JPH037189Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a paper holder, and more specifically, to a paper holder that holds drafting paper or the like so that it does not move.

[Conventional example] For example, when drawing paper by placing it on a drawing board, conventionally the drawing paper is stopped with a presser foot or drafting tape to prevent it from moving, but this operation is troublesome and , rulers, etc. may also get caught in it. On the other hand, X-Y
Some recorders use electrostatic adsorption to fix the recording paper, but this requires electricity to be applied while the paper is being fixed, which is not desirable in terms of power saving, and the structure is complicated. Winning will inevitably increase costs.

[Purpose of the invention] This invention focuses on an electret film that has the property of being semi-permanently charged on its surface even if the charge is removed after applying a high electric field. The purpose of this invention is to provide an easy-to-use paper holder that can hold papers and eliminate the troublesome conventional method of constantly turning on electricity during use.

[Structure of the invention] This invention will be described in detail below with reference to embodiments shown in the accompanying drawings.

As shown in FIG. 1, this paper holder 1 consists of a base plate 2 and an electret film 3 stuck on the base plate 2. As shown in FIG. In this case, the base plate 2 may be an electrical insulator such as synthetic resin, but the base plate 2 may be made of an electrical insulator such as a synthetic resin.
In order to further enhance the electrostatic adsorption effect, it is preferable to make it from a conductive material such as a metal plate such as aluminum or a conductive rubber sheet.
Further, as the electret film 3, for example, fluorinated ethylene propylene copolymer (FEP) is used.
Alternatively, it may be polyvinylidene fluoride (PVBF), etc., and is formed by subjecting these resin films to a charging treatment.

This paper holder 1 is attached to a drawing board 4 via a double-sided adhesive tape 5 or the like, as shown in FIG. 2, for example. When the drawing paper 8 is placed on the electrically charged electret film 3, the paper 8 is attracted and held by the electret film 3 by electrostatic adsorption, and it is unlikely that it will easily shift during drawing. do not have. In order to more reliably prevent the sheet 8 from shifting, it is preferable to form fine irregularities on the surface of the electret film 3.

When using this paper holder 1,
As shown in FIG. 2, a corona discharge generator 7 is attached to the flexible arm 6 of the drawing machine, and when removing the paper 8 that is suctioned and held by the electret film 3, the corona discharge generator 7 is connected to an AC power supply. The paper 8 can be easily removed by connecting it to the terminal and removing the static electricity by corona discharge with alternating current. When the paper 8 is to be fixed again, the corona discharge generator 7 may be connected to a DC power source to cause corona discharge and convert the film 3 into an electret film.

[Effects of the invention] As is clear from the description of the embodiments described above, according to this invention, paper such as drafting paper can be held by suction without shifting without using a presser foot or drafting tape. I can do it. In addition, once the electret film is charged, there is no need to operate the power supply unless there is some kind of disturbance such as the generation of neutralized ions due to organic solvent vapor or spark discharge, so the paper holder can be placed anywhere. It is extremely convenient to handle as it can be moved and used at any desired location.

Note that this invention is not limited to the applications described in the above embodiments, but can also be applied to boards and bulletin boards on which slips, notes, etc. can be easily hung.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing the paper holder of this invention, and FIG. 2 is a sectional view showing the paper holder placed on a drawing. In the figure, 1 is a paper holder, 2 is a base plate, and 3
is an electret film.

Claims (1)

[Scope of utility model registration request] A charged electret film is pasted onto a base plate made of a conductive metal plate such as aluminum or a synthetic resin plate such as a conductive rubber sheet, and the electrostatic attraction of this electret film causes the paper to A paper holder characterized by being adapted to hold various types of paper.