Abstract:
An enciphering system comprises a transmitter (1) and a receiver (2) communicatable with each other and incorporated in a keyless entry system. The transmitter (1) comprises a memory (11) for memorizing an ID code, a first micro processor (12) for enciphering the ID code outputted from the memory (11), and a transmitting section (13) for transmitting an enciphered ID code produced by the first micro processor (12). The receiver (2) comprises a receiving section (22) for receiving the enciphered ID code transmitted from the transmitter (1) and a second micro processor (21) for decoding the enciphered ID code. The first micro processor (12) divides both the ID code and an associated rolling code into a plurality of blocks, the rolling code varying its content in response to each transmission of the ID code through the transmitting section (13), determines a repetition number for an enciphering arithmetic operation in a process of the arithmetic operation, and repeats the enciphering arithmetic operation in each block according to the repetition number, thereby enciphering the ID code. The second micro processor (21) decodes the enciphered ID code by reversely performing the operation of the first micro processor (12).
Abstract:
An image forming apparatus including an image bearing member for bearing an image thereon, an intermediate transfer member having a base body and an elastic member provided outside the base body and onto which an image is transferrable from the image bearing member, and a second transfer member forming a nip portion between the second transfer member and the intermediate transfer member, for transferring an image from the intermediate transfer member to a transfer material in the nip portion. The hardness of the surface of the second transfer member is greater than the hardness of the surface of the intermediate transfer member.
Abstract:
An image forming apparatus includes image forming device for forming an image on a recording material, the image forming device including an image bearing member, a charging member for charging the image bearing member and a voltage source for supplying a voltage to the charging member; and determining device for determining a substantial intersection between an actual voltage-current characteristic curve between the charging member and the image bearing member and a predetermined voltage-current curve predetermined for the charging member, and for determining a bias to be applied to the charging member during image forming operation of the basis of the intersection.
Abstract:
An image forming apparatus for forming an image on a recording medium, having an image bearing member; an image forming device for forming an image on the image bearing member; a transfer device for transferring the image formed on the image bearing member by the image forming device onto a recording medium; a heat fixing unit for fixing the image transferred to the recording medium by the transfer device onto the recording medium; a power source; and a controller for detecting a temperature increased condition of the heat fixing unit when the power source is turned ON and for determining a temperature adjust temperature of the heat fixing unit at a fixing operation in accordance with the detected result.
Abstract:
An image forming apparatus comprises includes a feeder means and recorder. The feeder feeds a sheet of recording paper to a predetermined position in response to a spare paper feed signal instructing the feeding of the sheet of recording paper to the predetermined position preliminarily, and then feeds the sheet of recording paper being stopped at the predetermined position again in response to a record request signal. The recorder records an image on the sheet of recording paper fed by the feeder means through an electrophotographic process. The recorder means starts preparation to execute the electrophotographic process upon receiving the spare paper feed signal. As a result, throughput is increased without causing other problems.
Abstract:
A feed interval of continuous feeding is changed according to the set temperature of a heating member or the size of a recording material, or a feed interval is long for a predetermined time after a state for forming an image is established and is then decreased after the predetermined time has passed, thereby causing a slight increase in the temperature of the non-passage portion.
Abstract:
An image forming apparatus has an image supporting member for supporting a toner image, a transfer rotating member forming a nip with the image supporting member and electrostatically transferring the toner image formed on the image supporting member to a recording material, a fixing device for fixing the toner image to the recording material holding the toner image, and a guide member for guiding the recording material so that the angle between the direction of separation of the recording material from the transfer rotating member and the tangent to the image supporting member at the center of the nip is at least 2.degree. in a direction toward the image supporting member. The fixing device has a fixing rotating member, which contacts the toner image on the recording material and to which a bias of the same polarity as that of the toner is applied, and a pressure rotating member in pressure contact with the fixing rotating member so as to hold the recording material between the fixing rotating member and the pressure rotating member.
Abstract:
An image fixing rotatable member includes an elastic layer into which inorganic filler material is mixed; a bonding layer on the elastic layer, containing resin material; and a resin layer applied and sintered on the bonding layer. The elastic layer below the bonding layer has a heat conductivity higher than that of the resin material in the bonding layer and contains an inorganic filler having a heat conductivity higher than that of the resin material used in the bonding layer. Because of these specific features of the bonding layer and the elastic layer, the resin in the bonding layer functions as a thermal barrier during the sintering of the resin and therefore the heat transmitted to the rubber layer is not accumulated but is effectively dissipated as a result of the high conductivity of the inorganic filler.
Abstract:
The apparatus includes an ignition instruction signal generating unit for repeatedly generating a first ignition instruction signal instructing an AC discharging duration and a second ignition instruction signal instructing the current flow time of a first primary coil at each ignition timing; and an ignition control circuit unit for causing the first and second switching elements to perform a push-pull operation for a predetermined period of time upon reception of a given ignition instruction signal. When it is detected from a current detection signal from the current detection element upon reception of the first ignition instruction signal that the current of one of the first and second closed circuits has reached a predetermined value, a signal for turning OFF the one of the first and second closed circuits is supplied to one of the first and second switching elements and a signal for turning ON the other closed circuit is supplied to the other switching element so as to enable the push-pull operation of the switching elements. Accordingly, one of the switching elements is turned ON in response to the second ignition instruction signal for the current flow time of the primary thereby, and is then turned OFF. Thus, an ignition timing can be determined precisely, and a sufficiently high voltage can be obtained.
Abstract:
A method of manufacturing the peripheral wall of a tank for an oil-immersed electric apparatus which comprises manufacturing a panel unit through the steps of:fabricating a panel by pressing a thin steel sheet to form an upward extending flange along both edges of the panel and provide a plurality of reinforcement depressions concaved toward the backside of the flat portion of said panel;folding the panel into two parts with the surface of the panel kept outside along the central line extending between both edges of the panel to fabricate a hollow fin;joining both sides of the folded fin by spot welding the reinforcement depressions; andwelding together the closely facing edges of both sides of the fin,and constructing the peripheral wall of the tank by joining together a plurality of panel units fabricated through the above-mentioned steps by welding the flanges of said panel units.