Abstract: In the disclosed invention, when watermark print is set during printing, the printer driver makes a secret operation setting for holding the secret of print data accordingly, and transmits this print data to the stencil printing machine. Therefore, even if the printing of the stencil printing machine is remotely operated, it is possible to prevent an inadvertent failure to set a secret operation and to keep the secret of print data.

Abstract: A printing control apparatus for controlling a stencil printing machine (50, 100), wherein a stencil sheet, which is made on the basis of image data, is wound around a printing drum (25; 125, 126) with which a print sheet (34; 141) is held in pressured contact to perform a stencil printing operation, provides the stencil printing machine with image data representative of an image to be reproduced as an object, and printing order information representative of a page order in which the printing operation is performed using image data, an ink color for the printing drum to be used, and a timing in which one printing drum is replaced with another one. In accordance with the printing order information, the ink color contained in image data is detected and an order for each page to be printed is determined on the basis of a user's print request to execute the printing operation according to the page order and to reduce the number of times the printing drum is replaced with.

Abstract: It is an object of the present invention to provide a printing stencil and a method for its preparation. There is thus provided, In accordance with a preferred embodiment of the present invention, a printing stencil comprising a porous stencil carrier layer, preferably of a non-woven tissue, which is impregnated with a solid or liquid radiation curable material. The printing stencil may further comprise a mask laid upon or integral to the stencil layer for defining areas transparent and areas non transparent to curing irradiation. There is thus also provided, in accordance with a preferred embodiment of the present invention, a method for the preparation of a printing stencil, said printing stencil comprising a stencil carrier layer and a stencil layer, which is impregnated with a radiation curable material.

Abstract: A transfer roll device for producing a banner including a housing, a paper roll mounted on the housing, a cloth roll mounted on the housing, first and second tension controllers connected to the housing and positioned above the paper and cloth rolls for controlling a tension of paper and of cloth respectively passing thereover, an endless belt passing over a heating drum, and a transfer sheet wound around a torsionless pipe. The torsionless pipe is fitted over a rotatable longitudinal bar. The transfer sheet is wound around the torsionless pipe such that stencil characters are directly inwardly. The transfer sheet, the cloth, and the paper extend in overlapping relationship so as to be interposed between the endless belt and the heating drum.

Abstract: A stencil printing apparatus for printing a workpiece web at a printing station has a support on which the workpiece web is to be located so that a pattern can be printed on it in a plurality of successive printing operations. A magazine is located above the support at the printing station and accommodates a plurality of vertically stacked flat-screen stencils, and an arrangement is provided for serially withdrawing some or all of the stencils from the magazine, moving them to printing position above the workpiece web, and then returning them serially back to the magazine.

Abstract: To obtain a substantially uniform print density while printing at high speed with a hammer-type impact printer, the hammer is electromagnetically driven in response to an energizing current which decays with a predetermined time constant from a high initial level toward a set point level which is automatically adjusted for different classes of characters so that the impact energy imparted to the hammer is regulated as a function of the character being printed. To adaptively absorb the shock forces generated by the rebounding hammer, the energizing current for the electromagnetic driver is reduced to a predetermined fraction of the set point level.

Abstract: A label printer of the type employing a stencil covered cylinder in which the stencil may have any one of plural arcuately spaced apart indicias cut therein separately printed therefrom. The label printer includes means for indexing the printing cylinder to any one of two or more positions for the optional printing of the separate contents of any one of the arcuately spaced apart portions of the stencil on the same machine.