Abstract: A wiping device is equipped with a wiping blade that wipes an ink ejection surface of a nozzle row of an ink jet head, a cleansing tank that stores a cleansing solution and in which the wiping blade is immersed, and a shower unit that sprays the cleansing solution onto the wiping blade.

Abstract: A wiping device is equipped with a wiping blade that wipes an ink ejection surface of a nozzle row of an ink jet head, a cleansing tank that stores a cleansing solution and in which the wiping blade is immersed, and a shower unit that sprays the cleansing solution onto the wiping blade.

Abstract: An inkjet printing apparatus that performs printing by ejecting ink from an ink jet head onto a print medium includes a drying unit for drying a liquid which is contained in the print medium, a table on which the print medium is placed; and a gas flow generating unit for generating a gas flow in a space which is formed between the table and a surface of the print medium toward the side of the table.

Abstract: An inkjet head maintenance mechanism includes: an inkjet head including a nozzle plate with ejection ports arranged in the nozzle plate and configured to eject droplets of ink, and a protection plate stacked on the nozzle plate and having an opening formed at a position corresponding to the ejection ports and exposing the ejection ports to an outside; a cap configured to come into contact with the protection plate and surround the opening of the protection plate; and a controller configured to detect an on-off state of a power supply of an inkjet printer to which the inkjet head is attached and adjust a contact pressure of the cap onto the protection plate depending on the detected on-off state of the power supply.

Abstract: A controller forms an image on a print medium by alternately repeating: a first operation of driving an inkjet head to eject ink from the inkjet head to the print medium while driving a main scanning driver to move the inkjet head in a main scanning direction; and a second operation of driving a sub-scanning driver to move a shuttle in the sub-scanning direction. The controller performs a multi-stage brake control to stop the shuttle in the second operation, and in a second stage and a stage after the second stage of the multi-stage brake control, apply brake to the shuttle at such a timing that a direction of vibration of the shuttle and a direction of force of inertia of the shuttle in braking of the shuttle are opposite to each other.

Abstract: An inkjet printing apparatus that performs printing by ejecting ink from an ink jet head onto a print medium includes a drying unit for drying a liquid which is contained in the print medium, a table on which the print medium is placed; and a gas flow generating unit for generating a gas flow in a space which is formed between the table and a surface of the print medium toward the side of the table.

Abstract: A controlling unit causes a valve and a pump to perform the following operations: (i) the controlling unit closes the valve and drives the pump in initial filling of an inkjet head with ink; (ii) the controlling unit stops the pump and opens the valve on or after a time point when a tip of ink within an ink route reaches a prescribed position, which is higher than that of the ink cartridge and on an inkjet head side viewed from a joining joint part; (iii) the controlling unit closes the valve after the ink within the ink route flows backward to move air in a direct route into the ink cartridge; and (iv) the controlling unit drives the pump to fill the inkjet head with ink.

Abstract: An inkjet printer includes: a closing unit configured to close at least part of an ink passage connected to an inkjet head to form a closed passage; a negative pressure generator configured to generate a negative pressure in the closed passage; an ink deliverer configured to deliver ink to the inkjet head via the ink passage; and a controller. The controller: drives the closing unit to form the closed passage; drives the negative pressure generator to generate the negative pressure in the closed passage; and, upon the negative pressure in the closed passage reaching a prescribed pressure, stops the negative pressure generator while driving the closing unit to release closure of the at least part of the ink passage, and drives the ink deliverer to discharge an air bubble together with the ink in the at least part of ink passage from the inkjet head.

Abstract: An inkjet head maintenance mechanism includes: an inkjet head including a nozzle plate with ejection ports arranged in the nozzle plate and configured to eject droplets of ink, and a protection plate stacked on the nozzle plate and having an opening formed at a position corresponding to the ejection ports and exposing the ejection ports to an outside; a cap configured to come into contact with the protection plate and surround the opening of the protection plate; and a controller configured to detect an on-off state of a power supply of an inkjet printer to which the inkjet head is attached and adjust a contact pressure of the cap onto the protection plate depending on the detected on-off state of the power supply.

Abstract: A controller forms an image on a print medium by alternately repeating: a first operation of driving an inkjet head to eject ink from the inkjet head to the print medium while driving a main scanning driver to move the inkjet head in a main scanning direction; and a second operation of driving a sub-scanning driver to move a shuttle in the sub-scanning direction. The controller performs a multi-stage brake control to stop the shuttle in the second operation, and in a second stage and a stage after the second stage of the multi-stage brake control, apply brake to the shuttle at such a timing that a direction of vibration of the shuttle and a direction of force of inertia of the shuttle in braking of the shuttle are opposite to each other.

Abstract: An inkjet printer includes: a closing unit configured to close at least part of an ink passage connected to an inkjet head to form a closed passage; a negative pressure generator configured to generate a negative pressure in the closed passage; an ink deliverer configured to deliver ink to the inkjet head via the ink passage; and a controller. The controller: drives the closing unit to form the closed passage; drives the negative pressure generator to generate the negative pressure in the closed passage; and, upon the negative pressure in the closed passage reaching a prescribed pressure, stops the negative pressure generator while driving the closing unit to release closure of the at least part of the ink passage, and drives the ink deliverer to discharge an air bubble together with the ink in the at least part of ink passage from the inkjet head.

Abstract: A controlling unit causes a valve and a pump to perform the following operations: (i) the controlling unit closes the valve and drives the pump in initial filling of an inkjet head with ink; (ii) the controlling unit stops the pump and opens the valve on or after a time point when a tip of ink within an ink route reaches a prescribed position, which is higher than that of the ink cartridge and on an inkjet head side viewed from a joining joint part; (iii) the controlling unit closes the valve after the ink within the ink route flows backward to move air in a direct route into the ink cartridge; and (iv) the controlling unit drives the pump to fill the inkjet head with ink.

Abstract: A transfer roll coating color is described comprising a pigment and an adhesive as main components, wherein the average aspect ratio of the pigment is 10 or less, the adhesive is a low viscosity starch adhesive, the solids content of the color is about 58 weight % or higher, and the viscosity of the color determined at 60 rpm by using a No. 4 rotor of a Brookfield.TM. viscometer is 1,500 cps or less. Coated papers obtained by transfer roll coating using the colors at an amount of 5 g/m2 or higher per side also are disclosed.

Abstract: A process is provided for producing a coated printing paper by first applying a pigment containing layer, superposing thereon a surface layer of a thermoplastic latex having a second-order transition of at least 80.degree. C. and an average particle size of smaller than 100 nm to produce a coated printing paper having both superior printability and gloss. Another process is provided for producing a coated printing paper by first applying a pigment containing layer, superposing thereon a surface layer of a thermoplastic latex having a second-order transition of at least 80.degree. C. an average particle size of smaller than 100 nm and lubricants, and treating the surface layer with a calender at a temperature, to produce a coated printing paper having both superior printability and high gloss.

Abstract: A process is provided for producing a coated printing paper by first applying a pigment containing layer, superposing thereon a surface layer of a thermoplastic polymeric latex having a second-order transition temperature of at least 80.degree. C., and treating the surface layer with a calendar at a temperature less than the second-order transition temperature, to produce a coated printing paper having both superior printability and high gloss.