JPH0367250B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <<Industrial Application Field>> The present invention relates to a roll film cartridge case used in an image scanning recording apparatus such as a color scanner having an automatic film winding device.

<<Prior art>> Conventionally, when recording a duplicate image using a color scanner, a recording film was wound around a recording cylinder manually. As the film size increases, it becomes extremely difficult to manually wind the film uniformly around a recording cylinder. Therefore, there has been provided a color scanner equipped with an automatic film winding device that automatically winds the film around the recording cylinder.

This automatic film winding device uses roll film as the film, and winds the roll film cut to a certain size around the recording cylinder. The film is housed in a cartridge case, and the roll film is rotatably supported within the cartridge case.

In this conventional example, the roll film is supported by a structure as shown in FIG.

That is, a pair of bearings 53 are fixed to the side wall 52 of the cartridge case 51, and the pair of bearings 53 are fixed to the side wall 52 of the cartridge case 51.
A shaft portion 56 of the film holder 55 is rotatably supported on the shaft portion 56 of the film holder 55, and a pair of flanges 57 and 58 that abut the side edges of the film are positioned on the shaft portion 56 of the film holder 55.
is fixed to the shaft portion 56 in a state where the relative position with respect to the recording cylinder is accurately aligned, and the other flange 58 is removably fixed to the shaft portion 56.

<<Problems to be Solved>> In the conventional example described above, the bearing that supports the shaft of the film holder is fixed to the case, and one flange is attached to the shaft to accurately position the film holder relative to the recording cylinder. Since it is fixed in alignment, the film should be wound in the proper position on the recording cylinder. However, due to clumsiness during the manufacturing process or transportation, the winding state of the roll film itself may be disordered or the width of the core or film itself may vary, as shown in Figure 7A and B. It is often the case that In such a case, in the conventional example described above, since the bearing is fixed to the case, the end face of the film does not match the reference flange, and there is a problem that the film cannot be wrapped at an appropriate position on the recording cylinder.

In addition, as shown in Figure 7B, if the film is disturbed in a bamboo shoot shape or there is a mechanical error in the automatic winding device, the film may be axially transferred to the film holder via the roll film during winding. However, since the bearing is fixed, the film holder cannot move in the axial direction, so the thrust force is absorbed by the film, which is wrapped around the recording cylinder. In some cases, lifting, wrinkles, etc. may occur. If such lifting or wrinkling occurs, it causes the film to scatter when the recording cylinder is rotated at high speed, deteriorates printing accuracy, etc., and becomes a fatal defect as a color scanner.

<<Means for Solving the Problems>> The present invention has been proposed to solve the above-mentioned problems. a film holder having a pair of flange members and holding a rolled film between the two flange members; and left and right bearings for pivotally supporting each end of the core shaft inside the cartridge case. A roll film cartridge disposed at a fixed position with respect to the cylinder around which the roll film is wound, comprising: a pair of bearing supports provided inside the left and right walls, and one of the bearings; A pair of sliding members interposed between the support stand and the left side bearing fitting and between the other bearing support stand and the right side bearing fitting, and sliding the left and right side bearing fittings in the axial direction of the mandrel. a pair of compression spring members interposed between the left side bearing tool and the left side wall and between the right side bearing tool and the right side wall, and a position of at least one of the compression spring members in the axial direction; The present invention is characterized by the provision of continuously variable adjustment means.

<<Operation>> In the present invention, the left and right bearings that pivotally support both ends of the center axis of the film holder are each supported by a pair of bearing supports so as to be slidable in the axial direction via a sliding member. Each of the bearings is biased in opposing directions by a pair of compression spring members.

That is, the film holder slides and is displaced together with the left and right bearings as a unit by the biasing force acting in the axial direction. Therefore, when the adjusting means changes the axial position of at least one compression spring member, the film holder is moved to a position where the elastic forces of the pair of compression spring members are balanced.

When an axial thrust force is applied to the film holder in this state, the film holder swings in the axial direction together with the left and right bearings, thereby absorbing the thrust force.

≪Example≫ Fig. 1 is an exploded perspective view of essential parts, Fig. 2 is a diagram schematically showing the output side of a color scanner with an automatic film winding device, Fig. 3 is a longitudinal sectional front view of a cartridge case, and Fig. 4 is a schematic diagram of the output side of a color scanner with an automatic film winding device. FIG. 3 is an enlarged view of section X, and FIG. 5 is a longitudinal sectional side view of the cartridge case.

The automatic film winding device unwinds a roll film 2 housed in a cartridge case 1, presses the film 2 into contact with the surface of a recording cylinder 4 using a squeeze roller 3, and holds the film 2 on the recording cylinder 4 by suction. , the film 2 is cut to a predetermined length, the film 2 is exposed to light from the recording head 5 sequentially in scanning lines, the exposed end of the film is removed from the recording cylinder 4 with a peeling tool 6, and the film is stored in a film case 7. It is designed to do so.

The cartridge case 1 is formed in a light-shielding manner, and a part of the bottom wall 8 is configured to be able to be opened and closed like a shutter. The cover plate 8a is configured to automatically open in conjunction with the closing of the cover plate 8a. Further, the roll film 2 is rotatably held in the case 1 while being attached to a film holder 9.

The present invention is characterized in that the support structure for the roll film in such a cartridge case is structured as described below.

A bearing support 11 is fixed to the side wall 10 of the cartridge case 1, and the bearing tool 1 is fixed to the bearing support 11.
2 and 13 are slidably supported in the axial direction of the film holder 9. Bearing support stand 11 and bearing tool 1
A rolling element (not shown) as a sliding member is interposed between the bearings 12 and 13, so that the bearings 12 and 13 can be moved easily. A compression coil spring 14 is disposed between the bearing fitting 12 located on the left side in the figure and the left side wall 10L of the case, and presses and urges the left bearing fitting 12 in the right direction. on the other hand,
A spring guide pin 15 is attached to the bearing fitting 13 located on the right side in the figure so as to be retractable, and a compression coil spring 17 is arranged between the right end flange portion 16 of the spring guide pin 15 and the bearing fitting 13. Yes (4th
figure). An adjustment screw 18 is screwed onto the right side wall 10R of the case in correspondence with the right end flange portion 16 of the guide pin 15, and when the adjustment screw 18 comes into contact with the right side flange portion 16 of the guide pin 15, Using the contact position as a reference point, the right side bearing 13 is urged leftward by the elastic force of the compression coil spring 17. That is, in this embodiment, the adjusting means is constituted by the guide pin 15, the right end flange portion 16 of the guide pin, and the adjusting screw 18, and continuously changes the position of the compression coil spring 17 in the axial direction, thereby adjusting the position of the film holder 9. It is configured to adjust the position in the axial direction. In addition, a bearing tool 1 is provided at the inner end portion of each bearing support stand 11.
2 and 13 are provided, and the stopper member 20 suspended from the bearing 12 is received on the left bearing support, and the sliding portion of the rolling element is received on the right shaft support. .

The film holder 9 includes a core shaft 22 passing through the core tube 21 of the roll film 2, and a reference flange member 23 fixed to the right end of the core shaft 22.
and a movable flange member 24 removably fixed to the left end portion of the core shaft 22, and a core tube of the roll film 2 is formed on the opposing inner surfaces of both flange members 23 and 24. A clamp 25 for fixing the core tube 21 by fitting inside the core tube 21 is integrally formed. Further, a driven gear 26 for rotationally driving the film holder 9 is integrally formed on the outer surface of the reference flange member 23. This film holder 9 has both ends of a shaft 22 removably supported in bearing pockets 27 which are recessed in the inner surfaces of both bearings 12 and 13 and open upward.

As shown in FIG. 5, a marker 28 is fixed to the front wall of the cartridge case 1 as a guide for adjusting the setting position of the film holder 9.
The marker 28 includes a pointing member 29, a holding member 30 that swingably holds the pointing member 29, and
A holding member 30 is fixed to the front side wall of the cartridge case 1.

Reference numeral 32 in the figure is a guide tool made of a plate spring for guiding the unwound film, and the tip of this guide tool 32 is designed so as not to damage the film surface.
It is coated with fluorinated ethylene resin, etc. code 33
1 is a drive gear mechanism for rotationally driving the film holder 9, and is driven by an electric motor (not shown).

In the above embodiment, the reference flange member 23 and the movable flange member 24 in the film holder 9 are connected by the shaft 22.
Both flange members 23 and 24 may be formed as independent members, and both flange members 23 and 24 may be connected by the core tube 21 of the roll film 2.

Next, a procedure for mounting a roll film into a cartridge case using the apparatus of the embodiment will be explained.

Cartridge case 1 to film holder 9
is taken out, the movable flange member 24 is extracted from the core shaft 22 of the film holder 9, the roll film 2 is inserted into the core shaft 22, and then the movable flange member 24 is externally fitted onto the core shaft 22 and fixed. After that,
Clamp 2 formed on both flange members 23 and 24
5 is activated to integrate the roll film 2 and the film holder 9. At this time, the rolled film 2 and the side end portions are in contact with both flange members 23 and 24. The film holder 9 to which the roll film 2 is fixed is supported by both bearings 12 and 13, and with the indicating member 29 of the marker 28 tilted toward the roll film 2, the end surface of the film is aligned with the indicating surface of the indicating member 29. Operate the adjustment screw 18 to This allows the film to be placed in the recording cylinder 4.
This means that it is set at a predetermined position.

The roll film 2 set in this way is
Even if a thrust force is generated due to poor winding of the roll film itself during the winding operation on the recording cylinder 4, the two compression coil springs 1 that oppose the bearings 12 and 13 holding the film holder 9
4 and 17 to support the film holder 9 so as to be movable in the axial direction. The film will not wrinkle or float.

<<Effects>> In the present invention, the film holder can be slidably displaced together with the left and right bearings in the axial direction, and the film holder can be continuously adjusted to an appropriate position by the adjusting means. ,
Even if the winding state of the roll film wound around the film holder is irregular or there is an error in the width dimension of the roll film, the roll film can be aligned correctly with respect to the recording cylinder and the roll film can be placed in the specified position of the recording cylinder. It becomes possible to wrap the

Furthermore, if the winding state of the roll film is disordered, when winding it around the recording cylinder,
Although a thrust force is generated in the axial direction of the film holder, this thrust force is easily absorbed because the film holder swings integrally in the axial direction with the left and right bearings. Therefore, no load is placed on the roll film, it can be wrapped neatly around the recording cylinder without lifting, wrinkles, etc., and it is possible to prevent film scattering and deterioration of printing accuracy during scanning recording.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view showing the film holder support structure, Fig. 2 is a schematic side view of the output side portion of a color scanner with automatic film winding device, Fig. 3 is a longitudinal sectional front view of the cartridge case, and Fig. 4 is Third
Figure 5 is an enlarged view of the X section in the figure, Figure 5 is a sectional view taken along the line Y-Y in Figure 3, Figure 6 is a view corresponding to Figure 3 showing the conventional column, and Figures 7 A and B are examples of defective roll films. FIG. 1... Cartridge case, 2... Roll film, 4... Recording cylinder, 9... Film holder, 10L... Left wall, 10R... Right wall, 1
1...Bearing support stand, 12...Left side bearing tool, 13...
... Right side bearing tool, 14, 17 ... Compression coil spring,
15... Spring guide pin, 16... Right end flange portion, 18... Adjustment screw, 21... Core tube of roll film, 22... Core shaft, 23... Reference flange member, 24... Movable flange member.

Claims (1)

[Claims] 1. A cartridge case having opposing left and right walls to shield the interior from light, and a film holder having a core shaft and a pair of flange members and holding a rolled film between the two flange members. and left and right bearings that respectively pivotally support each end of the core shaft inside the cartridge case, and are arranged at a constant position with respect to the recording cylinder around which the roll film is wound. In the roll film cartridge, a pair of bearing supports are provided inside the left and right walls, respectively, between one of the bearing supports and the left bearing, and between the other shaft support and the right side. a pair of sliding members respectively interposed between the left and right bearings in the axial direction of the shaft; and between the left bearing and the left wall, and between the right bearing and the right side wall. a pair of compression spring members each interposed between the right side wall and an adjusting means for continuously varying the position of at least one of the compression spring members in the axial direction;
A cartridge with a roll film axial position adjustment device.