Screen Holdings Co., Ltd.

Ricoh Company, Ltd.

Dainippon Screen Mfg. Co., Ltd.

Hiroyuki Fuchioka

Takaharu Yamamoto

Shinsuke Yamashita

Takeshi Katayama

Kazuki Fukui

Kunio Muraji

Seiya Nomura

Mitsuru Tanemoto

Hiroshi Iwasa

Tsuyoshi Okuda

Motoyuki Anno

Ryoichi Naoe

Shinji Ito

Akira Taiji

Disclosed is an inkjet printing apparatus including a connection switching device in a housing having external suction ports and an internal suction port being disposed at an equal distance from the center of rotation of a switching section, the external suction ports being connectable to a plurality of lines, the internal suction port being connected to a suction path for sucking the interior of the housing. The connection switching device selectively connects any of the plurality of external suction ports to the suction device by rotating the switching section Consequently, when the switching section is connected to the internal suction port, the interior of the housing is sucked, whereby ink is sucked from all the inkjet nozzles.

Inkjet printing apparatus

An inkjet printing apparatus is selectively composed of a plurality of transportation units, i.e., an inlet unit, a first intermediate unit, a second intermediate unit, and an outlet unit, having a transport path with slopes in side view of a transportation direction from a paper feeder to a take-up roller. When the transportation units are connected, a connecting part of the transportation unit is an inclination change point VP of the transport path. This achieves maintained tension to the print medium. As above, the inkjet printing apparatus may be selectively composed of a plurality of transportation units. Accordingly, the inkjet printing apparatus is constructible by combination of the units for various type productions, leading to a suppressed stock.

Printing apparatus

In an inkjet printing apparatus, heaters are enclosed with a heater casing, achieving accumulation of heated air and efficient performance of heating. A blowing fan blows air to the heaters. The heater casing includes a blowing port configured to narrow and blow warm air heated with the heaters to a transportation path outside the heater casing in a direction along the transportation path. The warm air narrowed at the blowing port obtains an increased air velocity thereof. In addition, uniform air-quantity distribution and uniform heat-quantity are obtainable. Moreover, the heaters face the transportation path. Consequently, the heaters are provided closer to the transportation path than a conventional external heater. This suppresses heat loss.

Drying apparatus and printing apparatus

An inkjet printing apparatus includes a plurality of nozzles for discharging ink, a CIS (Contact Image Sensor) type scanner for reading, as image data, charts for correction printed in the ink discharged from the nozzles, light emitters for emitting light to the charts for correction, a scanner controller for causing the scanner to scan the charts for correction with a plurality of read conditions, a correction table creator for creating nozzle shading correction tables based on the image data read, and a shading corrector for carrying out shading correction for the nozzles based on the correction tables.

Nozzle shading method, and an inkjet printing apparatus using same

Each unit of an inkjet printing station includes chains arranged along a transportation path of a web paper. A holding mechanism is fixedly arranged on the chain. The holding mechanism holds both ends of a paper passing bar to which the web paper is attached. Driving the chain with a handle causes the holding mechanism to move. The paper passing bar is delivered between the units adjoining each other. Therefore, the paper passing bar is movable from one end to the other end of the inkjet printing station formed by the units. Moreover, when specifications are changed for changing combination of the units, the combination can be made optionally.

An inkjet printing apparatus is provided, which has a simple construction, and is yet capable of reducing ink consumption and cleaning inkjet heads promptly. The inkjet printing apparatus includes connector caps-for connecting tubes communicating with suction caps, a cap supportsupporting the connector caps-, a switch elementfor switching to a sucking state one of the connector caps-to which the tubes are connected, and a stepping motorfor supporting and rotating the switch element

An inkjet printing apparatusincludes an inkjet head holderholding inkjet heads, and a pair of head cap holdersandholding head caps. When the inkjet head holderis in a raised position, the head cap holdersandare arranged as horizontally juxtaposed in a capping position, where the respective inkjet headsand the respective head capsare opposed to each other, below the inkjet head holder. When the inkjet head holderis in a lowered position, the head cap holdersandare arranged as vertically superposed in a withdrawn position laterally of a vertical movement area of the inkjet head holder

An original or a photosensitive film is held by a sheet holder and the sheet holder is fixed to the drum of an image reading scanner or an image recording scanner by a row of hooks planted on the drum. A row of holes corresponding to the row of hooks are formed at each of the opposing ends of the sheet holder. A hook is composed of: a stem, a lever rotatably attached with a pin to the stem, and a plate urged upward by a spring against the bottom of the lever. A plane is formed at a side of the bottom of the lever. First the levers of the hooks are raised upright and the holes of an end of the sheet holder are engaged with the hooks. After surrounding the drum with the sheet holder, the holes at the other end of the sheet holder are engaged with the hooks and the levers are turned to a lying position, where the levers are stable because the plate is urged upward against the side plane of the lever.

Growing community of inventors

Kyoto, Japan

Hiroyuki Fuchioka