Abstract: The present invention is a device for mounting a keyboard to a base for positioning the keyboard in a backward tilted position and for use by a hand of an operator. The keyboard has a front end, a rear end, a plurality of keys each having an uppermost surface, and an uppermost keyplane defined by the uppermost surface of the keys. In one embodiment, the device comprises first and second bracket members engagable with the base. The device further comprises a support tray comprising a support surface and a keyboard stop member. The support surface has a front portion and a rear portion and is adapted to support the keyboard. The support tray is engaged with the first and second brackets such that the keyboard may be orientated in a backward tilted position which is defined by the rear end of the keyboard being disposed below the front end of the keyboard and the uppermost keyplane being tilted backwards.

Abstract: A printer, in particular of the type used for printing cheques with magnetic ink, comprises a control device for advancing a ribbon at a velocity substantially equal to the velocity of documents. The velocity of documents and the ribbon are controlled by an electronic unit which drives respectively a first motor and a second motor. The control device includes a presser means comprised of a pair of rollers urged against a motor driven roller. This arrangement enables the precise control of the velocity at which the ribbon is advanced. Downstream of the control device, the combined action of a first temporary take up device outside the cartridge and a second permanent take up device inside the cartridge assures the insertion of used ribbon into the cartridge and its winding around a reel by means of a third motor timely controlled by the electronic unit.

Abstract: The number of pulses N corresponding to the gradation level of a print dot is read out from a table and stored in a counter 63 (S1). The first pulse is applied to the heating elements for the duration T.sub.1 (S4) and is stopped for the duration T.sub.off (S6). The number of pulses N is read out and restored in the counter after the subtraction of 1 therefrom (S7). The second pulse is applied for the duration T.sub.2 (S9) and then interrupted for the duration T.sub.off (S11). The number of pulses N is read out and, after 1 subtracted therefrom, is restored (S12). If the number of pulses N read out is not zero, the step for the application of pulses for the duration T.sub.2 (S9) and subsequent steps are repeated. If the number of pulses N is zero, the application of pulses is terminated (S13).

Abstract: A type of multimedia keyboard device, designed with two positioning depressions at the bottom of casing of a keyboard device, between said two positioning depressions is the formation of a separating unit, said positioning depressions and separating unit will be properly positioned between the user's thighs and on his lap, on one side or two sides of the casing is the design of a handgrip, at somewhere suitable for operation on the left and two sides of the casing is the design of press keys; so designed that it will be suitable especially for applications to wireless remote control keyboard, and will achieve such purposes that the keyboard may be positioned on the user's lap, may be held in both hands and its keys may be conveniently pressed.

Abstract: The present invention relates to a label printing apparatus for printing image data onto a tape. The label printing apparatus has a memory for storing image data to be printed onto the tape, a print head for recording the image data dot wise onto the tape in subsequent printing cycles, a platen for conveying the recording medium relative to the print head and means for determining the number of dots to be activated in each printing cycle. In order to obtain high print quality, a speed adjuster is provided to control the speed of the platen in response to the number of image data stored in the memory and the number of dots to be activated in the present printing cycle. The present invention also relates to a method for controlling the platen and the print head to avoid misalignment of subsequent printing lines, when the platen must stop due to lack of data in the memory.

Abstract: A method for printing a reduced size of image according to a paper width by detecting a paper width, which is made up of the steps of detecting a maximum size of printing data after receiving a printing data from a host computer, and printing a reduced printing data in case of a size of the printing data being larger than the paper width. A reflective optical sensor is moved over the paper so that the reflected state of an emitted light by the paper is used for detecting the width.

Abstract: A method for dampening a printing form for offset printing wherein a quantity of dampener applied to the printing form by transfer rollers is controlled by adjusting the rpm of one of the transfer rollers in accordance with the rotary angle position of a channel or gap of a form cylinder carrying the printing form includes periodically varying the rpm of at least one of the transfer rollers during each revolution of the form cylinder.

Abstract: A printing machine roller, especially an ink roller, and preferably an ink distributor roller, with a coating of the entire outer cylindrical surface. The coating consists of a support matrix of a good heat-conducting and low-wear metal, e.g., nickel or aluminum-silicon alloy and graphite or plastic particles, e.g., of polyester, inlaid into the metal matrix. The coating is produced by thermal spraying, preferably plasma spraying or flame spraying. The residual porosity of the coating can be varied within wide limits based on process requirements. This residual porosity also permits the ink-friendliness to be varied within wide limits via sealing with an ink-friendly plastic. The roughness of such layers can be adjusted virtually as desired to the individual requirements of the offset process.

Abstract: This invention is a clamping strip attached to a flexible sheet, such as screen printing fabric, that is shaped to enable it to lock into a channel. The strip comprises a first and a second leg joined to each other at an approximately right angle. The first leg is of a size so as to position into the recess on one side of the channel leaving enough room for at least one thickness of the flexible sheet. The second leg is of a size so as to position within the channel at the same time as the first leg is positioned. The flexible sheet is affixed to the strip and wraps around the first leg inside the recess and continues over a rounded edge above the recess. With the strip and attached flexible sheet positioned into the channel with the flexible sheet wrapped over the rounded edge, a pulling or tensioning of the flexible sheet will cause the strip and flexible sheet to become locked in the channel.

Abstract: The present invention is an ink container for use in an ink jet printing system. The printing system has a printhead under control of printing system electronics and an ink container receiving station for providing ink to the printhead. The replaceable ink container includes a plurality of container interfacing features positioned on the ink container to engage corresponding ink container receiving station interfacing features. The ink container interfacing features are disposed and arranged to allow a plurality of different sizes of the ink container to be installed at a particular location of the receiving station. The ink container also includes an information storage device that provides information indicative of a volume of ink contained in said ink container.

Abstract: There is disclosed an ink roller assembly and a method of making an ink roller assembly. The assembly includes a base comprised of closely spaced connected discs providing capillary chambers and a porous sleeve. The method uses air under pressure or vacuum to expand the porous sleeve while the sleeve is being slipped onto the base. The sleeve has an internal diameter less than the external diameter of the base.

Abstract: A printing unit of rotary printing presses with a cleaning device is disclosed wherein the cleaning device can be applied against the surface of a cylinder to be cleaned. The cleaning device has a driven roller located in a housing, which roller is in the vicinity of an opening in the housing, which opening faces the cylinder. The cleaning device also has a cleaning agent feed device corresponding to the washing roller, and a wiper strip, whereby the cleaning device extends over the length of the cylindrical surface of the cylinder, and contains structure for the easy removal of the dirty cleaning fluid.

Abstract: Thermal printer with a thermal head (16) for image-wise heating a heat-sensitive sheet (38) according to an elongate printing zone, transverse with respect to the sheet, and a rotatable print drum (15) for conveying such sheet past such thermal head while the head is urged towards the drum, which is provided with a pressure roller (17) for urging a sheet section, downstream of the printing zone, onto the print drum in order to establish a contact angle alpha between the sheet and the print drum. (FIG.

Abstract: A computer keyboard consists of keys which are arranged in groups according to five different patterns for enhancing the key-in efficiency. The first and the second patterns are respectively composed of four sets of specific keys which are arranged in group and covered with four different colors. The third and fourth patterns consist respectively of five sets of specific keys which are grouped and covered with five different colors. The fifth pattern consists of seven sets of specific keys which are grouped and covered with seven different colors.

Abstract: To prevent a positional displacement of a screen mask in accordance with movement of a squeegee, a single squeegee device and a printing agent feeding device moves in synchronism with each other along a guide member. A squeegee elevated/lowered at a predetermined timing is mounted at a lower end of the squeegee device. A printing agent scraping device is mounted at a lower end of said printing agent feeding device. The printing agent scraping device is structured by a scraping frame which is elevated and lowered at a predetermined timing and moves in a direction in contact with or away from the squeegee and a printing agent extruding plate which is retracted/projected at a predetermined timing within the scraping frame.

Abstract: A leading edge side shaft 6, a tail edge side shaft 12 and a pulling shaft 14 are interlocked with one another through gears. The gears are rotated by using rotation of the plate cylinder. A leading edge side part 10a of the plate 10 is clamped with a leading edge side clamp 4 in accordance with the rotation of the leading edge side shaft 6. Thereafter, a tail edge side part 10b of the plate 10 disposed on the cylinder surface of the plate cylinder 60 is clamped with a tail edge side clamp 5. The plate 10 is pulled in a plate tensioning direction as a result of moving the tail edge side clamp 5 in the direction of the arrow 90 in accordance with the rotation of the pulling shaft 14.

Abstract: A web with an embossed surface with a plurality of lows separated by a plurality of highs is provided with a shadow effect by passing the web between a pair of counterrotating rollers, a backup roller for supporting the web on its reverse surface and an ink application roller for applying ink to selected portions of the embossed surface of the web. The ink application roller is formed of a hard elastomeric material and its outer surface is engraved to have a plurality of highs corresponding to and engaging the lows of the embossed surface of the web and a plurality of lows corresponding to and overlying the highs on the embossed surface of the web.

Abstract: A plurality of spaced-apart deflector guides are positioned over the input platen of a printer. They are suspended from an elongated media shield which extends laterally across an input media path such that a leading edge of media can easily fit under both the media shield and deflector guides. Each deflector guide has a plurality of downward facing surfaces such as ribs for directing the media toward an input slot defined by a top surface of the input platen, a terminal edge of the deflector guides, and a terminal edge of the media shield. The spaces between the deflector guides are wide enough to allow both hands to be placed directly on the media adjacent to or between two deflector guides for easy manual manipulation of a leading edge of the media into general alignment with the input slot where it can be gripped between the main pick roller and opposing pinch wheels for feeding into a print zone on the printer. The invention is applicable to both sheet feed and rollfeed printer devices.

Abstract: An improved printing machine comprises: a frame, at least one cliche carrying roller fitted rotationally on the frame, the cliche carrying roller being interchangeable with cliche carrying rollers of different diameters, at least one inking roller fitted rotationally on the frame parallel to and in contact with the cliche carrying roller, the inking roller being mobile along an arc of circle to enable it to make contact with cliche carrying rollers of different diameters, at least one disk joined to each cliche carrying roller, at least one cam joined to the inking roller and in contact with the disk. Means are provided for automatically rotating the cam in relation to the movements of the inking roller to maintain the cam regulation of the inking roller with respect to the cliche carrying roller.

Abstract: A keyboard is provided having a lower frame with an elastic member installed on the surface thereof. An elevation plate is installed on the lower frame capable of ascending or descending by an elastic force of the elastic member. A pair of guide plates are separately installed above the elevation plate capable of moving toward or away from each other in a horizontal direction and having a plurality of key holes and guides. Switch units are respectively installed on the lower frame, above the elevation plate and on the bottom surface of the guide plate, and a linkage of key pad assemblies are each installed, capable of compressing or extending by being guided by a guide of the guide plate and having a key for operating a switch of the switch unit directly or by inserting in a key hole of the guide plate.