JPS5519514A - Method of detecting drop interval for charge deflecting ink-jet photoprinter - Google Patents

Method of detecting drop interval for charge deflecting ink-jet photoprinter

Info

Publication number
JPS5519514A
JPS5519514A JP9158578A JP9158578A JPS5519514A JP S5519514 A JPS5519514 A JP S5519514A JP 9158578 A JP9158578 A JP 9158578A JP 9158578 A JP9158578 A JP 9158578A JP S5519514 A JPS5519514 A JP S5519514A
Authority
JP
Japan
Prior art keywords
drop
discharge
ink
moderate
intervals
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.)
Pending
Application number
JP9158578A
Other languages
Japanese (ja)
Inventor
Masanori Horiie
Koichiro Jinnai
Kyuhachiro Iwasaki
Yutaka Kodama
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 Co Ltd
Original Assignee
Ricoh Co Ltd
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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP9158578A priority Critical patent/JPS5519514A/en
Publication of JPS5519514A publication Critical patent/JPS5519514A/en
Pending legal-status Critical Current

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
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/07—Ink jet characterised by jet control
    • B41J2/125—Sensors, e.g. deflection sensors

Abstract

PURPOSE:To improve precision of a charge drop deflection and thus to secure a high photoprint quality through detecting fluctuation of the ink drop speed and controlling ink pressure or quantity of discharge by detecting slippage from the characteristic value coping with a moderate interval of the ink drop. CONSTITUTION:Against the flying period T of discharge drop group and non-discharge drop group, a value in moderate intervals of the drops is assumed as L in a space distance between the two points whereat the positive differential coefficient of a discharge induced to the electrode arranged isolatedly becomes maximum and the negative differential coefficient becomes maximum. Two pairs of detection electrodes 4 are arranged in the intervals L-DELTAL, L+DELTAL, and each output is put in differential amplifiers AMP1 and AMP2. Levels of each output V01 and V02 are compared to determine whether or not drop intervals are moderate, and thus incoming noises are cancelled. Further a fluctuation of the drop interval proportional to the flying speed is detected to either control the quantity of drop charges or control the ink pressure, thereby keeping the drop flying speed constant to better precision of the deflection.
JP9158578A 1978-07-28 1978-07-28 Method of detecting drop interval for charge deflecting ink-jet photoprinter Pending JPS5519514A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9158578A JPS5519514A (en) 1978-07-28 1978-07-28 Method of detecting drop interval for charge deflecting ink-jet photoprinter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9158578A JPS5519514A (en) 1978-07-28 1978-07-28 Method of detecting drop interval for charge deflecting ink-jet photoprinter

Publications (1)

Publication Number Publication Date
JPS5519514A true JPS5519514A (en) 1980-02-12

Family

ID=14030618

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9158578A Pending JPS5519514A (en) 1978-07-28 1978-07-28 Method of detecting drop interval for charge deflecting ink-jet photoprinter

Country Status (1)

Country Link
JP (1) JPS5519514A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6052358A (en) * 1983-04-29 1985-03-25 イマ−ジユ・エス・ア− Charge controller for controlling velocity of flow of ink drop of ink jet printer and printer with said device
FR2636884A1 (en) * 1988-09-29 1990-03-30 Imaje Sa DEVICE FOR MONITORING AND REGULATING AN INK AND ITS TREATMENT IN A CONTINUOUS INK JET PRINTER

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6052358A (en) * 1983-04-29 1985-03-25 イマ−ジユ・エス・ア− Charge controller for controlling velocity of flow of ink drop of ink jet printer and printer with said device
JPH0543509B2 (en) * 1983-04-29 1993-07-01 Imaaju Sa
FR2636884A1 (en) * 1988-09-29 1990-03-30 Imaje Sa DEVICE FOR MONITORING AND REGULATING AN INK AND ITS TREATMENT IN A CONTINUOUS INK JET PRINTER
US5160939A (en) * 1988-09-29 1992-11-03 Imaje S.A. Device for controlling and regulating an ink and processing thereof in a continuous ink jet printer

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