JPS61148460A - Driving control system of laser printer - Google Patents
Driving control system of laser printerInfo
- Publication number
- JPS61148460A JPS61148460A JP59271399A JP27139984A JPS61148460A JP S61148460 A JPS61148460 A JP S61148460A JP 59271399 A JP59271399 A JP 59271399A JP 27139984 A JP27139984 A JP 27139984A JP S61148460 A JPS61148460 A JP S61148460A
- Authority
- JP
- Japan
- Prior art keywords
- photosensitive drum
- drum
- laser printer
- control part
- 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
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Combination Of More Than One Step In Electrophotography (AREA)
- Control Or Security For Electrophotography (AREA)
- Dot-Matrix Printers And Others (AREA)
- Laser Beam Printer (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、レーザプリンタの駆動制御方式に関し、特に
、装置の電源投入時の初期印字における感光ドラムの特
性安定化のための制御方式に係る。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a drive control method for a laser printer, and in particular to a control method for stabilizing the characteristics of a photosensitive drum during initial printing when the device is powered on. .
レーザプリンタ装置において使用される感光ドラムは、
外界環境に特性を左右される。The photosensitive drum used in laser printer equipment is
Its characteristics are influenced by the external environment.
外界環境のうち、特に温度、湿度の影響を受けやすく、
感光ドラムに接触する雰囲気によシ、印字特性が左右さ
れる。これは、温度、湿度の影響を受けて、感光ドラム
の表面電位が変化することに起因している。It is particularly susceptible to the effects of temperature and humidity in the external environment,
The printing characteristics are affected by the atmosphere in contact with the photosensitive drum. This is due to the fact that the surface potential of the photosensitive drum changes under the influence of temperature and humidity.
このような場合、印刷結果の定着性、濃度に影響が出る
。In such a case, the fixability and density of the print result will be affected.
かかる影響は、特に、装置が長時間停止した後、再起動
をかけた最初の印字品質において顕著である。This effect is particularly noticeable in the initial print quality when the apparatus is restarted after being stopped for a long time.
本発明においては、レーザプリンタ装置が長時間停止し
た後、再起動をかけ、定常動作に入る前の印字品質を向
とさせるための方式を提供するものである。The present invention provides a method for restarting a laser printer device after it has stopped for a long time to improve the printing quality before entering normal operation.
本発明では、装置が定常動作に入る前に、感光ドフム五
にデVプリ/トシ、その直後にクリ°−二7グして帯電
電荷を除電し、定常的な印刷のための起動に備えるいわ
ゆるウオーミングアツプをするようにしたものである。In the present invention, before the apparatus enters normal operation, the photosensitive dome 5 is de-V pre-loaded and then immediately cleaned to remove the static charge and prepare for startup for regular printing. This is a so-called warming-up.
定常動作に入る前に、あらかじめ、感光ドラムを帯電、
クリーニングするととくよ)、温度、湿度の影響をとシ
除くものである。Before starting normal operation, charge the photosensitive drum in advance.
Cleaning removes the effects of temperature and humidity.
第1図は、本発明の一5j!施例である。 FIG. 1 shows one of the features of the present invention! This is an example.
本図において、1は電源、2は印刷制御部、8は記憶部
、4は制御部、5はレーザ駆動部、6は帯!tJE圧検
出部、7はドラム駆動部、8は書き込み制御部、9は回
転制御部、10はクリーニングブラシ駆動部、11は表
示部である。In this figure, 1 is a power supply, 2 is a print control section, 8 is a storage section, 4 is a control section, 5 is a laser drive section, and 6 is a band! tJE pressure detection section, 7 is a drum drive section, 8 is a write control section, 9 is a rotation control section, 10 is a cleaning brush drive section, and 11 is a display section.
また、第2図は第1図図示の実施例を制御するときのフ
ローチャートである。Further, FIG. 2 is a flowchart when controlling the embodiment shown in FIG. 1.
第2図のフローチャートを参照し、第1図の本発明実施
例に基づいて説明する。Description will be given based on the embodiment of the present invention shown in FIG. 1 with reference to the flowchart shown in FIG.
電源1を投入後、第2図に示すプレプリントを起動する
。After turning on the power source 1, the preprint shown in FIG. 2 is activated.
これは、電源が投入されたことを制御部4で検出し、起
動をかけるものである。起動されると、制御部4によシ
、プレプリント用の記録ゲータを記憶部8から読み出し
、V−ザ駆動部に転送するとともに、V−ザ光の駆動を
行わせる。In this case, the control unit 4 detects that the power is turned on and starts the system. When activated, the control section 4 reads out the recording gate for preprint from the storage section 8, transfers it to the V-za drive section, and drives the V-za light.
同時に、制御部4よ)ドラム駆動部7に命令金与え、回
転制御部によシ感光ドラムを回転させ、*S込み制御部
8を介してプレプリント用記録データを感光ドラム上に
記録する。At the same time, the control section 4 gives a command to the drum drive section 7, causes the rotation control section to rotate the photosensitive drum, and records preprint recording data on the photosensitive drum via the *S-inclusive control section 8.
この後、感光ドラムに潜像を形成する。これは書き込み
制御部8によって実行されるが、このステップは、必ず
しも必要ではない。但し、潜像過程の良否を確認する場
合は必要である。After this, a latent image is formed on the photosensitive drum. This is performed by the write controller 8, but this step is not absolutely necessary. However, it is necessary when checking the quality of the latent image process.
次に、クリーニングブラシ駆動部lθによって帯電され
た電荷を除電する。このとき、感光ドラムの回転は、少
なくとも1回転は行うものとする。Next, the charges accumulated by the cleaning brush drive unit lθ are removed. At this time, the photosensitive drum is rotated at least once.
一方、印字濃度等は、帯電電圧によって影響を受けるか
ら、感光ドラムの帯電電位を測定し、所定電位まで達し
なければ、印字不良となる。これを検出するのが帯tw
L圧検出部6である。 ゛記憶部8には、印字が良好
になるに充分な帯電電圧が記憶されておシ、この記憶電
圧と、帯電電圧検出部6によって検出された感光ドラム
の帯電電圧を比較する。On the other hand, print density and the like are affected by the charging voltage, so if the charging potential of the photosensitive drum is measured and does not reach a predetermined potential, printing will be defective. The band tw that detects this
This is the L pressure detection section 6. ``The storage section 8 stores a charging voltage sufficient for good printing, and this stored voltage is compared with the charging voltage of the photosensitive drum detected by the charging voltage detection section 6.
この比較の結果、感光ドラムの帯電電圧が所定値に達し
ていれば、そのit定常運転に移行する。As a result of this comparison, if the charging voltage of the photosensitive drum has reached a predetermined value, the process shifts to the IT steady operation.
これに対し、感光ドラムを一定回数回転しても所定電圧
に達しない場合、制御部4よシアラーム出力を出し、表
示部11にアフーム表示する。On the other hand, if the predetermined voltage is not reached even after the photosensitive drum is rotated a certain number of times, the control section 4 outputs a sear alarm output, and the display section 11 displays an after alarm.
この機能によシ、不良印字の事前チェックが可能となる
。This function makes it possible to check for defective prints in advance.
尚、レーザプリンタ装置においては、メ砥す。Incidentally, in the case of a laser printer device, grinding is required.
制御系の−、般的自己診断を行うため、通常、電源投入
から8゛0秒〜2分間程度の時間を費す。Normally, it takes about 80 seconds to 2 minutes after the power is turned on to perform general self-diagnosis of the control system.
この時間を利用して、本発明によるプレプリント動作を
行えば、時間の有効利用となる。If this time is used to perform the preprint operation according to the present invention, it will be an effective use of time.
また、感光ドラムへのプレプリントげ−!開qに直接触
れて影響を受けやすい部分のみに施しても良く、その面
積等は可変にしてもよい@〔発明の効果〕
本発明によれば、レーザプリンタ装置が長時間停止した
後、再起動をかけた際、温度、湿度に影響されることな
く、定常印刷動作の開始時から良好な品質の印字が得ら
れる。Also, pre-print on photosensitive drums! It may be applied only to the parts that are easily affected by direct contact with the laser beam, and the area etc. may be made variable. [Effects of the Invention] According to the present invention, after the laser printer device has stopped for a long time, it can be applied again. When activated, good quality printing can be obtained from the start of regular printing operations without being affected by temperature or humidity.
第1図は、本発明の一実施例、第2図は本発明を説明す
るためのフローチャートで6る。
図において、1は電源、2は印刷制御部、8は記憶部、
4は制御部、5はレーザ駆動部、6は帯tt圧検出部、
7はドラム駆動部、8は書き込み制御部、9は回転制御
部、10はクリーニングブラシ駆動部、11は表示部で
るる。FIG. 1 is an embodiment of the present invention, and FIG. 2 is a flowchart for explaining the present invention. In the figure, 1 is a power supply, 2 is a print control unit, 8 is a storage unit,
4 is a control unit, 5 is a laser drive unit, 6 is a band tt pressure detection unit,
7 is a drum drive section, 8 is a write control section, 9 is a rotation control section, 10 is a cleaning brush drive section, and 11 is a display section.
Claims (2)
入の後、記録内容を感光する感光ドラムに、所定記録内
容を記録するとともに、該感光ドラムを少なくとも1回
転させ、該感光ドラムの帯電除去のためのクリーニング
を施した後、定常印刷動作に入ることを特徴とするレー
ザプリンタ駆動制御方式。(1) In a control method for a laser printer, after turning on the driving power, predetermined recording contents are recorded on a photosensitive drum that is exposed to light, and the photosensitive drum is rotated at least once to remove static electricity from the photosensitive drum. A laser printer drive control method characterized in that after cleaning, a steady printing operation begins.
該感光ドラムの回転数が所定回数に達しても前記被測定
帯電電位が所定電位に達しないとき、アラームを出力す
ることを特徴とする特許請求の範囲第(1)項記載のレ
ーザプリンタ駆動制御方式。(2) comprising means for measuring the charged potential of the photosensitive drum;
The laser printer drive control according to claim 1, wherein an alarm is output when the charged potential to be measured does not reach a predetermined potential even when the number of rotations of the photosensitive drum reaches a predetermined number of times. method.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP59271399A JPS61148460A (en) | 1984-12-21 | 1984-12-21 | Driving control system of laser printer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP59271399A JPS61148460A (en) | 1984-12-21 | 1984-12-21 | Driving control system of laser printer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS61148460A true JPS61148460A (en) | 1986-07-07 |
Family
ID=17499515
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP59271399A Pending JPS61148460A (en) | 1984-12-21 | 1984-12-21 | Driving control system of laser printer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS61148460A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02267570A (en) * | 1989-04-10 | 1990-11-01 | Ricoh Co Ltd | Image forming parameter control device |
JPH04126267A (en) * | 1990-09-18 | 1992-04-27 | Nippon Telegr & Teleph Corp <Ntt> | Printer |
Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55157766A (en) * | 1979-05-29 | 1980-12-08 | Toray Ind Inc | Exposing method in electrophotographic printer |
JPS56104343A (en) * | 1980-01-24 | 1981-08-20 | Canon Inc | Electrophotographic device |
JPS56128961A (en) * | 1980-03-13 | 1981-10-08 | Ricoh Co Ltd | Copying machine |
JPS578556A (en) * | 1980-06-17 | 1982-01-16 | Canon Inc | Image forming apparatus |
JPS5719775A (en) * | 1980-07-09 | 1982-02-02 | Matsushita Electric Ind Co Ltd | Electrophotographic device |
JPS5732468A (en) * | 1980-08-06 | 1982-02-22 | Canon Inc | Fomation of picture |
JPS57130060A (en) * | 1981-02-06 | 1982-08-12 | Matsushita Electric Ind Co Ltd | Electrophotographic device |
JPS57210361A (en) * | 1981-06-19 | 1982-12-23 | Ricoh Co Ltd | Recording method |
JPS57210356A (en) * | 1981-06-20 | 1982-12-23 | Ricoh Co Ltd | Recording method |
JPS5848904A (en) * | 1981-09-18 | 1983-03-23 | Matsushita Electric Ind Co Ltd | Preparation of rolled magnet |
JPS58144842A (en) * | 1983-01-19 | 1983-08-29 | Ricoh Co Ltd | Sequence control system of copying machine |
JPS5958448A (en) * | 1982-09-28 | 1984-04-04 | Canon Inc | Electrophotographic method |
-
1984
- 1984-12-21 JP JP59271399A patent/JPS61148460A/en active Pending
Patent Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55157766A (en) * | 1979-05-29 | 1980-12-08 | Toray Ind Inc | Exposing method in electrophotographic printer |
JPS56104343A (en) * | 1980-01-24 | 1981-08-20 | Canon Inc | Electrophotographic device |
JPS56128961A (en) * | 1980-03-13 | 1981-10-08 | Ricoh Co Ltd | Copying machine |
JPS578556A (en) * | 1980-06-17 | 1982-01-16 | Canon Inc | Image forming apparatus |
JPS5719775A (en) * | 1980-07-09 | 1982-02-02 | Matsushita Electric Ind Co Ltd | Electrophotographic device |
JPS5732468A (en) * | 1980-08-06 | 1982-02-22 | Canon Inc | Fomation of picture |
JPS57130060A (en) * | 1981-02-06 | 1982-08-12 | Matsushita Electric Ind Co Ltd | Electrophotographic device |
JPS57210361A (en) * | 1981-06-19 | 1982-12-23 | Ricoh Co Ltd | Recording method |
JPS57210356A (en) * | 1981-06-20 | 1982-12-23 | Ricoh Co Ltd | Recording method |
JPS5848904A (en) * | 1981-09-18 | 1983-03-23 | Matsushita Electric Ind Co Ltd | Preparation of rolled magnet |
JPS5958448A (en) * | 1982-09-28 | 1984-04-04 | Canon Inc | Electrophotographic method |
JPS58144842A (en) * | 1983-01-19 | 1983-08-29 | Ricoh Co Ltd | Sequence control system of copying machine |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02267570A (en) * | 1989-04-10 | 1990-11-01 | Ricoh Co Ltd | Image forming parameter control device |
JPH04126267A (en) * | 1990-09-18 | 1992-04-27 | Nippon Telegr & Teleph Corp <Ntt> | Printer |
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