JPH0736109A - Microfilm - Google Patents

Abstract

PURPOSE:To correct an error even when the error is found in the read number of blips and to improve frame retrieving accuracy by putting a confirming mark for confirming the read number of blips on a microfilm. CONSTITUTION:A blank area 16 where a frame 12 is not imprinted is provided every fixed number of frames on the microfilm 10, and a bar code 18 as the confirming mark is imprinted at the lower part or the upper part of the area 16. The bar code 18 provided in the area 16 shows the address of the frame 12 just before the area 16. Then, the bar code 18 put every fixed number of frames is read by a bar code reader, and the read content is inputted in the counter of the blip 14 so as to perform the rewrite of the counter. Namely, the content of the counter is rewritten to the content of the bar code 18. Therefore, even if the error is found in the counted number of the blip 14 because of dust, scratch or contamination on the film 10, the content of the counter is rewritten and corrected the read content every time the bar code 18 is read.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a microfilm having a frame search blip for each frame.

[0002]

2. Description of the Related Art In microfilm, each frame is provided with a blip, and the target frame is searched by counting the blips. For example, the address of the frame with the 100th blip from the beginning is set to 100.

When a plurality of document groups are imprinted, it is sometimes desired to change the address range for each group. For example, the manuscripts in group A have addresses 101 to 2
00 range, and the address of the manuscripts of group B is 401
This is a case where it is desired to set the range to 500. In such a case, a mark for changing the address has been conventionally attached to each group.

For example, there are three types of blips, large, medium, and small, which are classified so that the small blip indicates a page number, the middle blip indicates a file number, and the large blip indicates a batch number. Immediately before a certain group, a mark indicating a number smaller than the first address of the group by one is added, for example, a barcode (random batch code).
In some cases, it is imprinted with and the address is corrected by this mark.

On the other hand, for a frame for which shooting has failed, the same frame may be shot again after this failed frame. In this case, the blips will overlap.
Therefore, there is also a technique in which a mark for correcting this duplication is imprinted with, for example, a bar code (error repair code).

[0006]

However, in an actual microfilm, the film may have scratches, dust, dirt or the like, and a reading error may occur when reading the blip with the microfilm reader.

When such a read error occurs, the addresses thereafter are left mad and correct search cannot be performed. This misalignment, even if it can be corrected if there is a random batch code to change it to another group of addresses, cannot be corrected by general microfilm without such code. Therefore, there is a problem that correct search becomes difficult.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and provides a microfilm capable of correcting an address even if there is a reading error of a blip and improving a frame search accuracy. The purpose is to provide.

[0009]

According to the present invention, this object is characterized in that a microfilm having a frame-searching blip for each frame is provided with a confirmation mark for confirming the number of readings of the blip. It is achieved by the micro film. Here, the confirmation mark may be provided on the traveling locus of the blip, but may be provided on the opposite side of the blip across the traveling locus of the top.

[0010]

1 is a plan view showing an embodiment of the present invention, FIG.
FIG. 8 is a plan view showing another embodiment of the same. In these figures, a large number of frames 12 are printed on the microfilm 10 at equal intervals. Reference numeral 14 denotes a blip attached below the tops 12, one for each top 12.

The film 10 is provided with a blank area 16 in which the frames 12 are not printed for every predetermined number of frames, and a bar code 18 as a confirmation mark is printed below or above the blank area 16. There is. This blank area 1
6 is provided for each fixed number of frames, for example.

For example, the 50th frame 12 (address is 5
This blank area 16 is provided for each 0). Blank area 1
The bar code 18 provided in 6 indicates the address (50 in this case) of the frame 12 immediately before the blank area 16. Further, the next blank area 16 is provided next to the frame 12 which is 50 more ahead, in this case, the 100th frame 12.
It is located next to (address 100). This blank area 16
The bar code 18 provided in FIG. 2 indicates the 100th address.

The microfilm reader (not shown) is provided with a bar code reader (not shown) for detecting the blip 14 and the bar code 18. As this microfilm reader, known ones described in Japanese Patent Laid-Open No. 4-3254 can be used, and therefore the description of the microfilm reader is omitted. When the microfilm 10 is read, the blips 14 are detected while the film 10 is being conveyed, the number of them is counted, and this count value is used as the address of the frame 12.

The address of the frame 12 to be searched is input in advance from a keyboard (not shown) or the like, and when the count value of the blip 14 matches this pre-input address, the transport of the film 10 is stopped and the frame 12 is read out. Is.

A bar code 1 attached every fixed number of frames
8 is read by a bar code reader, and the content is input to the counter of the blip 14 to rewrite the counter. That is, the contents of the counter are rewritten to the contents of the barcode 18. Therefore, even if the film 10 has dust, scratches, stains, or the like and the count number of the blip 14 is incorrect, the content is rewritten and corrected each time the barcode 18 is read.

The bar code 18 may be provided for every certain number of frames, but it goes without saying that the bar code 18 may be inserted at an appropriate position such as between groups of documents. The barcode 18 is
If it is provided on the traveling locus of the blip 14 as shown in FIG. 1, the reader of the blip 14 can be used to read the barcode 18. However, as shown in FIG. 2, the bar code 18 may be provided on the opposite side of the blip 14 across the traveling locus of the top 12. In this case, not only can the blip 14 and the barcode 18 be read without confusion, but it is also possible to search using a conventional device that is designed to read only the blip 14, which is convenient. .

[0017]

As described above, according to the first aspect of the present invention, since the confirmation mark for confirming the number of readings of the blip is attached to the microfilm, it may be damaged, dust or dirt on the film. Even if the number of blips read is incorrect, it can be corrected by the number indicated by the confirmation mark. Therefore, it is possible to improve the frame search accuracy.

The confirmation mark may be a bar code. Further, it may be provided on the traveling locus of the blip. However, it may be provided on the opposite side, that is, on the opposite side of the blip across the traveling locus of the frame (Claim 2). At this time, the microfilm according to the present invention may be applied to a conventional microfilm reader for searching. Becomes possible,
It is convenient.

[Brief description of drawings]

FIG. 1 is a plan view of an embodiment of the present invention.

FIG. 2 is a plan view of another embodiment.

[Explanation of symbols]

 10 Micro film 12 Frame 14 Blip 18 Bar code as confirmation mark

Claims (2)

[Claims] 1. A microfilm in which a blip for frame search is provided for each frame, and a confirmation mark for confirming the read number of the blip is provided. 2. The microfilm according to claim 1, wherein the confirmation mark is provided on the opposite side of the blip across the running locus of the frame.