摘要:
A finished flexo plate with printing dots and non-printing indicia. The printing dots have an elevation above the plate floor sufficient to transfer ink to a substrate in a printing step, whereas the non-printing indicia are configured for persistent readability relative to the plate floor but have a height relative to the plate floor insufficient to transfer ink to the substrate in the printing step. The non-printing indicia define a pattern of alphanumeric characters, non-text graphics, or a combination thereof, and are disposed on the plate floor in the form of areas of presence and absence of polymer defined by structures formed of microdots, each microdot having an elevation relative to the plate floor lower than a printing height.
摘要:
Thin film labels, systems, and methods of making and using thereof are described. The thin film systems contain a label and a carrier film, where the label contains an overprint layer, indicia, and an adhesive layer. The carrier film may be coated on one or both sides with a release liner. The adhesive layer can be any suitable adhesive, such as a pressure sensitive adhesive, a fluid activatable adhesive, a heat activated adhesive, or a contact activated adhesive. The label is formed by printed or coating one or more layers of precursor material on the carrier film using standard printers. Suitable precursor materials include, but are not limited to epoxys, solvent cast films, polyurethane dispersions, such as acrylic-urethane hybrid polymer dispersions and polyester-polyurethane dispersions. After the overprint layer dries or is cured, the indicia are printed onto the overprint layer, then the adhesive is coated on top of the indicia.
摘要:
A web-fed printing machine that is highly variable in terms of its configuration, provides a high degree of positioning accuracy of processing modules and has a cost-efficient machine frame, includes a plurality of the processing modules fixed to the machine frame. Each respective processing module is advantageously fixed to the machine frame by a respective carrier module. Every carrier module includes two parallel longitudinal beams extending in the machine direction and two parallel crossbars which are oriented at right angles to the longitudinal beams and which interconnect the two longitudinal beams.
摘要:
The present invention relates to a printing apparatus and method for measuring and compensating for a synchronization error and the present invention has been made in an effort to provide a printing apparatus and method for measuring and compensating for a synchronization error, which may compensate for the synchronization error between a roll and a substrate support part occurring due to a deformation, and the like which is caused by a printing pressure of the roll at the time of electronic printing.
摘要:
A register in a printing machine is controlled and adjusted by providing at least one printing unit provided with at least two printing groups in the printing machine. Each printing group comprises a cylinder pair consisting of at least a forme cylinder and a transfer cylinder. The forme cylinder of the first printing group is phase shifted at a first amount for the register adjustment in a circumferential direction. The transfer cylinder of the first printing group is phase shifted in a second amount in the circumferential direction. The amount of the phase shift of the forme cylinder is different from the amount of phase shift of the transfer cylinder. The two amounts of the phase shifts are not equal to zero.
摘要:
A method of preparing cylinders for printing on a web during auto transfer operations is provided. The method includes the steps of printing images on a web with at least one first printing cylinder; accelerating at least one second printing cylinder so that the at least one second printing cylinder has a surface velocity that equals a velocity of the web; adjusting a phasing of the at least one second printing cylinder with respect to the web during the accelerating step and before the surface velocity of the at least one second printing cylinder equals the velocity of the web; moving the at least one first printing cylinder away from the web and moving the at least one second printing cylinder towards the web; and printing images on the web with the at least one second printing cylinder. A printing press configured for auto transfer is also provided.
摘要:
An apparatus and process for making sheets having indicia spaced in a machine direction. Between or among the indicia are perforations or chop-off cuts. The spacing, in the machine direction, between the indicia and perforations or chop-off cuts is maintained over long sheet lengths. The product produced using this apparatus and process is typically paper, and particularly can be used for paper towels or placemats.
摘要:
To correct the position of a conveyed item (12) in a conveyance system (10), the deviation of the conveyed item (12) from its target position is detected. If this deviation reveals that a correction is necessary, a suitable correction profile Pi is selected from a plurality of available correction profiles (P1, P2, P3), and the correction is carried out.
摘要:
The present invention provides a method and system for online health condition monitoring of rotary machinery such as printing presses. The rotary machines have one or more stages and each stage has one or more rotary components. The method comprises the steps of: receiving one or more signals from sensors at each of the rotary units or bearing housings; generating an error matrix and diagnosing rotation synchronization errors among the different stages; generating error matrices using different signal processing techniques and diagnosing the health conditions of rotary components such as gears, bearings and shafts; and identifying the stages and rotary components having imperfections by comparing the current error matrices to stored reference error matrices. The present invention can also be used in other applications involving rotational components such as automobiles, airplanes, and power turbines to name a few.
摘要:
The present invention provides a method and system for online health condition monitoring of rotary machinery such as printing presses. The rotary machines have one or more stages and each stage has one or more rotary components. The method comprises the steps of: receiving one or more signals from sensors at each of the rotary units or bearing housings; generating an error matrix and diagnosing rotation synchronization errors among the different stages; generating error matrices using different signal processing techniques and diagnosing the health conditions of rotary components such as gears, bearings and shafts; and identifying the stages and rotary components having imperfections by comparing the current error matrices to stored reference error matrices. The present invention can also be used in other applications involving rotational components such as automobiles, airplanes, and power turbines to name a few.