Abstract: It is desirable that ink and water be fully kneaded or distributed together when an inking unit 4 and a dampening unit 5 are in communication with each other. Accordingly, a dampening water communication path 17 which brings the inking unit 4 and the dampening unit 5 in and out of communication so that they can come in and out of contact with each other is provided, the dampening water communication path comprises a plurality of rollers including an oscillating roller 14 in rotational contact with an ink distributing roller 8 and an oscillating roller 16 in rotational contact with a dampening roller 10, and a roller interposed between them is a bridging roller 15 in rotational contact with one of these adjoining rollers and capable of coming in and out of contact with the other.

Abstract: To make a line head chassis detachable simply and easily in an inkjet recording apparatus, a jig for the line head chassis is provided which comprises: a first support member mounted on a table lateral to the inkjet head; a second support member mounted laterally to and lower than the first support member; a rail member mounted laterally to the first support member and having one end connected thereto; an upright support member having its lower end supported by the second support member adjustably in its height direction and its upper end connected to the other end of the rail member for supporting the rail member horizontally; a base table slidably supported on the rail member to move over a distance outward from a maintenance position; and a cradle means supported on the base table so as to be movable perpendicularly to a direction in which the base table moves for accepting the line head chassis, wherein one end of the rail member and the lower end of the upright support member are made engageable with/dis

Abstract: Disclosed are a method and an apparatus designed to make a window envelope rapidly using a water-soluble clarifying agent without causing an inconvenience in its window area. Upstream of an envelope making stage wherein a continuous paper while traveling along a continuous path of travel is successively folded, pasted and cut to form an envelope, a water-soluble clarifying agent is applied to an area on the continuous paper that is designed to become the transparent window in the envelope and the continuous paper carrying the clarifying agent is wound on a plurality of drying cylinders so that its surface carrying the clarifying agent faces outwards to dry the clarifying agent while holding the surface of paper carrying the clarifying agent out of contact with the drying cylinders.

Abstract: In an exchangeable cylinder type rotary press driven by a prime mover, it is made possible to make a print of any top-bottom length as desired, independently of a gear train that transmits power from the prime mover to an exchange cylinder unit.

Abstract: An ink jet recorder comprises: line heads (4) including a plurality of nozzle heads (41), main tanks (13) placed outside of the line heads (4) to store ink; an ink supply passage (13a, 49a, 49c) that connects the main tanks (13) to the associated nozzle heads (41), and distribution tanks (6) placed in each line head (4). The number of supply tube connections (67) provided in the distribution tank (6) is made smaller than that of the nozzle heads (41) arranged in the line head (4).

Abstract: To allow continuous paper to be printed a plurality of times with a time difference by ink jet printer equipment and dried each time of printing while preventing condensation from occurring on an ink discharge surface of print head at and after the second time of printing, there is provided a printing apparatus comprising: a plurality of trains of printing units each of which has print heads arranged along a direction in which a continuous sheet of paper travels and which are arranged parallel to one another as shifted mutually in position in a direction of width of the continuous sheet of paper; a dryer section in which a plurality of continuous sheets of paper from the plural printing unit trains can travel as mutually shifted in position in a direction of width of the continuous sheet of paper; a cooling roller unit disposed downstream of the dryer section and having a cooling roller on which the plurality of continuous sheets of paper from the dryer section can be wound as mutually shifted in position in

Abstract: A developer feeder for wet developing apparatus having a developing roller rotationally engaged with a photoconductor drum and a feed roll in part immersed in a liquid developer and rotationally engaged with the developing roller for supplying the liquid developer onto the developing roller can be made to furnish the peripheral surface of the developing roller with the liquid developer even in thickness by using a plurality of feed rollers which are not mesh rollers but whose peripheral surfaces are smooth and which are arranged circumferentially of the rotational developing roller.

Abstract: To make a line head chassis detachable simply and easily in an inkjet recording apparatus, a jig for the line head chassis is provided which comprises: a first support member mounted on a table lateral to the inkjet head; a second support member mounted laterally to and lower than the first support member; a rail member mounted laterally to the first support member and having one end connected thereto; an upright support member having its lower end supported by the second support member adjustably in its height direction and its upper end connected to the other end of the rail member for supporting the rail member horizontally; a base table slidably supported on the rail member to move over a distance outward from a maintenance position; and a cradle means supported on the base table so as to be movable perpendicularly to a direction in which the base table moves for accepting the line head chassis, wherein one end of the rail member and the lower end of the upright support member are made engageable with/dis

Abstract: An inkjet recording apparatus having a plurality of inkjet heads arranged along a paper conveyance line is disclosed, which is capable of collecting an ink mist efficiently without making the inkjet heads intricate in makeup.

Abstract: It is rendered possible to attach and detach an inkjet line head chassis to and from a controller housing in an inkjet recording apparatus. To this end, the inkjet recording apparatus in which the inkjet line head chassis (2) is detachably attached to a portion of the controller housing (1) comprises: a bracket (4) mounted to the controller housing and movable upward and downward, the bracket supporting the inkjet line head chassis so that the chassis can be attached and detached unidirectionally; a drive plate (18) mounted in the controller housing so as to be rotatable in a plane parallel to a direction in which the bracket is moved vertically; a link mechanism for coupling the drive plate and the bracket to move the bracket vertically when the dive plate is rotated; and a fluid cylinder (19) coupled to the drive plate.

Abstract: A rotary press is provided that prevents a print from contamination with a color different from a printing color. The rotary press comprising a printing unit made of a set of printing cylinders such as plate and blanket cylinders or plate and impression cylinders for printing paper; and a dryer disposed downstream of the printing unit for drying the paper printed, has a guide roller included therein for guiding the printed paper from the printing unit into the dryer wherein the guide roller has a diameter which is equal to, or a an integral multiple of, a diameter of a printing cylinder in the printing unit and is adapted to rotate synchronously with the printing cylinder and at a peripheral speed that is identical to that at which the printing cylinder is rotated.

Abstract: Disclosed are a method and an apparatus designed to make a window envelope rapidly using a water-soluble clarifying agent without causing an inconvenience in its window area. Upstream of an envelope making stage wherein a continuous paper while traveling along a continuous path of travel is successively folded, pasted and cut to form an envelope, a water-soluble clarifying agent is applied to an area on the continuous paper that is designed to become the transparent window in the envelope and the continuous paper carrying the clarifying agent is wound on a plurality of drying cylinders so that its surface carrying the clarifying agent faces outwards to dry the clarifying agent while holding the surface of paper carrying the clarifying agent out of contact with the drying cylinders.

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: A form dampening roller driving apparatus in which to obviate a hickey a slip is caused to occur between a form dampening roller and a plate cylinder in their mutual area of contact by rotationally driving the form dampening roller and the plate cylinder so they rotate having a difference in peripheral speed between them, and wherein the peripheral speed of the form dampening roller is made variable as desired to make the slip ratio between it and the plate cylinder in their mutual area of contact variable as desired. To this end, the form dampening roller is geared to a vibrator roller, and independent of a main motor for rotationally driving the plate cylinder there is provided a further motor for rotationally driving the form dampening roller independently of the plate cylinder at a rate of rotation that is made arbitrarily variable.

Abstract: A rotary press is provided that prevents a print from contamination with a color different from a printing color. The rotary press comprising a printing unit made of a set of printing cylinders such as plate and blanket cylinders or plate and impression cylinders for printing paper; and a dryer disposed downstream of the printing unit for drying the paper printed, has a guide roller included therein for guiding the printed paper from the printing unit into the dryer wherein the guide roller has a diameter which is equal to, or a an integral multiple of, a diameter of a printing cylinder in the printing unit and is adapted to rotate synchronously with the printing cylinder and at a peripheral speed that is identical to that at which the printing cylinder is rotated.

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: A paper web folding and cutting apparatus for a form printing machine includes a paper web traveling path which enables a continuous paper web to travel at a predetermined traveling speed. A cut portion forming device is disposed on the paper web traveling path and is adapted to form a cut portion formed in a line of a plurality of cuts. Each line of the cuts has at least one uncut portion, at every top and bottom directional dimension of the continuous paper web to be folded. Also, an oscillatory shooter assembly is disposed on the paper web traveling path on a downstream side of the cut forming means in a paper web traveling direction. The oscillatory shooter assembly is provided with a counter roller and a nozzle roller at a lower end portion thereof. The rollers are rotated at a peripheral speed which is faster than the paper web traveling speed, and the nozzle roller is movable into and out of contact with the counter roller.