Abstract: The printing method includes the following steps of: preparing a printing apparatus that includes an element that is driven in order to form a dot, a first drive signal generation section that generates drive signals for driving the element, and a second drive signal generation section that generates drive signals for driving the element; at a certain timing, forming a dot of a predetermined size by generating a first drive signal with the first drive signal generation section and by generating a second drive signal that is different from the first drive signal with the second drive signal generation section; and at a separate timing, forming a dot of the predetermined size by generating the first drive signal with the second drive signal generation section. With this printing method, the first drive signal generation section and the second drive signal generation section can be made to generate an equal amount of heat.

Abstract: A printing method that can suppress drops in voltage due to discharging of piezo elements is achieved.

Abstract: A printing apparatus that can prevent unexpected operation of an element is to be achieved. The printing apparatus is provided with: a drive signal generating circuit that can generate a plurality of drive signals, an element to which the plurality of drive signals can be applied and that performs operation for ejecting ink according to the applied drive signals, and a prevention circuit for preventing the plurality of drive signals from being simultaneously applied to the element.

Abstract: A liquid ejecting apparatus that drives an element to eject a liquid onto a medium, is provided with: a drive signal generator that is configured to generate a plurality of types of ejection drive signals for driving the element to eject the liquid; a sensor for detecting a temperature of the drive signal generator; and a controller that temporarily halts generation of the ejection drive signal from the drive signal generator based on the type of the ejection drive signal and a result of detection by the sensor.

Abstract: It is an object of the present invention to achieve a printing apparatus having a head driver for driving a head that ejects ink, a scanner for reading an image formed on a medium, and a controller for controlling the head driver to form a correction pattern on the medium, causing the scanner to read the correction pattern that has been formed on the medium, and correcting driving of the head by the head driver based on the results of reading the correction pattern.

Abstract: Disclosed is an ink-jet recording apparatus, which is for making an ejection amount of ink droplets constant even when a temperature change occurs in a place where ink-jet recording apparatus is used, performing recording with stable image quality, and grasping accurately an ink reservation amount. The temperature change amount of a recording head is obtained based on head temperature information stored in a backup memory (S17), an ink reservation amount in an ink cartridge is obtained (S16), and the ink consumption amount of a head is controlled based on the temperature change amount and the ink reservation amount (S17).

Abstract: A print head mechanism performs printing predetermined image information on a fed recording medium, based on a given control signal. A detector detects an operating rate of the print head mechanism at a predetermined region on the recording medium every time when printing with respect to the predetermined region is finished. A comparator compares the operating rate with a given threshold operating rate. A controller halts the print head mechanism, when the operating rate exceeds the threshold operating rate, for a halting time period corresponding to an excess amount of the operating rate.

Abstract: A print head mechanism performs printing predetermined image information on a fed recording medium, based on a given control signal. A detector detects an operating rate of the print head mechanism at a predetermined region on the recording medium every time when printing with respect to the predetermined region is finished. A comparator compares the operating rate with a given threshold operating rate. A controller halts the print head mechanism, when the operating rate exceeds the threshold operating rate, for a halting time period corresponding to an excess amount of the operating rate.

Abstract: An ink jet printing device supplies first and second signals to cause a pressure generating chamber to jet out ink droplets. A third signal is applied to the pressure generating chamber to effectively attenuate the kinetic energy of the meniscus and to hold the meniscus at a position suitable for jetting out the next ink droplet to provide a stable print output. Also, an ink-jet recording apparatus is provided with a control means for controlling the timing of the start of the second signal and the timing of the start of the third signal according to the environmental temperature. In the ink-jet recording apparatus, the discharge speed of ink drops is made constant by regulating the start time of the second signal so as to make constant the drawing position of a meniscus when the ink drops are discharged.

Abstract: An ink jet print head having a vibrating plate, a chamber element with plural ink pressure chambers, piezoelectric vibrating elements for vibrating the vibrating plate to expand and contract the ink pressure chambers, drive electrodes contacting one surface of each vibrating element, and a common electrode contacting another surface of each vibrating element, wherein the common electrode is connected to a lead electrode at a region remote from the vibrating elements and the drive electrodes. Also, an ink jet print head in which a central portion of a piezoelectric vibrating element is thicker than its peripheral portion, so that a vibrating plate is bent towards an interior of an ink pressure chamber in an inoperative condition of the piezoelectric vibrating element.

Abstract: While a pressure producing chamber is largely expanded before jetting ink droplets so as to increase an amount capable of capturing meniscus, distances of d1, d2, and d3 defined from the meniscus produced when the ink droplets are jetted up to a tip portion of a nozzle opening are arbitrarily varied in order to adjust the weights of the ink droplets. As a result, the ink amount of the ink droplets can be reduced which are jetted from an ink jet type recording head in which a piezoelectric vibrating element is employed as a pressure producing source.

Abstract: An ink jet printing device supplies first and second signals to cause a pressure generating chamber to jet out ink droplets. A third signal is applied to the pressure generating chamber to effectively attenuate the kinetic energy of the meniscus and to hold the meniscus at a position suitable for jetting out the next ink droplet to provide a stable print output. Also, an ink-jet recording apparatus is provided with a control means for controlling the timing of the start of the second signal and the timing of the start of the third signal according to the environmental temperature. In the ink-jet recording apparatus, the discharge speed of ink drops is made constant by regulating the start time of the second signal so as to make constant the drawing position of a meniscus when the ink drops are discharged.

Abstract: To prevent fluctuations in the quantity of ink of an ink droplet that are brought about by drive frequency due to the natural vibration of common ink chambers, a relationship between the maximum drive frequency F of a laminated ink jet recording head and the natural vibration cycle T of common ink chambers that supply ink to a pressure producing chamber is set so that F/n<15/16.times.T, or 17/16.times.T<F/n, where n=1, 2, 3, . . . , 8. Ink droplets jetted out thus avoid a period in which the ink in the common ink chambers is flowing toward an ink introducing port with a high rate of flow.

Abstract: An ink jet recording head including a vibrating plate made of ceramic, a pressure producing chamber forming member, made of ceramic, for forming a plurality of pressure producing chambers in rows, and drive electrodes formed on a surface of the vibrating plate so as to confront the pressure producing chambers. A width W2 of each drive electrode is smaller than a width W1 of each pressure producing chamber. A width W3 of a piezoelectric vibrating element is larger than the width W2 of each drive electrode and smaller than the width W1 of each pressure producing chamber, so that an operation region of the piezoelectric vibrating element is regulated by the width W2 of the drive electrode, and peripheral portions of the piezoelectric vibrating element are reliably bonded to peripheral portions of the drive electrode.

Abstract: An ink jet recording head including: a vibrating plate made of ceramic; a pressure producing chamber forming member, made of ceramic, for forming a plurality of pressure producing chambers in rows; and drive electrodes formed on a surface of the vibrating plate so as to confront the pressure producing chambers. A width of the drive electrode is smaller than a width of the pressure producing chamber. A width of a piezoelectric vibrating element is larger than the width W2 of the drive electrode and smaller than the width of the pressure producing chamber, so that the operation region of the piezoelectric vibrating element is regulated by the width of the drive electrode and the peripheral portions of the piezoelectric vibrating element are bonded to the peripheral portions of the drive electrode reliably.

Abstract: An ink jet recording apparatus provided with: an ink jet recording head having a pressurizing chamber communicated with a nozzle opening and a common ink chamber, and a piezoelectric vibrating plate which is formed at a surface of the pressurizing chamber and deflection-displaced, the head being caused to eject an ink drop by the deflection displacement of the piezoelectric vibrating plate; a charging circuit which supplies a current to the piezoelectric vibrating plate in response to a print signal, thereby producing the deflection displacement for ink ejection, and which outputs a signal for holding a charge final voltage during a fixed time period after an end of charge; and a discharging circuit which has a first discharge time constant suitable for sucking meniscus formed immediately after ink ejection toward the pressurizing chamber, thereby preventing the meniscus from being ejected from the nozzle opening, which stops discharge in a range which is (n+3/4) to (n+1) times (where n is 1, 2, 3, . . .

Abstract: An ink supply communication path is formed so that one end thereof is arranged outside a region confronting a pressure producing chamber at a region confronting a reservoir chamber; and an ink supply constricted port is arranged at a portion of the ink supply communication path, the portion being remotest from the pressure producing chamber. Since the pressure producing chamber is connected to the ink supply constricted port through the elongated ink supply communication path, a jet flow from the ink supply constricted port grows into a large flow along the ink supply communication path, which in turn allows air bubbles susceptible to stagnation in the vicinity of the ink supply constricted port to be discharged by such large flow.