JPH073401Y2 - Color patch for color plate making - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a color patch which is attached to a peripheral portion of a positive film, which is an original plate, when the color plate is made.

<Prior Art> In general, when creating a multi-colored printed matter, a positive film, which is an original plate for each color, and a printing plate for each color, which has been exposed by printing, are prepared, and common to the printing plates. Na 1
The stepwise overprinting for each color is performed on each sheet.

At that time, as a guide index for distinguishing the color type of the original plate or the printing plate, or determining the quality of the disassembly negative and the quality of masking correction, conventionally used on the periphery of the positive film, which is the original plate, in printing. It is customary to give initial English letters such as cyan color "C", magenta color "M", yellow color "Y", and black color "B", which are the coloring color inks to be used. A solid printing surface with a small rectangular contour is also provided near the English letters.

<Problems to be solved by the invention> However, according to such a conventional guide index, the initial English letters and the solid printing surface are merely displayed as a black and white monotone on the positive film of the original plate, Since it is not colored as an obvious color, there are problems that the front and back of the positive film are accidentally printed on the printing plate, and it is easy to make a mistake in distinguishing colored color ink and masking correction given to the printing plate. .

<Means for Solving the Problems> The present invention intends to improve such problems, and as a configuration of a color patch useful for that purpose, firstly, the same color as the ink to be used for printing is formed on the surface of the seal piece. While applying the color indicator film in a solid printing state, also on the back surface of the seal piece, while shielding the light from the positive film of the original plate when printing on the plate, and depositing a light shielding film of a different colored color from the indicator film, Through the adhesive applied on the back surface of the light-shielding film, a peelable separator is integrally attached to the seal piece, and the seal piece peeled from the separator is attached to the periphery of the positive film for use. Secondly, the indicator film of the same color as the ink to be used for printing is applied to the surface of the transparent seal piece in the solid printing state. On the other hand, a light-shielding film of a colored color different from that of the indicator film is applied to the back surface of the seal piece at the time of baking from the positive film of the original plate to the printing plate, and is also applied in a solid printing state. Through the adhesive applied on the back side, a separable separator is attached integrally to the seal piece, and the seal piece peeled from the separator is attached to the periphery of the positive film and used. It is a feature.

<Operation> In any of the above-mentioned constitutions, when performing color plate making, the colored color ink to be used for printing is the same as that of the plate in the peripheral portion of the positive film as the original plate. By the index coating applied to the seal piece as a coloring color,
Since it is taught at a glance, the original plate for each color can be distinguished without error, and a light-shielding film of a colored color different from that of the index film is also provided on the back surface of the seal piece, so Can also be discriminated, and back printing on the printing plate can be effectively prevented.

Further, if a transparent portion is provided on a part of the seal piece and the contour shape of the transparent portion is formed so as to be readable as the initial English letters of the colored color ink to be used for printing, the shape of the transparent portion when printing on the printing plate is Since the translucent part can be kept white, the color type of the printing plate can be distinguished from the English letters at a glance.

<Embodiment> The concrete construction of the present invention will be described in detail below with reference to the illustrated embodiment. In FIGS. 1 and 2 showing the first embodiment of the color patch, (10) is a paper or plastic film or the like. It is a sealing piece made of thin film material of about 8 ×
Although it is punched into a 25 mm rectangle, its contour shape and size can be freely selected.
On the surface of the seal piece (10), an index film (11) of the same color as the ink to be used for printing is applied in a solid printing state. In other words, if the printing ink is cyan ink, for example, in view of the relationship with the printing plate of the positive film (F) that is the original plate for color plate making, the cyan color is used as the indicator film (11) and the sealing piece (10 ), The color is developed from the surface of the). Actually, in addition to the above cyan color, magenta, yellow, and black indicator films (11) are provided under the same correspondence. A total of four types of seal pieces (10) will be prepared as shown in FIG.

Similarly, (12) is a light-shielding coating made of metal vapor-deposited on the back surface of the seal piece (10), which has a silver color different from the indicator coating (11). In the first embodiment, a metal-deposited film such as aluminum can be used as the seal piece (10), and the index film (11) is applied to the non-deposited surface of the film by silk screen printing or hot stamping. That is, it can be applied in a solid printing state.

When the image is printed on the printing plate from the positive film (F) of the original plate by the light-shielding film (12) to expose it to light,
Since the light-shielding film (12) is provided with a color different from that of the index film (11), it is possible to distinguish the front and back of the positive film (F). ing.

(13) is an adhesive coated on the back surface of the light-shielding film (12) of the seal piece (10), and (14) is detachably attached to the seal piece (10) via the adhesive (13). As a separator (release sheet), the seal piece (10) after peeling is transferred and adhered to the positive film (F) of the original plate as shown in FIGS.

In that case, a certain print image (1
5) and the register mark (so-called register mark) (16) indicating the section are formed, the above-mentioned seal piece (10) is attached to the peripheral portion outside the section and used. If the piece (10) is provided with, for example, a cyan color indicator film (11), the attached positive film (F) is used as an original plate of a printing plate to be printed by using cyan ink. , Which can be clearly discerned, which means magenta or black,
The same applies to the yellow color.

In addition, to the surface of the index film (11) on the seal piece (10),
As suggested by FIG. 4, a masking sheet (protective sheet) (17) made of a transparent plastic film, which is slightly larger than the sealing piece (10), is backed by an adhesive (18) attached to the masking sheet (protective sheet). If it is left attached, the transfer operation of the seal piece (10) to the positive film (F) can be performed lightly, which is extremely useful.

It goes without saying that the adhesive (18) of the masking sheet (17) has a weaker adhesive strength than the adhesive (13) of the separator (14).

A part of the indicator film (11) and the light-shielding film (12) in the seal piece (10) as described above can be formed with light-transmitting parts (19) that are aligned with each other on the front and back sides thereof. That is, as shown in FIG. 2, a part of the seal piece (10) is punched out in a penetrating state, and the punching opening shape is formed so as to be legible as an initial English letter of a colored color ink which should be particularly used for printing. . In this respect, in the drawing, a state is shown in which the yellow initial English letter "Y" is punched and opened like edging.

If such a light-transmitting part (19) is also formed, when the image (15) is printed and exposed from the positive film (F) attached with the seal piece (10) to the printing plate, the printing is performed. The yellow initial English letter "Y" is displayed as a blank character on the plate, and as a result, the sticker piece (10) is entirely blackened, but the printing to be used for this Even if the ink is yellow ink, the printing plate can be clearly identified at a glance.

Next, FIG. 5 shows a second embodiment of the color patch corresponding to FIG. 2, in which the seal piece (10) is constructed.
Is specified as a particularly transparent plastic film, and a light-shielding film (12) of a colored color different from the index film (11) on the surface is provided on the back surface of the film in a solid printing state by a gravure printing method or the like. The index film (11) is given a magenta color, yellow color, cyan color, or black color that should be used for printing, while the light-shielding film (12) is silver color, etc. is there.

At that time, the translucent parts (19
By leaving a) and (19b), the initial English letters of the printing ink which should also be used are exposed as a blank state on the printing plate which is printed by exposure from the positive film (F). According to this, as compared with the first embodiment of FIG.
The entire film of the index film (11) is a transparent film seal piece (1
Since it is supported by (0), the initial English letters partitioned as the translucent part (19) are excellent in edging stability and can be prevented from falling off during the transfer operation to the positive film (F).

In addition to the initial English letters, the seal piece (10) can be provided with the source name of the original plate or the printing plate and other blank characters in addition to the initial English letters.

<Effect of the Invention> As described above, in the color patch for color plate making according to the present invention, the indicator film (11) of the same color as the ink to be used for printing is formed on the surface of the seal piece (10) due to its constitution. While giving a solid printing state, on the back surface of the seal piece (10), a light-shielding film of a colored color different from that of the indicator film (11) acts on the back surface of the seal piece (10) to shield light when printing from the positive film (F) of the original plate to the plate. 12) is vapor-deposited, and a separable separator (14) is integrally attached to the seal piece (10) via an adhesive (13) coated on the back surface of the light-shielding film (12). Seal piece (10) peeled from 14)
Is determined to be attached to the peripheral portion of the positive film (F) for use, so that the problem of the prior art described at the beginning can be completely solved.

That is, since the indicator film (11) of the same color as the ink to be used for printing is applied to the surface of the seal piece (10) in a particularly solid state, the seal piece (10)
It is possible to use this by attaching it to the positive film (F) as the original plate, while allowing the positive film (F) to develop a colored color, which can be clearly discerned, for example, for magenta ink. It is possible to reliably prevent an error such as printing.

Also, the positive film (F) is provided on the back surface of the seal piece (10).
From the positive film (F) because a light-shielding film (12) against the printing action from the plate to the printing plate is also provided, and the colored color of the light-shielding film (12) is different from the surface index film (11). It is also possible to effectively prevent accidental exposure of the front and back sides to a printing plate.

Furthermore, at the time of baking, press the glass from above,
Since the sealing piece (10) of the present invention is designed to adhere to the positive film (F) when the air removing operation is performed, the above-mentioned air removing operation is automatically performed depending on the thickness of the sealing piece (10) itself. This is achieved reliably, and so-called net floating can be prevented. The above-mentioned various effects can be achieved in exactly the same manner even when the configuration described in claim 3 is adopted.

In particular, if the configurations described in claims 2 and 4 are adopted,
As the translucent parts (19) (19a) (19b) of the seal piece (10) border the initial English letters of the colored color inks that should be used for printing, when printing from the original plate to the printing plate,
Since it is clearly displayed as a blank state, it can be said that it is even more useful because it is possible to distinguish the color type without error even for the printing plate.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing a color patch of the present invention, and FIG.
The drawing is an enlarged cross-sectional view taken along the line 2-2 of FIG. 1, FIG. 3 is a schematic perspective view of the usage state in which the sealing piece is attached to the positive film, and FIG. 4 is the line 4-4 of FIG. FIG. 5 is a partially enlarged sectional view taken along the line, and FIG. 5 is a sectional view showing a second embodiment of the present invention corresponding to FIG. (10) …… Seal piece (11) …… Indicator coating (12) …… Shading coating (13) …… Adhesive (14) …… Separator (19) (19a) (19b) …… Translucent part

Claims (4)

[Scope of utility model registration request] 1. An index film (11) of the same color as the ink to be used for printing is applied to the surface of the seal piece (10) in a solid printing state, while the original plate is also applied to the back surface of the seal piece (10). Of the positive film (F), which has a light-shielding effect during baking from the positive film (F), and which has a coloring color different from that of the indicator film (11) is vapor-deposited, and the adhesive applied to the back surface of the light-shielding film (12). A peelable separator (14) is integrally attached to the seal piece (10) via the agent (13), and the seal piece (10) is peeled from the separator (14).
Is attached to the peripheral portion of the positive film (F) for use, and a color patch for color plate making. 2. A part of the sealing piece (10) has a penetrating light-transmitting part (19) which reaches from the index film (11) on the front surface to the light-shielding film (12) on the back surface, and 2. The color patch for color plate making according to claim 1, wherein the outline shape of the opening of the light transmitting portion (19) is formed so as to be legible as the initial English letters of the colored color ink to be used for printing. 3. An index film (11) of the same color as the ink to be used for printing is applied to the surface of the transparent seal piece (10) in a solid printing state, while the same is applied to the back surface of the seal piece (10). A light-shielding film (12) of a colored color different from the index film (11) and having a light-shielding effect when baking from the positive film (F) of the original plate to the printing plate is also applied to the solid printing state, and the light-shielding film ( A peelable separator (14) is integrally attached to the seal piece (10) via an adhesive (13) coated on the back surface of the seal piece (12), and the seal piece (10) peeled from the separator (14).
Is attached to the peripheral portion of the positive film (F) for use, and a color patch for color plate making. 4. A light-transmitting part (19) in which a part of a sealing piece (10) made of a transparent plastic film is provided so that the index film (11) on the front surface and the light-shielding film (12) on the back surface thereof correspond to each other.
a) (19b) is formed in each partition, and the partition outline shape of the translucent parts (19a) (19b) is used as the initial English letters of the colored color ink to be used for printing.
The color patch for color plate making according to claim 3, wherein the color patch is formed so as to be legible.