Abstract: For a line head in an ink jet recorder wherein the line head comprises a plurality of long narrow rectangular plate like nozzle heads which are inclined together in a direction relative to that in which they are disposed side by side in a line in the line head, the invention is designed to be capable of wiping ink as well that gets into gaps between adjacent nozzle heads. To this end, an elastically deformable blade 13 is used that is brought into pressure contact with nozzle faces of a line head 23 and moved in a direction in which nozzle heads 24 are inclined while maintaining the blade 13 under pressure to cause it to be deformed against the nozzle faces as it is moved. Also, contaminants adhered on the blade by the wiping action is flushed with cleaning liquid rather than by a contaminant removal member.

Abstract: In order to maintain ink supply pressure to a recording head constant while supplying the recording head with ink with an minimum of air entrained therein, the invention provides an ink supplier which comprises a main ink reservoir, a subsidiary ink reservoir connected to the main ink reservoir for replenishment with ink from the main ink reservoir and a means whereby a position head of the ink liquid level in the subsidiary ink reservoir is maintained substantially constant relative to a printing head face of the recording head. Included preferably also are a deaerator associated with the subsidiary ink reservoir for removing air from ink therein and a float floating on ink in the subsidiary ink reservoir.

Abstract: In order to allow the use of an ink jet printing head of drop-on-demand type and with an ink nozzle assembly having a predetermined length in a direction of travel of a paper web to perform high precision and high speed printing, the ink jet printing head (2) is disposed relative to the traveling paper web (4) at a position such that the nozzle assembly (2a) lies opposed to a linearly traveling surface area of paper web that is leaving from a guide roller (3) immediately after the traveling paper web has had its wrapping contact with the same or a linearly traveling surface area of paper web that is approaching a guide roller (3) immediately before the traveling paper web has its wrapping contact with the same.

Abstract: A newspaper producing method can produce a plurality kinds of newspapers different in page numbers and colors by using a single printing unit. This method includes a plurality of printing cycles, each of which produces a plurality of lateral printed rows on each side of a continuous web, with each row having different contents relative to each other, with each row having at least two printed segments in a width direction of the continuous web, and with rows on opposite sides of the continuous web corresponding to each other. This printed continuous web is cut with respect to each of the lateral printed rows and each two-page spread of newspaper, and these cut portions are set and are delivered for every printing cycle. Each set of these portions is folded at a longitudinal central portion of a two-page spread thereof.

Abstract: A printing machine includes two printing units, each comprising a web feed section, a web printing section connected to the web feed section and a web treating section connected to the web printing section, in which a single-side surface of a continuous web is printed at each of the web printing sections. The printing machine also includes a turn/transfer section at which two the printing units are operatively connected and the continuous web printed by one of the two web printing sections is transferred to the other one thereof through turning and transferring treatment of the continuous web. The printing machine is capable of carrying out double-side printing and single side printing and improving printing efficiency with a relatively small location space or site.

Abstract: An apparatus is operable to print both sides of a web using two sets of ink-jet printers. A first set of printers are aligned horizontally, and so are the second set, with a vertical spacing between the first set and the second set. Paid out from its roll, the web is first fed forwardly past the first set of ink-jet printers so as to be printed on one side thereof, then reversely past the second set to be printed on the other side. The web can be guided solely by parallel rollers without the use of turning bars.

Abstract: A newspaper producing method of the present invention can produce a plurality kinds of newspapers different in page numbers and colors by using a single printing unit. This method includes a plurality of printing cycles, each in which a plurality of lateral printing rows having different contents from each other and each having at least two printing surfaces in a width direction of the continuous web are printed on both sides of the continuous web correspondingly to each other, the printed continuous web is cut with respect to each of the lateral printed rows and each tow-page spread of newspaper, and the cut webs are set and are delivered at every printing cycle. Each set of the webs is folded at a longitudinal central portion of two-page spread thereof.

Abstract: A printing machine includes two printing units, each comprising a web feed section, a web printing section connected to the web feed section and a web treating section connected to the web printing section, in which single-side surface of a continuous web is printed at each of the web printing sections, and an turn/transfer section at which two printing units are operatively connected and the continuous web printed by one of the two web printing sections is transferred to the other one thereof through turning and transferring treatment of the continuous web.

Abstract: An apparatus for printing both sides of a web by two sets of ink-jet printers. A first set of printers are aligned horizontally, and so are the second set, with a vertical spacing from the first set. Paid out from its roll, the web is first fed forwardly past the first set of ink-jet printers thereby to be printed on one side thereof, then reversely past the second set thereby to be printed on the other side. The web can be guided solely by parallel rollers without use of turning bars.

Abstract: An arbitrarily positioned lateral perforation forming apparatus can form a lateral perforation at an arbitrary position or selected position in a continuous web paper at high precision by a simple control system with small control amount. A lateral roulette cylinder projecting a lateral roulette edge on its outer periphery, arranged on one side of the continuous web paper and rotating in a traveling direction of the continuous web paper; and a receptacle cylinder projecting an edge projecting portion opposing to the lateral roulette edge of the lateral roulette cylinder on its outer periphery, arranged on the other side of the continuous web paper, rotating in the traveling direction of the continuous web paper, and forming a lateral perforation in the continuous web paper when the edge receptacle portion opposes the roulette edge; are rotated in synchronism with traveling of the continuous web paper in the drive system.

Abstract: An arbitrarily positioned longitudinal perforation forming apparatus includes a longitudinal roulette cylinder composed of a first rotary shaft arranged on one side of a continuous web paper and at least one disc-shaped longitudinal roulette edge supported on the first rotary shaft so as to be adjustably positioned in an axial direction of the first rotary shaft. The apparatus further includes a receptacle cylinder composed of a second rotary shaft arranged on the other side of the continuous web paper in parallel relationship with the first rotary shaft and at least one disc-shaped edge receptacle plate supported so as to be adjustably positioned in an axial direction of the second rotary shaft. A projecting edge receptacle portion on the outer periphery of the edge receptacle plate opposes the longitudinal perforation edge of the longitudinal roulette cylinder.

Abstract: A web-fed offset printing press has printing units each comprising a plate cylinder, a blanket cylinder, and an impression cylinder, the impression cylinder being movable into and out of rolling engagement with the blanket cylinder via the web. A first printing unit prints a first image portion on the web at prescribed spacings, by moving the impression cylinder away from the blanket cylinder each time one first image portion is printed. A second printing unit prints a second image portion on the spacings left on the web by the first printing unit, also by moving the impression cylinder away from the blanket cylinder each time one second image portion is printed. A variable speed motor rotates each blanket cylinder, while each time the associated impression cylinder is held away to create a space on the web for causing printing of the first or the second printing portion at required spacings.

Abstract: An ink jet printer of the type having a plurality or multiplicity of ink jet heads for printing as many characters on a continuous strip of paper or the like traveling between a pair of guide rollers or the like. In order to prevent the strip from fluttering while traveling the elongate distance between the pair of guide rollers, one or more intermediate guide rollers are provided therebetween, in positions offset from a plane tangent to both guide rollers toward one side of the plane opposite to the side where the guide rollers are located. At least two ink jet heads may be provided between every two neighboring pair of guide and intermediate guide rollers.

Abstract: The thin film transistor of this invention is formed on a substrate and includes an active layer and a first insulating film and a second insulating film sandwiching the active layer, wherein the overall polarity of fixed charges contained in the first insulating film is the reverse of the overall polarity of fixed charges contained in the second insulating film.

Abstract: A paper folding apparatus for a form printing machine includes an automatic paper cutting device having a cutting cylinder, which is disposed on an upstream side of an oscillatory shooter assembly, and which is adapted to form a cross line of cuts interposed by at least one small uncut portion in a continuous web of paper. The cutting cylinder is synchronously rotated with the paper for forming the cross line of cuts in response to a signal detected according to a predetermined length of travel of the continuous web of paper.

Abstract: A solar energy motor comprises a plurality of photovoltaic elements, such as solar cells, and armature coils unistructurally secured to a rotatable axis. The photovoltaic elements and the armature coils are electrically connected such that DC electromotive forces generated sequentially in the photovoltaic elements on which light beams are made incident are applied to the armature coils. Currents thus generated in the armature coils produce a torque in the presence of magnets.

Abstract: A method of makeready for a web printing press of the type wherein a web of paper or the like is fed through a print station and a perforating or like processing station driven by first and second drive shaft sections, respectively, which are normally held interconnected via a clutch for joint rotation and which are declutched to allow the print station to operate independently of the processing station. For reconnecting the two drive shaft sections in phase, the method comprises counting the number of revolutions of the first drive shaft section after the same has been declutched from the second drive shaft section, as by a CPU connected to receive electric pulses representative of the revolutions of the first drive shaft section. Upon reception of a clutch engage command from a manually actuable control panel, the CPU computes the additional number of revolutions required for the first drive shaft section before being reconnected in phase to the second drive shaft section.

Abstract: For image registration as in a web fed, multiple color printing press, printing plates are employed each bearing a registration mark having a first line segment extending transversely of the web and a second line segment extending aslantly of the web. The registration marks are so located on the printing plates that their images reproduced on the web are in a row arranged longitudinally of the web and with spacings from one to another. The printed images of the registration marks on the traveling web are sensed optically in order to determine the actual distances between them and between the first and second line segments of each registration mark. The thus ascertained actual distances are converted into corresponding numbers of reference pulses, and these pulse numbers are compared with reference pulse numbers representative of the proper distances.