Patent Publication Number: US-2021169038-A1

Title: Pet absorbent sheet

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application is based on and claims priority under 35 U.S.C. § 119 from 2018-154252 filed on Aug. 20, 2018, Japanese Patent Application No. 2018-154254 filed on Aug. 20, 2018, and Japanese Utility Model Registration Application No. 2018-003202 filed on Aug. 20, 2018, the contents of which are incorporated herein by reference. 
     BACKGROUND 
     Technical Field 
     The present invention relates to a pet absorbent sheet that absorbs pet excrement, for example, urine. 
     Related Art 
     Pet absorbent sheets that absorb pet excrement, for example, urine are known (refer to Patent Literature 1 and Patent Literature 2 below). A pet absorbent sheet described in Patent Literature 1 has a liquid-impermeable back-surface sheet, a liquid-permeable top-surface sheet, and an absorbent body positioned between the back-surface sheet and the top-surface sheet. A design is provided below the top-surface sheet. The design is disposed in a grid shape throughout the entire absorbent body and is made visible through the top-surface sheet. 
     A pet absorbent sheet described in Patent Literature 2 has a liquid-impermeable back-surface sheet, a liquid-permeable top-surface sheet, and an absorbent body positioned between the back-surface sheet and the top-surface sheet. A design that is a pH discrimination portion is provided below the top-surface sheet. The design shows a footprint of a pet. The pet absorbent sheet of Patent Literature 1 is capable of enhancing decorativeness with the design showing a footprint of a pet. 
     PATENT LITERATURE 
     Patent Literature 1: Japanese Unexamined Patent Publication No. 2012-29625 
     Patent Literature 2: Japanese Unexamined Patent Publication No. 2014-68591 
     Typically, in pet absorbent sheets having a design, urine is not easily noticeable, and the urine-covering performance is enhanced compared with pet absorbent sheets having no design. In the pet absorbent sheets of Patent Literature 1 and Patent Literature 2, the urine-covering performance is enhanced throughout the entire absorbent body. 
     However, some pets discharge urine unevenly only at a certain region rather than discharge urine evenly throughout the entire region of the absorbent body. In some cases, pet absorbent sheets that have been used only partially (only in a certain region) are continuously used with the orientation changed instead of being disposed of. However, when the urine-covering performance is favorable throughout the entire absorbent body as in Patent Literature 1, there is a case where it is difficult for users to differentiate a urine-absorbed region and a non-urine-absorbed region and to identify a time for replacing the sheet. 
     SUMMARY 
     One or more embodiments provide a pet absorbent sheet that enables users to easily differentiate a urine-absorbed region and a non-urine-absorbed region and to easily identify a time for replacing the sheet. 
     A pet absorbent sheet according to one or more embodiments is a pet absorbent sheet having a thickness direction, a first direction orthogonal to the thickness direction, and a second direction orthogonal to the thickness direction and the first direction. The pet absorbent sheet includes a top-surface sheet disposed on a top-surface side; a back-surface sheet disposed on a back-surface side; an absorbent body provided between the top-surface sheet and the back-surface sheet; and colored portions that are disposed on a back-surface side of the top-surface sheet and are visible from a top-surface side of the top-surface sheet. In a region that overlaps the absorbent body, colored regions where a plurality of the colored portions is disposed and a non-colored region where the colored portions are not disposed between the colored regions in the first direction are provided, and the non-colored region is provided throughout an entire region of the absorbent body in the second direction. 
     A pet absorbent sheet according to one or more embodiments includes: a top-surface sheet disposed on a top-surface side; a back-surface sheet disposed on a back-surface side; an absorbent body provided between the top-surface sheet and the back-surface sheet; and a colored portion that is visible from a top-surface side of the top-surface sheet in a region that overlaps the absorbent body. The colored portion has a first colored portion colored with a first color with a green hue and a second colored portion colored with a second color with a purple hue. 
     A pet absorbent sheet according to one or more embodiments includes: a top-surface sheet disposed on a top-surface side; a back-surface sheet disposed on a back-surface side; an absorbent body provided between the top-surface sheet and the back-surface sheet; and a colored portion that is disposed on a back-surface side of the top-surface sheet in a region that overlaps the absorbent body and is visible from a top-surface side of the top-surface sheet. The colored portion has a pet face pattern that indicates a face of a target pet that is a target user, the pet face pattern has a first pet face pattern colored with a first color and a second pet face pattern colored with a second color that is different from the first color, and a degree of difference in color between the first color and the second color is by two or more hues in 24 color hues classified by the Ostwald hue circle. 
     A pet absorbent sheet according to one or more embodiments includes: a top-surface sheet disposed on a top-surface side; a back-surface sheet disposed on a back-surface side; an absorbent body provided between the top-surface sheet and the back-surface sheet; and a colored portion that is disposed on a back-surface side of the top-surface sheet in a region that overlaps the absorbent body and is visible from a top-surface side of the top-surface sheet. The colored portion has a pet face pattern that indicates a face of a cat that is a target user, and has no non-target pattern that indicates a pet other than the target user. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a plan view of a pet absorbent sheet according to a first embodiment as seen from an excretion surface side. 
         FIG. 2  is a schematic cross-sectional view of the pet absorbent sheet taken along a line A-A shown in  FIG. 1 . 
         FIG. 3  is an enlarged plan view of part B in  FIG. 1 . 
         FIG. 4  is a plan view of a pet absorbent sheet according to a second embodiment as seen from an excretion surface side. 
         FIG. 5  is a plan view of a pet absorbent sheet according to a third embodiment as seen from an excretion surface side. 
         FIG. 6  is a schematic cross-sectional view of the pet absorbent sheet taken along a line D-D shown in  FIG. 5 . 
         FIG. 7  is an enlarged plan view of part E in  FIG. 5 . 
         FIG. 8  is a plan view of a pet absorbent sheet according to a fourth embodiment as seen from an excretion surface side. 
     
    
    
     DETAILED DESCRIPTION 
     Embodiments of the present invention will be described herein with reference to the drawings. Those skilled in the art will recognize that many alternative embodiments can be accomplished using the teaching of the present invention and that the present invention is not limited to the embodiments illustrated herein for explanatory purposes. 
     According to one or more embodiments, a pet absorbent sheet having a thickness direction, a first direction orthogonal to the thickness direction, and a second direction orthogonal to the thickness direction and the first direction includes: a top-surface sheet disposed on a top-surface side; a back-surface sheet disposed on a back-surface side; an absorbent body provided between the top-surface sheet and the back-surface sheet; and colored portions that are disposed on a back-surface side of the top-surface sheet and are visible from a top-surface side of the top-surface sheet. In a region that overlaps the absorbent body, colored regions where a plurality of the colored portions is disposed and a non-colored region where the colored portions are not disposed between the colored regions in the first direction are provided, and the non-colored region is provided throughout an entire region of the absorbent body in the second direction. 
     Some pets may discharge urine unevenly only at a certain region (for example, one of the colored regions) rather than discharge urine evenly throughout the entire region of the absorbent body. At this time, in a different region (for example, the other colored region), urine is not discharged or the amount of urine discharged becomes small. During use, urine can be covered with the colored portions in the colored regions. In addition, at the time of replacement, one colored region where a large amount of urine is discharged and the other colored region where a small amount of urine is discharged are visually compared with each other. At this time, the colored regions are provided on both sides of the non-colored region, and one colored region and the other colored region are divided by the non-colored region. Comparison of the colored regions on both sides across the non-colored region facilitates the comparison of the colored regions on both sides. Therefore, users can easily identify whether only one colored region was used and thus the orientation needs to be changed or both colored regions were used and thus the sheet needs to be replaced. In addition, since the non-colored region where the colored portions are not disposed is provided, in the non-colored region, the trace of urine is less likely to be covered with the colored portions. Therefore, users can easily identify whether or not urine was discharged on the pet absorbent sheet. 
     According to one or more embodiments, the non-colored region may straddle a center of the absorbent body in the first direction. The non-colored region is provided at the center of the absorbent body in the first direction. The non-colored region becomes easily noticeable, and users can easily identify the non-colored region and more easily identify a time for replacing the sheet. 
     According to one or more embodiments, a length of the non-colored region in the first direction may be longer than a length of the colored portion in the first direction. Since the length of the non-colored region in the first direction is longer than the length of the colored portion in the first direction, it becomes easy to differentiate the gaps between the colored portions and the non-colored region. Therefore, it is easier to obtain an effect of dividing the colored regions on both sides with the non-colored region. 
     According to one or more embodiments, a length of the non-colored region in the first direction may be longer than a length of each colored region in the first direction Since the length of the non-colored region in the first direction is longer than the lengths of the colored regions in the first direction, it is easier to obtain an effect of differentiating the individual colored regions with the non-colored region. 
     According to one or more embodiments, in a region that overlaps the absorbent body, a second non-colored region where the colored portions are not disposed may be provided throughout an entire region of the absorbent body in the second direction on an outer side of the colored region in the first direction. On both sides across the colored region, the non-colored region and the second non-colored region are provided. The colored portions in the colored region become more easily noticeable, and the comparison between the colored regions on both sides becomes easier. 
     According to one or more embodiments, the colored portions may have a first colored portion colored with a first color and a second colored portion colored with a second color that is different from the first color, and an area ratio of the second colored portion to the first colored portion in one of the colored regions may be different from an area ratio of the second colored portion to the first colored portion in the other colored region. Since the area ratio of the second colored portion to the first colored portion differs in one of the colored regions and in the other colored region, users can differentiate one colored region and the other colored region with the difference in the configuration ratio of color, and the comparison between the colored regions on both sides becomes easy. 
     According to one or more embodiments, the colored portion in one of the colored regions and the colored portion in the other colored region disposed on an any straight line that passes through one of the colored portions and extends along the first direction may differ in terms of at least one of color or shape. 
     When comparing one of the colored regions and the other colored region, users alternately see one of the colored regions and the other colored region by moving their eyes in the first direction. At this time, since the colored portions adjacent to each other in the first direction are different, users can differentiate one of the colored regions and the other colored region with the difference in color or shape of the colored portions, and the comparison between the colored regions on both sides becomes easy. 
     A pet absorbent sheet according to one or more embodiments is a pet absorbent sheet comprising: a top-surface sheet disposed on a top-surface side; a back-surface sheet disposed on a back-surface side; an absorbent body provided between the top-surface sheet and the back-surface sheet; and a colored portion that is visible from a top-surface side of the top-surface sheet in a region that overlaps the absorbent body, wherein the colored portion has a first colored portion colored with a first color with a green hue and a second colored portion colored with a second color with a purple hue. 
     The design of Patent Literature 1 is formed of a colored or chromogenic design. Usually, in pet absorbent sheets having a design, urine is not easily noticeable, and the urine-covering performance is enhanced compared with pet absorbent sheets having no design. However, depending on the color of the design, there has been a concern that the design may be similar to the trace of urine and users may mistakenly recognize an unused pet absorbent sheet as a used pet absorbent sheet. In addition, depending on the color of the design, there has been a concern that urine and the design may be wrongly recognized and it may be impossible to enhance the urine-covering performance with the design. Therefore, one or more embodiments provide a pet absorbent sheet enabling the distinctive recognition of urine and a colored portion and the enhancement of the urine-covering performance with the colored portion. 
     The pet absorbent sheet according to one or more embodiments is configured to enable the distinctive recognition of urine and the colored portion and the enhancement of the urine-covering performance with the colored portion. Usually, the color of healthy urine has a yellow hue, and the color of unhealthy urine has a red hue. Both the first colored portion with a green hue and the second colored portion with a purple hue are easily recognized distinctively with respect to yellow hues and red hues. Therefore, it is possible for users not to recognizing the colored portion as the trace of urine mistakenly in a pre-use state of the pet absorbent sheet. In addition, users easily recognize both the color of healthy urine and the color of unhealthy urine and easily identify the healthy state and the unhealthy state. Additionally, since urine and the colored portion are easily recognized distinctively, the trace of urine is camouflaged by the colored portion, and it is possible to enhance the urine-covering performance. 
     According to one or more embodiments, the first colored portion may be a color having an R value of 0 to 128, a G value of 165 to 191, and a B value of 90 to 113 that are based on an RGB color system. All of the R value, the G value, and the B value of the first colored portion are not identical to the values of the color of urine in a healthy state and the color of urine in an unhealthy state, and the first colored portion is easily differentiated from urine. 
     According to one or more embodiments, the second colored portion may be a color having an R value of 127 to 186, a G value of 65 to 91, and a B value of 136 to 151 that are based on an RGB color system. Both the R value and the B value of the second colored portion are not identical to the values of the color of urine in a healthy state and the color of urine in an unhealthy state, and the second colored portion is easily differentiated from urine. 
     According to one or more embodiments, the colored portion may be disposed along the contour of a design, and a non-colored portion may be provided in a region surrounded by the colored portion. In a case where urine is discharged on the non-colored portion, it is possible to compare urine and the colored portion. In addition, since the colored portion is disposed to surround the non-colored portion, it is possible to identify the spread condition of urine with the colored portion. Therefore, it is also possible to identify the health states of pets by identifying the amount of urine. 
     According to one or more embodiments, the first colored portion may have a first pet pattern that indicates a pet pattern marking a pet that is a target user and a first auxiliary pattern that indicates a thing other than pets, the second colored portion may have a second pet pattern that indicates a pet pattern marking a pet that is a target user and a second auxiliary pattern that indicates a thing other than pets, in a region that overlaps the first pet pattern or a vicinity thereof, the second auxiliary pattern may be disposed, and, in a region that overlaps the second pet pattern or a vicinity thereof, the first auxiliary pattern may be disposed. Since the first pet pattern and the second auxiliary pattern are disposed close to each other, and the second pet pattern and the first auxiliary pattern are disposed close to each other, it is possible to compare urine with both the first colored portion and the second colored portion. Therefore, a healthy state and an unhealthy state are easily identified. In addition, users can identify the pet that is the target user by seeing the first pet pattern and the second pet pattern. Therefore, even in a case where there is a plurality of kinds of pets, it is easy to identify the pets that are the targets and to identify the health states of the pets that become the targets. Additionally, since the pet pattern and the auxiliary pattern are integrally provided, the designability is enhanced, and it is possible to further enhance the urine-covering effect. 
     According to one or more embodiments, a maximum dimension of the first pet pattern may be larger than a maximum dimension of the second auxiliary pattern, and a maximum dimension of the second pet pattern may be larger than a maximum dimension of the first auxiliary pattern. The first pet pattern and the second pet pattern are easily noticeable, and users can identify the pet that is the target user. Therefore, even in a case where there is a plurality of kinds of pets, it is easy to identify the pets that are the targets and to identify the health states of the pets that become the targets. 
     According to one or more embodiments, the pet absorbent sheet may have an outer peripheral colored portion that is visible from the top-surface side of the top-surface sheet in a periphery of the absorbent body, and the outer peripheral colored portion may have the first color or the second color. Since the outer peripheral colored portion has the first color or the second color, it is possible to make the first colored portion or the second colored portion noticeable with the outer peripheral colored portion. Therefore, it is possible to further enhance the urine-covering effect of the colored portions. 
     A pet absorbent sheet according to one or more embodiments is a pet absorbent sheet comprising: a top-surface sheet disposed on a top-surface side; a back-surface sheet disposed on a back-surface side; an absorbent body provided between the top-surface sheet and the back-surface sheet; and a colored portion that is disposed on a back-surface side of the top-surface sheet in a region that overlaps the absorbent body and is visible from a top-surface side of the top-surface sheet, 
     wherein the colored portion has a pet face pattern that indicates a face of a target pet that is a target user, the pet face pattern has a first pet face pattern colored with a first color and a second pet face pattern colored with a second color that is different from the first color, and a degree of difference in color between the first color and the second color is by two or more hues in 24 color hues classified by the Ostwald hue circle. 
     Users that own a plurality of kinds of pets use separate pet absorbent sheets for each kind of the pets. Specifically, a cat absorbent sheet and a dog absorbent sheet are selectively used. However, the pet absorbent sheet of Patent Literature 2 indicates the footprint of a pet, and it is difficult for users to discern whether the pet absorbent sheet is a dog absorbent sheet or a cat absorbent sheet. In addition, in a case where the footprint of a cat is indicated on a dog absorbent sheet, there is a concern that users may mistakenly recognize the target user. Therefore, there is a demand for a pet absorbent sheet that makes users easily identify the target user. 
     The pet absorbent sheet according to one or more embodiments is configured to make users easily identify the target user. With the first pet face pattern and the second pet face pattern, the decorativeness is enhanced, and it is possible to attract users&#39; attention. In addition, since the first pet face pattern and the second pet face pattern are different colors, both patterns are not integrally recognized, and it is possible to make the patterns separately noticeable. Users can easily identify the pet that is the target user by seeing the pet face patterns. 
     According to one or more embodiments, the colored portion may not have a non-target pattern that indicates a pet other than the target pet. Users can easily identify the pet that is the target user by seeing the pet face pattern. In addition, since there is no non-target pattern, even in a case where there is a plurality of pets that are the target users, it is possible to use the absorbent sheet without mistakenly recognizing the target. 
     According to one or more embodiments, the colored portion may have the pet face pattern and a non-target pattern that marks a pet other than a target user, and the number of the pet face patterns may be twice or more the number of the non-target patterns. Users can easily identify the pet that is the target user by seeing the pet face pattern. Since the number of the pet face patterns is twice or more the number of the non-target patterns, users easily recognize that the pet face pattern indicates the target, and it is possible to suppress a failure of mistakenly recognizing the target user. Even in a case where there is a plurality of pets that are the target users, it is possible to use the absorbent sheet without mistakenly recognizing the target. 
     According to one or more embodiments, a maximum dimension of the pet face pattern may be larger than a maximum dimension of the non-target pattern. The pet face pattern is more easily noticeable than the non-target pattern, and users can easily identify the pet that is the target user by seeing the pet face pattern. 
     According to one or more embodiments, a color of the non-target pattern may be different from a color of the pet face pattern disposed at a position closest to the non-target pattern, and a degree of difference in color may be by two or more hues in the 24 color hues classified by the Ostwald hue circle. Users easily recognize the pet face pattern and the non-target pattern distinctively. Users can easily identify the pet that is the target user by seeing the pet face patterns. 
     According to one or more embodiments, the pet face pattern may be a pattern that indicates a face of a cat that is a target user. Users can easily identify that a cat is the target user by seeing the pet face pattern. 
     According to one or more embodiments, the pet absorbent sheet may have a peripheral region disposed in a periphery of the absorbent body, in the peripheral region, an outer peripheral colored portion that is visible from the top-surface side of the top-surface sheet is provided, the outer peripheral colored portion has a color that is similar to the first color, and a degree of similarity in color is in an identical color hue or in a range of difference of only one hue number in the 24 color hues classified by the Ostwald hue circle. The outer peripheral colored portion and the first color pattern are integrated with each other, whereby decorativeness is enhanced, and it is possible to attract users&#39; attention. In addition, the outer peripheral colored portion and the first color pattern are integrated with each other, whereby the second color pattern is likely to become relatively noticeable. Users can easily identify the pet that is the target user by recognizing the first color pattern or the second color pattern. 
     A pet absorbent sheet according to one or more embodiments is a pet absorbent sheet comprising: a top-surface sheet disposed on a top-surface side; a back-surface sheet disposed on a back-surface side; an absorbent body provided between the top-surface sheet and the back-surface sheet; and a colored portion that is disposed on a back-surface side of the top-surface sheet in a region that overlaps the absorbent body and is visible from a top-surface side of the top-surface sheet, 
     wherein the colored portion has a pet face pattern that indicates a face of a cat that is a target user, and has no non-target pattern that indicates a pet other than the target user. 
     Users can easily identify that a cat is the target user by seeing the pet face pattern. In addition, since there is no non-target pattern that indicates a pet other than a cat, even in a case where there is a plurality of pets that are the target users, it is possible to use the absorbent sheet without mistakenly recognizing the target. 
     According to one or more embodiments, the number of the pet face patterns may be 50% or more of the total number of the patterns. Among all of the patterns, the pet face pattern is more easily noticeable, and users can easily identify the pet that is the target user by seeing the pet face pattern. 
     According to one or more embodiments, the colored portion may have an auxiliary pattern that indicates a thing other than the pet, and the number of the pet face patterns may be equal to or larger than the number of the auxiliary patterns. The pet face pattern is easily noticeable compared with the auxiliary pattern, and users can easily identify the pet that is the target user by seeing the pet face pattern. 
     According to one or more embodiments, a maximum dimension of the pet face pattern may be larger than a maximum dimension of the auxiliary pattern. The pet face pattern is more easily noticeable than the auxiliary pattern, and users can easily identify the pet that is the target user by seeing the pet face pattern. 
     According to one or more embodiments, a color of the auxiliary pattern may be different from a color of the pet face pattern disposed at a position closest to the auxiliary pattern, and a degree of difference in color may be by two or more hues in the 24 color hues classified by the Ostwald hue circle. Users easily recognize the pet face pattern and the auxiliary pattern distinctively. Users can easily identify the pet that is the target user by seeing the pet face patterns. 
     According to one or more embodiments, the pet face pattern may be a pattern that indicates an entire body of the target user including a face. The pet face pattern shows the entire body, whereby users more easily identify the target pet. Users can easily identify the pet that is the target user by seeing the pet face patterns. 
     According to one or more embodiments, the pet absorbent sheet may have a background portion that is provided in a periphery of the colored portion in the region that overlaps the absorbent body and is visible from the top-surface side of the top-surface sheet, a color of the pet face pattern may be different from a color of the background portion, and a degree of difference in color may be by two or more hues in the 24 color hues classified by the Ostwald hue circle. The pet face pattern becomes noticeable compared with the background portion, and users more easily recognize the pet face pattern. Users can easily identify the pet that is the target user by seeing the pet face patterns. 
     (2) Configuration of Pet Absorbent Sheet 
     Hereinafter, a pet absorbent sheet according to a first embodiment will be described with reference to drawings. It should be noted that, in the following description of the drawings, identical or similar portions will be given identical or similar reference signs. Here, the drawings are schematic views, and attention needs to be paid to the fact that the ratios between individual dimensions and the like are different from actual ones. Therefore, specific dimensions and the like need to be determined with reference to the following description. In addition, there may be a portion where the relationships or ratios between dimensions do not match between drawings. In the following descriptions, “pets” broadly include vertebrates and invertebrates and include typical pets such as cats, dogs, rabbits, and hamsters. The pet absorbent sheet according to one or more embodiments maybe a cat absorbent sheet. 
       FIG. 1  is a plan view of a pet absorbent sheet according to a first embodiment as seen from an excretion surface side.  FIG. 2  is a schematic cross-sectional view of the pet absorbent sheet taken along a line A-A shown in  FIG. 1 .  FIG. 3  is an enlarged plan view of part B in  FIG. 1 . The pet absorbent sheet  10  is a flat sheet as a whole. One surface of the pet absorbent sheet  10  is an excretion surface that receives pet excrement. In one or more embodiments, the surface configuring the excretion surface will be described as a top surface  101 , and a surface configuring a non-excretion surface will be described as a back surface  102 .  FIG. 2  shows a top-surface side T 1  and a back-surface side T 2  in a thickness direction T. 
     The pet absorbent sheet has a first direction D 1  and a second direction D 2  that are orthogonal to the thickness direction T. The first direction D 1  and the second direction D 2  are orthogonal to each other. The first direction D 1  and the second direction D 2  are directions that extend in the plane direction. The first direction D 1  according to one or more embodiments is the longitudinal direction in a plan view, and the second direction D 2  is the width direction orthogonal to the longitudinal direction. It should be noted that, in a modified example, the first direction D 1  may be the width direction in a plan view, and the second direction D 2  may be the longitudinal direction. 
     The pet absorbent sheet  10  has a top-surface sheet  12  that is disposed on the top-surface side T 1 , a back-surface sheet  14  that is disposed on the back-surface side T 2 , and an absorbent body  20 . The absorbent body  20  is provided between the top-surface sheet  12  and the back-surface sheet  14 . The top-surface sheet  12  may be a liquid-permeable sheet that is permeable to liquid such as pet excrement. The liquid-permeable sheet may be formed of, for example, a liquid-permeable nonwoven fabric or opening film. The back-surface sheet  14  may be a liquid-impermeable sheet that is not permeable to liquid such as pet excrement. The back-surface sheet  14  is not particularly limited and may be formed of, for example, a resin film sheet. In the back-surface sheet  14  according to one or more embodiments, the back-surface sheet  14  is entirely colored. The back-surface sheet  14  may be colored with a first color or second color described below. 
     A part of the back-surface sheet  14  extends toward the outer side more than the absorbent body  20 . The back-surface sheet  14  is visible from the top-surface side T 1 , and a colored portion of the back-surface sheet disposed in an outer peripheral portion  18  of the pet absorbent sheet  10  configures an “outer peripheral colored portion” in one or more embodiments. The outer peripheral colored portion is visible from the top-surface side of the top-surface sheet  12  in the periphery of the absorbent body. Users can see the back-surface sheet  14  positioned in the outer peripheral portion  18  through the top-surface sheet  12 . 
     The absorbent body  20  may include an absorbent core  30  and a core wrap  33  that wraps the absorbent core  30 . The core wrap  33  may include a first core wrap  33   a  that covers the top-surface side T 1  of the absorbent core  30  and a second core wrap  33   b  that covers the back-surface side T 2  of the absorbent core  30 . The absorbent core  30  is not particularly limited and may include a hydrophilic fiber layer such as pulp, a superabsorbent polymer (SAP), or a combination thereof. The core wrap  33  is not particularly limited and can be formed of, for example, liquid-permeable tissue. 
     The pet absorbent sheet  10  has colored portions  80  that are visible from the top-surface side T 1  of the top-surface sheet  12  in a region that overlaps the absorbent body  20 . The colored portions  80  are disposed on the back-surface side T 2  of the top-surface sheet  12 . The colored portions  80  according to one or more embodiments are printed on the surface of the first core wrap  33   a  on the top-surface side T 1 . It should be noted that, in a modified example, the colored portions  80  may be provided on the surface of the top-surface sheet  12  on the back-surface side, may be provided on the surface of the absorbent core  30  on the top-surface side T 1 , or may be provided on the surface on the top-surface side T 1  of a second sheet that is provided between the top-surface sheet  12  and the absorbent body  20 . 
     The colored portions  80  may include pet patterns  81  that mark a pet that is the target user and auxiliary patterns  84  that indicate a thing other than pets. The pet pattern  81  conceptually includes not only a figure that indicates the face of a pet but also a figure that indicates the body of a pet or a figure that indicates a favorite item. The auxiliary pattern  84  is a figure that indicates a thing other than pets and may be an any figure such as a heart figure or a star figure. 
     The maximum dimension of the pet pattern  81  in the first direction D 1  may be larger than the maximum dimension of the auxiliary pattern  84  in the first direction D 1 . In addition, the maximum dimension of the pet pattern  81  in the second direction D 2  may be larger than the maximum dimension of the auxiliary pattern  84  in the second direction D 2 . The pet patterns  81  are easily noticeable compared with the auxiliary patterns  84 , and users can easily identify the pet that is the target user by seeing the pet patterns  81 . Due to the pet patterns  81 , users easily recognize a cat that is the pet as the target user, and, even in a case where the target user is a plurality of pets, it is possible to suppress a failure of mistakenly recognizing the target user. 
     The number of the pet patterns  81  may be 50% or more of the total number of the patterns. Among all of the patterns, the pet patterns  81  are more easily noticeable, and users can easily identify the pet that is the target user by seeing the pet patterns  81 . In addition, the number of the pet patterns  81  may be equal to or larger than the number of the auxiliary patterns  84 . The pet patterns  81  are easily noticeable compared with the auxiliary patterns  84 , and users can easily identify the pet that is the target user by seeing the pet patterns. 
     In the region that overlaps the absorbent body of the pet absorbent sheet  10 , colored regions R 1  where a plurality of the colored portions  80  are disposed and a non-colored region R 2  where no colored portions  80  are disposed between the colored regions R 1  in the first direction D 1  may be provided. The colored regions R 1  and the non-colored region R 2  are provided throughout the entire region of the absorbent body  20  in the second direction D 2 . The non-colored region R 2  is a region where any of the colored portions  80  are not provided throughout the entire region of the absorbent body  20  in the second direction D 2 . The colored region R 1  is a region where some of the colored portions  80  are provided on an any virtual line that extends in the second direction D 2  of the absorbent body  20 . The non-colored region R 2  is sandwiched by the colored regions R 1  in the first direction D 1 . The colored regions R 1  and the non-colored region R 2  both overlap the absorbent core  30  of the absorbent body  20  in a plan view. 
     Some pets discharge urine unevenly only at a certain region (for example, one colored region R 1 ) rather than discharge urine evenly throughout the entire region of the absorbent body. At this time, in a different region (for example, the other colored region R 1 ), urine is not discharged or the amount of urine discharged becomes small During use, urine can be covered with the colored portions  80  in the colored regions R 1 . In addition, at the time of replacement, one colored region R 1  where a large amount of urine is discharged and the other colored region R 1  where a small amount of urine is discharged are visually compared with each other. At this time, the colored regions R 1  are provided on both sides of the non-colored region R 2 , and one colored region R 1  and the other colored region R 1  are divided by the non-colored region R 2 . Comparison of the colored regions R 1  on both sides across the non-colored region R 2  facilitates the comparison of the colored regions R 1  on both sides. Therefore, users can easily identify whether only one colored region R 1  was used and thus the orientation needs to be changed or both colored regions R 1  were used and thus the sheet needs to be replaced. In addition, since the non-colored region R 2  where the colored portions  80  are not disposed is provided, in the non-colored region R 2 , the trace of urine is less likely to be covered with the colored portions  80 . Therefore, users can easily identify whether or not urine was discharged on the pet absorbent sheet  10 . 
     The non-colored region R 2  may straddle a center  20 LC of the absorbent body  20  in the first direction D 1 . The non-colored region R 2  is provided at the center  20 LC of the absorbent body  20  in the first direction D 1 . The non-colored region R 2  becomes easily noticeable, and users can easily identify the non-colored region R 2  and more easily identify a time for replacing the sheet. 
     A length L 2  of the non-colored region R 2  in the first direction D 1  may be longer than a length L 80  of the colored portion  80  in the first direction D 1 . Since the length of the non-colored region R 2  in the first direction D 1  is longer than the length of the colored portion in the first direction D 1 , it becomes easy to differentiate the gaps between the colored portions  80  and the non-colored region R 2 . Therefore, it is easier to obtain an effect of dividing the colored regions R 1  on both sides with the non-colored region R 2 . It should be noted that, in a configuration having a plurality of the colored portions  80  with different dimensions, the length of the colored portion  80  having the longest length in the first direction D 1  is regarded as the length of the colored portion  80  in the first direction D 1 . The length L 2  of the non-colored region R 2  in the first direction D 1  may be longer than a length L 1  of each colored region R 1  in the first direction D 1 . Since the length L 2  of the non-colored region R 2  in the first direction D 1  is longer than the lengths L 1  of the colored regions R 1  in the first direction D 1 , it is easier to obtain an effect of differentiating the individual colored regions R 1  with the non-colored region R 2 . 
     The length L 1  in the first direction of the colored region R 1  disposed on one side of the center  20 LC of the absorbent body  20  in the first direction D 1  and the length L 1  in the first direction D 1  of the colored region R 1  disposed on the other side of the center  20 LC may be different from each other. It becomes easy to differentiate the individual colored regions R 1  and to compare the colored regions R 1  on both sides. Therefore, users can easily identify whether only one colored region R 1  was used and thus the orientation needs to be changed or both colored regions R 1  were used and thus the sheet needs to be replaced. 
     In the region that overlaps the absorbent body  20 , second non-colored regions R 3  where the colored portions  80  are not disposed throughout the entire region of the absorbent body  20  in the second direction D 2  may be provided on the outer sides of the colored regions R 1  in the first direction D 1 . On both sides across the colored region R 1 , the non-colored region R 2  and the second non-colored region R 3  are provided. The colored portions  80  in the colored regions R 1  become more easily noticeable, and the comparison between the colored regions R 1  on both sides becomes easier. 
     The length L 3  of the second non-colored region R 3  in the first direction D 1  may be shorter than the length L 1  of the colored region R 1  in the first direction D 1 . It is possible to make the colored regions R 1  noticeable, and it becomes easy for users to compare the colored regions R 1  on both sides. Therefore, users can easily identify whether only one colored region R 1  was used and thus the orientation needs to be changed or both colored regions R 1  were used and thus the sheet needs to be replaced. 
     The colored portions  80  may include a first colored portion  80 A colored with a first color and a second colored portion  80 B colored with a second color that is different from the first color. For example, the pet pattern has a first pet pattern  81 A colored with the first color and a second pet pattern  81 B colored with the second color. In addition, the auxiliary pattern  84  has a first auxiliary pattern  84 A colored with the first color and a second auxiliary pattern  84 B colored with the second color. The first colored portion  80 A has the first pet pattern  81 A and the first auxiliary pattern  84 A. The second colored portion  80 B has the second pet pattern  81 B and the second auxiliary pattern  84 B. That is, the first pet pattern  81 A and the first auxiliary pattern  84 A are colored with the same color. In addition, the second pet pattern  81 B and the second auxiliary pattern  84 B are colored with the same color. It should be noted that the first pet pattern  81 A and the first auxiliary pattern  84 A need to be mainly colored with the first color and may be partially colored with a color other than the first color. Similarly, the second pet pattern  81 B and the second auxiliary pattern  84 B need to be mainly colored with the second color and may be partially colored with a color other than the second color. The state where the patterns are colored with the main color refers to a state where 90% or more of the patterns are colored with the main color. 
     The area ratio of the second colored portions  80 B to the first colored portions  80 A in one colored region R 1  (first colored region) may be different from the area ratio of the second colored portions  80 B to the first colored portions  80 A in the other colored region R 1  (second colored region). Specifically, the colored portions including the first pet patterns  81 A and the first auxiliary patterns  84 A are regarded as the first colored portions  80 A, and the colored portions including the second pet pattern  81 B and the second auxiliary pattern  84 B are regarded as the second colored portions  80 B, and the area ratios may be compared with each other. Since the area ratio of the second colored portions  80 B to the first colored portions  80 A differs in one colored region R 1  and the other colored region R 1 , users can differentiate one colored region and the other colored region with the difference in the configuration ratio of color, and the comparison between the colored regions on both sides becomes easy. 
     Preferably, the area of the first colored portions  80 A in one colored region R 1  may be different from the area of the first colored portions in the other colored region R 1 . The total area of the first pet patterns  81 A in one colored region R 1  may be different from the total area of the first pet patterns  81 A in the other colored region R 1 , and the total area of the second pet patterns  81 B in one colored region R 1  may be different from the total area of the second pet patterns  81 B in the other colored region R 1 . Similarly, the total area of the first auxiliary patterns  84 A in one colored region R 1  may be different from the total area of the first auxiliary patterns  84 A in the other colored region R 1 , and the total area of the second auxiliary patterns  84 B in one colored region R 1  may be different from the total area of the second auxiliary patterns  84 B in the other colored region R 1 . With such a configuration, since the patterns differ in one colored region and the other colored region, users can differentiate one colored region and the other colored region with the difference in pattern, and the comparison between the colored regions on both sides becomes easy. 
     The number of the first colored portions  80 A in one colored region R 1  may be different from the number of the first colored portions  80 A in the other colored region R 1 . In addition, the number of the second colored portions  80 B in one colored region R 1  may be different from the number of the second colored portions  80 B in the other colored region R 1 . Preferably, the number of the first pet patterns  81 A in one colored region R 1  may be different from the number of the first pet patterns  81 A in the other colored region R 1 , and the number of the second pet patterns  81 B in one colored region R 1  may be different from the number of the second pet patterns  81 B in the other colored region R 1  Similarly, the number of the first auxiliary patterns  84 A in one colored region R 1  may be different from the number of the first auxiliary patterns  84 A in the other colored region R 1 , and the number of the second auxiliary patterns  84 B in one colored region R 1  may be different from the number of the second auxiliary patterns  84 B in the other colored region R 1 . With such a configuration, since the patterns differ in one colored region and the other colored region, users can differentiate one colored region and the other colored region with the difference in pattern, and the comparison between the colored regions on both sides becomes easy. 
     A colored portion in one colored region R 1  and a colored portion in the other colored region R 1  disposed on an any straight line FL that passes through one colored portion and extends along the first direction may differ in terms of at least one of color or shape. When comparing one colored region R 1  and the other colored region R 1 , users alternately see one colored region R 1  and the other colored region R 1  by moving their eyes in the first direction D 1 . At this time, since the colored portions adjacent to each other in the first direction are different, users can differentiate one of the colored regions and the other colored region with the difference in color or shape of the colored portions, and the comparison between the colored regions on both sides becomes easy. 
     Specifically, as shown in  FIG. 1 , a second pet pattern  81 B in one colored region R 1  (the colored region R 1  positioned on the lower side in  FIG. 1 ) and a second pet pattern  81 B in the other colored region R 1  (the colored region R 1  positioned on the upper side in  FIG. 1 ) are disposed on the any straight line FL 1  that extends along the first direction. These patterns are identical in color, but different in shape (the pattern on one side is a cat in a sitting state, and the pattern on the other side is a cat in a lying state). In addition, a first pet pattern  81 A in one colored region R 1  and a second pet pattern  81 B in the other colored region R 1  are disposed on an any straight line FL 2  that extends along the first direction. These patterns are different in color and also different in shape. 
     The first color and the second color need to be different colors and are not particularly limited. The degree of difference between the first color and the second color needs to be by two or more hues in the 24 color hues classified by the Ostwald hue circle. In addition, for example, the first color may be a color with a green hue, and the second color may be a color with a purple hue. That is, the first pet patterns  81 A and the first auxiliary patterns  84 A configuring the first colored portions  80 A may be colored with the first color with a green hue, and the second pet patterns  81 B and the second auxiliary patterns  84 B configuring the second colored portions  80 B may be colored with the second color with a purple hue. Usually, the color of urine discharged from pets in a healthy state exhibits a yellow hue, and the color of urine discharged from pets in an unhealthy state exhibits a red hue. Both the first colored portions  80 A with a green hue and the second colored portions  80 B with a purple hue are easily recognized distinctively with respect to yellow hues and red hues. Therefore, users easily recognize the colored portions  80  and urine distinctively, and it is possible to suppress users mistakenly recognizing the colored portions  80  as the trace of urine. Therefore, users are less likely to mistakenly recognize unused pet absorbent sheets as used pet absorbent sheets. 
     In addition, users easily recognize urine and the colored portions  80  distinctively and thus can pay attention to the colored portions  80 . It is possible to enhance the designability of the pet absorbent sheet with the colored portions  80 . In addition, the colored portions  80  are made noticeable, whereby urine is made relatively unnoticeable, and the trace of urine is camouflaged, which can enhance the urine-covering performance. 
     Here, the color of urine in a healthy state has a color having an R value of 236 to 255, a G value of 208 to 241, and a B value of 29 to 86 that are based on the RGB color system. In addition, the color of urine in an unhealthy state has a color having an R value of 213 to 223, a G value of 84 to 89, and a B value of 53 to 69 that are based on the RGB color system. The first colored portion  80 A may be a color having an R value of 0 to 128, a G value of 165 to 191, and a B value of 90 to 113 that are based on the RGB color system. All of the R value, the G value, and the B value of the first colored portion are not identical to the values of the color of urine in a healthy state and the color of urine in an unhealthy state, and the first colored portion is easily differentiated from urine. The second colored portion  80 B may be a color having an R value of 127 to 186, a G value of 65 to 91, and a B value of 136 to 151 that are based on the RGB color system. Both the R value and the B value of the second colored portion are not identical to the values of the color of urine in a healthy state and the color of urine in an unhealthy state, and the second colored portion is easily differentiated from urine. 
     These RGB values can be measured using a commercially available colorimeter. The color of the colored portion in one or more embodiments refers not to its own color of the colored sheet, but to a color visible through the top-surface sheet, and the color is measured from the top-surface side of the pet absorbent sheet at the time of measuring the RGB values. The color difference with respect to a white standard plate was measured using the first color, the second color, the color of urine in a healthy state, and the color of urine in an unhealthy state that fall within the ranges of the RGB values. The color difference refers to ΔL, Δa, and Δb of the (L*a*b*) color space with respect to the white standard plate. The measurement results are shown in Table 1. The color difference with respect to the white standard plate can be calculated by measuring the lab value of the white standard plate and the lab value of a target sample, respectively. The lab value of the white standard plate is set to zero at (X93.19, Y95.20, Z112.28). As the color difference measuring instrument, it is possible to use, for example, CR-300 manufactured by Konica Minolta, Inc., and, as the light source of the measuring machine, it is possible to use a C light source (the standard of the International Commission on Illumination (CIE)). The diameter of the measuring window of the measuring machine is 40 mm. Here, L is a value that marks brightness, and a and b are the plane coordinates of chromaticity. When the Lab value of the white standard plate is expressed as L0, a0, and b0, and the Lab value of the target sample is expressed as L1, a1, and b1, the color difference can be calculated from ΔL=L0−L1, Δa=a0−a1, and Δb=b0−b1. 
     
       
         
           
               
               
               
               
               
             
               
                   
                 TABLE 1 
               
             
            
               
                   
                   
               
               
                   
                   
                   
                 Urine in healthy 
                 Urine in unhealthy 
               
               
                   
                 First color 
                 Second color 
                 state 
                 state 
               
            
           
           
               
               
               
               
               
               
               
               
               
               
               
               
               
            
               
                   
                 Avg. 
                 Max. 
                 Min. 
                 Avg. 
                 Max. 
                 Min. 
                 Avg. 
                 Max. 
                 Min. 
                 Avg. 
                 Max. 
                 Min. 
               
               
                   
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
               
               
               
               
            
               
                 ΔL 
                 81.39 
                 82.47 
                 79.89 
                 71.47 
                 74.02 
                 70.11 
                 89.91 
                 90.61 
                 89.13 
                 87.81 
                 88.46 
                 86.89 
               
               
                 Δa 
                 −26.48 
                 −24.61 
                 −28.37 
                 11.89 
                 12.25 
                 10.92 
                 2.17 
                 2.79 
                 1.63 
                 5.62 
                 6.38 
                 5.01 
               
               
                 Δb 
                 13.73 
                 16.5 
                 12.42 
                 −8.62 
                 −7.85 
                 −9.03 
                 10.41 
                 10.99 
                 9.57 
                 7.75 
                 8.48 
                 7.16 
               
               
                   
               
            
           
         
       
     
     The colored portions  80  are disposed along the contours of designs, and non-colored portions  85  may be provided in regions surrounded by the colored portions  80 . Specifically, the pet patterns  81  are disposed along the contours of cats, and the auxiliary patterns  84  are disposed along the contours of butterflies. In the regions surrounded by the colored portions  80  that configure the contours, the non-colored portions  85  are provided. In a case where urine is discharged on the non-colored portion  85 , it is possible to compare urine and the colored portions  80 . In addition, since the colored portions  80  are disposed to surround the non-colored portions  85 , it is possible to identify the spread condition of urine with the colored portions  80 . Therefore, it is also possible to identify the health states of pets by identifying the amount of urine. 
     As shown in  FIG. 3 , in a region that overlaps the first pet pattern  81 A or the vicinity thereof, the second auxiliary pattern  84 B may be disposed, and, in a region that overlaps the second pet pattern  81 B or the vicinity thereof, the first auxiliary pattern  84 A may be disposed. Here, the state where the pattern is disposed in the vicinity refers to a state where the distance between the two patterns is 10 mm or shorter. Since the first pet pattern  81 A and the second auxiliary pattern  84 B are disposed close to each other, and the second pet pattern  81 B and the first auxiliary pattern  84 A are disposed close to each other, it is possible to compare both the first colored portion  80 A and the second colored portion  80 B with urine. Therefore, a healthy state and an unhealthy state are easily identified. 
     In addition, users can identify the pet that is the target user by seeing the first pet patterns  81 A and the second pet patterns  81 B. Therefore, even when there is a plurality of kinds of pets, pets that are the targets are easily identified. Even in a case where the color of urine in a healthy state or the color of urine in an unhealthy state differs for each of the pets that are the targets, it is easy to appropriately identify the health state of each pet by identifying the pet that becomes the target. 
     Additionally, since the pet pattern  81  and the auxiliary pattern  84  are integrally provided, the designability is enhanced, and it is possible to further enhance the urine-covering effect. Preferably, a distance L 13  between a first conglomerate that is the combination of the first pet pattern  81 A and the second auxiliary pattern  84 B and a second conglomerate that is the combination of the second pet pattern  81 B and the first auxiliary pattern  84 A may be made longer than a distance L 11  between the first pet pattern  81 A and the second auxiliary pattern  84 B and made longer than a distance L 12  between the second pet pattern  81 B and the first auxiliary pattern  84 A. It becomes easy to recognize the first conglomerate that is the combination of the first pet pattern  81 A and the second auxiliary pattern  84 B and the second conglomerate that is the combination of the second pet pattern  81 B and the first auxiliary pattern  84 A, and it is possible to integrate the pet pattern  81  and the auxiliary pattern  84 . 
     The maximum dimension of the first pet pattern  81 A may be made larger than the maximum dimension of the second auxiliary pattern  84 B, and the maximum dimension of the second pet pattern  81 B may be made larger than the maximum dimension of the first auxiliary pattern  84 A. The first pet pattern  81 A and the second pet pattern  81 B are easily noticeable, and users can identify the pet that is the target user. Therefore, even when there is a plurality of kinds of pets, it is easy to identify the pets that are the targets and to identify the health states of the pets that become the targets. 
     An outer peripheral colored portion  87  has the first color or the second color. Since the outer peripheral colored portion  87  has the first color or the second color, it is possible to make the first colored portions  80 A or the second colored portions  80 B noticeable with the outer peripheral colored portion  87 . Therefore, it is possible to further enhance the urine-covering effect of the colored portions  80 . 
     Next, a pet absorbent sheet  10 X according to a second embodiment will be described based on  FIG. 4 .  FIG. 4  is a plan view of the pet absorbent sheet according to the second embodiment as seen from an excretion surface side. It should be noted that, in the description of the second embodiment, the same configuration as in the first embodiment will not be described again by giving the same reference sign. 
     Colored portions  80 X of the second embodiment have pet patterns  811 , but have no auxiliary patterns. Users can easily identify a pet that is the target user by seeing the pet patterns  811 . In addition, since there are no auxiliary patterns, it is possible to make the pet patterns  811  noticeable, and it is easy to make the target user recognized. 
     The pet pattern  811  has a first pet pattern  811 A colored with a first color and a second pet pattern  811 B colored with a second color. The first pet pattern  811 A and the second pet pattern  811 B are patterns that are painted not only in the contour but also in the entire inside. The pet patterns are more likely to be noticeable, and it becomes easy for users to compare colored regions on both sides. Therefore, users can easily identify whether only one colored region was used and thus the orientation needs to be changed or both colored regions were used and thus the sheet needs to be replaced. 
     Next, a pet absorbent sheet  10 Y according to a third embodiment will be described based on  FIG. 5  to  FIG. 7 . It should be noted that, in the following description of the third embodiment, the same configuration as in the above-described embodiment and the second embodiment will not be described again by giving the same reference sign.  FIG. 5  is a plan view of the pet absorbent sheet according to the third embodiment as seen from an excretion surface side.  FIG. 6  is a schematic cross-sectional view of the pet absorbent sheet taken along a line D-D shown in  FIG. 1 .  FIG. 7  is an enlarged plan view of part E in  FIG. 5 . Colored portions  80 Y of the pet absorbent sheet  10 Y may have pet face patterns  86  that indicate the face of a pet that is the target user and auxiliary patterns  84  that indicate a thing other than pets. The pet face pattern  86  needs to include at least a figure that indicates the face of the pet and may include a figure that indicates the body of the pet. Therefore, the pet face pattern  86  may be a pattern that also serves as the pet pattern  81  marking the pet that is the target user or may be a different pattern. The auxiliary pattern  84  is a figure that indicates a thing other than pets and may be an any figure such as a heart figure or a star figure. 
     The colored portions  80 Y may have a first colored portion  80 A colored with a first color and a second colored portion  80 B colored with a second color that is different from the first color. For example, the pet face pattern  86  has a first pet face pattern  86 A colored with the first color and a second pet face pattern  86 B colored with the second color. In addition, the auxiliary pattern  84  may have a first auxiliary pattern  84 A colored with the first color and a second auxiliary pattern  84 B colored with the second color. The first colored portion  80 A has the first pet face pattern  86 A and the first auxiliary pattern  84 A. The second colored portion  80 B has the second pet face pattern  86 B and the second auxiliary pattern  84 B. That is, the first pet face pattern  86 A and the first auxiliary pattern  84 A are colored with the same color. In addition, the second pet face pattern  86 B and the second auxiliary pattern  84 B are colored with the same color. It should be noted that the first pet face pattern  86 A and the first auxiliary pattern  84 A need to be mainly colored with the first color and may be partially colored with a color other than the first color. Similarly, the second pet face pattern  86 B and the second auxiliary pattern  84 B need to be mainly colored with the second color and may be partially colored with a color other than the second color. The state where the patterns are colored with the main color refers to a state where 90% or more of the patterns are colored with the main color. 
     With the first pet face pattern  86 A and the second pet face pattern  86 B, the decorativeness is enhanced, and it is possible to attract users&#39; attention. In addition, since the first pet face pattern  86 A and the second pet face pattern  86 B are different colors, both patterns are not integrally recognized, and it is possible to make the patterns separately noticeable. Users can easily identify the pet that is the target user by seeing the pet face patterns. In addition, the pet face patterns may indicate the face of a cat that is the target user. Users can easily identify that a cat is the target user by seeing the pet face pattern. 
     The colored portions  80 Y may not have a non-target pattern that indicates pets other than the target pet. The pets other than the target pet are, in a cat absorbent sheet, pets such as dogs, rabbits, and hamsters that are pets other than a cat. The pattern conceptually includes not only the face of the pet, but also a figure that indicates a part of the body of the pet or a favorite item. Since there is no non-target pattern, even when there is a plurality of pets that are the target users, it is possible to use the absorbent sheet without mistakenly recognizing the target. 
     The pet face pattern may be a pattern that indicates the entire body of the target user including the face. The pet face pattern shows the entire body, whereby users more easily identify the target pet. Users can easily identify the pet that is the target user by seeing the pet patterns. 
     The number of the pet face patterns  86  may be 50% or more of the total number of the patterns. Among all of the patterns, the pet face patterns  86  are more easily noticeable, and users can easily identify the pet that is the target user by seeing the pet face patterns  86 . In addition, the number of the pet face patterns  86  may be equal to or larger than the number of the auxiliary patterns  84 . The pet face patterns  86  are easily noticeable compared with the auxiliary patterns  84 , and users can easily identify the pet that is the target user by seeing the pet face patterns. 
     The maximum dimension of the pet face pattern  86  may be larger than the maximum dimension of the auxiliary pattern  84 . For example, the maximum dimension in the first direction D 1  may be larger than the maximum dimension of the auxiliary pattern  84  in the first direction D 1 . In addition, the maximum dimension of the pet face pattern  86  in the second direction D 2  may be larger than the maximum dimension of the auxiliary pattern  84  in the second direction D 2 . The pet face patterns  86  are easily noticeable compared with the auxiliary patterns  84 , and users can easily identify the pet that is the target user by seeing the pet face patterns  86 . Due to the pet face patterns  86 , users easily recognize the cat that is the target user, and, even in a case where the target user is a plurality of pets, it is possible to suppress a failure of mistakenly recognizing the target user. 
     The first color and the second color need to be different colors and are not particularly limited. The degree of difference between the first color and the second color needs to be by two or more hues in the 24 color hues classified by the Ostwald hue circle. In addition, for example, the first color may be a color with a green hue, and the second color may be a color with a purple hue. That is, the first pet face patterns  86 A and the first auxiliary patterns  84 A configuring the first colored portions  80 A may be colored with the first color with a green hue, and the second pet face patterns  86 B and the second auxiliary patterns  84 B configuring the second colored portions  80 B may be colored with the second color with a purple hue. Usually, the color of urine discharged from pets in a healthy state exhibits a yellow hue, and the color of urine discharged from pets in an unhealthy state exhibits a red hue. Both the first colored portions  80 A with a green hue and the second colored portions  80 B with a purple hue are easily recognized distinctively with respect to yellow hues and red hues. Therefore, users easily recognize the colored portions  80 Y and urine distinctively, and it is possible to suppress users mistakenly recognizing the colored portions  80 Y as the trace of urine. Therefore, users are less likely to mistakenly recognize unused pet absorbent sheets as used pet absorbent sheets. 
     In addition, users easily recognize urine and the colored portions  80 Y distinctively and thus can pay attention to the colored portions  80 Y. It is possible to enhance the designability of the pet absorbent sheet with the colored portions  80 Y. In addition, the colored portions  80 Y are made noticeable, whereby urine is made relatively unnoticeable, and the trace of urine is camouflaged, which can enhance the urine-covering performance. 
     The pet absorbent sheet  10 Y may include a background portion  88  that is provided in a periphery of the colored portions in the region that overlaps the absorbent body and is visible from the top-surface side of the top-surface sheet. The background portion  88  is a portion not provided with the colored portions  80 Y. The background portion according to one or more embodiments is formed of the top surface of the absorbent body and is white. The color of the pet face pattern needs to be different from the color of the background portion. The degree of difference in color is by two or more hues in the 24 color hues classified by the Ostwald hue circle. The color of the background portion is different from both the first color and the second color of the pet face patterns. The pet face patterns become noticeable compared with the background portion, and users more easily recognize the pet patterns. Users can easily identify the pet that is the target user by seeing the pet face patterns. 
     The colored portions  80 Y are disposed along the contours of designs, and the background portion  88  may be provided in a region surrounded by the colored portions  80 Y. Specifically, the pet face patterns  86  are disposed along the contours of cats, and the auxiliary patterns  84  are disposed along the contours of butterflies. In the region surrounded by the colored portions  80 Y that configure the contours, the background portion  88  is provided. In a case where urine is discharged on the background portion  88 , it is possible to compare urine and the colored portions  80 Y. In addition, since the colored portions  80 Y are disposed to surround the background portion  88 , it is possible to identify the spread condition of urine with the colored portions  80 Y. Therefore, it is also possible to identify the health states of pets by identifying the amount of urine. 
     As shown in  FIG. 7 , in a region that overlaps the first pet face pattern  86 A or the vicinity thereof, the second auxiliary pattern  84 B may be disposed, and, in a region that overlaps the second pet face pattern  86 B or the vicinity thereof, the first auxiliary pattern  84 A may be disposed. Here, the state where the pattern is disposed in the vicinity refers to a state where the distance between the two patterns is 10 mm or shorter. Since the first pet face pattern  86 A and the second auxiliary pattern  84 B are disposed close to each other, and the second pet face pattern  86 B and the first auxiliary pattern  84 A are disposed close to each other, it is possible to compare both the first colored portion  80 A and the second colored portion  80 B with urine. Therefore, a healthy state and an unhealthy state are easily identified. In addition, users can identify the pet that is the target user by seeing the first pet face patterns  86 A and the second pet face patterns  86 B. Therefore, even in a case where the there are a plurality of kinds of pets, pets that are the targets are easily identified. 
     Additionally, since the pet face pattern  86  and the auxiliary pattern  84  are integrally provided, the designability is enhanced, and it is possible to further enhance the urine-covering effect. Preferably, a distance L 23  between a first conglomerate that is the combination of the first pet face pattern  86 A and the second auxiliary pattern  84 B and a second conglomerate that is the combination of the second pet face pattern  86 B and the first auxiliary pattern  84 A may be made longer than a distance L 21  between the first pet face pattern  86 A and the second auxiliary pattern  84 B and made longer than a distance L 22  between the second pet face pattern  86 B and the first auxiliary pattern  84 A. It becomes easy to recognize the first conglomerate that is the combination of the first pet face pattern  86 A and the second auxiliary pattern  84 B and the second conglomerate that is the combination of the second pet face pattern  86 B and the first auxiliary pattern  84 A, and it is possible to integrate the pet face pattern  86  and the auxiliary pattern  84 . 
     The color of the auxiliary pattern  84  is different from the color of the pet face pattern  86  disposed at the position closest to the auxiliary pattern  84 , and the degree of difference in color needs to be by two or more hues in the 24 color hues classified by the Ostwald hue circle. In  FIG. 7 , the pet face pattern  86  disposed at the position closest to the second auxiliary pattern  84 B is the first pet face pattern  86 A, and the pet face pattern  86  disposed at the position closest to the first auxiliary pattern  84 A is the second pet face pattern  86 B. Users easily recognize the pet patterns and the auxiliary patterns distinctively. Users can easily identify the pet that is the target user by seeing the pet face patterns. 
     The maximum dimension of the first pet face pattern  86 A may be made larger than the maximum dimension of the second auxiliary pattern  84 B, and the maximum dimension of the second pet face pattern  86 B may be made larger than the maximum dimension of the first auxiliary pattern  84 A. The first pet face pattern  86 A and the second pet face pattern  86 B are easily noticeable, and users can identify the pet that is the target user. 
     The outer peripheral colored portion  87  may have a color similar to the first color. The degree of similarity in color is in an identical color hue or in a range of difference of only one hue number in the 24 color hues classified by the Ostwald hue circle. The outer peripheral colored portion and the first color pattern are integrated with each other, whereby decorativeness is enhanced, and it is possible to attract users&#39; attention. In addition, the outer peripheral colored portion and the first color pattern are integrated with each other, whereby the second color pattern is likely to become relatively noticeable. Users can easily identify the pet that is the target user by recognizing the first color pattern or the second color pattern. 
     Next, a pet absorbent sheet  10 Z according to a fourth embodiment will be described based on  FIG. 8 .  FIG. 8  is a plan view of the pet absorbent sheet according to the fourth embodiment as seen from an excretion surface side. It should be noted that, in the description of the fourth embodiment, the same configuration as in the above-described embodiments will not be described again by giving the same reference sign. 
     Colored portions  80 Z of the fourth embodiment have pet face patterns  861  and non-target patterns  83  and have no auxiliary patterns. The non-target patterns  83  are figures that indicate a dog that is a pet other than the target user. Specifically, the non-target patterns include a figure that indicates a whole dog and a figure that indicates a born that dogs like. The number of the pet face patterns  86  may be twice or more the number of the non-target patterns  83 . Users can easily identify the pet that is the target user by seeing the pet face pattern. Since the number of the pet face patterns is twice or more the number of the non-target patterns, users easily recognize that the pet face pattern indicates the target, and it is possible to suppress a failure of mistakenly recognizing the target user. Even when there is a plurality of pets that are the target users, it is possible to use the absorbent sheet without mistakenly recognizing the target. 
     The maximum dimension of the pet face pattern  86  may be larger than the maximum dimension of the non-target pattern  83 . The pet face patterns  86  are more easily noticeable than the non-target patterns  83 , and users can easily identify the pet that is the target user by seeing the pet face patterns  86 . 
     The color of the non-target pattern  83  is different from the color of the pet face pattern  86  disposed at the position closest to the non-target pattern  83 , and the degree of difference in color needs to be by two or more hues in the 24 color hues classified by the Ostwald hue circle. Users easily recognize the pet face patterns  86  and the non-target patterns  83  distinctively. Users can easily identify the pet that is the target user by seeing the pet face patterns  86 . 
     The pet face pattern  861  has a first pet face pattern  861 A colored with a first color and a second pet face pattern  861 B colored with a second color. The first pet face pattern  861 A and the second pet face pattern  861 B are patterns that are painted not only in the contour but also in the entire inside. The pet face patterns become more noticeable. 
     According to one or more embodiments, the pet absorbent sheet enables users to easily differentiate a urine-absorbed region and a non-urine-absorbed region and to easily identify a time for replacing the sheet. 
     Although the disclosure has been described with respect to only a limited number of embodiments, those skilled in the art, having benefit of this disclosure, will appreciate that various other embodiments may be devised without departing from the scope of the present invention. Accordingly, the scope of the invention should be limited only by the attached claims. 
     REFERENCE SIGNS LIST 
       10 ,  10 X,  10 Y,  10 Z: Pet absorbent sheet,  12 : top-surface sheet,  14 : back-surface sheet,  20 : absorbent body,  30 : absorbent core,  33 : core wrap,  80 ,  80 X,  80 Y,  80 Z: colored portion,  80 A: first colored portion,  80 B: second colored portion,  81 ,  811 : pet pattern,  81 A,  811 A: first pet pattern (first colored portion),  81 B,  811 B: second pet pattern (second colored portion),  84 : auxiliary pattern,  84 A: first auxiliary pattern (first colored portion),  84 B: second auxiliary pattern (second colored portion),  86 ,  861 : pet face pattern,  86 A,  861 A: first face pet pattern (first colored portion),  86 B,  861 B: second face pet pattern (second colored portion),  88 : background portion, R 1 : colored region, R 2 : non-colored region, R 3 : second non-colored region, T: thickness direction, T 1 : top-surface side, T 2 : back-surface side, D 1 : first direction, D 2 : second direction