body drive motor 201 so as to coincide with the rotation center thereof.
Is supported so as to always mesh with the sun gear 202. The carrier 204 is disposed at a position where the rotation center of the carrier 204 coincides with that of the main body drive motor 201, and supports the planetary gear 203 with a frictional force.

A stopper 205 is a fixed member that regulates the rotation angle of the carrier 204, and the switching plunger 206 includes a coil 206a and the plunger core 20.
The rotation of the carrier 204 is restricted by an actuator composed of a plunger 6b and a plunger spring 206c.

The coil 206a is normally not energized, and the plunger core 206b is urged by the plunger spring 206c so as to protrude, and holds the carrier 204 between itself and the stopper 205. .
On the other hand, when the coil 206a is energized, the plunger iron core 206b is attracted to the coil 206a, the holding state of the carrier 204 is released, and the carrier 204 is moved within the range regulated by the stopper 205.
It becomes rotatable by the driving force of 01.

When the power supply to the coil 206a is stopped at the time when the carrier 204 has rotated to the vicinity of the rotation limit by the stopper 205, the plunger iron core 206b projects by the urging force of the plunger spring 206c, and the carrier 20
4 between the carrier 2 and the stopper 205 again.
04 rotation is regulated.

By the operation described above, the planetary gear 20
Reference numeral 3 selectively meshes with one of a first zoom gear 209 and a hoisting sun gear 208 which will be described later.

The carrier photo-interrupter 207 (hereinafter, referred to as a carrier PI 207)
4 is a photo-interrupter for detecting the position, and the winding sun gear 208 meshes with the planetary gear 203 when the main body drive motor 201 rotates in the CW direction and the carrier 204 rotates. ing.

The first zoom gear 209 engages with the planetary gear 203 when the main body drive motor 201 rotates in the CCW direction and the carrier 204 rotates. Also, the second zoom gear 210,
The third zoom gear 225, the fourth zoom gear 226, and the fifth zoom gear 227 are connected to the first zoom gear 209.
It is designed to rotate following the rotation of. The second
The zoom gear 210 and the third zoom gear 225 are 2
The fourth zoom gear 22 includes a stepped spur gear.
The sixth and fifth zoom gears 227 are constituted by two-stage gears, one of which is a bevel gear, and change the direction of rotation. The other gear of the fifth zoom gear 227 is a spur gear, meshing with the gear 51a of the rotating frame 51,
The rotating frame 51 is rotated.

Zoom photo interrupter idle gear (hereinafter abbreviated as zoom PI idle gear) 211
Is a gear driven by the fourth zoom gear 226, and a zoom photo interrupter gear (hereinafter abbreviated as a zoom PI gear) 212 is driven by the zoom PI idle gear 211. A slit portion 212a is formed.

The zoom photo interrupter 213 (hereinafter, referred to as a zoom photo interrupter 213)
The zoom PI 213) reads a pulse signal by the rotation of the slit 212a of the zoom PI gear 212, and detects the rotation amount of the rotating frame 51.

The check member 214 is urged toward the first zoom gear 209 by a check spring 232, which is a compression spring, and has a claw 214a tapered toward its tip at its tip. ing. The check member 21
4 is a case where the planetary gear 203 is wound up and the sun gear 20 is wound.
8, the claw 214a is cut between the teeth of the first zoom gear 209, thereby preventing the rotating frame 51 from being accidentally rotated by an external force. . When the planetary gear 203 meshes with the first zoom gear 209, the carrier 204
Of the first zoom gear 2
09, the rotating frame 51 can freely rotate.

The hoisting planet gear 215 is connected and supported by a hoisting carrier 216 so as to always mesh with the hoisting sun gear 208. That is, the hoisting carrier 216 is disposed so that the center of rotation thereof coincides with that of the hoisting sun gear 208, and supports the hoisting planetary gear 215 with a frictional force.

As described above, the main body drive motor 201 is disposed inside the spool 217, and a gear 217a is formed on a lower outer peripheral surface. When the main body drive motor 201 is rotated in the CW direction, the winding carrier 216 is rotated toward the spool 217,
The hoisting planet gear 215 and the spool 217 mesh with each other and rotate. Further, on the upper outer peripheral surface of the spool 217, a claw 217b for engaging with a perforation hole of the film is formed so as to protrude therefrom.
The film is wound by rotating the film.

The locking lever 218 is swingable between the two ends so that one arm 218a engages with the plunger core 206b of the switching plunger 206 and the other arm 218b locks the carrier 204. When the plunger iron core 206b is attracted to the coil 206a, the carrier 204 is unlocked.

The panoramic sun gear 219 meshes with the hoisting planetary gear 215 when the main body drive motor 201 rotates in the CCW direction while the planetary gear 203 meshes with the hoisting sun gear 208. . The panoramic planetary gear 220 is supported so as to always mesh with the panoramic sun gear 219. The panoramic carrier 221 is disposed at a position where the rotational center coincides with the panoramic sun gear 219, supports the panoramic planetary gear 220 with frictional force, and serves as a rotational center of the panoramic planetary gear 220. Further, a shaft 221a extending below the panoramic planetary gear 220 is formed.

The cam gear 222 is a gear for switching the photographing screen size. When the planetary gear 203 is engaged with the hoisting sun gear 208, the main gear driving motor 201 is rotated in the CCW direction to raise the hoist. The carrier 216 has the panoramic sun gear 219
The hoisting planet gear 215 meshes with the panoramic sun gear 219 to rotate it. In addition, the panorama carrier 221 is rotated by the rotation of the panorama sun gear 219, so that the cam gear 22 is rotated.
Rotating to the second side, the panoramic planetary gear 220 and the cam gear 222 mesh with each other and rotate.

Further, a second cam 222b for operating a screen size detection switch 245 for detecting the state of the two light-shielding masks 242, 243 is formed on the upper portion of the cam gear 222. Further above, a first cam 222a for moving the two light-shielding masks 242, 243 is formed.

The switching lever 223 has, at one end thereof, a panorama planetary gear 220 of the panorama carrier 221.
A groove 223a that engages with a shaft 221a that supports the switch lever 223 is formed, and a projection 223b is vertically provided at the other arm end of the switching lever 223. The projections 223b are provided on the rotating frame 5 with respect to the cams 51d formed on the rotating frame 51.
The first rotation makes contact.

The switching lever 223 is rotatably supported by a support shaft in the middle thereof, is rotated at the other arm end by the rotation of the cam 51d of the rotary frame 51, and is engaged with one arm end. The panorama carrier 221 thus rotated is rotated. As a result, the panorama planet gear 220
Are engaged with the first rewind gear 224.

On the other hand, when the cam 51d of the rotary frame 51 and the projection 223b are located at a distance from each other, the switching lever 223 is driven by the panorama carrier 221.

The first rewind gear 224 and the second
Rewind gear 228, third rewind gear 229, fourth rewind gear 230, fifth rewind gear 231
Are driven by the rotation of the panorama planetary gear 220, respectively. The first rewind gear 2
Reference numeral 24 denotes a two-stage spur gear, and a fifth rewind gear 23.
Reference numeral 1 denotes an unillustrated spool which is disposed in a patrone in a state in which the center of rotation coincides with the center of rotation. The unillustrated fork 1 is provided for rotating the unillustrated spool shaft to rewind the film. .

FIGS. 7 to 17 are explanatory views showing the panorama switching mechanism of the present embodiment.

FIG. 7 is a perspective view showing the entire panorama switching mechanism, and FIGS. 8 to 11 are plan views showing cam gears in the camera. FIG.
FIG. 13 is a main part front view showing a panorama switching mechanism in a state where a wide shooting screen size is selected in the camera. FIG. 13 is a main part front view showing a panorama switching mechanism in a state where a narrow shooting screen size is selected in the camera. FIG. Further, FIG. 14 is a side view of a main part showing a panorama switching mechanism in a state where a wide photographing screen size in the camera is selected, and FIG. 15 shows a panorama switching mechanism in a state where a narrow photographing screen size in the camera is selected. It is a principal part side view shown. FIG.
FIG. 17 is a side view of a main part viewed from a direction opposite to FIG. 14 showing a panorama switching mechanism in a state in which a wide shooting screen size in the camera is selected. FIG. FIG. 16 is a side view of a main part showing the panorama switching mechanism in the state shown in FIG.

As shown in FIG. 7, the first panoramic gear 2
Reference numeral 40 denotes a swing center 240d which is supported on a main plate (not shown) so as to be vertically swingable in the drawing. A cam gear 222 is provided below the first panoramic gear 240.
An arm 240a, which is a cam follower contacting the first cam 222a, is formed, and the rotation of the cam gear 222 causes the first panoramic gear 240 to swing about the swing center 240d as a fulcrum. ing. The first
The tip of one arm of the panoramic gear 240 is a partial gear 240
b, and a partial gear 240c is formed at the tip of the other arm, respectively.
2, meshes with the second panoramic gear 241.

As shown in FIG. 7, the second panoramic gear 241 is swingably supported vertically (in the figure) on a base plate (not shown) at a swing center 241d, and a partial gear 241a is provided at the tip of one arm. Is formed, meshes with the partial gear 240b of the first panoramic gear 240, and swings in cooperation with the rotation of the first panoramic gear 240. Also, at the tip of the other arm, a partial gear 2
41b are formed and mesh with the upper light shielding mask 243.

The lower light-shielding mask 242 and the upper light-shielding mask 243 are both supported at their base ends by a fixed shaft 239 (not shown) so as to be vertically movable in FIG. The fixed shaft 239 is supported by a main plate (not shown). The lower light-shielding mask 242 is movable in the axial direction of the fixed shaft 239, and is moved by the movement.
Reference numeral 42a is adapted to enter or retreat into the photographing aperture opening 4c of the main body 4. The lower light-shielding mask 242 is moved by the first panoramic gear 2 meshing with a gear 242b formed on one side surface of the base end.
It is made to follow the swing of 40.

The upper light-shielding mask 243 is supported together with the lower light-shielding mask 242 so as to be movable in the axial direction by a fixed shaft 239 (not shown). The upper light shielding mask 243
The light-shielding portion 243a moves into or out of the photographing opening 4c of the main body by the movement of. The movement of the upper light-shielding mask 243 is performed by the swing of the second panoramic gear 241 meshing with the gear 243b formed on one side surface of the base end. A gear portion 243c is formed to protrude from the upper surface of the base end portion of the upper light-shielding mask 243, and meshes with a panorama switching gear 171 that transmits power to a finder portion.

A panoramic spring 244, which is an elastic member for elastically connecting the light-shielding masks, is disposed between the base ends of the light-shielding masks 242 and 243. In the present embodiment, the panoramic spring 244 is
2,243 are urged in a direction to approach each other, and a contact force of the arm 240a of the first panoramic gear 240 with the cam gear 222 is generated.

The screen size detection switch 245 is fixed to a base plate (not shown), and the contact piece is a second piece of the cam gear 222.
Of the cam 222b. The rotation of the cam gear 222 causes the screen size detection switch 245 to rotate.
(Hereinafter, abbreviated as PN detection SW 245) is turned on / off.

The date holder 246 is fixed to the upper light shielding mask 243, and includes a date lens 248 and a light emitting LED.
The upper light-shielding mask 243 is integrally supported by the upper light-shielding mask 243. Further, light-shielding projections 246a and 246b are provided at the rear end thereof. When shooting with a larger screen size (standard screen size), the hole 4e of the main body is shielded by 246b when shooting, and exposure of the film with harmful light is performed. Is to be prevented. on the other hand,
At the time of photographing with a smaller screen size (panoramic screen size), 4d is shielded from light by 246a, and similarly, exposure of the film due to harmful light is prevented.

The light emitting LED 247 is supported by the date holder 246 and is a light emitting element for imprinting data on a film. The date lens 248 is supported by the date holder 246, and is a lens for forming an image of the light emitted by the light emitting LED 247 on a film. Further, a film photo reflector 249 (hereinafter abbreviated as film PR 249) is provided at a position facing the perforation hole of the film, reads the movement of the perforation hole, and generates and outputs a pulse signal. I have.

The main body 4 has a photographing opening 4c for performing exposure on the film 13, a hole 4d for imprinting a date when the screen size is in a standard state, and a panoramic state when the screen size is in a panoramic state. Sometimes has a hole 4e for imprinting a date.

According to the present embodiment, each of the zooming operation, the film winding operation, the film rewinding operation, and the photographing screen size switching operation can be performed by one motor. The operation will be described below.

First, the zooming operation will be described with reference to FIG.

FIG. 3 is a plan view showing the main gear train when the zooming operation is possible. As shown in FIG. 3, zooming is possible when the planetary gear 203 is engaged with the first zoom gear 209. At this time, the main body drive motor 201 is energized and rotated, so that the first zoom gear 209 to the fifth zoom gear 22 are rotated.
7 rotates to rotate the rotating frame 51 and zoom P
By rotating the I gear 212, the rotation amount of the rotating frame 51 is detected. Also, as shown in FIG. 1, a zoom encoder pattern sheet 76 is attached to the rotating frame 51, and a zoom photo reflector 139 (hereinafter, referred to as a position facing the zoom encoder pattern sheet 76).
Zoom PR 139). Thus, the reference rotation position of the rotation frame 51 is detected, and a fine rotation amount is detected based on the output from the zoom PI 213.

When the main body drive motor 201 rotates in the CW direction, the lens is moved from the retracted state to the wide angle state and zooms to the telephoto side, and when rotated in the CCW direction, zooms to the wide angle side. The collapsing operation of the lens frame is performed in the final area. The zoom encoder pattern sheet 76 is provided so that the output of the zoom PR 139 changes as follows. In other words, the level from the collapsed area to the position just before the wide end is the "L" level, the level from the wide end position to the position just before the tele end is "H" level, and the tele end is the "L" level.

Next, the film winding operation will be described with reference to FIG.

FIG. 4 is a plan view showing the main gear train when the film winding operation is possible. As shown in FIG. 4, the planetary gear 203 is
8 can be wound up. At this time, when the main body drive motor 201 is energized and rotated in the CW direction, the winding planet gear 215 meshes with the spool 217 to rotate the spool 217. The moving amount of the film 13 wound by the spool 217 is detected by the film PR249.

Next, the film rewinding operation will be described with reference to FIG.

FIG. 5 is a plan view showing the main gear train when the film rewinding operation is possible. As shown in FIG. 5, the planetary gear 203 is
8 and the panorama carrier 221 is rotated toward the first rewind gear 224 by the rotation of the rotating frame 51, and the panorama planetary gear 220 is engaged with the first rewind gear 224. In this case, rewinding becomes possible. In this embodiment, when retracting, the rotating frame 51
The cam 51d rotates the projection 223b of the switching lever 223 to enable rewinding. Therefore, when the lens barrel is not at the retracted position, rewinding becomes impossible. Rewinding is performed when the main body drive motor 201 rotates in the CCW direction.

During the rewinding, the switching lever 223 rotates counterclockwise due to the reaction force when the panorama planetary gear 220 and the first rewinding gear 224 mesh with each other. The end 51d 'of the cam 51d is a surface perpendicular to the optical axis so that the rotating frame 51 does not rotate.

Next, the photographing screen size switching operation will be described with reference to FIG.

FIG. 6 is a plan view showing the main gear train when the photographing screen size can be switched. As shown in FIG. 6, the planetary gear 203 is
08 and the switching lever 223 is
When the user is free with respect to one cam 51d, the screen size can be switched. Therefore, when the lens frame is collapsed, the screen size cannot be switched.

When the screen size is to be switched when the planetary gear 203 is engaged with the first zoom gear 209, first, the planetary gear 20 is engaged.
3 needs to be meshed with the hoisting sun gear 208. For this purpose, first, the coil 206a is energized,
The carrier 204 is unlocked, and then the main body drive motor 201 is energized to rotate in the CW direction.
In this case, if the main body drive motor 201 is continuously energized, the rotation direction of the main body drive motor 201 for rotating the carrier and the rotation direction of the main body drive motor 201 for winding the film will be described. Are the same, there is a problem that the spool rotates and the film is wound up. For example, when zooming and screen size switching are performed alternately, the film is wound up little by little even though the photographer has not taken any picture.

In order to solve this problem, in the present embodiment, the carrier 204 is wound around the sun gear 20.
When the carrier 204 is rotated to the side 8, the drive voltage of the main body drive motor 201 is lowered, and the control is performed so that the carrier 204 is rotated with a weak force that cannot wind the film. Further, in order to minimize the energizing time to the main body drive motor 201, a carrier PI 207 is provided as a photo interrupter for detecting the position of the carrier 204.

The pulse output from the carrier PI 207 is changed immediately before the rotation of the carrier 204 toward the hoisting sun gear 208 is completed. The main body drive motor 20 is controlled by stopping the energization of the motor.
1 can minimize the energizing time. With this method, the present embodiment solves the problem of film winding when switching the screen size.

Now, the main body drive motor 201 is CCW
When rotated in the direction, the panoramic planetary gear 220 meshes with the cam gear 222 to rotate the cam gear 222. Hereinafter, a procedure for switching the screen size by rotating the cam gear 222 will be described.

The screen size switching mechanism is configured as shown in FIG. 7, and the rotation of the cam gear 222 causes the first panoramic gear 240 to rotate, and the lower light shielding mask 2 to rotate.
42, the screen size is switched by moving the upper light-shielding mask 243 in parallel with a fixed axis 239 (not shown) showing only the center line and repeatedly entering and leaving the photographing opening 4c. Hereinafter, the relationship between the position of the cam gear 222 and the screen size will be described.

FIG. 8 is a plan view showing the positional relationship between the cam gear 222 and the arm 240a of the first panoramic gear 240 in the standard screen size according to the present embodiment. In the figure, reference numeral 222c indicates a range of the first cam 222a which is held at the standard screen size.
2d indicates a range held in the panoramic screen size.

In the state shown in FIG. 8, both the upper light-shielding mask 243 and the lower light-shielding mask 242 are retracted outside the photographing opening 4c to maintain the screen size in the standard state. At this time, the screen size detection switch 24
5 is held in the off state by the second cam 222b of the cam gear 222. Then, when the photographer operates an operation member (not shown) for photographing in a panoramic screen size, power supply to the main body drive motor 201 is started, and the cam gear 222 starts rotating.

FIG. 9 is a plan view showing a state at the moment when the arm 240a of the first panoramic gear 240 rotates toward the center of the cam gear 222.

At this time, both the lower light-shielding mask 242 and the upper light-shielding mask 243 have moved to the panorama screen size position, but the screen size detection switch 245 is still off.

FIG. 10 is a plan view showing a state where the cam gear 222 slightly rotates from the state shown in FIG.

At this time, the screen size detection switch 2
45 is turned on, and the screen size detection switch 24 is turned on.
Upon detecting the change in the state of No. 5, the power supply to the main body drive motor 201 is stopped, and the rotation of the cam gear 222 is stopped. Switching to the panoramic screen size is performed according to the procedure described above. In addition, by providing a time lag between the movement of the light-shielding mask and the change in the state of the screen size detection switch 245, the reliability of the switching of the light-shielding mask is guaranteed.

Further, the movement of the upper light-shielding mask 243 to the panoramic screen size position causes the eyepiece zoom lens frame 1 to move.
67 moves, the field mask 167a and the eyepiece zoom lens 15 provided integrally with the 167 in the finder optical path.
7, the viewfinder changes to a form similar or similar to the screen size of the narrower view field, and the observation magnification changes, so that the photographer can recognize that the photographing mode has changed.

As for the dimensional accuracy of the screen size in the above-described operation, the screen size in the direction of the fixed axis 139 is the lower light-shielding mask 242 and the upper light-shielding mask 243.
Obtained by applying For this reason, an error due to a variation in the outer shape of another component is not affected, and an accurate screen size can be obtained. Therefore, at this time, the first cam 222a of the cam gear 222 and the arm 2 of the first panoramic gear 240
40a is not in contact.

Regarding the displacement of the screen with respect to the center of the screen during the above-described operation, if the mechanism of the present embodiment is used, the first panoramic gear 240 and the second panoramic gear 241 are just mirrored with respect to the center of the screen. Since such a symmetrical movement is made, if the respective light shielding portions 242a and 243a of the lower light shielding mask 242 and the upper light shielding mask 243 are arranged symmetrically with respect to the center of the screen, these light shielding portions are positioned with respect to the center of the screen. Makes a symmetrical movement as if reflected in a mirror. Therefore, it is possible to obtain the center of the screen with high accuracy without using a structure for achieving center position accuracy.

Next, when the photographer operates an operation member (not shown) for switching to the standard screen size, the power supply to the main body drive motor 201 is started and the cam gear 222 starts rotating.

FIG. 11 shows the first panoramic gear 240
Arm 240a of the first cam 2 of the cam gear 222
FIG. 9 is a plan view showing a state where the cam gear 222 is turned in a direction away from the center of the cam gear 222 by 22a.

At this time, the lower light-shielding mask 242 and the upper light-shielding mask 243 have moved to the standard screen size position, but the screen size detection switch 245 is still on. When the cam gear 222 rotates slightly from this state, the screen size detection switch 245 changes to the off state while the respective masks remain at the standard screen size position. When this state change is detected, the main drive motor 201 is energized. The rotation of the cam gear 222 is stopped. Accordingly, this returns to the state shown in FIG.

Switching to the standard screen size is executed according to the procedure described above. In addition, by providing a time lag between the movement of the light-shielding mask and the change in the state of the screen size detection switch 245, the reliability of the switching of the light-shielding mask is ensured.

Further, by moving the upper light-shielding mask 243 to the standard screen size, the eyepiece zoom lens frame 167 moves, and the visual field mask portion 1 that has entered the finder optical path.
67a, since the variable power lens 157 is retracted from the optical path,
This allows the photographer to recognize that the photographing mode has changed.

Next, the data imprinting apparatus will be described. In the present embodiment, data is imprinted while the film is being fed.

The light-emitting LED 247 can emit one character data by one light emission, and emits light a plurality of times during film feeding to form character string data. The light emitted from the light-emitting LED 247 passes through the date lens 248 to form an image on a film, and prints data. The light emitting LED 247 and the date lens 248 are supported by a date holder 246, and the date holder 246 is fixed to the upper light shielding mask 243. For this reason, the date holder 246 is also moved by the movement of the upper light-shielding mask 243, so that the position where the data is imprinted is changed by switching the screen size, and the data is displayed on the photograph formed at the time of the panoramic screen size. Printed.

FIGS. 18 to 21 are explanatory views showing the film feed amount detecting means in this embodiment.

The main body 4 has a patrone chamber 4a,
A spool chamber 4b is formed, and an exposure opening (aperture) 4c is formed between the cartridge chamber 4a and the spool chamber 4b. Also, holes 4d and 4e for imprinting data are formed, and data can be imprinted on the film through the holes.

The lens frame unit 2 includes the taking lens 14
0 and is fixed to the main body 4. The taking lens 140 is a photographic lens that forms a subject image on the film 13, and is provided in the lens barrel unit 2. Further, the spool 217 is rotatably disposed at the center of the spool chamber 4b of the main body 4, and the film 1
3 is performed. Further, the patrone 12 is housed in the patrone chamber 4a of the main body 4, and a film 13 is wound inside. In the present embodiment, a 35 mm roll film is used as the film 13.

As shown in FIGS. 20 and 21, the roller device 260 includes a cylindrical film contact portion 260a contacting the film 13 and a reflection surface portion 260b having each surface formed of a polygonal column. Is formed. In addition, a shaft (not shown) passes through the center, and the roller device 260 is rotatably supported. The shaft (not shown) is fixed to the main body 4, and the roller device 260 is driven to rotate by the movement of the film 13.

The data imprint timing photoreflector 261 (hereinafter abbreviated as data PR261) is disposed at a position facing the reflection surface 260b of the roller device 260. Then, by the rotation of the roller device 260, the reflection surface of the reflection surface portion 260b and the data PR261 are reflected.
Are directed in parallel, the light emitted from the data PR 261 is reflected by the reflection surface and is again transmitted to the data PR 2.
Come back to 61. As a result, an output pulse from the data PR 261 is generated. Leaf spring 2
Reference numeral 62 is fixed to the rear lid 25 and elastically contacts the film contact portion 260a of the roller device 260. The pressure plate 263 is attached to the rear lid 25 via a pressure plate spring 264 to prevent the film 13 from floating and enhance the flatness of the film 13. The pressure plate spring 264 includes:
The pressure plate 263 is attached to the rear lid 25 by an urging means for elastically urging the pressure plate 263 toward the main body 4.

The light-emitting LED 247 is a light-emitting element having seven segments for imprinting data, is capable of expressing data of one character by one light emission, and is supported by the date holder 246. . Also,
The date lens 248 is a lens for forming characters on the film 13 by emitting light from the light emitting LED 247, and is also supported by the date holder 246.

The date holder 246 supports the light emitting LED 247 and the date lens 248 as described above, and is fixed to the upper light shielding mask 243.
Further, the center of the hole 4d or 4e of the main body 4 and the light emission L
The ED 247 and the date lens 248 are moved vertically so that the centers thereof are coaxial.

In FIG. 18, reference numeral 11 denotes a main capacitor for a strobe, and reference numeral 10 denotes two power supply batteries. The film PR249 is a film 13
The number of perforations passing by the output pulse signal of the photoreflector 249 is counted, and the film is fed one frame. Further, reference numeral 21 denotes a front cover serving as an exterior part of the camera, and reference numeral 24 denotes a rear cover, which supports the back cover 25 rotatably.

The back cover 25 has a hinge at one end, and is supported by the rear cover 24 about the hinge as a center of rotation, and can be opened and closed. The leaf spring 262 and the pressure leaf spring 264 are attached. The back cover shaft 26 is a shaft that rotatably supports the back cover 25 and the rear cover 24. Reference numeral 27 denotes a side cover serving as an exterior part of the camera.
Reference numerals 7 and 38 denote operation buttons, and reference numeral 40 denotes a finder window.

Next, the operation of the roller device 260 will be described.

As shown in FIG. 18, the spool 217 is rotated by the rotation of the main body drive motor 201, and when the film 13 is taken up, the roller device 260 is driven to rotate by the film 13. In order to improve the followability of the roller device 260 and the film 13 during the rotation of the roller device 260, it is necessary to increase the pressure contact force between the roller device 260 and the film 13 to some extent. Therefore, the roller device 260 is attached to the back cover 25 as described above.
A leaf spring 262 is elastically pressed against the plate spring 262. Since the leaf spring 262 is attached to the back cover 25, when the back cover 25 is opened, the pressure contact between the roller device 260 and the leaf spring 262 is released. Here Patrone 1
2, the film 13 is sandwiched between the roller device 260 and the leaf spring 262, and the elastic force of the leaf spring 262 causes the film 13 to be sandwiched between the roller device 260 and the leaf spring 262. It is in contact with the roller device 260.

The position of the roller device 260 in the film advancing direction is near the entrance of the spool chamber 4b of the main body 4, and is substantially parallel to the exposure opening 4c because the film 13 is wound around the spool 217. By disposing at a position that changes the direction from the direction toward the spool 217,
The force with which the film 13 contacts the roller device 260 can be further increased.

In this embodiment, the followability of the roller device 260 to the movement of the film 13 is improved in this way.

Next, the arrangement position of the roller device 260 in a direction perpendicular to the film advancing direction will be described.

In the present embodiment, the arrangement position of the film contact portion 260a of the roller device 260 is considered. That is, if the film contact portion 260a is disposed at a position where the film contact portion contacts the photographing screen portion of the film 13, there is a risk of damaging the film, and if the film contact portion 260a is disposed so as to contact the perforation hole, the roller device 260 In this embodiment, the film contact portion 26 of the roller device 260
0 a is disposed at a position where it contacts the outer edge of the perforation hole of the film 13. FIG. 20 shows an example in which the roller device 260 is disposed at an optimum position.

Now, a pulse signal is generated in the data PR 261 by the rotation of the roller device 260, and the film feed amount can be calculated by counting the number of pulses. For example, if the diameter of the roller device 260 is set to be equal to the winding amount of one frame of the film when the roller device 260 rotates 10 times, and the polygonal column 260b is a regular hexagonal column, the output pulse per frame The number is 10 (rotation) × 6 (square prism) = 60 (pulse). On the other hand, in the film feed detection system in which the perforation in the film 13 is directly read by a known photo reflector, one frame of the film is 8 perforations, so that eight pulses are output. Therefore, it is possible to more finely detect the film feeding amount by using the roller.

Further, in recent years, photographs in which the date and the like are imprinted in the prints of the photographs have become widespread. However, if the camera is equipped with a film feed / detection device as in the present embodiment, such data is copied. The bunching device can be realized with a simple configuration.

The data imprinting device is adapted to imprint the data while the film is being fed.
As shown in FIGS. 18 and 19, the LED 247 and the date lens 248 that emit light are supported by the date holder 246, and the date holder 246 is positioned with respect to the main body 4. A hole 4 d for imprinting data is formed in the main body 4, and the light emitted by the light-emitting LED 247 passes through the date lens 248 so that the film 1
3, and the data is imprinted.

The light emitting LED 247 can expose data of one character per light emission. Therefore, when the data is to be printed, the light emitting LED 247 is used when the film 13 is fed and passes over the hole 4d of the main body 4.
Are sequentially emitted the required number of times, and data is imprinted.

The feeding speed of the film 13 is not always constant due to a change in the amount of pull-out force from the patrone 12, a variation in the mechanical accuracy of a winding gear train or a winding motor (not shown), abrasion, and the like. doing. As a result, if the light emitting LED 247 is always lit at predetermined time intervals to detect data without detecting the feeding speed of the film 13, the character spacing of the character string printed on the film 13 is changed. Since the characters become wider or narrower or characters overlap, the feeding speed must be detected with high accuracy.

In this embodiment, the feeding speed is detected by measuring the interval of the output pulse signal from the data PR261. Here, in the film feeding detection method for directly reading the known perforation hole, 1
Since the output is 8 pulses per frame, the resolution per frame is 8
Becomes On the other hand, if the roller described above is used, 6
Since a 0-pulse output signal is generated, the resolution per frame is 60, and the feed detection device using rollers can detect the feed speed more precisely, and can correctly align the character spacing when imprinting data. It is possible to control the light emission interval.

The polygonal column 2 of the roller device 260
The roller 60b does not need to be a hexagon as in the illustrated roller, but may be an arbitrary polygonal column in consideration of the character spacing and the like when data is imprinted. Further, a cylinder having a reflective surface and a non-reflective surface alternately painted such as silver and black may be used. In the present embodiment, since the data is used for the data imprinting function, the resolution is required to be fine, so the polygonal column 260b is a polygon having many sides.

FIGS. 22 and 23 show the difference in the character spacing depending on the resolution.

FIG. 22 shows a case where the resolution is high and the data PR
An example is shown in which one character is printed every time there is one output pulse signal from the H.261. FIG. 23 shows an example in which the resolution is coarse and four characters are printed every time there is one output pulse signal from the data PR261.

In the example shown in FIG. 22, when one output pulse signal from data PR261 is generated, data is printed for one character. Even if the feeding speed of the film changes, the generation interval of the output pulse signal from the data PR 261 changes accordingly, so that the character interval of the data imprinted character string becomes constant.

In the example shown in FIG. 23, data PR2
Since the change in the feed speed between the two output pulse signals from the output pulse signal 61 cannot be detected, the control means performs control assuming that the feed speed is constant. As a result, the character spacing of the character string varies. Would. The smaller the number of characters to be imprinted for each output pulse signal from the data PR261, the smaller the variation in character spacing can be. The greater the number of characters to be imprinted, the greater the variation in character spacing.

In the present embodiment, the detection of the one-frame advance of the film is based on the film P which detects the movement of the perforation.
The use of R249 does not cause a cumulative error in the film feed amount that increases as the number of shots increases, and the method of reading the rotation of the roller device 260 with high resolution for imprinting the date requires a data character spacing. Can realize a stable camera.

Next, a modified example of the film feed amount detecting mechanism in the above embodiment will be described.

If the diameter of the roller device 260 is manufactured with high precision, there is almost no error in one-frame feed of the film. Therefore, one-frame feed of the film is performed only with the data PR261 for detecting the rotation of the roller device 260. It does not matter. In this case, since the film PR249 can be eliminated, a smaller camera can be realized (see FIG. 35). Further, in the case of a camera without a data imprinting function, the resolution may be coarse, so that the polygonal portion 260b of the roller device 260 may be a polygon having a small number of sides.

FIG. 24 is a block diagram showing a configuration of an electric circuit in the camera of this embodiment.

The bipolar IC 402 has a zoom PI 21
3, pulse signals are input from the zoom PR 139, the carrier PI 207, the film PR 249, and the data PR 261. The pulse signals are shaped and output to the main CPU 401. Further, based on each actuator drive signal from the main CPU 401, the shutter plunger drive circuit 49
1, the shutter plunger 99, the main body driving motor 201, and the switching plunger 206 are driven by a main body driving motor driving circuit 492 and a switching plunger driving circuit 493.

A main CPU 401 controls the driving of the entire camera, and includes a release switch (SW) 318 and a zoom tele switch (S) which are manual operation switches.
W) 319, a zoom wide switch (SW) 320, a panorama changeover switch (SW) 321, a forced rewind switch (SW) 322, a data imprint mode changeover switch (SW) 333, and a screen size detection switch. (SW) 245 state is detected. Also,
An operation signal is output to the bipolar IC 402, the date CPU 403, and the like based on the input signals. Further, the state of the power switch (SW) 317 is detected, and ON / OFF of the power of the entire camera is controlled.

The date CPU 403 determines the date, month, day,
The hour / minute data is always calculated.
The light emitting LED 2 based on the imprint signal from
47 is caused to emit light, and the data is printed on the film 13.

The shutter plunger 99 is driven by a shutter plunger drive circuit 491 so that the shutter opens when a voltage is applied and a current flows, and the shutter closes when the current is turned off.

Next, each operation of the present embodiment will be described with reference to the flowcharts shown in FIGS.

FIG. 25 is a flow chart showing the operation of extending the lens barrel from the collapsed state to the wide end.

When the power switch 317 is switched from OFF to ON, the operation of extending to the wide end is started (step S1). First, it is determined whether the planetary gear 203 is connected to the lens frame driving side, that is, it is determined whether the WZ flag is 1 or not (step S2). Is executed (step S3). Thereafter, it is determined whether or not the wide end flag is 1 (step S).
4) If 1, return to the main routine (step S11). If the flag is not 1, the main body drive motor 201 is rotated in the CW direction until the zoom PR 139 becomes the "H" level (steps S5 and S6), and the motor is extended to the wide end. Then, after the main body drive motor 201 is turned off (step S7), the wide end flag is changed from 0 to 1 (step S8), and the retracted flag is changed from 1 to 0 (step S9). And zoom P
The counter of I213 is reset (step S1
0), returning to the main routine (step S1)
1).

FIG. 26 is a flowchart showing the operation when zooming to the tele side.

The zoom tele switch (SW) 319 is turned on.
When the state is reached, the telezooming operation is started (step S101). This telezooming operation is performed in accordance with FIG.
As in the extension operation shown in FIG. 5, zooming is performed to the telephoto side after the gear train is reliably switched to the lens frame driving side, and when in the telephoto end state, the zooming ends there. Less than,
Details will be described.

First, it is determined whether or not the planetary gear 203 is connected to the lens frame driving side, that is, whether or not the WZ flag is 1 (step S102). A subroutine (W to Z) for switching to the frame drive side is executed (step S10)
3). Thereafter, it is determined whether or not the telephoto end flag is 1 (step S104), and if it is 1, the process returns to the main routine (step S112). If the flag is not 1, the main body drive motor 201 is rotated in the CW direction (step S105), the zoom PI 213 is monitored (step S106), the wide end flag is changed from 1 to 0 (step S107), and the zoom PR 139 is set. Is "H" level or not (step S108). And
Until the zoom PR 139 is at the “H” level and the zoom tele switch (SW) 319 is turned off (step S109), the process returns to step S105 to rotate the main body drive motor 201.

If the zoom tele switch (SW) 319 is turned off in step S109, and if the zoom PR 139 is not at the "H" level in step S108, the tele end flag is changed from 0 to 1 (step S109).
110), and turns off the main body drive motor 201 (step S
111), and returns to the main routine (step S
112).

FIG. 27 is a flowchart showing the operation when zooming to the wide side.

When the zoom wide switch (SW) 320 is
In the N state, the wide zooming operation is started (step S201). This zooming operation is performed according to FIG.
When the gear train is switched to the lens frame driving side without fail, zooming is performed to the wide side and the output of the zoom PI is monitored in the wide end state to terminate the zooming in the same manner as in the feeding operation shown in FIG. Hereinafter, the details will be described.

First, it is determined whether or not the planetary gear 203 is connected to the lens frame driving side, that is, whether or not the WZ flag is 1 (step S202). A subroutine (W to Z) for switching to the frame driving side is executed (step S20)
3). Thereafter, it is determined whether or not the wide end flag is 1 (step S204), and if it is 1, the process returns to the main routine (step S212). If the flag is not 1, the main body drive motor 201 is rotated in the CCW direction (step S205), the zoom PI 213 is monitored (step S206), the telephoto end flag is changed from 1 to 0 (step S207), and the zoom PI 213 is set. It is determined whether or not the end is the wide end based on the count number (step S2).
08). When the zoom end is not at the wide end from the count number of the zoom PI 213 and the zoom wide switch (S
W) Until 320 is turned off (step S209), the process returns to step S205, and the main body drive motor 201 is rotated.

If the zoom wide switch (SW) 320 is turned off in step S209, or if the zoom end is wider than the count of the zoom PI 213 in step S208, the wide end flag is set to 0 to 1.
(Step S210), the main body drive motor 201 is turned off (step S211), and the process returns to the main routine (step S212).

FIG. 28 is a flowchart showing the operation when the lens frame is driven from the photographing area to the collapsed state.

The power switch (SW) 317 is turned ON from ON.
When the mode is switched to the FF, the collapsing operation is started (step S301). Further, when the film ends during a film winding operation described later and automatic rewinding is started (see FIG. 29), a forced rewinding switch (SW) 3
The retracting operation is also performed in the rewinding operation (FIG. 30) when 22 is turned on.

In the collapsing operation, the collapsing operation is performed after the gear train is reliably switched to the lens frame driving side, similarly to the extending operation shown in FIG. 25, and the collapsing operation is completed in a state where the output of the zoom PI does not change. And the collapsing operation ends. Hereinafter, the details will be described.

First, it is determined whether or not the planetary gear 203 is connected to the lens frame driving side, that is, whether or not the WZ flag is 1 (step S302). A subroutine (W to Z) for switching to the frame driving side is executed (step S30)
3). Thereafter, it is determined whether or not the retracted flag is 1 (step S304), and if it is 1, the process returns to the main routine (step S311). If the flag is not 1, the main body drive motor 201 is rotated in the CCW direction until there is an output from the zoom PI 213 (step S30).
5, Step S306), and move to the retracted position. Thereafter, the main body drive motor 201 is turned off (step S3).
07), the collapsing flag is changed from 0 to 1 (step S30).
8) Then, the tele end flag is changed from 1 to 0 (step S309). Then, the wide end flag is changed from 1 to 0 (step S310), and the process returns to the main routine (step S311).

FIG. 29 is a flowchart showing the operation of winding one frame of film.

The shutter plunger 99 is operated by the ON operation of the release switch (SW) 318, and after the film exposure operation is completed, the winding operation is started (step S401). First, first planetary gear 20
3 is connected to the film drive side, that is, whether the WZ flag is 0 or not (step S40).
2) If not connected, a subroutine (Z to W) for switching the carrier 204 to the film drive side is executed (step S403), and then the winding operation is started.

Further, when it is determined that the mode is the data imprinting mode based on the state of the data imprinting mode changeover switch (SW) 323, the data imprinting operation is executed during the film winding (steps S404 to S4).
06). In addition, the film winding operation is performed on the film PR2.
The output of 49 is monitored, and the process is terminated when eight perforations of the film have passed or when the winding up to the last end of the film has been completed and a predetermined time set by the winding timer has elapsed (steps S407 to S422).

FIG. 30 is a flowchart showing the film rewinding operation.

This rewinding operation is performed when the film is wound up to the final end during the winding operation shown in FIG. 29 and when the forced rewinding switch (SW) 322 is turned off.
The process is started when N is reached (step S501).

In this rewinding operation, the panorama planetary gear 220 is engaged with the first rewinding gear 224 by first bringing the lens frame into the collapsed state, and then the subroutine (Z to) for switching the carrier 204 to the film drive side is performed. W)
(Steps S502 to S50)
7) Then, a rewind operation is performed.

That is, until the output from the film PR 249 is no longer detected, the main body drive motor 201 is turned on by CCW.
(Step S508, Step S50)
9), T1 second is set in the timer (step S510),
The main body drive motor 201 is turned off (step S51).
1). Thereafter, the film frame counter is reset (step S512), and the process returns to the main routine (step S513).

FIG. 31 is a flowchart showing an operation for switching the photographing screen between the normal size and the panorama size (hereinafter, referred to as a panorama switching operation).

This panorama switching operation is started when the state of the panorama switch (SW) 321 changes (step S601). This switching operation first confirms or executes that the lens frame has been extended to the photographable area, and then switches the carrier 204 to the film driving side (steps S602 to S606 and step S611). Then, the PN detection switch (SW) 2
The screen size is switched by monitoring the change in the state of step 45 (steps S607 to S607).
615). Note that the timer T2 in step S614
In seconds, the PN detection switch (SW) 245 is turned from ON to OF
After switching to F, the timer rotates the cam gear 222 to ensure that the screen size is reliably switched to the normal size.

FIG. 32 is a flowchart showing an operation of rotating the carrier 204 to switch the planetary gear 203 from the film driving side to the lens frame driving side, and a subroutine W to Z (step S701).

First, the switching plunger 206 is turned on (step S702), and the main body drive motor 201 is rotated in the CW direction until the zoom PI 213 outputs (steps S703 and S704). Thereafter, the main body drive motor 201 is turned off (step S705), the switching plunger 206 is turned off (step S706), the WZ flag is changed from 0 to 1 (step S707), and the process returns (step S708).

FIG. 33 is a flowchart showing the operation of rotating the carrier 204 to switch the planetary gear 203 from the lens frame driving side to the film driving side, and the subroutine Z to W (step S801).

First, the switching plunger 206 is turned on (step S802). Here, if the driving force of the main body drive motor 201 at the time of switching is large, the spool 217 rotates at the time of completion of switching, and the film 13 is wound up.
The main body drive motor is operated at a predetermined low voltage at which the film 13 cannot be wound (step S8).
03). This is because a drive voltage setting signal is output from the main CPU 401 to the bipolar IC 402, and the bipolar IC 402 and the shutter plunger drive circuit 491
Performs the above operation. The switching operation is completed by monitoring that the output of carrier PI 207 is at the "L" level (step S804) to step S804.
808).

FIG. 34 is a flowchart showing the data imprinting operation.

When the data imprinting subroutine is started (step S901), first, the data PR26 is read.
The output of the film PR 249 and the output of the data PR 261 are monitored until the output of No. 1 changes (step S 902-
In step S904, after the output of the data PR261 has changed, the first digit of the data is printed on a film (step S905). Thereafter, the outputs of the film PR249 and the data PR261 are monitored again until the output of the data PR261 changes (steps S906 to S906).
Step S908), after the output of the data PR261 changes, the second digit of the data is printed on the film (Step S909), and these series of operations are repeated until the last digit of the data is printed (Step S910-Step S910). S913).

As described above, the data is sequentially imprinted on the film, and the data imprinting subroutine is terminated (step S914).

FIGS. 36 to 39 are explanatory views showing the light shielding structure of the lens frame unit, the main body opening and the light shielding mask.

The main body 4 is provided with two rows of continuous light-shielding ribs 4g, which form a light-shielding structure with the lens frame unit 2, at the upper and lower portions of the photographing opening 4c and at the side edges on the patrone chamber side. A light-shielding groove 4f that forms a light-shielding structure with the light-shielding masks 242 and 243 is formed at a side edge of the photographing opening 4c on the spool chamber side.

On the other hand, at the end of the lens frame unit 2 opposite to the light-shielding rib 4g of the photographing opening 4c, a light-shielding rib 2b forming a light-shielding structure with the main body 4 is provided. A light-shielding mask 24 is provided at an end of the lens barrel unit 2 facing the light-shielding groove 4f of the photographing opening 4c.
A light-shielding groove 2a forming a light-shielding structure with the light-shielding grooves 2 and 243 is formed.

The lower light-shielding mask 242 is located between the main body 4 and the lens frame unit 2, and is moved in parallel by the above-mentioned driving mechanism. Further, a part of the photographing opening 4c is shielded by the light-shielding portion 242a. Further, light shielding ribs 242d and 242e are provided, and have a shape corresponding to the light shielding groove 4f and the light shielding groove 2a.

The upper light-shielding mask 243 is located between the main body 4 and the lens frame unit 2, and is moved in parallel by the above-mentioned driving mechanism. Further, a part of the photographing opening 4c is shielded by the light-shielding portion 243a. The movement thereof is such that when the lower light-shielding mask 242 covers the photographing opening 4c, the upper light-shielding mask 243 also covers the photographing opening 4c. When the lower light shielding mask 242 is retracted from the photographing opening 4c, the upper light shielding mask 243 is also moved to the photographing opening 4c.
c. Furthermore, the light shielding rib 2
43d and 243e are provided, and the light shielding groove 4f,
It has a shape corresponding to the light shielding groove 2a.

38 and 39, the light-shielding structure between the main body 4 and the lens frame unit 2 is indicated by hatching.
5 shows a light-shielding structure portion range constituted by g and the light-shielding rib 2b.

Next, the operation of the light shielding structure of the lens frame unit, the opening of the main body and the light shielding mask will be described.

As shown in FIGS. 36 and 37, the main body 4 and the lens frame unit 2 are engaged with each other by a light-shielding structure including light-shielding ribs 4g and 2b, and are mainly provided in a viewfinder provided on the exterior. Although the harmful light L that enters the camera through holes such as windows and strobe windows is prevented from entering the photographing opening 4c, in the case of a camera whose screen size can be switched, the light shielding member is driven from the outside. The body 4 and the frame unit 2
There is a portion where the light-shielding structure cannot be formed. Referring to FIG. 38, the right end face remains as a part that cannot be formed into a light-shielding structure, and there is a risk that harmful light L may enter from this part and deteriorate image quality.

In this embodiment, as shown in FIG. 36, in order to prevent the harmful light L from entering, the lower and upper light shielding masks 2 are formed.
By making the joint between the main body 4 and the lens frame unit 2 into a light-shielding structure, the harmful light L is prevented from entering, and a high-quality photograph can be obtained.

In addition, the lower and upper light shielding masks 24 are provided.
Reference numerals 2 and 243 move to switch the photographing screen size, as shown in FIGS. 38 and 39, so as to cover a part of the photographing opening 4c. At this time, the two light-shielding masks 24 are arranged so that harmful light L from a direction orthogonal to the moving direction of the light-shielding masks 242 and 243 does not enter.
2 and 243, the light-shielding ribs 2 face each other.
42d, 242e, 243d and 243e are extended.

These light shielding ribs 242d, 242e, 2
43d and 243e, the respective light shielding ribs overlap in the moving direction of the light shielding masks 242 and 243 even when a wide screen size is selected as shown in FIG.
Light is prevented from entering from a direction orthogonal to the moving direction of the light-shielding mask.

Next, a modified example of the light shielding structure will be described.

FIGS. 40 to 42 are explanatory views showing modified examples of the light shielding structure.

In the first modification, as shown in FIG. 40, two light-shielding grooves 242f are provided in the lower light-shielding mask 242,
h, a light-shielding rib 2c in the lens barrel unit 2 is provided to form a light-shielding structure. In the first modified example, the shape portion protruding in the movement direction of the light-shielding mask 242 corresponding to the light-shielding ribs 242d and 242e in the above embodiment is an H shape including the reference numeral 242f in the movement direction of the light-shielding mask 242. I have. Although not shown, the light-shielding structure between the upper light-shielding mask 243 and the main body 4 and the lens frame unit 2 is the same.

In the second modification, as shown in FIG. 41, the light shielding rib 242e and the light shielding groove 4 are different from the above embodiment.
f, and a light-shielding rib 243e
Both the light-shielding structure constituted by the light-shielding groove 4f and the light-shielding groove 4f are eliminated.

Further, as shown in FIG. 42, the third modification is different from the above-described embodiment in that a light-shielding structure composed of a light-shielding rib 242d and a light-shielding groove 2a,
The light shielding structure composed of the light shielding groove 2a and the light shielding groove 2a is omitted.

It should be noted that these modifications may be adopted in combination with the light-shielding structure in the above-described embodiment by selecting any structure in consideration of the entrance path of the harmful light L and the space relationship. No problem.

As described above, according to the above embodiment, a highly accurate film detecting mechanism can be realized with a small and simple configuration.

[Appendix] According to the embodiment of the present invention as described in detail above, the following configuration can be obtained. That is,
In a camera capable of imprinting a date, a screen size switching means for switching a screen size, a date imprinting means for imprinting a date on a film, and a photographic optical system for projecting a subject image onto a film, A film cartridge room arranged on the side of the photographing optical system, and a film spool room arranged so as to sandwich the photographing optical system between the film cartridge room and the film cartridge room or the film spool room. A camera having date imprinting means in which the screen size switching means and the date imprinting means are arranged between a photographing optical system.

[0159]

As described above, according to the present invention, the screen size switching driving means and the data imprinting means can be efficiently arranged, and an inexpensive and compact camera can be provided.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing a main part of a camera according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a main part of the camera of the embodiment.

FIG. 3 is a plan view showing a main gear train when a zooming operation is possible in the camera of the embodiment.

FIG. 4 is a plan view showing a main gear train when a film winding operation is possible in the camera of the embodiment.

FIG. 5 is a plan view showing a main gear train when a film rewinding operation is possible in the camera of the embodiment.

FIG. 6 is a plan view showing a main gear train of the camera according to the embodiment when a photographing screen size switching operation is possible.

FIG. 7 is a perspective view showing the entire panorama switching mechanism in the camera of the embodiment.

FIG. 8 is a plan view showing a positional relationship between the cam gear 222 and the arm 240a of the first panoramic gear 240 when the camera has a standard screen size in the camera of the embodiment.

FIG. 9 is a plan view showing a state at the moment when the arm 240a of the first panoramic gear 240 rotates toward the center of the cam gear 222 in the camera of the embodiment.

FIG. 10 is a plan view showing a state in which the cam gear 222 slightly rotates from the state shown in FIG. 9 in the camera of the embodiment.

FIG. 11 is a plan view showing a state in which the arm portion 240a of the first panoramic gear 240 is rotated by the first cam 222a of the cam gear 222 in a direction away from the center of the cam gear 222 in the camera of the embodiment. It is.

FIG. 12 is a front view of a principal part showing a panorama switching mechanism in a state where a wide photographing screen size is selected in the camera of the embodiment.

FIG. 13 is a front view of a principal part showing a panorama switching mechanism in a state where a narrow photographing screen size is selected in the camera of the embodiment.

FIG. 14 is a side view of a principal part showing a panorama switching mechanism in a state where a wide photographing screen size is selected in the camera of the embodiment.

FIG. 15 is a side view of a principal part showing a panorama switching mechanism in a state where a narrow photographing screen size is selected in the camera of the embodiment.

FIG. 16 is a side view of a main part of the camera of the embodiment, showing a panorama switching mechanism in a state in which a wide shooting screen size is selected, viewed from a direction opposite to FIG. 14;

FIG. 17 is a side view of a main part of the camera according to the embodiment, showing a panorama switching mechanism in a state in which a narrow photographing screen size is selected, viewed from a direction opposite to FIG. 15;

FIG. 18 is a sectional view showing a main part of the camera according to the embodiment.

FIG. 19 is a roller device 2 in the camera of the embodiment.
It is a principal part expanded sectional view of 60 vicinity.

FIG. 20 is a rear view of the camera according to the embodiment, showing a back cover in an open state.

FIG. 21 is a roller device 2 in the camera of the embodiment.
It is an enlarged perspective view of 60.

FIG. 22 is a diagram showing a timing chart for explaining the imprinting of data and an example of imprinting characters when the detection resolution is precise in the camera of the embodiment.

FIG. 23 is a diagram showing a timing chart for explaining imprinting of data and an example of imprinted characters when the detection resolution is low in the camera of the embodiment.

FIG. 24 is a block diagram showing a configuration of an electric circuit in the camera of the embodiment.

FIG. 25 is a flowchart showing the operation of the camera according to the embodiment for extending the lens barrel from the collapsed state to the wide end.

FIG. 26 is a flowchart showing an operation when zooming to the tele side in the camera of the embodiment.

FIG. 27 is a flowchart showing an operation when zooming to the wide side in the camera of the embodiment.

FIG. 28 is a flowchart showing the operation of the camera of the embodiment when the mirror frame is driven from the shooting area to the collapsed state.

FIG. 29 is a flowchart showing an operation of winding up one frame of film in the camera of the embodiment.

FIG. 30 is a flowchart showing a film rewinding operation in the camera of the embodiment.

FIG. 31 is a flowchart showing an operation of switching a shooting screen between a normal size and a panorama size in the camera of the embodiment.

FIG. 32 shows a carrier 2 in the camera of the embodiment.
04 to rotate the planetary gear 203 from the film driving side to the lens frame driving side, the subroutine W to
6 is a flowchart showing Z.

FIG. 33 shows a carrier 2 in the camera according to the embodiment.
04 to rotate the planetary gear 203 from the lens frame drive side to the film drive side, subroutine Z to
5 is a flowchart showing W.

FIG. 34 is a flowchart showing a data imprinting operation in the camera of the embodiment.

FIG. 35 is a rear view showing a modification of the film feeding amount detecting device.

FIG. 36 is a transverse cross-sectional view near the center of the camera, showing a light-shielding structure of the lens barrel unit, the main body opening, and the light-shielding mask in the embodiment.

FIG. 37 is a vertical cross-sectional view near the center of the camera, showing a light-shielding structure of the lens barrel unit, the main body opening, and the light-shielding mask in the embodiment.

FIG. 38 is a layout diagram showing a light-shielding structure of a lens barrel unit, a main body opening, and a light-shielding mask when a wide shooting screen size is selected in the embodiment.

FIG. 39 is a layout diagram showing a light-shielding structure of a lens barrel unit, a main body opening, and a light-shielding mask when a narrow shooting screen size is selected in the embodiment.

FIG. 40 is an essential part cross sectional view showing a first modification of the light shielding structure in the embodiment.

FIG. 41 is an essential part cross sectional view showing a second modification of the light shielding structure in the embodiment.

FIG. 42 is a cross-sectional view of a principal part showing a third modification of the light shielding structure in the embodiment.

[Explanation of symbols]

 2 Mirror frame unit 4 Camera body 4a Patrone room 4b Spool room 13 Film 242 Lower light-shielding mask 243 Upper light-shielding mask 246 Date holder 247 Light-emitting LED 248 Date lens

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) G03B 17/24

Claims (1)

(57) [Claims] 1. A screen size switching means for switching between a first screen size and a second screen size having different sizes to be displayed on a film surface by protruding and retracting with respect to a subject optical path of a photographing optical system. A driving unit for driving the screen size switching unit, at least a part of which is disposed in a space between one of the cartridge chamber or the spool chamber and the photographing optical system; and data corresponding to the first or second screen. A means for imprinting on the film surface of the photographing optical system side, supporting a light emitting unit that emits the imprint data and an imaging optical system that forms light from the light emitting unit on the film surface, A data imprinting means which is fixed to the driving means in the space and moves integrally with the driving means.