JPH0659400A - Latent image forming system to photosensitive material - Google Patents

Abstract

PURPOSE:To obviate the generation of a spacing at the time of coupling bar code patterns by adding clot data for one array component the bar codes at the extreme end on a frame number side. CONSTITUTION:The bar code patterns including the frame numbers, etc., are stored in an output control section 22 for character marks, etc. The dot data for one array is stored at the extreme left end of the patterns having the spacing for one array in the coupling part. The bar code patterns provided with the dot data for one array at the extreme left end are read out and are sent to a data edition section 23 when the coupling of the patterns is commanded from the data edition section 23. The bar code patterns formed in a data input section 20 in such a manner are sent to a memory 35 and are stored. The patterns added with the dots for one array are read out and are coupled to the bar codes indicating grades, etc. Then, there are no more spacings in the full bar codes formed on a film 30 and latent images are formed at the exact bar codes.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a latent image forming system for forming a latent image of data such as a frame number on a photosensitive material such as a film.

[0002]

2. Description of the Related Art Photosensitive material (hereinafter simply referred to as film)
As shown in FIG. 5, bar codes such as frame number bar codes are formed on both ends (outer edges) of the as a latent image at the time of film production. This bar code is used for identifying the product type and the like during hard copy, automatically correcting the exposure conditions, and on the other hand, for reading the frame number and printing the frame number on the back side of the printing paper. In the figure, 1 is a frame number formed by numbers, and 2 is a product type and frame number identification barcode formed by a barcode. P is a perforation (hole) for reliably feeding the film, 3
Is a frame number identification code formed on the opposite outer edge of the film. Reference numeral 4 is a notch for positioning when making a hard copy on photographic paper.

When data such as the conventional frame number type is printed on a film, there are 1000 or more patterns, and the management thereof is difficult. Therefore, the applicant has proposed a method in which these codes are divided into, for example, two, and the divided barcodes are combined and burned at the time of burning (JP-A-3-107141).

FIG. 6 is an explanatory view of the prior art. There are 16 product type codes that represent the manufacturer name and product name, and 80 code numbers that represent the frame number, including parity bits. Therefore, if these barcodes are printed for each type of film, the total pattern is 16 × 80 = 1.
280 pieces are required. Therefore, the applicant divides the product code and the frame number code as shown in FIG. 6 and combines them when printing on a film. In this way, the number of patterns is 16 + 80 = 96.

FIG. 7 is a diagram showing an example of the extended DX code. The extended DX code is composed of two tracks, a clock track and a data track. The clock track is a repeating regular pattern, and the data track changes to write data. There are 31 bits each, and each bit has a meaning when the color is developed (black bar), and has no meaning when the color is not developed.

[0006] 10 is a start code (entry), 11
Is a brand code (maker name), 12 is a blank bit, 1
3 is a product code, 14 is a frame number code, 15 is a blank bit, 16 is a parity bit, and 17 is a stop code (ext). Extended DX code is conventional DX
8 bits are added between the code type and the parity. And 7 bits among them represent a frame number.

FIG. 8 shows how to count these codes. In the case of a frame number code, the half frame code (append A for black) comes first when viewed in the direction from the extract side to the entry side. Next, 1, 2, 4, 8, 16, 3
It is represented by a power of 2, such as 2. In the case of the example in the figure, the frame code is 1 + 8 and the half frame is black, so it is 9A.

[0008]

As described above, when the bar code is divided into a plurality of pieces and stored, and these are combined and printed at the time of latent image formation, the following problems occur. FIG. 9 is a diagram showing a state when the barcodes are combined. In the case as shown in (a), the coupling works well.
However, as shown in (b), when adjacent bits are black bars in the connection portion of the barcode, if they are combined as they are, a white blank area (gap) 18 occurs near the boundary as shown in (c). This may cause an error when reading the barcode.

The above-mentioned problems have been described in the case of electronically connecting the barcodes, but the same applies to the case of mechanically connecting the barcodes. That is, when the pattern on the right side in which the slit is formed is combined with the bar code pattern formed on the left side, if the accuracy of the slit is poor, a similar problem occurs.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a latent image forming system on a light-sensitive material in which a gap is not generated when combining any bar code patterns. There is.

[0011]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention is a system for forming a latent image on a photosensitive material in which various barcodes to be printed on a photosensitive material are divided, and the divided barcodes are combined to be printed. In order to prevent a gap from being generated in the combined portion, one line of dot data is added to the barcode at the end on the frame number side.

[0012]

As shown in (d) of FIG. 9, 1 is added to the leftmost bar code of the bar code pattern representing the frame number and the like.
Add a dummy barcode for each column.
Accordingly, when the left-side pattern and the right-side pattern are combined, it is possible to prevent a gap from being formed in the combined portion.

[0013]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of the present invention. In the figure, 30 is a film as a photosensitive material. The film 30 is regulated by the guide rollers 31 and 32, and is wound around the sprocket 33 and conveyed in the direction of arrow A at a predetermined speed. At this time, the feed hole (perforation) of the film 30 has a sprocket
It is locked to the claw 34.

The shaft of the sprocket 33 is connected to the torque motor 42. This torque motor 42
By applying a rotational force to the sprocket 33 in the direction opposite to the film transport direction, a stable back tension is applied to the sprocket 33. Therefore,
The film 30 is accurately conveyed at the conveying speed by the pulling force on the downstream side in a state where the film 30 is fixed to the surface of the sprocket 33 at the edge portion on the side opposite to the feeding direction by the claw 34 of the feed hole.

Reference numeral 20 is a data input device, which comprises a product type setting unit 21, a character mark output control unit 22, and a data editing unit 23. The product type setting section 21 is shown in FIG.
The type code (for example, sensitivity, brand, size, etc.) shown in is stored, and the designated type code is read from the stored contents and given to the data editing unit 23.

A bar code pattern including a frame number and the like is stored in the output control unit 22 for character marks and the like. For a pattern in which a gap for one column is formed at the connecting portion as shown in FIG. One row of dot data is stored at the far left end. Here, when the data editing unit 23 issues an instruction to combine patterns as shown in (b) of FIG. (E), the bar code pattern in which the dot data for one column is provided at the leftmost end is read to read the data. Send to the editing unit 23.

In this way, the bar code pattern formed by the data input device 20 is sent to and stored in the memory 35. The bar code pattern written in the memory 35 is addressed by a signal from the access address generation unit 36, and the pattern stored in the area designated by this address is read out. The bar code pattern read from the memory 35 is temporarily held in the control circuit 37 by a latch pulse given from the rotary encoder 40 attached to the shaft of the sprocket 33.

The output pattern from the control circuit 37 enters the burn-in portion. In the burned-in portion, a plurality of LEDs 41 whose lighting is on / off controlled by the control circuit 37.
And a light guide member 39 such as a fiber that individually guides the light from each LED to the lens 38, and the ends of the light guide members are arranged in a row at a pitch of, for example, several millimeters. The direction of this arrangement is a direction orthogonal to the transport direction of the film 30.

The film 30 is printed with a dot image synchronized with the transportation when the film 30 is positioned on the sprocket 33. Reference numeral 40 is a rotary encoder, and the access address generator 36 is adapted to generate an address signal in response to a pulse from the encoder 40. Further, the control circuit 37 also receives the output from the encoder 40 and outputs a light emission command pulse (burning timing pulse).

In this way, the bar code pattern from the light guide member 39 is transferred to the sprocket 3 by the lens 38.
3 is printed on the film 30 and a latent image is formed. According to the present invention, in the case of combining codes as shown in FIG. 9B, a pattern in which dots for one column are added as shown in FIG. Combined with barcode. Therefore, the full bar code formed on the film 30 has no gap, and the latent image is formed with an accurate bar code.

FIG. 2 is a block diagram showing another embodiment of the present invention, showing an example in which the present invention is mechanically realized. The film 30 to be transported is fixed as the first divided original film 50 of the product code that displays the start, manufacturer name, product name, etc. so that it can be burnt into the outer edge, and the frame number, parity, and stop are displayed. The original film of the barcode to be used is the second divided original film 51, and a maximum of about 80 types of barcodes are arranged on the outer peripheral portion of the disk 52 at equal pitches. P is a perforation.

In this way, when the disk 52 is rotated at appropriate times so that both split bar codes are aligned on the outer edge of the film 30, a strobe lamp (not shown) is provided.
Is emitted, and each barcode is printed on the film 30. At this time, an image as shown in FIG. 3 is added to the leftmost end of the divided original film 51, if necessary, in order to eliminate the occurrence of a gap at the time of combining. By using such an image in the joint portion, it is possible to prevent a gap from being generated in the joint portion as in the case of the electric type described above.

FIG. 4 is a block diagram showing another embodiment of the present invention, showing another mechanical structure. In this example,
Cylindrical printer drum 152 instead of disk 52
Is used. An image is formed on the frame number bar code formed in the printer drum 152 in order to eliminate the problem at the time of combining as shown in FIG.

Photosensitive material (film) 30 slitted to a width of 35 mm and provided with perforations P on the sides is fed from the left side of the drawing to the puncher 14.
0, the guide roller 112, and the conveying drum 11
1 and further, after passing through the guide roller 113, it is wound up on the right side (not shown).

The transport drum 111 includes an encoder 121.
Is directly connected, the rotation angle of the drum is detected, and the amount of the film 30 conveyed by the drum can be constantly picked up. The encoder 121 may be an optical encoder or a magnetic encoder. Encoder 121
The output of the counter 160 is input to the counter 160, and the counter 160
Outputs a signal for each constant feed amount. The signal then enters the controller 155 of the printer for printing symbols such as numbers and letters of the alphabet and bar codes, which causes the printer drum 152 to select the letters and symbols in synchronism with the film feed amount, and at the same time, the strobe light source. The light emission timing of 151 is synchronized.

Then, the optical system 131 prints the necessary characters and symbols at the required positions on the outer edge of the film on the transport drum 111. The printer drum 15
2, there are various kinds, but here, the necessary characters and symbols are contained in the negative or positive master film f1 stuck on the drum, and by the signal from the counter 160,
The stepping motor 154 operates and the printer drum 1
52 is selectively rotated to the position where the necessary characters and symbols come, and the exposure is made at the position forming the optical axis on the light shielding box 153, and is exposed and baked on the outer edge portion of the film on the transport drum 111 by the optical system 131. .

Also in this embodiment, a bar code pattern as shown in FIG. 3 is formed at the end of the joint portion of the original film f1 to prevent the occurrence of a gap during the joint.

[0028]

As described above in detail, according to the present invention, it is possible to provide a latent image forming system on a light-sensitive material in which a gap is not generated when combining any bar code patterns, and it is practically used. The above effect is great.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an embodiment of the present invention.

FIG. 2 is a configuration diagram showing another embodiment of the present invention.

FIG. 3 is a diagram showing an example of a slit.

FIG. 4 is a configuration diagram showing another embodiment of the present invention.

FIG. 5 is a diagram showing an example of the shape of a film.

FIG. 6 is an explanatory diagram of a prior art.

FIG. 7 is an explanatory diagram of an extended DX code.

FIG. 8 is an explanatory diagram of how to count barcodes.

FIG. 9 is a diagram showing a state when a barcode is combined.

[Explanation of symbols]

 20 data input device 21 product type setting unit 22 character mark output control unit 23 data editing unit 30 film 31, 32 guide roller 33 sprocket 34 claw 35 memory 36 address generating unit 37 control circuit 38 lens 39 optical system 40 rotary encoder 41 LED 42 torque motor

Claims (2)

[Claims] 1. A latent image forming system in which a variety of barcodes to be printed on a photosensitive material are divided, and the divided barcodes are combined to be printed as a dot pattern to prevent a gap from being formed in a combined portion. In order to achieve this, a latent image forming system on a photosensitive material is characterized in that one line of dot data is added to the endmost barcode on the frame number side. 2. A latent image forming system on a photosensitive material in which various barcodes to be printed on both ends of the photosensitive material are divided, and the divided barcodes of the slit original plate are mechanically coupled to each other to form a latent image on the photosensitive material. A latent image forming system on a photosensitive material, which has a correction image added at the very end.