GB1441563A – Timing signal generating system for a printer
– Google Patents
GB1441563A – Timing signal generating system for a printer
– Google Patents
Timing signal generating system for a printer
Info
Publication number
GB1441563A
GB1441563A
GB221475A
GB221475A
GB1441563A
GB 1441563 A
GB1441563 A
GB 1441563A
GB 221475 A
GB221475 A
GB 221475A
GB 221475 A
GB221475 A
GB 221475A
GB 1441563 A
GB1441563 A
GB 1441563A
Authority
GB
United Kingdom
Prior art keywords
counter
characters
oscillator
detector
ring counter
Prior art date
1974-01-17
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
Application number
GB221475A
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.)
Ricoh Printing Systems America Inc
Original Assignee
Ricoh Printing Systems America Inc
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.)
1974-01-17
Filing date
1975-01-17
Publication date
1976-07-07
1975-01-17
Application filed by Ricoh Printing Systems America Inc
filed
Critical
Ricoh Printing Systems America Inc
1976-07-07
Publication of GB1441563A
publication
Critical
patent/GB1441563A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
B41J9/00—Hammer-impression mechanisms
B41J9/02—Hammers; Arrangements thereof
B41J9/10—Hammers; Arrangements thereof of more than one hammer, e.g. one for each character position
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
B41J9/00—Hammer-impression mechanisms
B41J9/44—Control for hammer-impression mechanisms
Abstract
1441563 Printers DATAPRODUCTS CORP 17 Jan 1975 [17 Jan 1974] 2214/75 Heading G4H A system for generating timing signals for hammer actuation in a printer comprises sensing means 35 adapted to sense the passage of characters along a printing line along which the hammers are aligned more closely spaced than the characters), a phase detector 36 comparing the phases of the output of the sensing means 35 and an output of a ring counter 42 to control the frequency of a voltage-controlled oscillator 40 via filter-integrating means 41, the oscillator 40 driving the ring counter 42. As disclosed, the ratio character spacing (on a typebelt moving along the print line) over hammer spacing is 5/4 so the ring counter 42 has 5 outputs corresponding to the 5 sub-cycles in which respective interleaved groups of characters become aligned with hammers, to control hammer actuation timing. The oscillator 40 frequency is nominally five times that of the pulses from detector 35 which detects slugs 30 on typebelt 10 (one character per slug). Another detector 75 detects only some slugs (e.g. one) to reset counter 42. Variable delays 48, 86 are for initial adjustment. There may be more than one character per slug in which case a division circuit is inserted in the connection from counter 42 to phase detector 36.
GB221475A
1974-01-17
1975-01-17
Timing signal generating system for a printer
Expired
GB1441563A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
US434260A
US3865029A
(en)
1974-01-17
1974-01-17
Timing signal generating means for a high speed printer
Publications (1)
Publication Number
Publication Date
GB1441563A
true
GB1441563A
(en)
1976-07-07
Family
ID=23723505
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB221475A
Expired
GB1441563A
(en)
1974-01-17
1975-01-17
Timing signal generating system for a printer
Country Status (7)
Country
Link
US
(1)
US3865029A
(en)
JP
(1)
JPS50104831A
(en)
CA
(1)
CA1011258A
(en)
DE
(2)
DE2501431C3
(en)
FR
(1)
FR2258669A1
(en)
GB
(1)
GB1441563A
(en)
NL
(1)
NL7500355A
(en)
Families Citing this family (5)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
FR2214591B1
(en)
*
1973-01-19
1975-07-18
Honeywell Bull Soc Ind
CH614663A5
(en)
*
1977-02-25
1979-12-14
Ibm
Method and circuit for the continuous determination of the advance time in inkjet printers
US4079670A
(en)
*
1977-06-10
1978-03-21
Dataproducts
Phase lock font position and impact hammer timing control
US4243520A
(en)
*
1978-08-10
1981-01-06
Knippi «Niproruda»
Method for separation of large sized salt containing minerals
DE3643214A1
(en)
*
1986-12-18
1988-06-30
Agfa Gevaert Ag
Electrophotographic plotter with a circulating photoconductor carrier
Family Cites Families (6)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US3303775A
(en)
*
1963-09-20
1967-02-14
Ibm
Variable speed printer apparatus and type carrier device therefor
US3519893A
(en)
*
1967-09-29
1970-07-07
Potter Instrument Co Inc
Circuit for energizing electromagnetic operated hammers in a high speed impact printer
FR2014509A1
(en)
*
1968-07-05
1970-04-17
Stud Labo Telecom Centro
US3654857A
(en)
*
1969-06-16
1972-04-11
Mohawk Data Sciences Corp
Printer having fewer hammer actuating means than hammers
US3603252A
(en)
*
1969-12-15
1971-09-07
Mohawk Data Sciences Corp
Zero suppression circuits in high speed numeric printing
US3629848A
(en)
*
1970-09-21
1971-12-21
Ibm
Print compare operation from main storage
1974
1974-01-17
US
US434260A
patent/US3865029A/en
not_active
Expired – Lifetime
1974-12-04
CA
CA215,202A
patent/CA1011258A/en
not_active
Expired
1975
1975-01-13
NL
NL7500355A
patent/NL7500355A/en
not_active
Application Discontinuation
1975-01-15
DE
DE2501431A
patent/DE2501431C3/en
not_active
Expired
1975-01-15
DE
DE19757501004U
patent/DE7501004U/en
not_active
Expired
1975-01-16
JP
JP50007404A
patent/JPS50104831A/ja
active
Pending
1975-01-17
FR
FR7501489A
patent/FR2258669A1/fr
not_active
Withdrawn
1975-01-17
GB
GB221475A
patent/GB1441563A/en
not_active
Expired
Also Published As
Publication number
Publication date
FR2258669A1
(en)
1975-08-18
DE2501431B2
(en)
1977-10-06
JPS50104831A
(en)
1975-08-19
DE7501004U
(en)
1978-09-14
DE2501431C3
(en)
1978-06-01
US3865029A
(en)
1975-02-11
CA1011258A
(en)
1977-05-31
DE2501431A1
(en)
1975-07-31
NL7500355A
(en)
1975-07-21
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Legal Events
Date
Code
Title
Description
1976-12-08
PS
Patent sealed [section 19, patents act 1949]
1979-09-26
PCNP
Patent ceased through non-payment of renewal fee
