Abstract: A mechanical torque transmitting apparatus such as a one-way clutch which includes two distinct sets of flexural arms (primary and auxiliary) and a cylindrical engagement surface. The primary flexural arm is adapted to be in edgewise continuous engagement with the cylindrical surface. Preferably, the primary flexural arm has a long, straight, narrow cross-section area and applies a relatively low force against the cylindrical surface when said surface is rotating in a free-wheeling direction. In the non free-wheeling direction, the force against the cylindrical surface increases until the rotational forces overcome and buckle the primary flexural arm whereupon the auxiliary flexural arm is brought into contact with the cylindrical surface to resist further rotation.

Abstract: Method of preparing plural documents based on one text, with partial alterations from one document to another, comprising: storing into a first memory plural sets of phrase data which represent different phrases to be inserted into the respective documents and which are designated by respective phrase-indicating codes; storing into a second memory at least one set of work data comprising selected ones of the phrase-indicating codes and designated by a working-group code; storing into a third memory at least one set of text data representing a text of document and including the working-group code at a position corresponding to a part of the text which is altered; and reading out the text data from the third memory plural times corresponding to the number of the documents to be prepared, while upon reading of the working-group data, reading out from the first memory the sets of phrase data as the same are sequentially designated by the phrase-indicating codes of the work data designated by the working-group cod

Abstract: A printer having a type wheel of the daisy wheel type or the like, which is improved to permit an easy position adjustment of constituents of the type wheel driving mechanism, as well as an easy tilting motion of the carriage in relation to the carrier and an easy attaching of the carriage. Also, the shift of the type wheel can be achieved rapidly and with a light force and the ribbon cartridge can be moved with a light force while suppressing generation of noise.

Abstract: A backspace device in a typewriter comprising: an interposer operable by the operation of a key lever; a cycle bail operable by the interposer; a cycle clutch for intermittently transmitting a driving force from a driving source to a main shaft so that the main shaft can be rotated by a predetermined number of times in association with the cycle bail; an actuating bail for performing a cycle of a motion along a moving path of a predetermined mode by a full turn of the main shaft, while rendering to the interposer a motion in a direction of the interposer leaving the cycle bail during the motion; a backspace link for moving in association with the interposer during the leaving motion of the interposer; a backspace rack extending laterally of the typewriter, supported rotatably about an axis laterally disposed and turned to a working position by the backspace link; and a backspace pawl fastened onto a carriage so that it can be reciprocated a predetermined distance in the lateral direction by a cam rotatable in

Abstract: The ink layer of a thermal transfer printing ribbon is overcoated with a hold-off layer which serves to make the resulting printing more easily correctable. The hold-off layer operates by preventing penetration by the ink layer into the substrate being printed upon.

Abstract: An inked ribbon cartridge has two sets of ribbon feed mechanisms, one for each core means around which the ribbon is wound, allowing the ribbon to travel back and forth so that the cartridge can be loaded upside down when the upper half of the ribbon has been used up thereby doubling the useful life of the cartridge. Two springs apply a predetermined force to two ratchet wheels which are connected to first and second core means for preventing an over-rotation of the core means. Each feed mechanism comprises a feed driven roller and a feed drive roller.

Abstract: A method and apparatus for typing Japanese text is disclosed. The method is characterized by operator manipulation of a keyboard to produce input signals to a microprocessor. The input signals are in the form of kana, English alphabet, numerals, and punctuation, as well as delimiting signals which may be used in combination with kana input to produce corresponding text material in kanji. The microprocessor is responsive to combinations of the kana input signals and delimiting code signals to produce adjusting outputs which call up from memory signals which produce the desired kanji output. A CRT display is provided for displaying keyboard signals and, when called for, kanji symbols from memory.Where it is desired to type kanji symbols which cannot be called up by the operator through the use of kana and delimiting coding signals, alternative procedures using word analysis and graphic inputs are provided.

Abstract: An overstrike ribbon has its color transfer layer formed with an oleaginic face which includes a polyoxyethylene fatty acid ester of polyhydric alcohol which as increased ability to backup the fatty dyestuff, and also contains a filler from the pores of which the color paste can be released with successive impacts.

Abstract: A printing apparatus is provided which utilizes rolling pressure contact for printing, and includes a plurality of sets of serially arranged character elements mounted for movement on the external surface of a printing drum. Movement of the sets to place a desired character into printing position is accomplished by controlling the speed of a motor driving a pulley connected by cable to a given character set, relative to the speed of a motor driving the printing drum in rotational movement.

Abstract: A drive control system for controlling a drive motor in response to external command signals. The system comprises a first control arrangement for obtaining numerical values corresponding to amounts of successive intermittent operations of the drive motor responsive to respective external command signals, summing the obtained numerical values, and subtracting from a current sum of the numerical values a numerical value corresponding to a non-operation time period during which the drive motor is held at rest between the successive intermittent operations. The system further comprises a second control arrangement for inhibiting the operation of the drive motor responsive to the next command signal, for a length of time corresponding to the current sum after the drive motor has completed each of the intermittent operations, whereby the temperature of the drive motor is kept below an upper limit.

Abstract: A paper holding, feeding and inserting apparatus for a printer, comprising a first paper stacker for storing sheets of paper of one kind, a paper feeding device to feed the sheets from the first paper stacker to a printing station, and a second paper stacker which receives the printed sheets and is supported pivotally from its operative position to its inoperative position at which is provided a path along which a sheet of paper of another kind is inserted to the printing station. A drive motor to drive feed rollers of the paper feeding device may be controlled such that its operating speed is changed from an initial low speed to a higher speed during the feeding of a sheet to the printing station.

Abstract: A printer includes a carriage supporting a printing mechanism, a platen for carrying printing paper, a detector for detecting presence of the printing paper on the platen, a device for determining margin and/or tabulator positions in relation to an end of the platen, a central processing unit for determining the distance between the end of the platen and the printing paper in response to the detector to convert the margin and/or tabulator positions into positions determined from the edge of the paper and to control the printing mechanism in response to thus converted positions, and a memory for storing signals representing the margin and/or tabulator positions.

Abstract: A drive mechanism for a member to be driven in one direction is disclosed. The mechanism is incorporated in an electronic typewriter and includes a clutch including a clutch spring which provides a driving connection between a small DC motor and the member to be driven of the typewriter. Means is provided which normally holds a driven member of the clutch to a particular angular position and, when the motor is energized, it releases the driven member to allow the driven member to be rotated by the motor. After a cycle of rotation of the driven member, the holding means positively stops rotation of the second element and hence of the driving member and the motor.A new and efficient ribbon feed mechanism is also disclosed which enables selective use of a carbon ribbon and a fabric ink ribbon depending upon a cassette mounted thereon.

Abstract: A print head carriage assembly is provided which is especially suitable for use in a thermal dot matrix character printer. The assembly includes a belt, which in one embodiment is formed of laminations of film. The belt is formed into a loop with a free end by a tensioning device; the belt loop tautly passes around a pair of guides, one of which is bidirectionally rotatable to transport a print head clipped to the loop between the two guides and across a platen. The control signals to the print head are passed via conductors affixed to the belt from the free end of the belt to the print head.

Abstract: An impact printing mechanism which contains a great number of printing types in a minimized spacing is disclosed. Types are arranged in rows of columns on a plurality of substantially planar type carrying elements which are accommodated in equally spaced parallel relationship in a removable casing. Selection of a type is attained by three dimensional movements including horizontal movements of the elements within and perpendicular to their planes and a vertical movement of an element within its plane.The type carrying elements are carried on a carrier while a print hammer is mounted on an independent carrier. The former carrier includes an outer section and an inner section mounted for movement on the outer section, and means for lifting a type carrying element is mounted on the outer section.

Abstract: A printing apparatus of modular construction includes a printing mechanism with a pivotally mounted printing head, a continuous form feed part and an individual form feed part. To provide a compact construction in which the printing operation can be viewed by the operator, the individual form feed part is constructed as a base unit so that the individual form is fed into the apparatus and transported horizontally. The printing mechanism and continuous form feed part are positioned above the base unit. As a result, with the apparatus mounted on a table, printing on the printing base of the continuous form feed part takes place below the eye level of the operator. To insert the continuous form, the continuous form feed part can be pivoted away from the printing mechanism. In addition, the printing mechanism and the continuous form feed part can be pivoted relative to the base unit to gain access to the path of the individual forms on the base unit.

Abstract: An erasing ribbon is guided by the same vibrator as the typing ribbon behind the lower part of the typing ribbon. An erasing key acts on the back-spacing mechanism of the typewriter and on an element which suppresses the carriage escapement during a correction cycle initiated by any one of the typing keys. The necessary settings are made by a slide which stores the erasing key command. In particular, the slide acts on a lever which varies the stroke of the ribbon vibrator for selecting the erasing ribbon, also on a device which causes the erasing ribbon to advance and on a mechanism which inhibits the escapement during the execution of the correction cycle. The setting slide is then returned to rest by the first typing key operated after the erasing cycle. A correction selection lever acts on the lever which varies the stroke of the ribbon vibrator and selects permanently the erasing ribbon independently of the erasing key for a forward erasing of the characters of one or more words.

Abstract: To enable a microprocessor to operate within its bandwidth limitations while controlling a serial printer, means are provided for adjusting the microprocessor system clock rate when the printer is in its rate mode. In particular, the output of a counter clocked by the pulses from an encoder representing the velocity of a member is controlled; the output of the counter being selectively applied to the microprocessor in accordance with the velocity of the member being controlled.

Abstract: The invention relates to a composition device for texts in Arabic letters which comprises a keyboard having several keys each corresponding to only one basic letter in all of its shapes, and an electronic device having a memory retaining the codes corresponding to all the shapes of each of the basic letters. A working memory retains the characteristics of the keys depressed immediately before and after the considered key, and a logic determines according to the characteristics memorized in the working memory, the code corresponding to the appropriate shape of the basic letter.

Abstract: An electronic typewriter having calculating, displaying and editing capabilities as well as printing capability. The typewriter includes a main control device having three different modes in which the typewriter is operated. In the first mode, the control device performs an arithmetic operation which is defined in a statement including letters, at least one arithmetic symbol and plural numerical values entered through letter, numeral and arithmetic symbol keys. Further, in the first mode, the control device directs a display device to display the statement and a result of the arithmetic operation, and permits the displayed characters to be edited for correction or change. In the second mode, the control device permits the above items of operation in the first mode and directs a printing device to print the displayed characters. The third mode enables the typewriter to display entered characters and print the characters as they are entered and displayed.