Kabushiki Kaisha Tokyo Kikai Seisakusho

Kabushikigaisha Tokyo Kikai Seisakusho

K.k. Tokyo Kikai Seisakusho

Masayoshi Sato

Noriyuki Shiba

Kunio Suzuki

Yuko Tomita

Hideo Ohta

Yuichi Okamura

Takashi Iijima

Masahiko Miyoshi

Yukitoshi Takahashi

Shinji Kawashima

Noritake Harada

Tadashi Naoi

Yukoh Tomita

Yuzo Kawarazaki

Koichi Ueda

A web width adjusting device comprises a pressure force applying unit for applying pressure force to one side surface of a paper web which is successively traveled through two or more printing sections. Further the web width adjusting device may also include a counter pressure applying unit to apply counter pressure to the other side surface of the paper web. The pressure applying unit (and the counter pressure applying unit) deformes the paper web in a wavy surface which causes the width of the paper web to be shortened. The adjusting factors for the web width are controlled by automatic control system which detects traveling condition of the paper web, the generation of shears in printing, etc.

Width adjusting device and method for a paper web, and rotary lithographic press having same

A rotary press can vary the order of piling of printed traveling webs freely without requiring the bay window device to the construction and thus contributes for reducing size and weight of the rotary press. Also, the rotary press may facilitate repairing and maintenance operation so that repairing of each unit, maintenance, cleaning or so forth can be done certainly and quickly. The rotary press includes printing units and a folding unit arranged in parallel and further comprises moving means for re-arranging at least two of the units among set units and/or orientation means for turning at least one of the unit over 180.degree..

Method for varying the piling-order and/or turning webs upside down in a

A web feed roller is driven by a compact and simple web feed roller drive device included in the web feed roller. The web feed roller comprises a support shaft, a cylindrical hollow member rotatably supported on the support shaft, a stator provided with an electrically conductive member and fixed on the support shaft, a rotor fixed on the cylindrical hollow member to face with the stator, and an electrical connecting member connected to the conductive member of the stator. The web feed roller is electrically connected to a drive control system comprising a speed control device to control driving speed of the web feed roller, and a signal generating device for outputting a speed signal representing an actual speed of the web feed roller into the speed control device.

Web feed roller and drive control system thereof

A paper web threading apparatus for a rotary printing press, which occupies a minimum space required for the installation thereof and which enables automatic threading of a paper web to be conducted smoothly without applying any ineffective tension to the paper web which can be guided along all relevant paper web threading paths. The paper web threading apparatus includes a guide path provided along and laterally of the paper web threading path. A paper web guiding member includes a belt-shaped member having a guided end engaging portion adapted to engage with or secure the guided end of the paper web. A guiding member moving and driving device meshs with the paper we guiding member so as to move the latter along the guide path.

Paper web threading apparatus for rotary printing press

A multicolor lithographic rotary press comprises a plurality of printing sections arranged along a traveling line of paper web, a plurality of register adjusting means, a paper stretching means and a plurality of width adjusting means. Each of the printing sections further includes at least one of divided plate cylinder each divided section of which is independently moved in the axial direction and/or the circumferential direction. The paper stretching means is arranged at the downstream of the printing sections to apply a stretching force to the paper web. The width adjusting means is arranged between two sets of the printing sections to apply an adjusting force to the paper web. The register adjusting means is mechanically connected to each of the divided plate cylinders in the printing sections, and includes an adjusting mechanism for actuating the divided sections in response to a control unit connected to a sensor for detecting the lines and images printed on the paper web by each of the printing sections.

Multicolor lithographic rotary press

An ink-furnishing apparatus for continuously supplying ink to an ink cylinder from an ink rail even during high speed operation of the ink cylinder. An ink transfer surface of the ink rail has a first solid substance which is superior to a cast iron constituting the ink rail in terms of separation of ink therefrom. A peripheral surface of the ink cylinder has a second solid substance which is superior to the first solid substance in terms of adhesion of the ink thereon. While said first solid substance has a surface which makes a larger contact angle with a surface of the ink than a contact angle made between the surface of the ink and the surface of cast iron constituting said ink rail, said second solid substance has a surface which makes a smaller contact angle with the surface of the ink than said larger contact angle.

Ink-furnishing apparatus

A device for removing water from the returning portion of the peripheral surface of a meshed roll mounted in a planographic printing press comprises at least one roll for removing water pressed against the said returning portion. The peripheral surface of the roll is made of soft and smoothed material, or brushes project to the centrifugal direction from the peripheral surface of the roll. In one embodiment, a smooth roll of rubber or soft resin presses against the meshed roll, a second smooth roll of metal contacts it, a blade scrapes the second roll and a container receives recovered water from the blade.

Device for removing water from meshed roll

A roller with a doctor blade has both a harder material portion and a softer material portion provided on the peripheral surface in the same radius from the center of the roller, for achieving complete doctoring. The harder material portion forms a minimum belt-like line in a non-perpendicular direction with respect to the axis of the roller, and preventing wear by doctoring against the softer material portion, and limits the wear of the doctor blade, producing uniform wear without a fear of local wear. The softer material portion has maximum area provided between the turns of the belt-like line and facilitates the formation of cells for measuring and the use of a lipophilic material.

Liquid supply roller and method of making same

In an inking mechanism in a rotary press a doctor blade is provided to prevent the mixing into the ink of bubbles which cause the scattering of an ink mist upon bursting of the bubbles. The doctor blade can swing along the circumferential surface of eccentric sleeves supporting both ends of a fountain roll. A free end portion of the doctor blade contacts with a position just progressed in the rotative direction on that portion of the circumferential surface of a mesh roll to which ink is transferred from the fountain roll. A scraped ink returning plate is provided close to and along the circumferential surface of the fountain roll providing a streamline flow of the scraped ink without turbulent flow. The free end portion of the doctor blade can be displaced for cleaning and replacement.

Growing community of inventors

Kawasaki, Japan

Masayoshi Sato