JPS6227704B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for imprinting characters, etc. during X-ray photography.

(Prior Art) When taking an X-ray photograph of a human body, the date and the name of the person to be photographed are imprinted on the film at the same time.
Single character type made of lead, which is difficult for X-rays to pass through, were lined up to display the required information and fixed as appropriate before being photographed.

In addition, fine powder of a lead compound such as lead oxide, lead white, or lead sulfide, and a quick-drying binder such as pyroxylic acid are applied in the form of a paste to a piece of paper attached to a predetermined position on the film or underframe. Take the mixed paint and write the required letters, etc.
Line photography may also be done.

In this case, since the characters written on the piece of paper contain a large amount of lead compounds, the characters are imprinted onto the film of the film cassette etc. without transmitting X-rays.

(Problems to be Solved by the Invention) In the first method described above, the work of picking up single letters by hand and arranging them each time a photograph is taken is
This is extremely troublesome and time consuming.

In addition, in the second method described above, if the content of lead compounds in the paint is low or if hard X-rays with strong penetrating power are used, the characters printed on the film may become unclear. There is.

(Means for Solving the Problems) The present invention aims to solve the above problems, and consists of folding thin plates that can easily transmit X-rays, and adding a lead compound to each folded portion. X-ray photography is characterized in that X-ray photography is performed by pasting required characters, etc., on key points of a film cassette using a paint containing a large amount of This is a method of engraving characters, etc. at the time.

(Function) During X-ray photography, the amount of X-rays that pass through characters written overlappingly on the stacked thin plates becomes extremely small.

(Example) Embodiments of the present invention will be described based on the drawings.

An integral multiple of the size necessary to write the desired characters, etc.
For example, the drawing part 1 of a semi-transparent piece of paper 1 that is twice the size
Place the lower half of the barrel at the key point of film cassette 2,
After pasting with adhesive tape or the like and writing characters 3 on the drawing section 1a, fold the upper half of the margin section 1b downward and overlap it with the drawing section 1a, and then on the outer surface of this margin section 1b. Overwrite the same characters, etc. again by tracing the transparent characters, etc. 3, and then press
Take a line photo.

As a paint for drawing the above letters etc. 3,
For example, a paste mixture of fine powder of a lead compound such as lead oxide, white lead, or lead sulfide and a quick-drying binder such as pyroxine lacquer is used.

Note that the paper strip 1 with letters etc. 3 written on it in the drawing section 1a is folded up in advance, and after or before writing the letters etc. on the outer surface of the margin section 1b, it is pasted onto the film cassette 2. You may.

(Effects) When photographing, characters, etc. overlap two or more times, so the amount of lead compounds in the X-ray passage increases, and the characters, etc. are clearly imprinted on the film.

Moreover, since the troublesome effort of picking up the necessary characters one by one from a large number of single characters made of lead plates as in the conventional method for character engraving can be eliminated, X-ray photography can be performed quickly.

[Brief explanation of the drawing]

The figure is a perspective view of a film cassette for explaining an embodiment of the present invention. 1... Piece of paper, 1a... Drawing area, 1b... Margin area, 2... Film cassette, 3... Characters, etc.

Claims (1)

[Claims] 1 Thin plates that can be easily penetrated by X-rays are folded, and the desired characters, etc. are drawn on each folded part using a paint containing a large amount of lead compounds so that they overlap each other, and then a film is made. A method for imprinting characters, etc. during X-ray photography, which is characterized in that the characters are pasted at important points on a cassette and X-ray photography is performed.