摘要:
An image forming apparatus which comprises a light shutter disposed between a source of light and an image carrier, which is electrostatically charged to a predetermined polarity, and capable of exhibiting a light transmissivity which varies according to a voltage applied to the light shutter. A first voltage of a predetermined direction is applied to the light shutter according to image information during a first period in which a first area of the image carrier passes across the light shutter, to form the electrostatic latent image on the image carrier. This electrostatic latent image is subsequently developed into a toner image. In order to substantially recover the light shutter from a light-induced fatigue, i.e., internal polarization of an electro-optical material forming the light shutter, a second voltage of a direction counter to the predetermined direction is applied to the light shutter during a second period in which a second area of the image carrier passes across the light shutter.
摘要:
An underground lift for use in the repair of a vehicle comprises (i) a pair of lifting apparatuses located in a pit and each having a hydraulically-operated ram which can be extended and retracted from and into the pit and (ii) a vehicle support mounted on the ram and including a pair of sliders and a pair of hydraulic actuating members each connected to one of the sliders for moving the slider toward or away from the other slider, each of the sliders including an attachment holder in which a desired attachment for directly supporting a bottom of a vehicle can be removably set. At least one of the lifting apparatuses is movable toward or away from the other lifting apparatus.
摘要:
A forklift is supported for movement by a pair of elongated wheeled members. The wheeled members are shiftable towards and away from one another to permit the handling of different types of loads. Each of the wheeled members has a rear wheel in the form of a caster as well as two front wheels. The front wheels of a wheeled member can be lowered and raised in such a manner that one of the front wheels is lifted from the ground as the other front wheel is moved down into contact with the ground. A first front wheel of each wheeled member is arranged to roll forwards and backwards while the second front wheel rolls sideways. During the transportation of loads from one location to another, the first front wheels are in contact with the ground. When the wheeled members are to be moved towards or away from one another, the second front wheels are brought into contact with the ground.
摘要:
A recording apparatus has both a copier function and a fax printing function. The recording apparatus is provided with a photoconductive member, an original table on which an original is placed, and a scanner for scanning the original placed on the original table to project an image of the original onto the photoconductive member so that an electrostatic latent image may be formed on the photoconductive member. An optical print head is provided for forming an electrostatic latent image on the photoconductive member based on an electric signal. Accordingly, the recording apparatus has two modes, a copy mode in which an electrostatic latent image is formed by an operation of the scanner and a print mode in which an electrostatic latent image is formed by an operation of the optical print head. A plurality of sensors are provided for detecting the operation of the scanner, which is controlled by a controller in each of the copy mode and the print mode. The electrostatic latent image formed on the photoconductive member is transferred as a visible image on a recording medium by a transfer unit.
摘要:
A light signal generating device having a plurality of electro-optical light shutter elements which are turned on and off individually in accordance with image data. The light shutter elements are connected to individual electrodes each, and also connected to a common electrode. The common electrode and a power source for supplying a voltage to the individual electrodes are connected with a grounding line. Discharge lines are disposed between the common electrode and the grounding line, and switching elements are disposed on the discharge lines so as to prevent discharge currents, which are drawn from the light shutter elements at falls of the driving voltage, from flowing into the grounding line.
摘要:
A method of driving an electro-optical light shutter for use in a recording apparatus. According to the method, an electric field of a predetermined direction is applied to the light shutter during a recording period and a further electric field having a direction opposite to the predetermined direction is applied to the light shutter during a waiting period.
摘要:
A light printer with a light shutter having an array of electro-optical elements is disclosed. The light printer provides with a detection circuit for monitoring temperature and/or time dependent variations regarding the electro-optical elements of the light shutter and a driving voltage control circuit for controlling an optimum driving voltage of the light shutter according to results detected by the detection circuit.
摘要:
A mechanism for automatically fixing a slide plate mounted on a vehicle-body support plate of a lifting apparatus of a system for lifting a motor vehicle for repair thereof comprises a rack and a stopper which are capable of engaging each other to fix the slide plate to the first support plate, or vehicle-body support plate, of an upper lifting element of the lifting apparatus when the first support plate is moved to a lowest position relative to a second support plate, or wheels support plate, of a lower lifting element of the lifting apparatus. According to one embodiment of the invention, the rack may be connected to the slide plate, and the stopper provided in the second support plate. Alternatively, according to another embodiment of the invention, the rack may be connected to the second support plate, and the stopper connected to the slide plate. Alternatively, according to still another embodiment of the invention, the rack may be connected to the slide plate, and the stopper connected to a bottom of the first support plate.