Abstract: A rotary printing machine, in particular in a reel-fed newspaper offset rotary press is provided with a device for correcting the web width. A rotatively mounted rotational body configuration is arranged in the path of the web between two print printing nips (2, 3) on one side of the web. The rotational body configuration (5; 6) has a wave-like profile that is transverse to the running direction of the web.

Abstract: A printing system, for instance, for printing labels makes use of one or more sequence generators (13, 14; 113, 114) which can return an indicium definition in response to an input value. Typically, the input value is a sequence position, modified by step and repeat values. The sequence generators (13, 14; 113, 114) are used during the printing operation, avoiding the need for the data source file required in conventional mail merge and label printing systems.

Abstract: The side wall (5) for an ink fountain of a printing machine has two plates (11, 14) fixed some distance apart and an intermediate plate (13) having a front edge (13a) in the shape of an arc of a circle. This intermediate plate (3) is mounted between the plates in such a way that it can be shifted and tilted. The front edge of this plate contacts the circumference of an ink fountain roller (6) via springs (18, 19) acting on the intermediate plate. The wall has a slideway (10) in which the plates (11, 14, 13) are mounted. The slideway has a reinforced region (12) on one of its sides which is proximate the ink fountain roller (6). The side wall (5) thus more effectively seals an ink fountain against leakage.

Abstract: There is disclosed an ink jet recording head comprises a plurality of recording elements for applying an energy to discharge ink, a recording element driver for driving the recording elements, a control circuit for controlling the recording element driver, and a high resolution reference signal generator using a plurality of input signals continuously given from the outside in a predetermined period and generating a reference signal which has a period shorter than the predetermined period, so that recording control is performed by supplying the reference signal to the control circuit. The bluntness of a pulse waveform by the transmission of the signal via a cable, and a radiation noise generated from the cable can be inhibited, and the ink jet recording head can cope with high speed and a multiplicity of nozzles.

Abstract: Prior to printing work, the operator of the printing machine selectively inputs a kind of the printing paper (such as one of coated paper, mat-coated paper, and non-coated paper and so on) through a paper-type input portion 17. A CPU 11 controls the supply of ink according to the type of printing paper to be used as a result of controlling one of the operation of ink fountain keys, an ink fountain roller, and an ink ductor roller using an ink fountain key controller 21, an ink fountain roller controller 22, and an ink ductor roller controller 23.

Abstract: A device for transversely sizing printed products that uses individual application devices such as nozzles that are provided on a roller. The method includes moving individual application devices in at least one sizing position where the relative speed between the application device and printed product is held at essentially zero.

Abstract: Substantially uniform spacing between a printhead and a platen throughout a print zone associated with said printhead in an ink jet printer is provided. The ink jet printer includes a printer frame, and the platen is slideably coupled to the printer frame. A first carrier guide rod is attached to the printer frame, and a second carrier guide rod has at least one end adjustably attached to the printer frame. A position of the second carrier guide rod is adjusted to provide parallelism between the first carrier guide rod and the second carrier guide rod. The platen is biased to a position relative to a position of at least one of the first carrier guide rod and the second carrier guide rod.

Abstract: A method for supplying printing ink to an ink tray of a printing press having a plurality of ink zones throughout the width of the printing to be done, an ink tray and an ink ball extending over the width and having a longitudinal axis along the printing to be done and being substantially coextensive with the ink tray, an ink supplying means at an ink supplying location, and an ink spatula for distribution of ink within the ink tray, the method comprising determining the ink requirement data for the various ink zones, inputting the ink requirement data into a computer for producing a plurality of control signals for regulating the supplied ink in supply cycles to the ink zones, supplying ink to each ink zone at the location of each ink zone, shifting the supplied ink by the ink spatula to a zone in need of ink, with priority being given during the supply cycle to the ink requiring ink zone that is most remote from the ink supplying location, the amount of ink being supplied during the supply cycle being suffi

Abstract: A method of regulating inking when printing with a printing machine, including determining an actual color value with a color measuring device directed towards a printed material, and feeding the determined actual color value to a color control device, comparing the actual color value with a desired color value, forming an adjusted variable from the comparison value by using a mathematical model of the ink control loop, and feeding the adjusted variable to an ink setting element so that the setting element correctingly changes the inking, which comprises calculating a steady state value (sstab) from an additive superimposition of the time changes in preceding adjusted variable changes (&Dgr;yi), and calculating a new adjusted variable (y) from the desired color locus (xdes), the actual color value (xact) and the steady state value (sstab).

Abstract: An apparatus is described for the densitometric measurement of printed products such as sheets printed by sheet-fed offset printing machines, having a densitometer measuring head. The head moves along a measurement strip comprising a number of measurement fields and generates signals that are converted into ink density values in a downstream evaluation unit, which is assigned to ink metering zones. The evaluation unit comprising a computer that contains stored information about the arrangement of the measurement fields of the printed colors in each metering zone. The ink density values from one measurement field are compared with the ink density values from neighboring measurement fields of the same color and type in accordance with the known structure of the measurement strip. The invention provides for the simple and fail-safe arrangement of the measurement-field colors in the individual ink metering zones.

Abstract: A printer for printing onto substrates includes a housing that mounts a movable carrier for the substrates such as a compact disc or digital versatile disc. The carrier for the substrate is driven relative to the printhead while printing takes place, and a platen is provided to urge the substrate toward the printhead for printing and to a position to space the substrate from the printhead when raised surface areas of the substrate underlie the printhead. The force applied by the platen can be varied as a function of the position of the substrate as well, in addition the carrier can be driven at a variable speed selected as a function of the length of the line being printed.

Abstract: The present invention relates to an ink supplying apparatus capable of achieving labor-saving of the cleaning operation and shortening of the working time at ink replacement or the like in a printing press. This ink supplying apparatus is equipped with an ink tray provided in the interior of an ink fountain and having a bottom plate which covers upper surfaces of ink keys, and further equipped with a deflection restraining structure for supporting the bottom plate from below to restrain the deflection of the ink tray.

Abstract: A printer including a single motor which provides rotary motion to a feed drum having an outer surface which frictionally engages and pulls a web material from a roll rotatably mounted on a supply shaft. First and second pendulum systems, each including two pendulums independently mounted to the frame, pivotally mount a take-up shaft and a tension roller to tension the web as it comes off the feed drum and the roll, respectively. A print head carriage assembly is moveable along a pivot beam which extends orthogonally across the linear path from a first end position to a second end position. The single motor is coupled to the print head carriage assembly for reciprocally pushing and pulling the print head carriage assembly between first and second end positions.

Abstract: An ink system of a rotary printing press includes a roller and a working doctor blade. The roller has a structured surface which may include helical or annular grooves.

Abstract: A method of improving the durability of an ink jet ink image comprising the steps of: a) providing an ink jet ink receiving layer containing a hardener; b) image-wise depositing pigment-based ink jet ink on the hardener-containing ink receiving layer; and then c) applying to the ink receiving layer a solution comprising a hardener that is the same or different from the hardener in the ink receiving layer.

Abstract: A retractable in-line inking/coating apparatus selectively applies either spot or overall ink/coating to a blanket or flexographic plate on a blanket cylinder or spot coating or overall ink/coating to a flexographic printing plate on a plate cylinder in a rotary offset printing press. The inking/coating apparatus is pivotally mounted on the tower of a printing unit or dedicated coating unit, and is extended into and retracted out of inking/coating engagement by a carriage assembly which is pivotally coupled to the printing unit tower. Because of the pivotal support provided by a cantilevered support arm, the inking/coating apparatus can be raised and lowered through a Ferris wheel arc movement between adjacent printing units. The aqueous component of the printing ink or coating is evaporated by a high velocity, hot air interstation dryer and a high performance heat and moisture extractor so that the ink on a freshly printed sheet is dry before the sheet is printed on the next printing unit.

Abstract: A method for producing a printed product, such as a newspaper using a plurality of product and part-product webs. The webs, or selected ones of the webs can be longitudinally or transversely perforated or both. This allows a simple way for accomplishing the removal of parts of the printed product, such as selected advertisements or selected columns of material.

Abstract: A printing apparatus includes a media supply section and a media take-up section. Each section is capable of accepting a plurality of cassettes. On the supply section side, the cassettes can contain a roll of photosensitive material that is to be processed through a printing section. The cassettes on the take-up sections are initially empty and are designed to receive the web of photosensitive material after the web has been conveyed through the printing section. The cassettes can be provided at a plurality of locations and can be angularly positioned with respect to each other. A single transport assembly can be provided at each of the supply section and take-up section, and can be rotatable about a rotatable point so as to accept or discharge media to each of the appropriate cassettes. A splicer is provided on the transport assembly in the supply section, for splicing the end of the material from an empty cassette, and is also rotatable with the transport assembly.

Abstract: A doctor blade for direct contact with a ceramic roll surface. The doctor blade includes a strip of metallic carrier material, which, along one edge section is provided with a ceramic coating. The ceramic coating on the blade has a hardness ranging from approximately 850 to 950 microvickers, thereby substantially increasing wear resistance of the blade without substantially increasing wear on the ceramic roll surface for which the blade is adapted for use.

Abstract: A process for printing an image (IC) on a lenticular lens material (12) with a printing press (10). A separate film negative (B, C, Y, M) is prepared for each color used in printing the image. One of the negatives (B) is selected and each of the other negatives, and the lens material, is registered with the selected negative. Each of negatives is adjusted to the selected negative so all of the negatives and the lens material are in registry with each other. Separate printing plates (18) are prepared from each of the negatives. The plates are mounted on the press at respective printing stations and the lens material is run through the press with each of the plates being used to print on the material. The plates are adjusted, as necessary, to align the plates and register the color dot patterns printed by each plate to the color printed by the plate made from the selected negative.