JPH0268139U - - Google Patents
Info
- Publication number
- JPH0268139U JPH0268139U JP14659588U JP14659588U JPH0268139U JP H0268139 U JPH0268139 U JP H0268139U JP 14659588 U JP14659588 U JP 14659588U JP 14659588 U JP14659588 U JP 14659588U JP H0268139 U JPH0268139 U JP H0268139U
- Authority
- JP
- Japan
- Prior art keywords
- white line
- line information
- signal
- printing
- pixels
- 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
- 230000005856 abnormality Effects 0.000 claims description 5
- 230000002159 abnormal effect Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 2
- 230000001360 synchronised effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
Landscapes
- Accessory Devices And Overall Control Thereof (AREA)
- Dot-Matrix Printers And Others (AREA)
- Laser Beam Printer (AREA)
- Exposure Or Original Feeding In Electrophotography (AREA)
- Facsimiles In General (AREA)
Description
第１図は本考案の印字用画素信号異常検出装置
の一実施例を示すブロツク図、第２図は本考案の
印字用画素信号異常検出装置の動作を示すタイミ
ング図、第３図は異常信号発生の判断を示す流れ
図、第４図は従来の印字用画素信号の異常検出の
タイミングを模式的に示した図である。
１……カウンタ、２……判断部（異常信号発生
手段）、３……最大画素数決定部（画素数決定手
段）、４……記憶部（記憶手段）、５……ホワイ
トライン情報有無決定部（ホワイトライン情報有
無決定手段）。
Fig. 1 is a block diagram showing an embodiment of the printing pixel signal abnormality detecting device of the present invention, Fig. 2 is a timing diagram showing the operation of the printing pixel signal abnormality detecting device of the present invention, and Fig. 3 shows the abnormal signal. FIG. 4 is a flowchart showing the determination of occurrence, and is a diagram schematically showing the timing of conventional abnormality detection of printing pixel signals. 1... Counter, 2... Judgment section (abnormal signal generation means), 3... Maximum pixel number determining section (pixel number determining means), 4... Storage section (storage means), 5... White line information presence/absence determination section (means for determining presence/absence of white line information).
Claims (1)
合の最大画素数を決定する手段と、 この決定手段で決定された最大画素数を、同期
クロツクにのせられて出力する印字用画素信号の
オン信号時の画素数の最大値として登録しておく
記憶手段と、 外部から到来するホワイトライン情報を受け、
ホワイトライン情報が存在する場合に存在信号を
出力し、存在しない場合に不存在信号を出力する
ホワイトライン情報有無決定手段と、 印字用画素信号のオン信号時の画素数を計数す
るカウンタと、 このカウンタの計数値が前記印字用画素信号の
オン信号時の画素数の最大値より大きい場合、若
しくは前記ホワイトライン情報有無決定手段の出
力がホワイトライン情報の存在信号であり且つ前
記カウンタの計数値が存在する場合、または前記
ホワイトライン情報が不存在信号であり且つ前記
カウンタの計数値がゼロの場合の何れかの場合に
は、印字用画素信号の異常を表わす異常信号を発
生する異常信号発生手段 とを具備したことを特徴とする印字用画素信号
異常検出装置。[Claims for Utility Model Registration] Means for determining the maximum number of pixels when all predetermined printing areas of printing paper are printed; and outputting the maximum number of pixels determined by this determining means on a synchronous clock. A memory means that registers the maximum number of pixels when the printing pixel signal is turned on, and a storage means that receives white line information coming from the outside.
a white line information presence/absence determining means that outputs a presence signal when white line information exists and outputs an absence signal when white line information does not exist; a counter that counts the number of pixels when a printing pixel signal is on; If the count value of the counter is larger than the maximum value of the number of pixels when the printing pixel signal is on, or if the output of the white line information presence/absence determining means is a white line information presence signal and the count value of the counter is Abnormal signal generating means for generating an abnormal signal representing an abnormality of the printing pixel signal when the white line information is present, or when the white line information is an absence signal and the count value of the counter is zero; A pixel signal abnormality detection device for printing, characterized by comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14659588U JPH0268139U (en) | 1988-11-11 | 1988-11-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14659588U JPH0268139U (en) | 1988-11-11 | 1988-11-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0268139U true JPH0268139U (en) | 1990-05-23 |
Family
ID=31416231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14659588U Pending JPH0268139U (en) | 1988-11-11 | 1988-11-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0268139U (en) |
-
1988
- 1988-11-11 JP JP14659588U patent/JPH0268139U/ja active Pending
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