JPS6221563U - - Google Patents
Info
- Publication number
- JPS6221563U JPS6221563U JP10793385U JP10793385U JPS6221563U JP S6221563 U JPS6221563 U JP S6221563U JP 10793385 U JP10793385 U JP 10793385U JP 10793385 U JP10793385 U JP 10793385U JP S6221563 U JPS6221563 U JP S6221563U
- Authority
- JP
- Japan
- Prior art keywords
- light emitting
- light
- time
- signal
- correction
- 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
- 238000010586 diagram Methods 0.000 description 8
- 230000003321 amplification Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 108091008695 photoreceptors Proteins 0.000 description 1
Landscapes
- Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
- Dot-Matrix Printers And Others (AREA)
Description
第１図はこの考案の発光素子アレイ駆動装置の
一実施例の構成を示す線図、第２図はこの考案の
説明に供する線図、第３図はこの考案の発光素子
アレイ駆動装置の各部の信号図、第４図はこの考
案に係る説明図で、光プリンタの概略を示す斜視
図、第５図Ａは従来のＬＥＤアレイ内のＬＥＤ毎
の輝度バラツキを示す線図、第５図Ｂは従来のプ
リントヘツドのＬＥＤアレイ毎の輝度バラツキを
示す線図、第５図Ｃは従来のＬＥＤアレイの輝度
の温度特性を示す線図、第６図は従来のＬＥＤ駆
動装置の説明に供する線図、第７図は従来のＬＥ
Ｄ駆動装置の各部の信号図である。
１１１〜１１１０……ＬＥＤアレイ、１３……
電流増幅器、１５……電源、１９……シリアル画
信号、２１……第一クロツク、２３……シリアル
・パラレル変換器、２５……ラツチ回路、２７…
…ゲート回路、２９……第一カウンタ、３１……
第一デコーダ、３３……基準発光時間を定める基
準信号、３５……メモリ（ＲＡＭ）、３７……第
二カウンタ、３９……データバス、４１……第二
デコーダ、４３……第二クロツク、４５……同期
信号、４７……受光素子アレイ、４９……検出信
号、５１……増幅回路、５３……比較回路、５５
……基準電圧、５７……Ｖ／Ｆ変換器、６１……
駆動手段、６３……駆動回路、６５……受光装置
、６７……メモリ装置、７１……集束性ロツドレ
ンズアレイ、７３……感光体。
FIG. 1 is a diagram showing the configuration of an embodiment of the light emitting element array driving device of this invention, FIG. 2 is a diagram for explaining this invention, and FIG. 3 is a diagram showing various parts of the light emitting element array driving device of this invention. FIG. 4 is an explanatory diagram of this invention, which is a perspective view showing the outline of an optical printer, FIG. 5A is a line diagram showing luminance variations for each LED in a conventional LED array, and FIG. 5B 5C is a line diagram showing the brightness variation for each LED array of a conventional print head, FIG. 5C is a line diagram showing the temperature characteristics of brightness of a conventional LED array, and FIG. Figure 7 shows the conventional LE
It is a signal diagram of each part of a D drive device. 11 1 to 11 10 ... LED array, 13 ...
Current amplifier, 15...Power supply, 19...Serial image signal, 21...First clock, 23...Serial/parallel converter, 25...Latch circuit, 27...
...Gate circuit, 29...First counter, 31...
First decoder, 33...Reference signal for determining reference light emission time, 35...Memory (RAM), 37...Second counter, 39...Data bus, 41...Second decoder, 43...Second clock, 45... Synchronization signal, 47... Light receiving element array, 49... Detection signal, 51... Amplification circuit, 53... Comparison circuit, 55
...Reference voltage, 57...V/F converter, 61...
Drive means, 63... Drive circuit, 65... Light receiving device, 67... Memory device, 71... Focusing rod lens array, 73... Photoreceptor.
Claims (1)
該光量を補正するための発光補正時間を定める補
正信号を形成する受光装置と、 該補正信号を一時的に記憶し、該記憶された補
正信号の読み出し可能なメモリ装置と を具え、 前記駆動手段は、該読み出された補正信号と、
基準発光時間を定める基準信号とが供給され基準
発光時間及び発光補正時間を加算した時間で前記
各発光素子を点灯駆動する駆動回路を有して成る
ことを特徴とする発光素子アレイ駆動装置。[Claims for Utility Model Registration] A light emitting element array, a driving means for driving the light emitting elements of the array, and a correction for detecting the amount of light emitted from each of the light emitting elements and determining a light emission correction time for correcting the amount of light. a light receiving device that forms a signal; a memory device that temporarily stores the correction signal and is capable of reading out the stored correction signal;
1. A light emitting element array driving device comprising: a drive circuit that is supplied with a reference signal that determines a reference light emitting time and drives each of the light emitting elements to turn on in a time that is the sum of the reference light emitting time and the light emission correction time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10793385U JPS6221563U (en) | 1985-07-15 | 1985-07-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10793385U JPS6221563U (en) | 1985-07-15 | 1985-07-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6221563U true JPS6221563U (en) | 1987-02-09 |
Family
ID=30984664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10793385U Pending JPS6221563U (en) | 1985-07-15 | 1985-07-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6221563U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6418660A (en) * | 1987-07-14 | 1989-01-23 | Fujitsu Ltd | System for measuring emitting amount of light emitting element |
| JPH0477274A (en) * | 1990-07-19 | 1992-03-11 | Futaba Corp | Printer light source |
-
1985
- 1985-07-15 JP JP10793385U patent/JPS6221563U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6418660A (en) * | 1987-07-14 | 1989-01-23 | Fujitsu Ltd | System for measuring emitting amount of light emitting element |
| JPH0477274A (en) * | 1990-07-19 | 1992-03-11 | Futaba Corp | Printer light source |
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