Abstract: A rotating body to be inserted with a shaft includes a holding portion on an end portion of the rotating body to hold the rotating body on the shaft. The holding portion includes a hook to be elastically deformable and detachably hook on a recess of an end portion of the shaft. The holding portion is rotatingly movable, with elastic deformation of the hook, over a convex portion of the shaft that is outside the recess in an axial direction of the shaft.

Abstract: A rotating body to be inserted with a shaft includes a holding portion on an end portion of the rotating body to hold the rotating body on the shaft. The holding portion includes a hook to be elastically deformable and detachably hook on a recess of an end portion of the shaft. The holding portion is rotatingly movable, with elastic deformation of the hook, over a convex portion of the shaft that is outside the recess in an axial direction of the shaft.

Abstract: An image forming apparatus includes an ink discharge unit including nozzles to discharge ink and to form an image on a recording medium; a conveyer belt to convey the recording medium so that the recording medium passes through an area facing the ink discharge unit, the conveyor belt including blank discharge holes to let the ink for a blank discharge through; a control unit to control an ink discharge operation of the ink discharge unit; a blank discharge receiver to receive the ink for the blank discharge, provided at a position facing the ink discharge unit across the conveyor belt; and a belt position detection unit to detect a position in a direction perpendicular to a belt moving direction of the conveyor belt, wherein the control unit controls the blank discharge operation of the ink discharge unit based on a detection result detected by the belt position detection unit.

Abstract: An image forming apparatus includes a recording head including heads containing arranged nozzles to discharge a droplet, the heads are arranged in a zigzag form along a nozzle array direction; a conveyer belt with suction holes to convey a printing medium in a direction intersecting a head array direction; and a control unit to control an blank discharging; wherein suction hole arrays including the suction holes arranged in the head array direction, are arranged at a predetermined interval; wherein one of the suction hole arrays is a reference suction hole array including the suction hole to pass a position facing the nozzle of a nozzle array end and the nozzle in an overlapping part of two heads in the nozzle array direction; and wherein the control unit makes each nozzle discharge a blank discharging droplet to the suction holes, using the reference suction hole array as a standard.

Abstract: An image forming apparatus includes an ink discharge unit including nozzles to discharge ink and to form an image on a recording medium; a conveyer belt to convey the recording medium so that the recording medium passes through an area facing the ink discharge unit, the conveyor belt including blank discharge holes to let the ink for a blank discharge through; a control unit to control an ink discharge operation of the ink discharge unit; a blank discharge receiver to receive the ink for the blank discharge, provided at a position facing the ink discharge unit across the conveyor belt; and a belt position detection unit to detect a position in a direction perpendicular to a belt moving direction of the conveyor belt, wherein the control unit controls the blank discharge operation of the ink discharge unit based on a detection result detected by the belt position detection unit.

Abstract: An image forming apparatus includes a recording head including heads containing arranged nozzles to discharge a droplet, the heads are arranged in a zigzag form along a nozzle array direction; a conveyer belt with suction holes to convey a printing medium in a direction intersecting a head array direction; and a control unit to control an blank discharging; wherein suction hole arrays including the suction holes arranged in the head array direction, are arranged at a predetermined interval; wherein one of the suction hole arrays is a reference suction hole array including the suction hole to pass a position facing the nozzle of a nozzle array end and the nozzle in an overlapping part of two heads in the nozzle array direction; and wherein the control unit makes each nozzle discharge a blank discharging droplet to the suction holes, using the reference suction hole array as a standard.

Abstract: An information management system, livestock management system and cages with which chickens can be managed as individual units. A tag reader 8 communicates with a transponder 5 attached to chicken 2 in cage 1 through a passive antenna disposed on one surface of cage 1 so that the distance from transponder 5 is within a first predetermined distance and an active antenna 7 disposed on automatic feeder 4 so that the distance from passive antenna 6 when closest is within a second predetermined distance whereby power can be supplied using electromagnetic coupling, and reads management information for chicken 2 from transponder 5 or writes it to transponder 5. This information management system can be used for other livestock and for other moving objects.

Abstract: The present invention relates to an antenna circuit that can achieve optimal matching according to an external environment of an antenna without interrupting communication in wireless transmission and reception. The antenna circuit of a cellular phone is provided with a plurality of matching circuits between a transmitting unit or a receiving unit and the antenna. A control unit detects operating conditions of the cellular phone such as a waiting mode, a normal voice call mode or a hands-free call mode as the external environment of the antenna. Each matching circuit has an impedance to optimize the antenna matching according to the respective conditions.

Abstract: A multicolor stencil printer including print drums each storing an ink of a particular color, pressing members each positioned and configured to move into contact with a particular one of the print drums to nip a recording medium for printing and move out of the contact to transport the recording medium toward downstream, and holding devices each assigned to a particular one of the pressing members for holding the particular one of the pressing members out of the contact with the particular one of the print drums, wherein in a color selective mode, the print drums and the pressing members selectively cooperate to nip the recording medium such that the holding devices assigned to unused pressing members hold the unused pressing members away from the print drums associated cooperatively with the unused pressing members.

Abstract: A stencil printer of the present invention includes at least one ink drum for wrapping a master around its outer periphery. An ink feed device feeds ink to the master wrapped around the ink drum. A pressing member is movable into and out of contact with the ink drum at a position where it faces the ink feed device. An image is printed on a paper fed from a paper feed section at a print section where the ink drum and pressing member face each other. A belt conveyor includes a belt extending between the paper feed section located upstream of the print section in the direction of paper conveyance and a paper discharge section located downstream of the print section in the same direction through the print section. The belt conveys the paper fed from the paper feed section while causing it to electrostatically adhere thereto. The paper is sufficiently electrostatically adhered to the belt before it reaches the print section, so that air suction, an air knife, a separator or the like is not necessary.

Abstract: Electroless nickel plating and gold plating is performed on an aluminum electrode in order to construct a highly reliable electrode. The steps are: depositing zinc on the aluminum electrode with zincate treatment liquid containing sodium hydroxide and zinc oxide; immersing it in solution which is prepared by dissolving sodium hypophosphite as a reducing agent into de-ionized water, followed by addition of de-ionized water while adjusting for the pH of 9.0 to 12.0 with sodium hydroxide solution, so as to make a total volume of 1000 ml; nickel-plating the aluminum electrode of the semiconductor device by using electroless nickel plating solution of oxidation-reduction reacting type containing sulfur compound as a reaction promoter, under a condition of the pH at 4.0 to 6.8 and a temperature of 80 to 90.degree. C.