Think Laboratory Co., Ltd.

Kao Corporation

Uacj Corporation

Uacj Foil Corporation

Kabushiki Kaisha Think Laboratory

Tatsuo Shigeta

Yasufumi Ueda

Yuta Matsumoto

Kaku Shigeta

Ryuma Mizushima

Kazuki Watanabe

Shintaro Sugawara

Takahiro Sato

Hiroshi Nishio

Yukie Kitada

Tsutomu Sato

Kazuhiro Sukenari

Shigeru Suzuki

Shota Fujii

Hitoshi Horiuchi

Manabu Inoue

Noriko Matsumoto

Tomoyuki Konuma

An inkjet printer for preventing ink flow, color blurring and color mixing during multicolor printing when image formation is performed with aqueous ink on a web-shaped printing base material, and an inkjet printing method using the inkjet printer. The inkjet printer is configured to perform image formation by discharging aqueous ink to a web-shaped printing base material, and includes: a conveyance mechanism configured to continuously convey the web-shaped printing base material; a single-pass system inkjet head configured to discharge the aqueous ink to a surface of the web-shaped printing base material conveyed by the conveyance mechanism; and a surface pre-heating unit arranged on an upstream side of conveyance from the single-pass system inkjet head and configured to heat at least the surface of the web-shaped printing base material. Image formation is performed on the web-shaped printing base material heated by the surface pre-heating unit.

Inkjet printer and inkjet printing method using the same

Provided are an inkjet printer for both surface printing and back printing which is capable of performing both of surface printing and back printing while continuously conveying a web-shaped print base material () at high speed, and an inkjet printing method using the inkjet printer. The inkjet printer includes: a first white inkjet head () configured to discharge a white aqueous ink to a surface of the web-shaped print base material () in a case of surface printing; a first drum-type drying unit () configured to dry the white aqueous ink in the case of surface printing; a second white inkjet head () configured to discharge a white aqueous ink to a surface of the web-shaped print base material () in a case of back printing; and a second drum-type drying unit () configured to dry the white aqueous ink in the case of back printing.

Inkjet printer for both surface printing and back printing

Provided are an inkjet printer and an inkjet printing method with which, when image forming is performed on a web-shaped printing base material with inkjet inks, nozzles for discharging the inks are less liable to clog, streaks or density unevenness is less liable to occur at the time of solid printing, and a density of a single-color printing portion is easily increased. The inkjet printer for an inkjet ink is configured to perform image forming by discharging inkjet inks on a web-shaped printing base material by a single-pass method. The inkjet printer includes: a conveyance mechanism configured to continuously convey the web-shaped printing base material; a plurality of single-pass inkjet heads configured to discharge the inkjet inks to a front surface of the web-shaped printing base material conveyed by the conveyance mechanism; and a curing device configured to cure the inkjet inks discharged on the front surface of the web-shaped printing base material. Resolutions of the plurality of single-pass inkjet heads are varied depending on colors of the inkjet inks.

Inkjet printer and inkjet printing method

Provided is an inkjet printer with an unwinding portion and an adjacent winding portion in an uneven arrangement, which enables easy replacement of a web-shaped print base material on an unwinding portion and a winding portion for the web-shaped print base material at the time of printing on the web-shaped print base material with an aqueous ink, is capable of dealing with small-lot and wide-variety printing, and enables further space saving as compared to related arts. The inkjet printer includes: an unwinding portion for a web-shaped print base material; a single-pass inkjet head portion configured to discharge an aqueous ink to a surface of the web-shaped print base material unwound by a single-pass method; and an adjacent winding portion, which is provided adjacent to the unwinding portion, and is configured to wind the web-shaped print base material, wherein the unwinding portion and the adjacent winding portion are both installed side by side in an uneven arrangement on any one of an upstream side and a downstream side of the single-pass inkjet head portion.

Inkjet printer with unwinding part and adjacent winding part in uneven arrangement

Provided are a system and method of detecting an ink use amount of an inkjet printer, which allow detection of an ink use amount of an inkjet printer configured to perform image forming by discharging an inkjet ink on a web-shaped print base material by a single-pass method, and an inkjet printer. A system of detecting an ink use amount of an inkjet printer configured to perform image forming by discharging an inkjet ink on a web-shaped print base material by a single-pass method, includes: an ink tank mass measuring device configured to measure a mass of an ink tank; a comparison operation device configured to perform a comparison operation between a setting reference value of an ink use amount, which is prepared in advance, and a use amount measurement value of the ink tank mass measuring device; and a display device configured to display a warning when a difference between the use amount measurement value and the setting reference value exceeds a range set in advance.

System and method for detecting amount of ink used by inkjet printer and inkjet printer

Provided is a gripping portion structure of a gravure plate-making robot in which the accurate gripping of an unprocessed plate-making roll and the positioning accuracy during transfer of the unprocessed plate-making roll to each processing device can be improved by causing a gravure plate-making robot to exhibit a high gripping force when gripping the unprocessed plate-making roll. The gripping portion structure of a gravure plate-making robot to be used in a fully automatic gravure plate-making processing system for manufacturing a gravure plate-making roll by gripping and transferring an unprocessed plate-making roll to each processing device includes: a pair of gripping plates to be mounted on an arm distal end of the gravure plate-making robot, the pair of gripping plates being freely spaced widely or narrowly from each other, and being configured to grip both end portions of the unprocessed plate-making roll; and a gripping surface forming member provided on each of the pair of gripping plates, the gripping surface forming member having a gripping surface that is curved so as to be recessed toward a center of the end portion of the unprocessed plate-making roll to be gripped and having a non-slip function.

Gripper of a robot for gravure plate-making roll

Provided is a gravure printing method by which high printing density and excellent highlight suitability are obtained, even if a gravure plate having high resolution and reduced thickness is used. The gravure printing method comprises: using an aqueous ink having a Zahn cup #3 viscosity at 20&#xb0; C. of 11.0 seconds or more and 20.0 seconds or less, and having an evaporation rate of 30 mass % or less in a drying test, the drying test involving drying 1 g of the ink at a temperature of 40&#xb0; C. and an air flow of 1,400 L/min for 30 minutes; and transferring 1 ml/mor more and 7 ml/mor less of the ink onto a printing medium.

Gravure printing method

Provided is an aqueous gravure ink that is environmentally friendly, allows high-resolution printing by virtue of its excellent highlight suitability, and is excellent in drying property. The aqueous gravure ink comprises: a pigment; a polymer; a water-soluble organic solvent; a surfactant; and water, in which the water-soluble organic solvent has a boiling point of 100&#xb0; C. or more and 260&#xb0; C. or less, in which a content of the water-soluble organic solvent in the aqueous gravure ink is 10 mass % or more and 35 mass % or less, and in which a content of the water in the aqueous gravure ink is 50 mass % or more and 70 mass % or less.

Aqueous gravure ink

Provided is a printing-lamination inline system and method being suitable for manufacturing packages having various kinds of package designs in small quantity and being capable of performing inkjet printing and lamination in an inline manner. The printing-lamination inline system comprises: a first web-shaped base material supply unit configured to supply a first web-shaped base material; an inkjet printer of a single-pass system, which is configured to subject the first web-shaped base material to aqueous inkjet printing; an adhesive application unit configured to apply an adhesive to the first web-shaped base material subjected to the aqueous inkjet printing; a second web-shaped base material supply unit configured to supply a second web-shaped base material so that the second web-shaped base material is bonded to the first web-shaped base material; a lamination unit configured to subject the first web-shaped base material and the second web-shaped base material to lamination; and an aging box configured to cause aging of a laminate film obtained by the lamination.

Inkjet printing-lamination inline system and method

Provided is a fully automatic gravure plate-making processing system capable of manufacturing a gravure plate-making roll more quickly as compared to a conventional case, achieving space saving, performing an unattended operation even in the nighttime, and reducing dust between individual processes. The fully automatic gravure plate-making processing system includes: a first industrial robot for chucking and handling an unprocessed plate-making roll; a second industrial robot for chucking and handling the unprocessed plate-making roll; a roll stock apparatus, a photosensitive film coating apparatus, a laser exposure apparatus, an ultrasonic cleaning apparatus with a drying function, a grinding wheel polishing apparatus, and a paper polishing apparatus, which serve as processing apparatus arranged in a handling area of the first industrial robot; and a degreasing apparatus, a copper plating apparatus, a developing apparatus, an etching apparatus, a resist removal apparatus, a surface hardening film forming apparatus, and an ultrasonic cleaning apparatus, which serve as processing apparatus arranged in a handling area of the second industrial robot, to thereby perform plate-making processing.

Full-automatic gravure plate-making processing system

An ink jet printer, for both back-surface printing and front-surface printing, forms an image with aqueous ink on a web-shaped printing base material by any of the back-surface printing and the front-surface printing. An ink jet printing method uses the ink jet printer. The ink jet printer includes: a conveyance mechanism configured to continuously convey the web-shaped printing base material in forward and reverse directions; a single-pass system ink jet head configured to discharge white aqueous ink to a surface of the web-shaped printing base material conveyed by the conveyance mechanism; a single-pass system ink jet head configured to discharge non-white aqueous ink to the surface of the web-shaped printing base material conveyed by the conveyance mechanism; and a white ink drying device with a drying zone for drying the surface of the web-shaped printing base material having the white aqueous ink adhering thereto.

Ink jet printer and ink jet printing method using the same

The present invention relates to an ink-jet printing method that is capable of obtaining good printed materials that are free of occurrence of color migration and deformation of a printing medium even when printed on a transparent resin printing medium using a water-based ink containing a white ink, and a black or chromatic ink. The present invention provides an ink-jet printing method including the step of ejecting a water-based ink onto a printing medium using a printing apparatus to print characters or images on the printing medium, said printing apparatus including an ink-jet printing head that ejects the water-based ink onto the printing medium that is transported in a feeding direction thereof; and an drying mechanism that is disposed on a downstream side in a feeding direction of the printing medium, in which the printing medium is in the form of a transparent resin printing medium, and the water-based ink includes a white ink, and a black or chromatic ink, and in which the drying mechanism blows a superheated steam that is heated to a temperature of 100 to 180&#xb0; C. onto at least one of a printing surface and an opposite surface of the printing medium.

Ink jet recording method

The present invention relates to an ink-jet printing method that is capable of obtaining good printed materials that are free of occurrence of color migration and deformation of a printing medium even when printed on a resin printing medium. The present invention provides an ink-jet printing method using a water-based ink containing a black ink, a chromatic ink and a white ink which each contain a pigment (A), an organic solvent (C) having a boiling point of not lower than 90&#xb0; C. and lower than 250&#xb0; C., and water, said method including step 1 of ejecting at least one water-based ink selected from the group consisting of the black ink and the chromatic ink onto a transparent resin printing medium to print an image 1 on the printing medium; step 2 of ejecting the white ink onto the resulting image 1 to print a white image that covers the image 1 on the printing medium; and step 3 of heating and drying the resulting printed material from a side of a surface of the printing medium on which the white image is formed, using an infrared heater.

A gravure printing roll that enables printing of fine dots with a size close to that of cells and enables printing on a print subject, such as a printing substrate, without changing the appearance of the print subject. The gravure printing roll includes: a gravure printing roll body; and cells formed in a peripheral surface of the gravure printing roll body. Each of the cells has an opening with a ratio between a dimension in a circumferential direction of the gravure printing roll body and a dimension in an axial center direction of the gravure printing roll body (dimension in the circumferential direction/dimension in the axial center direction) being 1.15 to 7, and have an opening area of 3900 &#x3bc;mor smaller.

Gravure printing roll

The present invention relates to an ink-jet printing apparatus that is capable of obtaining printed materials that are free of occurrence of color migration and have good appearance even when printed on a resin printing medium using a water-based ink, and an ink-jet printing method. The present invention provides an ink-jet printing apparatus including an ink-jet printing head that ejects a water-based ink onto a resin printing medium that is transported in a feeding direction thereof, and an under heater that heats the printing medium from a rear side surface of the printing medium opposed to a front side surface thereof which faces to the ink-jet printing head, in which the under heater is disposed at a position spaced at a distance of from 0.05 to 3.0 mm apart from the rear side surface of the printing medium upon printing, and an ink-jet printing method using the ink-jet printing apparatus.

Growing community of inventors

Chiba, Japan

Tatsuo Shigeta