GB1422984A - Control unit for controlling printing head of a series printer - Google Patents
Control unit for controlling printing head of a series printerInfo
- Publication number
- GB1422984A GB1422984A GB2472973A GB2472973A GB1422984A GB 1422984 A GB1422984 A GB 1422984A GB 2472973 A GB2472973 A GB 2472973A GB 2472973 A GB2472973 A GB 2472973A GB 1422984 A GB1422984 A GB 1422984A
- Authority
- GB
- United Kingdom
- Prior art keywords
- character
- print head
- buffer
- printed
- line
- 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
- B41J5/00—Devices or arrangements for controlling character selection
- B41J5/30—Character or syllable selection controlled by recorded information
- B41J5/44—Character or syllable selection controlled by recorded information characterised by storage of recorded information
- B41J5/46—Character or syllable selection controlled by recorded information characterised by storage of recorded information on internal storages
-
- 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
- B41J5/00—Devices or arrangements for controlling character selection
- B41J5/30—Character or syllable selection controlled by recorded information
Landscapes
- Record Information Processing For Printing (AREA)
- Character Spaces And Line Spaces In Printers (AREA)
Abstract
1422984 Control of printers SOC LAGOBAX 23 May 1973 [25 May 1972] 24729/73 Heading G4H A print head control unit comprises a buffer 301, means for returning the head to the beginning of a line when the characters in the buffer have been printed, and means for rapidly returning the head to the next printing position along the line when new characters have been stored in the buffer. The addresses in the buffer of the last character to be entered and the next character to be printed are recorded in counters AE, AS which are incremented by 1 at the time of each character input and output respectively on lines 305, 306. A comparator 304 compares the addresses to produce two signals OKS (print next character) or OKE (input new character). The print head position is indicated by the count accumulated in a counter 310 which is incremented as the print head moves from character to character. When AR = AS (i.e. all the characters have been printed) the contents of 310 are transferred to a counter register 312 while the print head is returned to the beginning of the line. New characters are stored in 301, and the print head advanced along the line, decrementing 312 as it does so, until the last printed position is reached; a decoding circuit 313 detects a count of zero in 311, and printing is resumed. Provision is made (314-319) for recognizing and performing functions such as carriage return and tabulation. The printer may receive data from a keyboard 403, Figs. 4, 5 (not shown), and/or from a remote computer connected thereto by modems (404-406).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7218601A FR2185964A5 (en) | 1972-05-25 | 1972-05-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1422984A true GB1422984A (en) | 1976-01-28 |
Family
ID=9099061
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2472973A Expired GB1422984A (en) | 1972-05-25 | 1973-05-23 | Control unit for controlling printing head of a series printer |
Country Status (4)
Country | Link |
---|---|
JP (1) | JPS5312421B2 (en) |
DE (1) | DE2326798C3 (en) |
FR (1) | FR2185964A5 (en) |
GB (1) | GB1422984A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4026402A (en) * | 1975-07-28 | 1977-05-31 | Centronics Data Computer Corporation | Incremental line printer |
-
1972
- 1972-05-25 FR FR7218601A patent/FR2185964A5/fr not_active Expired
-
1973
- 1973-05-23 GB GB2472973A patent/GB1422984A/en not_active Expired
- 1973-05-25 DE DE19732326798 patent/DE2326798C3/en not_active Expired
- 1973-05-25 JP JP5791673A patent/JPS5312421B2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2326798A1 (en) | 1973-12-06 |
JPS5312421B2 (en) | 1978-05-01 |
FR2185964A5 (en) | 1974-01-04 |
DE2326798C3 (en) | 1978-04-13 |
JPS49124931A (en) | 1974-11-29 |
DE2326798B2 (en) | 1976-07-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |