JPH0239137A - Film carrier - Google Patents

Abstract

PURPOSE:To rapidly and surely print even various types of a film by changing the combination of a first guide and a second guide and dealing with various widths of the film. CONSTITUTION:When the width of a negative film F is changed and the narrow negative film F is applied, a second guide 18 is moved to the part of notches 12B in the both edges of a groove 14 to pull out the narrow projecting strips 18A of the second guide 18 from the narrow grooves 12A. Then, the second guide 18 is lifted up in the direction of B and its rear/front are reversed, and the narrow projecting strips 18A is engaged with the narrow grooves 12A again; a guiding path of a negative film F is formed of a film guiding groove 22 between the first guide 12. This guiding path is narrower than that formed of a groove surface 14A. Thus, the narrow negative film F can be surely guided in the direction of an arrow A without meandering, and an image is printed thereon in a way the same as a wide negative film.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a film carrier that guides a negative film to a printing position when printing an image onto a photosensitive material.

0 Background Art] In a printing apparatus that prints an image of a negative film onto a photosensitive material, the negative film is guided in the longitudinal direction by a film carrier and placed accurately on the optical axis. For this reason, the film carrier is formed with grooves that guide both sides of the negative film in the width direction, and when a negative film of a different width is used, it is necessary to replace the film carrier with a film carrier of a different size. be.

The present invention takes the above-mentioned facts into consideration and aims to obtain a film carrier that can accommodate negative films of different width dimensions.

[Summary and operation of the invention]

The present invention is a film carrier that guides a negative film to a printing position during image printing, and includes a first guide, a first guide, and a first guide, which are arranged below the negative film and have a sliding surface for the negative film. It is characterized by having a second guide which can be engaged in an inverted manner and is located above the negative film and has a guide groove formed on at least one of the front and back surfaces for guiding the side surface of the negative film.

The second guide is formed with a guide groove for guiding at least the side surface of the narrow negative film, and the guide means for guiding the side surface of the wide negative film is formed on the opposite surface of the second guide or on the first
Form into a guide.

Therefore, in the present invention, when applying negative films of different width dimensions, the second guide is turned over and engaged with the first guide, thereby forming a guide formed on at least one of the front and back surfaces of the second guide. The groove can correspond to the negative film.

[Embodiments of the invention]

Film carrier 1 of the present invention as shown in Figure 1.2
0, the first guide 12 is formed in the shape of a thick plate, and grooves 14 are formed on the surface of the first guide 12 for guiding the negative film F that is fed in the six directions of the arrows.

An opening 16 (FIG. 7) is formed in a part of the bottom of this groove 14 and is aligned with the optical axis.

A pair of second guides 18 arranged to sandwich the optical axis are engaged with this groove 14 to restrict movement of the negative film F in the width direction. That is, these second guides 18 have narrow protrusions 18A formed at both ends in the width direction, and these narrow protrusions 18A are inserted into the narrow grooves 12A formed on the side surfaces of the grooves 14 in the six directions of the arrows. It is now possible to do so.

As shown in FIG. 1, the longitudinal end of the narrow groove 12A communicates with a notch 12B that enlarges the width of the groove 14.

Therefore, when each of the second guides 18 is slid to both ends of the groove 14 in the six directions of arrows or in the opposite direction, and the narrow protrusion 18A is moved to the notch 12B, the first guide 18 is moved in the direction of arrow B.
It can be removed from.

Both side surfaces 14A of the groove 14 serve as guide surfaces for guiding the side surfaces of a wide negative film F (FIG. 5), and when guiding this wide negative film F, one surface of the second guide 18 A flat surface 18B formed in the groove 14 is arranged to face the bottom surface of the groove 14. Further, a film guide groove 22 for guiding a narrow film is formed on the other side surface of the second guide 18. Therefore, when the second guide 18 is turned upside down from the state shown in FIG. 5 as shown in FIG. 4, the film guide groove 2 of the second guide 18
2 is spaced apart from the bottom surface of the groove 14. As a result, both sides of the narrow negative film F are guided to the facing surface 22A of the guide groove 22.

Note that in order to move this negative film F smoothly, groove 1 is
4, a pair of shallow grooves 24 are formed along the longitudinal direction of the film to correspond to a wide film, and a shallow groove 28 is disposed between the shallow grooves 24 with a protrusion 26 interposed therebetween.
is formed corresponding to the center portion in the width direction of the film.

The shallow groove 24 forms a protrusion 32 between it and the groove side surface 14A.

Therefore, both sides of the negative film F are in contact with the protrusion 32 and the protrusion 26 in a narrow area, reducing frictional resistance.
In addition, the dust etc. adhering to the negative film F can be found in shallow grooves 24.
It is supposed to fall to 8. This protrusion 32 is preferably formed slightly higher than the protrusion 26.

Note that the second guide 18 has a shallow groove 2 in the state shown in FIG.
4. The outer shape that engages with the protrusion 32 is the film guide groove 22
Although it is formed adjacent to the shallow groove 24 and the protrusion 32, there may be a gap between the shallow groove 24 and the protrusion 32.

As shown in FIG. 2, a pair of second guides 18 are arranged on both sides of the optical axis to guide the negative film F on both sides of the optical axis, and an upper mask 36 is arranged on the optical axis. The printed surface (elephant) is pressed against the lower mask 102.

This upper mask 36 has a baking opening 36A formed therein as shown in FIG. 8, and is attached to the tip of the mask holder 38 via four pins 42.

A compression coil spring 44 arranged around the pin 42 supports the upper mask 36 in a floating state from the mask holder 38.

This mask holder 38 has a baking opening 38A formed therein, and is detachably attached to the pressure bonding plate 46. That is, an engagement block 52 that engages with a pair of positioning pins 48 protruding from the crimp plate 46 is fixed to the mask holder 38 . This engagement block 52 has a circular hole 54 that accommodates one positioning pin 48 , and a circular hole 54 that accommodates the other positioning pin 48 .
Long grooves 56 for accommodating 8 are respectively formed. In addition, a small hole 62 is formed in this mask holder 38 to receive a device determining protrusion 58 made of a crimp plate 46 with the positioning pin 48 securely inserted into the circular hole 54 and the long groove 56. The insertion position of the upper mask 36 into the mask holder 38 is determined by the following. This positioning protrusion 58 is biased in the direction of protrusion from the crimp plate 46 by the biasing force of a compression coil spring.

The end of the crimp plate 46 opposite to the end to which the mask holder 38 is attached is pivotally supported by a pin 66 to the first guide 12 . The second pin 66 is parallel to the film transport direction.

One side of an L-shaped plate 68 is fixed to the side surface of the crimp plate 46, and the other side of the L-shaped plate 68 receives the driving force of a solenoid 72 provided to the first guide 12. That is, as shown in FIG. 6, the drive shaft 72A of the solenoid 72 is pivotally supported by one end of an arm 74, and the intermediate portion of this arm 74 is pivotally supported by a pin 76 to the first guide 12.

As shown in FIG. 2, the other end of the arm 74 has a shaft 82.
passes through the shaft 82, and a compression coil spring 84 attached to the intermediate portion of the shaft 82 is interposed between the arm 74 and a bearing 86 that is pivotally supported at one end of the shaft 82.
The enlarged diameter head 82A is in contact with the arm 74. Further, in this state, the bearing 86 corresponds to the L-shaped plate 68.

Therefore, when the solenoid 72 is energized and generates an excitation force, the arm 74 is biased clockwise in FIG.
8, the pressure bonding plate 46 rotates around the bin 66, presses the upper mask 36 against the lower mask 102, and clamps the negative film F therebetween. However, this solenoid 72
The upper mask 36 is connected to the first guide 12 while the power is cut off to the upper mask 36.
An elastic body (not shown) is disposed between the pressure bonding plate 46 and the first guide 12 to lift it away from the pressure bonding plate 46 .

As shown in FIG. 6, one side of an L-shaped bracket 88 is fixed to the intermediate portion of the arm 74, and a stopper screw 92 is screwed onto the other side of the L-shaped bracket 88. This stopper screw 92 limits the rotation angle of the arm 74 by coming into contact with the surface of the first guide 12.
By changing the amount of engagement with the L-shaped bracket 88, the amount by which the crimp plate 46 rises when power is cut off to the solenoid 72 is limited. Further, a stopper screw 94 is similarly screwed into the L-shaped plate 68, and limits the amount by which the pressure bonding plate 46 is pressed down by the urging force of the solenoid 72.

As shown in FIG. 7.10, the lower mask 102 has a positioning hole 104 inserted into a device positioning pin 106 constituted by the first guide 12, so that the opening 102A is aligned with the optical axis.

A film guide groove 102B is formed on the surface of the lower mask 102, and its side surface 102C serves as a guide in the film width direction. The spacing between the side surfaces 1020 may be adjusted to a wider film size, or the lower mask 102 may be replaced by changing the film width size.

In addition, upstream and downstream of the lower mask 102, there are rollers 1 that clamp the film and apply conveying force to the upper and lower surfaces of the film.
10 is provided and connected to a drive source (not shown).

Next, the operation of this embodiment will be explained.

When applying a wide negative film, use the second guide 1.
8 are placed on both sides of the optical axis as shown in FIG.
Insert in the direction of the arrow.

Therefore, the side surfaces 14A of the groove 14 guide both sides of the negative film F. When the solenoid 72 is energized with a specific image frame corresponding to the optical axis, the solenoid 72 moves to the arm 74.
is rotated in the clockwise direction in FIG.
Pressed to 2B. Therefore, the negative film F is clamped and fixed between the upper mask 36 and the lower mask 102, and in this state, the negative film F is illuminated by light from a light source (not shown).
The image is printed onto a photosensitive material. Thereafter, multiple images are printed using the same procedure.

When the width dimension of the negative film F is changed and a narrower negative film F is applied, the second guide 18 is moved to the notch 12B at both ends of the groove 14, and the narrow protrusion of the second guide 18 is removed. 18A is pulled out from the narrow groove 12A. Here the second
When the guide 18 is lifted in the direction of arrow B, turned over, and the narrow protrusion 18A is engaged with the narrow groove 12A again, the fourth
As shown in the figure, the film guide groove 22 is connected to the first guide 12.
A guide path for the negative film F is formed between the two. This guide path is narrower than the guide path formed by the groove side surfaces 14A, and can reliably guide the narrow negative film F in the six directions of the arrows without meandering.

On the other hand, as shown in FIG. 8, the upper mask 36 removes the mask holder 38 from the pressure bonding plate 46, and loads the mask holder 38 with a different mask opening into the pressure bonding plate 46. In this case, as shown in FIG. 9, if the shaft 82 is moved largely in the axial direction against the biasing force of the compression coil spring 84, the bearing 86 will be separated from the L cedar plate 68, so the crimp plate 46 will be It can be rotated approximately 90 degrees around the pin 66, resulting in the state shown in FIG. Therefore, if the upper mask 36 is replaced in this state, the replacement work is extremely simple.

Thereafter, the image printing operation is performed in the same manner as in the case of wide negative film.

Note that the second guide 18 is provided with a film guide groove having a width different from that of the film guide groove 22 on its flat surface 18B,
It may also be possible to accommodate a wide negative film during reversal.

〔Effect of the invention〕

As explained above, the present invention is advantageous in that it can handle films of different width dimensions by changing the combination of the first guide and the second guide, so that printing can be performed quickly and reliably even when the film types are different. It has a good effect.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a film carrier to which the present invention is applied, Fig. 2 is a plan view of the film carrier, Fig. 3 is a perspective view of the second guide, and Fig. 4 is taken along line IV-IV in Fig. 1. 5 is a sectional view showing the second guide in FIG. 4 inverted, FIG. 6 is a sectional view taken along the line VI-VI in FIG. 2, and FIG. FIG. 8 is a perspective view of the upper mask holder, FIG. 9 is an operational diagram showing a part of FIG. 2, and FIG. 10 is a plan view of the lower mask. F... Negative film, 10... Film carrier, 12... First guide, 18... Second guide, 22... Film guide groove. Figure 2 76 82A 46 3rd

Claims (1)

[Claims] (1) A film carrier that guides the negative film to the printing position during image printing, including a first guide that is placed below the negative film and has a sliding surface for the negative film, and a film carrier that is turned over to the first guide. A film carrier comprising: a second guide that is engageable and located above the negative film, and has a guide groove formed on at least one of the front and back surfaces for guiding the side surface of the negative film.