JPS6223299B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for making copies of transparent originals such as X-ray films, preparations, and slide films by placing an arrow,
This relates to a method of imprinting color marks such as circles.

When making a copy of a given original, there is no technical difficulty in imprinting a color mark at any desired position if the original is a reflective original such as a print. This is because it is sufficient to place or paste any color mark on any position on the document and take a photograph as it is.

Further, even if the document is of a transmissive type such as a slide film, it is easy to imprint a black mark or a white mark. Because,
If you want to imprint a black mark, you can overlay the black mark on the original, or you can overlay a positive type mask with only the mark part black on the original and take a photo. This is because if you want to include the original, you can first photograph the original as it is, and then double photograph only the negative type mask with only the marked portions outlined in white.

However, when making a copy of a transmissive original, it is not easy to imprint color marks such as red or border color. Conventionally, a positive type mask in which only the mark part is black, a negative type mask in which only the mark part is white, and the desired color filter are used, and the procedure shown in Figures 1 to 3 is used. It was carried out at the same time. That is, first, as shown in FIG. 1, a positive type mask 1 in which only the mark 1a is black is superimposed on a transmissive original O, and then a photo is taken as shown in FIG. Place a negative type mask 2 on which only the mark 2a is white except for the original O, and then overlay the color filter 3 of the desired color on the mark 2a of the mask 2 and copy it onto the same photosensitive surface as before. It's complicated. If the double-exposed film is developed in this way, if the film is a reversal film, it will contain an image identical to the image of the original O, as shown in FIG. Then, the mark 4, which is the same as the marks 1a and 2a of the masks 1 and 2, appears in the same color as the color filter 3.

However, according to such a conventional color mark imprinting method, it is necessary to align the positive type mask and the negative type mask so that the marks on both masks match accurately. If the marks at both ends do not match, the edges of the imprinted mark will be uneven or darkened, and when this is enlarged and projected, the outline will become extremely unclear and unsightly.

Conventionally, a method using register pins has been used to align the positive type and negative type masks, and a method has also been used to simultaneously synthesize two images using a half mirror. As shown in FIGS. 1 and 2, the method using register pins involves punching holes 1b and 2b in the same positions in a positive type mask 1 and a negative type mask 2, respectively, using a register punch, and This is to prevent misalignment by passing register pins through the holes. However, the register pins and the holes 1b and 2 of the mask
A register punch for punching b requires a high degree of processing precision and becomes quite expensive. In addition, even if the machining accuracy of register pins and mask holes is made to be precise, shrinkage of the support will occur when forming the mask plate, so it is impossible to completely prevent the marks on the two mask plates from misaligning. It is not possible. Moreover, it is troublesome to put on and take off the positive type mask and the negative type mask alternately.

The method of combining two images simultaneously using a half mirror is as shown in Fig. 4, by combining the original O with a positive type mask 1, a negative type mask 2, and a color filter of the desired color. 3 is placed in a conjugate position with respect to the half mirror 7, and each polymer is illuminated from behind by light sources 5 and 6, and an image where the original O is not visible and an image where the mask 2 is not visible are obtained. are combined by a half mirror 7 and projected onto a film 9 via an imaging lens 8. By this method, when color marks are imprinted, alignment is performed in advance so that the marks on the positive type mask and the marks on the negative type mask match. That is, a focusing glass is placed at the position where the film 9 is to be placed, and while observing the mark image on the focusing glass with a magnifying glass, adjustment is made so that the two marks coincide. However, even in this case, it was not possible to avoid the influence of the syringe that occurs when forming the mask plate, and it was impossible to completely eliminate the misalignment between the marks of the positive type mask and the negative type mask. Furthermore, matching the positions of the two masks in the XY axis directions through the half mirror requires a high degree of precision, which has the disadvantage of being quite expensive.

An object of the present invention is to imprint sharp color marks without any deviation or shading in the color marks 7 when duplicating a transmissive original and simultaneously imprinting arbitrary color marks at arbitrary positions. An object of the present invention is to provide a method for imprinting color marks.

Another object of the present invention is to provide a color mark imprinting method that is easy to operate and inexpensive.

The present invention will be explained below with reference to illustrated embodiments.

In FIGS. 5 and 6, a diffuser plate 12 is placed opposite the light source 11, and a polarizing plate 13 is further placed opposite the diffuser plate 12 with an appropriate gap therebetween. A transparent support 14 having color marks 14a at appropriate positions is superimposed on the polarizing plate 13. The support body 14 is made of transparent glass, for example, and the color mark 14a is made of a phase plate, colored in a desired color, and formed in a desired shape, for example, an arrow shape. Furthermore, the color mark 14a is movable so that it can be placed at a desired position;
In use, it is necessary to set the angle between the polarization direction of the polarizing plate 13 and the polarization direction of the color mark 14a, which is a phase plate, to be 45 degrees. A second polarizing plate 15 is disposed at an appropriate distance from the support 14 of the color mark 14a. The second polarizing plate 15 can be rotated in a plane parallel to the first polarizing plate 13, and the rotation angle is such that at least its polarization direction is parallel to the polarization direction of the first polarizing plate 13. It is assumed that the direction is within a range that can be a direction perpendicular to the polarization direction of the first polarizing plate 13. A transmission type original O such as a slide film is superimposed on the polarizing plate 15 . A camera 19 having a photographing lens 16 and a bellows 18 is arranged at an appropriate distance from the original O.
is arranged and the film 1 loaded in the camera 19
The original O and the color mark 14a can be imprinted on the paper 7.

Next, a procedure for imprinting a color mark according to the present invention will be explained.

First, the color mark 14a is positioned so that the color mark 14a is at a desired position with respect to the document O. At this time, as mentioned above, the polarizing plate 1
The polarization direction of 3 and the polarization direction of the color mark 14a serving as a phase plate are adjusted so that they form an angle of 45°.
Next, the second polarizing plate 15 is rotated to match the polarization directions of the first polarizing plate 13 and the second polarizing plate 15, and then the camera 19 is caused to perform the first exposure. Under this condition, the polarization directions of the two polarizing plates 13 and 15 are the same, so the color mark 14
The light in the image area of document O excluding the part that overlaps with a is:
As indicated by the symbols in FIG. 8, the light passes through two polarizing plates 13 and 15 and is imaged onto a film 17 via a lens 16, so that the image of the original O is imprinted thereon. On the other hand, the light that passes through the first polarizing plate 13 and the color mark 14a serving as a phase plate is transmitted to the color mark 14 as shown by the symbol in FIG.
a changes the polarization direction by 90° (twice the angle between the polarization plate 13 and the polarization direction of the color mark 14a, which is a phase plate), and as a result, the second polarization plate 15
The light beam vibrates in a direction perpendicular to the polarization direction of the light beam, and its transmission is blocked, and the color mark 14a is not exposed on the film 17 (same as if a black object were imprinted).

Next, the original O is removed and the second polarizing plate 15
is rotated by 90 degrees so that the polarization direction of the second polarizing plate 15 and the polarization direction of the first polarizing plate 13 are perpendicular to each other,
Thereafter, double exposure is performed on the same film 17 as before. Under this condition, the light that has passed through the part other than the color mark 14a, which is the phase plate, has its vibration plane perpendicular to the polarization direction of the second polarizing plate 15, as indicated by the symbol in FIG. Passage is blocked by the second polarizing plate 15, and the film 17 is not exposed to light. On the other hand, the light passing through the color mark 14a, which is a phase plate, has its vibration plane changed by 90 degrees as described above, and as a result, as indicated by the symbol in FIG. 15
transmits through the second polarizing plate 15 in accordance with the polarization direction of
Only the image portion of color mark 14a is film 1.
7 will be photographed.

Therefore, when the double-exposed film is developed as described above, the color mark 20 (see FIG. 5) appears superimposed on the image of the original O, and the film 17 becomes a reversal film. If it is a negative film, it can be hung on a slide and enlarged and projected, and if it is a negative film, it can be reproduced as an image in a predetermined color by printing it.

Note that the mark 14a serving as a phase plate may be made colorless and transparent, and a filter of a desired color may be superimposed on the mark 14a during the second exposure. Further, the mark 14a may be formed into a relatively large window frame shape, and the document may be imprinted within the frame bordered by the mark 14a. In this way, the original is imprinted within a frame bordered by the desired color, and the visual effect can be enhanced.

In the embodiment described above, the original O was placed between the second polarizing plate and the camera, but the original O was placed between the second polarizing plate and the camera.
Also, as shown in Figure 5, the dashed line
As shown by OA, it may be arranged between the color mark 14a made of a phase plate and the second polarizing plate 15. However, since the original itself may have a slight function as a phase plate, it is preferable to arrange the original between the second polarizing plate and the camera in order to avoid this influence.

Furthermore, it is sufficient that the first polarizing plate and the second polarizing plate can be rotated relative to each other, and which one should be rotated may be selected depending on the arrangement position and size of the document, and the one that provides better operability.

Further, according to the present invention, it is also possible to imprint a black or white mark over a document image.
For example, when imprinting a black mark on a white or nearly white background, as shown in FIG.
It is only necessary to take a photograph so that the polarization direction of No. 5 coincides with the polarization direction of No. 5. This is because the transmission of light from the part of the mark 14a is blocked, and the transmission of light from the other document image parts is allowed. For example, when imprinting a white mark on a black or nearly black background, use the colorless and transparent mark 14a, first imprint the document under the conditions shown in FIG. is removed and a second exposure is performed under the conditions shown in FIG. In this way, the mark 14a will be strongly exposed and imprinted as a white mark.

According to the present invention, there are the following effects.

(1) Since a single mark is used and converted into an optical positive and negative image, there is no shift between the positive and negative images as with conventional systems, and the image is sharp and free of shifts and shading. A color mark can be obtained.

(2) There is no need to make a precise mask plate, and
There is no need for precise register pins to register the mask plate, so production costs are low, and the user does not need to perform cumbersome operations such as registering the mask plate, improving work efficiency. It will be extremely useful.

(3) Marks of any color can be imprinted at any position, regardless of the brightness or color of the document.

The present invention can be used not only for duplicating slide films but also for plate-making cameras and various other devices.

[Brief explanation of the drawing]

Figure 1 is a slope view showing the first stage of the conventional color mark imprinting method, Figure 2 is a slope view showing the second stage, and Figure 3 is a slope view showing an example of a color mark imprinted state. 4 is an optical layout diagram showing an example of a means for positioning a mask plate in a conventional color mark imprinting method, FIG. 5 is an exploded perspective view showing an embodiment of the present invention, and FIG. 6 is an assembled view of the same. FIG. 7 is an assembled front view showing another embodiment of the present invention, and FIGS. 8 and 9 are diagrams explaining the principle of the present invention. DESCRIPTION OF SYMBOLS 11... Light source, 12... Diffusion plate, 13... First polarizing plate, 14... Support body, 14a... Mark, O... Original document,
15...Second polarizing plate, 19...Camera.

Claims (1)

[Claims] 1. A mark made by a phase plate is disposed between a first polarizing plate and a second polarizing plate which is rotatable relative to the first polarizing plate, and a mark is to be photographed. Place a transmissive original, align the mark so that it is at a desired position relative to the transmissive original, and set the angle between the polarization direction of the first polarizing plate and the mark at a 45° angle. and an original imprinting step in which the polarization direction of the first polarizing plate and the polarization direction of the second polarizing plate are aligned and exposed; A color mark imprinting method comprising a mark imprinting step of performing exposure with the polarization direction of a polarizing plate orthogonal to the polarization direction. 2. The color mark imprinting method according to claim 1, wherein the mark is supported by a transparent plate. 3. The color mark imprinting method according to claim 1, wherein the mark is positionally changeable. 4. The color mark imprinting method according to claim 1, wherein the first polarizing plate is illuminated from behind through a diffuser plate. 5. The color mark imprinting method according to claim 1, wherein the mark is formed in the shape of a window frame, and the document is imprinted within the frame surrounded by the mark.