摘要:
A method of screening half-tone picture themes, in which the gray tones of the half-tone picture theme are reproduced by changes in the structural width of a basic screen structure having any desired form. The assignment of a gray tone area of the half-tone picture theme to the screen structure width reproducing this gray tone area may be selectively determined. In a photographic version of the inventive method (FIG. 1), a basic screen structure 1 of any form is prepared and used to produce broadening screen structures as negative films 9,11. The same number of tone separations 20,22 is produced as negative films from the picture theme 13 to be screened, each of which tone separations reproduces a certain gray tone area of the half-tone picture theme which can be adjusted by the exposure time. Tone separations 22,20 are consecutively exposed onto a line material 24 with the broadening screen structures 9,11 respectively assigned to them, the line material then reproducing the screened picture theme in such a way that the gray tone parts determined by the tone separation are reproduced locally by the screen structure width assigned to it. There are several photographic and EDP/scanner/laser variants of this method suitable for screening half-tone picture themes, producing screened printing originals and printing data carriers with this kind of screened picture theme.
摘要:
A data carrier, in particular check paper, having a picture theme printed on by the dot screen, grain screen, line-half-tone combination or special screen techniques or as a line copy, which is printed over by a security pattern serving the purpose of protecting the data carrier. The picture theme is interrupted by a negative security pattern adapted to the security pattern, into which negative security pattern the security pattern is printed congruently. The lines of the negative security pattern are preferably wider than the lines of the security pattern, so that the lines of the security pattern integrated into the picture theme are at a certain distance from the lines of the negative security pattern in the entire picture area and do not touch the picture theme.
摘要:
A method of screening half-tone picture themes, in which the gray tones of the half-tone picture theme are reproduced by changes in the structural width of a basic screen structure having any desired form. The assignment of a gray tone area of the half-tone picture theme to the screen structure width reproducing this gray tone area may be selectively determined. In a photographic version of the inventive method (FIG. 1), a basic screen structure 1 of any form is prepared and used to produce broadening screen structures as negative films 9,11. The same number of tone separations 20,22 is produced as negative films from the picture theme 13 to be screened, each of which tone separations reproduces a certain gray tone area of the half-tone picture theme which can be adjusted by the exposure time. Tone separations 22,20 are consecutively exposed onto a line material 24 with the broadening screen structures 9,11 respectively assigned to them, the line material then reproducing the screened picture theme in such a way that the gray tone parts determined by the tone separation are reproduced locally by the screen structure width assigned to it. There are several photographic and EDP/scanner/laser variants of this method suitable for screening half-tone picture themes, producing screened printing originals and printing data carriers with this kind of screened picture theme.
摘要:
A data carrier, in particular check paper, having a picture theme printed on by the dot screen, grain screen, line-halftone combination or special screen techniques or as a line copy, which is printed over by a security pattern serving the purpose of protecting the data carrier. The picture theme is interrupted by a negative security pattern adapted to the security pattern, into which negative security pattern the security pattern is printed congruently. The lines of the negative security pattern are preferably wider than the lines of the security pattern, so that the lines of the security pattern integrated into the picture theme are at a certain distance from the lines of the negative security pattern in the entire picture area and do not touch the picture theme.
摘要:
The invention relates to a device (101) to provide helical rotating projection of a thread-forming thread core (102).According to the invention, internally in a cylindrical space (103) of a fluid cylinder-piston device (104), there is arranged a movably actuatable piston (105) provided with a number of helical holes (106). In that connection, a helical (109) shaft (108) shape-adapted to the respective hole (106) and helix (107) is receivable in said respective helical hole (106), and that the respective shaft (108) is, via a gear (110), connected with a mechanism (111) for the transmission of rotating (112) as well as axial (113) displacement motion to said thread-formed thread core (102). Finally, a stop member (114), which is arranged to limit the displacement motion (115) of the piston, is arranged internally in the cylinder space (103) of said piston cylinder.
摘要:
An apparatus for the application of adhesive to the outside surfaces of book blocks to be encased in a casing inside a casing-in machine, includes an adhesive application device having two application rollers arranged opposite each other in an adhesive application area and which roll off respectively one outside surface of a book block that is conveyed while positioned on a saddle plate of a circulating conveyor. Each roller includes a recess that forms a shoulder parallel to the rotational axis, for applying adhesive to the fold region of a book block. The rotational position of the recess can be adjusted based on the position of a specific fold on a book block that passes through the adhesive application area by providing the conveyor and the application rollers with separate drives for an infinitely variable change of the relative position between the saddle plates on the conveyor and the rotational position of the application rollers. The drives are controllably connected by a control unit. At least the drive for the application rollers of the adhesive application device comprises a controllable drive element.
摘要:
A device for pressing a book casing onto adhesive-coated outer surfaces of a book block includes a circulating conveyor having a perpendicular section and saddle plates arranged to be conveyed upward in the perpendicular section. A press on device, with a press-on region and operating synchronously with the circulating conveyor, includes press-on rollers arranged opposite each other in the press-on region. The rollers respectively press one cover of the casing onto one adhesive-coated outer surface of a book block which is positioned straddling on one of the saddle plates conveyed upward in the perpendicular section of the circulating conveyor. A support plane is provided so that a book casing can be positioned and evenly spread out to match a length of the book block conveyed on the saddle plate. The support plane is arranged so that the book casing thereon can be supplied transversely to the perpendicular conveying section to a holding position for takeover by the book block. A flexible hold-down device is located above the holding position to press the evenly spread out book casing onto the support plane.
摘要:
An improved technique for monitoring computer processes and their attributes using a three-dimensional graphical image. The three dimensional graphical image is formed by displaying the graphical objects associated with the computer processes and their attributes. The physical relationship between the various graphical objects within the graphical image preferably model the actual relationships between the processes and their attributes. The computers which run or activate the processes may also be represented by a graphical object within the graphical image. As the attributes of the computer processes change, the characteristics of the graphical objects are quickly adjusted and the three-dimensional graphical image is updated to reflect the changes to the attributes of the computer processes being monitored. By varying the characteristics of the graphical objects, a user is able to visually notice the changes that occur to the graphical objects of the three-dimensional graphical image as an indication of the changes taking place to the attributes of the processes being monitored.
摘要:
A method of repairing a damaged (e.g., cracked) portion of a buried sewage pipe by permeating one or more layers of fibrous material with a hardenable plastic compound (such as epoxy resin), convoluting the thus obtained mat around a radially expandible length of hose to permit frictional engagement between the internal surface of the mat and the external surface of the hose, introducing the hose into a selected defective portion of the pipe, expanding the hose and the convoluted mat so that the mat engages the internal surface of the pipe, deflating the hose, and withdrawing the hose from the pipe, preferably after the plastic compound has set wherein a film of polyethylene is inserted between the external surface of the hose and the internal surface of the convoluted mat to enhance friction and to thus compel the hose to turn in the course of the expanding step. Expansion of the hose results in expulsion of some plastic compound beyond the peripheral surface of the convoluted mat; such compound bonds the expanded convoluted mat to the pipe and at least partially fills the crack or cracks in the adjacent portion of the pipe. Some plastic compound is also expelled at the axial ends of the convoluted mat to form a smooth transition between the internal surface of the pipe and the internal surface of the expanded convoluted mat.
摘要:
Apparatus for singularizing stacked paper sheets has a rotary withdrawing conveyor with an annulus of equidistant satellites having suction cups which attract successive lowermost sheets of a stack in a magazine adjacent a first portion of an endless path for the satellites. The satellites deliver the sheets into a second portion of the endless path where the leaders of the sheets are caused to project radially outwardly and to enter the spaces between the open jaws of grippers which are transported by an endless chain in such a way that a gripper which is about to receive a sheet is moved at the speed of the oncoming sheet-carrying satellite and in the same direction. The satellites have discs cooperating with an endless band serving to gradually release a sheet which is in the process of advancing with a gripper.