摘要:
This patent specification describes a droplet-ejecting head including a nozzle substrate having a plurality of nozzles for ejecting droplets, and an actuator configured to be driven to generate energy for ejecting droplets through each nozzle. The nozzle substrate is cleaned by a cleaning liquid containing microbubbles before being bonded to another member.
摘要:
A paper loading apparatus includes a paper retaining roller and a stop claw, both arranged for movement toward or away from a platen in opposite directions from each other. When the stop claw bears against the platen, paper is inserted into the apparatus and is properly held by the claw. Subsequently, the paper retaining roller is brought into abutment against the platen, whereupon the stop claw is moved away from the platen. The movement of the roller and the stop claw toward or away from the platen occurs automatically in response to a detection signal which indicates the insertion of the paper into the apparatus. In one embodiment, the platen is peripherally formed with a plurality of axially spaced annular grooves which extend in a direction perpendicular to the axis thereof, and receive protuberances formed on the free end of the stop claw.
摘要:
An image forming method is disclosed in which an image is formed on commercial printing paper using a high penetration pigmented ink by performing image processing which makes use of dot patterns corresponding to an output halftone level.
摘要:
This patent specification describes a droplet-ejecting head including a nozzle substrate having a plurality of nozzles for ejecting droplets, and an actuator configured to be driven to generate energy for ejecting droplets through each nozzle. The nozzle substrate is cleaned by a cleaning liquid containing microbubbles before being bonded to another member.
摘要:
An ink jet recording apparatus includes a recording head for ejecting droplets of ink and a driving circuit for driving the recording head. The recording head includes a base, a plate on which a plurality of openings are formed; an ink chamber to be filled with ink being formed between the base and the plate; and heater elements, provided in the ink chamber so as to face the openings of the plate, each of which heater elements supplies heat energy to ink adjacent thereto so that the air bubble is generated on each of the heater elements and so that the air bubble grows toward a corresponding one of the openings. An area of each of the openings of the plate is greater than an area each of the heater elements. When the driving circuit activates each of the heater elements, a droplet of ink is ejected due to the air bubble from the corresponding one of the openings of the plate.
摘要:
A sheet receptacle is provided which is capable of carrying a multiplicity of sheets to be separated and conveyed, in theform of a stack. A suction device which shaped like an inverted cup is located above the receptacle and is supported by an associated support member. A piping connects the suction device with an air suction source, which may be operated to apply an air suction. The sucker support member forms part of a mechanism which imparts a rotary motion to the suction device, which is also associated with another mechanism which causes a movement of the suction device in the vertical direction as well as in the fore-and-aft direction. An air intake opening may be formed in the air flow path which connects the suction device with the air suction source, and is provided with a sheet receiver which can be covered by a sheet to be separated and conveyed or a sheet which is equivalent thereto.
摘要:
An image processing method of processing image data includes a color space conversion step of converting an input color signal of image data into an output color signal having cyan (C), magenta (M), and yellow (Y) values; a black generation/under color removal step of converting the CMY values into cyan (C), magenta (M), yellow (Y), and black (K) values by adding a black (K) value and decreasing the CMY values so that portions of cyan (C), magenta (M), and yellow (Y) recording liquids used to form the image data are replaced with a black (K) recording liquid; and a total amount control step of controlling amounts of cyan (C), magenta (M), yellow (Y), and black (K) recording liquids calculated from the CMYK values so that a total amount of the CMYK recording liquids per unit area on a recording medium does not exceed a predetermined total amount limit.
摘要:
An ink jet printing head includes: a plurality of piezoelectric actuators arranged in rows on a substrate, each row including first piezoelectric elements and second piezoelectric elements which are alternately arrayed along the row, the first piezoelectric elements being actuatable to apply a compressive force to ink in accordance with print signals, the second piezoelectric elements being fixed and not actuated; and an ink chamber unit which includes ink chambers located above the first piezoelectric elements and containing ink. The ink chamber unit includes: an oscillation plate including diaphragm portions which are connected to the first piezoelectric elements and independently deformable in a direction perpendicular to the substrate by the first piezoelectric elements when actuated; and a nozzle plate which includes nozzles being located above the diaphragm portions and opened to the ink chambers, so that ink drops are respectively forced out from the nozzles when the first piezoelectric elements are actuated.
摘要:
An ink supply system for use in an ink-jet printer includes a main block preferably comprised of a plastic material and defining part of a carriage of the printer. A valve assembly having an ink chamber is incorporated in the main body which controls the flow of ink from an ink reservoir formed in the main block to an ink-jet nozzle head mounted on the carriage. A plurality of ink passages are formed inside of the main body establishing fluidic communications between the ink reservoir, ink chamber and the nozzle head, thereby requiring to provide no tubing.
摘要:
In an ink-jet printing head of the type in which the front end of an ink distribution tube is formed with a nozzle hole and the rear end thereof is terminated into a spigot and inserted into one end of the ink supply tube and rigidly connected thereto, a resonance adjusting means has an ink passage of a fine diameter extended therethrough in the axial direction thereof and is inserted into the spigot end portion of the ink distribution tube in such a way that the front end of the resonance adjusting means is spaced apart from the front end with the nozzle hole of the ink distribution tube by a distance equal to a resonance distance, at which the ink in the ink distribution tube is resonated, and thereafter rigidly and liquid-tightly connected to the spigot end portion.