JPH02293836A - Film carrier - Google Patents

Abstract

PURPOSE:To load a film speedily and automatically by means of a simple operation by providing the film carrier with a film rewind control means which controls in such a way that a film is not rewound until a film carry control means once instructs to stop carrying the film or to take it up at the end of automatic loading. CONSTITUTION:The film carrier is provided with a supply shaft 2 to which an almost roll-like microfilm F is mounted, a take-up shaft 3 which takes up the film F from the supply shaft 2, a controller 4 as a film carry control means which controls the carry of the film F, and a control circuit 5 as the film rewind control means which controls film rewind. The film is not rewound until the film carry control means 4 once instructs to stop carrying the film or to take it up at the end of automatic loading of the film; therefore, rewind of the film onto the supply shaft 2, which is caused by malfunction, does not occure at the end of automatic loading. Thus, the film can be speedily and automatically loaded by means of the simple operation.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a film transport device equipped with an automatic loading mechanism that automatically winds the leading end of a roll film attached to a supply shaft onto a take-up shaft. (Prior Art) Conventionally, this type of film transport device has been employed in, for example, a search device built into a microfilm league, a reader printer, and the like. This device includes a supply shaft that attaches a roll of film wound around a supply reel, and a take-up shaft that attaches a take-up reel that winds the film from the supply reel, and rotates the supply shaft and take-up shaft. The motor is connected to the control circuit. In addition, a controller is connected to the control circuit, and is equipped with a control knob for determining the film transport direction and transport speed, and an automatic loading start switch for automatically loading the film. control the transport of the film. In this device, the operator attaches the film wound on the supply reel to the supply shaft and then presses the automatic loading start switch, so that the leading edge of the film on the supply reel is placed between the supply shaft and the take-up shaft. The film is then sent out to a conveyance path, where it is wound around a take-up reel, and the film is automatically loaded. By performing this automatic loading, the film is kept in a state where it can be searched and operated with less effort and time. After this, by operating the control knob and instructing the film to wind, rewind, and stop,
The film is conveyed in any direction in the winding direction or unwinding direction, a desired image frame is stopped at a predetermined position on the conveyance path, and this image frame is illuminated by an illumination means, and the projected image is displayed on a screen. ．． Figure 4 is a flowchart showing the operation of this device after the search operation is completed. In the figure, after the search operation is completed (step ■), by rotating the control knob in the rewinding direction (step ■), the film is rewound onto the supply reel (step ■) and the film to be inspected next is Prepare (Step ■). Then, when all the film is rewound onto the supply reel, the rotation of the supply shaft is automatically stopped, but at this point, move the control knob to the stop position (step ■), and then start the search. Replace the film to be rewound with the rewound film and attach it to the supply shaft (
Step ■). Thereafter, automatic loading is performed by pressing the automatic loading start switch (step ■), and an image search on the film is performed by operating the control knob (step ■). (Problem to be Solved by the Invention) By the way, when automatic film loading is performed with the control knob at the rewind position in step It will be rewound onto the supply reel and will need to be automatically loaded again. To prevent this, conventionally the automatic loading start switch was prevented from operating when the control knob was in a position other than the stop position. but. When performing automatic loading after rewinding the film as described above. Because it is always necessary to operate the control knob. The operation for automatic loading becomes complicated, and also. The drawback was that it was time consuming. In particular, when the operator needs to operate with one hand, the operator must use both one hand to change the film on the supply shaft and operate the control knob, making the operation complicated. Automatic loading tended to take a long time. The present invention has been made to solve the problems of the prior art described above, and its purpose is to achieve simple operation,
The object of the present invention is to provide a film transport device that can quickly and automatically load film. (Means for Solving the Problems) In order to achieve the above object, the present invention includes a supply shaft to which a roll film is attached and a take-up shaft for winding the film from the supply shaft. After the leading edge of the film mounted on the film is automatically wound around the take-up shaft and the film is automatically loaded, the film is transported between the supply shaft and the take-up shaft in accordance with instructions from the film transport control means. In the conveying device, after the automatic loading is completed, film rewinding control is performed to control the rewinding of the film so that the film is not rewound until an instruction is given from the film conveyance control means to stop conveying the film or to rewind the film. It is characterized by having a means. (Function) In the present invention having the above configuration. After the automatic loading of the film is completed, the film is not rewound until the film transport control means once instructs the film to stop transporting or wind the film. Therefore, the film may be rewound onto the supply shaft due to a malfunction after the automatic loading is completed. No. Therefore, since there is no need to perform an operation to prevent rewinding due to a malfunction after automatic film loading, the automatic loading operation becomes simple and automatic loading can be performed quickly. Further, after automatic loading, the film can be rewound once the film transport control means has given an instruction to stop or wind the film, so there is no problem with the transport of the film. (Example) The present invention will be explained below according to the illustrated example. 1st
The figure is an explanatory diagram showing the configuration of a film conveying device according to an embodiment of the present invention. In the figure, l indicates a film transport device installed in the retrieval device, which includes a supply shaft 2 to which a roll-shaped microfilm F is mounted, a winding shaft 3 to wind the film F from this supply shaft 2, and a film transport device provided in the retrieval device. It is composed of a controller 4 as a film transport control means for controlling the transport of the film F, and a control circuit 5 as a film rewind control means for controlling the rewinding of the film. The control circuit 5 includes a motor Ml that rotates the supply shaft 2, a motor M2 that rotates the take-up shaft 3, a sensor 6 that detects the presence or absence of the film F near the take-up shaft 3, and a controller 4.
is connected. The controller 4 is provided with an automatic loading start switch 7 for automatically loading the film F, a control knob 8 for determining the transport direction and transport speed of the film F, and a counter 9 for displaying the winding amount of the film F. There is.

When searching for an image recorded on the film F using this device 1, the operator first stores the supply reel 2a on which the film F is wound into the cartridge 2b, and then inserts the cartridge 2b onto the supply shaft 2b. Attach it to. The take-up shaft 3 has a take-up reel 3a. Here, when the operator presses the automatic loading start switch 7, the capsun roller 10 rotates in the direction of the arrow in the figure and moves to the position indicated by the broken line, contacts the film F, and the film F is sent out to the conveyance path 11. ．． A guide roller 12 provided on the conveyance path 1l.
13, the film F moves through the conveyance path 11, and when the leading edge of the film F approaches the winding shaft 3, the film F is detected by the sensor 6, and the winding shaft 3 rotates in the direction of the arrow in the figure. When the leading edge of the film F is wound around the take-up roll 3a, the geared bustan roller 10 stops rotating and moves away from the film F, and the take-up shaft 3 stops rotating. The film F, which has been automatically loaded in this way and is held by the supply reel 2a and the take-up reel 3a, can be taken up or wound from the controller 4 by the operator operating the control knob 8. When instructions are given to return and stop transport, the film F is transported in the winding direction (in the direction of the solid line arrow in the figure) or in the rewinding direction (in the direction of the dashed line arrow in the figure) until the desired image frame reaches the stop position in the transport path ll. It will be stopped on 14th. The light generated from the illumination lamp 15 passes through the condenser lenses 16 and 17 to the glass plate 1.
8.19 is irradiated with the image frames held in the frame, and the light image is projected onto a screen (not shown) via the imaging lens 20. When operating the control knob 8, if the control knob 8 is rotated in the winding direction, the film F is conveyed in the winding direction by the rotation of the winding shaft 3, and the control knob 8 is rotated in the rewinding direction. For example, when the supply shaft 2 rotates in the direction of the arrow in the figure, the film F is transported in the rewinding direction, and when the control knob 8 is positioned at the stop position, the rotation of the supply shaft 2 and the take-up shaft 3 is stopped. However, the transport of film F is stopped. FIG. 2 is a flowchart showing the operation of the control circuit 5 when automatically loading the film F. In the figure, a detection means (not shown) detects that the cartridge 2b containing the film F is attached to the supply shaft 2 (step ■).
When it is confirmed that the automatic loading start switch 7 has been pressed (step 2), the capstan roller 10 is rotated and the capstan roller 10 is loaded onto the film F.
Move it so that it touches (step ■). When the sensor 6 detects that the leading edge of the film F sent out to the transport path 11 approaches the take-up reel 3a (step ■), the motor M2 is driven to rotate the take-up shaft 3 (
In step ■), when the detection means (not shown) detects that the film F is wound around the take-up roll 3a (step ■), the rotation of the capstan roller IO is stopped and moved away from the film F, and the film is taken up. Stop the rotation of shaft 3 (step ■). Here, it is detected whether or not the control knob 8 is located in the rewinding direction (step ■), and when it is located in the rewinding direction, this rewinding command is invalidated and a stop command or a winding command is issued. Wait until. When the control knob 8 is operated and a stop command or a winding command is issued, the film F is stopped or transported in the winding direction, and thereafter the rewinding command is valid. Thereafter, the film F is conveyed in any direction in the winding direction or the rewinding direction in accordance with a command from the control knob 8, and an image search operation is performed (step 2). FIG. 3 is a flowchart showing the operation when rewinding film F and searching for another film after the search operation is completed. In the figure, Steps ■ to Step ■ are similar to the conventional example shown in Figure 4, and after the search operation is completed (
Step ■), the control knob 8 is rotated in the rewinding direction (Step ■), the film F is rewound (Step ■), and the film to be used next is prepared (Step ■). When the entire film F has been rewound onto the supply reel 2a, the sensor 6 detects that the rewinding has been completed and the rotation of the supply shaft 2 is stopped. At this time, in this device, the automatic loading start switch 7 operates even when the control knob 8 is not at the stop position, so the film can be replaced without operating the control knob 8 and the feed shaft Attached to 2 (step ■)
Thereafter, by pressing the automatic loading start switch 7, automatic loading of the film is performed (step O). After automatic loading is completed, the rewinding command is invalid until a stop command or a winding command is issued in the control circuit 5, so if automatic loading is performed with the control knob 8 in the rewinding position, Therefore, film F will not be rewound due to malfunction. At this time, by temporarily moving the control knob 8 to the stop position or the winding position, subsequent rewinding commands are made valid, so from now on, the control knob 8
Freely operate the film F't@take direction. The image is searched by transporting it in any direction in the rewinding direction (step ■). As mentioned above, in the apparatus of this embodiment, the film can be reliably loaded automatically regardless of the position of the control knob 8, so it is not necessary to operate the control knob 8 when automatically loading the film. There is no need for automatic loading, and it can be loaded automatically with a simple operation. Also, when performing a search, since the amount of film F wound on the take-up reel 3a is small after automatic loading is completed,
There is almost no need to transport film F in the unwinding direction.
After the automatic loading is completed, the control knob 8 is operated to temporarily give a stop command to the control circuit 5, or the film is conveyed in the winding direction. Since images can be searched by transporting the film in any direction in the rewinding direction, there is no problem in image searching due to the inability to rewind the film immediately after automatic loading. In this embodiment, an example is given of a device in which film is automatically loaded by the operator pressing an automatic loading start switch, but the present invention is not limited to this. It is also applied to devices that automatically load film by detecting that it is attached to the supply shaft. (Effects of the Invention) The present invention has the above-described structure and function, and can prevent the film from being rewound due to a malfunction immediately after the automatic loading is completed, and can quickly perform automatic loading of the film with a simple operation. can. Therefore, when searching for film images using the device of the present invention, the search can be performed quickly.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing the configuration of a film conveying device according to an embodiment of the present invention, FIG. 2 is a flowchart showing the operation of a control circuit in the same embodiment, and FIG. 3 is a flowchart showing the operation in the same embodiment. Figure 4 is a flowchart showing the operation of a conventional film transport device. Explanation of symbols 1... Film transport device 2... Supply shaft 3... Winding shaft 4... Controller (film transport control means) 5...
・Control circuit (film rewinding control means) 6...sensor
7...Automatic loading start switch 8...Control knob F...Film factor diagram

Claims (1)

[Claims] It is equipped with a supply shaft to which a roll of film is mounted and a winding shaft to wind the film from the supply shaft, and the leading edge of the film mounted to the supply shaft is automatically wound around the winding shaft, and the film is wound around the winding shaft. In a film transport device that transports the film between a supply shaft and a take-up shaft in response to an instruction from a film transport control means after automatic loading, the film is temporarily removed from the film transport control means after the automatic loading is completed. 1. A film transporting device comprising a film rewinding control means for controlling film rewinding so that film rewinding is not performed until an instruction is given to stop or rewind the film.