JP2519763Y2 - Transfer thermal recording device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transfer type thermal recording apparatus using a subtractive mixed primary color ink or a transfer film coated with black ink in addition to these.

[0002]

2. Description of the Related Art Generally, when printing a large number of colors using inks of three subtractive primary colors, yellow (Y), magenta (M), and cyan (C), the ink material of yellow (Y) is red (R). ) And green (G) wavelengths are transmitted, the magenta (M) ink material transmits red (R) and blue (B) wavelengths light, and the cyan (C) ink material is green (G). ) And blue (B) wavelengths are transmitted, and this property is utilized to determine the color of the ink applied to the transfer film.

Specifically, as described in Japanese Patent Publication No. 51-24889, there is one provided with a color identification means for identifying each color one by one. In this case, two sensors that can detect different colors are required as the color identification means.
For example, by using a sensor that detects light of wavelengths of red (R) and green (G), yellow (Y) becomes R
Both the sensor and G sensor are turned on, the R sensor is turned on for magenta (M), the G sensor is turned off, and both the R sensor and G sensor are turned off for cyan (C), so that each color can be identified. Of.

Also, as described in, for example, Japanese Utility Model Laid-Open No. 60-5856, there is one in which a detection mark is attached to each of the ink ribbons of a plurality of colors so that each color can be identified.

[0005]

However, if two sensors are provided to detect different kinds of colors, the spectral characteristics of the light irradiating the sensors must be in a wide band, and are affected by external light. As a result, malfunctions are likely to occur. Further, it is complicated to attach the detection mark to the ink ribbon, the number of manufacturing processes is increased, and the cost is increased.

[0006]

[Means for Solving the Problems ]
Therefore, the first aspect of the present invention is to use a thin film on a thin film
Ink (M), cyan (C) ink or these three sources
In addition to the color, the transfer film coated with black (Bk) ink
In a transfer-type thermal recording device that uses a
The transmission spectral characteristics of each color for the yellow (Y) ink
The transmission amount of light of the wavelength of Lou (B) is red (R) and green.
Less than the transmission amount of light of the wavelength of G (G),
(M) ink is green (G) and blue (B) waves
The transmission of long light is greater than the transmission of light of red (R) wavelength.
There are few cyan (C) inks and green (G) and
Of the blue (B) wavelength
Set less than the permeation amount, and sandwich the transfer film
Providing a transmissive sensor composed of a light emitting element and a light receiving element,
One of the colors of the transfer film is
It is characterized by using the one that distinguishes only. Transcription
The transmission spectral characteristics of each color of Rum
The transmission amount of light of blue (B) wavelength is red (R) and green.
Less than the transmission amount of light of the lean (G) wavelength, magenta
(M) ink is green (G) and blue (B) waves
The transmission of long light is greater than the transmission of light of red (R) wavelength.
There are few cyan (C) inks and green (G) and
Of the blue (B) wavelength
Set less than the permeation amount, and sandwich the transfer film
Providing a transmissive sensor composed of a light emitting element and a light receiving element,
One of the colors of the transfer film is
Since the one that identifies only the ink is used,
The transfer film with a simple structure
The head can be accurately positioned at a predetermined color position. Claim 2
Is a narrow band green that detects only yellow (Y)
(G) Transfer-type thermal sensitivity characterized by being identified by a color sensor
It is a recording device. Green identifying only yellow (Y)
(G) Since a color sensor is used, only the yellow (Y) position
By identifying the
The head can be accurately positioned at the erotic (Y) position. Claim 3
Is a narrow band blue (B) that detects only cyan (C)
Transfer type heat-sensitive recording instrumentation, characterized in that that identifies the color sensor
It is a place. Blue (B) color that identifies only cyan (C)
Since a sensor is used, only the cyan (C) position is identified.
Cyan transfer film with a simple structure
The head can be accurately positioned at the position (C).

[0007]

Operation: Subtractive three primary colors yellow (Y), magenta (M), cyan (C) or black (Bk) to these
By detecting the position of only one color of the added ink and controlling the feed amount of the transfer film with the position of the one color as a reference, the ink of a predetermined color is exposed at the printing position.

[0008]

Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 is a diagram showing transmission characteristics of a transfer film used in the present invention, FIG. 2 is a diagram showing photosensitivity characteristics of a sensor used in the present invention, FIG. 3 is a principle diagram of a card printer to which the present invention is applied, FIG. Is a plan view of a transfer film used in the present invention, FIG. 5 is a waveform diagram showing an operation example of a sensor used in the present invention, and FIG. 6 is a diagram showing reflection characteristics of each color ink during printing.

In the card printer shown in FIG. 3, first, a card 1 as a transfer sheet is sent to a card holder (not shown) located at the position of the thermal head 2, and the sending roller 3
4 and the take-up roller 4, and as shown in FIG. 4A, a subtractive color mixture of three primary colors yellow (Y), magenta (M), cyan (C), and FIG. As described above, the transfer film 5 on which each sublimable ink containing black (Bk) is applied at a predetermined pitch is moved. Then, the transmissive sensor 8 including the light emitting element 6 and the light receiving element 7
The boundary between yellow (Y) and magenta (M) is detected.

Then, after the thermal head 2 is pressure-bonded to the card 1 via the transfer film 5, the heating resistor of the thermal head 2 is energized to generate heat, and the ink of the transfer film 5 is heated to move the card 1. Meanwhile, the card 1 is printed with ink.

In this case, after the yellow (Y) ink is first printed, the thermal head 2 is separated, the card 1 is returned to the original position, and the transfer film 5 is moved by the feed roller 9 for a predetermined distance to generate the magenta (M) ink. ) The ink is printed so as to face the printing position, and then cyan (C) or black (Bk) ink is printed in the same manner. Here, transfer film 5
The reference position for moving a predetermined distance is the boundary line between yellow (Y) and magenta (M) detected by the transmissive sensor 8.

Here, as the transfer film 5, an ink material of subtractive three primary colors yellow (Y), magenta (M), cyan (C) and black (Bk) whose transmission characteristics are shown in FIG. 1 is used. To use. The transfer film 5 has transmission spectral characteristics of each color, and the yellow (Y) ink material transmits light of red (R) and green (G) wavelengths in the transmission amount of light of blue (B) wavelength. The amount of light of the magenta (M) ink material is less than the amount of light of the green (G) and blue (B) wavelengths of light transmission of the red (R) wavelength, and the cyan (C) ink material is less than that of the cyan (C) ink material. The amount of light transmitted in the green (G) and red (R) wavelengths is set to be smaller than the amount of transmitted light in the blue (B) wavelength. However, when printing is performed using this transfer film 5, the reflection characteristics of each color ink at the time of printing are as shown in FIG. 6 , which is almost the same as the commonly used printing ink.

Therefore, as the transmissive sensor 8, a sensor having a total sensitivity characteristic that identifies only one color and does not identify the other colors as shown in FIG. 2, that is, a narrow band transmissive sensor is used.
The green (G) sensor is used here. Thereby, the transfer film 5
Since only the yellow (Y) ink material transmits a large amount of light of the green (G) wavelength, the transmission type sensor 8 can detect the yellow (Y) of the transfer film 5.
In this green (G) sensor, as shown in FIG. 5A, the transfer film 5 is turned on at the position of the yellow (Y) ink as shown in FIG. As shown in FIG. 5 (b), it cannot be identified because it is turned on at the positions of the yellow (Y) and cyan (C) inks as shown in FIG. That is, a general transfer film requires two sensors.

From the transmission spectral characteristics of the transfer film 5, if a blue (B) light detection sensor having the characteristics shown in FIG. 2 is used as the transmission type sensor 8, the transfer film 5 will have cyan (C) ink as described above. Since only the blue (B) wavelength has a large transmission amount, only the cyan (C) position can be detected.

The present invention can be similarly applied to a transfer type thermal recording apparatus other than a card printer, and the transfer target sheet is not limited to a card and may be a normal recording sheet.

[0016]

[Effect of the Invention] The present invention has the following effects due to the above configuration. Claim 1 is a subtractive color mixture of three primary colors on a thin film.
Erotic (Y), magenta (M), cyan (C) ink or
In addition to these three primary colors, black (Bk) ink
For a transfer type thermal recording device using the applied transfer film.
The transmission spectral characteristics of each color of the transfer film.
In the ink of (Y), the transmission amount of light of the wavelength of blue (B) is
From the transmission amount of light of the wavelengths of the red (R) and green (G)
Less, magenta (M) ink is green (G) and
The transmission amount of light of blue (B) wavelength is the wavelength of red (R)
Is less than the amount of transmitted light, the cyan (C) ink is
The transmission amount of light of wavelengths of red (G) and red (R) is blue.
-Set the transmission amount less than the wavelength of (B), and transfer
Transmission consisting of a pair of light-emitting element and light-receiving element sandwiching a frame
Type sensor is provided, and each of the transfer film is attached to this transmission type sensor.
Characterized by using one that identifies only one of the colors
And The transmission spectral characteristics of each color of the transfer film are
In the ink of (Y), the transmission amount of light of the wavelength of blue (B) is
From the transmission amount of light of the wavelengths of the red (R) and green (G)
Less, magenta (M) ink is green (G) and
The transmission amount of light of blue (B) wavelength is the wavelength of red (R)
Is less than the amount of transmitted light, the cyan (C) ink is
The transmission amount of light of wavelengths of red (G) and red (R) is blue.
-Set the transmission amount less than the wavelength of (B), and transfer
Transmission consisting of a pair of light-emitting element and light-receiving element sandwiching a frame
Type sensor is provided, and each of the transfer film is attached to this transmission type sensor.
Since the one that identifies only one of the colors was used,
Simple configuration by identifying only one color position
The head of the transfer film can be accurately
Wear. Claim 2 is a narrow band for detecting only yellow (Y).
Characterized by the green (G) color sensor of
It is a transfer type thermal recording device. Identify only yellow (Y)
Because a green (G) color sensor is used, yellow (Y)
By identifying only the position of
The head can be accurately positioned at the yellow (Y) position.
It A third aspect of the present invention is a narrow band of detecting only cyan (C).
Transfer characterized by identification with a blue (B) color sensor
Type thermal recording apparatus. A block that identifies only cyan (C)
Since the roux (B) color sensor was used, the position of cyan (C)
Transfer film with a simple structure by identifying only
The head can be accurately moved to the cyan (C) position.

[Brief description of drawings]

FIG. 1 is a diagram showing a transmission characteristic of a transfer film which constitutes a transfer type thermal recording apparatus according to the present invention.

FIG. 2 is a diagram showing the photosensitivity characteristics of a transmissive sensor that constitutes the transfer thermal recording apparatus according to the present invention.

FIG. 3 is a principle diagram of a card printer as an example of a transfer type thermal recording apparatus according to the present invention.

FIG. 4 is an explanatory view of a transfer film used in the present invention.

FIG. 5 is a waveform diagram showing an operation example of a sensor.

FIG. 6 is a diagram showing the reflection characteristics of each color ink.

[Explanation of reference numerals] 1 ... Card (transferred sheet), 2 ... Thermal head, 5
... Transfer film, 8 ... Transmissive sensor.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Bibliography Shown 62-48558 (JP, U) Shown flat 2-17357 (JP, U)

Claims (3)

(57) [Scope of utility model registration request] 1. A transfer film in which a subtractive color mixture of three primary colors yellow (Y), magenta (M), and cyan (C) ink or a black (Bk) ink in addition to the three primary colors is applied on a thin film is used. In the transfer type thermal recording device, the transmission spectral characteristics of each color of the transfer film were
In the ink of (Y), the transmission amount of light of the wavelength of blue (B) is
From the transmission amount of light of the wavelengths of the red (R) and green (G)
Less, magenta (M) ink is green (G) and
The transmission amount of light of blue (B) wavelength is the wavelength of red (R)
Is less than the amount of transmitted light, the cyan (C) ink is
The transmission amount of light of wavelengths of red (G) and red (R) is blue.
-(B) is set to be smaller than the transmission amount of the wavelength, and one set of a light emitting element and a light receiving element sandwiching the transfer film.
The transmission type sensor configured in
Identification of only one of the colors on the transfer film
A transfer-type thermal recording apparatus, which is characterized by using . 2. The transfer type thermal recording apparatus according to claim 1, wherein a yellow (G) color sensor having a narrow band for detecting only yellow (Y) is used for identification. 3. A transfer type thermal recording apparatus according to claim 1, wherein the transfer type thermal recording apparatus is identified by a narrow band blue (B) color sensor that detects only cyan (C).