JPH04109757U - photo film cartridge - Google Patents

Abstract

(57) [Summary] [Purpose] To enable printing with at least three different aspect ratios and high-quality panoramic printing. [Structure] The area of one frame of the image exposure area of photographic film is 350 to 1200 ^mm2 , and the aspect ratio of the screen is 1.70 to 1.90. A recording means capable of recording information is provided.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is a photographic film that can provide prints with multiple aspect ratios. Concerning cartridges.

0002

[Conventional technology]

U.S. Pat. No. 4,357,102 discloses a method for printing panoramic prints. . In addition, JP-A-1-282533 has panoramic prints and regular prints. A printer that can efficiently produce is disclosed. However, any publication It is only described that printing of prints with at most two aspect ratios is possible. Furthermore, no specific value of a preferable aspect ratio is indicated.

0003 Current color negative/paper systems have two different screen aspect ratios. prints (panoramic prints with an aspect ratio of 2.85 and panoramic prints with an aspect ratio of 1.48) (regular print) is provided. However, with this system, printing There are only two types of aspect ratios, so the selection range is narrow, and there are only two types of aspect ratios. The disadvantage is that you cannot freely select prints with different aspect ratios within the room. Ta.

0004 On the other hand, attempts are being made to eliminate these drawbacks while maintaining the current negative/paper system. When this happens, there is a problem in that the print production efficiency in the laboratory decreases. Furthermore, there is still room to improve the image quality of panoramic prints, but as mentioned above, It has been difficult to solve these problems with other US patents.

[0005]

[Problem that the idea aims to solve]

The present invention was made in view of such problems, and the present invention has at least three Enables printing of different aspect ratios of species, as well as high-quality panoramic maps. The purpose of the present invention is to provide a photographic film cartridge that allows printing.

[0006]

[Means to solve the problem]

To achieve this objective, the photographic film cartridge according to the present invention comprises a cartridge, a spool rotatably supported around an axis inside the cartridge, and a photographic film wound around the spool in a roll. In the film cartridge, the area of one frame of the image exposure part of the photographic film is formed to be 350 mm ² or more and 1200 mm ² or less, the aspect ratio of the screen of the photographic film is set to 1.70 or more and 1.90 or less, and the photographic film or At least one of the photographic film cartridges is characterized in that it has a recording means capable of recording at least three pieces of information regarding the aspect ratio of the photographic image.

[0007] Considering that prints with a high aspect ratio require a high enlargement magnification, in order to maintain the image quality of the print, the area of one frame of the image exposure section needs to be 350 mm ² or more. However, if the area becomes 1200 mm ² or more, the camera becomes large, so the area of one frame of the image exposure section is set to 350 mm ² or more and 1200 mm ² . Among these, a particularly preferable range is 400 mm ² or more and 900 mm ² or less.

[0008] As a result of various investigations, the applicant has found prints with the following three aspect ratios: We found that if we could provide the did. What are the three types of aspect ratios? (1) Low aspect ratio 1.40 to 1.60 (2) Medium aspect ratio 1.70-1.90 (3) High aspect ratio 2.00-3.00 Needless to say, the types of prints may be further increased.

[0009] If you match the aspect ratio of the negative screen to a print with a medium aspect ratio, the conventional product Lower the enlargement magnification for panoramic prints (high aspect ratio prints) compared to Since the image quality of prints can be improved by The aspect ratio of the room screen is set to 1.70 to 1.90. Set the aspect ratio to a value close to the HDTV aspect ratio (1.78). A hybrid of a silver halide photography system and an electronic imaging system. This is preferable because it allows for smooth transition. Preferred medium aspect ratio The value is 1.75-1.85.

0010 As a means of recording information regarding the aspect ratio of the screen specified at the time of shooting, , optical means using the photosensitivity of photographic film, photographic film or cartridge magnetic means using a magnetic recording layer provided on the cartridge, or magnetic means using a magnetic recording layer provided on the cartridge. It is preferable to use an electric means using a semiconductor element. The optical information recording section that records information using optical means is the photographic frame of the image exposure section. It is preferable to form it on the outside in the width direction of the film. This is the phase of adjacent image exposures. By forming an optical information recording section between each other, the total length of the photographic film increases and the camera This is because it is disadvantageous to making the device thinner. Also, the optical information between the perforations is Once the information record section is formed, inputting and reading information into the section is very complicated. This is because a camera mechanism is required. For this reason, between image exposure areas or It is preferable to form it outside the image exposure area, not between the perforations. stomach.

[0011] The number of perforations has been reduced to secure the area for optical information recording. It is preferable to Normally, perforations are used to transport the film. However, we adopted another film transport mechanism that does not use perforations. Perforations used only for positioning in cameras and printers If left in, the number of perforations can be reduced. Preferred perforet The number of applications is 4 or less per screen, and a particularly preferable number is 2 per screen. less than or equal to

0012 Please note that information input by optical means may disappear due to so-called "optical fog". In order to prevent this, the cartridge should be a light-tight type (for example, 253) is preferred. As magnetic storage means, US Pat. No. 4,302,523, US Pat. No. 3,782,947, A transparent magnetic base disclosed in Japanese Patent No. 4,279,945 is preferred. The magnetic recording layer is an image It may be formed in a stripe shape on the outside in the width direction of the photographic film in the exposed area, or It may also be formed on the cartridge itself.

[0013] The semiconductor element used as the electrical storage means is preferably an EEPROM or the like. Means for recording information regarding aspect ratio include the above-mentioned optical means and magnetic means. Only one or more of physical or electrical means may be used. It is also possible to use a combination of at least two.

[0014]

【Example】

An embodiment of a photographic film cartridge according to the present invention is shown in FIG. cartridge The cartridge 20 is connected to a cartridge body 21 at one end and is connected to the cartridge body 21 at one end. a flexible wall 22 that is rotatably supported inside the cartridge body 21; A spool 23 is provided. The flexible wall portion 22 has a mechanism at both ends that engages with a mechanism on the camera side. A pair of protrusions 24a and 24b are formed. Photographic film 25 is spool 2 3 is housed inside the cartridge body 21 in a tightly wound roll shape. The photographic film cartridge 20 as a whole is of a light-tight type. Na In this example, the photographic film 25 is 00'' was used.

[0015] This photographic film cartridge 20 operates as follows. When the cartridge 20 is loaded into the camera, a mechanism (not shown) on the camera side will protrude. 24a, 24b, and pushes up the protrusions 24a, 24b. cartridge 20 is fixedly loaded inside the camera, so the protrusions 24a and 24b are not pushed up. As a result, the flexible wall portion 22 bends upward as shown in FIG. A drawer opening 26 is formed. After this, move the spool 23 in the opposite direction to the film winding direction. By rotating the photographic film in the direction (i.e., counterclockwise in Figure 1) 25 is tightly wound around the spool 23, so the photographic film 25 is The film is sent out from the outlet 26 and guided to a predetermined film exposure position within the camera.

[0016] FIG. 2 shows the photographic film 25 pulled out from the cartridge 20 shown in FIG. shows. The photographic film 25 includes a plurality of image exposure sections 30 arranged in the length direction, an optical a section 31 for inputting information, and a section 31 for positioning the frames of the photographic film 25. It has a second perforation 32. The part 31 that optically inputs information is a photograph. This is the part where information is recorded using the photosensitivity of the film 25.

[0017] Load the above-mentioned photographic film cartridge 20 into a camera that has been modified as shown below. A test was conducted to confirm the effectiveness of the photographic film cartridge 20. (1) Change the screen aspect ratio to 1.79 (screen size is 36mm x 2 0mm). (2) Two LEDs (light emitting diode) outside the screen. (3) Set the camera so that the photographic film cartridge 20 shown in Figure 1 can be loaded. Modify the cartridge chamber. (4) Screens with aspect ratios of 1.46, 1.79 and 2.85 in the finder Insert the corresponding line.

[0018] These three aspect ratios correspond to the input number of LEDs as follows, and the LED Prints with three different aspect ratios were printed according to the input signals. (Number of LEDs) (Aspect ratio) 0 1.46 1 1.79 2 2.85 The width of the print is 89mm, and the print length can be changed to Adjusted aspect ratio.

[0019] This test efficiently produced high-quality prints with three different aspect ratios. I was able to confirm that Note that in this example, the aspect ratio specified by the photographer is Create a negative image with an aspect ratio of 1.79, and then change the aspect ratio when reprinting. Made it possible to change.

[0020]

[Effect of the idea]

The photographic film cartridge according to the present invention can be used in at least three different ways. You can obtain prints with the same aspect ratio, and even improve the image quality of panoramic prints. It becomes possible to achieve high image quality.

[Brief explanation of drawings]

FIG. 1 is a perspective view of an embodiment of a photographic film cartridge according to the present invention.

FIG. 2 is a schematic diagram showing a state in which photographic film is pulled out from the photographic film cartridge shown in FIG. 1;

[Explanation of symbols]

20 Photographic film cartridge 21 Cartridge body 22 Flexible wall part 23 Spool 25 Photographic film 26 Film drawer 30 Image exposure section 31 Optical information recording part 32 Perforation

Claims (1)

[Scope of utility model registration request] 1. A photographic film cartridge comprising a cartridge, a spool rotatably supported around an axis inside the cartridge, and a photographic film wound in a roll around the spool, wherein an image exposure section of the photographic film is provided. The area of 1 frame is 350mm ² or more and 1200m
m ² or less, and the aspect ratio of the screen of the photographic film is set to 1.70 or more and 1.90 or less, and at least one of the photographic film or the photographic film cartridge has at least one aspect ratio related to the aspect ratio of the photographing screen. A photographic film cartridge characterized by having a recording means capable of recording three types of information.