Abstract: A heat sensitive stencil is brought into contact with a thermal head having a plurality of heating resistors arranged in a row, is moved in a sub-scanning direction orthogonal to a direction in which the heating resistors are arranged, and is perforated in the dot matrix shape with selectively heated heating resistors. The heat sensitive stencil is made substantially only of a thermoplastic resin film. A width of a non-perforated portion of the heat sensitive stencil between two adjacent perforations is 20% or more of a pitch between two adjacent heating resistors in the main scanning direction.

Abstract: Disclosed a high-frequency core bobbin which comprises: a winding bobbin member on which a wingding is to be wound; a first bobbin member for accommodating therein a predetermined portion of the winding bobbin; a second bobbin member coupled with the first bobbin coaxially so as to cover a portion of the winding bobbin member exposed from the first bobbin member, or put on the first bobbin member in the axial direction so as to shut off a space portion of a portion opposite to the winding bobbin member; and a leading-out guide provided on the second bobbin member for insertion and leading-out of lead wires of the winding.

Abstract: In a stencil duplicating machine, uniform tension is applied to a stencil so that a new stencil is wound around a printing drum and a used stencil is taken up on a stencil take-up spool without being creased or stretched. A quantity of the stencil bearing an original image can be saved.

Abstract: In a printer comprising a printing means for performing printing on a continuous paper in response to a print data and a cutter unit for cutting the continuous paper in the paper width direction upon completion of printing, a printed paper needs to be sorted out easily and clearly depending on jobs. To meet the demand, the printer is provided with a rotary blade and a fixed blade which cut the continuous paper in the paper width direction which crosses perpendicularly to the paper feed direction and it is further provided with a carriage for holding the rotary blade so as to be movable in the paper width direction. The carriage has a shading piece. Sensors are disposed at the position corresponding to the position where the cutting amount of the paper in the paper width direction is set to be smaller than the entire paper width. When the sensors detect the shading piece, the rotary blade stops moving to thereby stop the cutting operation.

Abstract: In a thermal printer for performing printing on the printing surface of a tag which is drawn out from a tag roll and then held and conveyed by a platen and a line thermal head, the thermal printer comprises a thread sweeping means for sweeping away the threads which get on the printing surface of the tag and a tag guide means disposed downstream the conveying direction of the tag for bringing into contact with the side edge of the tag which is opposite to the other side edge thereof to which the threads are attached so that the threads which get on the printing surface of the tag are swept away by the thread sweeping means and the tag is conveyed in the manner that the threads do not contact the tag guide, which eventually prevents the threads from being caught by parts on the conveying route or prevents the tag from being printed on the printing surface thereof while the threads remain getting on the printing surface.

Abstract: A stencil duplicating machine comprises a rotary cylindrical drum, an ink supply disposed inside the rotary cylindrical drum, a stencil supply unit, a stencil take-up unit, and a stencil making section. The rotary cylindrical drum is adapted to support a stencil on an outer circumferential surface thereof and is rotatable with the stencil. During the printing process, the rotary cylindrical drum, stencil supply unit and stencil take-up unit rotate together.

Abstract: A switching power source control circuit comprising a comparator, a thin-out-processed pulse generator, a thinned-pulse detector, and a reset speed regulator, wherein: the comparator compares an output signal of an error amplifier with a variable reference voltage generated by the reference voltage regulator to generate a signal for performing thin-out operation in accordance with a voltage difference between the output signal of the error amplifier and the reference voltage; the thin-out-processed pulse generator generates thin-out-processed pulses on the basis of the output signal of the comparator; the thinned-out pulse detector detects the generation of thinned-out pulses or driving pulses while always monitoring the thin-out-processed pulses generated from the thin-out-processed pulse generator, and changes the reference voltage of the reference voltage regulator in the case where the thin-out rate is in a range of from 0 to 1/2 in the direction to make it difficult to perform thin-out operation to there

Abstract: In a stacker for successively stacking cut papers on a bottom plate, a winding shaft for winding a non-cut continuous paper therearound is provided on a back side plate so as to project substantially perpendicularly to the paper restriction surface of the back side plate. This structure of the stacker makes it possible to stack the cut papers successively on the bottom plate and also makes it possible to easily wind the continuous paper around the winding shaft. In the stacker for successively stacking cut papers therein by inserting a cut paper beneath the previous stacked papers comprising a paper press for pressing the stacked papers from the top surface thereof and a press force switching mechanism for contacting the paper press and applying press force to the stacked cut papers until the stack height of the stacked papers reaches a prescribed value and for releasing the application of the press force when the stack height of the stacked papers exceeds the prescribed value.

Abstract: The heat transfer ribbon can be held by a heat transfer ribbon feed roller and a heat transfer ribbon pinch roller and can be fed in the direction opposite to the normal feeding direction for printing and also effectively used even if there appears a large blank space between the printed portions on the paper by returning it by the length corresponding to such a blank space. Furthermore, since the heat transfer ribbon feed roller or the heat transfer ribbon pinch roller is provided with a mechanism for applying turning effort to give directly tension to the heat transfer ribbon, a given tension is always applied to the heat transfer ribbon to thereby prevent the wrinkle from generating thereon even if the outer diameter of the heat transfer ribbon wound around a supply roller is varied. Still furthermore, the heat transfer ribbon pinch roller and the paper pinch roller are integrated with each other to form a pinch roller unit for facilitating the assembly thereof and improving the maintenance thereof.

Abstract: A reliable, small and light stencil duplicating machine comprises a printing section, a sheet feeding section, and a sheet discharging section. The printing section includes a printing drum for wrapping a stencil thereon, a press roller and parts associated with a printing process. The sheet feeding section feeds each printing sheet into a space between the printing drum and the press roller. A printed sheet is stripped off from the printing drum by a sheet separating member of the sheet discharging section, and is discharged onto a tray.

Abstract: A face opposing type motor has a rotor yoke fixed to a hollow rotating shaft disposed in a non-contact bearing device; the non-contact bearing device having a fixed shaft inserted into the hollow rotating shaft; a rotor magnet held by the rotor yoke; and a driving coil substrate having a face opposed to the rotor magnet. The rotor yoke has a rotor magnet fitting portion fitted to an outer circumferential face of the rotor magnet so as to hold the rotor magnet by this rotor magnet fitting portion. In accordance with such a structure, it is possible to provide a reliable face opposing type motor having an excellent quality and cheaply manufactured by improving a system for holding a rotor magnet.

Abstract: A rewriteable card of the invention is composed of a thermally reversible thermosensitive recording material which changes reversibly between a slightly opaque state and a transparent state depending on a given heating condition wherein the rewriteable card includes a reference slightly opaque portion at the part thereof having the reflectance equivalent to a slight opacity state of the thermally reversible thermosensitive recording material in an early stage or a last stage of use of the rewriteable card. A method of judging the life of the rewriteable card is based on the result of detection of the reflectance on a printing slightly opaque portion and that on the reference slightly opaque portion, and a printing apparatus is provided with a card life judging device employing the judging method.

Abstract: A rewriteable card of the invention is composed of a thermally reversible thermosensitive recording material which changes reversibly between a slightly opaque state and a transparent state depending on a given heating condition wherein the rewriteable card includes a reference slightly opaque portion at the part thereof having the reflectance equivalent to a slight opacity state of the thermally reversible thermosensitive recording material in an early stage or a last stage of use of the rewriteable card. A method of judging the life of the rewriteable card is based on the result of detection of the reflectance on a printing slightly opaque portion and that on the reference slightly opaque portion, and a printing apparatus is provided with a card life judging device employing the judging method.

Abstract: A rewriteable card of the invention is composed of a thermally reversible thermosensitive recording material which changes reversibly between a slightly opaque state and a transparent state depending on a given heating condition wherein the rewriteable card is characterized in including a reference slightly opaque portion at the part thereof having the reflectance equivalent to slight opacity state of the thermally reversible thermosensitive recording material in the early stage or the last stage of use of the rewriteable card. A method of judging the life of the rewriteable card is based on the result of detection of the reflectance on a printing slightly opaque portion and that on the reference slightly opaque portion, and a printing apparatus is provided with a card life judging means employing the judging method.

Abstract: A method of manufacturing a printing master by forming perforations in a thermosensitive stencil paper. Thermal energy is applied by a thermal head to the stencil paper, the other side of the paper being free from contact with any other element at a location opposite the thermal head while thermal energy is applied.

Abstract: A stacker has a feed unit for feeding separate sheets in a direction, a stacking unit for stacking the separate sheets in a normal position, and a sheet classifying mechanism for shifting a sheet into a position different from the normal position, upstream of the stacking unit with respect to the direction. Sheets to be used to classify respective batches of sheets stacked by the stacking unit can selectively be shifted into the position different from the normal position by the sheet classifying mechanism. Since those shifted sheets can easily and clearly be recognized by the operator, the batches of stacked sheet can be sorted out with ease. The sheets remain sightly in appearance as no classifying ink mark is applied to those sheets used to classify the batches of stacked sheets.

Abstract: In detecting indices (references) provided on a base paper with a distance therebetween along the longitudinal direction of the base paper, wherein either passed or reflected light amount through or from the indices differs, by a light detector positioned on a feed path while the indices are fed along the longitudinal direction, a threshold value is renewed each time when at least three indices are detected based upon peak values (maximum and minimum values) of output signals from the light detector. This is accomplished by renewing the threshold value by calculating the new threshold value based upon an intermediate or average value among the peak values between, for example, the indices in order to continue the indices position detecting process in an accurate fashion even if there is an abnormality in the base paper or others when the abnormality is minor such that it does not interfere with the subsequent process.

Abstract: The invention relates to a thermal printer and a printing method thereby, using a step motor for feeding a sheet of paper, a scanning type thermal head and a control unit by which the paper feeding operation is temporarily stopped and the printing operation is restarted after the stopped period. This thermal printer further comprises a delay drive unit which drives the thermal head with delay of one or two clock periods, predetermined as a control parameter for this printing operation, by a phase switch timing point for the step motor, in response to the time-lag defined by the phase switch timing point to an actual paper feeding motion; and a pre-print unit which outputs a command signal to begin the printing operation of the thermal head for printing one or more times the print data which follows the final print data of when the paper feeding operation was stopped, prior to the above described regular drive operation of the thermal head at the restart of the printing operation.

Abstract: The invention relates to a bar code label printer including a label sheet feeding unit for feeding a label sheet on which plural labels are adhered to at regular intervals, a printing unit for printing a bar code on the respective labels, a label peeling unit for peeling the printed labels from the label sheet, a sheet drawing unit for drawing the label sheet after the peeling unit, a bar code verifying unit for verifying the bar code printed on the label to detect an ineffective bar code, a re-printing unit for re-printing the same bar code as the ineffective bar code on the next label when the bar code verifying unit detects the ineffective bar code, and an ineffective bar code label remaining unit for remaining the ineffective bar code label on the label sheet without peeling. A bar code label issuing method uses the above described bar code label printer to issue only effective bar code label in an automatically control manner.

Abstract: In a stacker, where a stopper for aligning the front end of the papers to be stacked being detachable within a bottom plate of a paper receiver by a magnetic force, a paper feed means being provided along the paper feed direction in a manner such that the feed surface projects slightly above the bottom plate, a projection being provided at the bottom of the stopper in a manner such that it extends in parallel with the feed surface while not projecting above the feed surface of the feed belt, thereby letting the stopper moveable at any position along the paper feed direction in order to adjust the paper feed depth corresponding to the length of the fed papers, the papers can be fed by the feed belt and stacked without fail and further the stacked papers can be taken out by raising the stopper from the bottom plate while the stacked papers are raised by the projection.