Abstract: The photocopier uses a development process employing a magnetic brush formed on a rotating sleeve (102) of non-magnetic material in which a system of permanent magnets (108) rotates. The outer surface of the sleeve is subjected to a sandblasting process after grinding in order to create a very uniform finely roughened surface in order to make the thickness of the toner layer forming the magnetic brush constant. The photocopier also employs a toner fixing system operating cold and under pressure by means of a pair of rollers (56, 58) of different diameter rotating at the same angular speed in order to create slippage of the upper roller relative to the lower roller for the purpose of obtaining perfectly flat copies. The copier also contains a single circuit board (80) for the low voltage and high voltage supply.

Abstract: The ink jet dot printer comprises a head mounted on a carriage movable along a platen supporting the paper and is formed by a plurality of tubes and piezoelectric transducer for ejecting the ink, which are supported by two parallel plates spaced from one another, between which a polymerizable resin is cast to form a single block. The tubes are aligned in a single row F--F' in a direction inclined with respect to the printing line, in such manner that the distance between the extreme tubes measured perpendicularly to the printing line is equal to the maximum height of the characters. On the outside of the front plate supporting the tubes there is fixed a thin plate bearing a row of nozzles, each of which is aligned with the corresponding ejector tube.

Abstract: A control circuit for a stepping motor comprises a voltage multiplier which, in synchronism with the motor timing pulses from a pulse generator multiplies the supply-voltage in such a manner as to obtain an energizing voltage which, at commencement of the excitation of each motor winding, has a value which is a multiple of the value of the supply voltage, in order to reduce the rise time of the current in the windings, and to thus improve the dynamic torque availability. A voltage doubler and tripler are described as examples of the circuit.

Abstract: An apparatus for recording flexible magnetic disks contained in envelopes comprises a mandrel engageable with a central zone of the disk to rotate the disk within the envelope, and a carriage 41 which is movable radially relative to the disk and on which there is mounted a pair of magnetic heads which oppose each other and make contact with the magnetisable surfaces of the disk. The carriage 41 is moved on guides 48 by a stepping motor shaft 44 by way of a pair of flexible strips 50, 51 which are partly wound about a hub 59 on the shaft 44. The ends of the strips are retained by longitudinal pins 70 loosely fitted into an eccentric bore in the hub 59 without the aid of screws. Pegs 71 on the pins 70 pass through holes in the ends of the strips 50 and 51 and are arrested against the motor shaft 44. A presser pad, which presses the envelope containing the disk against a reference surface of the apparatus, is lowered by an electromagnet which also causes the upper head to lower.

Abstract: A cartridge for a typing ribbon and spools for a correcting ribbon are mounted on a common frame which can tilt about a spindle. In a lowered position of the frame the typing line behind a daisy wheel is visible. The frame is raised by a first stroke to the position shown to dispose the typing ribbon over the typing point on the platen. A longer stroke raises the correcting ribbon to the typing point and this longer stroke also actuates an automatic ratchet wheel and pawl type of feed mechanism for the correcting ribbon. The two strokes of the frame are controlled by a disc comprising two cam tracks with a common part and separate parts having different degrees of eccentricity relative to the common part.

Abstract: The inked element in the form of a ribbon comprises a plastics support coated on one side with a thin layer (2 to 4 mm) of thermotransferable inking mixture which comprises, in addition to a pigment or dye, a binder of thermoplastic resin, in particular a styrene or terpene resin, a plasticizer and a softening compound constituted by one or more waxes in a percentage between 18 and 50%. The plasticizer is constituted by an ester of phthalic or phosphoric acid or another polymer.

Abstract: The printing and correcting device is applied to a daisywheel printer and comprises a frame supporting a cartridge for a typing ribbon and a correcting ribbon arranged below the typing ribbon. The frame is able to swing as the result of operation of an electromagnet, from a rest position providing visibility of the print, to an intermediate position for printing the characters. A second electromagnet raises the frame through a greater length of travel in order to position the correcting ribbon in front of the printing point. A rotating electromagnet causes automatic unidirectional advance of the typing ribbon after each character has been printed. The correcting ribbon is wound between two spools and its motion is provided by means of a pawl which engages with a gear wheel for driving the spool only in the case where the path of travel of the frame is greater than that which relates to positioning of the typing ribbon.

Abstract: The printer comprises a solid or liquid ink jet head 100 arranged to print one dot at a time on paper running over a platen 80. The head is carried by a carriage 48 movable transversely with simple harmonic reciprocating motion. In order to reduce the effect of inertial forces when the carriage reverses its movement, the drive is effected by an eccentric peg 70 on a disc 276, the peg engaging in a guide slot 54 of the carriage perpendicular to the direction of reciprocation. An eccentric can track 71 in the disc engages a peg 92 on a counterweight 90 for counterbalancing the inertial forces of the carriage. In order to synchronize the printing operation with the carriage movement, an optical strobe disco 258 is rigid with the disc 276 and has slots 258 disposed at a pitch varying according to the harmonic motion. The platen 80 in rotated intermittently by a helical cam 277 carried by the disc 276 and a peg wheel 280, 281.

Abstract: An original document feeder for copying machines, for automatically positioning originals of any substance on the exposure surface, so avoiding opening and closing the original pressing cover at each change of original, and with a considerable reduction in idle times. The feeder comprises a set of friction rollers of flexible material mounted on a single shaft, these facing each other in a transverse slot so as to compel each original sheet to bend in such a manner as to exert a force against the rollers which is greater the higher the substance or rigidity of the sheets. The feeder is also provided for a device for automatically aligning the originals, and a timer system for coordinating the conveying stages of the originals with the copying machine cycle.

Abstract: The machine comprises a tined wheel for building the banknotes, a conveyor for presenting them to the customer through a slot, and a printer for printing the receipt. This is cut off by a blade and is guided by a system of belts, in such manner as to be fed into the wheel. The receipt is thus bundled together with the banknotes and is presented to the customer with them through the slot, avoiding the risk of the customer forgetting to collect his receipt before a vandal proof shutter closes. The printer can print a journal strip in addition to the receipt.

Abstract: A printing-needles device to write on a registration support alphanumerical characters and graphic symbols according to a dots matrix in which the dots are printed by directly inking of writing ends of the needles without interposition of inked ribbon between needles and registration support. The ink is contained in a removably mounted cartridge and is carried by capillarity from cartridge to needles by means of cloth-fibres cable which has an end dipped into ink and the other end in contact with a side of needles. The needles have opposite side guided by a lateral wall perpendicular to terminal wall which guides the writing ends.

Abstract: A data processing apparatus is provided with a keyboard and a programmable read-only memory, for example of EPROM type, for durably preserving data which define the manner of operation of the apparatus. A programming circuit connected to the apparatus allows a new memory of the same type to be programmed either by automatic recording of data contained in the original EPROM memory, or by data entered by means of the keyboard in order to make available a new read-only memory provided with data modified relative to the data of the original memory.

Abstract: The printer comprises a solid or liquid ink jet head 100 arranged to print one dot at a time on paper running over a platen 80. The head is carried by a carriage 48 movable transversely with simple harmonic reciprocating motion. In order to reduce the effect of inertial forces when the carriage reverses its movement, the drive is effected by an eccentric peg 70 on a disc 276, the peg engaging in a guide slot 54 of the carriage perpendicular to the direction of reciprocation. An eccentric cam track 71 in the disc engages a peg 92 on a counterweight 90 for counterbalancing the inertial forces of the carriage. In order to synchronize the printing operation with the carriage movement, an optical strobe disc 258 is rigid with the disc 276 and has slots 258 disposed at a pitch varying according to the harmonic motion. The platen 80 is rotated intermittently by a helical cam 277 carried by the disc 276 and a peg wheel 280, 281.

Abstract: The printer comprises a thermal print head on the rear side of a plate (54) carried by a carriage (27) and cooperating with a bar (83) which is pivoted on an axis (88) in such a manner as to adapt its angular position to the surface of the head, on the basis of the thickness of the paper. The paper is fed by two rollers (9 and 10) which are rotated in a differential manner in order to keep the paper under tension. One of the rollers is mounted on an eccentric (92) to enable the parallelism of the two rollers to be adjusted. The head (53) is removably mounted on the carriage (27) and is connected to a connector by way of a flexible ribbon cable (64) which is connected to the head (53) by way of a flexible cable in the form of conductor rings compressed between the conductors at the end of the cable and printed conductors on an alumina plate (56) cemented to the plate (54).

Abstract: A magnetic brush (10) comprises a sleeve (16) of nonmagnetic material which rotates about magnets (14) fixed on a shaft (12) which rotates in the opposite direction to the sleeve. A toner container (20) adjacent to the sleeve feeds the toner (T) on to the outer surface of the sleeve through a slit (36) which extends over the entire length of the sleeve. In order to prevent the formation of lumps of toner at the feed slit and break up any lumps already in the container, a portion (32) of the base wall of the toner container is of arcuate shape and is spaced from the sleeve by a distance equal to the thickness of the toner layer (52) on the sleeve. The arcuate wall defines the toner feed slit (36) in cooperation with a side wall (60) of the container. A baffle (26) divides the container into a main chamber (42) and secondary chamber (46) which communicate with each other by way of a narrow passage between the baffle and the arcuate wall (32).

Abstract: The apparatus comprises a reversible conveyor disposed between a deflection station and an access slot. The deflection station allows the dispensing of an empty envelope from a magazine 11 towards the conveyor and the deposition of an envelope containing valuables from the conveyor into a drawer. The apparatus further comprises a printing device at an intermediate position along the length of the conveyor for printing data serially on the envelope during its transfer to the drawer. This is disposed in a safe and is of the sealed type, including two motor driven rollers for inserting the envelope into the drawer. The rollers can be locked in such a way as to close the access to the drawer when the drawer is open. The apparatus is controlled by a microprocessor in two way communication with a central control unit of the apparatus.

Abstract: The electrophotographic recording element comprises a charge generator compound formed from aniline sulphonephthelein derivatives, in which at least one phenyl ring comprises an amino group substituted by an aromatic or heterocyclic group. The recording element may consist of an electrically conducting support on which a layer is deposited containing the charge generator compound dispersed in a resin, then covered in its turn by a further electric charge transporter layer containing an oxadiazole derivative in solid solution in a resin. The recording element has high sensitivity to luminous radiation over a range extending from visible radiation to infrared, and can consequently be used in normal copying machines and especially in laser printers operating with a wavelength up to about 850 nm.