JPH03137624A - Camera - Google Patents

Abstract

PURPOSE:To realize a light and small-sized camera by providing a means for imprinting a trimming specification code corresponding to the size of a picture area from the format of a film used on the film. CONSTITUTION:Photographing is performed only in the picture area having a smaller size (for example, a trimming size shown by A1 in figure) than the size of the film used, for example, the full size of a 35mm film. Then, the trimming codes CO1 and CO2 showing that the size of the picture area is just equivalent to the A1 are imprinted in the picture areas FL1 and FL2 on the film, which is previously decided with a development laboratory. In the laboratory, printing is performed by reading the codes and enlarging a trimming range. Therefore, the image circle of a lens is small enough to miniaturize a photographing optical system and a finder system.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a camera having a screen size smaller than the format of the film used, for example 35 mm film.

[Prior Art] In recent years, cameras using 35 mm film have rapidly become fully automated and equipped with functions such as automatic film feeding and automatic focusing, making them extremely convenient in terms of functionality.

[Problem to be solved by the invention] However, with such automation, the camera itself must be equipped with a motor for film advance or a motor for driving the lens, and must also be equipped with a powerful motor capable of supporting such a motor. There is a trend towards increased size and weight due to the installation of power supplies, etc., and although we are responding to this by molding conventional metal parts and simplifying mechanical mechanisms, it is not always possible to make them lighter and smaller. It could not be said that this was fully achieved.

In addition, there are so-called half-size cameras, which are small cameras that use 35mm film, but when using a half-size camera, the screen becomes vertically long if you use the normal film advance method. However, when trying to make the screen horizontally elongated, it was necessary to perform a special film advance different from normal ones, which caused problems such as not being compatible with conventional camera formats.

The present invention utilizes a trimming code system to realize a small-screen camera, and aims to provide a lightweight and compact camera without the disadvantages of the half-size camera described above. It is something to do.

[Means for Solving the Problems] The gist of the present invention is to have a screen size smaller than the format of the film being used, and to copy a trimming designation code corresponding to the screen size onto the film. The camera is characterized by having a recessed stage.

[Function] The camera configured as described above has a film to be used, for example, 3
The image is copied to an area smaller than the full size area of the 5mm format, and is printed according to the imprinted trimming designation code.

Here, a camera with a trimming code will be briefly explained. This type of camera is, for example, JP-A-62-5
No. 0737, and as shown in Figure 8(a), it shows the cropping range (the aspect ratio is equal) as AI, A2°A3 for a full size screen shot on 35mm film. A code is determined in advance with the processing laboratory (hereinafter referred to as the laboratory), and this code is recorded on the outside of the screen on the film, and when printing at the laboratory, this code is read and only the specified trimming range is processed. The system is designed to enlarge and print the image. AI,
A2. Trimming the A3 range will be referred to as trimming 1 mode, trimming 2 mode, and trimming 3 mode, respectively, and each mode is shown in Fig. 8 (b).
l, b2. They are distinguished by a binary code consisting of b3.

As shown in Figure 8 (C), the trimming code is imprinted between the screens of the film using an LED or the like during shooting, and the code Cot is imprinted corresponding to the screen FLI, and the code Cot is imprinted between the screens of the film.
The code CO2 is imprinted corresponding to L2.

In the figure, CR indicates the range in which the code is read in the laboratory. Codes such as cot and CO2 are 17-bit binary codes and are divided into five types of codes as shown in FIG. 8(d). In the figure, the top 3 bits Ct are the trimming code corresponding to FIG. 8(b), and the 1 bit Cs
is the 81-inch print availability information code, the 4-bit Cy is the year information code, the 4-bit Cm is the month information code, and the 5-bit Cd is the day information code.

For Cm and Cd, the year, month, and day data are expressed in binary numbers.If the Cs code is imprinted, the year, month, and day data are read by the laboratory and the print is trimmed. It is possible to incinerate information on dates.

[Embodiment] First Embodiment FIGS. 1 and 2 show the first embodiment, and FIG. 1 shows the exposure state of a film taken by the camera shown in FIG. 2, which implements the present invention. Figure 1(a)
In , Co1 is a trimming code corresponding to the screen FLI, CO2 is a trimming code corresponding to the screen FL2, the trimming codes Cot and CO2 indicate the trimming 1 mode mentioned above, and the screen sizes of the screens FLI and FL2 are exactly the same as the trimming 1 mode. This corresponds to the area printed in the mode, and the dashed line represents the screen size of the full 35 mm format.In other words, the camera in this example only has a screen size compatible with the trimming 1 mode, so it is compatible with the full size camera. The image circle of the lens is also smaller than that of the previous model, making it possible to make each part of the camera, such as the lens, Ventabrism, and mirror, smaller and lighter. In addition, a trimming code corresponding to the screen size is imprinted, and trimming is performed in a laboratory so that unexposed areas outside the screen are not printed.

In other words, the magnification ratio when printing is greater than that of a full-size camera, but the quality of film and photographic paper has recently become higher, so the print size 1 is within the commonly used range.
The image quality is not that bad. FIG. 1(b) is an example of photographing data etc. imprinted on the film, but imprinting will be described later.

Figure 2 is a diagram of the camera in this implementation seen from the back, and (a
) is a diagram with the back cover removed, and (b) is a diagram with the back cover attached.

In FIG. 2, 1 is a finder, 2 is a film cartridge, and 3 is a screen frame, which corresponds to the size of the trimming 1 mode. The broken line is the size of the 35mm full-size screen frame.

4 is a film, 5 is a spool for winding the film, and 6 is a sensor light receiving window for detecting the movement of the film during winding and rewinding of the film. passes. 7
is the back cover, 8 is the LED array for trimming code imprinting (LECO), It 1st stroke (SWI on)
The shutter button starts metering, and the second stroke (SW2 on) starts the release. 10 is the camera power switch (SWMA IN), 11 is the return button (SWREW).
, 12 is a screen blank date imprint selection switch (SWDATE 1) that is turned on to imprint the code for imprinting the date inside the print, and 13 is used to switch information to be imprinted outside the print screen. An off-screen imprint information selection switch (5WDATE 2 ), and 14 a display liquid crystal panel (LCDI).

Although not shown in the drawings, a switch 5WBP for detecting opening/closing of the spine M7 and a switch 5WPTIN for detecting loading of the film cartridge are provided.

Figure 3 shows an example of the configuration of the electric circuit of the camera of this embodiment, where (a) is an overall view, and (b) is an example of the configuration of the motor drive circuit MD shown in Figure (a). .

In FIG. 3(a), BAT is a battery that is a power source for the camera, and when a power switch (SWMA IN) 10 is turned on, power is supplied to each part of the electric circuit shown in FIG. Note that only the DATE part B, which will be described later, is SWM.
20 is a microcomputer (COM) that controls and calculates the camera, which always supplies power regardless of whether A I N 10 is on or off.
~PB7. PE5 and PE6 are logic level input ports, PCφ to PC7, PDφ to PD7 . P.E.
3 and PE4 are respectively logic level output ports,
PEφ to PE2 are input/output ports for serial communication. The input ports PAφ to PA6 each have a switch SWt of the shutter button 9.

SW2. Back cover switch (SWBP) 21. Patrone presence/absence detection switch (SWPT I N) 22.5WDAT
E1 (t 2), 5WDATE2 (13), 5WR
Each switch of EWI 1 is connected.

5WBP 21 is turned off when the back M7 is opened and turned on when the back cover 7 is closed, and 5WPT I N 22 is a switch that is turned on when the film cartridge is inserted into the film cartridge chamber. 23 is a photoelectric conversion element (SPC) for external light brightness photometry for controlling exposure, 24 is a first operational amplifier (OPL), 25 is a logarithmic compression diode, and 5PC2
The voltage value obtained by logarithmically compressing the photocurrent generated in step 3 is 0P.
The output voltage of (24) is the analog-to-digital converter (
ADC) 26 and ADC 26 inputs the first operational amplifier 2.
Convert the output voltage of 4 to a digital value of 8 and convert it to C0M.
Output to 20 boats PBφ to PB7.

The second part is an aperture drive device (DAV), which has a configuration of, for example, a known stepping motor and its driver. DAV
27, the number of narrowing stages is set by 8-bit data output from ports PCφ to PC7 of C0M2O, and
It is assumed that when the 2O boat PDφ is at a high level, the aperture is closed, and when the boat PDφ is at a low level, the aperture is opened.

MGI is a magnet for mirror up, MG2 is a magnet for front curtain running, MG3 is a magnet for rear curtain running, TRI
~TR3 are transistors for supplying current to MGI~MG3, respectively, and R1~R3 are resistors for limiting base currents of TRI~TR3, respectively. Magnet MGI~MG
3 are C0M20 (7) boats PD1 to PD3, respectively.
It is energized when the output of is high level.

M is a motor for winding and rewinding the film and for charging the mechanism; MD is a motor driver for driving the motor M; The operation of motor driver MD will be described later. motor driver md
is controlled by the outputs of ports PD4 and PD5 of C0M2O. 28 is a second operational amplifier (OF2), and a reference voltage Vr from a reference voltage source (not shown) is applied to the normal input.
efl is supplied. The output of the second operational amplifier 28 is connected to the base of the transistor TRLg, and the output of the second operational amplifier 28 is connected to the base of the transistor TRLg.
RL! The emitter of is fed back to the inverting input of the second operational amplifier 28 and is connected to GND via a resistor RLE. Transistor TRL! A light emitting diode LEFLM is connected between the collector and the power supply.

When the second operational amplifier 28 operates normally, the operating point is determined at a point where the non-inverting input voltage and the inverting input voltage are almost equal, so the emitter current of the transistor TRbi is Vr
The value is approximately determined to be efl/RLE. Also, since this is almost equal to the collector current, the light emitting diode LEFL
M is driven at a constant current with a current value of approximately Vrefl/RLE.

PTR is a phototransistor, light emitting diode L
Configure E FLM and photocabra.

RPTR is a resistor, 29 is a comparator, and the normal input of CF2O is supplied with a reference voltage Vre from a reference voltage source (not shown).
f2 is input. The emitter of the phototransistor PTR is connected to GND, the collector is connected to the resistor RPTR, and the other end of the resistor RPTH is connected to the power supply.

In addition, the collector of the phototransistor PTH and the resistor RPTR
The connection point of is connected to the inverting input of CF2O.

The operation of the photocoupler and comparator 29 will be explained with reference to FIG. As shown in FIG. 6(a), the photocoupler has a phototransistor PTR and a light emitting diode L E rL+i arranged opposite to the perforation position of the film in order to detect the movement of the film. With this arrangement, the photocurrent generated by the phototransistor PTR, which receives light from the light emitting diode L E FLM driven by a constant current, increases because the light reaches directly through the holes in the film perforation. In the area between the bars (between the bar rays), the received light level decreases and becomes smaller according to the transmittance of the film, so this change in photocurrent causes the resistance Rl'T to decrease.
This appears as a change in the voltage effect due to R, and the input voltage applied to the inverting input terminal of CF2O changes in magnitude as shown in FIG. 6(b) (A) in accordance with the movement of the film. Therefore, by appropriately selecting the reference voltage Vref2 to be applied to the normal rotation input terminal of CF2O, the CF2O
The output changes as shown in FIG. 6(B), and by counting the output pulses of CF2O, it is possible to know how many perforations the film has moved. The output of CF2O is the boat PE of C0M2O.
5 is input. Returning to the explanation of FIG. 3 again.

30 is a mirror switch (SWMR) that is turned on when the mirror is up and turned off when the mirror drive mechanism is fully charged and the mirror is down, and is manually powered by the C0M2O boat PE6.

31 is a date module (DATE) which has a clock function and a data imprinting control function on film, and as mentioned above, regardless of whether SWMA I N10 is on or off, it is always supplied with power from the battery BAT to operate the clock function. The year, month, and day acid calculates the date, hour, and minute, and displays the results on a liquid crystal display. The liquid crystal displays LCDI and LCD2 are display panels that display the same content, but the liquid crystal display LCDI is placed on the outer surface of the camera back cover for display confirmation, and the liquid crystal display LCD2 is a display panel that displays the same content. For imprinting on the size screen, it is disposed inside the camera, for example, at a film pressure plate portion, facing the film. The display contents of the liquid crystal displays LCDI and LCD2 are as follows.
This is the calculation result of the clock function described above. If C0M2O makes the output of output port PE3 low, 1 is the date data, and if C0M2O makes this high, D
The ATE section 31 displays photographic data of shutter speed and aperture value instead of date data. The shutter speed and aperture value data for display are C0M2O (Bo) - PE
It is assumed that the data is sent through serial communication using φ to PE2.

In addition, in order to actually imprint the display contents of the liquid crystal display LCD2 onto the film, the DATE unit 31 causes the imprinting light emitting diode LEDATE to emit light, but the timing of this emission is determined by the time when C0M2O sets its output port PE4 to a low output. By doing.

Furthermore, the DATE section 31 converts the date data calculated by the clock function into a binary code, and outputs it to an LED driver (LEDR) 32 for imprinting a trimming code, etc. L
EDR32 is a driver that drives the LED array (LECO) 8 for imprinting the above-mentioned trimming code and date code, and when C0M2O sets the output of output port PD6 to high, the trimming code Ct and year of LECO8 are - Drive the corresponding LEDs so as to imprint the month/day codes Cy, Cm, and Cd, respectively. Also LE
DR32 drives the LED corresponding to date print availability information code Cs when C0M2O makes the output of output port PD7 high.

The motor driver MD can be realized with the circuit configuration shown in FIG. 3(b). The motor driver MD has two INI and IN2
There are two control input terminals, one input terminal INI is C0
The output port PD4 of M2O is connected to the other input terminal IN2, and the other input terminal IN2 is connected to the output port PD5. When the inputs of both input terminals INI and IN2 are both low, the outputs of inverters INVI and INV2 are both high, the output of AND gate AND2 is high, and the outputs of other AND gates ANDI and AND3 are both low. becomes. Therefore, since the outputs of inverters INV3 and INV4 both become high level, the PND transistor TRI
Since base current does not flow from the emitter to the base of TR1 and TR12, both are in the off state. On the other hand, since the output of the AND gate AND2 is high, the OR gate OR1
The outputs of both NPN transistors TRI 3 and TRI 4 become high, and base current is supplied to the NPN transistors TRI 3 and TRI 4 to turn them on, so that both ends of the motor M are short-circuited to GND, and the motor M enters a braking state.

The input of one input terminal INI is high, the input of the other input terminal I
When the input of N2 is low, the output of AND gate ANDI will be high, and the outputs of AND gates AND2 and AND3 will be low. Therefore, the output of the inverter INV3 becomes low and the PNP transistor TRI1 is supplied with the base current and turned on, and the output of the OR gate OR2 becomes high and the NPN transistor TR14 is supplied with the base current and turned on. Since the output of the inverter INV4 is high and the output of the OR gate ORI is low, both transistors TR12 and TR13 are off, and the current flows along the path VBAT→transistor TRII→motor M→transistor TR14→GND. Current flows through the motor M in the direction of F in the figure, and this is called forward energization.

When the input voltage of one input terminal INI is low and the input voltage of the other input terminal IN2 is high, the outputs of the AND gate AND1 and AND2 are both low, and the output of the AND gate AND3 is high, so that the inverter I
The output of NV4 becomes low, turning on transistor TRI2, the output of OR gate ORI becomes high, turning on transistor TR13, the output of inverter INV3 becomes high, so transistor TR11 turns off, and the output of OR gate OR2 turns on. Since it is low, transistor TR1
4 is off, the current path is vlIA↑→transistor TR12→motor M→transistor TRI 3→G
The current becomes ND and current flows through the terminal M in the direction R in the figure. This is called reverse energization.

The input of one input terminal INI and the other input terminal IN2
If the inputs of are both high, the AND gate ANDI,
AND2. All outputs of AND3 become low. Therefore, the outputs of inverters INV3 and INV4 are both high,
The outputs of the OR gates OR1 and OR2 are both low, and all of the transistors TRII to TRI4 are turned off, so both ends of the motor M are opened.

Note that R11 to R14 are transistors TRI1, respectively.
-Base current limiting resistor of TR14.

Next, the operation of the microcomputer 20 will be explained according to the flowchart in FIG.

When SWMA I N 10 is turned on and power supply starts to C0M2O, a power-on reset circuit (not shown) performs a reset for a certain period of time, and then C0M
2O starts operation from INIT. Note that each step is represented by (1), (2)...

(1): Zero winding pulse count register (WIND) that initializes each register, flag, and output port.
R), the contents of the brightness information value storage register (BVR) and the EV value storage register (EVR) are initialized to φ, the contents of the TV value storage register (TVR) are initialized to represent, for example, 17125 seconds, and the AV value storage register ( AVR) is initialized with contents representing F5 and F6, for example. In addition, the contents of the patrone detection flag PTF are set to φ, and the output ports PDφ to PD
7 and PE3. Each output of PE4 is set to φ.

(2): Back cover opening/closing switch (S
Check WBP) 21. If the back cover is open, the 5WBP 21 is in the off state, so proceed to (3).

(3): Since the film is not fed while the back cover is open, the flag PTF is set to φ.

(4); Check the first stroke switch SWI according to the level of the input port PAφ.

If the switch is not pressed, the switch is off, so proceed to (5).

(5) Rewind switch (SW) by two-person cover PA6
REW) Check if 11 is pressed. If it is not pressed, the switch is off, so return to (2).

When the back cover 7 is closed while the above-mentioned steps are being repeated, the 5WBP 21 is turned on, so the process proceeds from (2) to (6).

(6): Patrone presence/absence detection switch 5WPTTN22
is checked by input port PA3. If the film cartridge is not loaded, the switch is off, so proceed to (3).

When the first return switch (SWREW) 11 is pressed in the above state, that is, when the film cartridge is not loaded and the first stroke switch SW1 is not pressed, 5WREW11 turns on and changes from (5) to (5). 7
).

(7): Check the patrone detection flag PTF.

Here, since φ is stored in (3), the process returns to (2).

In the state described above, the camera basically does nothing.

Next, a case will be described in which automatic film loading is performed with the film cartridge loaded and the back cover 7 closed.

In this case, the process proceeds to (6) when the closure of the spine M7 is detected in (2), and since 5WPTIN22 is on because the film is being loaded into the cartridge chamber,
Proceed to (8).

(8): Check the patrone detection flag PTF.

Here, since (3) is still set to φ, since it is φ, (
Proceed to 9).

(9) Second winding pulse count register WINDR
Store 24 in . 24 means 3 frames with 8 counts (8 perforations) as one frame, and the count number for performing color advance for 3 frames is set in the register WINDR. and,
By counting down from 24 and counting until φ is reached, 24 pulses are counted.

(10); Film winding subroutine WI ND
call.

The film winding subroutine WIND will now be explained according to the flowchart shown in FIG.

(51): Make the output of output port PD4 high and PD5 low. As a result, the motor driver MD operates to energize the motor M in the forward direction, and starts winding the film.

(52): Start the film movement detection timer.

(53): Comparator (CP) from human port PE5
Monitor the output of 29 and check whether it is high level or low level. If high, go to (55); if low, go to (5)
Proceed to 4).

(54): Check whether the film movement detection timer has expired. If it has not finished, return to (53) and check that the output of CP29 becomes high.

In this way, it waits for the output of CP29 to become high level within a predetermined timer period. And when it comes to high (55)
Proceed to.

(55): Restart the film movement detection timer.

(56): Comparator cp2 from input port PE5
Monitor the output of 9 and check whether it is low level or high level. If low, go to (58); if high, go to (57)
).

(57): Check whether the timer for film 8 motion detection has ended. If it has not finished, return to (56) and check that the output of CP29 becomes high.

In this way, the process waits for the output of the CP29 to change to low within a predetermined timer period, and when the output changes to low, the process proceeds from (56) to (58).

(58): Winding pulse count register WIN
Subtract 1 from the contents of DR.

(59) : (58) 1. : WIND with Te 1 subtracted
R(7) Check whether the content has become φ. (
9), 24 is stored in WI NDR in advance, so the first time WI ND is called (59)
Since the content of WINDR is 23 at the time of passing through, the process returns to (52).

In this way, if the routine from (52) to (59) is repeated 24 times, the content of WINDR becomes φ, so (60
).

(60): Both outputs of output ports PD4 and PD5 are set to low. As a result, the motor drive MD puts the motor M in a braking state and the autoloading ends. As explained using Fig. 6, the change in the output level of the CP29 corresponds to the number of perforation movements when the film moves. In other words, automatic loading for three frames is performed.

Note that if the timer ends in (54) or (57), the process proceeds to (61), but the flow from (61) onwards will be explained later and will be returned to FIG. 4.

(11): Now that the film has been loaded,
Set the contents of patrone detection flag PTF to 1. Therefore, even if you go through step (8) again, (9), (
10), so there is no need to autoload the same film over and over again.

Next, the operation when the first stroke switch SW1 is turned on will be explained. In this case step (4)
SWI ON is detected at , and the process proceeds to (12).

(12): Store the brightness information value A/D converted by the input ports PB7 to PBφ in the register BVR.

(13): Register S that stores film sensitivity information set by a film sensitivity information setting member (not shown)
The contents of VR are subtracted from the contents of register BVR and stored in EV value storage register EVR.

(14): Register T that stores shutter speed information set by a shutter speed setting member (not shown)
The contents of VR are subtracted from the contents of register EVR and stored in register AVR for storing aperture value information.

(15): Since the TV value and AV value have been determined, they are serially transferred to the DATE section 31 using the output ports PEφ to PE2.

(16): Check whether the off-screen imprint information selection switch 5WDATE2 is on/off from the input port PA5. If it is off, go to (17); if it is on, go to (18).

(17): Since 5WDATE2 is off, the output of the output port PE3 is set to low so that the off-screen imprint information becomes date information, and the process proceeds to (19).

(1 [1): 5WDATE2 is on, so output port PE3 is set so that off-screen imprint information becomes exposure data information.
Set the output to high and proceed to (19).

(19): Second stroke switch SW2 on/
Check off. If it is off, the process does not proceed to the release sequence, so the process returns to (2).

If it is turned on, the process advances to (20) to move to the release sequence.

(20): Set the output of output port PCI to high.

As a result, the tensioning magnet MGI is energized and mirror-up is started.

(21): The human powered boat PE6 monitors and waits for the mirror up completion switch SWMR to turn on.

(22): Mirror up is completed, output port P
Make the output of DI low and cut off the power to MCI.

(23): The aperture value information stored in the register AVR is output to PC7 to PCφ, and the aperture value information is transmitted to the aperture control device (DAV) 27.

(24): Set the output of output port PDφ to high.

With this, the DAV 27 starts narrowing down.

(25): Wait for a predetermined narrowing down time.

(26): Since the shutter speed information stored in the register TVR is an apex number, it is converted into real-time information.

(27): Set the output of output port PD2 to high.

As a result, the first curtain control magnet MG2 starts to be energized, and the shutter first curtain starts running.

(2B): Wait for a predetermined M02 energization time.

(29): MG2 sets the output of output port PD2 to low.
Cut off the electricity.

(30): The actual time of the shutter seconds converted in (26) is counted.

(31): Set the output of output port PD3 to high.

As a result, the trailing curtain control magnet MG3 is energized and the shutter trailing curtain starts running.

(32): Wait for a predetermined MG3 energization time.

(33): MO with the output of output port PD3 as low
Cut off the power to S.

(34): Check the contents of patrone detection flag RTF. If the film is loaded, the PTF is (
Since it is 1 in 11), proceed to (35).

(35): Screen blank date imprint selection switch (SWD)
Check ATEI)13. If SWDATEI is off, it is determined that imprinting the date on the screen is prohibited, and the process proceeds to (36).

(36): Output port PD6. PD7. The output of PE4 is set to high, low, and high, respectively. When PO2 is high, the LED driver (LEDR) 32 lights up the LED 7 ray (LECO) 8 for imprinting the trimming code, and imprints the trimming code, etc. However, since PO7 is low, the date print availability information code Cs is not imprinted. Don't get involved. Also, since PE4 is pie, the DATE unit 31 lights up the light emitting diode LEDATE for imprinting and imprints the data outside the screen.The data imprinted outside the screen is (1
This is either the date or exposure information determined by 5WDATE2 in step 6).

(37): Wait for a predetermined LED lighting time required for imprinting.

(38): Output port PD6. Imprinting is completed by setting all the outputs of PD and PE4 to low.

(39): @Up pulse count register WI
Store 8 (8 perforations for 1 frame) in NDR.

(4G): Call the winding subroutine WIND. The contents of WIND were explained in (10),
Since we will start with WINDR-8, we will wind up one full frame of 35mm format. It is also assumed that mechanisms such as shutters are charged at the same time.

(41): Check the state of the SWMR 30 from the input port PE6 to see if charging is completed and the mirror is down. If the SWMR 30 is off, it is assumed that charging has been completed, and the process proceeds to step (42). However, if the SWMR 30 remains on, it is assumed that normal operation cannot be performed due to a failure or a defective battery, and the operation is stopped.

(42) Wait for SW2 of the Nirelys button to be turned off.
When it is turned off, the process returns to (2) and the release sequence ends.

If 5WDATE 1 is turned off at (35) and imprinting of the date on the screen is permitted, then (43) is passed instead of (3B) in the above sequence.

(43): Output port PDP, PD7. All outputs of PE4 are set to high. The difference from (36) is that PO
7 is high, the LEDR32 imprints the trimming code, etc., and at the same time prints the date printability information code Cs.
It is also to imprint.

Also, in step (34), the patrone detection flag P
If the TF is φ, that is, if the release is blank with no film inserted, (34) to (44)
).

(44): Output of output port PD4 is high, same PD5
The output of is set to low. This allows the motor driver MD
starts energizing the motor M in the forward direction. Since there is no film in it, there is no need for imprinting, and there is no need to detect film winding, so the mechanism is simply charged.

(45): Check SWMR30 using input port PE6. After the mechanism is fully charged, the SWMR
Wait for 30 to turn off.

(46): Since charging is completed, output port PD4
The outputs of PO5 and PO5 are set to low, the motor M is set to the brake state, and the process proceeds to (42) to perform the same operation as when film is loaded.Meanwhile, the winding subroutine W
If the film stops during IND,
In the figure, since the timer ends at (54) or (57), the process proceeds to (61) and rewinding of the film is started. Also, when the rewind switch 5WREW11 is pressed, the on state of 5WREW11 is detected at (5) and the process proceeds to (7), and if the PTF level is 1, that is, the film is loaded, the process also proceeds to (61) and the film is loaded. Start rewinding.

(61): Set the output of output port PD4 to low and the output of output port PD5 to high. As a result, the motor driver MD energizes the motor M in the reverse direction, and rewinding of the film is started.

(62): Start the film movement detection timer in the same way as when winding the film.

(63): Comparator (CP) from PE5
) Monitor the output of 29 and check whether it is high level or low level. If high, go to (65), if low, C
Proceed to step 64).

(64): Check whether the film movement detection timer has expired. If it has not finished, return to (63) and check that the output of CF2O becomes high. In this way, the process waits for the output of CF2O to become high within a predetermined timer period, and when it becomes high, the process proceeds to (65).

(aS): Restart the film movement detection timer.

(Ii6): Monitor the output of CF2O from the human powered boat PE5 and check whether it is low level or high level. If it is low, return to (62). If high, proceed to (6)).

(67): Check whether the film movement detection timer has expired. If it has not finished, return to (66) and check that the output of CF2O becomes low. In this way, it waits for the output of CF2O to become low within a predetermined timer period.

While the film is being rewound in this manner, the output of CF2O changes from high to low to low within a predetermined period of time, so that a loop occurs between (62) and (66).

When the film rewind is completed, the light emitting diode L E
Since the perforation of the film no longer passes between the photocoupler consisting of FLM and phototransistor PTR, the output of CF2O does not change, and (
At step 64) or step 67, the timer ends and the process proceeds to step 68.

(88): Waiting for a time to completely wind the film into the cartridge up to the tip.

(+19): The outputs of the output boats PD4 and PD5 are both set to low, and the motor M is braked to end the rewinding operation.

(7G): Check whether SWMR30 is on/off from input port PE6. If it is in the on state, charging is not completed and the process goes to (71) for charging; if it is in the off state, charging is completed and the process goes to (74).

(71): The output of the output port PD4 is set to high and the output of PD5 is set to low, and the motor M is energized for forward rotation to perform charging.

(72): Check SWMR30 from manual port PE6 and wait until it turns off.

(73): The outputs of the output boats PD4 and PD5 are both set to low, and the motor M is put into the braking state.

(74): After rewinding and charging, wait for the spine M7 to be opened and the film taken out, 5W.
When BP21 is turned off, the process returns to (1).

Second Embodiment Figure 7 shows a second embodiment of the camera according to the present invention. In the example, the trimming 2 mode is used and the corresponding screen size is set. Therefore, this embodiment can be made lighter and more compact than the camera of the first embodiment.

The names of the parts, electric circuits, and flowcharts are the same as in the first embodiment, and Figures 7(a) and 7(b) are similar to those in Figure 1(a).
) and (b), and FIG. 7(c) corresponds to FIG. 2(a), and since they differ only in screen size, explanations of these parts will be omitted. As the trimming designation code Ct, a code instructing the trimming 2 mode is always imprinted.

[Effects of the Invention] As explained above, according to the present invention, by performing photography only on the cropped size, which is a smaller screen size than the film used, for example, the 35 mm full size, a full size camera can be used. Compared to the above, the image circle of the lens is smaller, and the photographing optical system, finder optical system, etc. can be downsized, and a compact and lightweight camera can be provided. Of course, when printing, the unexposed area is trimmed by reading the trimming designation code, and although the stretching magnification is a little higher than that of full-size format, due to the high performance of recent films, when viewing the print. There is almost no sense of inferiority. You can use 35mm film, which is widely used all over the world, so there is no problem with film availability, and it can be used in portrait format like half format! There is no basis for this, and it is the same as the size of several sheets, so there is no need to worry about giving the user a sense of strangeness or confusion.

On the other hand, if the lab reads the code and imprints the date information on the screen when printing, it is outside the shooting screen, and if you ignore the trimming code and print as a normal 35mm full size, the print screen Because it is possible to imprint shooting information on the inner film surface,
To prevent the conventional imprinting of photographic information onto the screen from becoming completely unreadable depending on the color and brightness of the photographic subject at the imprinting position, and to ensure that the information is imprinted in a state where it can be reliably read. Can be done.

[Brief explanation of the drawing]

FIGS. 1(a) and (b) are diagrams showing the exposure state of a film photographed by a camera according to the first embodiment of the present invention, and FIGS. FIGS. 3(a) and 3(b) are circuit diagrams showing an example of the configuration of the electric circuit, FIGS. 4 and 5 are flowcharts illustrating its operation, and FIG. 6(a). (b) is a diagram explaining the movement detection of film perforations, FIG. 7 shows the second embodiment, (a), (
b) is a diagram showing the exposure state of the film, (C) is a rear view of the camera, Figures 8 (a), (b), (C),
(d) is a diagram for explaining a camera having a conventional trimming code. 1... Finder 2... Cartridge 3... Screen frame 4... Film 5... Spool 6... Film movement detection window 7... Back cover 8... LED for imprinting trimming code Array (L
ECO) 9... Release button 10... Power switch (swMAIN) 11...
・Rewind button (SWREW) 12...Screen blank date imprint selection switch (SWDA
TE 1) (SWDATE2) Figure 1 (0) (b) Other 4 people Figure 2 (b) Figure 6 CG) (b) Figure

Claims (1)

[Scope of Claims] 1. A camera having a screen size smaller than the format of the film used, and having means for imprinting a trimming designation code corresponding to the screen size onto the film. 2. The camera according to claim 1, wherein the film feed amount per frame corresponds to the format of the film used. 3. Equipped with an imprinting means that enables imprinting of photographic data on the printable surface when printing in the full format of the film used outside the screen size range and without following the trimming specification code. The camera according to claim 1 or 2, characterized in that: 4. The camera according to claim 1, 2 or 3, wherein the screen size has the same aspect ratio as the format of the film used.