JP2001183898A - Image forming device - Google Patents

Image forming device

Info

Publication number
JP2001183898A
JP2001183898A JP36683799A JP36683799A JP2001183898A JP 2001183898 A JP2001183898 A JP 2001183898A JP 36683799 A JP36683799 A JP 36683799A JP 36683799 A JP36683799 A JP 36683799A JP 2001183898 A JP2001183898 A JP 2001183898A
Authority
JP
Japan
Prior art keywords
developer
remaining amount
count number
image forming
count
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
JP36683799A
Other languages
Japanese (ja)
Inventor
Akihiro Kobayashi
昭浩 小林
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.)
Kyocera Corp
Original Assignee
Kyocera Corp
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 Kyocera Corp filed Critical Kyocera Corp
Priority to JP36683799A priority Critical patent/JP2001183898A/en
Publication of JP2001183898A publication Critical patent/JP2001183898A/en
Pending legal-status Critical Current

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  • Dry Development In Electrophotography (AREA)
  • Control Or Security For Electrophotography (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide an image forming device constituted such that the exhausted state of developer is prevented from occurring since difference between an actually counted number and a right number is hardly present when the residual quantity of developer in a developer housing container 4 comes to the limit level. SOLUTION: When it is detected by an optical transmission sensor 5 that the residual quantity of developer in the developer housing container 4 comes to the prescribed limit level, a correction signal 7 is transmitted to an accumulation memory means 3 by a prescribed residual quantity detection means 6 and the count number stored in the storage means 3 is substituted for the previously- stored count number for correction.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、画像形成装置、特
に現像剤の残量を検知する画像形成装置に関するもので
ある。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image forming apparatus, and more particularly to an image forming apparatus for detecting a remaining amount of a developer.

【0002】[0002]

【従来の技術】従来の画像形成装置の現像剤収納容器内
の現像剤残量を表示する方法としては、印字データに基
づいたピクセル値をカウントし、そのカウント値を積算
記憶し、その積算記憶している値と予め設定された値と
を比較し、最も近い設定値に基づいて現像剤の残量をド
ットマトリクス表示したり、用紙に印刷したりすること
が知られている。
2. Description of the Related Art As a conventional method of displaying the remaining amount of developer in a developer storage container of an image forming apparatus, a pixel value based on print data is counted, the count value is integrated and stored, and the integrated storage is performed. It is known that the value of the developer is compared with a preset value, and the remaining amount of the developer is displayed in a dot matrix or printed on paper based on the closest set value.

【0003】例えば、特開平3−59689号に記載さ
れているように、コントローラから送られてくる印字デ
ータに基づきトナー又はインク等の現像剤を使用してド
ット構成の像を形成する像形成機用の現像剤監視装置に
おいて、コントローラから送られてくる印字データを傍
受するとともに、印字データ中の黒ドットデータを判別
するデータ判別回路と、このデータ判別回路で判別され
た黒ドットデータを計測するカウンタと、このカウンタ
出力が予め設定された値以上になるとアラーム信号を出
力し警報手段を動作させるアラーム発生回路とを装備し
た装置がある。
For example, as described in Japanese Patent Application Laid-Open No. 3-59689, an image forming machine for forming a dot-structured image using a developer such as toner or ink based on print data sent from a controller. In a developer monitoring device for use, a print data sent from a controller is intercepted, a data discriminating circuit for discriminating black dot data in the print data, and black dot data discriminated by the data discriminating circuit are measured. There is a device equipped with a counter and an alarm generating circuit that outputs an alarm signal when the counter output becomes equal to or greater than a preset value and operates alarm means.

【0004】また、このような装置において、カウンタ
値を予め設定された値と比較出力して現像剤の残量を算
出し、現像剤残量表示をする方式は従来からなされてい
る。
In such an apparatus, a method of comparing the counter value with a preset value to calculate the remaining amount of the developer and displaying the remaining amount of the developer has been conventionally used.

【0005】[0005]

【発明が解決しようとする課題】ところが、従来のよう
なカウント値により現像剤残量を算出する方法では、ピ
クセル(黒ドット)値計測手段の計測誤差、記憶時ある
いは通信容量の削減に伴う端数切り捨てによる積算誤
差、現像バイアス値変更に伴う現実使用トナー量変化な
どによって、算出した現像剤残量と実際の現像剤残量と
が一致しないことが多いという問題があり、その不一致
により現像剤の枯渇状態を引き起こし、画像形成装置の
正常な使用を困難にしてしまうという問題があった。
However, in the conventional method of calculating the remaining amount of the developer based on the count value, a measurement error of the pixel (black dot) value measuring means, a fraction at the time of storage or a reduction in the communication capacity. There is a problem that the calculated remaining amount of the developer often does not match the actual remaining amount of the developer due to an accumulation error due to the truncation, a change in the actual amount of toner used due to a change in the developing bias value, and the like. This causes a depletion state, which makes it difficult to use the image forming apparatus normally.

【0006】[0006]

【課題を解決するための手段】本発明は、上記問題点に
鑑みてなされたものであり、印字データのピクセル値を
カウントするカウント手段と、該カウント手段の現像剤
収納容器交換後からのカウント数を積算して記憶する記
憶手段と、前記現像剤収納容器が所定残量となったか否
かを検知する検知手段と、を具えてなる画像形成装置に
おいて、前記記憶手段に前記所定残量に対応する前記カ
ウント手段の現像剤収納容器交換後からのカウント数を
補正カウント数として記憶させ、前記検知手段が所定残
量となったことを検知すると、前記記憶手段に記憶され
ているカウント数を前記補正カウント数に変更する補正
手段を具えた画像形成装置としたものである。
SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has a counter for counting the pixel value of print data, and a counter for counting the number of pixels after replacement of the developer storage container. An image forming apparatus comprising: a storage unit that accumulates and stores the number; and a detection unit that detects whether the developer storage container has reached a predetermined remaining amount. The corresponding count number of the counting unit after replacement of the developer storage container is stored as a correction count number, and when the detection unit detects that the remaining amount has reached a predetermined remaining amount, the count number stored in the storage unit is calculated. The image forming apparatus includes a correction unit that changes the correction count.

【0007】なお、本発明の検知手段は、光学式透過セ
ンサ、重量センサ、圧電センサ、あるいは透磁センサな
ど、現像剤収納容器の現像剤残量検知で用いられる通常
のセンサを用いればよい。
The detecting means of the present invention may use a normal sensor used for detecting the remaining amount of the developer in the developer container, such as an optical transmission sensor, a weight sensor, a piezoelectric sensor, or a magnetic permeability sensor.

【0008】[0008]

【発明の実施の形態】以下、本発明の実施例を図面を用
いて説明する。図1は、本発明の画像形成装置を示す構
成図であり、ピクセル値カウント手段2、積算記憶手段
3、現像剤収納容器4、光学的透過センサ5、所定残量
検出手段6、表示手段8とよりなる。
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an image forming apparatus according to the present invention, in which a pixel value counting unit 2, an integration storage unit 3, a developer container 4, an optical transmission sensor 5, a predetermined remaining amount detection unit 6, and a display unit 8 And

【0009】ピクセル値カウント手段2は、画像形成装
置内で画像形成処理される印字データ1のピクセル値を
カウントする手段である。なお、印字データ1は、ピク
セルと呼ばれるドットの集合で印字図形を表しているた
め、ピクセル値をカウントすることができる。
The pixel value counting means 2 is a means for counting the pixel values of the print data 1 subjected to image forming processing in the image forming apparatus. Since the print data 1 represents a print figure by a set of dots called pixels, pixel values can be counted.

【0010】積算記憶手段3は、ピクセル値カウント手
段2のカウント数を積算して記憶する手段であり、現像
剤収納容器4を新たに装着してからのカウント数を積算
して記憶するようにしている。また、光学的透過センサ
5で検知される所定残量に対応するカウント数を補正カ
ウント数として記憶している。
The accumulation storage means 3 is a means for accumulating and storing the count number of the pixel value counting means 2, and accumulates and stores the count number after the developer accommodating container 4 is newly mounted. ing. Further, a count number corresponding to a predetermined remaining amount detected by the optical transmission sensor 5 is stored as a correction count number.

【0011】現像剤収納容器4は、感光体ドラム等に像
形成させるためのトナー等を収納しており、光学的透過
センサ5は、現像剤収納容器4内の現像剤が所定残量と
なったか否かを検知するセンサであり、通常用いられる
機構で光学的透過センサを配設すればよい。なお、本実
施例では、所定残量検知手段として光学的透過センサ5
を用いたが、他のセンサを用いても良く、例えば、重量
センサ、圧電センサ、あるいは透磁センサであっても良
い。そして、光学的透過センサ5で所定残量となったこ
とを検知すると、規定残量検出手段6が積算記憶手段3
に補正信号7を送信する。
The developer storage container 4 stores toner for forming an image on a photosensitive drum or the like, and the optical transmission sensor 5 detects that the developer in the developer storage container 4 has a predetermined remaining amount. This is a sensor for detecting whether or not the optical transmission sensor is used. In this embodiment, the optical transmission sensor 5 is used as the predetermined remaining amount detecting means.
Although other sensors may be used, for example, a weight sensor, a piezoelectric sensor, or a magnetic permeability sensor may be used. When the optical transmission sensor 5 detects that the predetermined remaining amount has been reached, the prescribed remaining amount detecting means 6 outputs
The correction signal 7 is transmitted to the.

【0012】本発明では、この補正信号7の送信により
積算記憶手段3で記憶しているカウント数を予め記憶し
ている補正カウント数に置換することを特徴とし、これ
により、ピクセル値計測手段の計測誤差、記憶時あるい
は通信容量の削減に伴う端数切り捨てによる積算誤差、
現像バイアス値変更に伴う現実使用トナー量変化などに
よって、算出した現像剤残量と実際の現像剤残量とが一
致しない状態を修正することができるようになる。
The present invention is characterized in that, by transmitting the correction signal 7, the count number stored in the integration storage means 3 is replaced with a correction count number stored in advance, whereby the pixel value measurement means Measurement error, storage error or integrated error due to rounding down due to reduction of communication capacity,
It is possible to correct a state in which the calculated remaining amount of the developer does not match the actual remaining amount of the developer due to a change in the amount of the actually used toner accompanying the change in the developing bias value.

【0013】なお、光学的透過センサ5で検知する所定
残量としては、現像剤不足による印字不可状態回避(す
なわち、枯渇状態を回避)のために、5%標準原稿で1
00枚(残量がピクセル値で0.2ビリオンピクセル程
度)程度であればよく、好ましくは画像形成装置の現像
剤調達遅延時間を見越して、5%標準原稿で500枚程
度とすればよい。
The predetermined remaining amount detected by the optical transmission sensor 5 is set to 1% for a 5% standard original in order to avoid a printing impossible state due to a shortage of developer (ie, to avoid a depletion state).
It is sufficient that the number of sheets is about 00 (the remaining amount is about 0.2 virion pixels in pixel value), and preferably about 500 sheets of a 5% standard original in consideration of the delay time of the developer supply of the image forming apparatus.

【0014】表示手段8は、積算記憶手段3に記憶され
ているカウント数に基づき現像剤残量を表示する手段で
あり、画像形成装置内にLCD9を設けても良く、用紙
等に印字して表示するようにしてもよい。
The display means 8 is a means for displaying the remaining amount of the developer based on the count number stored in the accumulation storage means 3. An LCD 9 may be provided in the image forming apparatus. It may be displayed.

【0015】図2は、図1の構成による動作を示すフロ
ーチャートである。印字を開始すると(ステップ1)、
ビデオラムと呼ばれる装置上に印字データ1を作成し
(ステップ2)、ピクセル値カウント手段2でピクセル
値をカウントし(ステップ3)、積算記憶手段3にその
カウント数を記憶し(ステップ4)、表示手段8でその
カウント数に基づき残量表示する(ステップ8)。それ
に並行して、光学的透過センサ5が現像剤収納容器4の
残量検出を行っており(ステップ5)、所定残量検出手
段6が所定残量に達しているか否か判断し(ステップ
6)、達した場合には、補正信号7を積算記憶手段3に
送信してカウント数を補正カウント数に置換し(ステッ
プ7)、表示手段8でその補正カウント数に基づき残量
表示する。
FIG. 2 is a flowchart showing the operation of the configuration shown in FIG. When printing starts (step 1),
The print data 1 is created on a device called a video ram (step 2), the pixel value is counted by the pixel value counting means 2 (step 3), and the counted number is stored in the accumulation storage means 3 (step 4). The remaining amount is displayed on the display means 8 based on the counted number (step 8). At the same time, the optical transmission sensor 5 detects the remaining amount of the developer container 4 (step 5), and the predetermined remaining amount detecting means 6 determines whether or not the predetermined remaining amount has been reached (step 6). If it has reached, the correction signal 7 is transmitted to the accumulation storage means 3 to replace the count number with the correction count number (step 7), and the display means 8 displays the remaining amount based on the correction count number.

【0016】[0016]

【発明の効果】以上説明したように、本発明に係る画像
形成装置によれば、記憶手段に所定残量に対応する前記
カウント手段の現像剤収納容器交換後からのカウント数
を補正カウント数として記憶させ、検知手段が所定残量
となったことを検知すると、記憶手段に記憶されている
カウント数を補正カウント数に変更する補正手段を具え
たことにより、現像剤収納容器4の限界残量が近くなっ
た時に積算したカウント数と実際にカウントすべきカウ
ント数との差が極めて少なくなり、現像剤の枯渇状態が
ないようにすることができる。
As described above, according to the image forming apparatus of the present invention, the number of counts corresponding to the predetermined remaining amount after replacement of the developer storage container in the storage means is set as the correction count number. When the detecting means detects that the remaining amount has reached a predetermined remaining amount, the correcting means for changing the count number stored in the storing means to the corrected count number is provided. Becomes very small, the difference between the count number integrated and the count number to be actually counted becomes extremely small, and it is possible to prevent the developer from being depleted.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の画像形成装置を示す構成図である。FIG. 1 is a configuration diagram illustrating an image forming apparatus of the present invention.

【図2】本発明の画像形成装置の動作を示すフローチャ
ートである。
FIG. 2 is a flowchart illustrating an operation of the image forming apparatus of the present invention.

【符号の説明】[Explanation of symbols]

1:印字データ 2:ピクセル値カウント手段 3:積算記憶手段 4:現像剤収納容器 5:光学的透過センサ 6:所定残量検出手段 7:補正信号 8:表示手段 1: Print data 2: Pixel value counting means 3: Integration storage means 4: Developer storage container 5: Optical transmission sensor 6: Predetermined remaining amount detection means 7: Correction signal 8: Display means

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】印字データのピクセル値をカウントするカ
ウント手段と、該カウント手段の現像剤収納容器交換後
からのカウント数を積算して記憶する記憶手段と、前記
現像剤収納容器が所定残量となったか否かを検知する検
知手段と、を具えてなる画像形成装置において、 前記記憶手段に前記所定残量に対応する前記カウント手
段の現像剤収納容器交換後からのカウント数を補正カウ
ント数として記憶させ、 前記検知手段が所定残量となったことを検知すると、前
記記憶手段に記憶されているカウント数を前記補正カウ
ント数に変更する補正手段を具えたことを特徴とする画
像形成装置。
1. A count means for counting pixel values of print data, a storage means for accumulating and storing the count number of the count means after replacement of the developer storage container, and a predetermined remaining amount of the developer storage container Detecting means for detecting whether or not the count amount has become equal to the predetermined remaining amount in the storage means. An image forming apparatus comprising: a correction unit configured to change a count number stored in the storage unit to the correction count number when the detection unit detects that a predetermined remaining amount has been reached. .
JP36683799A 1999-12-24 1999-12-24 Image forming device Pending JP2001183898A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP36683799A JP2001183898A (en) 1999-12-24 1999-12-24 Image forming device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP36683799A JP2001183898A (en) 1999-12-24 1999-12-24 Image forming device

Publications (1)

Publication Number Publication Date
JP2001183898A true JP2001183898A (en) 2001-07-06

Family

ID=18487808

Family Applications (1)

Application Number Title Priority Date Filing Date
JP36683799A Pending JP2001183898A (en) 1999-12-24 1999-12-24 Image forming device

Country Status (1)

Country Link
JP (1) JP2001183898A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7965952B2 (en) 2009-03-12 2011-06-21 Ricoh Company, Ltd. Remaining amount of developer detection device, development device, process unit, and image forming apparatus
JP2012252180A (en) * 2011-06-03 2012-12-20 Kyocera Document Solutions Inc Image forming apparatus
JP2014191247A (en) * 2013-03-28 2014-10-06 Oki Data Corp Image forming apparatus
US9946204B2 (en) 2013-08-30 2018-04-17 Canon Kabushiki Kaisha Image forming apparatus, control method, and storage medium

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7965952B2 (en) 2009-03-12 2011-06-21 Ricoh Company, Ltd. Remaining amount of developer detection device, development device, process unit, and image forming apparatus
JP2012252180A (en) * 2011-06-03 2012-12-20 Kyocera Document Solutions Inc Image forming apparatus
JP2014191247A (en) * 2013-03-28 2014-10-06 Oki Data Corp Image forming apparatus
US9946204B2 (en) 2013-08-30 2018-04-17 Canon Kabushiki Kaisha Image forming apparatus, control method, and storage medium
DE102014012802B4 (en) 2013-08-30 2019-01-03 Canon Kabushiki Kaisha Image forming apparatus, control method and storage medium

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