JPS606494B2 - Light emitting circuit of data imprinting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a light emitting circuit for a data imprinting device that imprints data such as date, time, serial number, etc. onto film using a light emitting device triggered by a synchronizing contact of a camera, and in particular, the operation of the synchronizing contact. The present invention relates to a light emitting circuit for a data imprinting device equipped with a manual imprinting means so that imprinting can be performed at any time regardless of the data imprinting device.

In recent years, devices have been provided in which a data imprinting device is built into the back cover of a camera, and data imprinting is possible by replacing the back cover.

Many of these data imprinting devices use a flash device as their light source, and in order to cause the flash to emit light in synchronization with the shutter release of the camera, the data imprinting device's synchronization code must be connected to the camera's synchronization terminal. The data is imprinted onto the film at the same time as the camera is connected. Generally, the accessory shoe of the camera is provided with a direct connection synchronization terminal in parallel with the synchronization terminal, and a so-called synchronization terminal is connected to the synchronization contact inside the camera by attaching a flash device for photography to the shoe. A hot shoe is provided. Such a camera is convenient because it is possible to take flash photography and also to take pictures of the sunrise at the same time. However, in the above-mentioned apparatus, since the trigger of the light emitting device for data imprinting is performed by the operation of the synchronization contact of the camera, it is impossible to imprint data at any arbitrary position on the film at any arbitrary time. Ta.

In order to be able to record images at any time, a separate manual button for imprinting has been proposed, and a manual button for only imprinting has been proposed, in addition to one for imprinting using synchronization contacts. If you are using a data imprinting device equipped with a manual imprinting button as described above and a photographic flash device (stroboscopic device), and the strobe device is ready to emit light, operate the manual imprinting button. When data is imprinted, the camera's synchro terminal and hot shoe contact are connected in parallel, so when the imprint light emitting device is triggered, the strobe device will also be triggered and fire. It was inconvenient.

An object of the present invention is to prevent such malfunctions (erroneous light emission), and a unidirectional element for preventing malfunctions is provided in the trigger circuit of the data imprinting device.

The present invention will be explained in detail below with reference to the drawings.

FIG. 1 is a perspective view of a camera to which the data imprinting device of the present invention is applied, showing the main body of the camera, 2 a back cover for data imprinting, 3 a power switch for the data imprinting device, and 4
5 is an exposure amount switching switch, 5 is an indicator window that displays the charging voltage value of the strobe device and the completion of imprinting, 6 is a date set dial, and 7 is an indicator for the date set dial.
8 is the month set dial, 9 is the index for the month set dial,
Turtle Q is the year set dial, 11 is the index for the year set dial, 12 is the battery storage case, and quantity 4 is the synchro cord that can be connected to the camera's synchro terminal 13, which is installed on the camera body 1. It has a terminal g that can be connected to the terminal j of the synchro terminal 13 and a terminal h that can be connected to the terminal i of the synchro terminal 13. This is the manual imprint button that is used when imprinting at any time.

51 is a cover of the imprinting device.

The detailed configuration of the data imprinting device is as shown in FIG.

Next, the present invention will be explained in more detail using FIG. 2, but the same elements as those in FIG. 1 are given the same reference numerals and the explanation will be omitted. In FIG. 2, reference numeral 15 denotes a click gear fitted to the set shaft 14, and the tip 14a of the set shaft 14 is inserted into the hole 6a of the date set dial 6 with iron. A click gear 17 is iron-coupled to the set shaft 16, and the tip 16a of the set shaft 16 is inserted into the hole 8a of the month set dial 8.

19 is a click gear connected to the set shaft 16, and the tip 18a of the set shaft 18 is the hole 10a of the year set dial 10.
It is iron-clad.

20' is a gear 21 iron-coupled to a hollow set shaft 22 and an intermediate gear meshed with gear 19; 28 is a pond plate having a battery chamber 27 and bearings 23, 24, 25, and 26; 29 is a light guide path; A discharge tube 32 is provided within this light guide path.

30 is a reflecting mirror, 31 is a diaphragm plate having a pinhole, 33
The light from the discharge tube 32 is transferred to the film 46 as a photosensitive material.
A reflector plate 34 is a neon tube as an indicator light provided in a strobe device to be described later, and the neon tube 34 is provided so as to be visible to the photographer through the indicator light window 5. . Reference numeral 35 denotes a phototransmission fiber east installed on the pressure platen 45, which is a plate-shaped piece cut perpendicularly to the longitudinal direction of the optical transmission line overall east, and the light exiting the pinhole passes through the data films 37, 39, 40, the image is formed on one end of the optical transmission fiber east, and the image is transmitted onto the film 46 according to the principle of image transmission of the optical transmission fiber east, and the data film 37,
This prevents the quality of the image from deteriorating due to the pressure plate 45 between the film 46 and the film 46.

36 is a ghost prevention mask attached to the light transmission line east 35, and 37 is a disk-shaped data board fixed to one end of the set armor 14 extending through the main plate 28, for example, a film. ``A translucent data character area 37a is provided in the surrounding green area of this opaque data board 37 as shown in the third figure, and this data area 37a contains information corresponding to the number of days in one month. Although numbers 1 to 31 are provided, only some of the numbers are shown as examples in FIG.

38 is a film for adjusting the amount of light transmitted which is closely attached to the data board 37, and 39 is a data board fixed to the set shaft 22 extending through the main plate 28. A data character portion 39a is provided on the opaque base portion 39c as shown in the third figure, and this data portion 39a is provided with numbers corresponding to arbitrary years. Only the numbers up to are shown for illustrative purposes.

Further, the data board 39 is constituted by a film consisting of a transparent portion 39b shown by diagonal lines and an opaque data portion 39c. The data board is fixed to the set shaft 16 that extends through the hollow part of the set shaft 22, and the data board 40 has a third translucent data section 40a in the surrounding green part.
As shown, it is provided on an opaque base 40c, and this data section 40a is provided with numbers from 1 to 12 corresponding to the number of months in a year.

In addition, a transparent portion 4 is located at the center of the data board 40 indicated by diagonal lines.
The transparent portion 40M is provided at a position facing the data portion 39a of the data board 39, and the data portion 40a is provided at a position facing the transparent portion 39b of the data board 39. 41, 42, 43 are springs; 44 is a screw for fixing the base plate 28 via the film holding plate 45 and the spring 41.

Reference numeral 45 denotes a film holding plate, on which the above-mentioned phototransmission fiber east 35 is provided.

The light guide path 29, reflecting mirror 30, etc. shown in FIG. 2 are provided on the back side of the camera body 1 as shown in FIG. Incidentally, in FIG. 4, reference numeral 47 indicates a blocking plate for blocking the light guide path. Further, in order to improve the quality of the image, the data substrates 39 and 40' are provided in close contact with the mask 36 provided on the optical fiber east 35. Also, Koden Textile East 35 has pressure signboard 4.
5 is held so that the side facing the film 46 is flush with the surface of the pressure plate 35. 5. With the manual imprint button, "28 by pressing button 50"
The saddle pieces 52, 53 provided above contact and are conductive.

Further, 51 is a cover that protects the internal mechanism of the data imprinting device. FIG. 5 is a circuit diagram showing an embodiment of the data imprinting device according to the present invention, in which 54 is a light emitting circuit of the data imprinting device, 55 is a camera circuit, and 56 is a general strobe device circuit.

In FIG. 54, 35, Tr, , C, , T are known circuits forming a converter, Tr is a pnp transistor, C is a capacitor, 35 is a battery, 3 is a power switch, The power switch 3 has a movable piece 3a and fixed contacts 3b and 3c. The emitter electrode of the Tr is connected to the positive electrode of the battery 35, and the collector electrode is connected to the negative electrode of the battery 35 via the primary winding of the transformer T and the power switch 3.
Further, the base electrodes are connected to the positive electrode of the battery 35 via the transformer T, other primary windings, and capacitor C, respectively. C2 is a smoothing capacitor connected to the secondary winding of transformer T, R is a resistor connected to capacitor C2, and D is a rectifier diode whose anode electrode is connected to the primary winding of transformer T. , C3 is a capacitor connected to the cathode electrode of the diode D, and stores luminescent energy. R2, R3, R4 and 34 are capacitors C.
3 is a detection circuit for detecting the charging voltage value accumulated in 3, R2, R3, and R4 are resistors, and 34 is a neon tube. R
5 is a resistor connected between the capacitor C3 and the fixed contact 3c of the power switch 3, C4 and T2 are a capacitor and a transformer forming a trigger circuit, and the output end of the transformer T2 is connected to the trigger electrode of the discharge tube 32. has been done. R6 is a current limiting resistor, 4 is a mist output selector switch connected in parallel with resistor R6, 5 is a manual button provided to enable imprinting whenever necessary, and 52 and 53 are manual copying. This is an included supplement. D2 is manual imprint contact piece 5
A strobe malfunction prevention diode is provided between 2 and 53 and synchronization cords g and h, and g and h indicate terminals at the tips of the synchronization cords. Next, the camera 55 will be explained. Reference characters i and j are synchro terminals 13 corresponding to the synchro cord terminals g and h, and S is a synchro contact provided on the camera.

k,1 indicates a terminal of a shoe for attaching a strobe device provided on the camera. Next, the strobe device 56 will be explained. S,o, is the main switch, E,o, is the battery, Tr,o, is the pnp transistor, C,o, is the capacitor, and the emitter electrode of Tr,o is connected to the positive electrode of the battery E,o, The collector electrode is connected to the primary winding of the transformer T,o, and the base is connected to the positive electrode of the battery E, through the other primary winding of the transformer T,o and the capacitor C side. .The R side is connected to the Tr via the transformer T side.
,. , is connected to the base of. D.o. is a rectifying diode whose anode electrode is connected to the primary winding of the transformer T,o; "C,o2 is a capacitor connected to the cathode of the diode ○,o, and stores luminous energy;
R, o2, R, o3 are trigger capacitors C. 3. Circuit resistance for charging ``The C side is the trigger capacitor, the T side is the trigger transformer, and when current flows through the primary side, a high voltage is generated on the secondary side, making the discharge tube conductive.
FT, o, is a discharge luminous tube, Ne, o, is a display tube that lights up to display when CM is charged with a predetermined amount of electricity, and R, M are resistances for adjusting the lighting voltage of the display tube. Further, m and n are leg terminals connected to the camera side shoe parts 1 and k. In addition,
D. 2 is a malfunction prevention diode for preventing the trigger circuit of the data imprinting device from operating when a test flash is fired by the manual button 59 of the strobe device;

2 is a test light emitting switch.

Next, the operation of the apparatus according to the above configuration will be explained below using FIGS. 1 to 5.

First, before photographing, adjust the set dials 6, 8, 10 to the desired year and month mark, and each data board 37, 39, 40
is also adjusted to a predetermined position in conjunction with this.

In other words, when the date set dial 6 and the index 7 match the desired date, the data board 37 rotates via the shaft 14 by an amount corresponding to the amount of rotation of the date set dial 6, and the date set by the date set dial 6 is rotated. Data equal to the date of When the date/date board 4Q is rotated via the shaft 16 by an amount corresponding to the amount of rotation of the month set dial 8, the month set dial 81 causes the number in the data section equal to the set month to be illuminated. It is set at the position of the transparent window 36b of the ghost prevention mask 36 provided on the fiber east 35.
Furthermore, when the year set dial ear 0 and the index 11 are matched with the desired year, the gear blinds 9, 20, and 2 rotate in respective predetermined directions via the shaft 18.
is rotated via the shaft 22 by an amount corresponding to the amount of rotation of the year set dial 10, and the number in the data section equal to the year set by the year set dial 101 is set to 38.
Translucent window 36 of ghost prevention mask 36 provided above
It is set at position c.

After that, when the power switch 3 is turned on and the movable cross section 3a is switched to the fixed contact 3b side to cause the converter to oscillate, charging of the capacitor C3 starts.The charging voltage of the capacitor C3 reaches a predetermined potential. When the film 46 is in color, the neon tube 34 lights up, informing the photographer through the window 5 that the flash device for imprinting is ready.When the film 46 used is color, the switch 4 is closed; When the film 46 used is a black and white film, the switch 4 is set to open and the amount of light emitted is reduced.When the shutter (not shown) of the camera is fully opened and the synchro switch S is closed, the trigger is activated. The charge of the capacitor C4 flows into the circuit D2-g-i-S, -j-h-L, and the discharge tube 32 emits light.The light emitted from the discharge tube 32 is
It passes through the pinhole of the diaphragm plate 31 and is reflected by the reflector 30.
The direction is changed, and the preset numbers on the data portions 37a, 39a, 40a of the data boards 37, 39, 40 are transmitted through, and the images thereof are formed on the optical fiber east 35. The image is then transmitted through the optical fiber bundle 35 and reaches the back surface of the film 46. Therefore, on the back side of the film 46, the set year, month, and day are imprinted on the date set dial 6, month set dial 8, and year set dial 01. The charge charged in the capacitor C3 is discharged through the discharge tube 32, and the charging voltage value of the capacitor C3 rapidly drops. Therefore, the neon tube 34 connected in parallel to the capacitor C3 goes out immediately after the discharge tube 32 emits light. Displays that data imprinting is complete. On the other hand, regardless of the imprinting using the L synchro contact, if you wish to imprint at any time, press the manual imprint button 50 and the manual
3 contacts and the trigger circuit of C4, T2, 52, 53 is closed, the electric charge of C4 is discharged through T2, a high voltage is generated on the secondary side of T2, and discharged through the trigger of the discharge luminous tube 32. The arc tube 32 emits light.

On the other hand, when using the strobe device 56 together, connect the terminal 1 and the m terminal by inserting the strobe device mounting foot part 57 of the camera.
and n are connected.

In the above state, the main strobe device is also switched S, o,
When turned on, the main capacitor C is charged with electric charge, similar to the circuit of the data imprinting device, and the indicator lights Ne, o, turn on to indicate that charging is complete. In the above state, the camera shutter (not shown) When the sync switch (not shown) is turned on, the synchronizing contact S is turned on, and as mentioned above, the discharge luminous tube 32 of the data imprinting device emits light and imprints the predetermined data.Meanwhile, the strobe device's S, is also turned on. Therefore, the terminal 1-m is connected to the C side via K-n, T
When the side is short-circuited, the trigger circuit is activated and the discharge luminous tube FT,
. , emits light. On the other hand, when the strobe device is attached and the data imprinting device's manual imprinting button is pressed with the capacitor C charged on the skin, it says "For example, if there is no diode port 2 to prevent malfunction, the data imprinting device's trigger circuit C4, L , 52, 53 are short-circuited, the trigger circuit is activated, and the discharge luminous tube 32 emits light. At the same time, the trigger circuit C, o3F T, o2 of the strobe device is connected to the terminals im, k-n and g-i, h-i. via 5275
3, the tri-J-circuit is activated, causing a malfunction in which the strobe device emits light when it is not necessary to emit light.

In order to prevent such malfunctions, a diode ○2 is inserted between the synchro terminal and the manil bush as shown in the figure, and this diode has a reverse impedance for the current from the trigger circuit of the strobe device 56. If the connection is made as shown in FIG.

, does not emit light. On the other hand, the diode D2 is connected in the forward direction to the trigger circuit of the data imprinting device 54, so that the trigger current on the 54 side is not cut off by D2 when the synchro contact S of the camera is turned on. Also, a test switch S, provided on the strobe device 56.

Turn on 2 and test. When emitting light, switch S, o
Due to the reverse impedance on the diode D side inserted between 2 and the foot contact n, the trigger circuit on the imprinting device side is not triggered when the test flash switch S side of the strobe device is turned on, and the switch S,.

2, the discharge tube 32 of the imprinting device does not emit light.

On the other hand, the diode D is connected in the forward direction to the trigger circuit of the strobe device 56, and the trigger current on the 56 side is not cut off by the D female when the synchronization contact S of the camera is turned on. As described above, in the data imprinting device of the present invention, data can be imprinted using the synchronization contact of the camera, and data can be imprinted at any time by operating the manual switch provided on the data imprinting device. When the device is used in conjunction with a strobe device, a simple circuit configuration prevents the strobe device in the flashing state from emitting unnecessary light due to the manual imprinting operation of the data imprinting device. Furthermore, since the data imprinting operation is disabled during the test flash operation of the strobe device, it completely prevents malfunctions that tend to occur when the two devices are used together with the camera. It can be done, and the effects are great.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a camera to which the data imprinting device of the present invention is applied, Fig. 2 is a perspective view showing the detailed configuration of the data imprinting device of Fig. 1, and Fig. 3 is the configuration of the data imprinting section. FIG. 4 is a sectional view of the camera shown in FIG. 1 when the data imprinting device is attached, and FIG. 5 is a circuit connection of an embodiment in which the data imprinting device and strobe device according to the present invention are used in conjunction with the camera. It is a diagram. 50...Manual imprinting button, 54...Natar imprinting device, D2...diode for preventing erroneous strobe light emission, 55...camera, Sr...-synchro contact,
56... Strobe device, S. 2... Strobe test flash button, D side... Diode to prevent data imprinting malfunction. Younger brother I figure 2 figure 3 figure 4 younger brother figure 5

Claims (1)

[Claims] 1. A light emitting means, a trigger circuit that activates the light emitting means when a synchronizing contact of the camera is closed, and a trigger circuit that is connected in parallel to the synchronizing contact between the trigger circuit and the synchronizing contact, and the synchronizing contact can be activated by manual operation. In a data imprinting device having a manual switch means for operating the trigger circuit and the light emitting means independently, when the data imprinting device and the photography flash device are actuated by a synchronization contact of the camera, the manual switch means 1. A light emitting circuit for a data imprinting device, characterized in that a diode for preventing malfunction of a photographic flash device due to operation is provided between the manual switch means and a synchronization contact of a camera.