JPH03267931A - Negative film carrier - Google Patents

Abstract

PURPOSE:To preclude a negative film from flawing by rotating a turntable from a reference position to one side about a negative film travel path and setting it at the printing position for a full-size image, and swiveling the turntable to the other side and setting it at a printing position for a half-size image. CONSTITUTION:This negative carrier is equipped with the turntable 32 which can rotate on the optical axis P of printing of the negative film F and is provided with a printing opening and a positioning means 42 which swivels the turntable 32 from the reference position to one side about the negative film travel path to obtain the printing position FP for the full-size image and swivels the turntable to the other side to the printing position HP for the half-size image. Consequently, a slanting part between the travel path L of the conveyed negative film F and the turntable 32 decreases in the tilt angle from the negative film travel path L. Further, the slanting part is formed of a curved part FT has the film length direction curved in the thickness direction, so the negative film F is not tensed at the curved part between the slanting part and film travel path L. Consequently, the installation space is reduced and the image surface of the negative film is prevented from flawing.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a negative carrier capable of printing both full-size images and half-size images when printing images from negative film onto photosensitive materials such as photographic paper. Regarding.

[Conventional technology]

Generally, in a printing device that feeds a mixture of negative films with full-size images and negative films with half-size images, the negative carrier has a printing opening for full-size images and a half-size image. Because it differs depending on the purpose,
It is necessary to replace the negative carrier each time.

On the other hand, negative carriers are used in which a single negative carrier can handle both full-size images and half-size images. (See Special Publication No. 59-27891 and Special Publication No. 61-5135). In this negative carrier, a turntable is provided in the middle of the negative film running path, and a printing opening is provided at the rotation center of the turntable. When printing a full-size image, the negative film is placed on a straight travel path, but when printing a full-size image, the turntable rotates 90 degrees and places the middle part of the negative film on the negative film travel path. It is in a state where it is crossed at 90 degrees.

At the same time, the opening area of the printing opening is reduced to an opening area corresponding to a half-size image, and the half-size image is printed.

In this way, since it is possible to print not only full-size images but also half-size images with a single negative carrier, there is no need to replace the negative carrier each time, improving work efficiency.

However, when printing a half-size image, the turntable is rotated 90 degrees, so the negative that exists in the area connecting the middle part of the negative film placed on the turntable and the other middle part of the negative film remaining on the negative film travel path. The film is inclined to the negative film running path. Therefore, the installation area of the negative carrier becomes large, including this inclined portion, and the negative carrier becomes large. In addition, the bent part formed between this inclined part and the negative film on the film running path is guided by a guide roller, but the negative film is bent under tension, causing damage to the image surface. Sometimes.

[Problem to be solved by the invention]

In consideration of the above facts, the present invention aims to provide a negative carrier that requires a large installation space and does not cause damage to the image surface of the negative film.

[Means to solve the problem]

The invention of claim (1) of the present application is a negative carrier in which a printing part for photosensitive material is provided in the middle part of a negative film running path, which is rotatable around the printing optical axis of the negative film and has a printing opening. A turntable is provided, and a positioning means for rotating the turntable from a reference position lid to one side with respect to a negative film running path to make a full-size image printing position and to the other side to make a half-size image printing position. It is characterized by having the following.

In this way, in the present invention, the full-size image printing position and the half-size image printing position are arranged by rotating in different directions from the reference position lid.
The inclined portion between the conveyed negative film running path and the turntable has a small inclination angle from the negative film running path, and therefore the installation space as a whole may be small.

In addition, since this inclined part is a curved part in which the longitudinal direction of the film is bent in the thickness direction, no tension is generated in the negative film at the bent part between the inclined part and the film running path. There is little damage to the image surface even if it comes into contact with the guide roller.

The positioning means may include a moderation mechanism that stops the turntable at the full-size image printing position and the half-size image printing position, or a driving means such as a motor that rotates the turntable to these positions.

The invention of claim (4) of the present application includes a base plate in which a negative film running path is linearly arranged, and a turntable in which a printing opening and a negative film guide path are formed on the base plate and can be rotated around a printing optical axis. A table, a reference position where the negative film guide path of the turntable is aligned with the negative film travel path of the base plate, a full size image printing position where the turntable is rotated from this reference position by a predetermined angle in one direction, and a full size image printing position in which the turntable is rotated by a predetermined angle to the other side. The present invention is characterized in that it has a positioning means for positioning at a half-size image printing position, and a negative film transport means provided in the negative film running path and the negative film guide path and driven independently.

Therefore, in this invention, when the turntable is set at the full-size image printing position and the half-size image printing position,
A curved portion can be actively formed in the negative film located between the negative film guide path of the turntable and the negative film running path of the base plate. That is, by independently controlling the conveyance of the negative film conveying means in the negative film guide path and the negative film running path, a curved portion bent in the thickness direction is formed in the intermediate portion of the negative film.

[Embodiments of the invention]

1 to 3 show an embodiment of a negative carrier to which the present invention is applied.

The base plate 12, which is fixedly disposed in the printing device, has a linear running path for the negative film F at approximately the center thereof, and a pair of guide rollers 14, 16 guide the negative film
It is designed to press and guide the vehicle onto the driving path. These guide rollers 14.16 are pivoted to the tip of an arm 18, and the arm 18 is pivoted to a bracket 22 protruding from the base plate 12 and travels on the guide rollers 14.16 under the biasing force of a spring 24. It is pushing towards the road.

These guide rollers 14 , 16 are also connected to an output shaft gear of a motor 28 via a timing belt 26 . This causes the guide rollers 14, 16 to move towards the motor 2.
The negative film can be driven in the longitudinal direction with a driving force of 8.

A circular hole 12A is formed in the center of the base plate 12, in which a turntable 32 is accommodated and supported. The axis of this turntable 32 is aligned with the printing optical axis P and is vertical, and a notch is formed in the center of the top surface to form a negative film guide path 32A. This negative film guide path 32
Both ends of A are widened portions 32B with enlarged width dimensions. Further, this turntable 32 has a printing aperture 34 formed on the printing optical axis.

This printing opening 34 is used for printing a full size image formed on a negative film. The state in which this longitudinal direction coincides with the running path is the reference position of the turntable 32.

A ring gear 36 is formed on the side surface of the turntable 32 and meshes with a pinion 38.

This pinion 38 is rotated by receiving the driving force of a motor 42, so that the turntable 32 is rotated around its axis. In this embodiment, as shown by the solid line in FIG. 1, the guide path 32A, which is the longitudinal direction of the burning opening 34, is rotated 45 degrees from the reference position counterclockwise in FIG. This is the printing position FP of the size image. The half-size image printing position H is rotated 45 degrees from the reference position in the opposite direction, that is, clockwise in FIG.
It is P.

A moving plate 44 disposed on the bottom of the turntable 32 swings correspondingly to the printing opening 34, and when printing a half-size image, the moving plate 44 enters both longitudinal ends of the printing opening 34 and closes the printing opening 34. The opening area is made to correspond to the size of the half-size image. The moving plate 44 is manually driven by an operator, but a driving force such as a motor may also be used.

Guide rollers 46 and 48 are arranged within the negative film guide path 32A with the printing opening 34 in between. These guide rollers 46, 48 are pivotally supported on the arm 52,
This arm 52 is pivotally supported on the side surface of the negative film guide path 32A. Further, a spring 56 is arranged between the arm 52 and the lid 54 of the turntable 32, and the guide rollers 46, 48 press the negative film toward the bottom surface which is the film movement surface of the negative film guide path 32A. .

The guide rollers 46,48 are each connected to the output shaft of a motor 66 via a timing belt 62, so that when these motors 66 rotate, the guide rollers 46,48 can generate a driving force to the negative film. It has become.

An open lower 2 is provided in the middle of the running path at a position between the guide rollers 14, 16 and the turntable 32,
A flip-up plate 74 is arranged.

This flip-up plate 74 has a shaft 76 supported by the turntable 32 and is biased by a spring 77 in the closing direction of the open lower part 2, and is erected on the base plate 12 by the biasing force of a solenoid 78, and The negative film F on the film is curved.

Next, the operation of this embodiment will be explained.

When the leading edge of the negative film F is sent to this negative carrier, the turntable 32 is set as the reference position and the guide path 3
2A matches the driving route.

As a result, the leading edge of the negative film F is moved to the guide roller 1.
4 receives a conveyance force and enters the guide path 32A, and is further sent out from the guide path 32A by guide rollers 46 and 48 to reach the guide roller 16. In this state, each flip-up plate 74 is in a lying state with the opening lower 2 closed, so that the conveyance of the negative film F cannot be prevented. That is, the guide rollers 46, 48 are driven at the same rotational speed as the guide rollers 14, 16.

When printing a full-size image, the motor 42 drives the first
The turntable 32 is rotated counterclockwise to the full-size image printing position FP as shown by the solid line in the figure. Simultaneously with or before this turning, the guide rollers 46 and 48 are stopped, and the guide roller 14 is driven to send out the negative film F to form a curved portion FT of the negative film between the guide path 32A and the guide roller 14. I'll keep it. In addition, if the negative film F is also placed between the turntable 32 and the guide roller 16, the guide roller 16 is stopped and the guide rollers 46 and 48 are driven to bend the negative film between them as well. FT is formed in advance. This causes the turntable 32 to move to the full-size image printing position FP.
When this occurs, a curved portion FT of the negative film is formed between the turntable 32 and the guide rollers 14, 16.

Thereafter, the full-size image on the negative film F is printed onto the photographic paper PP by printing light from a light source (not shown). After the printing, the motors 28, 66, and 28 are driven again, and the negative film F is sequentially sent out onto the traveling path frame by frame of the full-size image to perform the printing operation.

Therefore, the curved state of the negative film does not change,
As shown in FIG. 1, the curved portion FT is inclined with respect to the intermediate portion of the negative film on the traveling path and on the guide path 32A in plan view. However, this curved part FT
has no tension and is only rotated by 45 degrees from the reference position, so the guide rollers 14.16 and 46.4
8 is not pressed too hard, and there is little damage to the image surface.

If there is a half-size image in the middle of the negative film F, the motor 42 is driven in the opposite direction and the turntable 32
reaches the half-size image printing position HP, which is rotated 90 degrees from the full-size image printing position FP. At this printing position HP, the turntable 32 is rotated 45 degrees clockwise from the reference position. At the same time, the burning opening 34
The moving plate 44 is moved by manual operation to open the burning opening 34.
Close both ends by 1/2. Therefore, even though the half-size image on the printing optical axis P is rotated 90 degrees from the full-size image, a half-size image printing aperture is formed. Also, the curved part FT of the negative film is the first
As shown by the imaginary line in the figure, the motor 28.66 is formed to have the same length as the printed state of the full-size image, and the motor 28.66 is driven for each printed size of the half-sized image to connect the turntable 32 and the guide roller 14.16. The negative film F is conveyed while maintaining the curved portion formed in between, and the printing operation is performed.

Even in this half-size image printing position, the turntable 32 is only rotated by 45 degrees from the reference position, so the axis of the negative film from the guide roller 14, 16 to the negative film curved portion FT is Since there is no tension at the bent portion and the amount of bending is smaller than that of a conventional 90 degree turn, the image surface is less likely to be damaged at this bent portion.

In the present invention, the curved portion FT of the negative film is formed at both the printing position of the full-size image and the printing position of the half-size image, so when switching between these positions, the negative film F is driven in the longitudinal direction to remove the curved portion. This eliminates the need for operations to form curved portions or eliminate curved portions.

〔Effect of the invention〕

Since the present invention has the above-described configuration, it has an excellent effect of preventing damage to the image surface at the bending guide portion of the negative film even when dealing with both full-size images and half-size images.

[Brief explanation of drawings]

FIG. 1 is a plan view of a negative carrier to which an embodiment of the present invention is applied, showing a full-size image printed, FIG. 2 is a sectional view taken along the line ■-■ of FIG. 1, and FIG. 3 is an exploded view of FIG. FIG. L... Running path, F... Negative film, 32... Turntable, 32A... Negative film guide path, 34... Printing opening.

Claims (4)

[Claims] (1) A negative carrier in which a printing part for photosensitive material is provided in the middle part of a negative film running path, a turntable that can rotate around the printing optical axis of the negative film and is provided with a printing opening, and this turntable. A negative carrier characterized by having a positioning means that rotates from a reference position to one side with respect to a negative film running path to set a printing position for a full-size image, and rotates to the other side to set a printing position for a half-size image. . (2) Claim (1) characterized in that the rotation angle from the reference position by the positioning means is set larger at the printing position of the half-size image than at the printing position of the full-size image.
Negative carrier described in . (3) The negative carrier according to claim 1, further comprising a drive means for moving the turntable from a reference position to a full-size image printing position and a half-size image printing position. (4) A base plate on which a negative film running path is arranged linearly, a turntable on which the base plate can be rotated around the printing optical axis and a printing opening and a negative film guide path are formed, and the negative film on this turntable. From this reference position, the guide path is aligned with the negative film travel path of the base plate, and from this reference position, the turntable is rotated at a predetermined angle to one side to determine the full-size image printing position, and to the other side, the turntable is rotated at a predetermined angle to the half-size image printing position. A negative carrier comprising: a positioning means; and a negative film transport means provided on the negative film running path and the negative film guide path and driven independently.