Abstract: An inkjet printing apparatus includes a purge unit having a sheet member that purges ink deposited on an orifice face of a print head and a winding unit that winds the sheet member. By using the number of ink ejections executed between a first purge operation and a second purge operation, the amount of winding of the sheet member is controlled after the second purge operation is completed.

Abstract: The present invention provided a printing apparatus including: an ink storage section; a detection unit detecting an ink remaining amount of the section; a printhead; an air communication section communicating with the section and air; a suction unit; and a control unit. When a predetermined transport-preparation condition regarding transport of the printing apparatus is satisfied, the control unit saves information about the ink remaining amount detected by the detection unit and controls the suction unit to drain ink in the air communication section through the printhead. When a predetermined start-up condition is satisfied, the control unit controls, based on the information, the suction unit to suck ink from the printhead.

Abstract: A method of etching a silicon substrate, in which a depressed portion is formed by etching a first surface of the silicon substrate with ions generated in plasma, the method including introducing a rare gas into a reaction system to ionize the rare gas.

Abstract: While a wiping operation for keeping a satisfactory ejection opening surface of an inkjet recording head is performed, a usage amount of a sheet-like member is to be reduced. A contamination state of a wiping area after the wiping operation is determined, and a timing of reeling the sheet-like member in a wiping unit is controlled in accordance with a determination result of the contamination state.

Abstract: A process for producing a substrate for a liquid ejection head, including a step of forming a liquid supply port passing through a silicon substrate by dry etching, the step being a step of sequentially repeating the steps of (1) forming an etching protection film on the silicon substrate, (2) removing a bottom portion of the etching protection film, and (3) etching the silicon substrate, wherein a sheath formed in the step (2) is thicker than a sheath formed in the step (3).

Abstract: While a wiping operation for keeping a satisfactory ejection opening surface of an inkjet recording head is performed, a usage amount of a sheet-like member is to be reduced. An inkjet recording apparatus includes a recording head, a sheet-like member, a reeling roller that reels the sheet-like member 31, and a measurement unit that measures an ejection number of ink ejected from the recording head. A control is performs to cause the reeling roller 32 to reel the sheet-like member 31 in accordance with the ejection number of the ink which is measured by the measurement unit.

Abstract: When performing at least one of preliminary ejection or a suction unit as a countermeasure against adhering ink that accumulates in the portion where preliminary ejection is performed, the preliminary ejection amount and suction speed of the suction unit are optimized. An inkjet print apparatus that prints by using a printing head for ejecting ink, comprising: an ejecting unit; a sucking unit; a measuring unit that measures an elapsed time after the sucking unit is performed; and a control unit that control ejection by the ejecting unit or sucking by the sucking unit according to the elapsed time measured in the measuring unit; wherein as the elapsed time becomes longer, the amount of ink that is ejected to the ink receiving unit in the ejecting unit is increased or a suction speed at which the ink is sucked in the sucking unit is increased.

Abstract: The portable terminal includes a display unit configured to display a screen; a first buffer and a second buffer configured to sequentially store display data for the displayed screen; a first determination unit configured to determine whether to perform single-buffer control or double-buffer control based on update data for the displayed screen; and a setting unit configured to set, if single-buffer control is appropriate, a display control method of the display unit to a display control method using the first buffer and to set, if double-buffer control is appropriate, a display control method of the display unit to a display control method using the first buffer and the second buffer.

Abstract: An ink jet recording apparatus includes a recording head, a carriage, a wiping unit, and a control unit. The recording head includes a discharging port surface provided with a first discharging port row group having at least one discharge port row formed by arraying a plurality of discharging ports in a predetermined direction and a second discharging port row group having at least one discharge port row formed by arraying a plurality of discharging ports in a predetermined direction. The carriage causes the recording head to scan reciprocally in a direction intersecting the predetermined direction. The wiping unit includes a sheet member for wiping the discharge port surface and a winding device to wind the sheet member. The control unit controls the winding device so that the first discharge port row group and the second discharge port row group are wiped with different areas of the sheet member.

Abstract: A method of processing a substrate includes forming holes in bottom portions of a plurality of recesses formed in a substrate to be arranged in an array direction at a predetermined pitch by performing reactive ion etching on the bottom portions of the plurality of recesses. The forming holes in the bottom portions of the plurality of recesses is a process of preparing a substrate in which a dummy recess serving as a dummy is formed on at least one side of the array direction, in which the plurality of recesses that include the bottom portions in which the holes are formed are arranged, such that a recess is formed on both sides of a recess so that the plurality of recesses are formed at the predetermined pitch in the array direction and performing reactive ion etching on the bottom portions of the plurality of recesses of the prepared substrate.

Abstract: In the case where a preliminary discharge operation is always performed at a position that is spaced apart from a recording area, the time taken for a recording head to be moved to a preliminary discharge position is increased, and this results in a decrease in throughput. In the case where it is determined that a leading end or a trailing end of a recording medium is located on a platen, positions at which the distance from an end of a recording medium to a recording head with respect to a moving direction is not smaller than a threshold are determined as preliminary discharge positions, and the recording head is controlled to perform a preliminary discharge operation.

Abstract: An embodiment of the present invention provides a wiping method capable of preventing a problem such as color mixing or a discharge failure in a wiping operation during the reciprocating motion of a carriage. According to the embodiment, one or a plurality of orifice arrays out of a plurality of orifice arrays included in a printhead are wiped by making a sheet-like wiping member contact to the orifice surface of the printhead. After that, the wiping member is separated from the orifice surface of the printhead, and the used wiping member is wound. Then, the wiping member is made to contact to the orifice surface of the printhead again, and the next one or more orifice arrays are wiped.

Abstract: A disclosed portable apparatus includes: a first touch switch that is installed on a first surface of a housing of the portable apparatus; a second touch switch that is installed on a second surface of the housing, which is opposite to the first surface; and a determination unit configured to determine whether or not the first surface and the second surface are simultaneously touched, based on outputs of the first touch switch and the second touch switch. The portable apparatus may further include a first controller configured to release a lock function upon determining that the first surface and the second surface are simultaneously touched, and to activate the lock function upon determining that the first surface and the second surface are not simultaneously touched.

Abstract: An inkjet recording apparatus includes a recording head, a carriage, a wiping unit, and a controller. The recording head has a discharge port face with a plurality of discharge ports to discharge ink. The carriage has the recording head mounted thereon and performs reciprocal scanning. The wiping unit includes a sheet-shaped wiping member to wipe the discharge port face and a conveying unit to convey the wiping member. The controller controls an amount of conveyance of the wiping member by the conveying unit. The controller performs control so that the conveyance amount in a first case, where a time elapsed since a last conveyance operation of the wiping member is greater than or equal to a certain time, becomes greater than the conveyance amount in a second case, where the time elapsed since the last conveyance operation of the wiping member is less than the certain time.

Abstract: A printing apparatus includes a print head, a scanning unit, a sheet-form member, a winding device, and a determining unit. The print head includes an orifice face having an ejection orifice to eject a liquid. The scanning unit performs scanning while reciprocating the print head. The sheet-form member performs a wiping operation of the orifice face of the print head, wherein the wiping operation includes a first wiping operation and a second wiping operation. The winding device performs a winding operation of the sheet-form member. The determining unit determines a length of the sheet-form member that is to be wound by the winding device in accordance with a length of time between the first wiping operation performed by the sheet-form member and the second wiping operation performed by the sheet-form member that follows the first wiping operation.

Abstract: A method of manufacturing a liquid discharge head substrate, includes forming an etching mask layer having an opening in a shape corresponding to a plurality of second portions on a second plane of the substrate, forming a recess to be a first portion by etching the substrate through the opening of the etching mask layer from a second plane side of the substrate, and forming the plurality of second portions by etching a portion from a bottom of a first portion to a first plane using the etching mask layer as a mask from the second plane side of the substrate to form a liquid supply port passing through the substrate.

Abstract: This invention prevents a possible color mixing, that may occur more than a predetermined time after the wiping operation, by executing a pre-printing cleaning ejection while at the same time minimizing the amount of waste ink produced by the cleaning ejection. To this end, if a color mixing is determined as being likely to occur an elapsed time after the previous wiping operation, the pre-printing cleaning ejection uses a second ink volume U, which represents both the color mixing elimination ink volume and the ejection failure elimination ink volume. If it is decided that there is no likelihood of the color mixing occurring the elapsed time after the wiping operation, the pre-printing cleaning ejection uses the first ink volume D which represents only the ejection failure elimination ink volume.

Abstract: In an inkjet apparatus using an inkjet head ejecting multiple types of inks different in viscosity after evaporation of solvent, a replacement timing for a component is judged by using a consumption amount of each type of ink and a generation rate in amount of ink droplets. Accordingly, in the case of using a large amount of ink strongly susceptible to fixed adhesion and increase in viscosity, the component is replaced at an earlier timing, which prevents fixed adhesion from influencing the print performance and the printing apparatus main body. By contrast, in the case of using a large amount of ink less susceptible to fixed adhesion and increase in viscosity, the component is replaced at a later timing and thus can be used until reaching its lifetime.

Abstract: A recording apparatus includes: a recording unit for applying ink on a sheet by a printing head; a drying unit for drying the sheet; a measuring unit for measuring patterns on the sheet; a conveying unit for conveying the sheet; a recovering unit for performing a printing head-recovering operation; and a control unit for controlling the apparatus such that, the recording apparatus performs recording to form patterns, the conveying unit performs first conveying to convey the sheet from a recording region to a drying region, the drying unit performs drying, the conveying unit performs second conveying to convey the sheet from the drying region to a measuring region, and the measuring unit performs measuring, in sequence, wherein the recovering operation is performed at timing at least partially overlapping at least one of the first and second conveying operations, the drying operation, and the color measuring operation, after the recording operation.

Abstract: An inkjet recording apparatus includes a recording head including a discharge port, a carriage configured to perform reciprocating scanning with the recording head mounted thereon, a main tank configured to store ink, a sub-tank configured to be supplied with ink from the main tank via a tube, a supply tube configured to connect the recording head and the sub-tank, and a control unit configured to control the carriage, wherein the control unit controls acceleration of the carriage such that a dynamic pressure of ink inside the supply tube becomes greater than a pressure resistance to an ink movement and a pressure resistance to an air movement in the tube.