JP2509469Y2 - Film detection device for negative mask of automatic photoprinting machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an apparatus for detecting information on a film in a negative mask of an automatic photoprinting machine, and more specifically, a film including a light source unit and a sensor in the negative mask. The present invention relates to improvement of a detection device.

(Prior Art) A film detecting device in a negative mask of an automatic photoprinting machine is a device for detecting a screen for frame-advancing a negative film fed in a process of printing so as to accurately match each screen to the edge of the negative mask. And a device that detects information (DX code) such as the film maker and sensitivity written on the side edge (outside the screen) of the negative film. The screen detection device detects the adjacent edge of each screen (frame). Based on this, the negative film is automatically fed one by one so that it exactly matches the negative mask edge of the printing part, and the information (DX code) detection device combines the detected data and other information such as paper. To set appropriate print conditions.

The film detection device in the conventional negative mask has a unique light source (halogen lamp) for each of the screen (frame) detection sensor and the information (DX code) detection sensor,
It was configured to detect the light rays from each light source that directly penetrated the screen (frame edge) and information (DX code) of the film by each sensor and detect it.

(Problems to be solved by the invention) As described above, the film detection device in the negative mask of the conventional automatic photo-printing machine uses each detection sensor and information (DX
Since each sensor has its own light source, the space occupied by the light source of the film detection device increases and the negative mask itself becomes bulky and difficult to handle, and the cost of the negative mask increases due to the installation of multiple light sources. Was invited. Furthermore, by increasing the power consumption, the large amount of heat generated due to this will adversely affect the film and the quality accuracy in the printing process.
As a result of the increase in the scale of the cooling device for suppressing this temperature rise, the cost and bulkiness of the automatic photographic printing machine itself have been forced.

The present invention has been made for the purpose of solving the problems of high cost and bulkiness of a negative mask provided with these conventional film detecting devices.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention provides a film detecting device in a negative mask equipped to detect each information on a developed film, in a film detecting device in a negative mask. By providing a reflecting mirror for a single light source provided, a plurality of sensors provided for detecting each information by reflecting light rays from the light source in a multi-faced manner respectively receive and detect light. To provide a film detecting device for a negative mask of an automatic photoprinting machine.

The film conveys and runs between the light source and the sensor of this film detection device, and each sensor is opposed by transmitting the information part (screen, film maker, sensitivity, etc.) on the film with the dispersion refraction light source by the reflection mirror from the light source. Each of them receives light and reads it, and based on each information obtained, the negative film is fed frame by film with the negative mask set in the automatic printing machine and the printing process is automatically performed by setting the printing conditions. It is something to do.

(Function) In a negative mask equipped with a film detection device, a light source from a single light source is refracted in multiple directions by using a reflection mirror to be dispersed in a plurality of different directions with different angles or diverted into a plurality of directions. Each of the light rays that are radiated and refracted and radiated is transmitted through a plurality of data existing at different positions on the film, and each data is received by a plurality of sensors provided at each radiation position and functioning respectively. , And based on this, it works to control the film transport section and exposure section of the negative mask in the automatic printing machine.

(Embodiment) Next, an embodiment of the film detection device in the negative mask of the automatic photoprinting machine according to the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view of a photographic automatic printing machine loaded with a negative mask for implementing the present invention, FIG. 2 is a perspective view of a negative mask separated from the same printing machine, and FIG. 3 is a vertical side view of the same negative mask. FIG. 4 is a perspective view showing a film detection device main part of the negative mask by cutting out a part thereof, FIG. 5 is a plan view showing an information part of the negative film, and in FIGS.
(1) is a baking processor, (2) is a negative mask of the baking part,
The negative mask (2) is equipped with a pair of upper and lower feed rollers (8) (8) at intervals in the length direction so that the negative film (9) horizontally feeds the lower side of the negative mask edge (2a). A negative detector (3) is provided in front of the edge (2a). The negative detector (3) is provided with a single light source (4) consisting of a halogen lamp below the path of the negative film (9), and above the negative film (9) the DX code (10) on the negative film (9).
And two sensors (5) to detect the screen (11)
(6) are arranged horizontally, and each reflection mirror (7) is provided between the light source (4) and each sensor (5) (6).
(7 ') to refract light rays (4a) and (4a) from the single light source (4) respectively to each sensor (5)
The light is received by (6), and the negative film (9) conveys and sends between the single light source (4) and the respective sensors (5) and (6), and each screen (specified by the negative film (9) ( The edge portion (11a) of 11) is refracted by the reflection mirror (7 ') and is sequentially transmitted by the light beam (4a) from the light source (4), and the sensor (6)
Each screen (11) to be detected and specified by the negative mask edge (2a)
The frame feeding device (12) of the negative mask is operated so as to match the above condition, and the negative film (9) is sequentially frame-fed. Also, the light beam (4a) from the light source (4) refracted by the reflection mirror (7)
Read through the sensor (5) through the DX code (10) such as the film maker and sensitivity written on the side edge of the negative film (9), and combine this read data with other information such as paper. By setting the obtained appropriate printing conditions, a well-balanced photographic print is automatically printed.

The film detection apparatus of the present invention can be applied to the negative film negative mask described above and also to the positive film mask provided in the direct printing processing machine.

The sensor in the negative detector (3) is also a DX code,
In addition to screen detection, it is possible to automatically operate by installing multiple sensors that detect various information (sorting information, etc.) specially set on the film.

(Effect of the Invention) As described above, the present invention uses a single light source and a reflection mirror for the light beam from the light source in the film detection device including the light source and the sensor in the negative mask loaded in the automatic photoprinting machine as described above. By refracting and dispersing in a polygonal way, and featuring a configuration that allows each of the multiple sensors that are provided in opposition to this reflected light to detect light, and share a single light source with multiple sensors, Since the space occupied by the light source can be minimized and the negative mask can be made small and bulky, the negative mask in the automatic printing machine is easy to handle, and the negative mask that can be loaded is low in volume, so various negative masks can be stored. It is convenient for the above, and because the cost of the light source can be reduced, the cost of the negative mask can be reduced and various negatives can be There is an effect that a mask can be prepared.

Moreover, the amount of heat generated from the light source in the detection unit of the negative mask can be minimized by using a single light source, and it is possible to avoid adversely affecting the film and the image quality accuracy at the time of printing due to temperature rise. Since it is possible to reduce the size of the cooling device installed in the printing machine itself, the photo-automatic printing machine can be downsized and the cost can be reduced by the synergistic effect, and the power consumption can be saved. Also has the effect of contributing.

[Brief description of drawings]

FIG. 1 is a perspective view of an automatic photographic printing machine loaded with a negative mask equipped with a film detecting device for carrying out the present invention, FIG. 2 is a perspective view of the negative mask separated from the same printing machine, and FIG. Same as above, which is a vertical sectional side view of the negative mask, FIG. 4 is a perspective view showing a part of the film detecting device of the same negative mask with a part thereof cut away, and FIG. 5 is a plan view showing an information portion of the negative film. In the figure, (1) is a printing machine, (2) is a negative mask,
(3) is a negative detector, (4) is a light source, (4a) is a light beam,
(5) and (6) are sensors, (7) and (7 ') are reflection mirrors, (9) is negative film, (10) is DX code, and (11).
Indicates the screen.

Claims (3)

(57) [Scope of utility model registration request] 1. A film detecting apparatus in which a negative mask mounted on an automatic photographic printing machine is provided with respective sensors for detecting a plurality of pieces of information on the film, and a light beam from a single light source is passed through a reflecting mirror. The film detection device in the negative mask of the automatic photographic printing machine, in which a plurality of sensors that detect the respective information by receiving light rays in multiple directions are provided by being provided. 2. The negative mask of the photographic automatic printing machine according to claim 1, wherein said film detecting section comprises two sensors for detecting a screen on the film and information (DX code). Film detector. 3. A film detecting device in a negative mask of a photographic automatic printing machine according to claim 1 or 2, wherein said reflecting mirror is provided so as to intervene in all sensors to receive light.