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JPH03169640A - Inkjet recording apparatus - Google Patents

Inkjet recording apparatus

Info

Publication number
JPH03169640A
JPH03169640A JP30936189A JP30936189A JPH03169640A JP H03169640 A JPH03169640 A JP H03169640A JP 30936189 A JP30936189 A JP 30936189A JP 30936189 A JP30936189 A JP 30936189A JP H03169640 A JPH03169640 A JP H03169640A
Authority
JP
Japan
Prior art keywords
image
inkjet recording
recording apparatus
test print
determining
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
JP30936189A
Other languages
Japanese (ja)
Other versions
JP2773939B2 (en
Inventor
Hisashi Fukushima
福島　久史
Masami Senzaki
昌巳 泉崎
Yoshihiro Takada
吉宏 高田
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
Priority to JP1309361A priority Critical patent/JP2773939B2/en
Publication of JPH03169640A publication Critical patent/JPH03169640A/en
Application granted granted Critical
Publication of JP2773939B2 publication Critical patent/JP2773939B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Ink Jet (AREA)
  • Particle Formation And Scattering Control In Inkjet Printers (AREA)

Abstract

PURPOSE:To prevent the density irregularity by providing an inkjet recording head with multi nozzles, a detecting means for reading a test print by the recording head thereby to judge an abnormal image, and a different mode practicing means for carrying out a different mode than the recording mode in accordance with the judgement of the detecting means. CONSTITUTION:A reading system reads a test print (S1). An abnormality detecting circuit 230 extracts characteristics of an image, e.g. the gradation degree of the image density in a very small area in the arranging direction of nozzles (S2), and compares the same with the characteristics of a limit image (S3). For example, if the image density is changed 25% or more in the area 1mm away, it is judged as an abnormal image (S4), without performing corrections. Whether the image is possible to be recovered is judged in S5. An abnormal image may be caused by the temporary adhesion of the ink dye to the orifice surface, and if the abnormal image is resulting from this reason, the abnormality detecting circuit 230 judges it possible to be recovered.

Description

【発明の詳細な説明】 ［産業上の利用分野］ 本発明はマルチノズルのインクジェット記録装置に関す
る。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a multi-nozzle inkjet recording device.

［従来の技術］[Conventional technology]

Claims (1)

【特許請求の範囲】 １）マルチノズルからなるインクジェット記録ヘッドと
、該記録ヘッドによるテストプリントを読取って異常画
像を判定する判定手段と、該判定手段による判定に応じ
て画像記録とは別のモードを行なう別モード実行手段と
を具えたことを特徴とするインクジェット記録装置。 ２）前記判定手段が、前記マルチノズルのノズル毎の吐
出量の差が所定値以上であるか否かを判定する手段であ
ることを特徴とする請求項１に記載のインクジェット記
録装置。 ３）前記判定手段が、前記テストプリント画像の変化が
所定値以上であるか否かを判定する手段であることを特
徴とする請求項１に記載のインクジェット記録装置。 ４）前記実行手段が、画像記録をストップする手段であ
ることを特徴とする請求項１に記載のインクジェット記
録装置。 ５）前記実行手段が所定数空吐出を行なう手段であるこ
とを特徴とする請求項１に記載のインクジェット記録装
置。[Scope of Claims] 1) An inkjet recording head consisting of a multi-nozzle, a determining means for reading a test print by the recording head and determining an abnormal image, and a mode different from image recording according to the determination by the determining means. An inkjet recording device characterized by comprising: a separate mode execution means for performing the following. 2) The inkjet recording apparatus according to claim 1, wherein the determining means is a means for determining whether a difference in ejection amount between the nozzles of the multi-nozzle is equal to or greater than a predetermined value. 3) The inkjet recording apparatus according to claim 1, wherein the determining means is a means for determining whether the change in the test print image is greater than or equal to a predetermined value. 4) The inkjet recording apparatus according to claim 1, wherein the execution means is means for stopping image recording. 5) The inkjet recording apparatus according to claim 1, wherein the execution means is means for performing a predetermined number of idle ejections.
JP1309361A 1989-11-30 1989-11-30 Ink jet recording device Expired - Fee Related JP2773939B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1309361A JP2773939B2 (en) 1989-11-30 1989-11-30 Ink jet recording device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1309361A JP2773939B2 (en) 1989-11-30 1989-11-30 Ink jet recording device

Publications (2)

Publication Number Publication Date
JPH03169640A true JPH03169640A (en) 1991-07-23
JP2773939B2 JP2773939B2 (en) 1998-07-09

Family

ID=17992076

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1309361A Expired - Fee Related JP2773939B2 (en) 1989-11-30 1989-11-30 Ink jet recording device

Country Status (1)

Country Link
JP (1) JP2773939B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6247780B1 (en) 1991-08-09 2001-06-19 Canon Kabushiki Kaisha Shading correction processing for an image forming apparatus
JP2004299219A (en) * 2003-03-31 2004-10-28 Toppan Forms Co Ltd Inkjet printing system
JP2006281116A (en) * 2005-04-01 2006-10-19 Seiko Epson Corp Dot quality detection method, dot quality detection device, and droplet discharge device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01130948A (en) * 1987-11-17 1989-05-23 Canon Inc Ink jet printer

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01130948A (en) * 1987-11-17 1989-05-23 Canon Inc Ink jet printer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6247780B1 (en) 1991-08-09 2001-06-19 Canon Kabushiki Kaisha Shading correction processing for an image forming apparatus
JP2004299219A (en) * 2003-03-31 2004-10-28 Toppan Forms Co Ltd Inkjet printing system
JP2006281116A (en) * 2005-04-01 2006-10-19 Seiko Epson Corp Dot quality detection method, dot quality detection device, and droplet discharge device

Also Published As

Publication number Publication date
JP2773939B2 (en) 1998-07-09

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