US3782520A - Resilient head assembly having resilient mount - Google Patents

Resilient head assembly having resilient mount Download PDF

Info

Publication number
US3782520A
US3782520A US00195558A US3782520DA US3782520A US 3782520 A US3782520 A US 3782520A US 00195558 A US00195558 A US 00195558A US 3782520D A US3782520D A US 3782520DA US 3782520 A US3782520 A US 3782520A
Authority
US
United States
Prior art keywords
print wires
guide means
tubular guide
print
wires
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
Application number
US00195558A
Other languages
English (en)
Inventor
R Howard
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Genicom Corp
Original Assignee
Centronics Data Computer Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Centronics Data Computer Corp filed Critical Centronics Data Computer Corp
Application granted granted Critical
Publication of US3782520A publication Critical patent/US3782520A/en
Assigned to FIRST NATIONAL BANK OF BOSTON, THE (AS AGENT) reassignment FIRST NATIONAL BANK OF BOSTON, THE (AS AGENT) SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CENTRONICS DATA COMPUTER CORP.
Assigned to GENICOM CORPORATION, A DE. CORP. reassignment GENICOM CORPORATION, A DE. CORP. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: CENTRONICS DATA COMPUTER CORP. BY CHANGE OF NAME CENTRONICS CORPORATION
Assigned to GENICOM CORPORATION, A DE. CORP. reassignment GENICOM CORPORATION, A DE. CORP. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: CENTRONICS DATA COMPUTER CORP.,
Assigned to CHEMICAL BANK, A NY BANKING CORP. reassignment CHEMICAL BANK, A NY BANKING CORP. SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: GENICOM CORPORATION, A CORP. OF DE.
Assigned to FIDELCOR BUSINESS CREDIT CORPORATION, A NY CORP. reassignment FIDELCOR BUSINESS CREDIT CORPORATION, A NY CORP. SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: GENICOM CORPORATION
Assigned to GENICOM CORPORATION, A DE CORP. reassignment GENICOM CORPORATION, A DE CORP. RELEASED BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: CHEMICAL BANK
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • B41J2/265—Guides for print wires

Definitions

  • ABSTRACT A printer head assembly for use in high speed printers of the dot-matrix type.
  • the assembly is comprised of a one-piece hollow die cast member having a rear wall for mounting a plurality of driving solenoids.
  • Reciprocally mounted print wires extend from each of their associated solenoids mounted at the rear wall through the hollow interior of the die cast member with their free ends mounted so as to be substantially flush with the front wall of the die castmemiber.
  • Hollow tubular guide means are provided within the interior of the die cast housing'to maintain an appropriate curvature for each of their associated print wires which extend therethrough.
  • a jewel bearing is provided at the forward end of each of the guide wires to provide a low friction jewel bearing for each of the print wires to prevent abrasive wear of the print wires.
  • a jewel bearing is provided at the front end of the die cast housing for arranging the forward end of each of the print wires substantially along an imaginary straight line in very closely spaced fashion.
  • At least one retaining plate is mounted within the die cast housing at a point intermediate the forward and rearward ends.
  • a plurality of apertures are provided in the mounting plate, each of which is adapted to receive one of said tubular guide means. The diameter of each of the openings in the mounting plate is substantially greater than the outer diameter of each of the tubular guides.
  • a suitable resilient material such as, for example, silicone rubber is affixed to one surface of the mounting plate so as to surround each of the guide tubes and to resiliently secure the guide wires to the mounting plate.
  • the resilient mounting affords a cushioning effect to attenuate and absorb any transverse motion imparted thereto during either the impactor return movement of the print wires so as to significantly increase the useful operating life.
  • a pair of such mounting plates having the aforesaid resilient mounting means for the guide tubes may be employed.
  • the present invention relates to printers and more particularly to a novel printer head assembly and driving means therefor for use with high speed printers of the dot-matrix type wherein resilient mounting means are employed to reduce and cushion movement of the print wires in a direction transverse to their normal direction of movement.
  • Wire matrix printers are well known in the prior art.
  • One of the earliest types of wire matrix printers is comprised of a plurality of wires arranged in matrix fashion (i.e. regular rows and columns) for making impact through a ribbon to a paper document whereby the wires are selectively energized to form characters, numerals or other symbols.
  • the earliest types of wire matrix printers were capable of printing either words or entire characters.
  • the next development in the art consisted of wire matrix printers having a plurality of wires arranged in a row by column fashion for printing individual characters, numbers or symbols. Selected ones of the print wires were driven against the paper document to form the desired character or symbol.
  • the print wires are then shifted one position to the right to print the next character, number or symbol whereby shifting occurs in an intermittent fashion. Since a large plurality of separate driving mechanisms must be provided f sas 9 thsiztintnir s. tfstszamn sifij sash drive mechanisms are required for a X7 dot matrix printer) the amount of mass which must be moved to perform printing is quite appreciable.
  • the shortcomings in the art resulted in the development of wire matrix printers in which only a single vertically aligned column to print wires are employed.
  • the print wires are selectively driven against the inked ribbon and paper document to form one of the five columns of the numher, character, or symbol.
  • the character upon wich the print wire assembly is mounted is then shifted one position to the right to print the next column. This operation continues until all five columns have been printed to ultimately form the character or other symbol.
  • the print wires undergo high speed movement in both the impact and return directions which cause the print wires to undergo abrupt movement in the direction transverse to the normal movement of the print wires resulting in undue wearing thereof.
  • the present invention is characterized by providing a high speed impact printer of the dot matrix type in which the printer head assembly, which is capable of high speed operation, is provided with resilient means for positioning and aligning the print wires whereby transverse movement of the print wires relative to the normal direction of movement is both attenuated and cushioned so as to significantly reduce the wearing of parts, thereby increasing the operating life thereof.
  • the present invention is comprised of a printer head assembly having solenoid driven print wires.
  • the entire printer head assembly, including the solenoid driver, is moved across the paper document, preferably at a constant rate of speed.
  • the arrangement of the printer head assembly is such as to provide a lightweight compact structure so as to minimize the mass which is moved across the paper document, enabling the structure to move at relatively high speeds.
  • the printer head assembly is comprised of a onepiece die cast housing having a rear wall for mounting each of the solenoids.
  • the lightweight high speed solenoid drivers are mounted through tapped apertures provided in the rear surface of the hosuing whereby the solenoid drivers are clustered together in a rather compact fashion.
  • Each of the solenoid drivers have their armatures mechanically coupled to an associated slender print wire.
  • the print wires are arranged to converge together at the forward end of the housing where they are preferably aligned along an imaginary straight line and arranged in very closely spaced fashion.
  • the jewel bearing mounted at the front face of the housing effectively provides low friction guiding means for the forward ends of the print wires, as well as significantly reducing any frictional engagement between the forward ends of the print wires and the inked ribbon which may otherwise occur even when the print wires are in their retracted position, due to the close spacing between the front face of the housing and the inked ribbon.
  • Each of the print wires are mounted for reciprocating movement within hollow tubular guide members extending between the forward and rearward faces of the die cast housing.
  • At least one mounting plate is provided within the hollow housing at a position intermediate the forward and rearward ends thereof.
  • the mounting plate is provided with a plurality of apertures, each being adapted to receive one of the hollow tubular guide means.
  • the forward ends of each of the tubular guide means are preferably provided with a jewel bearing for significantly reducing frictional engagement between the forward end of each of the tubular guide means and their associated reciprocating print wires.
  • Each of the openings provided in the mounting plate are of a diameter which is significantly greater than the outer diameter of the associated tubular guide means which it receives.
  • a resilient material such as, for example, silicone rubber is affixed to one surface of the mounting plate so as to surround all of the tubular guide means and resiliently secure same to the mounting plate.
  • the resilient material acts toboth attenuate and cushion movement of the print wires and hence the tubular guide means in a direction transverse to the normal reciprocating movement of the print wires so as to significantly reduce wearing of the components and thereby significantly increase the operating life thereof.
  • FIG. 1a is a top plan view showing a printer head assembly designed in accordance with the principles of the present invention.
  • FIG. lb shows an elevational view of the printer head assembly of FIG. 1a with portions thereof being sectionalized to facilitate an understanding thereof.
  • FIG. 2a shows a sectional view of the forward end of one of the tubular guide means of FIGS. la and 1b.
  • FIG. 3 shows a sectional view of one of the mounting plates of FIG. la looking in the direction of arrows AA.
  • FIGS. la and 1b show a printer head assembly comprised of a one-piece die-cast housing member 11 having a pair of flanges 12a and 12b which extend to the sides of the housing as well as extending below the housing and which are provided with openings 13 for receiving suitable fastening means to secure the housing 11 upon a movable carriage assembly (not shown for purposes of simplicity).
  • the rear end of member 11 is provided with an upwardly projecting wall 14 having a plurality of tapped openings 15 whose longitudinal axes are aligned so as to be substantially perpendicular to their associated exterior surfaces 14a, 14b, 14c and 14d, shown in FIGS. 1a and lb.
  • the openings are aligned so that their longitudinal axes intersect at a remote point, which point lies on an imaginary line which is preferably coincident with the central axis of opening 15'.
  • Each of the openings is tapped to threadedly engage a threaded collar 17 of a print solenoid 18.
  • Each of the solenoid assemblies is similarly provided with threaded collars for threadedly engaging an associated one of the tapped apertures 15 (or 15)
  • Each solenoid has a slender solenoid print wire 19 (or 19) connected to its movable armature (not shown, for purposes of simplicity) and projecting outwardly through an opening provided at the forward end of each threaded collar 17,
  • Die-cast member 11 is further provided with a rear mounting portion 20 comprised of inwardly directed projections 21 and 22 formed integrally with the side walls 1 1a and 1 lb, respectively.
  • Each of the projections is provided with a narrow slot 21a and 22a, respectively, for receiving a substantially thin planar sheet 23 provided with a plurality of openings, such adapted to receive a hollow tubular guide member 47.
  • Planar sheet 23 is inserted within the narrow slot 21a and 22a so that its bottom edge rests against the bottom surface 11c of the die-cast member 11..
  • An epoxy is provided at 25 to retain planar sheet 23 in position.
  • Die-cast member 11 is further provided with a forward mounting portion 27 comprised of first and second projections 28 and 29 extending inwardly from side walls 1 la and 1 lb and integrally formed therewith.
  • Each of the projections is provided with a narrow slot 28a and 29a respectively, for receiving a thin planar sheet 30 whose opposite marginal edges are fitted within slots 28a and 29a.
  • the bottom edge of sheet 30 rests against the base portion 11b of die-cast member 11 and is epoxied as shown at 31 to retain the sheet in position.
  • Sheet or plate 30 is similarly provided with a plurality of openings 24, each adapted to receive an associated one of said tubular guide means 47.
  • Print wires 19 extend forwardly from their associated solenoids so each of the print wires pass through the openings 24 in plates 23 and 30, with the forward free ends of the print wires additionally being mounted to reciprocate within a final jewel bearing assembly 34 which is positioned in very close proximity to the inked ribbon so as to minimize frictional engagement of the forward ends of the print wires with the inked ribbon and thereby prevent the wires from engaging the inked ribbon when in the retracted or reset position.
  • Each of the print wires 19 are mounted for reciprocal movement within hollow guide tubes 47, each of which extend between front wall lle and rear wall 14 of die-cast member 11.
  • the hollow tubular guides are secured within associated openings 24 provided in plates 23 and 30.
  • one such tube guide is provided for each print wire 19 (19').
  • Each of the tube guides are provided at their left-hand ends with a jewel bearing arrangement which may take the form of that shown in FIG. 2.
  • one end of tube guide 47 is provided with a central opening 47a.
  • the outermost interior portion of central opening 47a is drilled or otherwise machined so as to provide an enlarged diameter portion 47b.
  • a jewelbearing 24 is fitted within the enlarged diameter portion as shown, preferably in a pressfitted manner.
  • each of the hollow tubular guides is resiliently mounted to either plates 23, 30, or both.
  • FIG. 3 shows a sectional view of one such mounting.
  • Plate 23 is provided with an opening 24 whose diameter is substantially greater than the other diameter of tubular guide 47 which, in turn, reciprocally mounts slender print wire 19'.
  • the rearward surface of mounting plate 23 has applied thereto a suitable resilient material such as, for example, silicone rubber 48 which is adapted to surround and intimitely contact each of the tubular guides in the immediate region of the openings provided in plate 23.
  • a suitable resilient material such as, for example, silicone rubber 48 which is adapted to surround and intimitely contact each of the tubular guides in the immediate region of the openings provided in plate 23.
  • some of the resilient material enters into the hollow region defined by the interior surface of opening 24 and the exterior surface of tubular guide 47.
  • the resilient material acts to provide a resilient mounting for the tubular guides.
  • the print wires can be seen to be curved in the plane of both figures. Due to the extremely high speed operation of the print wires, which wires are rapidly accelerated in the forward direction (see arrow P of FIG. la) to impact the inked ribbon and paper document and are further rapidly accelerated in the rearward direction (see arrow R of FIG. 1a) to return to the reset position, the print wires undergo a whipping effect whereby the portions of the print wires may experience abrupt movement or whipping in a direction transverse to the direction of reciprocating movement.
  • the resilient material serves to both cushion and attenuate the guide tubes and hence the print wires so as to minimize movement thereof other than in the forward and rearward directions, thereby substantially reducing wearing of the print wires and their associated guide tubes to thereby yield an assembly which has an extremely long and useful operating life even after repeated high speed use.
  • resilient material which has been found satisfactory for this use is marketed under the trademark RTV. However, any other suitable resilient material may be employed. Alternatively, resilient grommet members 49 such as are shown in FIG. 3a may be employed for the-resilient mounting with equal success. However, the resilient silicone rubber or other materials similar thereto is found to be more desirable due to the simplified nature of its application;
  • both sides of plates 23 and 30 may be coated with resilient material, if desired.
  • the present invention provides novel resilient novel mounting means for use in high speed print assemblies of the dot-matrix type where lateral movement of the print wires is both attenuated and minimized so as to reduce wearing and increase the useful operating life thereof.
  • a printer head apparatus for use in printers of the dot matrix type comprising:
  • a housing having front and rear walls joined by a pair of side walls and a floor defining a hollow interior;
  • each of said solenoid driving means including a thin reciprocating print wire of uniform diameter over its length and extending through said housing rear wall with its forward free end extending through said hollow interior and terminating adjacent said front wall;
  • spacing means secured within said front wall for maintaining the free ends of said print wires in a predetermined alignment
  • a print wire positioning and guiding assembly mounted within said housing between said front and rear walls respectively for maintaining a plurality of said print wires in a curved configuration which extends between said front and rear walls, said assembly having a plurality of openings;
  • hollow tubular guide means each adapted to receive one of said print wires; each of said tubular guide means extending through an associated one of said openings; resilient means secured to said assembly and secured to and surrounding said tubular guide means in the region of said assembly for cushioning and attenuating transverse movement of the print wires and tubular guide means; the outer diameters of said tubular guide means being less than the di ameters of said openings to form an annular gap between each opening and its associated guide means whereby movement of the tubular guide means in a direction transverse to the reciprocating movement of said print wires is permitted; said resilient means filling said gaps; said resilient means being silicone rubber.

Landscapes

  • Impact Printers (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)
  • Sewing Machines And Sewing (AREA)
US00195558A 1971-11-04 1971-11-04 Resilient head assembly having resilient mount Expired - Lifetime US3782520A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US19555871A 1971-11-04 1971-11-04

Publications (1)

Publication Number Publication Date
US3782520A true US3782520A (en) 1974-01-01

Family

ID=22721868

Family Applications (1)

Application Number Title Priority Date Filing Date
US00195558A Expired - Lifetime US3782520A (en) 1971-11-04 1971-11-04 Resilient head assembly having resilient mount

Country Status (9)

Country Link
US (1) US3782520A (xx)
JP (1) JPS5222281B2 (xx)
BE (1) BE790981A (xx)
CA (1) CA964925A (xx)
CH (1) CH551872A (xx)
DE (1) DE2253470C3 (xx)
FR (1) FR2159992A5 (xx)
GB (1) GB1346755A (xx)
NL (1) NL156966B (xx)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3889793A (en) * 1972-06-15 1975-06-17 Honeywell Inf Systems Mosaic printing head
US3907092A (en) * 1973-07-12 1975-09-23 Bunker Ramo Matrix wire print head with free bending print wires
US4386860A (en) * 1981-03-13 1983-06-07 Data Card Corporation High speed label printer
US4832516A (en) * 1985-12-05 1989-05-23 Ncr Corporation Dot matrix print head
EP0768184A3 (en) * 1992-06-23 1997-05-14 Fujitsu Limited Wire-dot printing head

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4060161A (en) * 1977-01-11 1977-11-29 Ncr Corporation Vibration dampening means for printing mechanism

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2129065A (en) * 1937-07-06 1938-09-06 Joseph N Loop Apparatus for printing characters
US2674652A (en) * 1950-07-14 1954-04-06 Powers Samas Account Mach Ltd Method of and apparatus for defining characters on impression receiving material
US3108673A (en) * 1961-02-08 1963-10-29 Gourley H Green Printing head
US3322253A (en) * 1965-10-18 1967-05-30 Ibm Vibration control apparatus for a matrix printer
US3467232A (en) * 1967-08-31 1969-09-16 Burroughs Corp Dot printing apparatus
US3584575A (en) * 1968-11-12 1971-06-15 Johann Distl Mosaic printing head and device for producing the same
US3675172A (en) * 1971-05-17 1972-07-04 Decision Data Corp Damping apparatus for a linear actuator device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3333667A (en) * 1965-12-09 1967-08-01 Teletype Corp Flexible wire guide cable
US3426880A (en) * 1967-04-14 1969-02-11 Friden Inc Serial character matrix page printer

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2129065A (en) * 1937-07-06 1938-09-06 Joseph N Loop Apparatus for printing characters
US2674652A (en) * 1950-07-14 1954-04-06 Powers Samas Account Mach Ltd Method of and apparatus for defining characters on impression receiving material
US3108673A (en) * 1961-02-08 1963-10-29 Gourley H Green Printing head
US3322253A (en) * 1965-10-18 1967-05-30 Ibm Vibration control apparatus for a matrix printer
US3467232A (en) * 1967-08-31 1969-09-16 Burroughs Corp Dot printing apparatus
US3584575A (en) * 1968-11-12 1971-06-15 Johann Distl Mosaic printing head and device for producing the same
US3675172A (en) * 1971-05-17 1972-07-04 Decision Data Corp Damping apparatus for a linear actuator device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3889793A (en) * 1972-06-15 1975-06-17 Honeywell Inf Systems Mosaic printing head
US3907092A (en) * 1973-07-12 1975-09-23 Bunker Ramo Matrix wire print head with free bending print wires
US4386860A (en) * 1981-03-13 1983-06-07 Data Card Corporation High speed label printer
US4832516A (en) * 1985-12-05 1989-05-23 Ncr Corporation Dot matrix print head
EP0768184A3 (en) * 1992-06-23 1997-05-14 Fujitsu Limited Wire-dot printing head

Also Published As

Publication number Publication date
FR2159992A5 (xx) 1973-06-22
CH551872A (de) 1974-07-31
JPS4858727A (xx) 1973-08-17
BE790981A (fr) 1973-05-07
CA964925A (en) 1975-03-25
DE2253470A1 (de) 1973-05-10
DE2253470C3 (de) 1978-10-19
DE2253470B2 (de) 1978-02-16
NL156966B (nl) 1978-06-15
JPS5222281B2 (xx) 1977-06-16
GB1346755A (en) 1974-02-13
NL7214659A (xx) 1973-05-08

Similar Documents

Publication Publication Date Title
US3802543A (en) Jewel bearings for printer heads and the like
US3941051A (en) Printer system
JPS6213804Y2 (xx)
US3833105A (en) Printer head assembly
US3991871A (en) Print head and plastic bearings therefor
US3782520A (en) Resilient head assembly having resilient mount
US5975776A (en) Dot matrix print head with unitary armature assembly and method of operation thereof
US4285603A (en) Wire printing device
US3835975A (en) Printer head assembly
US4218149A (en) Wire printer
US3795298A (en) Wire matrix print head particularly for high speed printers
US4005770A (en) Printer
GB1565608A (en) Printing mechanism
US4365902A (en) Wire matrix print head
US3882986A (en) Jewel bearings for printer heads and the like
US3823667A (en) Force adjustment in impact printers
US4552469A (en) Ink dot printer
US4879947A (en) Printhead which minimizes stray magnetic flux
US4669898A (en) Dot matrix print head
US4768892A (en) Electromagnetic hammer actuator for impact printer
US4839621A (en) Electromagnetic actuator having improved dampening means
US3734013A (en) Multiple hammer magnetic pole piece block
US5213423A (en) Printer with impact dot head
JPS58163674A (ja) 印字ヘツド用ガイドプレ−ト
US20110164089A1 (en) Printing system and method

Legal Events

Date Code Title Description
AS Assignment

Owner name: FIRST NATIONAL BANK OF BOSTON, THE (AS AGENT), MAS

Free format text: SECURITY INTEREST;ASSIGNOR:CENTRONICS DATA COMPUTER CORP.;REEL/FRAME:003980/0280

Effective date: 19811119

Owner name: FIRST NATIONAL BANK OF BOSTON, THE (AS AGENT)

Free format text: SECURITY INTEREST;ASSIGNOR:CENTRONICS DATA COMPUTER CORP.;REEL/FRAME:003980/0280

Effective date: 19811119

AS Assignment

Owner name: GENICOM CORPORATION, A DE. CORP.,VIRGINIA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CENTRONICS DATA COMPUTER CORP. BY CHANGE OF NAME CENTRONICS CORPORATION;REEL/FRAME:004779/0557

Effective date: 19871028

Owner name: GENICOM CORPORATION, ONE GENICOM DRIVE, WAYNESBORO

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:CENTRONICS DATA COMPUTER CORP. BY CHANGE OF NAME CENTRONICS CORPORATION;REEL/FRAME:004779/0557

Effective date: 19871028

AS Assignment

Owner name: GENICOM CORPORATION, A DE. CORP., VIRGINIA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CENTRONICS DATA COMPUTER CORP.,;REEL/FRAME:004834/0870

Effective date: 19880126

Owner name: GENICOM CORPORATION, ONE GENICOM DRIVE, WAYNESBORO

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:CENTRONICS DATA COMPUTER CORP.,;REEL/FRAME:004834/0870

Effective date: 19880126

STCF Information on status: patent grant

Free format text: PATENTED FILE - (OLD CASE ADDED FOR FILE TRACKING PURPOSES)

AS Assignment

Owner name: CHEMICAL BANK, A NY BANKING CORP., NEW YORK

Free format text: SECURITY INTEREST;ASSIGNOR:GENICOM CORPORATION, A CORP. OF DE.;REEL/FRAME:005370/0360

Effective date: 19900427

AS Assignment

Owner name: GENICOM CORPORATION, GENICOM DRIVE, WAYNESBORO, VA

Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:CHEMICAL BANK;REEL/FRAME:005521/0662

Effective date: 19900926

Owner name: FIDELCOR BUSINESS CREDIT CORPORATION, 810 SEVENTH

Free format text: SECURITY INTEREST;ASSIGNOR:GENICOM CORPORATION;REEL/FRAME:005521/0609

Effective date: 19900925