A thermal head of the present disclosure includes a substrate, a heat-generating portion, electrodes, and a protective layer. The heat-generating portion is located on the substrate. The electrodes are located on the substrate and are connected to the heat-generating portion. The protective layer covers the heat-generating portion and parts of the electrodes. A skewness Rsk of the protective layer is larger than 0. Further, A thermal head of the present disclosure includes a substrate, a heat-generating portion, electrodes, and a protective layer. The heat-generating portion is located on the substrate. The electrodes are located on the substrate and are connected to the heat-generating portion. The protective layer covers the heat-generating portion and parts of the electrodes. A kurtosis Rku of the protective layer is larger than 3.

[Object] To provide a thermal head with which a substrate is not likely to become broken.

[Solution] A thermal head X1 includes a substrate 7 having a first main surface 7f and an end surface 7e adjacent to the first main surface 7f; a plurality of heating elements 9 disposed on the first main surface 7f or on the end surface 7e; a plurality of electrodes disposed on the first main surface 7f and electrically connected to the plurality of heating elements 9; a first covering layer 27a disposed on parts of the plurality of electrodes; a connector 31 disposed adjacent to the end surface 7e and including a plurality of connector pins 8 disposed on the plurality of electrodes and a housing 10 containing the plurality of connector pins 8; and a covering member 12 covering the plurality of connector pins 8 on the plurality of electrodes together with the plurality of electrodes. The thermal head further includes a second covering layer 27b extending from the first covering layer 27a onto the end surface 7e. The housing 10 is in contact with the second covering layer 27b. Thus, the probability of breakage of the substrate 7 can be reduced.

[Object] To provide a thermal head that can reduce the probability of breakage of a connector.

[Solution] A thermal head X1 includes a substrate 7; a plurality of heating elements 9 disposed on the substrate 7; a plurality of electrodes disposed on the substrate 7 and electrically connected to the plurality of heating elements 9; a connector 31 disposed adjacent to the substrate 7 and including a plurality of connector pins 8a including connection portions 32, each of which is electrically connected to a corresponding one of the plurality of electrodes, and a housing 10 containing the plurality of connector pins 8a; and a covering member 12 covering the connection portions on the substrate. The housing includes an opening facing away from the substrate. The covering member 12 includes a first portion 12a located on the substrate 7 and a second portion 12b located on the housing 10. The second portion 12b includes a first protrusion 12b1 protruding toward the opening 10i in a plan view. Thus, the probability of breakage of the connector can be reduced.

A system and method for selective heating and/or sintering of a material including first and second substrates, an array of one or more resistive heating elements arranged on a planar surface of a substrate and material to be heated located on the other substrate.

A thermal head includes a substrate; a plurality of heat generating portions; a common electrode disposed on the substrate and electrically connected to the plurality of heat generating portions; a plurality of individual electrodes disposed on the substrate and each electrically connected to a corresponding one of the plurality of heat generating portions; a first insulation layer disposed on the heat generating portions, a part of the common electrode, and a part of the individual electrodes; a second insulation layer located adjacent to the first insulation layer and disposed on a part of the individual electrodes; and a static removing layer disposed on the first insulation layer and grounded. The static removing layer includes a first portion disposed on an upper surface of the first insulation layer and a second portion electrically connected to the first portion and disposed on an upper surface of the second insulation layer.

A printing device includes: a thermal head; and a processor. The thermal head includes a heating element. The processor is configured to perform: (a) creating; and (b) driving. The (a) creating creates print data based on image data representing an image to be printed on a printing medium. The (b) driving drives the heating element to apply heat to the printing medium according to the print data. The processor is configured to further perform: (c) determining. The (c) determining determines whether to create a plurality of labels for lamination using at least one printing medium including a first printing medium. The first printing medium is transparent and includes a plurality of heat-sensitive layers laminated together. Each of the plurality of heat-sensitive layers is configured to develop a different color when heat is applied from the heating element. The (c) creating is performed in accordance with a determination result in (a).

A method for introducing a reflective, refractive, and/or diffractive variable and/or non-variable image to a substrate by use of thermal transfer printing includes simultaneously transferring a defined portion of each of a protective coating layer, an image layer, and an adhesive layer from a carrier film of a transfer ribbon to the substrate by applying heat to the transfer ribbon. The defined portions of the image layer and the protective coating layer are adhered to the substrate using the adhesive layer. Subsequent to transferring the protective coating layer, the image layer, and the adhesive layer, durability is provided to the image layer by cross-linking the protective coating layer that is over the image layer by exposing the protective coating layer to a radiation source after the defined portions of the protective coating layer, the image layer, and the adhesive layer are transferred from the carrier film.

A thermal head according to the present disclosure includes a substrate, a plurality of heat generating portions, a plurality of first electrodes, and a second electrode. The plurality of heat generating portions are located on the substrate. The plurality of first electrodes are located on the substrate and respectively connected to the plurality of heat generating portions. The second electrode is located on the substrate and is located across the plurality of first electrodes. The second electrode includes protruding portions protruding in a first direction from the second electrode toward corresponding ones of the first electrodes and being in contact with the corresponding ones of the first electrodes.

The present invention provides a thermal print head capable of better performing printing on a printing medium; the thermal print head including: a substrate (1), formed with single crystal semiconductor; a resistor layer (4), including a plurality of heating portions (41) arranged in a main scan direction; and a wiring layer (3), configuring a charging path to the plurality of heating portions. The substrate includes: a main surface (11), being a surface opposite to the resistor layer; and a convex portion (13), disposed as protruding from the main surface and extending in the main scan direction. The convex portion includes: an inclining surface (132), inclining relative to the main surface and extending in a linear manner when viewing from the main scan direction; and a curving surface (131), disposed, in a protruding direction of the convex portion, on a position farther away from the main surface than the inclining surface, and curving in a manner that protrudes toward the protruding direction. Each of the plurality of heating portions includes a heating curving portion (411) formed on a portion corresponding to the curving surface.

A thermal printer comprising a thermal head including an array of heating elements disposed on the thermal head, the array of heating elements including optical structures comprising an array of first pixels corresponding to a first color and second pixels corresponding to a second color, the first color being different from the second color; wherein individual ones of the pixels comprise sub-pixels, a given pixel comprising a first sub-pixel and a second sub-pixel, the first sub-pixel comprising a first optical structure corresponding to light to be reflected or transmitted from a substrate toward a left eye of a person from a first viewing angle, the second sub-pixel comprising a second optical structure corresponding to light to be reflected or transmitted from a substrate toward a right eye of the person from the first viewing angle, and the first sub-pixel and the second sub-pixel correspond to the color of light of the given pixels to be reflected or transmitted from a substrate.