4results about How to "Guaranteed printing effect" patented technology

The application relates to the technical field of packaging boxes, in particular to a packaging color box surface printing process, which comprises a feeding process, a printing process and a discharging process. In the feeding process, a clamp is used to send the packaging box to the position of a transfer roller on a printing equipment rack. In the printing process, a color printing pattern on a transfer paper is transferred to the outer side wall of the packaging box through the transfer roller on the printing equipment rack. In the discharging process, the clamp is used to send the packaging box to the discharging position for discharging. The clamp composed of a main shaft, a mounting column and a clamping plate supports and clamps the inner side wall of the packaging box, so that the packaging box can stably abut against the side wall of the transfer roller in the printing process, the transfer effect is effectively guaranteed, and the printing forming effect of the color box surface is guaranteed.

This application relates to the field of printed image color management technology, and in particular to a method, apparatus, computer device, and medium for generating a print preview image. The method includes: obtaining a gamut factor, a white balance factor, a hue response function, and a saturation function based on the printing scheme of the image to be printed and the default printing scheme corresponding to a mapping table; obtaining a first color value for each node based on the PreviewRGB value corresponding to each node in the mapping table; determining a second color value for the node based on the product of the gamut factor and the first color value of the node; obtaining a temporary RGB value for the node based on the product of the white balance factor, the hue response function, and the PreviewRGB value; obtaining a third color value for the node based on the temporary RGB value; obtaining a fourth color value based on the saturation function and the third color value of the node; converting the fourth color value into a target PreviewRGB value to obtain an updated mapping table; and generating a print preview image based on the updated mapping table. This method can save memory.

The utility model relates to 3D printing technical field, concretely for a kind of liquid level control device for photocuring 3D printing equipment, including trough, follow-up mechanism, adjusting mechanism, make-up pipe and make-up mechanism;Trough side wall is provided with communicating pipe, the inlet of communicating pipe is communicated with the bottom of trough side wall;Follow-up mechanism is arranged at one side of trough, and one end of follow-up mechanism is communicated with trough by communicating pipe;Adjusting mechanism is arranged at one side of trough for adjusting the height of liquid level in trough, and one end of follow-up mechanism extends into adjusting mechanism;Make-up pipe is arranged in trough;Make-up mechanism is arranged at one side of trough, and the discharge end of make-up mechanism is communicated with adjusting mechanism.The utility model is set up by the cooperation between follow-up mechanism, adjusting mechanism and make-up mechanism, device can automatically maintain the stable liquid level in trough, avoid that printing layer and trough wall are adhered due to liquid level being too high, or the defects such as printing layer material shortage, fault are caused by liquid level being too low.

The utility model relates to digital printing machine nozzle technical field, concretely relates to a digital printing machine nozzle adjusting mechanism, including nozzle dolly and set in the middle part of the bottom end of nozzle dolly and print structure, the bottom of nozzle dolly both ends are provided with the powder scattering structure, the powder scattering structure includes the rack fixed in the nozzle dolly and the movable assembly fixed in the rack outside, the movable assembly includes the outer frame of the sleeve setting in the rack outside and the drive motor of the sleeve setting in the inner side of outer frame, the outside fixed location frame of outer frame, the middle part of location frame is fixed with the powder scattering head sleeve, the output of drive motor is connected with gear transmission, and the gear keeps engagement with the rack, fixes and sets up with the powder scattering head and location frame, realizes the function of combination cabinet, the drive motor structure in movable assembly, can drive two sets of gear under the control of outside, since it keeps engagement with the rack, so the powder scattering head and location frame structure can move left and right along the rack, realizes the function of position initiative adjustment.