I. Mer Co., Ltd.

I. Mar Planning Inc.

Other

Nippon National Seikan Company, Ltd.

Taiyo Corporation

Izume, Masayuki

Masayuki Izume

Kenjiro Yamasaki

Tadao Hashimoto

Yoshimi Aoyama

Mitomu Chishiki

A ductor roller for printing machines has a shaft provided with an air supply pipe, plural individual ductor rollers, and plural electromagnetic valves, both connected to the shaft. The individual ductor rollers advance pneumatically by the electromagnetic valves. The individual ductor rollers have housings that are associated with the shaft and configured to move forward and backward; roller members configured to contact with the ink fountain roller and an ink distribution roller; and bearings connecting the roller members to the housings. The electromagnetic valves are placed in the housings. Protection members for the electromagnetic valves are oil-resistant, have circularly cylindrical or arc-like covers, and are associated with the shaft. They cover the side ends of the housings and are placed in the clearance between the individual ductor rollers. The protection members do not need an exchange, discharge cleaning liquid for printing machines along troughs and prevent the electromagnetic valves from being contaminated by the cleaning liquid.

Printer ductor roller and electromagnetic valve protection member built into ductor roller

An ink fountain of an ink fountain device is provided with a fixed frame; a plate slidable on the upper surface of the plate; and an advancement and retraction mechanism advancing and retracting the plate with respect to the frame. The advancement and retraction mechanism comprises: a motor; a cam fixed to the output shaft of the motor which is integrally rotatable by rotation of the output shaft and has a cam surface shifted from an exact circle; and a rod in contact with the cam surface and advancing and retracting by the cam. The plate advances and retracts with respect to the frame by the advancement and retraction of the rod.

Printing machine and ink fountain device thereof, and method for cleaning periphery of ink fountain

An ink fountain device having a base; a plate; an advancing and retracting mechanism for advancing and retracting the plate along an advancing and retracting direction; and a thin sheet arranged on the base which has plural holes accommodating balls and is thinner in thickness than a diameter of the balls. The plate is arranged over the thin sheet and supported by the balls.

Ink fountain device

Plate cylinder driving devices of a printing machine are provided with a drive shaft driving the plate cylinder, a drive helical gear fixed to the drive shaft, and an anti-backlash helical gear rotatably connected to the drive shaft and is biased by at least a spring towards a direction for preventing backlash. Both the drive helical gear and the anti-backlash helical gear are engaged with the main gear, and a plate provided with plural holes accommodating rollers is provided between the drive helical gear and the anti-backlash helical gear. Friction between the anti-backlash gear and the drive gear is reduced by a simple mechanism in the plate cylinder driving devices in a printing machine.

Printing machine provided with plate cylinder driving device

Provided is a method of correcting printing misalignment in a printing apparatus that performs registration by using a printing misalignment inspection mark. This method is capable of improving registration accuracy and is capable of correcting the printing misalignment with higher accuracy. An image processor has printing misalignment value measurement means that measures a misalignment value with respect to a set position of the printing misalignment inspection mark that has been printed on an object. A printing misalignment inspection mark A is a hollow circle that is white inside, and the printing misalignment value measurement means measures the misalignment value with respect to the set position by using a white portion W of the printing misalignment inspection mark A.

Method of correcting printing misalignment in printing apparatus

A can inspection device includes a rotation device rotating cans, an imaging device taking images of rotating cans, and an image processor processing taken images. The imaging device includes a first camera taking an image of an entire can and a second camera taking an image of an opening-side end portion of the can. The image processor includes an image inspection means for inspecting whether printing is performed properly as compared with a master image by using the image taken by the first camera, a density measurement means for measuring densities in designated positions for respective colors by using the image taken by the first camera, and a printing misalignment value measurement means for measuring misalignment values with respect to set positions of printing misalignment inspection marks printed on the opening-side end portion of the can for respective colors by using the image taken by the second camera.

Can inspection device

A planning boat includes at least one tank provided on a bottom of the boat. The tank has, at a stern side, a wall through which a through hole is provided below a waterline. A hull of the planning boat includes a bottom plate that forms the bottom of the boat, right and left side plates that form sides of the boat and a bow, a transom plate that forms a stern, and a plurality of longitudinal vertical plates. The plurality of longitudinal vertical plates each extend between the transom plate and forward portions of the side plates along a sailing direction and each have a lower surface that is fixed to an upper surface of the bottom plate. The tank is formed by using the pair of longitudinal vertical plates of the existing planning boat.

Planing boat and method for manufacturing the same

A printing plate unit to be demountably mounted on a printing plate mounting portion of a plate cylinder includes a printing plate and a printing plate coupling member. A length of the printing plate coupling member is larger than a width of the printing plate so that the printing plate coupling member is provided with a projecting portion projecting from the printing plate formed cylindrically in an axial direction. The printing plate unit is fitted to the printing plate mounting portion from one end side, and is demounted from the same one end side by gripping the projecting portion of the printing plate coupling member in a state both end portions of the printing plate formed into a cylindrical shape are coupled to each other by the printing plate coupling member.

Printing plate unit

A dampening water amount regulating apparatusincludes a plurality of air supply boxesdisposed in a line in an axial direction of a water transfer rollerand each defines one air blowing portion. The air supply boxincludes a substantially U-shaped air passagethat allows air in an air supply chamberto pass along an outer peripheral surface of the water transfer rollerand supplies the same into an air discharge chamber. A valve mechanismthat increases and decreases an air amount is provided at a midsection of the air passage

Dampening apparatus for printer and printer having the same

A can printing apparatusincludes a main printerhaving plural plate cylindersfor printing different colors and performing printing onto side surfaces of cans, a secondary printerperforming additional printing to the side surfaces of the cans after the printing by the main printer, and a can inspection machineinspecting a printing state. The can inspection machineincludes a can rotation devicewhich rotates cans C, a can imaging devicewhich takes images of the cans C and an image processing devicewhich processes the taken images, and the secondary printerincludes a printing headwhich faces a side surface of a can held by the can rotation deviceof the can inspection machineand a processing unit which gives an instruction of printing to the printing headbased on a predetermined printing pattern and processing data of the image processing deviceof the can inspection machine

Can printing apparatus

An image processorprocessing taken images includes an image inspection meansfor inspecting whether printing is performed properly as compared with a master image by using the image of the entire can taken by a first camera, a density measurement meansfor measuring densities in designated positions for respective colors also by using the image of the entire can taken by the first camera, and a printing misalignment value measurement meansfor measuring misalignment values with respect to set positions of printing misalignment inspection marks printed on an opening-side end portion of a can for respective colors by using the image of the opening-side end portion of the can taken by the second camera.

Can printing apparatus and can inspection device

An ink supply unit is a unitized member having a casing accommodating components therein. A plurality of plate cylinders are arranged in a circumferential direction at predetermined intervals. The ink supply unit corresponding to the plate cylinder is disposed on a radially outer side of the plate cylinder. The ink supply unit can move between an operation position in which ink can be supplied to the plate cylinder and a standby position located further to a radially outer side than the operation position.

Printing apparatus

A printing plate unit automatic mounting apparatusincludes: a pressing memberinserted from a pressing member insertion openingand pressing an inner slideragainst a biasing force applied by a printing plate coupling member biasing apparatus, a retaining meansconfigured to retain and release the printing plate unitby retaining and releasing a projecting portionprovided on the printing plate unitand configured to serve as a gripping portion; and a drive apparatusconfigured to move the retaining meansin an axial direction of a plate drive shaft.

Printing plate unit, plate cylinder apparatus for printer, and printing plate unit automatic mounting apparatus

To attach a printing plate to a printer readily and accurately, and avoid necessity of a large space for the storage of the printing plate. A printing plate unitincludes a printing platein which a plate sectionis provided on a part of a front surface of a sheetmade of an elastic material and engaging protrusionsthat protrude toward a back surface and extend in a width direction are provided at both longitudinal ends, and a printing plate coupling memberthat is detachable from the printing plateand couples both the engaging protrusionsof the cylindrical printing plateto each other to keep the cylindrical shape of the printing plate

Printing plate unit, printing plate attachment device and printer

The present invention eliminates backlash between a drive helical gear and a driven helical gear and facilitates rotation of a driven gear member to increase rotational accuracy of a plate cylinder. A plate cylinder drive unit includes a plate cylinder drive shaft, a driven gear member having a driven helical gear that meshes with a drive helical gear and attached around the plate cylinder drive shaft, a position adjustment member moving the driven gear member to fix it at a predetermined position, a whirl-stop member attached to the plate cylinder drive shaft, a sandwiching member removably fixing the whirl-stop member to the driven gear member, a backlash eliminating helical gear disposed on one side of the driven helical gear, first springs bringing the backlash eliminating helical gear in pressure-contact with the driven helical gear, and second springs biasing the backlash eliminating helical gear to rotate it in a predetermined direction.

Growing community of inventors

Kyoto, Japan

Masayuki Izume