A COMPOSITION
    1.
    发明申请

    公开(公告)号:US20230037133A1

    公开(公告)日:2023-02-02

    申请号:US17756925

    申请日:2020-12-11

    申请人: DataLase Ltd.

    摘要: The invention is directed towards a composition comprising: a near-infrared radiation absorbing compound; a colour-forming compound; and a heat transfer agent operable to facilitate heat transfer from the near-infrared radiation absorbing compound to the colour-forming compound; wherein the near-infrared radiation absorbing compound is present in an amount of 0.1-3.5 wt % of the total composition, and the heat transfer agent is present in an amount of 1-15 wt % of the total composition, and the heat transfer agent is present in the composition as solid particles. The invention further relates to substrates comprising the composition applied thereto, as well as methods of forming colour or an image on said substrates.

    Single step processing of color thermochromic materials

    公开(公告)号:US10583678B1

    公开(公告)日:2020-03-10

    申请号:US16211749

    申请日:2018-12-06

    摘要: An approach for forming a multi-colored image on a substrate that includes a thermochromic material capable of producing at least two different colors is disclosed. Individually selected pixels of the thermochromic material that correspond to the image are heated to predetermined temperatures. Each predetermined temperature corresponds to a predetermined color shift of the thermochromic material. While the individually selected pixels are being heated, an area that includes the individually selected pixels is flooded with an amount of UV radiation sufficient to at least partially polymerize the thermochromic material. A color of each individually selected pixel is determined by a predetermined temperature to which the pixel is heated and the amount of UV radiation to which the pixel is exposed.

    Marking System and Marking Device
    4.
    发明申请

    公开(公告)号:US20200056908A1

    公开(公告)日:2020-02-20

    申请号:US16500753

    申请日:2018-03-06

    申请人: Hitachi, Ltd.

    摘要: This marking system is provided with: a marking device which has a marking unit which gives a mark for managing the quality of a product, a housing part which houses one or more temperature indicating materials, and a providing unit which provides, to the marking unit, a temperature indicating material selected by the housing part; and a control device which has a storage unit that stores temperature-indicating material information on a developing temperature or/and a decoloring temperature of each of the temperature-indicating materials included in the housing part; and a processing unit that acquires, from a server or an input unit, an appropriate temperature of the product, selects, on the basis of the acquired appropriate temperature of the product and the temperature-indicating material information, a temperature-indicating material, and notifies the providing unit of details of providing the selected temperature-indicating material.

    Plastics colouration
    7.
    发明授权

    公开(公告)号:US10246562B2

    公开(公告)日:2019-04-02

    申请号:US13638011

    申请日:2010-10-07

    摘要: A method of imparting color to a plastic substrate comprising applying to the substrate, or incorporating within the substrate, a diacetylene compound of general formula (I) wherein n=1 to 20; R1=an optionally substituted C1-20 alkyl group which may contain heteroatoms; T=H, an optionally substituted C1-20 alkyl group which may contain heteroatoms or —(CH2)m—C(═O)-Q2R2; Q1=NH, CO, NHCONH, OCONH, COS, NHCSNH or NR3, wherein m, Q2 and R2 are independently selected from the same groups as n, Q1 and R1 respectively; R3 is an optionally substituted C1-20 alkyl group which may contain heteroatoms; and irradiating the substrate to impart color to the substrate is described.

    THERMOCHROMIC CONTAINER FOR ELECTROMAGNETIC RADIATION PROTECTION

    公开(公告)号:US20190064241A1

    公开(公告)日:2019-02-28

    申请号:US15685223

    申请日:2017-08-24

    摘要: A container is disclosed which may be used with fluids sensitive to light of one or more known wavelengths. The container may be formed of a thermochromic material or including a thermochromic coating. The properties of the thermochromic material or coating may be selected so as to be transparent to light of the wavelength to which the fluid is sensitive at a first temperature and to be opaque to that wavelength of light at a second temperature. While a technician is handling the container, the container is controlled to be at the first temperature. When the technician is finished, the container is controlled to move to the second temperature to protect the fluid within the container.

    Information writable film and a sample storage body

    公开(公告)号:US10102778B2

    公开(公告)日:2018-10-16

    申请号:US14651871

    申请日:2013-12-13

    摘要: To provide an information writable film that is chemical and abrasion resistance, and is suitable for high contrast white laser marking. The information writable film comprises a writable film layer 110 and a reading assistance layer 120. The writable film layer 110 is formed into a film shape by thinly stretching a material, which material is a mixture of a color former composition for coloring white when receiving the particular wavelength laser beam by changing its physical and chemical characteristic and a transparent plastic composition. The reading assistance layer 120 is provided enhancing the contrast ratio. The writable film layer 110 is provided with laser coloring properties and chemical and abrasion resistance. During writing, an identification code is written by laser by coloring the color former in the writable film layer 110. During reading, the contrast ratio is enhanced by superimposing the color of the reading assistance layer 120.