JPH04134448A - Photographic film cartridge and film cutter - Google Patents

Abstract

PURPOSE:To prevent recording information from being divided into parts at the time of cutting a film by forming a mark for identifying a magnetic recording area and a non-recording area. CONSTITUTION:A photographing-finished cartridge 10 is set in a cartridge holder 32. After this, a film leader searching pat 31 is actuated so as to search the film leader. A starting mark 23 on a pulled-out film 11 is detected by a mark sensor 42. Then, after the film 11 is fed by a prescribed quantity, a leading end cutter 44 is actuated by a controller 50, and then, the leading end of the film is cut at a leading end cutting position 51. The leading end part 11a of the film which is cut by the cutter is ejected to a dust tray 47 through a discharging guide 48. After this, the guide 48 is made horizontal state, and the cutting-finished leading end part 11a of the film is transferred to the splicing position of a splicing part 46. At the splicing position, the end part of a film leader 56 is set, and the end part and the leading end of the film are spliced by a splicing tape 57.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a photographic film cartridge and a film cutting device, and particularly to a photographic film cartridge in which film recording information is recorded in a magnetic recording layer in addition to photographing images, and a photographic film cartridge using the same. This invention relates to a cutting device.

[Conventional technology] In addition to photographing images on film, various types of recorded information such as film information and shooting information are recorded in a magnetic recording layer, which is wound and stored in a cartridge, and is printed by referring to this recorded information. A completely new type of photographic film cartridge has been proposed.

[Problems to be Solved by the Invention] When printing such photographic film cartridges, large-scale photofinishing laboratories, as in the past, splice a large number of orders of film into a long length and roll it. Roll it up into a shape and process it. Then, this developed film is subjected to negative verification using a negative verification machine, and then printed and exposed using a printer.

At the time of negative inspection or printing, the amount of exposure correction is determined and the number of prints, size, etc. are specified based on film recording information recorded in the magnetic recording layer of the film. For this reason, the negative verification machine and printer are provided with a magnetic recording/reproducing device for reading film recording information and writing new print instruction information and the like.

In addition, even in small-scale photo labs, the leading edge of the film is taken out from the cartridge, a film leader is attached to it, and various processes such as development and printing are performed in the same manner as in the past. Then, during printing, the film recording information is read, and based on this, the exposure correction amount is determined and the number of copies to be printed is specified, just as in a large-scale photofinishing laboratory.

In this way, we can join films of many orders,
When joining the leading end of the film to a leader, the leading end and rear end of the film are cut to facilitate joining.

For this reason, when simply cutting the leading and trailing ends of the film, as with conventional films, there is a risk that the recorded information recorded on the magnetic recording layer will be fragmented due to this cutting.
In this case, there is a problem that the recorded information cannot be used at the time of fuga verification or printing.

The present invention is intended to solve the above-mentioned problems, and provides a photographic film cartridge and a film cutting device that prevent the recorded information recorded on the magnetic recording layer from being separated when cutting the leading edge or trailing edge of the film. The purpose is to

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a photographic film cartridge in which a photographic film having a magnetic recording layer is wound and stored, and a mark for identifying a magnetic recording area and a non-recording area. was formed. Another invention provides a means for detecting an identification mark formed on a photographic film to identify a magnetic recording area and a non-recording area;
A means for cutting the film in a non-recording area outside the magnetic recording area based on an identification mark detection signal from this means is provided.

[Effect]

When cutting the leading or trailing edge of the film, a mark identifying the magnetic recording area and the non-recording area is detected, and based on this detection signal, the film is cut in the non-recording area outside the magnetic recording area. Therefore, since the magnetic recording area is not divided, the film recording information recorded therein can be used in its complete form.

[Embodiments] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

As shown in Part 1, photographed negative film 1 before development
1 is wound onto a spool 12 in a photographic film cartridge 10 and stored in a cartridge main body 13.

As shown in FIG. 2, the photographic film cartridge 10 is
By rotating the spool 12 in the feeding direction opposite to the film winding direction, the leading end 11a of the film emerges from the film opening 14 of the cartridge main body 13 to locate the beginning of the film. The film storage chamber 15 of the cartridge main body 13 is formed to be approximately the same or slightly larger than the maximum winding diameter of the film when the entire film 11 is wound onto the spool 12. Thereby, by rotating the spool 12 in the feeding direction, the rotation of the spool 12 is transmitted to the film leading end 11a, and the film leading end 11a exits from the film entrance/exit port 14.

Further, as shown in FIG. 1, the film leading end 11a is
It has a shape in which both edges are cut diagonally, reducing film feeding resistance when the film is brought to the beginning. A perforation llb for feeding the film to the tip a is formed in the leading end 11a. In addition, in the image recording section 11c, a positioning perforation lid is formed for each frame 11e, and by mechanically or optically detecting this perforation lid, the film can be placed in the exposure frame of a camera or printer. Each frame
ie is set. In addition, a transparent magnetic recording layer is formed over the entire surface of the film 11 on the surface opposite to the photosensitive emulsion surface of the film 11, and this layer contains film information, photographing information, print instruction information, etc. at the time of film manufacturing. , magnetically recorded at the time of photographing, DP reception, etc.

Further, at the leading end 11a and rear end 11f of the film 11, there are magnetic recording areas (indicated by hunting in the figure) 20 and non-recording areas 21, 22 of a magnetic recording layer formed over the entire surface of the film 11. A start mark 23 and an end mark 24 are formed for identification. These marks 23 and 24 are made of a light-shielding ink layer,
It is formed in a layered manner on the photosensitive emulsion layer. Each mark 23, 24 is detected from the difference in light transmittance or light reflectance between the ink layer forming surface and other surfaces. In this example,
The start mark 23 and the end mark 24 are composed of two rectangular marks arranged at a predetermined interval in the film feeding direction.
This is to prevent erroneous detection of d.

Next, a film splicer for splicing a large number of photographic film cartridges 10 and supplying the film to a film processor as a roll film will be described. As shown in FIG. 2, the film cue section 31 is provided with a cartridge holder 32 and a spool rotation shaft 33.

The cartridge holder 32 is provided with a storage groove for holding the cartridge 1o, and the cartridge holder 32 is provided with a storage groove for holding the cartridge 1o.
3, the cartridge main body 13 is held so as not to rotate when rotating in the film feeding direction. The spool rotation shaft 33 is connected to a motor 35 via a torque limiter 34. Further, the spool rotating shaft 33 is moved by a shift portion 36 between a locking position where the tip end enters the locking end portion 12a of the spool 12 and a position where it is retracted from this position.

As shown in FIG. 3, a film transport path 40 is formed on the film leading end exit side of the film indexing section 31. As shown in FIG. In the film transport path 40, a rear end cutter 41. is provided in the film transport direction. Mark sensor 42, film pull-out roller pair 43. Tip cutter 44, film feed roller pair 45. and a splice portion 46 are arranged. Splice part 4
In order to discard the cut film leading end 10a, there is a disposal guide 48 on the front side of the film 6, which places the cut film tip 10a in a waste receptacle 47.
is located. The discard guide 48 is displaced between a position in which it guides the cut film leading end 10a to the waste receptacle 47 and a position in which it guides the cut film end to the splice portion 46.

The mark sensor 42 is composed of a light emitting/receiving type optical sensor consisting of a light emitter 42a and a light receiver 42b, and detects the start mark 23 and end mark 24 from changes in the amount of light by detecting the transmitted light of the film. , sends this detection signal to the controller 50. Note that in order to detect each mark 23, 24 before development, the mark sensor 42 uses infrared light of a wavelength outside the sensitivity range of the photosensitive emulsion layer so as not to cause light breakage.

The controller 50 operates the film leading edge cutter 44 or the film trailing edge cutter 41 and each feed roller pair 43.45 according to the mark detection signal, and operates each mark 23.24.
Non-recording area 21 outside the magnetic recording area 20 based on
．． Cut at 22. That is, the controller 50 starts the film pull-out roller pair 4 after detecting the start mark 23.
After the film 11 is fed by a certain amount in step 3, the leading end of the film is cut along a leading end cutting line 51, as shown in FIG.

Furthermore, after the end mark 24 is detected, each roller pair 43.4
After the film 11 is fed a certain amount by step 5, the trailing end of the film is cut along the trailing end cutting line 52.

The controller 50 also controls each force, roller pair 41.44, and roller pair 43.45, as well as the film cue unit 31.
and controls the splice section 46.

When the start mark 23 is detected by the mark sensor 42, the timing at which the leading edge of the film passes the pair of film pull-out rollers 43 is determined from this detection signal and the film feed speed.
from then on, the film 11 is pulled out from the cartridge 10 by the pair of film pull-out rollers 43.

The film feed roller pair 45 feeds the leading end of the cut film by a predetermined amount and sets it at the joining position of the splice portion 46 . At the joining position of the splice portion 46, a film leader 5 whose tip is fixed in advance to a film take-up reel 55 is provided.
The rear end of the leader 56 is set at the splice portion 46, and the leading end of the cut film is joined to the rear end of the leader 56 by a splice stay 157. As is well known, in the splice section 46, the splice tape 57 is brought into close contact with the abutting part between the ends of each film or the abutting part between the film end and one end of the film leader by a pressing head 46a, thereby joining these parts.

Next, the operation of this embodiment will be explained. First, the photographed cartridge 10 is placed in the cartridge holder 32.

After this setting, the film beginning section 31 is operated to perform film beginning to bring the leading edge of the film out from the cartridge main body 13.

The start mark 23 of the pulled-out film 10 is detected by the mark sensor 42 . After detecting this start mark, the controller 50 advances the film 11 by a predetermined amount so that the leading edge cutting line 51 is positioned at the position where the leading edge cutter 44 is arranged, and then operates the leading edge cutter 44 to move the leading edge of the film to the leading edge cutting position 51. Cut with. The cut film leading end 10a is discharged into a waste receptacle 47 via a waste guide 48. After this ejection, the waste guide 48 becomes horizontal, and the cut film end 10a is transferred to the splice part 46.
Send it to the joining position.

An end of a film leader 56 of a film take-up reel 55 is placed at the joining position, and one end of this leader and the leading end of the film are joined by a splice tape 57. After bonding, the film 10 is wound onto a film take-up reel 55.

Eventually, when one order of film lO is pulled out from the cartridge main body 13, the end mark 24 is detected by the mark sensor 42. After the end mark is detected, the film 10 is fed a certain amount, and then the film 10 is cut along the trailing edge cutting line 52.

The cut rear end of the film is set at the joining position of the splice portion 46. Further, the cartridge 11 from which the film has already been pulled out is taken out from the cartridge holder 32, and a new cartridge 10 is loaded therein. Thereafter, by repeating the same process, the films of a large number of orders are wound onto the film take-up reel 55.

In the above embodiments, the start mark 23 and the end mark 24 are formed on the photosensitive emulsion side, but they may also be formed on the magnetic recording layer side or on both sides. Further, although the marks 23 and 24 are formed on one side edge of the film, they may be formed on both side edges. Furthermore, the fourth
As shown in the figure, a start mark 71 and an end mark 72 may be formed at the center of the film 70 in the width direction.

In addition to the ink layer, the marks 23, 24, 71, and 72 may be formed by small holes, or by removing a portion of the photosensitive emulsion surface or magnetic recording layer surface to leave only the film base. Good too.

Further, as shown in FIG. 5, notches 75 may be used as start and end marks 73, 74. In FIGS. 4 and 5, the same components as those in the first embodiment are designated by the same reference numerals, and their explanations will be omitted.

Further, the start mark and the end mark may use the first perforation and the last perforation of the frame positioning perforations lld. In this case, the distance between the perforation sensor and the tip cutter is set to be greater than the distance between the tip cutting line 51 and the leading perforation. In addition, to identify the trailing perforation, first read the number of photographed frames information recorded as magnetic recording information, count the number of positioning perforations 10d, and when this count value matches the frame number information, it is determined that it is the trailing perforation. do. After the film has been fed a certain amount from the trailing perforation, the trailing edge of the film is cut along the trailing edge cutting line 52.

Further, in the above embodiment, the present invention is applied to a photographic film cartridge having a film cueing function, but the present invention may also be applied to a photographic film cartridge not having a film cueing function.

Further, in the above embodiment, the present invention is applied to a film splicer, but in addition to this, one or two films may be used.
The present invention can also be implemented in a mini-lab type film processor that connects each book to a film reader and processes it one-on-one.

〔Effect of the invention〕

4. As explained above, according to the present invention, a start mark and an end mark are recorded on the film in advance, and the leading and trailing ends of the film are cut based on these marks. Non-recorded areas can be identified by these marks, and the leading and trailing ends of the film can be cut at the boundaries of these areas. Therefore, since the film is not accidentally cut within the magnetic recording area, film processing such as splicing of the film can be performed with the film recording information completely recorded.

This makes it possible to reliably perform negative inspection, printing, etc. using film recording information.

[Brief explanation of the drawing]

FIG. 1 is a front view showing a photographic film cartridge of the present invention. FIG. 2 is a perspective view showing a film cue section. FIG. 3 is a schematic diagram showing a film splicer. 4 and 5 are front views showing other photographic film cartridges. 10 ・ 11 ・ 20 ・ 21° 23 ・ 24 ・ 31 ・ 42 ・ 46 ・ 55 ・ Photographic film cartridge magnetic recording area...No recording area Start mark End mark Film start section...Cutter mark Sensor splice section winding Take reel. April 26, 1991

Claims (2)

[Claims] (1) A photographic film cartridge in which a photographic film having a magnetic recording layer is wound and housed, characterized in that a mark is formed to identify a magnetic recording area and a non-recording area. (2) means for detecting an identification mark formed on a photographic film to distinguish between a magnetic recording area and a non-recording area; and a means for detecting an identification mark formed on a photographic film to distinguish between a magnetic recording area and a non-recording area; A film cutting device characterized in that it is equipped with means for cutting with.