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Iwai, Yokohama-Shi

Naoko Iwai, Yokohama-Shi JP

Patent application numberDescriptionPublished
20090108769LIGHTING DEVICE AND ILLUMINATION APPARATUS - The present invention provides a lighting device capable of controlling finely modulated light control without stopping other processing regardless of an operation clock. The light modulation signal generating portion calculates a cycle of a PWM signal based on the lighting state of lamp, which is detected by state detecting portion and a predetermined operation clock. A PWM signal of the cycle calculated by the state detecting portion is generated by the light modulation signal generating portion capable of generating the PWM signal corresponding to the cycle of a non-integral number of times of the operation clock, wherein the cycle of the PWM signal can be continuously and finely varied without stopping other processing regardless of operation clocks, and fine modulated light control is enabled.04-30-2009
20090134813DISCHARGE LAMP LIGHTING DEVICE - The inverter circuit is feedback-controlled by a substantial current flowing into the discharge lamp, which is detected by the current detecting means. A high starting voltage is supplied to the discharge lamp with the operation frequency lowered by the control circuit after the end of a preheating action. The inverter circuit is controlled so that the current of the discharge lamp becomes a desired current value as soon as the current detecting means detects the current substantially flowing into the discharge lamp. The discharge lamp can be prevented from being instantaneously brightly lit without separately providing any structure for detecting lighting of the discharge lamp.05-28-2009
20100097007LIGHT-EMITTING DIODE LIGHTING DEVICE - There is provided an LED lighting device having a satisfactory temperature characteristic and a small amount of variation in output current. The step-down chopper is provided with a first circuit including the switching element, the impedance means and a first inductor connected in series and a second circuit including the first inductor and a diode connected in series. A self-excited drive signal generation circuit is provided with a second inductor magnetically coupled with the first inductor and applies a voltage induced in the second inductor to the switching element to keep the switching element on. A turn-off circuit outputs an output voltage when the voltage of the impedance means detected by a comparator exceeds the reference value, and the output voltage allows a switching element to turn on to short-circuit the output terminals of the self-excited drive signal generation circuit, resulting in that the switching element is turned off.04-22-2010

Patent applications by Naoko Iwai, Yokohama-Shi JP

Sadayuki Iwai, Yokohama-Shi JP

Patent application numberDescriptionPublished
20090116872Charging device, and process cartridge and image forming apparatus using the same - A charging device including an electron discharging device for forming a latent electrostatic image on an image bearing member and containing an sp05-07-2009

Shigeru Iwai, Yokohama-Shi JP

Patent application numberDescriptionPublished
20080318824Hairdressing Preparation Cleansers and Usage Method Thereof - It is an object of the invention to provide a hair cleanser that has a high cleansing effect on hairdressing preparation and can provide smoothness to the hair.12-25-2008

Shogo Iwai, Yokohama-Shi JP

Patent application numberDescriptionPublished
20110280717STEAM DEVICE - In one embodiment, a steam device includes a high-temperature member and a low-temperature member. One surface of the high-temperature member is exposed to high-temperature steam, and the other surface is cooled by cooling steam having a temperature lower than the high-temperature steam. The low-temperature member is disposed to face the high-temperature member with a passage for the cooling steam therebetween and is formed of a material having a heat resistance lower than that of the high-temperature member. The steam device has at least one high-reflectance film selected from a first high-reflectance film, which is formed on the surface of the high-temperature member which is exposed to the high-temperature steam and has a higher reflectance with respect to infrared rays than the high-temperature member, and a second high-reflectance film, which is formed on the surface of the low-temperature member facing the high-temperature member and has a higher reflectance with respect to infrared rays than the low-temperature member.11-17-2011

Takashi Iwai, Yokohama-Shi JP

Patent application numberDescriptionPublished
20100296898Resin-Coated Metal Plate And Drawn Cans Using These Plates - The present invention offers resin-coated metal plates and methods of making, in which the resin-coated metal plates prevent wicket scars from occurring during processes of varnish, print and dry, and there are few scars on the resin-coated surface, the inner surface side of the can and that have superior corrosion resistance and workability, and drawn cans using these metal plates. Therefore, resin film that is applied to the metal plates, is comprised of two layers of a crystallized saturated polyester resin layer [A] and a layer composed of resin [B] that is comprised of saturated polyester resin (i) and ionomer resin (ii), wherein the layer composed of resin [B] is laminated on the above-mentioned metal plate to tightly contact with it, and on the polar surface of the saturated polyester resin layer that is crystallized [A] a highly crystallized layer (X) is formed. A drawn can is formed using the resin-coated metal plate.11-25-2010

Yasunori Iwai, Yokohama-Shi JP

Patent application numberDescriptionPublished
20090101859STEAM VALVE AND GENERATOR SET - A steam valve 04-23-2009
20100232958NOZZLE BOX OF AXIAL FLOW TURBINE AND AXIAL FLOW TURBINE - A nozzle box 09-16-2010