233 results about "Thermal paper" patented technology

The invention discloses an intelligent management method for liquidation receipts based on multi-modal data fusion, and particularly relates to the field of data analysis. Comprising the steps of S1, multispectral data acquisition in a limited illumination environment, S2, cross-modal feature decoupling and recombination, S3, space-time heterograph neural network analysis, S4, multi-scale attention decision fusion, S5, resistance enhancement verification, and S6, incremental management based on knowledge distillation. According to the method, the physical anti-counterfeiting capability is remarkably improved, the paper material, the ink components and the surface structure are deeply analyzed through a multispectral sequence acquisition mechanism, and hidden tampering behaviors such as color fading and chemical altering of the thermo-sensitive paper are accurately identified. Cross-modal deep correlation analysis is achieved in a breakthrough mode, a physical-semantic decoupling technology and a space-time heterogeneous graph network are adopted for modeling, and non-dominant laws such as commodity position offset and tax rate anomaly are effectively captured.

The invention discloses a thermal-sensitive paper coating quality image recognition method, system and device and a medium, and relates to the technical field of thermal-sensitive paper coating quality recognized.The method comprises the following steps that an image obtaining scene is established, and a light-transmitting image of to-be-detected thermal-sensitive paper is obtained based on the image obtaining scene and marked as a thermal-sensitive paper light-transmitting image; judging whether the distribution range of the gray values of all the pixel points in the detection gray-scale map is abnormal or not, and if yes, marking the detection gray-scale map as an initial abnormal gray-scale map; judging whether the middle area of the to-be-detected thermo-sensitive paper corresponding to the initial abnormal grey-scale map is sunken or not, and if not, sending out a coating abnormal signal of the to-be-detected thermo-sensitive paper; the method is used for solving the problems that the identification efficiency is low and the obtained overall thermal-sensitive paper coating qualification rate is inaccurate due to the fact that a dynamic color development instrument and a thermal printer are used for detecting the coating quality in an existing thermal-sensitive paper coating quality identification technology.

The invention relates to the technical field of thermo-sensitive paper processing, and discloses a reel thermo-sensitive paper slitting device and a slitting method.The reel thermo-sensitive paper slitting device comprises a base, two supporting plates are fixedly connected to the top of the base, a guide roller is rotationally connected between the two supporting plates, a frame plate is arranged between the two supporting plates, and a control mechanism is arranged on the frame plate. Through the design of a control mechanism, after slitting and winding are completed, a frame plate is controlled to rotate by 90 degrees, a winding roller is pushed out of a mounting base in a first electric push rod stretching mode, and the upper and lower different first electric push rods are further separately and independently controlled to stretch out and draw back; a winding drum moving channel at the top or the bottom can be formed outside the winding roller, so that feeding or discharging is rapidly carried out, after feeding is completed, the two contact plates are directly controlled to move oppositely, a winding drum can be clamped, stable development of winding work is guaranteed, excessive manual participation is not needed in the operation process, more convenience is achieved, and manpower is saved.

The invention discloses an electronic lottery system based on an electronic signature and process data storage technology, and relates to the technical field of lottery systems. Comprising a lottery buyer betting client which receives betting information (lottery types, period numbers and number selection schemes) of lottery buyers through a standard betting control, generates a betting order containing a timestamp and a dynamic information code (a two-dimensional code / bar code, and the time efficiency is 60 seconds), and synchronously collects user real-name authentication information and betting behavior data (operation time and number selection records). A thermo-sensitive paper bill is replaced by the electronic certificate, so that the problem of certificate damage caused by environmental factors is avoided; by combining the electronic signature and the block chain evidence storage technology, tampering-free evidence storage of the voucher hash value is realized, counterfeiting and tampering risks are effectively prevented, and awarding disputes are reduced.

The invention discloses a thermo-sensitive paper rolling alignment detection method and system based on image and sensor fusion, and relates to the technical field of rolling alignment detection, and the method comprises the following steps: carrying out graying and binarization processing on a thermo-sensitive paper rolling image to obtain a rolling binary image; performing contour extraction on the rolled binary image to obtain a rolled contour image; obtaining the thickness and the width of the rolled thermo-sensitive paper based on the rolling profile diagram, and respectively marking the thickness and the width as actual thickness and actual width; based on data of the speed sensor and the angular velocity sensor, calculating to obtain the thickness of the thermal-sensitive paper which is predicted to be rolled, and marking the thickness as predicted thickness; marking the width of the thermo-sensitive paper as a predicted width; judging whether the actual thickness and the actual width are abnormal or not based on the predicted thickness and the predicted width; the method is used for solving the problem that in an existing winding alignment detection technology, only whether winding alignment exists or not is judged, and the alignment reason cannot be judged, so that the detection result is not accurate enough.

The invention discloses a simple test method for saturated light-emitting light density of low-basis-weight thermo-sensitive paper, and relates to the technical field of thermo-sensitive material detection.The simple test method comprises the steps that an undeveloped surface image of to-be-tested low-basis-weight thermo-sensitive paper is obtained, and the undeveloped surface image and initial heating parameters are input into a pre-trained generative adversarial network model; generating a predicted color developing light density distribution image corresponding to the saturated color developing state and associated initial heating parameters; and carrying out weighted normalization processing on the optical density distribution data based on thin-layer structure characteristics, and outputting a global saturated optical density value and a color rendering uniformity evaluation result. According to the method, the generative adversarial network and the multispectral imaging technology are combined, so that the optical density distribution in the saturated color development state is directly predicted from the undeveloped surface image, and the test efficiency and the measurement precision are remarkably improved.

The invention relates to the field of image processing, in particular to a thermosensitive coating defect detection method and system for thermosensitive paper, and the method comprises the steps: collecting a historical thermosensitive coating original image with defect marks; the defects are clustered, the size of the center point of any cluster serves as the size of an initial window, grid division is conducted on a thermosensitive coating grey-scale map obtained in real time, and a gray-scale co-occurrence matrix of each grid is obtained; taking any grid as a central grid, calculating the sum of differences between the central grid and the gray-level co-occurrence matrixes of all other grids in a preset neighborhood, and normalizing the sum of differences to obtain a texture difference matrix of the central grid; and calculating the probability that the grid has texture defects, calculating the integrated defect probability of pixel points in the grey-scale map, and if the integrated defect probability of the pixel points is greater than a preset threshold value, judging that the pixel points are defective pixel points. According to the invention, potential defects can be effectively detected from the thermosensitive coating image, so that the accuracy of defect detection is improved.

The invention discloses an artificial intelligence-driven thermal paper production waste intelligent identification method, and relates to the technical field of thermal paper production waste identification, and the method comprises the following steps: obtaining a first normal reference value and a second normal reference value based on a first amount of normal thermal paper drawing; obtaining an initial abnormal region based on the real-time thermo-sensitive paper graph, the first normal reference value and the second normal reference value; acquiring three-dimensional point cloud charts above and below the thermo-sensitive paper in the initial abnormal region part, and marking the three-dimensional point cloud charts as real-time point cloud charts; constructing a real-time detection angle based on the real-time point cloud atlas; acquiring a historical normal angle based on the second quantity of normal thermal sensitive paper; acquiring a normal angle reference value based on the historical normal angle; based on the real-time detection angle value and a normal angle reference value, judging whether the thermo-sensitive paper is a waste material or not; the method is used for solving the problem that in an existing thermo-sensitive paper production waste recognition technology, whether interference exists or not cannot be further analyzed to cause recognition error defects, and consequently the accuracy of thermo-sensitive paper production waste recognition is low.

The utility model discloses a paper product processing paper separating machine with an adjusting function, which belongs to the field of thermo-sensitive paper cutting equipment and comprises two side mounting plates, two tensioning and rolling mechanisms are arranged between the two side mounting plates, and the two tensioning and rolling mechanisms are arranged on the two side mounting plates. The tensioning winding mechanism comprises a motor fixedly connected to one side of the side mounting plate and a fixed disc fixedly connected to the other side of the side mounting plate, the inner ring surface of the fixed disc is rotationally connected with a rotating gear ring, one side of the inner wall of the fixed disc is rotationally connected with at least four gears, and the gears are all meshed with the rotating gear ring; the length of the fixing disc is larger than that of the rotating gear ring, at least four racks are connected to the side, away from the side mounting plate, of the fixing disc in a penetrating and sliding mode, and the thermal-sensitive paper can be prevented from being broken during rolling, the tensioning degree of the thermal-sensitive paper after rolling is guaranteed, and a worker can conveniently take down a formed thermal-sensitive paper ring.

The invention discloses a thermo-sensitive paper coating suitable for a backing-paper-free label and a preparation method and application of the thermo-sensitive paper coating, and relates to the technical field of composite materials. According to the thermal-sensitive paper coating provided by the invention, a specific thermosensitive composition is adopted to construct a color developing substance of a color developing layer, 3-(3-methylureido) phenyl-4-methyl benzenesulfonate is compounded with a specific fluorane dye, and the obtained thermosensitive composition can form a covalent bond with silicone oil, so that the silicone oil can be promoted to be cured to form a compact coating, and the thermal-sensitive paper coating has the advantages that the thermal-sensitive paper coating has a good color developing effect; and the silicone oil isolation layer and the thermosensitive composition have excellent binding force, so that the coating provided by the invention has excellent color development performance and higher curing rate, the curing time is as low as 15 seconds or less, the glossiness is 46.7 GU or more, and the dynamic saturation color development performance is 0.96 or more.

The invention discloses a thermosensitive desktop barcode printer capable of adapting to various paper widths, the device comprises a printing seat and a pressing cover, a roll paper fixing piece and a paper feeding channel are arranged in the printing seat, a Bluetooth module used for being in control connection with a computer or a mobile terminal is arranged in the pressing cover, centering positioning blocks are arranged on two sides of the top of the paper feeding channel in a sliding manner; centering positioning clamps are arranged on the outer walls of the two sides of the roll paper fixing piece in a sliding mode, synchronous driving pieces are arranged between the centering positioning blocks and the centering positioning clamps, a driving rubber roller is arranged at the outer end of the paper feeding channel, and an anti-scraping and anti-tearing paper cutter is rotationally arranged at the position, located on the outer side of the driving rubber roller, of the bottom of the gland. The distance between the two sets of centering positioning blocks and the two sets of centering positioning clamps is adjusted through the synchronous driving piece to adapt to thermo-sensitive paper of different widths, meanwhile, the anti-scraping paper tearing knife can be made to tilt when the rubber roller is driven to rotate, the phenomenon that a printed object is scratched by a sawtooth-shaped paper tearing knife edge in the printing process is avoided, and meanwhile paper clamping is avoided.

The invention discloses a two-color printing method based on a thermal printer. The two-color printing method comprises the steps that a two-color printing mode is started; performing color configuration on different types of to-be-printed information, and respectively setting the to-be-printed information as a first color and a second color; converting the character data to be printed into dot matrix data; according to the color configuration, converting the dot matrix data into double-color printing dot matrix data according to a double-color printing data encoding format; the control chip of the thermal printer separates second color printing data from the two-color printing dot matrix data, and respectively restores all the two-color printing dot matrix data and the second color printing data into 1-bit single-color printing dot matrix data; calculating the first color heating time and the second color heating time of the double-color thermo-sensitive paper according to the restored double-color printing dot matrix data and the second color printing data; and according to the first color heating time and the second color heating time, the printing head is controlled to heat the two-color thermo-sensitive paper in a time-sharing mode, and two-color printing is achieved. The printing information identification degree can be improved.

The reciprocating cutting equipment for thermo-sensitive paper production comprises a processing table top and supporting legs fixedly installed at the four corners of the bottom of the processing table top, side frames are arranged on the two sides of the processing table top, and a top frame is jointly and fixedly installed at the tops of the two side frames; the slitting and cutting machine further comprises a slitting and cutting double-end driving mechanism, an interval dynamic adjustable slitting mechanism and a cutting interval adjustable cutting mechanism. The slitting and cutting-off double-end driving mechanism is arranged at the bottom of the top frame and used for providing pressing power for the interval dynamic adjustable slitting mechanism and the cutting-off interval adjustable cutting mechanism to achieve slitting and cutting-off work. According to the thermal-sensitive paper cutting device, the distance between the cutting knives can be flexibly adjusted without frequently replacing the knives, the cutting requirements of thermal-sensitive paper with different length specifications can be conveniently met, and the problems that according to existing thermal-sensitive paper cutting equipment, the cutting distance is fixed, the cutting position is complex to adjust, and the production efficiency is low due to the fact that the knives need to be frequently replaced or debugged are solved.

The invention discloses a color receipt printing method and device, computer equipment and a readable storage medium, relates to the technical field of Internet, and provides universal color receipt printing capability by performing gradient heating treatment on thermo-sensitive paper and identifying and recording printable colors and required temperatures of the thermo-sensitive paper. And diversified and personalized printing requirements are met. The method comprises the following steps: acquiring a preset heating temperature interval, and carrying out gradient heating on currently identified thermo-sensitive paper according to the heating temperature interval to obtain a heating result; according to the heating result, determining at least one target color which can be printed and displayed by the currently identified thermo-sensitive paper, and determining a heating temperature corresponding to each target color; and in response to a color receipt printing instruction, determining a to-be-printed color, and carrying out heating printing on the currently identified thermo-sensitive paper according to a specified heating temperature corresponding to the to-be-printed color, so that the to-be-printed color is presented on the currently identified thermo-sensitive paper, and a color receipt is obtained.

The invention relates to the technical field of image processing, in particular to a thermo-sensitive paper surface smoothness detection method and system based on image processing, and the method comprises the steps that multiple sets of images of thermo-sensitive paper are collected and subjected to graying processing and contrast enhancement, and one set of images comprise a conventional image and polarized light images at all preset angles; and calculating entropy values of the polarized light images, arranging the polarized light images in a descending order according to the entropy values, selecting two maximum polarized light images from the polarized light images, and performing weighted stacking according to weights of respective entropy value proportions to obtain a final polarized light image. According to the method, the surface structure information of the thermo-sensitive paper is enhanced by using the polarized light image, and the linear regression model is established by combining the gray variance, the local contrast and the edge gradient mean value to carry out smoothness score prediction. The method has the main advantages that the detection precision is improved, subjective errors are reduced, the method is suitable for automatic production detection, and errors and damage possibly caused by a traditional contact type detection method are avoided.

The invention firstly provides a structure of environment-friendly bottomless paper type thermo-sensitive paper. The structure comprises a base material, and a thermo-sensitive coating and a silicone oil layer which are sequentially laminated on one surface of the base material, the thermosensitive coating comprises a color developing layer, a pre-coating layer and a bottom coating layer which are laminated in sequence, and the bottom coating layer is laminated on one surface of the base material; secondly, a coating system is provided, and a color developing agent comprises 4, 4 '-sulfonyl diphenol; the invention also provides a preparation method which is used for preparing the thermo-sensitive paper by adopting the structure and the coating system, and comprises the following steps: coating the color developing layer on the surface of the pre-coating layer by using curtain coating; a novel structure is designed, a basis is provided for the self-curling release performance of the thermo-sensitive paper, a coating system uses 4, 4 '-sulfonyldiphenol, so that the color saturation, the light resistance and the stability of the thermo-sensitive paper can be improved, the thermo-sensitive paper does not react with silicone oil, the release performance is improved, a curtain coating method is adopted based on the structure and the coating system, and the self-curling release performance of the thermo-sensitive paper is improved. And the coating uniformity, color development and other properties of the thermo-sensitive paper are effectively improved, and the environment-friendly thermo-sensitive paper which is fast in reaction, bright in color and high in definition during printing is integrally formed.

The utility model relates to a detection device for high temperature resistant thermo-sensitive paper, which comprises a protective support, two guide rollers are rotatably mounted at the rear end in the protective support, an adjusting mechanism is arranged at the rear end in the protective support, a cleaning mechanism is arranged in the adjusting mechanism, and the cleaning mechanism is connected with the guide rollers. A detection mechanism is arranged in the protection support, the cleaning mechanism comprises two containing bins, electrostatic flannelette rollers are rotationally installed in the containing bins, and the front electrostatic flannelette roller and the rear electrostatic flannelette roller penetrate through and extend to the opposite sides of the containing bins. According to the detection device for the high-temperature-resistant thermo-sensitive paper, through the arrangement of the cleaning mechanism, the detection mechanism and the adjusting mechanism, dust attached to the surface of the three-proofing thermo-sensitive paper can be rapidly subjected to electrostatic adhesion cleaning before visual detection, so that the situation that the surface of the three-proofing thermo-sensitive paper is blocked to affect the detection effect is avoided, and the detection accuracy is higher.

This invention discloses a thermal paper processing equipment and process, including a cylinder with a feed inlet fixedly connected to its side wall. The raw material crushing equipment allows adjustment of the angle between the bottom plate and the feed inlet by rotating a threaded bolt, thereby controlling the descent speed of the raw material on the bottom plate surface and thus controlling the length of the cut material for subsequent papermaking. During processing, the raw material is placed into the feed inlet, and then a servo motor is activated. The servo motor drives a rotating shaft to rotate, which in turn drives a first rotating column on its side wall to rotate. The first rotating column then collides with a semi-circular block, causing the semi-circular block to move a connecting rod towards the inner cavity of the feed inlet. A first spring between the semi-circular block and the cylinder is compressed, generating a rebound force that drives the blade towards the bottom plate surface, cutting the raw material on the bottom plate surface. When the first rotating column moves away from the semi-circular block, the connecting rod, semi-circular block, and blade all return to their original positions under the rebound force of the first spring.

The utility model discloses a label printer belongs to label printing technical field, and this printer includes printer casing, installation chamber, thermal paper roll, base, mounting base, connecting block, connecting block, side baffle, dust absorption net cylinder, dust absorption box, dust absorption pipeline and micro -pump, through micro -pump makes the dust absorption box place produce suction, thereby can make the dust of thermal paper roll contact mounting base outer wall inhale, and through dust absorption pipeline enter the inside of filter box and be blocked by filter core, thereby can avoid the purpose that the impurity dust of thermal paper roll surface exists and influences the imaging effect, through the pull handle, can conveniently draw out filter core and clean or replace, and through the fixed connection between dust absorption box and both sides side baffle, can make the opening of dust absorption box always face upwards, and further make the effect of dust absorption better.

The invention discloses an environment-friendly phenol-free thermo-sensitive paper label material and a preparation method thereof, and relates to the technical field of thermo-sensitive paper. When the environment-friendly phenol-free thermo-sensitive paper label material is prepared, cellulose sequentially reacts with cyanoacetic acid, 4-(2-chloroethyoxyl) benzophenone and N, N-dimethylpropyl-1-amine to prepare modified cellulose; the preparation method comprises the following steps: carrying out reaction on silicon dioxide and diethylenetriamine propyl trimethoxy silane to prepare pre-modified silicon dioxide; reacting the pre-modified silicon dioxide, phosphorous acid and formaldehyde to obtain modified silicon dioxide; uniformly mixing functional styrene-butadiene emulsion, modified cellulose, modified silicon dioxide, a color developing agent, a lubricating agent, a sensitizer and colorless pigment to prepare a thermosensitive coating; and uniformly coating the surface of thermosensitive base paper with the thermosensitive coating by using a coating machine, and drying to obtain the environment-friendly phenol-free thermosensitive paper label material. The environment-friendly phenol-free thermo-sensitive paper label material prepared by the invention has excellent wear resistance, antibacterial property, light resistance and flame retardance.

The utility model discloses a high-speed coating machine which comprises a coating structure, a protective frame is arranged at the output end of the coating structure, a leveling structure is arranged in the protective frame, a winding roller is arranged at the end, away from the coating structure, of the protective frame, and an electric heating roller is rotationally connected into the protective frame. Electric heating rods are arranged in the electric heating roller in an annular array mode. According to the high-speed coating machine provided by the utility model, the leveling structure is arranged, the thermo-sensitive paper is forwards conveyed to the lower part of the tensioning roller after being coated, the tensioning roller moves downwards through matching of the reset spring and the pushing of the crossed jacking rod, so that the thermo-sensitive paper can be tensioned, and meanwhile, the tensioning roller rotates along with the movement of the tensioning roller while the thermo-sensitive paper is conveyed; therefore, the friction force generated when the thermo-sensitive paper is pressed can be effectively reduced, and the thermo-sensitive paper can be effectively prevented from being torn due to overlarge friction force.

A control device includes: a print data acquisition unit configured to acquire print data, which is formed of a plurality of lines and indicates a coloration state of each pixel included in the plurality of lines; a head drive unit configured to supply, to a thermal head formed of a plurality of heating elements each corresponding to the pixel, an electric current for heating the thermal head for each pixel; a motor drive unit configured to supply, to a motor configured to move heat-sensitive paper relative to the thermal head, a drive current for step driving the motor for each line; a speed control unit configured to control, based on the number of colored pixels of a determination subject line among yet-to-be-printed lines of the print data, a relative moving speed of the heat-sensitive paper moved by the motor; and a preheating control unit configured to cause the head drive unit to output, when the determination subject line is a specific line being a line in which the number of colored pixels of the determination subject line exceeds a predetermined value, a preheating current being an electric current for heating the thermal head to such a degree as to prevent coloring of the heat-sensitive paper by a time the specific line is printed.

The present application relates to a kind of erasable color thermosensitive paper and its preparation method, erasable color thermosensitive paper includes protective layer, thermosensitive coating and substrate layer, thermosensitive coating includes yellow thermosensitive coating, first intermediate layer, magenta thermosensitive coating, second intermediate layer and cyan thermosensitive coating from top to bottom sequentially, yellow thermosensitive coating is equipped with the protective layer, cyan thermosensitive coating is arranged on substrate layer;Yellow thermosensitive coating, magenta thermosensitive coating, cyan thermosensitive coating between the color development temperature difference is not less than 25 DEG C;Yellow thermosensitive coating, magenta thermosensitive coating and cyan thermosensitive coating are all added with heat-conducting aid.The erasable color thermosensitive paper of the present application, heat is isolated by intermediate layer;By making the color development temperature difference of yellow thermosensitive coating, the magenta thermosensitive coating, the cyan thermosensitive coating not less than 25 DEG C, full-color printing can be realized by superimposing three colors;By adding heat-conducting aid of different particle sizes, more efficient erasing effect is obtained.

The utility model relates to the technical field of thermo-sensitive paper labels, in particular to a thermo-sensitive label for a cold chain, which comprises a protective film layer, a printing layer, a water absorption layer, a weather-proof glue layer and a release paper layer, and the water absorption layer is arranged between the printing layer and the weather-proof glue layer. A blocking adhesive tape and a reinforcing adhesive tape are adopted to ensure firm combination with a pasted object; through the cooperation of the water accumulation area and the water absorption layer, water entering the weather-proof glue layer is absorbed in the water absorption layer, and the label is prevented from falling off from a pasted object in a low-temperature and high-humidity environment; the protective film layer is arranged on the printing layer, water blocking is conducted on printed characters of the printing layer, character blurring caused by the fact that the surface of the label is affected with damp is avoided, and the actual using effect of the label is improved.

An ultra-violet radiation curable polyorganosiloxane release coating composition includes a photoacid generator and an epoxycyclohexylalkyl-functional polydiorganosiloxane. The photoacid generator includes a silylated diaryliodonium cation and a fluorinated aryl borate anion. The composition is curable via exposure to ultra-violet radiation at low temperature. The composition is useful for preparing polyorganosiloxane release coatings on thermally sensitive substrates, such as thermal paper. The composition, and the release coating made therefrom, are useful for forming linerless labels.

The application provides a heat-sensitive paper scratch resistance standard, a quality detection standard determination method, a detection method and equipment. The heat-sensitive paper scratch resistance equipment applies different pressures to a scratch head through a pressure device, cooperates with different speeds, and performs scratch resistance testing on the heat-sensitive paper under the same scratch testing material, different testing speeds and different testing pressures. The heat-sensitive paper scratch resistance quality detection method is used for detection according to the testing result. The testing method is scientific, has strong repeatability, and the testing result is stable. The quality of the product can be judged according to the testing result to determine whether the quality meets the requirements. For the unqualified product, loss can be stopped in time, and resource waste is reduced.

The heat preservation carton comprises a carton body and a carton cover, a supporting frame is installed in an opening of the carton body, a first groove of a frame-shaped structure is formed in an inner ring of the supporting frame, a first fixing frame is inserted into the first groove, a heat preservation bag is installed in the first fixing frame, and a second fixing frame is installed in the heat preservation bag. A second groove of a frame-shaped structure is formed in the position, located on the outer side of the first groove, of the supporting frame, a second fixing frame is inserted into the second groove, a heat preservation film for sealing an opening of the heat preservation bag is installed on the surface of the second fixing frame, and positioning assemblies for fixing the carton cover to the carton body are installed on the two sides of the carton cover correspondingly. The heat preservation carton is simple in structure, the heat preservation bag and the heat preservation film can be rapidly assembled through the first fixing frame and the second fixing frame, the opening of the heat preservation bag can be sealed through the heat preservation film, the internal heat preservation effect is improved, the carton cover does not need adhesive tape, and the carton cover and the carton body can be rapidly connected and fixed through the inserting block.

The present invention relates to a two-color thermosensitive erasable paper based on the design of chromogenic agent matching and a preparation method thereof, and relates to the technical field of printing consumables. The two-color erasable thermosensitive paper includes a thermosensitive coating, and the thermosensitive coating includes a red thermosensitive coating and a black thermosensitive coating arranged in sequence from top to bottom. The chromogenic temperature difference between the red thermosensitive coating and the black thermosensitive coating is greater than 30 °C; the components of the red thermosensitive coating include a low-temperature chromogenic agent and an erasing aid I; the components of the black thermosensitive coating include a high-temperature chromogenic agent and an erasing aid II. Through the structural matching design of the low-temperature chromogenic agent in the red thermosensitive coating and the high-temperature chromogenic agent in the black thermosensitive coating, the chromogenic temperature difference between different thermosensitive coatings is realized to achieve color overlay; combined with the erasing aid, its efficient erasing is realized.

The present invention relates to a double-layered, two-color erasable thermal paper and a preparation method thereof, and relates to the technical field of printing consumables. The two-color erasable thermal paper of the present invention comprises a protective layer, a thermal coating, and a substrate arranged in sequence from top to bottom; the thermal coating comprises a red thermal coating and a black thermal coating arranged in sequence from top to bottom. The red thermal coating comprises the following raw materials: a color developer A, a red thermal dye, a cosolvent A, an erasing aid A, an epoxy resin adhesive, a polyamide curing agent, and a zinc oxide filler; the black thermal coating comprises the following raw materials: a color developer B, a black thermal dye, a cosolvent B, an erasing aid B, an epoxy resin adhesive, a polyamide curing agent, and a zinc oxide filler. The two-color erasable thermal paper of the present invention has a high color density, does not overlap and bleed after repeated erasure, can be completely erased, and can be repeatedly erasable.

The utility model relates to the technical field of flatness detection and correction equipment, and discloses flatness detection and correction equipment for thermo-sensitive paper, which comprises a detector body, the surface of the detector body is hinged with a touch display screen through a hinge, the back surface of the touch display screen is fixedly connected with a supporting assembly, and the supporting assembly is fixedly connected with the detector body. The bottom of the supporting assembly is rotatably connected with a movable seat, the interior of the movable seat is in threaded connection with a pushing assembly, the top surface of the detector body is sleeved with four groups of sockets, fixed sleeves are inserted into the sockets, and the interiors of the fixed sleeves are slidably connected with telescopic assemblies. According to the flatness detection and correction equipment for the thermo-sensitive paper, through the arrangement of the supporting assembly and the pushing assembly, the effect of adjusting the angle of the touch display screen is achieved, an operator can check information on the screen more easily, visual fatigue caused by a poor visual angle is reduced, and the comfort and adjustability of the flatness detection and correction equipment for the thermo-sensitive paper are improved.