摘要:
A device for scanning a drawing and/or for printing a drawing paper with a pattern corresponding to said drawing, which comprises a support for holding the drawing and/or the drawing paper; a scanning head for generating electrical signals corresponding to said drawing, and/or a printing head which is fed the corresponding electrical signals for printing the pattern; means for generating relative motion between said support and the scanning head and/or the printer head in one direction; means for generating relative motion between support and scanning head and/or printer head in another direction, normal to the first; one electronic trigger generator for the generation of scanning and/or printer trigger signals when a point of the drawing should be scanned or when a point of the pattern should be printed; one release circuit for the successive release of a given number of scanning and/or printer trigger signals; and another release circuit for connecting the means for the relative motion in the second direction during such time intervals in which the scanning and/or printer trigger signals are not released.
摘要:
In order to obtain exact synchronism between the movement of a record carrier tape and the needle operations of a circular knitting machine, the record carrier is stepwise transported by a stepping motor which is controlled by synchronizing pulses generated by an impulse generator which is controlled by the needles of the knitting cylinder, or by other synchronizing elements of a rotary part of a knitting machine, which are spaced exactly the same distances from each other. Preferably, accelerating and decelerating elements are provided on the needle cylinder, and control an impulse generator so that the speed of the record carrier is gradually increased to a desired speed and then gradually reduced to a standstill when the knitting operations are to be controlled by a standard program.
摘要:
Three photosensitive elements, such as photodiodes, one for each of the colors red, green and blue, scan, point-by-point, and sense the colors of a pattern. The voltages corresponding to the three colors are so amplified substantially an equal amount that the voltage corresponding to the brightest of the colors is raised to a fixed value of that is independent of the color brightness.
摘要:
A thyristor circuit is assembled in a small tubular casing which is mounted on a knitting machine. A feeler projects from the casing and contacts an improperly placed latch of a needle to produce a current pulse firing the thyristor so that the same energizes the relay for stopping the motor of the knitting machine.