GB1419265A - High speed printer - Google Patents
High speed printerInfo
- Publication number
- GB1419265A GB1419265A GB5416372A GB5416372A GB1419265A GB 1419265 A GB1419265 A GB 1419265A GB 5416372 A GB5416372 A GB 5416372A GB 5416372 A GB5416372 A GB 5416372A GB 1419265 A GB1419265 A GB 1419265A
- Authority
- GB
- United Kingdom
- Prior art keywords
- carriage
- character
- row
- matrix
- bit
- 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
Links
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
- B41J25/00—Actions or mechanisms not otherwise provided for
- B41J25/001—Mechanisms for bodily moving print heads or carriages parallel to the paper surface
- B41J25/006—Mechanisms for bodily moving print heads or carriages parallel to the paper surface for oscillating, e.g. page-width print heads provided with counter-balancing means or shock absorbers
-
- 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
- B41J15/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in continuous form, e.g. webs
- B41J15/04—Supporting, feeding, or guiding devices; Mountings for web rolls or spindles
- B41J15/06—Supporting, feeding, or guiding devices; Mountings for web rolls or spindles characterised by being applied to printers having stationary carriages
-
- 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
- B41J2/245—Print head assemblies line printer type
Abstract
1419265 Printers CENTRONICS DATA COMPUTER CORP 23 Nov 1972 [2 Dec 1971] 54163/72 Heading G4H [Also in Division B6] A character selection and decoding control system is provided for a dot matrix printer using a plurality of print wires spaced along the print line so that each deals with a respective fraction of it. In a printer, a carriage movable transversely to the direction of document movement, and thus along the print line, holds P print wires spaced along the print line, together with their drive coils, the wires being spaced apart so that each prints 1/Pth of the line and the carriage reciprocates through only this fraction of the line length. Each character is built up as a matrix of dots. Thus a given wire prints the top row of its first character, dot by dot, then the top row of its second character, &c. When the top row of each character has been printed, the document advances and the carriage returns so that the second row of each character can be printed, and so on. The paper can alternatively advance continuously, in which case the carriage moves at an angle to compensate. In one embodiment of this, rollers on the carriage move up inclined surfaces, and in another the carriage rides between two inclined parallel rails, cylindrical bearings being provided between grooves in the rails and in the sides of the carriage. In the latter case, the carriage is reciprocated by a motor-driven cam. In one embodiment, the characters to be printed are passed in turn, parallel-by-bit (optionally after conversion from serial-by-bit) into a recirculating shift register which holds the entire line. Successive groups of P characters are supplied in turn to a set of P character generators, one character of the current group to each generator. The generators are conditioned by a row counter to provide (parallel by bit) the appropriate row of the matrix representations of the P characters of the group, each such row being serialized under control of a column counter to feed the respective wire drive coil. Timing is provided by sensing a scale to produce pulses as the carriage moves, and by limit switches for the carriage. Circuits to detect control codes (sound bell, delete data, line feed, carriage return) in the incoming data stream are provided fed in parallel with the shift register. In another embodiment, the recirculating shift register feeds one character at a time in the appropriate order (see below) to a single character generator conditioned according to the column required of the character matrix to provide this one column, one bit of which is then selected according to the row required and entered into a P-bit buffer register at an appropriate position. The buffer register is filled in this way with a corresponding bit of the matrix representations of the P characters currently being printed, the register contents being read out together to control the P wire drive coils when a pulse arrives from sensing the carriage-position scale (indicating registration). Characters can be printed with double height, by printing each row of the matrix twice. The apparatus may be used to plot curves, the shift register being loaded from a core matrix store.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US20402471A | 1971-12-02 | 1971-12-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1419265A true GB1419265A (en) | 1975-12-24 |
Family
ID=22756298
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5416372A Expired GB1419265A (en) | 1971-12-02 | 1972-11-23 | High speed printer |
Country Status (8)
Country | Link |
---|---|
JP (1) | JPS5235498B2 (en) |
BE (1) | BE792213A (en) |
CA (1) | CA965300A (en) |
CH (1) | CH556240A (en) |
DE (1) | DE2258247C3 (en) |
FR (1) | FR2164226A5 (en) |
GB (1) | GB1419265A (en) |
NL (1) | NL7216323A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4242003A (en) * | 1978-10-16 | 1980-12-30 | Xerox Corporation | Multi-pass matrix printing |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5354193Y2 (en) * | 1974-02-07 | 1978-12-25 | ||
GB1479963A (en) * | 1974-05-06 | 1977-07-13 | Ici Ltd | Pattern printing apparatus |
US3970183A (en) * | 1974-06-05 | 1976-07-20 | Centronics Data Computer Corporation | Random access line printer |
US3941051A (en) * | 1974-08-08 | 1976-03-02 | Printronix, Inc. | Printer system |
FR2300678A1 (en) * | 1975-02-13 | 1976-09-10 | Logabax | PRINTING DEVICE FOR FAST PRINTERS |
JPS51141529A (en) * | 1975-06-02 | 1976-12-06 | Oki Electric Ind Co Ltd | System for correcting print timing pulses |
JPS5245415A (en) * | 1975-10-06 | 1977-04-09 | Nippon Telegraph & Telephone | High speed dot printer |
GB1570722A (en) * | 1976-03-04 | 1980-07-09 | Facit Ab | Printing |
JPS52121414A (en) * | 1976-04-05 | 1977-10-12 | Hideki Arai | Braille output line printer |
JPS5321617A (en) * | 1976-08-10 | 1978-02-28 | Oki Electric Ind Co Ltd | Page braille line printer |
JPS5381123U (en) * | 1976-12-06 | 1978-07-05 | ||
JPS52142412U (en) * | 1977-04-14 | 1977-10-28 | ||
JPS54127325A (en) * | 1978-03-27 | 1979-10-03 | Canon Inc | Ink jet printer |
JPS5537367A (en) * | 1978-09-09 | 1980-03-15 | Tokyo Electric Co Ltd | Dot printer |
JPS5845987A (en) * | 1981-09-16 | 1983-03-17 | Seikosha Co Ltd | Deciding method for print starting position of dot printer |
JPS58199170A (en) * | 1982-05-18 | 1983-11-19 | Usac Electronics Ind Co Ltd | System for correcting positive and negative printing shift |
-
0
- BE BE792213D patent/BE792213A/en not_active IP Right Cessation
-
1972
- 1972-06-12 JP JP5776272A patent/JPS5235498B2/ja not_active Expired
- 1972-11-21 CA CA157,123A patent/CA965300A/en not_active Expired
- 1972-11-23 GB GB5416372A patent/GB1419265A/en not_active Expired
- 1972-11-28 DE DE19722258247 patent/DE2258247C3/en not_active Expired
- 1972-12-01 NL NL7216323A patent/NL7216323A/xx active Search and Examination
- 1972-12-01 CH CH1755772A patent/CH556240A/en not_active IP Right Cessation
- 1972-12-01 FR FR7242749A patent/FR2164226A5/fr not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4242003A (en) * | 1978-10-16 | 1980-12-30 | Xerox Corporation | Multi-pass matrix printing |
Also Published As
Publication number | Publication date |
---|---|
NL7216323A (en) | 1973-06-05 |
DE2258247A1 (en) | 1973-06-07 |
BE792213A (en) | 1973-06-01 |
DE2258247B2 (en) | 1978-02-09 |
DE2258247C3 (en) | 1978-10-05 |
CH556240A (en) | 1974-11-29 |
JPS4865844A (en) | 1973-09-10 |
CA965300A (en) | 1975-04-01 |
FR2164226A5 (en) | 1973-07-27 |
JPS5235498B2 (en) | 1977-09-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |