JPH0315174B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a photographic printing apparatus (hereinafter referred to as a "printer").

Conventional printers automatically or manually transport roll negatives or strip negatives, position the frames to be printed on a printing aperture station, and print them onto photographic paper placed opposite the negative film. was being carried out.

Once the negative film has been developed and the negative image has been printed onto photographic paper, the printed roll negative or strip negative is removed from the printer and manually transferred to another process, resulting in a negative sheet loading process that is completely separate from the simultaneous printing process. The negative was cut and stored in a negative sheet.

For this reason, (1) it is necessary to assign a dedicated person to load the negative sheets, which increases labor costs;

(2) Shipping time for simultaneous printing will be extended due to additional steps.

(3) In case of roll type, negative sheet cannot be loaded until one roll of simultaneous printing process is completed.

(4) Even in the case of strips, efficiency cannot be improved unless the batch is made up of about 30 strips.
There is some waiting time in the process.

There were other drawbacks.

Furthermore, when loading a roll negative that has been printed onto the next negative sheet, if the roll negative is simply wound up and set, the printing order and cutting order will be reversed, and the negative sheet will be The vertical direction of the cut is not necessarily the same as that at the time of cutting. Therefore, conventionally, in the negative sheet loading process, before cutting and loading the negative film, the roll negative is rewound once to make it in the same state as before printing started. For this reason, rewinding processing becomes necessary, resulting in inconveniences such as a longer simultaneous printing processing time and the risk that the negative may be damaged by the rewinding processing.

There are the following reasons why it is necessary to make the order and orientation of the negatives during printing the same as those during negative cutting. First, in the upright type printers that are the mainstream, when a person attempts to view a negative image in an upright position, the emulsion surface on which the image is recorded always faces upward, and the top of the negative is on the right. This is because most cameras use such a structure to record images on film. usually,
The negative feed direction during printing is from left to right when the operator is facing the conveyance line, just like in general conveyance mechanisms in the world, so when the negative image can be viewed upright, Printing is performed from the smallest frame number to the largest frame number. This is also the same as the order in which the camera takes pictures, so there is no sense of incongruity.

In other words, the printer has a mechanism that satisfies all of the following conditions.

The ability for people to view negative images upright for easy verification.

To avoid any discomfort, the negatives must be transported from left to right with the operator directly facing the transport line.

The frame numbers are printed from the smallest to the largest.

It should be noted that even unmanned printers need to be able to manually print for condition setting, trial printing, or extra prints, and the above-mentioned condition of being able to view images upright is essential.

The majority of printers in the world have a structure that meets all of the above requirements and does not cause any discomfort.

Next, it is desirable that the negative cutting inserter satisfy the following three conditions.

Cut the negative sheet from the lowest frame number to the highest and insert them into the negative sheet. This must be followed in order to automate the system when reordering.
If this order of negative insertion is not followed, it is likely that the wrong frames will be specified when reordering.

To avoid any discomfort, the negatives must be transported from left to right, just like in a printer.

When checking the finished print at the same time, the negative image must appear as an erect image.

As a result, cutting and insertion into the negative sheet are performed in the same order and orientation as the printer.

In particular, the above requirements are essential for a negative cutting inserter, and for this reason, in the case of a rolled negative that has already been printed, it is necessary to rewind the film and change its direction. Such a rewinding operation is not desirable because it requires time and manpower and may also cause damage to the negative.

The present invention is intended to solve the above-mentioned problems in the conventional photographic printing process, and an object of the present invention is to provide a printer that can complete a simultaneous printing process and a negative sheet loading process in the same device. shall be.

The above object of the present invention is to provide a negative film transport roller for transporting a roll negative that has passed through a print gate and inserting it into one row of a negative sheet, a sensor for detecting a notch in the roll negative, and a sensor for detecting a notch in the roll negative, and a negative film transport roller for transporting a roll negative that has passed through a print gate and inserting the roll negative into one row of a negative sheet. When the film transport roller has sent the roll negative a predetermined length, a cutter cuts the roll negative that is halfway inserted into the negative sheet, and an alarm is activated if a notch is not detected while the roll negative is fed the predetermined length after the previous film cut. a dancer section forming a loop of the roll negative between the print gate and the cutter to absorb the difference in processing speed between the printing process and the cutting process; This is achieved by providing means for transporting the negative sheet by one line in a direction perpendicular to the transport direction of the roll negative after passing the film transport roller.

In addition, in the present invention, the strip negative means
Negative film itself for 12-frame, 20-frame, 24-frame, or 36-frame photography is used, and a roll negative refers to a long film made by joining multiple strip negatives as described above.

Hereinafter, the present invention will be explained in detail based on the drawings.

FIG. 1 is a schematic diagram of a printer implementing the present invention. In the figure, 1 is a controller such as a microcomputer for controlling each function. Reference numeral 2 denotes a notch detecting means for detecting a notch 6 attached to one edge of a negative film 4 having a plurality of image frames 5. Reference numeral 3 denotes a motor for driving a negative film feed roller 19 for transporting the negative film. Further, 15 is a print gate. The dancer section C connects the printing section A and the negative film cutting section B to absorb the difference in processing speed between the printing process and the cutting process, and temporarily stores the negative film 4 in a loop shape. In order to do this, a dancer roller 11 and a dancer limit switch 13 are provided. 7 is a solenoid for driving the cutter blade 9 for cutting the negative film, and 8 is a motor for driving the negative film transport roller 10 for inserting the cut negative film into the negative sheet 16. 12,12'
1 is a guide roller, and 14 is a negative film cut positioning sensor. Further, 17 is a transmission belt, and 20 is a clutch.

The operation of the printer configured in this way will be explained below.

When the developed negative film 4 is inserted from the left side of the figure, the notch detection means 2 detects the negative film 4.
The notch 6 attached to one edge is detected, the image frame 5 on the negative film 4 is stopped at the print gate 15, and the negative image is burned onto the photographic paper by an exposure means as is well known, and printing is performed at the same time. . The image frame 5 that has been simultaneously printed is further sent to the right in the figure, and the next image frame 5 is transferred to the print gate 15, where it is exposed in the same way as before.

Negative film 4 that has been printed and exposed to photographic paper
are sequentially sent to the right in the figure, and the negative film 4 is stored in a loop shape by the dancer section C so that a constant storage amount is obtained. As a result, the negative film 4 reaches the negative film cutting section B while the difference in processing speed between the simultaneous printing process and the negative sheet loading process is absorbed. In the negative film cutting section B, the fed negative film 4 is inserted into the negative sheet 16, and the negative film cut positioning sensor 14 detects that a predetermined length of film (usually 6 image frames) has been fed. When detected, the negative film transport roller 10 is stopped and the negative film cutting cutter blade 9 is activated to cut the negative film. After this cutting, the negative film transport roller 10 further rotates by a certain amount, and the cut negative film is inserted into the negative sheet 16.

Thereafter, the negative sheet 16 is advanced by one line by a driving means (not shown) so that an empty line into which a negative film is to be inserted faces the negative film cutting section B.

As the negative film cut positioning sensor 14, a means for counting the notches attached to one edge of the negative film 4 is used. means for counting the image frames 5 according to their image edges;
Alternatively, a combination of these may be used. Further, if a notch is not detected even after a certain amount of negative film has been sent since the previous cutting, an alarm is generated to prevent negative film insertion trouble from occurring.

Further, regarding the joint portion, the negative film is cut before and after this portion by a separately provided joint portion detection means. Furthermore, if necessary,
Manual cutting operation using a manual cut switch 18 is also possible.

Incidentally, since the printing section of the printer is provided with means for stopping the negative film at a fixed position, this may be used to control the cutting of the negative film.

Further, in the above embodiment, printing from a negative film was explained as an example, but it goes without saying that the object may be a positive image such as a slide.

As explained above, according to the present invention, burning and
Since the cutting of the negative film takes place in both simultaneous printing steps in the printer, there are the following advantages.

(1) There is no need to provide a separate negative film cutting device, and there is no need to provide an operator for this operation. Therefore, it is possible to simplify the configuration of the entire system and save labor.

(2) Since the negative film is cut and inserted into the negative sheet in sequence from the one that has been printed, there is no waiting time.

(3) A winding system for winding up the printed negative film into a roll shape is no longer necessary, and the overall system configuration can be simplified.

(4) Furthermore, conventionally, in addition to the winding system described in (3) above, a step was required to unwind the wound negative film in order to align the printing order and cutting order, but this is unnecessary. This greatly simplifies the process and shortens the shipping time for prints.

(5) Since the negative images are inserted into the negative sheet in the same order as they were printed, the negative images can be inserted into the negative sheet in the same arrangement as in the conventional method. This reduces the occurrence of mistakes in frame designation when reordering.

Furthermore, in addition to the above (1) to (5), since a dancer part is provided between the print gate and the cutter to form a loop of the roll negative, the difference in processing speed between the printing process and the cutting process can be absorbed. The cutting process can be performed smoothly.

Furthermore, since a means is provided to issue an alarm if a notch is not detected after the roll negative has been fed the predetermined length from the previous film cutting, the negative film will not be fed beyond the predetermined length and the negative sheet will not get jammed. transportation troubles can be prevented.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing a printer embodying the present invention. DESCRIPTION OF SYMBOLS 1... Controller, 2... Notch detection means, 4... Negative film, 5... Image, 6... Notch, 9... Cutter blade, 11... Dancer roller, 14... Negative film cutting positioning sensor, 15...Print gate, 16...Negative sheet.

Claims (1)

[Claims] 1. A photographic printing device that sequentially positions each image frame on the print gate when passing a developed roll negative through the print gate, and prints the negative image recorded on the positioned image frame onto photographic paper. a negative film transport roller for transporting the roll negative that has passed through the print gate and inserting it into one row of the negative sheet; a sensor for detecting a notch in the roll negative; and a sensor for detecting a notch in the roll negative; A cutter that first cuts the roll negative that is in the middle of being inserted into the negative sheet when the roll negative has been fed a predetermined length, and a means that issues an alarm if a notch is not detected after the roll negative has been fed the predetermined length since the previous film cutting. , a dancer section that forms a loop of the roll negative between the print gate and the cutter to absorb the processing speed difference between the printing process and the cutting process, and a cut-off sheet-like negative film that moves the negative film transport roller. 1. A photographic printing apparatus comprising means for transporting the negative sheet by one line in a direction perpendicular to the transport direction of the roll negative after passing through the roll negative.