Abstract: Ink jet apparatus for use with hot melt ink has an integrally connected ink jet head and reservoir system, the reservoir system having a sloping flow path between an inlet position and a sump from which ink is drawn to the head, the reservoir being housed in a housing of good heat conductivity material with a heater connected thereto, and further having one or more heat conducting elements positioned between the inlet position and the sump, which elements are constructed to act both as baffles and as heat conducting fins.

Abstract: To obtain a good print quality in metal paper printers, the print current, after ignition of the arc, must be rapidly reduced to a fraction of the value necessary for ignition. For this purpose, two transistor power stages (T3, T4) are connected to the print electrode (2). Their partial currents form the print current, whose rapid reduction after ignition of the arc is obtained by the two transistor power stages being operated at voltages (U2, U3) of different magnitude. The second transistor stage (T4) is operated at a voltage (U3), whose magnitude corresponds to the drop in potential occurring upon ignition between the grounded metal layer (3) of the record carrier (4) and the print electrode. As a result, the second transistor stage is switched off when a diode (D) connected to it becomes non-conductive.

Abstract: This device comprises an electrode, the diameter of which is of the same order of magnitude as the drop to be projected, which emerges on the surface of an electrically insulating support. This support is immersed in a reservoir of liquid which comprises an opening. The support is placed so that the face thereof with which the electrode is flush, is located at a certain distance recessed from the plane of the opening so that it is covered with the liquid contained in the reservoir in which is located the counter-electrode. These electrodes are connected to a source of intermittent current designed to form an electric field through the liquid which, by concentrating on that part of the electrode emerging from the support, causes the projection of a drop of liquid.

Abstract: A record head of an image recording apparatus is reciprocally tilted to suitably vary the contact condition between the surface of the record head and that of a recording medium, thereby removing toner particles which are momentarily stuck to the record head surface. To maintain styluses of the head unchanged in position, the reciprocation of the record head is effected for the interval between the end of a recording cycle for one page and the start of the next recording cycle for another page, which interval has no influence on the image recording operation.

Abstract: A digital laser platemaker for imaging an electrophotographic member by electrostatic techniques using information which is derived from a source of binary data. The binary data may be achieved by scanning a pattern or may be synthesized electrically to represent that which it is desired to reproduce on the electrophotographic member. The binary data is applied to a pixel generator which is constructed and arranged to produce an output in the form of signals for driving an acousto-optical deflector that in turn deflects a laser beam to form a composite of rays. The composite of rays represent the columns of a pattern to be applied to each pixel which is generated, the rows of the pixel being represented by the output of a shaft encoder that is synchronized with the rotation of a cylinder carrying the electrophotographic member. The pixel generator produces hexagonal pixels and the pattern in each pixel represents density information derived from the binary data originally received by the pixel generator.

Abstract: A cleaning apparatus for a recording head in a magnetographic printing device of the type having a movable magnetic imaging tape in endless belt form is disclosed. The apparatus is especially effective for cleaning thermal printheads for thermoremanent magnetic imaging systems, and comprises a cleaning member adapted for reciprocal movement into and out of a nip formed by the magnetic tape and the printhead. In one embodiment, the cleaning member is a flexible substrate attached at one end to a rotatably mounted spool. The substrate is wound on the spool with the loose end resting on a guide plate and confronting the nip. The spool is periodically rotated to drive the substrate through the nip while the tape is moving and then is rotated in the opposite direction to rewind the substrate and withdraw it from the nip. In another embodiment, the cleaning member is a flexible substrate which is maintained in a planar configuration by parallel guide plates.

Abstract: The instant invention relates to a method and apparatus for driving an electrostatic recording head for recording images on a medium comprising a plurality of pin electrodes, the pin electrode arrays are separated into alternate even and odd arrays positioned on said recording head (A.sub.1, B.sub.1, A.sub.2, B.sub.2 . . . A.sub.k, B.sub.k . . . where A.sub.k are odd arrays and B.sub.k are even arrays), a plurality of control electrodes, each positioned adjacent one or more associated pin electrodes, each pin electrode array and associated control electrodes, when energized, producing the images, the pin and control electrodes are controlled by separate order control circuits which control the pin electrostatic arrays and the control electrode arrays for producing the images in the following order alternating between odd and even arrays:A.sub.N+1, B.sub.1 . . . A.sub.2N, B.sub.N,A.sub.1, B.sub.N+1, . . . A.sub.N, B.sub.2N,A.sub.3N+1, B.sub.2N+1 . . . A.sub.4N, B.sub.3N,A.sub.2N+1, B.sub.3N+1 . . . A.sub.

Abstract: A recording method and apparatus therefor make the recording of images by the following process: A powder-like toner having a high electric resistivity and a charge retention property is held on a donor and is brought into contact with a multi-stylus electrode. A pattern signal is applied to the multi-stylus electrode and the toner is electrically charged or quenched by the charge injection of the multi-stylus electrode and a charge distribution is formed in the toner on the donor, corresponding to the pattern signal. The charge distribution is used for the formation of a visible image. The visible pattern can be recorded on an electrically conductive recording member or a recording member having uneven surface by utilizing an image transfer medium. By transferring toner to a latent image bearing member on which a latent electrostatic image is formed, a visible pattern modified by the pattern signal can be obtained.

Abstract: A weighing system is disclosed which operates in conjunction with a scale that has a trigger mechanism for terminating the flow of material into the scale's bucket. This system automatically periodically revises a tare signal stored in a latch circuit for combination with a weight signal to produce a net weight signal. The tare signal provides a measure of the residue stuck in the scale bucket. In an additional embodiment of the invention, a programmable controller is used as the means for periodically resetting the tare signal and is used to evaluate the final weight data to determine the average weight and the standard deviation of the weights. These determinations are used by the controller in combination with a predetermined weight to arrive at a computer setpoint signal for adjustment of the triggering of the flow termination so that the final weights will most closely approximate the predetermined weight.

Abstract: A measuring apparatus for measuring various kinds of products irregular in weight such as vegetables and fruits, confectionery, secondary processed goods, perishable foods and the like with constant qualities. According to the invention, the apparatus comprises a distributing table supplied with the products to be measured, feeding troughs arranged about the distributing table to form a plurality of branched passages for the product, pool hoppers and measuring hoppers continuously connected to the respective troughs so as to permit the product on the distributing table to be introduced through the feeding troughs and the pool hoppers into the measuring hoppers, and computer means for selecting a combination of the measuring hoppers whose weight of product accommodated therein is equal or near to a set weight and opening the selected measuring hoppers to exhaust the measured product.

Abstract: A system having a combinatorial weighing apparatus for obtaining an optimum weight of a batch of articles that exhibit a variable apparent specific gravity, and for packaging the weighed out articles in a packaging vessel. The system includes a volume detecting unit for detecting the volume of the articles supplied, a density detecting unit for detecting the density of the articles based on the volume value obtained from the volume detecting unit and a weight value obtained from the weighing apparatus, and a target weight adjusting unit for adjusting a target weight value within preset allowable limits on the basis of the detected density in such a manner that the volume of the articles discharged into the packaging vessel becomes substantially constant. The system is also provided with a crusher for adjusting the size of individual articles on the basis of the detected density in such a manner that the density of the articles becomes substantially constant.

Abstract: An image forming apparatus has both of the function of displaying a toner image recorded on an image bearing member and the function of transferring the recorded toner image to a transfer material and obtaining it as a print. Particularly, the apparatus makes reversal of the direction of movement of the image bearing member possible by developing the photosensitive member simultaneously with the application of light information in a process which does not require a charging step, and forms a toner image in the form of a positive image or a mirror image on the image bearing member. The positive image is used for display, and the mirror image is used for printing.

Abstract: The invention is a driving circuit for an electrostatic recording head which reduces the turn-on time, the storage time and the turn-off time of the driving circuit output pulses. Mutually complementary first and second transistors are connected with their collectors in common. A first driving signal is supplied via a coupling capacitor to the base of the first transistor, and is also supplied to the base of the second transistor. High voltage is supplied to the emitter of the first transistor. The output signal is obtained from the interconnection of the common collectors. The first driving signal has three sequential levels, two of which occur within the time period when the recording picture signals are supplied. The first level e.sub.2 is the highest and occurs during the beginning portion of the recording signal and the second level e.sub.1 is lower than e.sub.2 and occurs during the remaining portion of the recording signal. The third level is the smallest (i.e.

Abstract: A weighing apparatus of the vibratory string type is disclosed, wherein a current-carrying string connected intermediate its ends between a movable load-responsive member and a frame vibrates in a magnetic field produced by a permanent magnet mounted on the frame. The ends of the string extend beyond the clamping connections with the movable member and the frame, respectively, for electrical connection with the conductors to the string drive and load detection circuit. This driving and detection circuit and the aforementioned conductors are mounted on a printed circuit board that is connected with the frame, thereby to avoid the need of a separate power supply with its disadvantageous effect on string vibrations. In one modification, the protruding string end associated with the movable member comprises a tension spring for prestressing the string.

Abstract: Print head for an electroerosion printer, with print electrodes arranged in rows and/or columns in a holder, and with at least one slightly shorter sensor electrode at the trailing edge of the print head to control the feeding of the print electrodes compensating their burning-off and/or abrasion, at least the sensor electrode (7) being inclined approximately in the direction of the median normal to the surface of the unprinted lateral surface of the trough-like depression.

Abstract: An electrolytic print head comprises a plurality of styli (16, 18) between electrically insulative laminae (38, 42, 48, 38', 42', 48') which space the styli from planar reference electrodes (20, 22, 24). The styli and reference electrodes are fabricated of a mixture of ruthenium dioxide and corrosion resistant glass, and the insulative laminae are fabricated of corrosion resistant glass. The method of manufacture of the print head facilitates use of styli and reference electrodes requiring high temperature processing prior to deposition of metal conductor tracks for the styli and reference electrodes.

Abstract: Ink jet apparatus for utilizing hot melt ink is provided, comprising a printing head and a reservoir for holding a supply of hot melt ink, the reservoir having a normally open port or fill tube with an end face residing within the volume of the reservoir, the end face being located at about the volumetric center of the reservoir. The reservoir is maintained with an ink volume of no more than about half of the reservoir volume, so that ink can not spill through the normally open port when the apparatus is tilted.

Abstract: A recording device for linearly recording information upon a moving photoreceptor using a recording head that can be manufactured more readily. The recording head is made with a plurality of modules, each module comprising LED chip means having an aggregate length (n) greater than the length (o) of the base plate of the module and projecting exteriorly of the module side edges, and a common integrated control circuit for all the LED's mounted on the base plate of a given module, the outputs of such circuit being connected by wire bonding to the respective LED's on the module.

Abstract: A combination weighing machine has a plurality of scales that are periodically dumped and reloaded with products from a bulk container. In each cycle of machine operation, the loaded scales are surveyed, and a combination of the scales which most accurately yields a desired target weight is dumped into a single package. The dumped scales are then reloaded and the process is repeated. Each of the scales has an associated vibratory feeder and accumulator which receives the product from the bulk container and dispenses the product to the scale as needed. In order to feed the scales with loads that provide a large selection of combinations close to the target weight, a control for the vibratory feeders regulates the duration and amplitude of the vibrations in accordance with the loads measured in preceding machine cycles. Also described is a method of dealing with inactive scales by feeding small quantities of articles to the scales requiring reloading until the inactive scales are dumped.

Abstract: An automatic method and associated apparatus for weighing material and in particular for determining signature counts in association with a printing press. The system provides for the automatic registration of tare weight and for automatic removal detection and automatic registration of the last weight prior to removal. Also, in one embodiment described herein there is displayed a time signal representative of the time to go with regard to obtaining a desired full complement of good signatures.