MXPA98006615A - Method of color printing by cylinder and product using an improved detection of defective records - Google Patents

Abstract

The present invention relates to a method of printing multi-color images on pressure sensitive labels carried on a web or coil, characterized in that the printing of a marking of area on the web or coil for each printing color, each marking is the same size and shape as the other brands, printing the marks one on top of the other in the same location so that they are aligned and superimposed when the colors are in register and the mark of any color which is defectively registered, amplifying and observing the superimposed marks and adjusting the impression according to the overlapping marks observed

Description

METHOD OF COLOR PRINTING BY CYLINDER AND PRODUCT USING AN IMPROVED DETECTION OF RECORDS DEFECTIVE Field of the invention The present invention relates to the field of color printing and more particularly to the printing of labels for products for hair dyeing, which uses a rotogravure printing per cylinder (roller) BACKGROUND OF THE INVENTION There is a need for accurate recording of the images in color printing using the rotogravure process of the cylinder (roller). For example, consumer products are very often provided to consumers packed in a cardboard box (thin cardboard) or a container made of some other rigid or flexible material. The packaging may have an image that illustrates the product, the use of the product, or some other image proposed to promote the sale of the product. In particular, many Ref.028009 cosmetic products, such as hair dye sets (hair coloring kits) and hair shampoo, are packaged in cardboard boxes (thin cardboard) and other containers. Cardboard boxes are often printed with a color image that shows a model that has the hair color which the hair dye is designed to produce. Such cardboard boxes are printed using a sheet or sheet feed printing process, which can be expensive and can cause inventory problems. Commercially it is important that the image is both pleasant and accurate. Some of the most common problems to achieve an accurate and pleasant image are the following: • The skin tones of the model are not natural, but instead are faded, when compared to the natural image used as a reference ( "comparison print") ie the skin tones are too red or not uniform. • Hair color is not an exact representation of the color which is desired to be produced by the game for hair dyeing. • There is a lack of consistency of the images, so that an image on a cardboard box of a print run, when displayed on a storage shelf following a cardboard box of the same print run or of a different, it will not correspond or it will be the same in its appearance. Poor quality of the image is understandably reflected negatively in the consumer's purchasing decision, especially in the field of hair color where the consumer should observe an impression or exact image of the color that is desired to be obtained by the treatment of the hair. To obtain an acceptable printed image on the cardboard boxes of the hair dyeing sets, it has been necessary to print using a sheet feed printing process and print on bleached white cardboard of the highest quality called "SBS" (Sulphate) paperboard. Bleached Solid). Such SBS paperboard, however, is generally expensive compared to lower grades of cardboard, such as paperboard that uses reprocessed paper, for example, "newsprint loaded with clay". In addition, in some countries SBS paperboard is not available and a lower quality cardboard should be used, leading to a lower quality image. The SBS cardboard used in the manufacture of cardboard boxes for prior art cosmetics, especially cardboard boxes for games for coloring the hair, which require high quality images, is provided to the printer in the form of sheets (for example, For example, cardboard of 0.91 m by 1.83 m (3 feet by 6 feet) and by 9.08 kg (20 pounds) are printed using a sheet feeding process, a large amount (500 to 2000 sheets) of such sheets. SBS cardboard are loaded into a current reservoir over the printer and are fed individually to the printer, which comprises several rolls for transporting the sheet and printing cylinders to deposit the process inks and the coating inks. The high quality of the printed image, required for these cartons for cosmetic products, significantly limits the printing speed for the SBS sheets (typically from about 30 to about 50 sheets per minute). The SBS cardboard must be fed to the printer in a certain orientation, due to the direction of the grain of the cardboard, and after it is printed, it is cut by a die to form a blank piece of cardboard. This may limit the ability of the designer to maximize the use of the sheet for the carton and thereby minimize the waste areas between the cartons.

Printed cardboard blanks are shipped flat to several plants, worldwide, and kept in inventory. When necessary, the pieces in cardboard rough, flat, are folded in cardboard boxes, and the product is placed inside. There may be more than 40 shades or shades of hair dyes in a product line. A manufacturer can have more than 10 product lines and therefore may have to manufacture and inventory more than 400 different types of cardboard boxes, that is, more than 400 different images and texts. As a result, more than 400 different types of cardboard boxes must be kept in inventory and shipped to numerous plants, many of which may be in foreign countries. It is very expensive to manufacture, ship and maintain a complete inventory of hundreds of different types of cardboard boxes in a global distribution network. In addition, cardboard boxes, during the course of time, can absorb moisture and become unusable. It is very expensive to print "short runs", that is, from 10,000 to 100,000 cardboard boxes. But since there are many types of cardboard boxes, many short runs are required for printing. Consequently, the cost of SBS cardboard boxes can be a significant portion of the manufacturing cost of the hair dye set.

Printed labels are frequently used in packaging, which can be difficult or expensive to print directly on the package. For example, beer, wine and other glass bottles use printed labels, which are attached to the bottles, making it difficult to print them in color on the glass. Printed adhesive labels are also used on cardboard boxes, plastic bottles and other containers. However, in these cases the quality of the printed image is not critical, that is, there is no attempt to obtain an exact reproduction of a hair tone which is uniform from one print lot to the next or within The lots. The labels are usually, and in general, of various types. A type of label is a sheet of paper which is printed on a face or surface. An adhesive can be applied to the unprinted face of the label on a labeling machine just before the label is pressed against a container. Another type of label uses a single layer web or coil, without a weft or support web, which is printed to form a plurality of images (labels). The labels are cut from the weft or coil in a separate operation and applied to the container by means of an adhesive. Another type of labeling system, called "pressure sensitive labels", consists of a lower support web or coil (releasable coating), generally of a low quality of paper stock, plastic film or hybrid material, and the label itself, which can be of a high quality raw material of paper. The label is part of a top layer of the weft or coil. The label is printed on one side (front face) and has a pressure sensitive adhesive (permanent or removable) on its opposite face (back face). The pressure sensitive adhesive retains the label on the weft or support coil and a releasable coating on the weft or support coil allows the label to be removed. The label is removed from the web or support coil, usually by the machine and then pressed on the product or container, usually by the same machine. The term, when used herein, as "pressure sensitive label" refers to a label held removably on a weft or web of support by a pressure sensitive adhesive and which is capable of being printed, removed from the web or support coil, and pressed on a container. The printing of such pressure sensitive labels can be effected by various printing methods. The preferred method is rotogravure printing on a continuous weft or web using the conventional four-color process, possibly with additional color inks. The four-color printing process uses four printing cylinders which are inked, respectively, with process yellow inks (transparent), process magenta, cyan or process blue green and process black. You can add color lines or coating colors using other colors of printing inks, for example, black and gold coating inks. Gravure is a rotating (coil) process in which the cells are etched to form cells on the surface of the print cylinder to form the area of the image. The surface of the cylinder is flooded with ink, the area of the image that holds the ink inside the cells, is cleaned by scraping off the excess ink, that is, using a scraper blade, and then pressed directly on the paper, transferring the ink to paper. Chemical etching is done in the form of tiny cells, typically 22,500 cells / inch2 (3,487 cells / cm2) (eg, 250 cells per line of inch); however, more cells per inch can be used and the cells can vary in depth to provide a variation in ink capacity. The coil printing process is at high speed, at least 3,048 meters (10,000 feet) per hour. The preferred coil printing process is rotogravure; however, gravure and offset printing (rotocalcographic), as well as other types of cylinder printing (rollers), are within the terms "printing to roll" and "printing by cylinders". The use of a continuous web or coil, instead of a flat sheet, is a relatively inexpensive method in which the product is a roll of pressure sensitive labels on a web or support coil. The label roll is adapted to be used in an automatic label application machine which applies the labels to a cardboard box cut by die or other container. In the process of the present invention it is critical that the printing of each cylinder, or plate, be exactly (registered) aligned on the label to obtain an accurate and natural image. Any faulty registration can lead to an image whose color is inaccurate or which is blurred in detail. The labels with images that show a model for cosmetic products, especially the images that show a hair for the games for coloring the hair, have not been used because of the difficulty of obtaining a high quality image and of the exact image when the Label printing is carried out in a high speed web or coil (of more than 3,048 meters (10,000 feet) linear per hour). If there is any defective registration, even for a width of the hair, the hair shadow of the model may be inaccurate or the image of the hair may be blurred. The web or paper web is processed through a printer by receiving rollers which pull the web or web from a supply roller. Any variation in the printing conditions, including variations in temperature, humidity, roll pull speed and / or tension, may cause the light movement of the weft or coil away from its intended path. Such light movements of the weft or coil, which slightly distort the images, can be cumulative through the course of processing a complete web or coil, leading to visible degradations on the printed labels. For example, if a run of 10,000 labels is going to be printed and the tiny defective records are cumulative, the image on the first label at the start of the run will not correspond or will not be the same as the images on the labels of the middle part or the end of the run. If the labels are applied to the cardboard boxes, and the labels that are not the same are at the end on a collateral shelf, the differences in the tone and / or the color of the hair can be appreciable for a consumer. This consumer may be confused as to the actual hair color that he sees or may perceive that the product is inferior because his packaging is not uniform. Because hair dyeing games, in some cases, are impulse-bought items, a potential customer who still subliminally perceives an inconvenience because of a substandard image on the package can buy a competitor's product. It is already known, in the prior art of rotogravure printing, to print a set of square edges on the margin of the upper face of the weft or coil and then to print different squares of color within the edges. Each square is printed with an ink color, which identifies the position (registration) of each color printing cylinder. The position of the square of color in relation to its edges and the other squares, is read by an operator and a reader (video-amplifier) and its data are entered into the computer that controls the printer. further, the required tension is printed on the margin of the frame or coil using a bar code. The voltage is adjusted based on a system of load cells connected to the control computer. The operator and the computer adjust the receiving rollers on each cylinder, or cylinders, to achieve the exact required position of the frame or coil. In general, such adjustment is effected by a slight movement, in the range of millimeters, of the rollers or cylinders in the direction of their axes. This control of the position of the weft or reel is critical to the ability of the printer to register or accurately match each of the printing cylinders. However, some faulty registration may occur even when the multiple square system is used, because it is difficult to immediately detect, and correct, the defective records. An alternative method for detecting color registration is described in U.S. Pat. No. 4,546,700, incorporated for reference. In this method a series of ring-like area marks, black, are printed on the margin of a frame or coil, each of the marks are the same. Each color is printed as a block, on its own black mark. The extent of each hole in the black mark that is covered by a block of color is measured, using a reflectometer, to determine the color registration.

Brief Description of the Invention In accordance with the present invention there is provided a method and product for the printing of images, especially images on the pressure-sensitive labels applied to the containers of the hair care products, in which the images (the images of the hair ) are exact in hue and color. The images are without print variations due to tiny defective records in the printing process. The present method and apparatus, which detects and corrects defective color records, does not involve any increase in cost or complexity in the printing process. It is based on the overprint (overlay) of the different colors in an area, with each color that is printed using a mark, and the marks preferably are of the same size and shape.

Preferably, the marks are discs (round, solid color marks). The marks can be very small, for example, in the range of 0.1-1.0 mm and preferably approximately 0.1 mm or 0.2 mm in diameter, when they are integrated into an image. Alternatively, the markings may be printed on the margins of the upper layer of the weft or coil, and are preferably 0.1-1.0 mm in diameter and are less than 1.0 mm in diameter. Since one of the colors is black, and the other of the colors is printed in alignment with the black disk, if the colors are registered the composite mark appears as a unique black disk. However, if one or more colors are registered defectively, each color registered defectively appears as a semicircle which extends beyond the black disk. The color, extension, and direction of the defective record is immediately displayed, using a video amplifier, by the color, size, and direction of the semicircle. Preferably the markings of the present invention are small compared to the size of the color squares of the prior art, which can be 0.5-1 cm on each side. The markings of the present invention are amply amplified, by the video amplifier, compared to the amplification of the color squares of the prior art, for example, a mark of 0.2 mm in diameter (disc-stain), on an image or on a different area of the image, it is amplified at least 400X and more preferably approximately 1000X to 2000X, which is much larger compared to the amplification of the color squares of the prior art.

If the video amplifier displays an image of the composite mark on a 13-inch (diagonal) monitor, the composite mark is printed on the margin of a screen or coil and is 1 mm in diameter, the size of the resulting image on The video amplifier monitor is approximately 10 cm (3.9 inches) and the amplification is approximately 1000X. The preferred amplification range is 400-10,000X and is at least 4OOX. The images are printed on labels, called here "labels printed by coil", which are printed using a printing process to coil, for example, a process of printing by cylinders (rollers) and the labels are formed on a roll or roller . For example, the coil (roll) can be a single layer of paper or plastic which is printed, on its front face (top), and then cut into individual labels. Preferably, however, the labels printed on the reel are pressure sensitive labels carried on a paper or plastic support web or reel. The term "roll" refers to both single-layer and multiple-layer types of printed labels. Preferably, the labels are of high gloss, preferably glossy or semi-glossy paper with high level of whiteness, in the range of 22.7-36.32 kilograms (50-80 pounds) and more preferably high gloss paper, golden, white. Alternatively, the images can be printed on a transparent or translucent plastic film which is cut to form pressure sensitive labels. The use of a high quality paper or plastic film allows the images to be more natural than those that are obtainable when they are printed on cardboard, even when the cardboard is a high quality cardboard. The labels can be stamped. You can use small copies of the labels, the size of the postal stamp, on storage shelves for the identification of the products. The term "container", as used herein, refers to any form or configuration of the package to contain a product therein and includes both primary and secondary packaging. A primary package is a container which is in direct contact with the product, for example, a glass or plastic bottle which contains a composition for dyeing the hair. A secondary package contains one or more primary packages therein, for example, a cardboard or plastic box containing one or more primary packages therein. In oxidative hair dyeing, the secondary packaging typically contains a first lotion container for dyeing the hair and a second container of a peroxide color developer, the content of these containers is mixed at the instant in which they are to be used. . Secondary packaging for such products is often referred to as sets or sets. The use of printed labels to coil, printed separately, for example, pressure-sensitive labels printed to coil, allow an image of a model, with the color accuracy required for hair coloring products, to be used on a wide variety of primary and secondary packaging, including packaging on which it is not possible or economically feasible to directly print an exact color image. The labels, after printing, are shipped to several plants for the final application, by the machine, to the containers. For example, the containers can be SBS (Bleached Solid Sulphate) cartons, or lower quality cardboard, and lower cost, than the SBS cardboard. The cardboard boxes can be made of reprocessed paper and preferably the cardboard for the cardboard boxes can be recycled cardboard paper loaded with clay in the gauge range of 14-22 points. Cardboard boxes ÍS they can be purchased locally, which saves the cost of boarding. Preferably the printing of the cardboard of the box is by a printing process to coil, which has cost advantages compared to the printing of sheet feed. Cardboard can be printed with the text, such as instructions, product ingredients, etc., and lower quality images, which have a density range below 2.0. The raw material of the cardboard can be a roll that is fed as a raster or coil to the coil printer, that is, by offset or rotogravure. Such coil printing is at high speed, of more than 3,048 meters (10,000 feet) linear per hour. This can be done faster, and consequently more economically, than a sheet-fed printing process. Since the products can be distinguished by the labels, and not by the printing on the cardboard boxes, it is only necessary to have an inventory of different labels. The cardboard boxes, for each product line, are the same, regardless of which label is applied. It is less expensive to maintain an inventory of, for example, 40 different types of labels, than an inventory of 40 different types of cardboard. More importantly in terms of cost, cardboard boxes are "generic or general" (used for many colors to dye hair). Such generic cartons are preferably printed from "long run" card rolls (of at least 300,000 and preferably more than 1,000,000). Large print runs, which use roll printing, can lead to a carton price that is one third, or less, than the cost of the cardboard boxes with the color image of the printed hair using short runs. The use of pressure sensitive labels allows several improvements which are not possible simply with printing on a cardboard box. In one embodiment, a layer of high gloss aluminum sheet is interposed between the label layer and the adhesive layer. The area of the face of the model, on an image, is cut by a die and can be lifted completely, for example, it is removable by detaching it separately. The customer can then use the aluminum foil, under the area of the face or surface removed, like a mirror. She can see her own face framed by printed hair to contemplate what her appearance might look like with the hair color illustrated on the label. As another example, you can print labels which are miniatures (small size) and which duplicate the regular size labels that are attached to the boxes of the product. These miniature labels can be used on the front of the shelves to identify the products displayed on the shelves. The container can be a clear plastic box and the label can be printed on its sides both front and back. An image, or text, on the back of the label can be seen by looking through the plastic container. Also a label can be applied on a portion of the other label which is adhered to a container.

Brief Description of the Drawings In the accompanying drawing, Figures 1-3 are images of a product for dyeing the hair which shows models having three different hair colors. The colors are related (family of color) and consist of the tone or shade of No. 02 (Figure 1), No. 6 (Figure 2), and No. 10 (Figure 3); Figure 4 is a top plan view of three strips of labels on their wefts or coils; Figure 5 is an enlarged top plan view showing the lower portion of two pressure sensitive labels and two markings used to determine color registration; Figure 6 is an enlarged top plan view of a plurality of color discs used for registration, and printed on the margin of a weft or support coil, the discs show that colors are recorded correctly; Figure 7 is an enlarged top plan view of the color discs as in Figure 5, but with one of the discs that is registered in a slightly defective manner; Figure 8 is an enlarged top plan view of the color discs, as in Figure 6, but showing that the two colors are poorly registered; and Figure 9 is a top plan view of the color discs, as in Figure 6, but showing that a color is recorded excessively defective; and Figure 10 is a top plan view showing portions of two labels and showing three sets of registration marks superimposed.

Detailed description of the invention It is difficult to obtain good consistent color quality of the printed images because of color control problems, mainly related to process limitations, process variability and communication, that is, between the printing company and the advertising agency. The color inks used in the four-color printing process, called "process inks", are the primary subtractive pigmented ink colors of blue green (process blue), magenta (process red) and yellow, in the company of the process black. Each color process ink is a transparent printing ink designed to absorb approximately one third of the visible spectrum and transmit two thirds. The paper reflects the light and the absorption portions of the inks thereof. In general, a halftone screen fragments or divides the colored images into tiny spots or spots. A 150-line screen has 150 x 150 dots or spots (22,500) in one square inch. For example, red is obtained by printing points or spots of magenta color (adsorbs green) and yellow spots or spots (adsorbs blue) leaving only the red reflected from the paper.

Since color is obtained by the reflection of the paper, its surface smoothness and other characteristics are important in the quality of the printed image. Often the packaging of hair dye uses an image of a human model. However, human flesh is a "memory color" (color of psychological reference) which is a regularly observed color that people tend to remember better. It is difficult to obtain a reproduction of the impression which is as close as possible to the color of the flesh. In general, the better the quality of the paper, in terms of brightness and smoothness, the greater the density range that is obtainable. "Density" is the ability of a material to absorb light and is inversely proportional to the amount of light reflected from a surface. An original transparency can have a density range (from luminous to shaded) of 2.70 (a measurement made by a densitometer). A four-color reproduction (high-quality image) on high-quality glossy paper and a good ink has at least a density range of 2.00. However, on uncoated paper, such as some types of paperboard, the maximum density range may be only 1.70 or less. A lower density range leads to compression of the tone so that the image appears to be squashed (low quality printed subject matter). When the quality of the paper becomes less, the saturation of the color will also be reduced. The use of a paper label or a plastic film label carried on a plot or paper reel and printed in color while it is on the web or reel, allows more flexibility in the selection of paper or film quality. plastic that is being printed on the cardboard. The quality of the paper (grade of paper) affects the number of lines of the screen per inch (the number of spots or spots per inch) that can be used; the size of the spots or spots in light conditions, intermediate shades and shading; the tone scale; the contrast; the balance of grays and saturation. A paper with a hard, smooth surface will produce whiter light conditions (reflects more light to the observer's eyes). The shaded areas will be glossy, because the ink will tend to stay on the surface, which will increase the density of the shadows and increase the saturation of the color. Lower quality papers with a rougher texture and a more absorbent surface will generally produce lower quality color reproductions.

In the printing of labels on a frame or coil the material of the frame or coil is under tension. A "stretch", which is the distortion of the paper size, can occur in the direction of the transverse grain (the direction of the fibers that corresponds to the direction in which the paper of the weft or coil is made). Stretching can cause color registration problems. The direction of the transverse grain expands and contracts when the paper of the weft or coil responds to humidity, temperature and pressure. Stretching can also cause registration problems. In addition, changes in moisture content can lead to "swelling of the fiber," which is a dilation or swelling of certain fibers in the paper. This causes changes in the paper surface and degrades the image. The use of cardboard as the printing surface can allow more cases of swelling of the fiber than printing labels on high quality paper or plastic film. These problems are mainly solved, in the present invention, by using high-quality glossy paper or a plastic film for the labels and immediately detecting the defective registration and correcting such defective registration by controlling the position of the weft or coil during printing.

The basic tension on the web or coil is measured by load cells on the first and last cylinders and is set or adjusted by a bar code which has been printed on the margin of the web or coil. If the registration of any one or more of the colors being printed is imperfect, for example, due to the longitudinal movement of the weft or coil, the printed image may be blurred and / or the colors may be out of register. As shown in Figures 5-8, color registration is obtained by print test marks which overlap and exactly align (juxtaposition), if a correct record exists. Preferably the shape of the mark is a disc, although other shapes, such as squares, can be used. Figure 6 illustrates a correct color registration. Since one or more of the color inks is black, the disk 50 will be black. If a four-color process is used, disk 50 consists of a blue-green disk, a magenta disk, a yellow disk and a black disk printed one on top of the other in any order. If more color inks are used they will also be printed on disc-shaped marks on the top of the disc in Figure 6.

As shown in Figure 7, a color, for example, greenish blue, is incorrectly registered and appears as a semicircle 51 which extends beyond disk 50. Its color, and the address and extension of the defective record, is immediately apparent from the color, size and direction of the semicircle 51. In Figure 8 two colors are registered defectively and appear as two semicircles 51 and 52. In this example the semicircle 51 indicates a defective registration in the longitudinal direction and the semicircle 52 indicates a defective record in the latitudinal direction. In Figure 9 the semicircle 53 is of the same color (blue-green) as the half-circle 51 and is out of register. It is in the same (longitudinal) direction as in Figure 7 but this defective registration is larger than in Figure 6. The overlapping markings are preferably very small, less than 1 mm in diameter (largest width dimension) and in the range from 0.1 mm to 1.0 mm. Preferably the superimposed labels are enlarged extensively using a conventional video amplifier, which allows a faster response to the defective register. This amplification is at least 400 (400X) and more preferably is in the range of 1000X-2000X.

In one embodiment (not illustrated) the superimposed marks of the present invention are within a printed image on each label. A careful review of an image can show a satisfactory position for superimposed marks where a black spot surrounded by a white area could be observed as a natural part of the image. This black spot can be used as the overlapping color marks 50 (Figures 6-9). Alternatively, overlapping color marks can be printed on the upper layer of a weft or coil outside the image area. For example, in the case of pressure-sensitive labels which are removed by cutting an upper layer of a weft or coil, the overlapping marks are preferably printed on the upper outer layer of the edges of the labels. Preferably, at least three sets of overlapping color marks are associated with each label. As shown in Figure 10, the label 13 is formed on the upper layer 55 of a weft or coil 59. The weft or coil comprises a weft or support coil (support layer) and the upper layer 55. Three sets of overlapping color marks 56-58 are associated with the label 13. Each superimposed mark 56-58 consists of a mark for each of the colors that is printed. Overlapping marks 56-58 are outside the limit of label 13, preferably in the margins below the label, above the label and between the label and the next label. The quality of the paper label is preferably high gloss, white paper, and more preferably high gloss, gold paper, in the range of 22.7 kg (50 pounds) to 36.32 kg (80 pounds). The plastic film is preferably a transparent or translucent plastic film of 5.08 mm to 10.16 mm (2 to 4 mils) in thickness and may be polyester, polyethylene or other suitable polymer. The quality of the cardboard can be SBS or cardboard recycled from newspaper loaded with clay (CNN) and is in the range of 14-22 points. Figures 1, 2 and 3 indicate the ingenious or subtle variations in shades between three shades of hair dye in a color family. A "color family" is a plurality of colors for dyeing hair that has common shades and hues of color, for example, black, brown, red, blond. These three examples are the closest hair dyes, in shading tonality, in a color family. It is important that the color images of the hair are exactly the same in the totality of the labels of the same product. The displacement of the images during a run, which leads to a visible distortion of the images, is not acceptable. However, during a run several labels can be rejected, under a quality control program, for several reasons. For example, the response time of the control system may have been too slow, leading to too much ink or too little ink. The hair image is not a simple block of color, like the blocks of color displayed on a can of paint or on a container of cosmetic powder for the face. The hair image is complex and involves shading shades, which are nuances and shadows as well as internal differences in hue, hue and brightness. If exactly the same hair image is not maintained, the client may not be able to distinguish the related products in the same color family, that is, she may not be able to distinguish the product from Figure 1 (shading number 02) ) of the product of Figure 2 (shading number 06). The differentiation between the images on different products must also be kept constant, that is, the apparent difference between the same images on the products of Figures 1, 2 and 3 must be the same without taking into account where, either in the plot or coil, or in the run, the labels are selected. As shown in Figure 4, the frames or coils 10-12 each carry a series of pressure sensitive labels 10a, 10b, 10c ... lOn; lia, llb, 11c ... lln; 12a, 12b, 12c ... 12n, where n is frequently less than 100,000. For example, labels lOa-lOn have the image of Figure 1; the labels lla-lln have the image of Figure 2; and the labels 12a-12n have the image of Figure 3. Each image on the weft or coil is exactly the same for the eye, ie, 10a is the same color image of the hair, in hue, hue and brilliance, that the image on the label lOn. Consequently, there will be a uniform difference in appearance so that the differences between the images as between the labels 10a, lia and 12a will be the same differences as between the labels lOn, lln and 12n. The colors of the hair dye of the labels on the weft or coils 10-12 are related in color; they are an element of the same color family. In general, a colored family, such as the blond, has 5 or 6 shades; although a color family can have as many as 10 colors. The labels are printed using a printing process by roll with cylinder (roller), preferably rotogravure. The printing is at a printing speed of the normal web or coil and is at least 3,048 meters (10,000 feet) per hour. A considerable saving of money is obtained by applying the labels to generic cartons, or to other containers, which are produced and printed with the text, etc., (without the color image of the hair in long or large runs (at least 300,000 and preferably more than 1,000,000) using a coil printing process Such containers produced in long or large runs are referred to herein as "generic containers." Modifications may be made to the present invention within the scope of the claims. the overlapping marks can be triangular, rectangular or ring.

It is noted that in relation to this date, the best method known to the applicant to carry out the aforementioned invention, is that which is clear from the present description of the invention.

Having described the invention as above, property is claimed as contained in the following

Claims (51)

1. A method for the improved registration in the color printing of images, in which a plurality of cylinders print a multiple color image on a web or coil, characterized in that in the printing of an area mark on the web or coil for each print color, each mark is the same size and shape as the other marks, printing the marks one on top of the other in the same location so that they are aligned and superimposed when the colors are in register and the mark of any color on the which is registered defectively extends beyond the markings of the incorrectly registered colors, amplifying and observing the overlapping marks and adjusting the impression according to the overlapping marks observed.

2. A method according to claim 1, characterized in that the marks are geometric shapes that have boundaries or external edges, the outer limits coincide with the colors are in register or exact correspondence.

3. A method according to claim 1, characterized in that the marks are printed inside the image.

4. A method according to claim 1, characterized in that the marks are discs.

5. A method according to claim 4, characterized in that a defectively registered color disc extends as a semicircle beyond the correctly registered discs.

6. A method according to claim 1, characterized in that the register of the colors is adjusted to bring a defectively registered color to a register.

7. A method according to claim 1, characterized in that three sets of overlapping marks are printed on the frame or coil.

8. A method according to claim 1, characterized in that the web or coil is a multilayer web or coil that includes an upper layer having pressure sensitive labels printed in color and areas outside the labels and the overlay is printed. on an external area of the labels.

9. A method according to claim 1, characterized in that the marks are less than 1 mm in diameter.

10. A method according to claim 9, characterized in that it exhibits the marks during the printing of the images on a video amplifier with an amplification of at least 400X and adjusting the registration of the colors based on the displayed marks so that a mark of a defectively registered color is carried in superposition.

11. A packaging method, characterized in that it comprises the following steps: (a) forming a multilayer web or coil comprising an upper layer having a series of pressure sensitive labels and a backing layer; the labels are of a high quality paper, white, or a plastic film; (b) print the color ink marks for each color that is printed, the marks are printed on the top layer and the marks are printed on the same spot or spot so that they are coincident, superimposed and aligned when the colors they are registered or are in exact correspondence, and a color mark is outside the matching forms of the other marks if their color is defectively registered; (c) printing the labels using a printing process of the weft or coil, each label having a color image of the shading tone of the exact hair; (d) displaying an amplified image of the printed markings using a video amplifier and adjusting the registration of the colors to the colors registered defectively correct, based on the amplified image; (e) produce a long or large run of more than 300,000 generic containers; (f) remove the labels from the web or coil and apply the labels to the generic containers; and (g) filling the containers with a product.

12. A method according to claim 11, characterized in that the shading shades of the hair are on a color image of at least a portion of a hair.

13. A method according to claim 11, characterized in that the container is made from cardboard boxes printed on solid bleached sulphate (SBS) card stock.

14. A method according to claim 11, characterized in that the containers are cardboard boxes printed on a reel of recycled cardboard.

15. A method according to claim 11, characterized in that the containers are bottles.

16. A method according to claim 11, characterized in that the containers are made of plastic.

17. A method according to claim 11, characterized in that the product is a dye for the hair, the dye is in a bottle, and the bottle is inside the container.

18. A method according to claim 11, characterized in that the marks are of a geometric shape that has the same size and shape, and each mark has an external limit, the external boundaries of the marks coincide when the colors are in register or exact correspondence .

19. A method according to claim 11, characterized in that the marks are discs.

20. A method according to claim 19, characterized in that a color disc recorded erroneously extends as a semicircle beyond the correctly registered discs.

21. A method according to claim 11, characterized in that the marks are less than 1 mm in diameter.

22. A method according to claim 21, characterized in that it exhibits the marks during the printing of the images on a video amplifier with an amplification of at least 400X.

23. A method according to claim 11, characterized in that the marks are printed on the image.

24. A method according to claim 11, characterized in that the marks are printed on the upper outer layer of the labels.

25. A method according to claim 11, characterized in that three sets of marks are printed externally to each label.

26. A method according to claim 11, characterized in that the printing of the labels is done by rotogravure printing.

27. A packaging for a cosmetic product, the packaging has a very high quality image illustrating the effect produced by the cosmetic product and a density range of at least 2.0, the package is characterized in that it comprises: (a) a blank piece of cardboard having an image of not very good quality, and (b) a label printed on a coil, of a plastic film or of high quality white paper, fixed adhesively to the blank piece of cardboard and having printed on it a high quality image; the blank piece of cardboard is selected from a plurality of blank pieces of cardboard obtained from a supply of cardboard raw material, the images of not very high quality are printed on the blank pieces, and the label is selected from a plurality of labels obtained from a high-speed four-color coil printer, which forms very high quality images on a web or coil, in such a printer: (i) a colored ink mark related to a plurality of other trademark color ink is printed in the superimposed position on the other marks and then they are observed to determine their registration; and (ii) the registration of the colors is adjusted to correct the defective registration of the trademark in relation to the other trademark, for which the accuracy of the high quality image is maintained, the high quality image for each trademark present on The weft or reel is essentially reproducible in exact manner when compared to a comparison print and when compared to the labels of another weft or reel for the same cosmetic product.

28. The package according to claim 27, characterized in that the marks are of the same size and of the same shape.

29. The package according to claim 27, characterized in that the blank piece of cardboard is of a large or long run of at least 300,000 pieces of cardboard blank of the generic container.

30. The package according to claim 27, characterized in that the blank pieces of cardboard are printed in a coil printing process at more than 3,048 meters (10,000 feet) per hour.

31. The package according to claim 27, characterized in that the pressure-sensitive labels are present on a support frame or coil and are removable by detaching them from it.

32. The package according to claim 27, characterized in that the marks are printed on the high quality image.

33. A process by product, of a product for hair dyeing packaged in a container, the process is characterized in that it comprises the following steps: (a) forming a first multilayer weft or coil and a second multilayer weft or coil with a series of pressure sensitive labels removably attached to the top layer of each web or coil; labels are made of high quality white paper or plastic film; (b) print a color ink mark, of each color that is printed on the top layer of each weft or coil, the marks are of the same size and shape, the marks are printed one on top of the other so that they are superimposed and coincide in the size, shape and position if the colors are registered and do not coincide in the position if a color is registered defectively; and read the position of the marks one in relation to the other to determine the registration of the colors; (c) adjust the registration of colors if any color is defectively registered; (d) printing the labels on an engraving process with cylinder-coil, each label having a color image of at least a portion of a hair that has exact shading tones of the hair, with the color of the hair that is the color that is desired to be produced by the hair dye product; (e) produce a long or large run of more than 300,000 generic containers; (f) remove the labels from the frames or coils and apply the labels to the generic containers; and (g) filling the containers with dyeing products; the product produced by the process of steps (a) - (g) is a series of generic containers some of which have labels of the first frame or coil adhered to them and others of which have labels of the second frame or coil adhered to them, the color of the hair is an element of a color family of shades or nuances closely related, the labels of the first frame or coil exhibit a hair color of the family of color and the labels of the second plot or coil exhibit their closest related hair color of the same color family; wherein there is a uniform difference in appearance for an observer of the hair image between any two randomly selected labels from the first and second frames or coils.

34. A process per product according to claim 33, characterized in that the generic containers are cardboard boxes printed with a coil, solid bleached sulphate board (SBS).

35. A process per product according to claim 33, characterized in that the generic containers are cardboard boxes printed on a reel, of recycled cardboard.

36. A process per product according to claim 33, characterized in that the marks are discs.

37. A process per product according to claim 33, characterized in that the containers are bottles.

38. A process per product according to claim 33, characterized in that the hair product is a dye, the dye is in a bottle and the bottle is inside the container.

39. A process per product according to claim 33, characterized in that the containers are made of plastic.

40. A process per product according to claim 33, characterized in that the labels are applied to the labels which are adhered to the containers.

41. A process per product according to claim 33, characterized in that the marks are printed on the image.

42. A plurality of webs or coils, characterized in that each has a series of labels printed on a roll, the labels are adapted to be applied to the product containers, each label has an image of at least a portion of a hair, each pattern or coil has printed on it a plurality of registration marks of a selected shape, each mark has an outer edge or boundary with a mark for each color which is printed to form the image, the marks are of the same shape and are printed and superimposed in the same location; so that if the colors are in register, the edges or boundaries of the marks coincide, but if a color is defectively registered, the edge or boundary of its mark extends beyond the edges or boundaries of the color marks. which are in registry.

43. A plurality of webs or coils according to claim 42, characterized in that the containers are large or large run, printed, coil-shaped containers of a production run of more than 300,000 containers.

44. A plurality of webs or coils according to claim 42, characterized in that the labels are pressure sensitive labels and the webs or coils are multilayer webs or coils.

45. A plurality of webs or coils according to claim 42, characterized in that the product is a product for coloring the hair and the image exhibits a hair of the color and shade shading that is desired to be produced by the product to 'color the hair .

46. A plurality of frames or coils according to claim 42, characterized in that the marks are discs.

47. A plurality of webs or coils according to claim 42, characterized in that the product is a bottle of a hair dye and the bottle is inside the container.

48. A plurality of webs or coils according to claim 42, characterized in that the labels are adapted to be applied to other labels which have been applied to the containers.

49. A plurality of webs or coils according to claim 42, characterized in that the labels have a printed front face and a back face and the labels are cut from the web or coil and applied with adhesive to the back side thereof.

50. A method for manufacturing a label, characterized in that it comprises the following steps: (a) forming a multilayer web or coil comprising an upper layer having a series of pressure sensitive labels and a backing layer; (b) print color ink marks for each color that is printed, the marks are printed on the top layer and the marks are printed at the same point so that they are coincident, superimposed and aligned when the colors are registered, and a color mark is outside the coinciding forms of the other marks if its color is defectively registered; (c) printing labels using a coil printing process, each label includes a high quality image that has a density range of at least 2.0; and (d) displaying an amplified image of the printed markings using a video amplifier and adjusting the registration of the colors to correct the defectively recorded colors based on the amplified image.

51. A label, characterized in that it is made by the process of claim 50. 10 15 20 25