Abstract: An ink ribbon cassette mounting mechanism is generally constructed with a guiding device for guiding an ink ribbon cassette, housing an ink ribbon and having an engaging part on the wall surface thereof, from a predetermined direction to a predetermined position. An engaging and holding device is engaged with the engaging part on the ink ribbon cassette to hold the same at the predetermined position, when the ink ribbon cassette is shifted from the predetermined direction to the predetermined position; and releases the engagement with the engaging part, when the ink ribbon cassette is further shifted in the predetermined direction.
Abstract: An auxiliary ribbon separator for use on a dot-line printer is positioned to prevent vertical ribbon displacement in the presence of upward forces such as caused by perforations on continuous feed paper. The auxiliary separator is located so that the ribbon is guided past an end of a front yoke. The front yoke serves as a course ribbon guide and is a component of the electro-magnetic assembly of the print head associated with the printer. The auxiliary separator may be shaped so as to facilitate loading of the ribbon in the printer.
Abstract: A ribbon cassette with re-inking mechanism includes a removable ink supply tank having a low density ink element and a high density ink element, and an ink transfer roller engaging the high density ink element and having an uneven surface on the periphery thereof for carrying ink in controlled manner from the high density ink element to the ribbon.
Abstract: An input keyboard arrangement is provided for microcomputers, computer terminals, and other devices for processing alphanumeric information. The keyboard arrangement facilitates entry of information by non-typists, increases keying accuracy, enables use of the three strongest fingers for depressing keys, and minimizes the time needed to master the keyboard. The keyboard is arranged in a vertical layout with a pair of enter keys, and elongate shift and space bars located around the perimeter of the key arrangement. Each letter of the alphabet is represented by an individidual key and the alphabetic keys are arranged in alphabetical order in nine rows with three keys per row so as to facilitate human information processing. Specifically, the keys of the first row are arranged, sinistrally, as c-b-a or, dextrally, as a-b-c, the second row f-e-d or d-e-f, and so on, with the pattern continuing to the ninth row which contains the keys "z-y" or "y-z.
Abstract: A printing apparatus includes a power supply for supplying power thereto and a battery supply for supplying back-up battery power. A printing mechanism effects printing on a printing paper in accordance with one of a plurality of printing pitches, and a processor controls the printer and produces data signals. A selector selects one of a plurality of printing pitches and applies a signal indicating the selected printing pitch to the processor. A plurality of indicators each indicates a respective one of the plurality of printing pitches and one of the indicators is energized by a data signal produced by the processor. A memory is supplied with back-up battery power by the battery power supply and stores a selected one of the plurality of printing pitches. The memory is accessed by the processor.
Abstract: An ink ribbon feeding mechanism includes a rotatably supported capstan roller which is fixed in position and a rotatably supported pinch roller which is movable with respect to the capstan roller and normally biased toward the capstan roller to be pressed thereagainst with ink ribbon to be fed as being sandwiched therebetween. In the present invention, there is provided a structure which allows to keep the pinch roller separated away from the capstan roller when desired. In the preferred embodiment, it is so structured that the pinch roller is brought into contact with the capstan roller under pressure when a top cover is pivoted closed and brought out of contact with the capstan roller when the top cover is pivoted open, automatically.
Abstract: A printer having a print ribbon feed mechanism is disclosed which allows optimal feeding of a print ribbon, eliminating unnecessary consumption of the ribbon. The mechanism includes first and second clamp means mounted on a stationary section and a print carrier of the machine, respectively, which are both controlled in accordance with movement of a print head from and to a print enabling position. Means are provided which are connected to a carrier indexing mechanism for impositively driving print ribbon supply and takeup spools disposed on the stationary section to wind a print ribbon onto them during a carrier return operation whereas they allow the ribbon to be unwound from the ribbon spools when the carrier advances.
Abstract: The invention concerns a mechanism for raising and feeding different types of ink ribbons in typewriters and similar machines. With a simple design and using only one motor under programmed control, the mechanism is capable of utilizing ink ribbons economically, e.g. printing alternately in several printing zones of a ribbon or in several colors. It also feeds ribbon by a length which corresponds to the type of ribbon, or type of operation, e.g. proportional typing. The starting point for the various functions is a basic position to which the mechanism is positioned by the motor.
Abstract: A printing ribbon cassette having in a casing a supply spool carrying a printing ribbon thereon and a take-up spool on which the ribbon is wound as it is released from the supply spool having an axis of rotation which is movable as the ribbon is released therefrom. A ribbon tensioner in the casing has a base rotatably supported on a supply spool shaft, and one end engaged with the ribbon released from the supply spool, while the other end of the tensioner is engaged with a guide member in the casing. The outer end of the tensioner is movable along the guide member with the displacement of the supply spool shaft to enable one end of the tensioner to maintain a constant range of tension on the ribbon.
Abstract: A hand-held printing calculator for printing calculating results on elongated paper strips from a bundle of paper strips disposed within the calculator is provided. The calculator includes a microprinter having a paper feeding assembly including feeding elements disposed before and after the print position and in the same plane as the advancing paper for maintaining the paper flat during printing. In another embodiment of the invention, a detection sensor detects the absence of a paper strip at the print position for generating a signal for feeding the next paper strip so that paper is continuously fed to the print position.
Abstract: A method of and apparatus for proportional ribbon (23) tracking on a printer (20), the printer (20) including a carrier (30) upon which implements of printing, for example the printwheel (25), ribbon (23) and hammer (28) are all mounted for translation opposite a platen (21). Ribbon lift mechanism is provided for effecting elevation of a ribbon (23) to multiple predetermined positions or tracks (1-10) (FIG. 3B) intermediate a printwheel (25) and a platen (21) so that indicia or character may be printed on print receiving medium (22) held thereby. In essence, an input means (11) receives a character to be printed. The microprocessor (13), in conjunction with the ROM (15), characterizes the character in accordance with a predetermined plurality of characteristics. In accordance with ribbon lift and feed algorithms, a particular characteristic of the character to be printed is added to a position on the ribbon upon which at least one prior character has been printed.
May 7, 1984
Date of Patent:
August 19, 1986
International Business Machines Corporation
Charles S. Aldrich, James R. Booth, William M. Schuller, Lloyd P. Young
Abstract: A print ribbon cassette of a simplified construction which can prevent slackening of a print ribbon and normally keep the print ribbon in taut condition for printing. The print ribbon cassette comprises a lock member having a locking position for preventing inadvertent rotation of a feed spool on which a print ribbon to be supplied is wound. The cassette further comprises a ribbon lock control member which is moved between an operative position and an inoperative position in response to a tensile force of a print ribbon applied thereto. In the operative position of the ribbon lock control member, it engages with the lock member and holds the same to the lock position.
Abstract: An ink projecting medium, such as a typewriter ribbon, having a carrier, with an array of spots each including an ink or other colorant and a vapor producing material, wherein the vapor producing material amplifies applied energy by chemical reaction to propel the ink from the carrier toward a receiving surface such as paper. In one embodiment, the ink and lead azide are provided in small, conical apertures in a polyethylene terepthalate carrier film and the lead azide is selectively detonated electrically to cause printing.
Abstract: A keyboard is disclosed for an ideographic language, in particular for Japanese. The disclosed keyboard includes the positioning of up to eight similar descriptors on a single key. Combination of the descriptors to form compound or complex ideograms is accomplished by actuating two or more keys in the usual order of "writing" a Japanese character.
July 20, 1983
Date of Patent:
July 29, 1986
Mark Merner, Douglass A. White, Kanemichi Takeuchi
Abstract: A paper feeding mechanism having a platen is driven by power from a drive source and clamps a recording paper sheet with paper holding rollers and pinch rollers so as to feed the recording paper sheet along the paper guide. When the recording paper sheet is loaded, a lever serves to separate the paper holding rollers from the platen. When a microswitch detects the operation of the lever, the platen is automatically rotated by a predetermined amount.
Abstract: An ink ribbon cassette for a printer includes a ribbon storage chamber in which an endless ink ribbon is stored. The ribbon has a portion lying outside the chamber, and is movable out of and into the chamber by a feed roller. A roller is provided in the vicinity of the ribbon outlet of the chamber. A spring is provided adjacent to the chamber for holding the ribbon against the roller to impart tension to the outwardly lying ribbon portion. A lever contacts the spring, and is rotatable to deform the spring so that the spring may hold the ribbon against the roller with an increased force.
Abstract: In a printer adapted to receive any of a plurality of petal-type printing thimbles, each of the printing thimbles is provided with a recognition code-forming portion containing a plurality of protuberance-forming positions, the arrangement of protuberances at the protuberance-forming positions defining a thimble recognition code which identifies specific character position, hammer impression, and character spacing tables. These tables identify the character positions, hammer impression forces and character spacings required to print characters designated by character codes when the recognition code identified printing thimble is mounted on the printer. A mechanical means, mounted on the printing hammer cover of the printer carrier unit, detects the presence or absence of protuberances at the protuberance-forming positions of the code forming portion on the printing thimble, to generate a binary recognition code received by the printer processor.
Abstract: In an electronic correcting typewriter, a character correction and replacement system is disclosed for facilitating the task of correcting typed character errors. The typewriter includes a printing and a correcting mechanism operated under electronic control and a correction buffer is associated with the electronic control for storing the last plurality of printed characters. To automatically erase any previously printed character which character has its code stored in the correction buffer and print a new replacement character, the typist locates the carrier opposite the unwanted character and actuates the character key of the desired replacement character. Under control of the electronics, the unwanted character code is recalled from the correction buffer, the correcting mechanism is operated to erase that character and the printing mechanism is operated to print the new character. Operator setting of an overstrike flag provides character overprint capability.
Abstract: Electronic equipment such as an electronic typewriter has memory means for storing character information. When the character information in the memory means is to be corrected, the character information is rearranged within the memory means and then a portion of the character information which requires correction is corrected. Directory fields for the character information are of variable length. When more than a predetermined number of specific characters are present in the character information, a next sequence of characters of the character information is automatically tranferred to a display without requiring keying operation. A specific code is added to each paragraph of the character information to facilitate reference paragraph by paragraph.
Abstract: The typing arrangement includes a character-bearing member of the "daisy wheel" type, the symbols of which can be printed at the point of printing either alone or in the form of combinations of successive strikes of certain symbols for constituting a font of printable characters and other symbols which is appreciably greater than the number of symbols on the daisy wheel, and adapted to meet the printing requirements of all the graphical symbols derived from one common alphabetical stem. Each printable character has an individual code which is recognizable by the control circuits of the arrangement which put into operation one or several printing cycles using selection of the symbol or of the symbols on the daisy wheel which make up the character and the displacements of the daisy wheel associated with the printing of the various component symbols.
May 20, 1985
Date of Patent:
April 8, 1986
Ing. C. Olivetti & C., S.p.A.
Arturo Rolfo, Mario Figini, Michele Monasterolo, Francesco Mascaro