EP0854039A3 - Method and apparatus for measuring the amount of discharged ink, printing apparatus, and method of measuring the amount of ink discharged in the printing apparatus - Google Patents

Method and apparatus for measuring the amount of discharged ink, printing apparatus, and method of measuring the amount of ink discharged in the printing apparatus Download PDF

Info

Publication number
EP0854039A3
EP0854039A3 EP97309970A EP97309970A EP0854039A3 EP 0854039 A3 EP0854039 A3 EP 0854039A3 EP 97309970 A EP97309970 A EP 97309970A EP 97309970 A EP97309970 A EP 97309970A EP 0854039 A3 EP0854039 A3 EP 0854039A3
Authority
EP
European Patent Office
Prior art keywords
ink
amount
line pattern
sensing
discharged
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.)
Granted
Application number
EP97309970A
Other languages
German (de)
French (fr)
Other versions
EP0854039A2 (en
EP0854039B1 (en
Inventor
Satoshi Wada
Makoto Akahira
Tadao Saito
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.)
Canon Inc
Original Assignee
Canon 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.)
Filing date
Publication date
Application filed by Canon Inc filed Critical Canon Inc
Publication of EP0854039A2 publication Critical patent/EP0854039A2/en
Publication of EP0854039A3 publication Critical patent/EP0854039A3/en
Application granted granted Critical
Publication of EP0854039B1 publication Critical patent/EP0854039B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • B41J2/015—Ink jet characterised by the jet generation process
    • B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
    • B41J2/04528—Control methods or devices therefor, e.g. driver circuits, control circuits aiming at warming up the head
    • 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
    • B41J2/015—Ink jet characterised by the jet generation process
    • B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
    • B41J2/04558—Control methods or devices therefor, e.g. driver circuits, control circuits detecting presence or properties of a dot on paper
    • 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
    • B41J2/015—Ink jet characterised by the jet generation process
    • B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
    • B41J2/0458—Control methods or devices therefor, e.g. driver circuits, control circuits controlling heads based on heating elements forming bubbles
    • 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
    • B41J2/015—Ink jet characterised by the jet generation process
    • B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
    • B41J2/04588—Control methods or devices therefor, e.g. driver circuits, control circuits using a specific waveform
    • 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
    • B41J2/015—Ink jet characterised by the jet generation process
    • B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
    • B41J2/04593—Dot-size modulation by changing the size of the drop
    • 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
    • B41J2/015—Ink jet characterised by the jet generation process
    • B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
    • B41J2/04598—Pre-pulse
    • 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
    • B41J2/21—Ink jet for multi-colour printing
    • B41J2/2121—Ink jet for multi-colour printing characterised by dot size, e.g. combinations of printed dots of different diameter
    • B41J2/2128—Ink jet for multi-colour printing characterised by dot size, e.g. combinations of printed dots of different diameter by means of energy modulation

Abstract

A method of instantly measuring the amount of ink discharged from a nozzle. The method of measuring the amount of discharged ink includes: a line pattern forming step of forming a line pattern by discharging ink from an ink-jet printhead; a first image-sensing step of sensing the line pattern by an image sensing device; a second image-sensing step of sensing a portion other than the line pattern by the image sensing device; a density calculating step of calculating density of each pixel of the line pattern by dividing the luminance value of the portion sensed in said second image-sensing step by the luminance value of the line pattern sensed in said first image-sensing step and calculating a common logarithm; an integrating step of integrating the density of each pixel of the entire line pattern calculated in said density calculating step; and an ink-discharge-amount determining step of obtaining the amount of discharged ink on the basis of the integrated density calculated in said integrating step.
EP97309970A 1996-12-19 1997-12-10 Method and apparatus for measuring the amount of discharged ink, printing apparatus, and method of measuring the amount of ink discharged in the printing apparatus Expired - Lifetime EP0854039B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP33991496 1996-12-19
JP33991496 1996-12-19
JP339914/96 1996-12-19

Publications (3)

Publication Number Publication Date
EP0854039A2 EP0854039A2 (en) 1998-07-22
EP0854039A3 true EP0854039A3 (en) 1999-05-19
EP0854039B1 EP0854039B1 (en) 2003-09-24

Family

ID=18331970

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97309970A Expired - Lifetime EP0854039B1 (en) 1996-12-19 1997-12-10 Method and apparatus for measuring the amount of discharged ink, printing apparatus, and method of measuring the amount of ink discharged in the printing apparatus

Country Status (3)

Country Link
EP (1) EP0854039B1 (en)
KR (1) KR100242853B1 (en)
DE (1) DE69725110T2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100470579B1 (en) * 2002-11-02 2005-03-08 삼성전자주식회사 Controlling device of ink injection heater for ink-jet printer and controlling method thereof
JP4470501B2 (en) * 2004-01-22 2010-06-02 セイコーエプソン株式会社 Calibration of ink discharge for printer
WO2011084158A1 (en) * 2010-01-07 2011-07-14 Hewlett-Packard Development Company, L.P. Reflection densitometer
WO2019245566A1 (en) 2018-06-21 2019-12-26 Hewlett-Packard Development Company, L.P. Method and apparatus for printhead maintenance

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0288044A2 (en) * 1987-04-24 1988-10-26 Matsushita Electric Industrial Co., Ltd. Ink jet recording apparatus with density control function
EP0461759A2 (en) * 1990-05-11 1991-12-18 Canon Kabushiki Kaisha Recording apparatus for performing recording using recording head
US5387976A (en) * 1993-10-29 1995-02-07 Hewlett-Packard Company Method and system for measuring drop-volume in ink-jet printers
US5519419A (en) * 1994-02-18 1996-05-21 Xerox Corporation Calibration system for a thermal ink-jet printer
US5528270A (en) * 1991-09-11 1996-06-18 Canon Kabushiki Kaisha Method for correcting density unevenness for a recording head and an image formation apparatus provided with such a method
EP0747224A1 (en) * 1995-05-30 1996-12-11 Canon Kabushiki Kaisha System of measuring the amount of ink discharged while printing

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0288044A2 (en) * 1987-04-24 1988-10-26 Matsushita Electric Industrial Co., Ltd. Ink jet recording apparatus with density control function
EP0461759A2 (en) * 1990-05-11 1991-12-18 Canon Kabushiki Kaisha Recording apparatus for performing recording using recording head
US5528270A (en) * 1991-09-11 1996-06-18 Canon Kabushiki Kaisha Method for correcting density unevenness for a recording head and an image formation apparatus provided with such a method
US5387976A (en) * 1993-10-29 1995-02-07 Hewlett-Packard Company Method and system for measuring drop-volume in ink-jet printers
US5519419A (en) * 1994-02-18 1996-05-21 Xerox Corporation Calibration system for a thermal ink-jet printer
EP0747224A1 (en) * 1995-05-30 1996-12-11 Canon Kabushiki Kaisha System of measuring the amount of ink discharged while printing

Also Published As

Publication number Publication date
KR19980063960A (en) 1998-10-07
DE69725110T2 (en) 2004-07-08
EP0854039A2 (en) 1998-07-22
EP0854039B1 (en) 2003-09-24
DE69725110D1 (en) 2003-10-30
KR100242853B1 (en) 2000-03-02

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