JPS63113657U - - Google Patents
Info
- Publication number
- JPS63113657U JPS63113657U JP579487U JP579487U JPS63113657U JP S63113657 U JPS63113657 U JP S63113657U JP 579487 U JP579487 U JP 579487U JP 579487 U JP579487 U JP 579487U JP S63113657 U JPS63113657 U JP S63113657U
- Authority
- JP
- Japan
- Prior art keywords
- image forming
- forming apparatus
- led
- correlation data
- voltage value
- 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
Links
- 230000003287 optical effect Effects 0.000 claims 2
- 108091008695 photoreceptors Proteins 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 6
Landscapes
- Dot-Matrix Printers And Others (AREA)
- Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
- Laser Beam Printer (AREA)
- Exposure Or Original Feeding In Electrophotography (AREA)
Description
第1図はこの考案の一実施例の動作を説明する
ためのフロー図である。第2図はこの考案の一実
施例を示す構造図解図である。第3図はこの実施
例の制御システムの一例を示すブロツク図である
。第4図はLEDエレメントの温度に対する発光
出力の値を示すグラフである。第5図は温度デー
タに対する印加電圧値を示すグラフである。第6
図は設定された印加電圧値を説明するための図で
ある。第7図はプリントデータおよび同期クロツ
クに対応するLEDヘツドおよびカウンタの動作
を説明するためのタイミング図である。第8図は
この考案の他の実施例の動作を説明するためのフ
ロー図である。第9図はLEDエレメントの総通
電電力量に対する発光出力の値を示すグラフであ
る。第10図は積算データに対する印加電圧値を
示すグラフである。
図において、26は感光体ドラム、28はLE
Dヘツド、76はCPU、80はメモリ、82は
I/Oポート、84はカウンタを示す。
FIG. 1 is a flow diagram for explaining the operation of an embodiment of this invention. FIG. 2 is an illustrative structural diagram showing an embodiment of this invention. FIG. 3 is a block diagram showing an example of the control system of this embodiment. FIG. 4 is a graph showing the value of light emitting output versus temperature of the LED element. FIG. 5 is a graph showing applied voltage values versus temperature data. 6th
The figure is a diagram for explaining set applied voltage values. FIG. 7 is a timing diagram for explaining the operation of the LED head and counter in response to print data and a synchronization clock. FIG. 8 is a flow diagram for explaining the operation of another embodiment of this invention. FIG. 9 is a graph showing the value of light emission output with respect to the total amount of energized power of the LED element. FIG. 10 is a graph showing applied voltage values with respect to integrated data. In the figure, 26 is a photosensitive drum, 28 is an LE
76 is a CPU, 80 is a memory, 82 is an I/O port, and 84 is a counter.
Claims (1)
があるごとに任意のLEDエレメントを選択点灯
して前記感光体に露光光を照射するためのLED
ヘツド、 前記LEDヘツドの点灯されたLEDエレメン
トの数をカウントするためのカウント手段、 前記カウント手段のカウント値に基づいて前記
LEDエレメントの光出力相関データを算出する
ための計算手段、および 前記光出力相関データに従つて前記LEDヘツ
ドの印加電圧値を制御するための電圧制御手段を
備える、像形成装置。 2 前記計算手段は、前記カウント手段のカウン
ト値と印加電圧値とによつて前記光出力相関デー
タを算出する、実用新案登録請求の範囲第1項記
載の像形成装置。 3 前記計算手段は、一定時間毎の前記カウント
値と印加電圧値とに基づいて、前記光出力相関デ
ータを計算する手段を含む、実用新案登録請求の
範囲第2項記載の像形成装置。 4 前記計算手段は、積算した前記カウント値と
印加電圧値とに基づいて、前記LEDヘツドの総
通電電力量に関連する積算データを計算する手段
を含む、実用新案登録請求の範囲第2項または第
3項記載の像形成装置。 5 前記電圧制御手段は、前記光出力相関データ
によつて前記印加電圧値を決定する手段を含む、
実用新案登録請求の範囲第1項ないし第4項のい
ずれかに記載の像形成装置。[Scope of Claim for Utility Model Registration] 1. A photoreceptor, an LED that includes a plurality of LED elements and that selectively lights up any LED element to irradiate the photoreceptor with exposure light each time there is a print request.
a counting means for counting the number of lit LED elements of the LED head; a calculation means for calculating light output correlation data of the LED elements based on a count value of the counting means; and the light output. An image forming apparatus comprising voltage control means for controlling a voltage value applied to the LED head according to correlation data. 2. The image forming apparatus according to claim 1, wherein the calculation means calculates the light output correlation data based on the count value of the counting means and the applied voltage value. 3. The image forming apparatus according to claim 2, wherein the calculation means includes means for calculating the optical output correlation data based on the count value and the applied voltage value at regular intervals. 4. The calculation means includes means for calculating integrated data related to the total amount of energized power of the LED head based on the integrated count value and applied voltage value, or The image forming apparatus according to item 3. 5. The voltage control means includes means for determining the applied voltage value based on the optical output correlation data.
An image forming apparatus according to any one of claims 1 to 4 of the utility model registration claims.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1987005794U JPH0742743Y2 (en) | 1987-01-19 | 1987-01-19 | Image forming device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1987005794U JPH0742743Y2 (en) | 1987-01-19 | 1987-01-19 | Image forming device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS63113657U true JPS63113657U (en) | 1988-07-21 |
JPH0742743Y2 JPH0742743Y2 (en) | 1995-10-04 |
Family
ID=30787708
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1987005794U Expired - Lifetime JPH0742743Y2 (en) | 1987-01-19 | 1987-01-19 | Image forming device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0742743Y2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0262560A (en) * | 1988-08-29 | 1990-03-02 | Ricoh Co Ltd | Electrophotographic image forming device |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59153135U (en) * | 1983-03-30 | 1984-10-13 | 沖電気工業株式会社 | LED drive circuit |
JPS613763A (en) * | 1984-06-18 | 1986-01-09 | Fuji Photo Film Co Ltd | Light amount corrector for image output device |
JPS62280057A (en) * | 1986-05-30 | 1987-12-04 | Matsushita Graphic Commun Syst Inc | Led array head |
-
1987
- 1987-01-19 JP JP1987005794U patent/JPH0742743Y2/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59153135U (en) * | 1983-03-30 | 1984-10-13 | 沖電気工業株式会社 | LED drive circuit |
JPS613763A (en) * | 1984-06-18 | 1986-01-09 | Fuji Photo Film Co Ltd | Light amount corrector for image output device |
JPS62280057A (en) * | 1986-05-30 | 1987-12-04 | Matsushita Graphic Commun Syst Inc | Led array head |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0262560A (en) * | 1988-08-29 | 1990-03-02 | Ricoh Co Ltd | Electrophotographic image forming device |
Also Published As
Publication number | Publication date |
---|---|
JPH0742743Y2 (en) | 1995-10-04 |
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