JPH0448536U - - Google Patents
Info
- Publication number
- JPH0448536U JPH0448536U JP9202990U JP9202990U JPH0448536U JP H0448536 U JPH0448536 U JP H0448536U JP 9202990 U JP9202990 U JP 9202990U JP 9202990 U JP9202990 U JP 9202990U JP H0448536 U JPH0448536 U JP H0448536U
- Authority
- JP
- Japan
- Prior art keywords
- led
- printer
- elements
- diagram showing
- array
- 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
Landscapes
- Dot-Matrix Printers And Others (AREA)
- Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
- Exposure Or Original Feeding In Electrophotography (AREA)
- Optical Systems Of Projection Type Copiers (AREA)
Description
第１図は本考案の一実施例のＬＤＥプリンタに
おけるＬＥＤドライバ回路を示す構成図、第２図
は従来のＬＥＤプリンタの主要部を示す構成図、
第３図は従来のＬＥＤプリンタにおけるＬＥＤド
ライバ回路を示す構成図、第４図はＬＥＤプリン
タにおける感光材料への露光の様子を示す図、第
５図ａはＬＥＤ素子の配列方向に対応した濃度の
山と谷を示す図、第５図ｂは濃度の山と谷の平均
値にばらつきがある場合を示す図、第６図は空間
周波数と濃度に対して濃度むらが視認されるか否
かを示す図である。
１……データ線、２……ストローブ信号線、４
……ＮＡＮＤ回路、５……ＦＥＴ、６……ＬＥＤ
素子、７……直流電源。
FIG. 1 is a block diagram showing an LED driver circuit in an LDE printer according to an embodiment of the present invention, and FIG. 2 is a block diagram showing the main parts of a conventional LED printer.
Fig. 3 is a block diagram showing the LED driver circuit in a conventional LED printer, Fig. 4 is a diagram showing how the photosensitive material is exposed to light in the LED printer, and Fig. 5a shows the density distribution corresponding to the arrangement direction of the LED elements. Figure 5b is a diagram showing peaks and valleys. Figure 5b is a diagram showing a case where there is variation in the average value of density peaks and valleys. Figure 6 is a diagram showing whether density unevenness is visible with respect to spatial frequency and density. FIG. 1...Data line, 2...Strobe signal line, 4
...NAND circuit, 5...FET, 6...LED
Element, 7...DC power supply.
Claims (1)
ＥＤアレイを光源とするＬＥＤプリンタにおいて
、前記ＬＥＤ素子を発光させるための一つの入力
信号によつて連続配置の２又はそれ以上のＬＥＤ
素子が同時に駆動されるＬＥＤアレイを具備する
ことを特徴とするＬＥＤプリンタ。 L with multiple LED elements arranged in a straight line at high density
In an LED printer using an ED array as a light source, two or more LEDs arranged in series are activated by one input signal to cause the LED elements to emit light.
An LED printer comprising an LED array whose elements are driven simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9202990U JPH0448536U (en) | 1990-08-31 | 1990-08-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9202990U JPH0448536U (en) | 1990-08-31 | 1990-08-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0448536U true JPH0448536U (en) | 1992-04-24 |
Family
ID=31828180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9202990U Pending JPH0448536U (en) | 1990-08-31 | 1990-08-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0448536U (en) |
-
1990
- 1990-08-31 JP JP9202990U patent/JPH0448536U/ja active Pending
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