US3910396A - Business machine printer having plural print heads - Google Patents
Business machine printer having plural print heads Download PDFInfo
- Publication number
- US3910396A US3910396A US461606A US46160674A US3910396A US 3910396 A US3910396 A US 3910396A US 461606 A US461606 A US 461606A US 46160674 A US46160674 A US 46160674A US 3910396 A US3910396 A US 3910396A
- Authority
- US
- United States
- Prior art keywords
- carriage
- ribbon
- print heads
- printing
- platens
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/22—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of impact or pressure on a printing material or impression-transfer material
- B41J2/23—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of impact or pressure on a printing material or impression-transfer material using print wires
- B41J2/235—Print head assemblies
- B41J2/24—Print head assemblies serial printer type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J19/00—Character- or line-spacing mechanisms
- B41J19/18—Character-spacing or back-spacing mechanisms; Carriage return or release devices therefor
- B41J19/68—Carriage-return mechanisms, e.g. manually actuated
- B41J19/70—Carriage-return mechanisms, e.g. manually actuated power driven
- B41J19/72—Carriage-return mechanisms, e.g. manually actuated power driven with power stored during character spacing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
- B41J3/54—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed with two or more sets of type or printing elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J33/00—Apparatus or arrangements for feeding ink ribbons or like character-size impression-transfer material
- B41J33/02—Ribbon arrangements
- B41J33/10—Arrangements of endless ribbons
Definitions
- a high speed serial printer for business machines preferably comprises a plurality of platens each for backing an associated record receiving medium, a continuous Mobius loop inking ribbon, a carriage movable relative to the platens, and a plurality of print heads mounted on the carriage, each print head having a set of selectively movable printing elements cooperable with the inking ribbon to impactingly print on the medium associated with one of the platens.
- the print heads are mounted back to back on the carriage in opposing spatial relationship, the print heads being offset with respect to each other and the carriage so that each print head impactingly engages the Mobius loop ribbon along each of two parallel printing paths
- PLURAL PRINT HEADS Inventors: Albert L. Eischen, Arlington Heights; George Kolomayets, Chicago, both of I11.
- This invention relates in general to high speed serial printers for business machines, and, more particularly, to a novel serial printer having a plurality of print heads for simultaneously printing on separated record receiving media.
- High speed serial printers have been developed to employ a plurality of printing elements or wires in a print head movable translationally and continuously relative to the impression-receiving paper or record receiving medium the wires are selectively moved longitudinally to effect dot impressions on the paper in cooperation with an inking means, preferably an interposed ribbon, to complete a line of printing, with the print head then being returned to a home or rest position, the paper fed to receive a succeeding line of printing, and the ribbon fed to present another portion in active inking position. See, for example, the printers disclosed in US. Pat. Nos. 3,703,949 and 3,758,012.
- printers for several record receiving media, such an itemized customer receipt, a tally roll or journal stored in the machine for recording essential audit information for all transactions, and a document or slip which may be manually inserted into the side of the machine to receive transaction data.
- the business machine printer of the present invention provides an inexpensive solution to this problem, and comprises a plurality of high speed serial print heads mounted on a single reciprocably movable carriage, with drive means for moving the carriage relative to a plurality of platens each for backing an associated record receiving medium.
- the details of such a print head are disclosed in co-pending application for US Pat. Serv No. 313,248, filed Dec. 8, 1972.
- a solenoid for longitudinally actuating a printing wire or element in such a print head is disclosed in US. Pat. Ser. No. 3,787,791.
- the use of a single carriage and drive means for plural print heads effects substantial cost and space savings.
- the preferred embodiment of the present invention in a cash register contains two such print heads, one print head being operable to print validation or endorsement information on manually insertable documents, the other print head being operable to print both customer receipts and on the tally roll in the same printing plane, both print heads moving simultaneously through a printing excursion.
- the present invention further includes an inking means.
- an inking means which may comprise a relatively long endless loop ribbon wound on a storage reel without the use of a known re-inking device, which is generally unsatisfac' tory in operation.
- the length of the ribbon insures sufficient time for replenishment of exhausted ink supply by capillary action.
- the loop ribbon may include a Mobius twist operable to interchange the surfaces of the ribbon, whereby a print head impactingly engages alternate sides of the ribbon.
- a printer for customer receipts and a tally roll will be used more frequently than a printer for manually insertable documents; in some business machines, the latter document printer may be omitted entirely.
- the print heads being two in number, are offset with respect to each other and the carriage, whereby each of the print heads engages the Mobius loop ribbon along each of two parallel printing paths thereon, the interchange of printing paths being effected by the Mobius twist, in order to effect substantially even ribbon wear and best inking characteristics regardless of the relative print head usage.
- the Mobius twist increases ribbon fabric life and minimizes ribbon waste and the effects of curling the ribbon by alternately reversing the side of the ribbon in contact with each printing head.
- the business machine printer of the present invention includes ribbon transport or feed means for cyclically unwinding the ribbon from its storage reel, advancing the unwound portion.
- the feed means preferably comprises capstan means, stationary belt means having a loop therein frictionally and circumferentially engaging the capstan means for bidirectionally rotating the latter in accordance with movement of the carriage to and from its rest position, a one-way clutch means driven by the capstan means, and pressure roller means engaging the unwound portionof the ribbon, the pressure roller means being unidirectionally driven by the clutch means to advance the ribbon only when the carriage is moved from its rest position through a printing excursion.
- substantially even ribbon wear results from advancement of the ribbon in direct proportion to the movement of the carriage through its printing excursion, unlike ribbon advancement during both directions of carriage travel as disclosed inthe previously mentioned US Pat. No. 3,758,012.
- the present invention includes means for effecting two-stage return deceleration of the carriage toward its rest position.
- the business machine printer comprises spring means for urging the carriage toward a rest position, electrically energized drive means operable to move the carriage from its rest position through a printing excursion in opposition to the spring means, stationary strobe strip means, optical sensing means movable with the carriage for engagement with the strobe strip means, and proximity switch means closingly engaged by the carriage prior to return of the latter to its rest position, and electrical control means for controlling the energization of the drive means, the optical sensing means being operable to actuate the electrical control means to energize the drive means for decelerating the carriage when the return speed of the latter exceeds a first predetermined value, the proximity switch being operable to actuate the electrical control means to energize the drive means to decelerate the carriage to a second predetermined return speed just prior to the return thereof to its rest position.
- the first mentioned return speed through the major portion of its return travel is preferably higher than the second return or impact speed.
- the carriage is decelerated by electrically con trolled operation of the drive means in order to insure that its return speeds are at audibly and structurally acceptable levels, while its total return travel time is minimized in order to maximize printer efficiency.
- FIG. 1 is a top plan view which illustrates the basic features of the preferred embodiment of the business machine printer of the present invention, with parts broken away and with the ribbon storage reel removed;
- FIG. 2 is a front elevational view showing the ribbon storage reel and the mounting of the print heads on the carriage illustrated in FIG. 1;
- FIG. 3 is a vertical sectional view taken substantially along the line 3-3 of FIG. 2, with the ribbon removed;
- FIG. 4 is a view similar to FIG. 3, with parts broken away and parts in vertical section, showing mounting details of the print heads;
- FIG. 5 is a plan view illustrating the details of the mobius loop ribbon storage reel, taken substantially along the line 5-5 of FIG. 2, with parts broken away and parts in horizontal section;
- FIG. 6 is a perspective view of a simplified Mobius loop which illustrates its operation in interchanging printing paths on the sides thereof.
- the preferred embodiment of the business machine printer of the present invention includes a substantially vertical carriage 11 or other suitable transport means, preferably a steel plate, and a plurality of print heads preferably comprising an upper print head 12 and a lower print head 13, both securely mounted to the carriage in vertically opposing spatial relationship.
- the print heads 12,13 in the preferred embodiment are the same as that disclosed in co-pending application for U.S. Pat. Ser. No. 313,248, filed Dec. 8, 1972, and each incorporates a plurality of wires or printing elements, preferably seven, each element printingly operable longitudinally by a solenoid 14 like that comprising the subject matter of U.S. Pat. Ser. No. 3,787,791.
- the present invention further includes a plurality of platens each for backing an associated record receiving medium.
- the preferred embodiment includes an upper cylindrical platen l6 operable to print a customer receipt 17 and a tally roll or journal 18, respectively, in the same horizontal printing plane, the transport means for these media being omitted for simplification.
- a lower flat platen 19 is provided for backing an optional manually insertablc document 21.
- the printer includes an inking means preferably comprising an endless loop ribbon 22 (FIG. 2) and drive means for reciprocably moving the carriage 11 from a left at rest or home position (shown in FIG. 1) through, a rightward printing excursion horizontally relative to the stationary upper platen 16 and the lower platen 19.
- the print heads 12,, 13 have sets of selectively longitudinally movable printing elements cooperable with the inking means or ribbon 22 to impactingly print on associated record receiving media.
- the upper print head 12 sequentially impactingly prints on the customer receipt l7 and the tally roll 18, while the lower print head 13 prints validation and endorsement data on the optionally insertable document 21.
- a horizontal traverse rod or support rail 27 is provided for sliding engage- I ment with the bearings, the rod being rigidly horizontally supportedin a known manner.
- the rod 27 is operable to guide and support the carriage 11 as it moves from its left rest position printingly rightward, the wire springs 25 serving to resiliently retain the bearings 24 into their associated recesses to, enable accurate printing alignment of the carriage by the rod, the movable bearings being preferred to the use of accurately aligned bearings rigidly secured to the carriage.
- a yoke 28 (FIG. 1) having a cylindrical anchor portion 29 at the .end thereof rigidly secured to theend of an extension spring 31, and also to the end of an elongate flexible band 32 by suitable known connecting means (not shown).
- the other end of the spring 31 is secured to a portion of the printer frame 33 by means of a hook 34, the spring being looped around a pulley 35 which is horizontally rotatable about a pivot 36.
- the other end of the flexible band 32 is connected to a take up reel 37 similar to that disclosed in U.S. Pat. No. 3,861,510, issued on Jan. 21, 1975, which discloses a novelpower drive and timing train mechanism for serial printers, the disclosure of which is incorporated by reference herein.
- the extension spring 31 urges the carriage toward its left rest or home position against a bumper (not shown), electrically energized drive means being operable to move the carriage 11 from its rest position printingly rightward in opposition to the spring.
- the take up reel 37 is mounted on a shaft 38 supported by plastic bearings 39.
- An electrically energized magnetic clutch 41 similar to that disclosed in U.S. Pat.'No. 3,854,562, issued on Dec.
- the print heads l2, 13, preferably identical to minimize manufacturing costs. are rigidly interlocked and mounted in opposing spatial relationship and back to back on the carriage, the print heads being offset with respect to each other and the carriage.
- the print heads I2, 13 are rigidly secured to the carriage II by means of bolts 48 inserted into horizontal recesses 49 in each of the print heads l2, 13, the bolts being secured by associated nuts 51.
- the upper print head 12 comprises two vertical integral flange portions 52 and a metal support plate 53, which are secured to two horizontal studs 54 rigidly attached to the carriage 11, the studs being suitably apertured at their ends engaging flanges 52 for receiving tapered plastic pins 55 or other suitable connectors (FIG. 2).
- the ribbon 22, shown by dashed lines, is shown overlying the foregoing upper mounting details to illustrate the location of the ribbon relative to the upper print head 12 and its selectively movable printing elements 56.
- the carriage 11 comprises an integral horizontal portion 57 and an integral vertical bracket 58 connected to integral flanges 59 of the lower print head 13 and a metal support plate 61 associated therewith, by means of plastic connectors 62.
- the business machine printer of the present invention further comprises rotatable storage reel means 63 (FIGS. 2 and 5) mounted on the carriage 11 for windingly storing the major portion of the endless loop ribbon 22.
- rotatable storage reel means 63 FIGS. 2 and 5
- FIG. 1 which illustrates the printer with the reel 63 removed
- attached to the carriage II is a support 64 for a shaft 65 for receiving the reel 63.
- Guide means are provided for guiding the unwound portion of the ribbon 22 between the print heads 12, 13 and the platens associated therewith.
- Two horizontal guide posts 66 are integrally formed with the upper print head 12, with similar guide posts 67 being integrally formed with the lower print head 13 (FIGS. 1, 2, 3 and 4).
- ribbon guides 68 are attached to the carriage 11.
- a U-shaped metal guide bracket 69 (FIGS. 2 and 3) includes two metal ribbon guide posts 71, the bracket being secured to the guide posts 67 of the lower print head 13 by means of screws 72 received by suitable apertures therein.
- the printer of the present invention further comprises ribbon spacing or feed means for cyclically unwinding the ribbon 22 from the storage reel 63, advancing or transporting the unwound portion past the previously mentioned guide means, and rewinding the ribbon onto the storage reel.
- the feed means includes a capstan means 73 ro- I tatably fastened to the carriage I1, and stationary belt means preferably comprising a cord 74 having a single loop 75 therein frictionally and circumferentially engaging the roller of the capstan means for bidirectional rotation thereof in accordance with movement of the carriage 11 both to and from its rest position, the belt being rigidly secured to stationary sections ,76, 77 of the printer frame at each end of the belt.
- the feed means further comprises a one-way sprag clutch means (not shown) internal to the capstan means 73 and driven thereby, and pressure roller means comprising a horizontal lower polyurethane roller 78 (FIGS. 2 and 3) unidirectionally driven counterclockwise, as viewed in FIG.
- a pressure roller bracket 81 is rotatably mounted on a shaft 82 extending forwardly from carriage 11 (FIG. 2) for urging a horizontal upper polyurethane roller 83 rotatably supported by the bracket and also having teeth therein, into engagement with roller 78 by means of a torsion spring 84 on'shaft 82 having its ends respectively engaging the bracket 81 and a pin 85 on the carriage.
- the ribbon 11 is approximately sixty feet long and is oriented into a Mobius loop by twisting one end 180 relative to the other and ultrasonically welding its ends, after winding the major portion thereof onto the spool or reel 63.
- the Mobius twist is operable to interchange the surfaces of the ribbon.
- the upper and lower print heads 12 and 13 are offset with respect to each other and the carriage 11, the upper print head 12 engaging the ribbon 22 along a rear printing path closer to the carriage 11 than the front printing path of the lower print head 13 (as best seen in FIGS. 1 and 3), the Mobius twist interchanges the printing paths, whereby each of the print heads engages the Mobius loop ribbon along eachof two parallel printing paths.
- the reel comprises front and rear circular plates 86 and 87, respectively, joined by a hub 88 having a V-shaped peripheral surface to enable unwinding of the ribbon 22 from the inside of the portion thereof wound on the reel.
- the ribbon 22 is thus positioned in a vertical plane as it is unwound from the storage reel 63, but is then twisted 90 degrees in being pulled over guide posts 66 to present a horizontal printing surface at the upper print head 12.
- FIG. 6 illustrates the operation of a Mobius loop in interchanging the ribbon printing surfaces and printing paths thereon.
- Shown in that figure is a simplified single turn Mobius strip or loop, designated by reference numeral 89, which is similar to that of the ribbon 22, with the exception that the major portion of the ribbon 22 is wound around the storage reel 63.
- the loop will be rotated counterclockwise by the feed means such that the next time that the same segment of the ribbon is presented to the upper print head, the latter will then engage another portion 92 (shown by a solid line) along an originally rear printing path.
- the sides of the loop 89 will be interchanged, thereby causing the upper print head 12 to engage the loop along a portion 94 (shown by dashed lines) of a front printing path, and finally a portion 95 (shown by a solid line) on the front printing path on the side opposite to that which the upper print head initially engaged.
- Another complete rotation of the ribbon 89 will cause the same to be presented to the upper print head 12 in its original starting position along the rear path after printing along portions or segments 96 and 97. It is apparent that the upper print head 12 engages the ribbon 89 along each of two (front and rear) parallel printing paths thereon.
- each print head impactingly engages alternate sides of the ribbon, and prints along each of two parallel printing paths, in order to effect substantially even ribbon wear and the best ribbon inking characteristics regardless of the relative usage of the print heads 12 and 13.
- the present invention further comprises means for effecting two-stage return deceleration of the springurged carriage 11 toward its rest position upon completion of its printing excursion.
- a stationary horizontal elongated strobe strip 98 having narrow vertical'transparent slits therein is mounted for engagement with optical sensing means, generally illustrated by reference numeral 99 (FIGS. 3 and 4), movable with the carriage.
- the optical sensing means assembly 99 comprises a plastic vertical arm 100 (PEG. 3) mounted on the carriage plate 11 to retain a lightemitting diode (LED) the latter being energized from a power source (not shown) through conductors 102, and a light sensor 103 attached to the LED by means of a horizontal arm.
- PEG. 3 plastic vertical arm 100
- LED lightemitting diode
- the optical sensing means assembly 99 is preferably mounted on the upper print head 12 to engage an integral horizontal guide 304 (FIGS. 1, 2, 3 and 4), the light sensor 103 being fitted into a recess in the print head and shielded by integral vertical side panels 105.
- the sensor 103 is connected by means of conductors E06 (FIGS. ll, 3 and i) to the electrical control circuit 45 (FlG. ll).
- the optical sensing means 99 monitors the return rate of speed of the carriage by measuring the frequency of light pulses from the LED 1011 through the strobe strip 98 to the sensor 103 in a known mannenthe electrical control circuit 45 being operable to automatically energize the electromagnetic clutch 41 through conductors 46 as required, in order to provide a forward or rightward carriage braking force through the band 32, the take up reel 37 and the shaft 38, in order to decelerate the carriage when the return speed of the latter exceeds a first predetermined value, preferably on the order of inches per second, which represents an audibly and structurally acceptable return velocity for the major portion of the carriage return travel.
- the carriage lli comprises ana integral arm portion 107 operable to closingly engage (as shown in that figure) a judiciously positioned known proximity switch 108, mounted on a portion of the frame 109, just prior to return of the carriage to its rest position.
- the proximity switch 108 is connected to,
- the electrical control circuit 45 by means of conductors 1 1 for actuating the control circuit to energize the drive b means as required to decelerate the carriage to a second predetermined return speed, preferably on the order of 10 inches, per second, just prior to the return of the carriage to its rest possition, in order to effect a safe impact of the carriage against the bumper (not shown).
- a business machine printer comprising: a pair of platens comprising upper and lower vertically separated horizontal printing surfaces for backing associated record receiving media, inking means, a carriage, drive means for moving said carriage horizontally relative to said platens, and a pair of vertically opposing print heads mounted in back-to-back relationship on said carriage, each of said print heads having a set of selectively movable printing elements cooperable with said inking means to impactingly print on the medium associated with one of said platens.
- said inking means comprises an endless loop ribbon, and rotatable storage reel means mounted on said carriage for windingly storing the major portion of said ribbon, guide means for guiding the unwound portion of said ribbon between each said print head and the platen associated there with, and feed means for cyclically unwinding said ribbon from said storage reel, advancing said unwound portion past said guide means, and rewinding said ribbon onto said storage reel, and spring means for urging said carriage toward a rest position, said drive means being operable to move said carriage from said rest position through a printing excursion in opposition to said spring means, and wherein said feed means comprises capstan means, stationary belt means having a loop therein frictionally and circumferentially engaging said capstan means for bidirectionally rotating the latter in accordance with movement of said carriage to and from said rest position, one-way clutch means driven by said capstan means, and pressure roller means engaging said unwound portion of said ribbon, said pressure roller means being unidirectionally driven by said clutch means to advance said
- a business machine printer comprising: a pair of platens comprising upper and lower vertically separated horizontal printing surfaces for backing associated record receiving media, inking means comprising an endless Mobius loop ribbon, a carriage, drive means for moving said carriage horizontally relative to said platens, and a pair of vertically opposing print heads mounted in back-to-back relationship on said carriage, each of said print heads having a set of selectively movable printing elements cooperable with said inking means to impactingly print on the medium associated with one of said platens, whereby opposite edge portions of said ribbon are simultaneously presented, respectively, to said print heads and each of said print heads impactingly engages said ribbon along each of two parallel paths thereon.
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- Impression-Transfer Materials And Handling Thereof (AREA)
- Printers Characterized By Their Purpose (AREA)
- Impact Printers (AREA)
Abstract
Description
Claims (5)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US461606A US3910396A (en) | 1974-04-17 | 1974-04-17 | Business machine printer having plural print heads |
CA216,046A CA1016401A (en) | 1974-04-17 | 1974-12-16 | Business machine printer |
DE19752502076 DE2502076A1 (en) | 1974-04-17 | 1975-01-20 | PRINTING DEVICE FOR OFFICE MACHINES |
SE7501402A SE7501402L (en) | 1974-04-17 | 1975-02-07 | PRINTING APPARATUS FOR OFFICE MACHINES AND THE LIKE. |
JP50044896A JPS50138922A (en) | 1974-04-17 | 1975-04-15 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US461606A US3910396A (en) | 1974-04-17 | 1974-04-17 | Business machine printer having plural print heads |
Publications (1)
Publication Number | Publication Date |
---|---|
US3910396A true US3910396A (en) | 1975-10-07 |
Family
ID=23833252
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US461606A Expired - Lifetime US3910396A (en) | 1974-04-17 | 1974-04-17 | Business machine printer having plural print heads |
Country Status (5)
Country | Link |
---|---|
US (1) | US3910396A (en) |
JP (1) | JPS50138922A (en) |
CA (1) | CA1016401A (en) |
DE (1) | DE2502076A1 (en) |
SE (1) | SE7501402L (en) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4062436A (en) * | 1976-04-16 | 1977-12-13 | Lrc, Inc. | Matrix head calculator printer |
US4167345A (en) * | 1976-08-11 | 1979-09-11 | Svenska Kassaregister Ab | Printing apparatus with selectively movable printing heads |
DE2823153A1 (en) * | 1978-05-26 | 1979-11-29 | Kienzle Apparate Gmbh | PRINTING DEVICE WITH A MOVABLE PRINT HEAD |
US4213715A (en) * | 1977-04-18 | 1980-07-22 | Nixdorf Computer Ag | Ink ribbon cartridge having a replaceable ribbon magazine |
US4231290A (en) * | 1978-10-30 | 1980-11-04 | Norwood Marking & Equipment Co. | Multiple head marking device |
US4303345A (en) * | 1979-06-20 | 1981-12-01 | Sycor, Inc. | Ink ribbon drive for data printers |
US4415282A (en) * | 1982-01-21 | 1983-11-15 | Pako Corporation | Slide mount data printer |
EP0127145A1 (en) * | 1983-05-26 | 1984-12-05 | Litton Systems, Inc | Dual head, three station printer |
US4634304A (en) * | 1983-09-12 | 1987-01-06 | Tokyo Electric Co., Ltd. | Printer |
US4733981A (en) * | 1985-08-08 | 1988-03-29 | Alps Electric Co., Ltd. | Motor control system of printer |
US20060181570A1 (en) * | 2005-02-15 | 2006-08-17 | Grosse Jason C | Uniquely spaced markings |
US20080024540A1 (en) * | 2006-07-27 | 2008-01-31 | Grosse Jason C | Carriage positioning |
US9266420B2 (en) | 2011-11-04 | 2016-02-23 | Robert Bosch Gmbh | Hydrostatic drive |
Citations (9)
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US681036A (en) * | 1901-01-18 | 1901-08-20 | Hubert Burg | Type-writing machine. |
US2399788A (en) * | 1944-10-19 | 1946-05-07 | Colombo Achille | Typewriting machine |
US3578129A (en) * | 1967-08-30 | 1971-05-11 | Mitsubishi Electric Corp | Control device for positioning carriages of business machines |
US3621968A (en) * | 1969-07-15 | 1971-11-23 | Burroughs Corp | Ribbon cartridge with mobius loop in ribbon |
US3643777A (en) * | 1970-07-23 | 1972-02-22 | Scm Corp | Typewriter ribbon cartridge |
US3670861A (en) * | 1970-09-10 | 1972-06-20 | Extel Corp | Carriage drive for high speed printer |
US3821930A (en) * | 1971-05-12 | 1974-07-02 | Hobart Mfg Co | Printing apparatus |
US3825681A (en) * | 1973-01-05 | 1974-07-23 | Singer Co | Data terminal with dual three-station printing |
US3838250A (en) * | 1973-01-05 | 1974-09-24 | Singer Co | Control for a matrix printing assembly |
-
1974
- 1974-04-17 US US461606A patent/US3910396A/en not_active Expired - Lifetime
- 1974-12-16 CA CA216,046A patent/CA1016401A/en not_active Expired
-
1975
- 1975-01-20 DE DE19752502076 patent/DE2502076A1/en active Pending
- 1975-02-07 SE SE7501402A patent/SE7501402L/en unknown
- 1975-04-15 JP JP50044896A patent/JPS50138922A/ja active Pending
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
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US681036A (en) * | 1901-01-18 | 1901-08-20 | Hubert Burg | Type-writing machine. |
US2399788A (en) * | 1944-10-19 | 1946-05-07 | Colombo Achille | Typewriting machine |
US3578129A (en) * | 1967-08-30 | 1971-05-11 | Mitsubishi Electric Corp | Control device for positioning carriages of business machines |
US3621968A (en) * | 1969-07-15 | 1971-11-23 | Burroughs Corp | Ribbon cartridge with mobius loop in ribbon |
US3643777A (en) * | 1970-07-23 | 1972-02-22 | Scm Corp | Typewriter ribbon cartridge |
US3670861A (en) * | 1970-09-10 | 1972-06-20 | Extel Corp | Carriage drive for high speed printer |
US3821930A (en) * | 1971-05-12 | 1974-07-02 | Hobart Mfg Co | Printing apparatus |
US3825681A (en) * | 1973-01-05 | 1974-07-23 | Singer Co | Data terminal with dual three-station printing |
US3838250A (en) * | 1973-01-05 | 1974-09-24 | Singer Co | Control for a matrix printing assembly |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4062436A (en) * | 1976-04-16 | 1977-12-13 | Lrc, Inc. | Matrix head calculator printer |
US4167345A (en) * | 1976-08-11 | 1979-09-11 | Svenska Kassaregister Ab | Printing apparatus with selectively movable printing heads |
US4213715A (en) * | 1977-04-18 | 1980-07-22 | Nixdorf Computer Ag | Ink ribbon cartridge having a replaceable ribbon magazine |
DE2823153A1 (en) * | 1978-05-26 | 1979-11-29 | Kienzle Apparate Gmbh | PRINTING DEVICE WITH A MOVABLE PRINT HEAD |
US4231290A (en) * | 1978-10-30 | 1980-11-04 | Norwood Marking & Equipment Co. | Multiple head marking device |
US4303345A (en) * | 1979-06-20 | 1981-12-01 | Sycor, Inc. | Ink ribbon drive for data printers |
US4415282A (en) * | 1982-01-21 | 1983-11-15 | Pako Corporation | Slide mount data printer |
EP0127145A1 (en) * | 1983-05-26 | 1984-12-05 | Litton Systems, Inc | Dual head, three station printer |
US4634304A (en) * | 1983-09-12 | 1987-01-06 | Tokyo Electric Co., Ltd. | Printer |
US4733981A (en) * | 1985-08-08 | 1988-03-29 | Alps Electric Co., Ltd. | Motor control system of printer |
US20060181570A1 (en) * | 2005-02-15 | 2006-08-17 | Grosse Jason C | Uniquely spaced markings |
US7699435B2 (en) | 2005-02-15 | 2010-04-20 | Hewlett-Packard Development Company, L.P. | Uniquely spaced markings |
US20080024540A1 (en) * | 2006-07-27 | 2008-01-31 | Grosse Jason C | Carriage positioning |
US7654629B2 (en) | 2006-07-27 | 2010-02-02 | Hewlett-Packard Development Company, L.P. | Carriage positioning |
US9266420B2 (en) | 2011-11-04 | 2016-02-23 | Robert Bosch Gmbh | Hydrostatic drive |
Also Published As
Publication number | Publication date |
---|---|
DE2502076A1 (en) | 1975-11-06 |
SE7501402L (en) | 1975-10-20 |
JPS50138922A (en) | 1975-11-06 |
CA1016401A (en) | 1977-08-30 |
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