Abstract: System for printing particular information-bearing symbols corresponding to data emanating from a source comprising: source means capable of generating data in a particular sequence; memory means for storing information-bearing symbols; selection means for selecting particular symbols from said memory means corresponding to data emanating from said source; said selection means ordering said particular symbols in a predetermined sequence for printing; a medium adapted to bear printed information-bearing symbols; and transmitting means for transmitting each of said particular characters from said memory means to said medium.

Abstract: A ribbon cartridge is adapted for insertion into a printing machine such as a printing electronic calculator having a printer, a platen, and a ribbon quantity sensing and reversing lever. The cartridge comprises a cassette with an inked ribbon therein connected between two ribbon storage members. The cassette has ribbon guide members for directing the ribbon from one ribbon storage member in between the printer and platen to another ribbon storage member. The ribbon cartridge is improved by incorporating as a part of the cassette a member or members for moving the lever into a non-interfering position during the insertion of the cartridge into the printing machine, the member(s) being positioned below the operating plane of the lever upon complete insertion of the cartridge.

Abstract: A label manufactured from sheet-shaped material, comprising a first part destined for bearing information and a second part connected with the first part and destined to be secured to an article, characterized in that the second part consists of a strip of sheet-shaped material provided with a plurality of incisions extending substantially in the longitudinal direction.

Abstract: A facsimile system comprising transmitting means for scanning a document and encoding the scanned data into run lengths and subsequent Huffman codes and transmitting the scanned data; and receiver means for receiving the transmitted encoded data, decoding same into the original data format and recording such data, the receiving means including decoder means having a read only memory for receiving serial data from the transmitter means to partially address the read only memory with the incoming data bit and a memory buffer register for supplying the read only memory with a vectored address from the read only memory to complete the address of the read only memory, the vectored address having been supplied to the memory buffer register from the read only memory when the previous data bit was received, the vectored address comprising the decoded loop.

Abstract: An improved manually actuatable electric keyboard switch and retainer capable of being easily removed and reoriented or replaced to provide a different function.

Abstract: A driving device for a print head including printing mechanism actuated at predetermined times for marking characters on a data carrier carried by a print roll, comprising motion converting mechanism comprising a housing including an interior continuous gear path, said housing being coupled to said print head; said gear path comprising a pair of opposing straight path portions substantially parallel to the axis of said print roll; said straight path portions being joined, at each end thereof, by respective curved path portions; rotatable pinion mechanism in continual engagement with said gear path; said pinion mechanism being coupled to the shaft of a motor driving mechanism; said straight path portions being mutually separated by a distance greater than the outside diameter of said pinion mechanism and said curved path portions being mutually separated by a distance substantially greater than the distance separating said straight path portions; rotary motion of said pinion mechanism being converted to recipr

Abstract: A method of graphic data redundancy reduction in an optical facsimile system wherein picture elements are optically represented by a grey coded number having N digits where N is at least 5 comprising evaluating at least the first N-2 bit planes to determine whether these bit planes should be processed in high or low resolution, and arbitrarily processing the remaining at least one bit plane at low resolution.

Abstract: A matrix print head comprising a plurality of electromagnets each having an associated armature; a plurality of elongated print elements having ends adapted for printing markings on a data carrier; each of said print elements being associated with an armature; each of said print elements including a straight-line portion substantially perpendicular to said data carrier; said print element straight line portions being parallel to each other and being disposed in the same plane each of said print elements including an armature-engaging portion for resiliently maintaining its associated armature against its associated electromagnet, each of said print element armature-engaging portions permitting its associated armature to pivot about a first surface of its associated electromagnet whenever said electromagnet is energized, whereby the associated print element is thereby moved in a direction parallel to the straight-line portion thereof to thereby permit a marking on said data carrier to be printed.

Abstract: A document imprinter, especially for labels, tickets, tags, and the like, having an elastomeric platen with an outermost thin sleeve which is harder than the underlying platen material thereby resulting in sharper printing. The sleeve is preferably of a material which is smooth and glossy and non-adherent to adhesives, thus minimizing undesired transfer to the platen of adhesive from the web to be imprinted.

Abstract: An analog to digital wave shaping system comprising, a source of analog signals, adaptive threshold circuitry coupled to said source, said adaptive threshold circuitry having an output selected as a function of the intensity of said analog signal compared to a fixed intensity signal, and, comparator circuitry coupled to said source and to the output of said adaptive threshold circuitry.

Abstract: A printing device for printing characters onto a record medium comprising: a printing station; a carrier provided with a plurality of character segments, the character segments being adapted to collectively define an entire font of characters; a moving mechanism for intermittently moving the carrier to thereby move a particular one of the character segments through the printing station during each such intermittent movement of the carrier; a record feeding mechanism for intermittently feeding the record medium through a predetermined amount through the printing station; a hammer for striking the record medium against the carrier; and a control device for controlling the moving mechanism and the record feeding mechanism in a predetermined sequence of steps; the moving mechanism moving the carrier under control of the control device during particular steps in the predetermined sequence of steps; the record feeding mechanism feeding the record medium through the predetermined amount under control of the control

Abstract: A baud or repetition rate generator for providing required clock rates from a oscillator utilizing a commonly available crystal by counting to an integer, N, a number of times, m, and then counting to N+1 the remaining number of times, n, within a cycle having (m+n) parts, and providing an output pulse after each count of N and N+1.

Abstract: A symbol decoding system for decoding symbols comprised of plurality of bars some of which representing characters, comprising, means for providing a series of pulses representative of said bars, means for counting the interval between positive transitions between adjacent pulses, means for counting the interval between negative transitions between adjacent pulses, means for storing said counted intervals, means for testing for certain predetermined relationships among said counted intervals, and means identifying particular characters whenever said predetermined relationships are satisfied.

Abstract: A digital circuit and method for measuring magnetic tape skew of magnetic tape units by recording on two channels of a reference tape a digital bit pattern of alternate pairs of zeros and ones.Digital logic circuitry, which detects this information on a reference tape when read from a magnetic tape unit to be tested, feeds the digital information on one channel to a shift register which is sampled by a clocking signal derived from the other channel. The digital bit pattern indicated at the output stages of the shift register will identify the existance of any excessive lag or lead skew.

Abstract: An article of seating comprises a shell member and a skin member in contact with the shell member, the skin member being attached to the shell member throughout substantially the entire surface area of mutual contact between the skin member and the shell member.

Abstract: A manually actuable keyboard switch is provided having two opposite relieved openings in its base portion so that when it is inserted into an aperture in a keyboard switch retainer having two tabs outwardly extending and depending from opposite sidewalls of the aperture, the tabs spring into their original positions and within said relieved openings to hold said keyboard switch therein.

Abstract: A phase-locked loop circuit for use in a printer which automatically compensates for speed changes in the print head due to changes in line frequency to maintain consistent character width print impressions.

Abstract: A matrix printer and method for printing characters so as to reduce the likelihood of forgery by printing both the desired character and its complement on the same medium.