JPS5849931A - Photographic printer - Google Patents

Abstract

PURPOSE:To print a picture to the same roll photographic paper in an approximately equal picture size, by detecting discrimination signals for full-sized and half-sized negative film picture parts, and converting the magnfication of enlargement of the focused picture. CONSTITUTION:The picture size discrimination signal for a long-sized film 10 is detected by a picture size detector 14; and if this signal is different from the preceding detected picture size signal, a triadic mirror rotary material 31 is rotated at 45 deg. around the optical axis, and the switching of a movable mirror 27, the alternate switching between lighting circuits for light source lamps 16A and 16B, the size conversion of a negative mask 23, the zoom type switching of a focusing lens 25B, and the switching of the sensitivity of an exposure controlling system after a photodetector 21 are performed. Thus, full-sized and half- sized pictures are printed to the same roll photographic paper in an approximately equal picture size continuously.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for enlarging and printing a negative film onto a roll of photographic paper. Device KrI4.

IJJ type negative film is shot in full size (14 mm x 14 mm) and half size (7 mm x 14 mm) except in special cases.Full size screen is a rectangle with a long side along the longitudinal direction of the film, and a half-size screen is a rectangle with a short side along the longitudinal direction of the film.
iii Negative lI with different shape directions! ii) When printing an image on a roll of photographic paper of a predetermined width, the same photographic printing device must be used unless some measure is taken to ensure that the direction of the full-size screen shape matches the direction of the half-size screen shape. Therefore, it is impossible to print efficiently by utilizing the tV effect on the printing paper surface from both sides to approximately the same size.

Previously, at the current gl office, negative film k after the current salary was completed.
R separated, full size 1i 11 side negative film only [
There are two types: a long film that has been bonded, a long film that has only the half-size negative film T-bonded, and a long film that has not been bonded.
Full size - 1 printing device exclusively for images and half size l1
Each of the seven photos was printed using II's exclusive photo printing device. 4 True Film T - While we are using the hanger type visual imaging method of developing the film without splicing, it may be possible to do it without any inconvenience with this method. It would be extremely inconvenient if a cinema-type developing method was adopted. Because, m
It is not only easy to make a mistake at the time of reception at a store, but even the customer may not be able to distinguish between those taken with a full-size screen and those taken with a half-size 1IIthI photographic film. In reality, it is possible to predict situations that are close to impossible. Therefore, when used in combination with the cinema-type developing method conventionally used in our studios, the developed negative film that is bonded is peeled off and these full-size GL+II negative films are combined or separated. -7 Size J It is necessary to sort and sort one side of negative film and re-splice it, which makes it extremely difficult to collect multiple works.

Negative g with different sizes and ii direction of one-sided shape
If you want to print on a roll of photographic paper that is about as wide as it needs to be, you can buy some kind of hand RIC--the full-size l1li1-sided shape direction and 7
・-Unless you change the enlargement magnification, you can use the same photo printing device to make the photographic paper surface from both sides approximately the same size, and use it effectively. If the burn-in cannot be achieved efficiently, it becomes difficult.

γ The purpose of the present invention is to solve the problems of the prior art mentioned above.
None, 7-size screen negative film and -7 size Ii 1 side negative film are spliced together without separating them, and Takaaki Motomoto is able to produce full-size and half-size images. K. In a photographic printing apparatus that enlarges and prints from negative film onto roll photographic paper, a negative film with a full-size screen t-N and a negative film with a half-size screen t-V [the full-size screen portion of a series of continuous films] and a signal capable of discriminating between the half-size screen portion and the half-size screen portion; This is a photographic printing apparatus characterized by having an optical system capable of changing the magnification of a formed image by detecting a signal r.

Next, cases in which the present invention is put to practical use will be explained.

Full-size screen negative film and half-size 1
Bonding of negative films having an m-plane is carried out after development if a hanger type development method is employed, but it is carried out before development if a cine-type development method is employed. The significance of the present invention is that it can be bonded before development.

The joining method can be carried out by a known method such as directly adhering the films to each other using a pressure adhesive tape or a thermal adhesive tape, an adhesive, or hot melting. It is preferable to use a thermal adhesive tape, both from the viewpoint of not peeling off during development and from the viewpoint of workability.

[
Mycelium can be used as a part of the film itself or a bonding tape [as a storage means, and can be used as a notch or mark to serve as a discrimination signal, or can be perforated or marked on another storage means such as paper tape or magnetic tape. , or by applying a magnetic signal. Since it is extremely rare for screens of different sizes to coexist within the same negative film, the discrimination signal is required only for full-size films.
This is where a nine negative film with t and a negative film with half size mmt are adjacent to each other. It is preferable to apply the discrimination signal to the film itself near the frame where the screen size changes.Of course, it is also possible to apply the discrimination signal to each individual negative film, or even to each individual image frame. Discrimination i*'kj1! into another storage means such as paper tape or magnetic tape! - When applying, do so while transporting them in synchronization with the film transport. These storage means may also be used in conjunction with 10 used for injecting image quality correction information etc. to image frames.To detect the applied discrimination signal, the following detection is performed depending on the type of signal application. It is necessary to do it by means. That is, in the case of a notch or perforation, a microswitch or a photoelectric detector is used, a photoelectric detector is used for marking, and a magnetic head is used in the case of a magnetic signal.

Negative film traveling direction and roll photographic paper traveling direction [optical axis rotation] It would be better if it had a structure that can be rotated about 9 degrees around the axis.In order to make the transport system rotatable, it is preferable that the system be lightweight and small.From this point of view, the negative film transport system t-1i- Zero-rotation drive, which is better suited to a rotary structure, can be done quickly and accurately using electrical signals.
Known means can be used. In addition, when using an optical system that can perform OR conversion around the optical axis of the image formed image, which is used as a substitute for the rotation of the transport system described above, known means can be used. It depends on how you use it. For example, a combination of a mirror that reflects off the optical axis from the optical axis η island, a mirror that reflects the reflected light tp4 in the optical axis direction, and a mirror that returns this reflected light and reflects it in the direction that coincides with the initial optical axis. Rotate the three-piece mirror around the optical axis! When I rotate it a degree, I turn around the optical axis and rotate vertically. The method used for this three-disc mirror is always to turn it upside down, so loading the negative film is also done by flipping it over, unlike the conventional method.

Alternatively, instead of this three-piece mirror, a trapezoidal roof prism known by KA may be used, and this method also works equivalently to the method using the three-piece mirror described above.

Optical systems that can change the magnification of the resulting image include lenses that can change the magnification to the appropriate magnification (turret type conversion, attach lenses (conversion by attaching and detaching), and zoom lenses). etc. [Available]

From the viewpoint of image quality, a turret type or zoom lens is preferable, and from the viewpoint of ease of conversion, an attach lens KL is preferable.

Exposure time changes significantly when magnification is changed.
A method that can convert the light intensity of the printing light into two stages for correction.
When Rt is provided, printing from a half-size image can be obtained with the same exposure time as printing from a full-size INI*, thus improving efficiency.

As means for converting the light intensity of the printing light into two stages, there may be adopted means for switching the light source lamp, means for moving a neutral density filter in and out of the printing optical path, and means for moving an aperture in and out of the printing optical path, or for opening and closing the aperture. .

Also, since the size of the negative layer differs, the amount of light incident on the photodetector for controlling the exposure amount also changes.
Photodetector position [KL so that it can be switched? By making it possible to change the slope control circuit and the sensitivity of the exposure control system, the degree of exposure can be brought to an optimum state. And, of course,
If a negative mask that can perform size conversion between a full-size screen and a half-size screen is used, the area other than the 1 m plane can be reliably covered, making it possible to easily adjust the exposure amount.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below by illustrating main parts of embodiments of a long film L and 1 printing apparatus for carrying out the present invention.

Diagram 1 is a full-size negative film of El/l-N and a half-size negative film of 1iJk, which are joined together using T splicing tape Jl/C, with one notch far e't-
Nine examples are shown as a screen size determination signal. Notsuchi 4.
7 is iii1gI! It may also be used for piece position detection.

Iris drawing Fi joining tape! mark r1 (add lTi1)
An example of a surface size discrimination signal [shown]. Marks indicating different screen sizes since? Negative films of the same screen size are spliced together until they form a mass.

Diagram J shows an example of a photographic printing apparatus in which the present invention is implemented using a conveyance system that can change the direction of travel of a negative film by 9 degrees around the optical axis with respect to the direction of travel of a roll of photographic paper. Its configuration consists of a film feed reel //, a film guide roller lλ, /J, a film take-up reel lJ%i & surface size detector /4C7, a rotating head with a try printing light source U/
Bu/4. Pre-filter for dimming/7. A mirror box 117) is provided around the light source system to serve as an irradiation system for the long film 10, and a photographic paper delivery reel/?
, printing paper guide roller λQ, λ01 photographic paper take-up reel J
/KJI and the optical path KFi to the photographic paper λ4 sent to the opening of the printing paper mask here, the size variable negative mask J,
An imaging irradiation system consisting of a photodetector, a turret-type magnification nozzle, and a variable aperture nozzle is provided. The photographic printing apparatus constructed as described above prints 4 prints of the long film ρ island and A-ru stamp paper as shown in Figure IC1 as follows.

Film feed reel//' When detecting a screen size signal that is different from the first screen size signal detected, the rotary head l! rotates 2Of around the optical axis, and the pre-filter 17 moves in and out, and the negative mask 3
The size conversion of the imaging lens λj is performed using a turret type, and the sensitivity of the exposure amount and subsequent photodetectors is changed.

The figure shows an example of a photographic printing apparatus which implements the present invention using an optical system capable of converting the formed image around the optical axis without changing the direction of travel of the negative film and the roll of photographic paper. The optical system includes light source lamps l≦A, //; B having different light intensities, a movable mirror core that switches the optical path from these light sources, and a Z light box IRP. Photographic paper feed reel, photographic paper guide roller
The image-forming irradiation system for the photographic paper -≦ sent to the opening of the sufucoco consists of a negative mask 23 whose size is variable, a photodetector λda that detects the information of the negative jigl, and an imaging lens whose magnification is variable with a zoom type. λsB, and a negative optical image of the first mirror on the optical axis but off the optical axis [Reflecting first mirror r and a negative inverse image t of the first mirror 22η on the optical axis - again in the direction that coincides with the optical axis It consists of a rotating body Ji of three mirrors including a first reflecting mirror 30. Then, the screen size determination signal tii111 for the next long film 1otlc is sequentially transferred from the film exit reel ll to the film guide roller lco, lco, and film take-up reel 13 as shown in Figures I1 and 4. When the detector lhiro detects the screen size signal j1 that is different from the previously detected screen size signal
When surface size signal cage is detected, three-piece mirror surrounding body J/
is rotated by aS degrees around the optical axis, switching of the movable mirror core, alternating switching of the lighting circuits of the light source lamps 1A and 1≦B, size conversion of the negative mask λJ, and imaging lens control jB.
The zoom type switching and the sensitivity switching of the exposure amount control system after the photodetector-7 are performed.

The combinations of the elements in the configuration of each device illustrated in FIG. 1 and FIG. μ are not limited to these, but are as described above. ? l! The elements can be selected and combined as appropriate.

As described above, since the present invention is a single photographic printing device, the enlargement magnification of the same printing device can be adjusted by combining the negative film of the full-size side and the negative film of the perfect-sized tooth side at random without separating them by Km. It is possible to automate the conversion and printing of full-size and half-size images on a series of rolls of photographic paper continuously as substantially the same screen size, which is an extremely practical effect.

[Brief explanation of the drawing]

Fig. 1 is a top view illustrating a long film to which the negative film itself has been subjected to a VCiii1 side size discrimination signal t; Fig. 1 is a plan view illustrating a long film to which a bonding tape Kmlii size discrimination signal has been applied; 1 is an example of a photographic printing apparatus for carrying out the present invention [a front view of the main part shown in a partial vertical cross-sectional view; FIG. FIG. /...Full size l1i 1 screen, 3...Half size screen, J, IC...Negative film,! ...Joining tape, 4.7...notsuchi,! , de...mark, lj.
...Rotating head, KojA, Ko! B...Magnification conversion imaging lens, J/...3-mirror rotating body. Patent applicant: Fuji Photo Film Co., Ltd. Figure 1 Figure 2 Figure 3 Figures 1 and 4

Claims (1)

[Scope of Claims] In a photographic printing apparatus for enlarging printing from a negative film to a roll of photographic paper, the full-size screen portion of a long film in which a negative film with a full-size screen tV and a negative film with a half-size screen kV are joined in series. and a detection means for detecting a discrimination signal applied to a part of the negative film, a joint, or another storage means, and a signal capable of discriminating between the half-size screen portion and the half-size screen portion; An optical system that can convert the magnification of the crystal surface to 1 by detecting the discrimination signal [
A photographic printing device having a t% characteristic.