Fujitsu Corporation

Tokyo Shibaura Denki Kabushiki Kaisha

Tokyo Shibaura Electric Co., Ltd.

Kabushiki Kaisha Toshiba

Masayuki Sasaki

Mutsuo Watanabe

Hiromitsu Soneda

Yoshio Oida

Kouichi Sanpei

Hidetoshi Semi

Takumi Kawamura

Akira Iwaishi

Tomoyuki Akahoshi

Masahiro Ono

Akihiko Miyaki

Shuji Koike

Shinichi Suzuki

Koichi Sanpei

Sadaaki Yoshida

Motokazu Tamano

Shinichi Hasebe

Toshinori Moriyasu

Shuichi Gotou

Takao Arakawa

Keisuke Fujikura

Mitsuhiro Soneda

A nozzle plate to be mounted on an ink jet print head includes a plate body on which is formed a plurality of jet aperture portions from which ink is jetted and a water-repellant film formed on this plate body. The diameter of jet aperture portions formed on the plate body and the diameter of water-repellant film apertures formed on the water-repellant film so as to connect with the nozzle apertures are the same diameter R , so the ink jet flow can be accurately controlled.

Nozzle plate manufacturing method

The present invention aims at providing a blade for use with a development device, method of manufacturing the same, die for manufacturing the same, and development device and image-forming device having the same that can more stably form a high quality image. The inventive blade is manufactured using a stamping die comprising an upper mold portion including a knockout, a lower mold portion including a punch and movable relative to the upper mold portion. In the stamping die, the knockout includes in cross section a first flat portion and a triangular projection portion that projects from the first flat portion, while the punch includes in cross section a second flat portion and a triangular groove portion formed on the second flat portion, and a first angle at which the triangular projection portion projects from the first flat portion is larger than a second angle at which the triangular groove portion is recessed from the second flat portion.

Stamping die for cutting and forming sheet material

An ink-jet head includes a head portion having a plurality of head segments and an ink feeding portion, where ink is supplied such that pipes each have one end connected to the head portion and the other end connected to one of ink feeding paths of the ink feeding portion. The pipes are held by elastic ring-shaped members that are further sidewise held by rigid ring-shaped members and vertically sandwiched between the ink feeding paths and an upper end portion of the head portion.

Ink-jet head and printer using the same

The present invention has an object to provide an inkjet head and a method for manufacturing the inkjet head which not only protects a member at and/or near a surface onto which the nozzle plate is connected (nozzle connection surface), but also shortens the manufacturing time. A protective layer is provided between the nozzle plate and the piezo-electric element, enabling only the protective layer to be polished, protecting the piezo-electric element from being damaged by the polishing when the nozzle connection surface is formed. After the inkjet head is completed, the protective layer prevents ink leakage to the piezo-electric element.

Inkjet head which arranges protective layer at surface to which nozzle plate is connected and method for manufacturing the inkjet head

The instant invention has an exemplified object to provide an inkjet head and recording device having such an inkjet head with a simpler structure as achieves higher quality of printing inexpensively than the conventional. The pressure-chamber plate of this invention is slit or divided into a plurality of elements.

Inkjet head formed of divided pressure-chamber plate, method for manufacturing the same, and recording device having the inkjet head

A water-repellent coating having a higher wiping resistance against a wiper and capable of being formed by a more simplified process than was previously possible. The method of forming the water-repellent coating comprises a flat hard body and a plating-processed fluoric polymer which are formed on a nozzle plate having a nozzle as a substrate around the nozzle.

Water-repellent coating and method for forming same on the surface of liquid jet

An ink jet head including a piezoelectric element having a displacing portion, a pressure chamber plate bonded to the piezoelectric element for defining a common ink chamber and a plurality of pressure chambers in cooperation with the piezoelectric element, and a nozzle plate bonded to the piezoelectric element and the pressure chamber plate and having a plurality of nozzles respectively communicating with the plurality of pressure chambers. Each pressure chamber is connected to the common ink chamber through a plurality of ink supply channels each having a substantially square cross-section.

Ink jet head and ink jet recording device

It is an exemplified object of the present invention to provide an inkjet head, its manufacturing method, and a recording device that can form a high-quality image while preventing an ink leakage. To accomplish the object, an indent is provided at a joint surface of a pressure chamber plate with an adhesive.

Inkjet head, its manufacturing method and recording device

In at least one of a plurality of shutter vanes forming a shutter there are provided a plurality of openings adapted to detect the movement of the shutter vanes. A photointerrupter is turned on and off by the openings when the shutter vanes move. An output voltage of the photointerrupter is compared with a reference voltage by a comparator. A series combination of a switch, which is turned on and off by the output voltage of the comparator, and a resistor is connected between the output of the photointerrupter and ground. The output signal of the comparator is delayed. The delayed version and the output signal of the comparator are exclusive ORed to produce a train of pulses corresponding to the openings as the shutter vanes move. A drive and control section is responsive to the count of the pulses to control the operation of the shutter.

Pulse generating circuit for detecting aperture size of camera shutter

A picture blur-alarm device for a camera includes a photo-electric converter for time-sequentially sending brightness data including analog signal components which correspond to the brightness of the plurality of regions of an optical image of a foreground object, a comparator for comparing two successive brightness data time-sequentially issued from the photo-electric converter, and producing an output signal corresponding to the number of those of the analog signal components of a preceding brightness data which have different levels from corresponding analog signal components of a succeeding brightness data; and an alarm circuit which issues an alarm signal when an output signal from the comparator has a higher level than prescribed.

Picture blur-alarm device for a camera

A zero-crossing signal is generated in response to the zero-crossing of the current of an AC power source of a magnetron oscillator, and in response to the zero-crossing signal a triac connected between the magnetron oscillator and the AC power source is turned on to generate a microwave. The triac is turned off when the voltage of the AC power source becomes lower than a holding voltage of the triac.

Power control circuit for a magnetron oscillator

A system for entering a temperature setting into a memory store and for displaying it, wherein the temperature setting includes a temperature level portion and a temperature scale portion. The temperature level portion corresponds to the temperature at which a microwave oven, for example, is to be set and the temperature scale portion indicates whether the temperature level portion is calibrated in degrees Fahrenheit or degrees Celsius. The temperature level is inputted through a decimal keyboard and a key signal encoder. Gating circuits transfer the temperature level from the key signal encoder and the temperature scale from a temperature unit code generator to a memory under control of a preprogrammed instruction data generator. A display circuit and display unit are coupled to the memory for displaying the temperature setting. A temperature level is supplied to a temperature setting register through another gating circuit to provide the temperature level to a temperature control circuit external to the temperature entering and displaying system.

System for entering temperature control data and displaying it with the

A control device adapted to control cooking time and power of an electric cooking device. By depressing entry keys on a control panel a desired cooking time data and power level setting data are entered in first and second shift registers respectively. Next when a cooking start key is depressed the electric cooking device starts its operation at a power corresponding to the power level setting data and the down count operation of the time data in the first shift register is started. When the time data in the first shift register becomes zero due to the down count operation the cooking device stops its operation. The data in the first and second shift registers are displayed by digital indicators. The time data in the first shift register is detected whether or not it has an erroneous digit or digits and any detected erroneous digit or digits are blanked or flashed on the digital indicators.

Digital control for a cooking time and power of an electric cooking

An output power control system includes an output power control circuit for producing first and second control signals to control a switch and a semiconductor control element which are inserted between a power source and an oscillating magnetron tube. The output power control circuit includes a main control section and an output control section. The main control section receives a door signal representing the open or closed state of an oven door and an initiating pulse for initiating the operation of the output power control circuit. The same section periodically detects the door signal to produce first and second set signals when the door is closed at the detection, and to produce first and second reset signals when the door is open. The output control section includes a first means and a second means. The first means produces the first and second signals to cause the magnetron tube to oscillate when receiving the first and second set signals while it stops the production of the first and second signals thereby to stop the oscillation of the magnetron tube when receiving the first and second reset signals. The second means immediately stops the oscillation of the magnetron tube by stopping the production of the first and second control signals as the door is opened during the oscillation period of the magnetron tube.

Output power control system for microwave ovens

Disclosed is a power level setting/display circuit for a microwave oven which comprises a logical gate circuit for feeding a maximum power level signal to a setting register by means of a function key for power level setting, a logical gate circuit for supplying the fed maximum power level signal to a display register, a logical gate circuit for storing a power level command signal in a temporary storage register, a logical gate circuit for clearing the contents of the display register simultaneously with such storage of the power level command signal, a logical gate circuit forming a series closed loop by means of the display register and temporary storage register, whereby the power level command signal stored in the temporary storage register will be shifted to the bottom digit of the display register, and a logical gate circuit for supplying the power level command signal stored in the display register to the setting register.

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Kawasaki, Japan

Masayuki Sasaki