JPS63106635A - Data burning-in device for film - Google Patents

Abstract

PURPOSE:To raise the accuracy of a data burning-in position, and to prevent the quality from being deteriorated, even in case of expressing a character, etc. by a dot image, by setting its burning-in position onto a sprocket. CONSTITUTION:According to this system, a data to be burned in is prepared in advance, therefore, the time required for reading out a data from a memory 7 exerts no influence on the time required for burning-in, and accordingly, even if a carrying speed of a film 1 is set to high speed, it is possible to follow it up, and the burning-in position is managed with high accuracy. In such a state, the burning-in operation is executed on a sprocket 4. In such a way, no slide of a film 1 is generated, a position of the film 1 can be detected exactly, and a data is burned into a prescribed position with high accuracy.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention provides a method for adding frame numbers, brands, emulsion numbers, bar codes, and other characters and symbols (hereinafter referred to as The present invention relates to an apparatus for optically printing data (referred to as "data"), and particularly relates to an insertion apparatus that has been improved in terms of the data insertion position.

[Background of the invention]

This type of device slits an unexposed film coated with a photosensitive material into a predetermined width, forms a perforation for feeding, and then prints data while transporting the film at a predetermined speed. It is.

However, when printing data with this device, conventionally, the film was conveyed by rollers and the data was printed on the rollers, so if slippage occurred between the rollers and the film, the film could be damaged. There is a problem in that accurate position detection is no longer possible, and as a result, the loading position deviates from the normal position.

For this reason, especially when printing characters using dot images, there is a problem in that gaps are created in the characters and the quality of the characters is deteriorated.

[Purpose of the invention]

An object of the present invention is to print data at a predetermined position with high precision during printing.

[Structure of the invention]

For this purpose, the present invention provides an apparatus for optically imprinting data onto an unexposed film being transported, which is equipped with a sprocket for transporting the film, and the data loading position is set on the sprocket.

〔Example〕

Examples of the present invention will be described below. First, FIG. 1 is a diagram showing an outline of the entire system. The unexposed film 1 is conveyed at a predetermined speed in the direction of arrow A while being regulated by a guide roller 2.3 and wound around a sprocket 4.

At this time, the feed hole of the film 1 is aligned with the pawl 4 of the sprocket 4.
It is locked at a. Further, this sprocket 4 has its shaft coupled to a torque motor 5. Since this torque motor 5 has torque characteristics as shown in FIG. Stable bank tension is applied even when stopped. Therefore, the film 1 has a sprocket 4 on the edge opposite to the feeding direction in its feeding hole.
Since the claw 4a is locked, the paper is transported accurately at the transport speed due to the tensile force pulled on the downstream side.

6 is a data input device, a setting device 61 for type (sensitivity, brand, size, etc.), and a data output device 6 for characters, symbols, etc.
2 and a data editor 63, this data editor 63
The edited data is written to a memory 7 made of RAM or the like. The data written here is addressed and read out using a signal from the access address generator 8, and after being once bordered by the control circuit 9, the data is read out at the loading portion when the loading timing pulse arrives. Burned into 1.

This insertion part includes an LED group 10 consisting of a plurality of LEDs whose lighting is individually controlled on and off by a control circuit 9;
A light guide member 12 such as a fiber guides the light from each LED to a lens 11 individually, and the ends of the light guide members 12 are arranged in a line at a pitch of, for example, several millimeters. The direction of this arrangement is perpendicular to the transport direction of the film 1. The printing on the film 1 is carried out in dot images when the film 1 is positioned on the sprocket 4 in synchronization with the conveyance.

A rotary encoder 13 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 pulses from the encoder 13. The control circuit 9 also receives the output from the encoder 13 and outputs a light emission command pulse (loading timing pulse).

Next, the operation will be explained.

(1) Regarding writing data to the memory 7 2. Writing data to the memory 7 is as shown in FIG.
It varies depending on the photo taken. ), write data for all parts in the length direction (insertion data line) of the position to be printed. That is, the positions where symbols etc. are actually written are at predetermined pitches or several places, but in this embodiment, dot information is written in the address portion of the memory corresponding to the position where the symbols etc. are to be written. 1 ' Interpret I J, and put dot information "OJ" in other address parts.
As a result, the data of the entire portion of the data-loaded portion of the film from the beginning to the end in the longitudinal direction is written into the memory 7 in order from the smallest address by using ``IJ'' or ``0''.

This writing is performed by the data input device 6, but if the data input device 6 is configured to be separable, if a plurality of loading devices are installed, the data input device 6
It is possible to use one loading device in common with other loading devices.

In addition, in the case of repeated occurrences, it is only necessary to count the travel detection pulses from the rotary encoder 13 and access the addresses of the memory 7 sequentially from the youngest address for each predetermined pitch travel amount, so that the addressing of the memory 7 can be performed by the CPU or software. No intervention is required, and the access address generator 8 can be configured with simple hardware, making it possible to increase the speed of successive output.

(2) About burning: In this embodiment, when burning data, the data to be burned later is read out from the memory 7 in advance and latched into the control circuit 9, and the data is loaded. The image is burned in when the command pulse arrives. Fourth
The figure is a timing chart, and the data preparation pulse is a pulse for latching data read from the memory 7 into the control circuit 9.

During this loading, the LED of 0 in the first group of LEDs is selected and emits light, and the emitted light passes through the light guiding member 12 and is focused by the lens 11, and irradiates the film 1 on the sprocket 4. , expose that part. At this time, if all the latched data is bit information 'OJ',
Even if the loading command pulse arrives, burning will not actually be performed. In this way, symbols and the like are imprinted on the film 1 in the form of dot images. The latent image formed by exposure is developed at the same time when the user who purchased the film 1 develops it.

As mentioned above, since the data to be burned is prepared in advance, the time required to read 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 increased, it can be made to follow the high transport speed, and the loading position can be managed with high precision.

The burn-in operation is performed on the sprocket 4, as shown in Fig. 5 (
As shown in FIG. 5(b), when the claws 4a are formed on both sides and the outside of both claws 4a are burned at the same time, as shown in FIG. 5(b).
If the claw 4a is formed only on one side as shown in FIG. In the case where only the nail 4a is formed on one side, as shown in FIG.

In addition, multiple sprockets are used in the film transport system, and the film is stretched between adjacent sprockets.

If this is done, the positional accuracy will be high even if loading is performed in that area.

(3) Compensation for film conveyance pulsation: By the way, if the conveyance speed of the film 1 pulsates, the position on the sprocket 4 that should be imprinted will also pulsate, resulting in double copying of a part of the symbol etc. imprinted as a dot image. There is a risk that Regarding this point, in this embodiment, the output timing of the light emission command pulse in the control circuit 9 is delayed until the direction of transport of the film 1 is reversed, for example, until it returns to the original direction.

FIG. 6 is a block diagram showing an example of this. In this example,
The output pulse (two-phase pulse) from the rotary encoder 13 is discriminated by the forward/reverse discrimination circuit 14, and the forward rotation pulse indicating forward rotation (rotation in six conveyance directions) is detected by the up/down counter 1.
The output of the counter 15 is latched by the output of the counter 15 and the output of the counter 15.
The comparison circuit 17 compares the previous output value of the counter 15 with the previous output value of the latch 16, and only when the output value from the counter 15 is larger than the output value of the latch 16, a light emission command pulse is output and the latch 1
6 is updated to the output value of the counter 15 at that time.

Therefore, a large count value (maximum value) is always latched in the latch 16. Therefore, for example, when the sprocket 4 rotates in the opposite direction, the counter 15 counts down and its count output decreases, so the comparator 17 does not output a light emission command pulse and the sprocket 4 returns to rotating in the forward direction. The light emission command pulse is output only when the count value of the counter 15 exceeds the maximum value previously latched by the latch 16. In other words, the light emission command pulse is
It is output only when the film 1 accurately advances a predetermined pitch in the transport direction.

FIG. 7 is a block diagram of another example. In this example, an initial value is preset in the up/down counter 15 by the initial value setter 18, and when the counter 15 overflows, a light emission command pulse is output, and at the same time, this pulse is used as a delay circuit as a preset circuit. 1
9, the counter 15 is preset to an initial value.

Therefore, for example, the counter 15 is selected to overflow at a count of "10", and the initial value setter 18 is set to '10'.
If 8J is set, and the sprocket 4 continues to rotate in the forward direction, a light emission command pulse will be output every time the counter 15 counts up twice. If you rotate in the opposite direction,
Since the counter 15 counts down, the light emission command pulse is output when the counter 15 then returns to the normal direction by the amount of the reverse rotation and further rotates by an amount corresponding to the '2J count.

Although the carry output of the counter 15 is used here, the carry down output may also be used. In this case, the forward rotation pulse and reverse rotation pulse of the forward/reverse detection circuit 14 are detected by the counter 15.
You can input it to terminals U and D in reverse. In this case, for example, if 'IJ' is set in the counter 15 by the initial value setter 18, a light emission command pulse will be output every time the count is down by 2, just as in the above case.

(4) Regarding LED management: During loading, even if each LED in LED group 10 is broken due to an open or short circuit, it is not possible to confirm whether loading was performed normally or not. , that L
It is necessary to constantly monitor ED. Traditionally, the monitoring
This was due to the current flowing through the LED, but there were various problems.

Accordingly, in this embodiment, as shown in FIG.
When energized, the forward voltage is 1.8 to 2. Ov
) is determined by the determination circuit 21, and the determination signal is inputted to the abnormality detection circuit 22.
2, the discrimination circuit 21 compares the lighting control information of the LEDs and determines which LEDs should be currently energized.
An alarm signal is output when light-off information is obtained from the LED, or when information on the lighting of an LED that should currently be turned off is obtained. This alarm signal is
In addition to the abnormality, the signal also indicates an abnormality in the selection operation of the LED group 10 by the control circuit 9.

〔Effect of the invention〕

As explained above, in the present invention, the data loading position is on the sprocket, so the accuracy of the loading position is high.
Even when characters, etc. are expressed as dot images, deterioration in quality can be prevented.

[Brief explanation of the drawing]

Figure 1 is an explanatory diagram showing the overall outline of the loading device, Figure 2 is a torque characteristic diagram of the torque motor, and Figure 3 (a) is a diagram showing the data "14j" printed on the film. A diagram schematically showing the contents of data stored in the memory, FIG. 4 is a timing chart of burning, and FIG. 5 t8) to (d)
is an explanatory diagram showing the burn-in position, Figure 6 is a circuit diagram for preventing double loading, Figure 7 is a circuit diagram of another example to prevent similar double loading, Figure 8 is an LED FIG. 2 is a block diagram of a circuit that detects an abnormality. 1... Unexposed film on which data should be printed, 2.3
...Guide roller, 4...Sprocket, 4a...
- Claw, 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, 1
8...Initial value setter, 19...Delay circuit, 20...
・Terminal voltage detection circuit, 21...discrimination circuit, 22...
- Abnormality detection circuit. Agent Patent Attorney Tsune Nagao Number of revolutions → → Address Figure 5 Figure 8

Claims (1)

[Claims] (1) A data reading device for optically imprinting data onto an unexposed film being transported, comprising a sprocket for transporting the film, and a data reading position on the sprocket.