JPS6144204Y2 - - Google Patents

Description

[Detailed explanation of the invention] This invention is based on the following when printing a photograph on roll photographic paper.
At the same time, the present invention relates to a device for printing various marks on the margins outside the margins.

After printing, developing, and drying a roll of photographic paper, each photograph must be cut out one by one. In order to do this automatically, it is known to imprint a mark in advance at the same time as printing the photograph. It is also known to imprint a sorting mark along with the above-mentioned cuts in order to automatically sort them by customer. Furthermore, some printing companies
The date of printing, the name of the photographic paper, and the name of the vendor may also be imprinted.

When printing these kinds of marks, a mask for various marks is placed close to the surface of the photographic paper, and the photographic paper is exposed by shining light from behind it. Conventionally, this exposure lamp is used to expose the paper. The common practice was to turn on the lights only for certain hours.

In recent years, high-speed automation of photographic printing machines has been promoted, and the exposure time for printing per sheet has become shorter. Furthermore, the photographic paper is automatically fed in response to this printing exposure end signal. Furthermore, the exposure time for printing varies depending on the condition of the negative film. Therefore, it has become necessary to make the exposure time for mark burning as described above even shorter than the shortest exposure time for photographic printing. However, with the above-mentioned mark burning apparatus, it is difficult to cope with such an increase in the speed of the printing machine. This is because the rise and fall times for turning on and off the lamp are long. In particular, if the photographic paper is fed during this falling time, the imprinted marks will leave a trail, which not only reduces the product value but also sometimes affects the photographic printing surface (frame). or make the mark difficult to detect.

To solve this problem, a device has been proposed in which the light source lamp for marking marks is always lit, a shutter is interposed between the lamp and the mask, and marks are burned by opening and closing the shutter. There is. However, there is no problem with this device if there is only one mark to be burned, but if there are multiple marks and the combination of marks to be burned differs from time to time, shutters must be provided for each mark. The disadvantage is that it does not.

The present invention was devised to improve these points, and is a mark imprinting device for a photoprinting machine that is capable of selectively imprinting multiple marks simply by using a single shutter mechanism. I will provide a.

Embodiments of the present invention will be explained with reference to the drawings. 1 is a driving source such as a stepping motor that provides reciprocating rotation to the rotating output shaft 1a; 2 is an aperture 2a, 2b,
2c, an aperture plate integrated with the shaft 1a by a stopper 2d in the center; 3 and 4 are light source lamps; 5 is photographic paper; 6 is a cut mark for cutting; 7
is a sort mark indicating that the customer changes from there,
8 is a mask for cut marks, 9 is a mask for sort marks, and 10 and 11 are photoconductors each having one end facing the light sources 3 and 4 with the aperture plate 2 in between, and the other end facing the masks 8 and 9. It is the body.

Next, its operation will be explained. FIG. 2 shows the aperture plate 2 in its rest position. If it is desired to burn the cut mark 6 and sort mark 7 in this state, the aperture plate 2 is moved slightly clockwise by the drive source 1. As a result, the apertures 2a and 2c occupy positions opposite to the positions of the light source lamps 3 and 4, which are always lit, respectively,
The light from those lamps passes through photoconductors 10 and 11
, the photographic paper 5 is exposed to light through masks 8 and 9 to imprint marks 6 and 7 . Thereafter, the aperture plate 2 is rotated counterclockwise and returned to the position shown in FIG.

If only the cut mark 6 is desired to be burned, the drive source 1 rotates the aperture plate 2 counterclockwise. This causes the aperture 2b to face the light source lamp 3 and burn the cut mark 6, after which the aperture plate 2 returns to the position shown in FIG.

A cut mark is required for each frame of the photo, so please include the date of printing and brand mark.
If it is desired to burn different masks at the same time, the photoconductor 10 may be branched, or another photoconductor may be bundled with the photoconductor 10 to face the light source lamp 3.

In the above embodiment, the aperture plate 2 is provided with three apertures in order to shorten the mark burning time as much as possible, obtain stable performance, and manufacture at a low cost. That is, in order to shorten the mark burn-in time, it is desirable to make the operating angle of the aperture plate 2 as small as possible. In FIG. 2, the simplest embodiment is one in which the light source lamp 4 is placed in a symmetrical position with the light source lamp 3 with the aperture 2b in between, and the aperture 2c is omitted.
However, when doing so, the distance between the photoconductors 10 and 11 facing them becomes narrower, and when marking only one mark, the light from the light source is picked up by the other photoconductor. There is a possibility that it will be stored away. There are various ways to prevent this, but even taking such measures will increase costs. Therefore, if there is no need for such consideration for some reason, or if the second
If the position of the light source lamp 3 and the position of the aperture 2a can be separated in the illustrated state, the aperture 2c can be omitted as described above. Such a device with two apertures is also included within the scope of the present invention.

In addition, in the above embodiment, two light source lamps were used, but it is also possible to use one lamp in common.Furthermore, although the aperture plate is shown as a disc that rotates back and forth, it can be used by well-known means. It is also possible to convert the rotation of the shaft 1a into a rectilinear motion and cause the rectangular aperture plate to reciprocate in a rectilinear direction in the longitudinal direction, and both of these embodiments are included in the present invention.

As described above, according to the present invention, a plurality of marks can be selectively and quickly placed on photographic paper by reciprocating one aperture plate from a stationary position in opposite directions. Since it can be hardened and stable performance can be obtained at low manufacturing cost, the practical effect is extremely large.

[Brief explanation of the drawing]

Figure 1 is an explanatory diagram of an embodiment of the present invention, and Figures 2 to 4 are
The figure is an explanatory diagram showing each operating position of the aperture plate 2 in FIG. 1. 2...Aperture plate, 2a, 2b, 2c...
Aperture, 3, 4... lamp, 8, 9... mask, 10, 11... photoconductor.

Claims (1)

[Claims for Utility Model Registration] (1) 1 in each opposite direction from a stationary position by a driving source
An aperture plate that reciprocates by a step is provided, the aperture plate is sandwiched at a constant interval, a light source is disposed on one side, and one end of at least two photoconductors is placed on the other side at a constant distance from each other. spaced apart, the aperture plate having at least one aperture between the two photoconductors in its rest position and one aperture outside either of the two photoconductors; . A mark imprinting device in a photographic printing machine, wherein the other end of the photoconductor is disposed so as to face a mask for each mark disposed close to a predetermined position on a photographic paper surface. (2) that said aperture plate, in its rest position, is provided with two apertures between said two photoconductors and one aperture outside either of said two photoconductors; A mark imprinting device for a photoprinting machine as set forth in claim (1) of the utility model registration characterized by: (3) The mark imprinting device for a photographic printer according to claim (1), wherein the aperture plate is disc-shaped.