Komori Corporation

Kazuhiro Maejima

Toshio Miyamoto

Hiroyuki Sugiyama

Hisaaki Oyoshi

Takeshi Asai

Isao Funabashi

Shoichi Ichimura

Toshiharu Takemata

Toshio Miyamato

A printing/coating method includes the steps of transferring highly reactive ink/varnish which cures with a low light energy onto a transfer object, and irradiating the transfer object, onto which the highly reactive ink/varnish is transferred, with light in the wavelength range, in which no ozone is generated, to cure the highly reactive ink/varnish on the transfer object. A printing/coating apparatus is also disclosed.

Printing/coating method and apparatus

A plate exchange apparatus for a printing press includes a plate guide member and operating members. The plate guide member guides one end of a plate into plate gripper surfaces of a leading-side plate lockup device when the one end of the plate opposes the plate gripper surfaces of the leading-side plate lockup device, and inserts the plate into plate gripper surfaces of a trailing-side plate lockup device under pressure when the other end of the plate wound around a plate cylinder opposes the plate gripper surfaces of the trailing-side plate lockup device. The operating members press the plate guide member against a circumferential surface of the plate cylinder until the other end of the plate is inserted under pressure after the one end of the plate is gripped.

Plate exchange apparatus for printing press

An apparatus for mounting a plate on a plate cylinder includes a plate lockup device, a reference pin, a detecting sensor, and a lamp. The plate lockup device is provided in a gap formed in a circumferential surface of the plate cylinder. The reference pin is supported by a gripper portion of the plate lockup device and engaged with a reference pin hole formed at an insertion end of a plate when the plate is inserted into the gripper portion of the plate lockup device. The detecting sensor is arranged at a position corresponding to at least a bottom portion of the reference pin hole to electrically detect that the bottom portion of the reference pin hole contacts the reference pin. The lamp confirms and indicates insertion of the plate on the basis of an output from the detecting sensor.

Plate mounting apparatus for printing press

A plate mounted state confirming apparatus includes reference pins, a transmitting coupler, and a receiving coupler. The reference pins detect contact of an insertion end of a plate inserted in a gripper portion of a plate lockup device provided in a gap formed in an outer circumferential surface of a plate cylinder in an axial direction thereof. The transmitting coupler outputs a detection signal obtained by the reference pins as an electrical signal from a plate cylinder. The receiving coupler receives the electrical signal from the transmitting coupler outside the plate cylinder in a non-contact manner.

Plate mounted state confirming apparatus

A plate exchange apparatus for a printing press includes a plate holding unit and positioning members. The plate holding unit is supported on frames such that a distal end thereof is movable between an operative position and a retracted position. At the operative position, the distal end of the plate holding unit comes close to plate lockup devices disposed in a gap of a plate cylinder. The distal end of the plate holding unit is retracted from the operative position to the storing position. The positioning members are provided at the distal end of the plate holding unit to be brought into contact with a member on the plate cylinder when the plate holding unit is located at the operative position.

In a plate replacing apparatus for a printing press, a plate lockup opening/closing unit opens/closes leading- and trailing-side plate lockup devices upon pivotal movement of a cam shaft. A loader drive unit drives a loader on the plate replacing apparatus between an operation position where a distal end portion of the loader comes close to the plate lockup devices and a storage position where the distal end portion of the loader is separated from the plate lockup devices. A plate removal unit grips an old plate released from the plate lockup devices and inserted into the loader upon rotation of the plate cylinder, and moves the old plate into the loader. A plate supply unit inserts a new plate loaded in the loader into the leading-side plate lockup device. A plate press unit presses the new plate inserted into the leading-side plate lockup device and wound around the circumferential surface of the plate cylinder and inserts the other end of the new plate into the trailing-side plate lockup device. A predetermined plate position stop unit pivots the plate cylinder to stop at a plate gripper position. A controller operates the above apparatus and units.

Plate replacing apparatus for a printing press

Method of replacing plate for printing press

A plate lockup apparatus for a printing press includes a leading-side lockup device, a trailing-side lockup device, and a cam mechanism. The trailing-side lockup device is located in the gap of the plate cylinder and grips a trailing edge of the plate, the trailing-side lockup device having a lockup table and a gripper plate, each having a plate gripper surface extending in a radial direction of the plate cylinder. The lockup table and the gripper plate are connected to each other at non-gripping ends thereof through a shaft. The cam mechanism has a cam, a cam surface of which is in contact with the lockup table. The cam mechanism is operated such that at a start of pivotal movement of the cam, the plate gripper surfaces of the lockup table and the gripper plate are closed to grip the plate, and at an end of pivotal movement of the cam, the lockup table and the gripper plate are moved together in a circumferential direction of the plate cylinder to tighten the gripped plate.

Plate lockup apparatus for sheet-fed press

A paper feeding/piling apparatus for a sheet-fed press includes a fork reciprocating unit, a fork unit lifting unit, and a piling/conveying unit. The fork reciprocating unit includes a fork support table supported between a pair of vertically movable right and left guide rails horizontally extending between the pile table and the auxiliary pile unit and reciprocated back and forth, and a plurality of forks supported by the fork support table and fitted in or removed from grooves of the pile board at an upper position upon reciprocal movement of the fork support table. The fork reciprocating unit has forward and backward limit positions detected by detectors. The fork unit lifting unit includes a guide rail drive unit, supported on apparatus frames, for vertically driving the guide rails, and detectors for regulating upper and lower limit positions of the guide rails. The piling/conveying unit includes a truck for mounting the pile board on which the next sheets are piled, and a truck drive unit for reciprocally driving the truck between the auxiliary pile position and the pile table. The piling/conveying unit has forward and backward limit positions regulated by detectors.

Growing community of inventors

Ibaraki, Japan

Kazuhiro Maejima