JPH01306278A - Sheet for braille use - Google Patents

Abstract

PURPOSE:To enable recording while forming of protrusions and coloring are performed simultaneously by letter signals, by providing a color generating layer which generates color by said protrusions or by energy accompanied with said protrusions. CONSTITUTION:A sheet braille use 100 has a pressure-sensitive layer 2 provided on a base 1. When the sheet 100 is held between a block 3 with a recessed portion and a signal pin 4 movable in a direction shown by an arrow A and opposed to the block 3, a protrusion is formed. At the same time, the pressure- sensitive layer 2 is colored by the pressure, and the recessed portion generates color. When the colored sheet 100 having the protrusions formed in the above manner is to be copied, the sheet 100 is used as an original and copied by a general copying apparatus having a light source 101, a lens array of focus distribution type (SELFOC) 102, a photosensitive drum 103, a developing unit 104, a charger 105, a fixing device 106, a platen 107, a transfer charger 108 and a cleaner as main components, and the copy of braille letters is transferred onto a transfer paper P by toners.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a braille sheet that can be used for manuscripts in a copying machine and the like to make braille copies.

[Conventional technology]

Conventionally, Braille sheets have recorded information using only the protrusions. For example, when using a Braille sheet as a manuscript for a copying machine, a desired pattern of protrusions is formed on the Braille sheet, and only the protrusion pattern is copied.
I was reading it.

[Problem to be solved by the invention]

However, in such a case, there were the following problems.

A reader device (reading device) dedicated to Braille sheets is required for copying machines and the like.

Because the contrast of the protrusion pattern is low, it is difficult to obtain faithful Braille copies.

[Means to solve the problem]

The above-mentioned problem is solved by providing a layer that develops color by the energy applied for forming the protrusions or in conjunction with the formation of the protrusions in a Braille sheet that records Braille inscriptions, and producing the desired color according to the recording signal. This problem was solved by a Braille sheet that made it possible to do this. The energy referred to here is typically physical energy such as pressure and heat, but is not limited thereto. For example, chemically, it is possible to color thermal paper with a solvent, although this is not practical.

Hereinafter, the present invention will be explained in more detail with reference to the drawings.

FIGS. 1(a) and 1(b) are diagrams showing an example of use of an embodiment of the present invention. Braille sheet +00 according to this example
In this example, a pressure sensitive layer 2 is provided on a braille sheet space 1.

By holding the Braille sheet 100 between the Braille block 3 having a concave portion and the Braille signal pin 4 which is movable in the direction of the arrow A and faces the Braille block 3, a protrusion is formed thereon. At the same time, the pressure sensitive layer 2 is colored and the Braille section develops color (coloring section, Fig. 1(b)).
C).

In this way, a colored Braille sheet with protrusions formed +
In order to make a copy using 00, for example, as shown in FIG.
, a charger 205, a fixing device 206, a platen 207, a transfer charger 208, and a cleaner 209 are used as main components to perform a copying operation using the braille sheet +00 as a document, and the braille is copied using toner. It may be formed on the transfer paper P.

In this way, a sufficiently clear copy can be made due to the protrusions and coloring. Furthermore, because of the protrusions and coloring, the contrast between the recorded and non-recorded areas is high, and no special reader device is required.

FIG. 3 is a diagram showing another embodiment of the present invention. This embodiment consists of a Braille sheet base 31 and a heat-sensitive layer 32, which are held between a Braille signal bottle and a Braille block, and at the same time,
By applying heat, protrusions are formed and color develops at the same time.

FIG. 4 shows the Braille signal bin used in this case, and FIG. 5 shows the Braille block. The Braille signal bin includes a pin body 41,
It consists of a heater 42 and a drive device 43, and the Braille block consists of a Braille block main body 51 and a heater 52.

FIG. 6 is a diagram showing still another embodiment of the present invention. In this embodiment, a coloring layer 62 is provided on the front and back surfaces of a sheet base 61, and can be applied to both a type having a pressure-sensitive layer and a type having a heat-sensitive layer.

Note that the pressure-sensitive layer and the heat-sensitive layer can be used without any restriction as long as they are colored by pressure or heat, but the following are typical examples.

That is, the pressure-sensitive layer is a layer mainly composed of a color developer (such as a solid acid) and microcapsules containing a colorless dye that is colored when in contact with the developer. Examples of this type of dye include dihydroquinozaline, chromoazindolizine (all of which produce blue color), and the like (all of which produce black color).

The heat-sensitive layer is a layer mainly containing a heat-sensitive dye and a color developer. Examples of this type of pigment include crystal violet lactone (hereinafter, blue color is expressed), etc. (hereinafter, black color is expressed), etc. (hereinafter, red or blue color is expressed depending on temperature).

〔Example〕

Example 1 A Braille sheet as shown in FIG. 1 was produced as follows.

First, a pressure sensitive layer material was prepared. This was applied to a braille sheet base to form a pressure sensitive layer with a coating weight of 10±2 g/m 2 .

Comparative Example 1 A Braille sheet was produced in the same manner as in Example 1 except that the pressure sensitive layer was not provided.

(Evaluation) The Braille sheets of Example 1 and Comparative Example 1 were copied using a copying machine PC-5 (manufactured by Canon Inc.).

*State where only the shadow part is copied [Effect of the invention] As explained in detail above, the Braille sheet of the present invention, which makes it possible to simultaneously record the formation and coloring of protrusions using character signals, It has the following effects.

(1) A Braille manuscript with high contrast can be obtained, which can be used as a manuscript for a reader in a copying machine or the like.

(2) Since the contrast is large, no special reader device is required.

(3) Existing Braille typewriters can be used.

[Brief explanation of the drawing]

FIGS. 1(a) and (b) are diagrams showing a recording state in an embodiment of the present invention, and FIG. 2 is a diagram showing copying using the Braille sheet of the present invention. Fig. 3 is a diagram showing another embodiment of the present invention, Fig. 4 is a diagram showing an example of a Braille signal pin, Fig. 5 is a diagram showing - of a Braille block, and Fig. 6 is a diagram showing another embodiment of the present invention. It is a figure showing an example. 1.31.61 + Braille sheet base 2: Pressure sensitive layer 32: Heat sensitive layer 62: Coloring layer 3: Braille block 4: Braille signal pins 42, 52: Heater

Claims (1)

[Claims] 1) A Braille sheet for recording Braille by forming protrusions, characterized by comprising a layer that develops color by energy applied for or in conjunction with the formation of the protrusions.