A printing device 1 includes a transport belt 5 that transports the fabric M in a transport direction A in a state where the first surface M1 of the fabric M faces the adhesive layer 5a, printing section 101 that prints an image on a second surface M2 of the fabric M transported by the transport belt 5, the second surface M2 being on opposite side than the first surface M1, and an infrared imaging section 30 that captures an image of an imaging target I provided on the first surface M1 by using infrared rays with respect to the fabric M transported by the transport belt 5.

A heating-energy-saving equipment for printing and dyeing factory, including: a heat source generator, a first ejector, a second ejector, a setting machine and a flash drum; a steam outlet of the heat source generator is connected to an injection port of the first ejector through a pipeline, an outlet of the first ejector is connected to an injection port of the second ejector, the water outlet of the flash drum is provided with a second branch pipe which is connected to the first ejector port of the second ejector, and the steam outlet of the flash drum is connected to the second ejector port of the second ejector, the present invention can save energy and reduce production costs; can be improved upon the existing equipment without changing the main structure of existing equipment, and it is very easy to implement; can reduce the discharge heat loss and environmental pollution.

Novel inkjet ink compositions for forming an image in a form of an elastic film attached to a surface of a stretchable and/or flexible substrate and processes utilizing same for inkjet printing color images on various substrates such as colored and absorptive or impregnable stretchable materials, which are characterized by heightened efficiency in process time, ink and energy consumption, as well as products having durable, wash-fast and abrasion-fast images printed thereon by the process, are disclosed. The novel ink compositions comprise a first part, which contains a property-adjusting agent and a carrier, and a second part which contains an emulsified property-sensitive proto-elastomeric film-forming agent, a colorant and a carrier, such that the second part congeals upon contact with the property-adjusting agent. The second part is digitally applied to the substrate less than 1 second following the application of the first part to the substrate.

Provided is a method for prejudging yarn dyeing performance, an electronic device and a computer-readable storage medium. The method includes: determining a yarn normally dyed for a yarn to be judged; performing spectral detection on the yarn normally dyed to obtain first spectral information; calculating a covariance by simulation through a Gaussian process kernel; obtaining a plurality of pieces of continuous second spectrum information for the yarn to be judged, and establishing a Gaussian process regression model; obtaining third spectrum information for a yarn to be detected; performing a subtraction operation on the third spectral information and the second spectral information; and judging the yarn dyeing performance according to a matrix value obtained by the subtraction operation.

A dyeing apparatus is configured to be connected to an embroidery apparatus. The dyeing apparatus includes a dyer configured to dye a thread; a conveying path in which a path length of the thread from the dyer to the embroidery apparatus is changed according to an operation of the embroidery apparatus; and a conveyance control unit configured to adjust a conveyance speed of the thread in the conveying path, according to a change in the path length. The dyer dyes the thread at a dyeing speed that matches the adjusted conveyance speed.

Provided is a method for prejudging yarn dyeing performance, an electronic device and a computer-readable storage medium. The method includes: determining a yarn normally dyed for a yarn to be judged; performing spectral detection on the yarn normally dyed to obtain first spectral information; calculating a covariance by simulation through a Gaussian process kernel; obtaining a plurality of pieces of continuous second spectrum information for the yarn to be judged, and establishing a Gaussian process regression model; obtaining third spectrum information for a yarn to be detected; performing a subtraction operation on the third spectral information and the second spectral information; and judging the yarn dyeing performance according to a matrix value obtained by the subtraction operation.