JPH0687146B2 - Film data recorder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an unexposed film in a roll film production process for a photographic camera, including a frame number, a brand, an emulsion number, a bar code and other characters and symbols (hereinafter, The present invention relates to a recording apparatus that optically burns data), and particularly to a recording apparatus that prevents a printing position shift.

[Background of the Invention]

This type of device is a device for slitting an unexposed film coated with a photosensitive material to a predetermined width, forming a feed hole (perforation), and then performing data printing while conveying the film at a predetermined speed. Is.

However, in the case of printing data in this apparatus, after detecting the arrival of the film at the printing position, the data to be printed is read from the memory and the printing operation is performed. It takes a considerable time to print the data, and there is a risk that the printing position may be displaced if the film transport speed is set higher than a predetermined value. Further, if the film transport speed changes, there is a possibility that the intervals between the burning positions may be different.

[Object of the Invention]

An object of the present invention is to prevent the reading time of data required for burning from the memory from affecting the positional accuracy of burning.

[Structure of Invention]

To this end, the present invention provides a film data recording apparatus for recording data such as frame number, brand, emulsion number, and bar code on a photographic film, and a film conveying means capable of conveying the photographic film, The film recording position detecting means for detecting the recording position of the data and outputting a detection signal, the storing means for storing the data, and the read signal for reading the data stored in the storing means A read signal output means capable of outputting to the storage means, a recording means for recording the data on the photographic film, a temporary holding of the data read from the storage means by the read signal, and the holding Recording control means for controlling the recording means in synchronism with the detection signal based on the data, and the storage by the read signal. Read timing of the data from stage to said recording control means is configured such that before the time from the control of said recording means is performed in synchronization with the detection signal.

〔Example〕

Examples of the present invention will be described below. First, FIG. 1 is a diagram showing an outline of the whole. Unexposed film 1
Is transported by the guide rollers 2 and 3 at a predetermined speed in the arrow A direction while being wound around the sprocket 4. At this time, the feed hole of the film 1 is locked to the claw 4a of the sprocket 4. The shaft of the sprocket 4 is connected to the torque motor 5. Since this torque motor 5 has the torque characteristics as shown in FIG. 2, by applying a rotational force to the sprocket 4 in the direction opposite to the film transport direction by the motor 5, the torque of the sprocket 4 can be reduced, for example. Stable back tension is applied even when stopped. Therefore, since the claw 4a of the sprocket 4 is locked at the edge of the film 1 on the side opposite to the feeding direction in the feeding hole, the film 1 is accurately conveyed at the conveying speed by the pulling force pulled on the downstream side.

Reference numeral 6 is a data input device, which comprises a type setting device 61 (sensitivity, brand, size, etc.), a data output device 62 for characters and symbols, and a data editing device 63. The data edited by this data editing device 63 is , RAM and the like.
The data written here is read out by being addressed by a signal from the access address generator 8 and once latched by the control circuit 9, when the burning timing pulse arrives, the film 1 is burned in the burning portion. Burned into.

This burned part includes a group of LEDs 10 whose lighting is individually controlled to be turned on and off by a control circuit 9 and respective LEs thereof.
It is composed of a light guide member 12 such as a fiber that individually guides the light from D to the lens 11, and the ends of the light guide member 12 are arranged in a line at a pitch of, for example, several millimeters. The direction of this arrangement is a direction orthogonal to the transport direction of the film 1. Then, when the film 1 is located on the sprocket 4, the printing on the film 1 is performed in a dot image in synchronization with the conveyance.

Reference numeral 13 is a rotary encoder which is connected to the shaft of the sprocket 4 and detects its rotation, and the access address generator 8 outputs an address signal in response to a pulse from the encoder 13. The control circuit 9 also receives the output from the encoder 13 and outputs a light emission command pulse (burning timing pulse).

Next, the operation will be described.

(1). About writing data to the memory 7: As shown in FIG. 3, the data writing to the memory 7 is performed according to the length of the film 1 to be printed (12 shots, 24 shots, 36 shots).
It depends on the number of shots. ), Write data for all the portions in the length direction of the position to be burned.
That is, the positions where the symbols or the like should be actually burned are at predetermined pitches or at several positions, but in the present embodiment, the dot information "1" is stored in the address portion of the memory corresponding to the positions where the symbols or the like should be written. , And dot information “0” is written in the other address portion. As a result, the data "1" and "0" of all the portions from the beginning to the end in the longitudinal direction regarding the data-burned portion of the film are written into the memory 7 in order from the youngest address.

This writing is performed by the data input device 6, but when a plurality of burning devices are installed, one data input device 6 can be shared by the other burning devices.

Further, at the time of reading, it is sufficient to count the travel detection pulses from the rotary encoder 13 and sequentially access the addresses of the memory 7 from a younger address for each predetermined pitch travel amount. Access address generator 8
Can be configured with simple hardware, and thus the reading speed can be increased.

(2). Regarding Burning: In this embodiment, when burning data, data to be burned later is read from the memory 7 in advance and latched in the control circuit 9 so that a burning command pulse for the data is generated. I try to burn it when it arrives. Fourth
The figure is a timing chart thereof, and the data preparation pulse is a pulse for latching the data read from the memory 7 in the control circuit 9.

At the time of this burning, a predetermined LED in the LED group 10 is selected and emits light, and the emitted light is condensed by the lens 11 via the light guide member 12, and the film 1 on the sprocket 4 is irradiated, The part is exposed. At this time, if all the latched data are bit information "0", even if the burn command pulse arrives, the burn is not actually performed. In this way, the symbols and the like are printed on the film 1 as a dot image. Then, the latent image formed by exposure is simultaneously developed when the user who purchases the film 1 develops it.

As described above, since the data to be burned is prepared in advance, the time required for reading the data from the memory 7 does not affect the time required for burning.
Therefore, even if the transport speed of the film 1 is high, it can be made to follow it, and the burning position can be managed with high accuracy.

The burning operation is performed on the sprocket 4, and as shown in FIG. 5 (a), when the pawls 4a are formed on both sides and the outer sides of both the pawls 4a are simultaneously burned, FIG. ), When the nails 4a are formed on only one side and both sides are simultaneously baked, as shown in FIG. 5 (c), the nails are formed on only one side.
4a is formed, and when baking is performed only on the side where the claw 4a is formed, the claw 4a is formed only on one side as shown in FIG. 5D, and the claw 4a is formed. It may be burned on the non-existent side.

(3). Compensation for pulsation of film transport: By the way, when the transport speed of the film 1 pulsates, the position to be printed on the sprocket 4 also pulsates, and there is a risk that a part of the symbol or the like printed in the dot image will be duplicated. There is. With respect to this point, in the present embodiment, the output timing of the light emission command pulse in the control circuit 9 is delayed until, for example, when the transport direction of the film 1 is reversed, the output is resumed.

FIG. 6 is a block showing an example thereof. In this example,
Output pulse from the rotary encoder 13 (2-phase pulse)
Is determined by the forward / reverse determination circuit 14, a forward rotation pulse indicating forward rotation (conveyance A direction rotation) is fed to the up terminal U of the up / down counter 15, and a reverse rotation pulse indicative of backward rotation is fed to the down terminal of the counter 15. The output value from the counter 15 is compared with the previous output value of the counter 15 latched by the latch 16 by the comparator circuit 17 and the output value from the counter 15 is larger than the output value of the latch 16. Only in this case, the light emission command pulse is output and the content of the latch 16 is updated to the output value of the counter 15 at that time.

Therefore, the latch 16 always has a large count value (maximum value).
Is latched. Therefore, for example, when the sprocket 4 rotates in the reverse direction, the counter 15 counts down and the count output decreases. Therefore, the light emission command pulse is not output from the comparator 17, and the sprocket 4 returns to the normal rotation. Only when the count value of the counter 15 exceeds the maximum value previously latched by the latch 16, the light emission command pulse is output. That is, the light emission command pulse is the film 1
Will be output only when is correctly advanced in the conveying direction by a predetermined pitch.

FIG. 7 is a diagram showing a block of another example. In this example, the up-down counter 15 is preset with an initial value by the initial value setting unit 18, and when the counter 15 overflows, a light emission command pulse is output, and at the same time, a delay circuit as a preset circuit is output by this pulse. The counter 15 is preset to an initial value via 19.

Therefore, for example, if the counter 15 is selected to overflow at “10” count and the initial value setting device 18 is set to “8”, if the sprocket 4 continues to rotate in the forward direction, the counter 15 becomes 2 A light emission command pulse is output each time the counter is counted up. If you rotate in the opposite direction, the counter
Since 15 counts down, a light emission command pulse is output when the reverse rotation is performed in the forward direction by the amount of reverse rotation and further by the amount corresponding to the count of "2".

Although the carry output of the counter 15 was used here,
Carry output can also be used. In this case, the forward rotation pulse and the reverse rotation pulse of the forward / reverse detection circuit 14 may be input to the terminals U and D of the counter 15 in reverse. In this case, for example, if the counter 15 is set to "1" by the initial value setting device 18,
Just as in the above case, the light emission command pulse is output every time the counter counts down by two.

(4). LED management: At the time of burning, each LED of the LED group 10 has a failure due to an open or short circuit, so it is not possible to confirm whether or not the burning was performed normally. LEDs need to be constantly monitored. Conventionally, the monitoring was based on the current flowing through the LED, but there were various problems.

Therefore, in the present embodiment, as shown in FIG. 8, the voltage between both ends of each LED 10a is detected by the inter-terminal voltage detection circuit.
It is detected individually by 20 and the discriminating circuit 21 discriminates whether or not the voltage is a predetermined value (the forward voltage is 1.8 to 2.0 v when energized). Anomaly detection circuit
22, the abnormality detection circuit 22, in comparison with the lighting control information of the LED, to obtain the extinction information from the determination circuit 21 about the LED that should be energized at present,
Alternatively, when the lighting information of the LED, which should be turned off at present, is obtained, an alarm signal is output. This alarm signal is a signal indicating an abnormality in the selection operation of the LED group 10 by the control circuit 9 in addition to the abnormality in the LED.

〔The invention's effect〕

As described above, according to the present invention, when data is burned, the data to be burned is read from the memory in advance, and the data is burned in synchronization with the timing of burning the data. The data reading time does not have any influence on the burning operation, and it is possible to realize a highly accurate and high-speed burning operation.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing an outline of the whole recording apparatus, FIG. 2 is a torque characteristic diagram of a torque motor, FIG. 3 (a) is a diagram showing data "14" printed on a film, and (b). Is a diagram schematically showing the contents of the data stored in the memory, FIG. 4 is a timing chart of the burning, and FIGS. 5 (a) to 5 (d).
Is an explanatory view showing the burn-in position, FIG. 6 is a circuit diagram for preventing double burn-in, FIG. 7 is another similar circuit diagram for preventing double burn-in, and FIG. 8 is an LED. It is a block diagram of the circuit which detects abnormality. 1 ... Unexposed film for which data should be printed, 2,3 ...
… Guide rollers, 4… sprockets, 4a… nails, 5…
... torque motor, 6 ... data input device, 7 ... memory, 8 ... access address generator, 9 ... control circuit,
10 …… LED group, 11 …… Lens, 12 …… Light guide member, 13 ……
Rotary encoder, 14 ... Forward / reverse detection circuit, 15 ... Up-down counter, 16 ... Latch, 17 ... Comparator, 18 ...
… Initial value setter, 19 …… delay circuit, 20 …… terminal voltage detection circuit, 21 …… discrimination circuit, 22 …… abnormality detection circuit.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masao Nakamura 1 Sakura-cho, Hino-shi, Tokyo Photo Konishi Roku Photo Industrial Co., Ltd. (72) Inventor Ryo Ikeda 1 Sakura-cho, Hino-shi Tokyo Tokyo Photo 6 (56) References JP 59-96964 (JP, A) JP 59-106980 (JP, A) JP 58-223142 (JP, A) Actual development JP 56-38341 (JP, U) Japanese Patent Publication 51-847 (JP, B1) Japanese Patent Publication 2-22365 (JP, B2) Japanese Publication 4-3540 (JP, B2) Japanese Publication 4-81171 (JP, B2) Actual Publication 64-6504 (JP, Y2)

Claims (1)

[Claims] 1. A film data recording apparatus for recording data such as frame number, brand, emulsion number, and bar code on a photographic film, comprising: a film conveying means capable of conveying the photographic film, and the data to the photographic film. Film recording position detecting means for detecting the recording position of the recording medium and outputting a detection signal, storage means for storing the data, and a read signal for reading the data stored in the storage means. Read signal output means capable of outputting to the recording medium, recording means for recording the data on the photographic film, temporarily holding the data read from the storage means by the read signal, and storing the data in the held data. Recording control means for controlling the recording means in synchronism with the detection signal based on the read signal. Read timing of the data to the recording control unit from the said film data recording apparatus characterized by being configured such that before the time from the control of said recording means is performed in synchronization with the detection signal.