JPH055563Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The present invention is a method for forming an electrostatic latent image on a dielectric film such as a plastic film by charging electrostatic charges along various patterns such as desired letters, pictures, and patterns. This invention relates to a pen for charging electrostatic charge in electrostatic electrography, in which a latent image is visualized by drawing a latent image and sprinkling powder paint on it.

Prior art A desired character, picture, or pattern is drawn on a dielectric film by charging electrostatic charges along the pattern arrangement, creating an electrostatic latent image, and sprinkling powder paint such as powder for voltage detection on this. , electrostatic electrography is used in which a powder coating is deposited on the electrostatic latent image charged with electrostatic charges and visualized. That is, to explain this with reference to FIG. 1, a desired dielectric sheet 2 to be drawn is placed on a grounded metal plate 1, and a power source 3 and, if necessary, a high voltage generator (not shown) are placed on that surface. Using a conductive stylus 5 whose handle 4 is connected to an electrically insulating material, the user draws a pen according to a desired letter, picture, pattern, etc. As a result, electrostatic charges are charged on the dielectric sheet 2 along the stroke of the pen. If a powder paint such as a powder for voltage detection is sprinkled on this, the paint will adhere to the charge area of the electrostatic charge, and the desired written letters or pictures will be visualized on the dielectric sheet 2. It happens. However, the pens that use this kind of electrostatic electrography use conductive metal or carbon rods, and the tip is machined appropriately to form a stylus shape or a rounded tip shape. That is the reality. Even if such a conventional pen writes a desired character or picture on a dielectric sheet, a visible image that can be seen with the naked eye does not appear on the dielectric sheet, but is a latent image. Therefore, if the calligraphy work is interrupted or the calligrapher is replaced, even if the calligraphy work is to be continued again, it is impossible to determine where the calligraphy work was interrupted, making it impossible to continue the calligraphy work. Furthermore, even if there is an error in the brushstrokes, the error cannot be recognized because it is a latent image, and the error caused by the brushstroke cannot be corrected, and becomes visible in the subsequent work of applying powder paint. The reality was that the mistake was only recognized at the stage.

Purpose of the invention The present invention was created in view of the current situation as described above, and its purpose is to charge electrostatic charges along a desired pattern of letters, pictures, patterns, etc. on a dielectric sheet using electrostatic electrography. In regards to this,
The present invention provides a charge charging pen that can charge electrostatic charges and draw lines that can be seen with the naked eye, and includes a conductive wire connected to a power source via a switch mechanism, an ink injection tube, A cap member made of a conductive material and holding a protruding steel ball rotatably is disposed at the end of an outer cylinder made of an insulator into which a steel ball is inserted, and one end of the conductive wire is connected to the cap member. A charge charging pen is characterized in that the end of the ink injection tube is connected to a steel ball part, and a ground terminal is provided outside the outer cylinder.

Structure of the Invention FIG. 2 is a partially cutaway sectional view illustrating an embodiment of the charge charging pen of the invention. In the figure, reference numeral 11 is an outer cylinder made of an electrical insulator such as synthetic resin or ceramics, and 12 is a circle (corner) made of a conductive material fixed to the end of the outer cylinder 11 by means such as screwing. It is a cone-shaped cap, and a steel ball 13 is rotatably held at its tip 12A in a state of protruding to the outside. An ink injection tube 14 for supplying display liquid such as ink to the steel ball 13 is connected to the steel ball 13 by passing through the cap 12, and is housed in the outer cylinder 11. Reference numeral 15 denotes a conductive wire for transmitting power from a power source (not shown) to the cap 12, which is connected via a switch mechanism 16 and housed in the outer cylinder 11. Note that if a conductive material is used for the ink injection tube 14, the ink injection tube 1
4 also serves as the conductive wire 15, so the conductive wire 1
5 may be omitted. 17 is a ground conductor and the outer cylinder 11
It is led out via a conductive wire 18.

Function of the invention The charging pen of the invention as described above is operated as follows. That is, viscous ink A for ballpoint pens, for example, is injected into the ink injection tube 14 in advance, the conductive wire 15 is connected to a power source (not shown), and the ground conductor 17 is connected to the dielectric sheet shown in FIG. It is grounded together with the power supply ground through the metal plate 1 on the back side of the device. In this state, a DC voltage of approximately 700 to 5000 V is applied between the cap 12 and the ground, and the steel ball 13 is placed on the dielectric sheet 2 to write in accordance with desired letters, pictures, patterns, etc. . As a result, ink A is poured out onto the dielectric sheet 2 through the holding gap of the steel ball 13 according to the stroke, and the line drawing is visualized and displayed, and the dielectric sheet 2
Electrostatic charges are charged upward along the stroke. Next, when powder paint is sprinkled onto the dielectric sheet 2, the powder paint adheres to the areas drawn with ink A and charged with electrostatic charge according to the above-mentioned strokes.

As a power source, an appropriate conventionally commonly used DC high voltage power source which is required separately may be prepared externally, or a conventionally known step-up circuit may be implemented by storing dry batteries in the outer tube 11 of the present invention. You may use a power supply that is built in and boosts the voltage to a desired high voltage, or even a 100V household AC power supply can be used if a conventionally known AC to DC conversion circuit and booster circuit are built into the outer cylinder 11. You can. Of course, these can be selected and used as appropriate.

Effects of the invention Since the present invention has the above-mentioned structure and is operated, if a desired pattern such as letters, pictures, patterns, etc. is drawn on a dielectric sheet using the charge pen of the present invention, As the electric charge is charged according to this stroke, the line drawing is visualized and displayed, so the area where the electric charge has been charged becomes extremely obvious. When continuing work again, it is extremely easy to determine where to continue the work, which not only makes it easier to continue work, but also makes it possible to clearly identify typographical errors caused by mistakes in handwriting, and mistakes in pictures and patterns. Therefore, it is possible to recognize the location where the charge charge is to be corrected, and the charge charge can be corrected very easily. Furthermore, since the pen tip is made of a rotatable steel ball like a ballpoint pen, writing strokes are extremely smooth and workability is improved, and damage to the dielectric sheet caused by writing strokes is reduced, making the charging work of writing strokes economical and efficient. It has the advantage that it can be carried out reliably.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram for explaining electrostatic electrography, and FIG. 2 is a partially cutaway sectional view for explaining an embodiment of the electrostatic charge charging pen of the present invention, in which 11 is an outer cylinder, 12 is a cap, 13 is a steel ball, 1
4 is an ink injection tube, 15 and 18 are conductive wire bodies, 16
1 is a switch mechanism, and 17 is a ground terminal.

Claims (1)

[Scope of utility model registration request] A cap made of a conductive material with a steel ball protruding and rotatably held at the end of an outer cylinder made of an insulator into which a conductive wire and an ink injection tube are inserted, one end of which is connected to a power source via a switch mechanism. The other end of the conductive wire body is connected to the cap member, and the end of the ink injection tube is communicated with the steel ball part, and the ground terminal is pulled out and placed outside the outer cylinder. A charging pen characterized by: