JPS59209895A - Printing position controlling system - Google Patents
Printing position controlling systemInfo
- Publication number
- JPS59209895A JPS59209895A JP8559983A JP8559983A JPS59209895A JP S59209895 A JPS59209895 A JP S59209895A JP 8559983 A JP8559983 A JP 8559983A JP 8559983 A JP8559983 A JP 8559983A JP S59209895 A JPS59209895 A JP S59209895A
- Authority
- JP
- Japan
- Prior art keywords
- slit
- printing position
- multivibrator
- output
- pulse output
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J19/00—Character- or line-spacing mechanisms
- B41J19/18—Character-spacing or back-spacing mechanisms; Carriage return or release devices therefor
- B41J19/20—Positive-feed character-spacing mechanisms
- B41J19/202—Drive control means for carriage movement
Landscapes
- Character Spaces And Line Spaces In Printers (AREA)
Abstract
Description
【発明の詳細な説明】
斑血公■
本発明は、フォトセンサで一連のスリット位置を読み取
り、印字位置情報を得るようにした印字位置制御方式に
関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a print position control method in which print position information is obtained by reading a series of slit positions using a photo sensor.
【釆且遣
従来の印字位置制御力式においては、第１図（Ａ）に示
すような平板のスリットＳ（円板のもので良い）に沿っ
て、第２図に示すようなフォトセンサ１を移動させ、ス
リットを読み取って印字位置を制御する場合に、第１図
（Ａ）にＰにて示す如くｌスリットに対し、１つの検出
信号を得て、これを１つの位置信号としていた。しかし
ながら、このような印字位置制御方式では、現在のよう
に印字ピッチが小さくなり、ドツト間隔がせまくなって
くると、印字位置検出のためのスリットの間隔もせまく
する必要があり、製造士限界があった。[In the conventional printing position control force type, the photosensor 1 as shown in FIG. When the printing position is controlled by moving the slit and reading the slit, one detection signal is obtained for each slit, as shown by P in FIG. 1(A), and this is used as one position signal. However, with this type of print position control method, as the print pitch becomes smaller and the dot spacing becomes narrower, it is necessary to narrow the spacing between the slits for detecting the print position, and the manufacturer's limit is reached. there were.
ｌ〕的
本発明は斯かる事情に鑑みてなされたもので、１つのス
リットから２つの印字位置信号を得て高精度の印字位置
制御を可能にすると共に、スリットの製造コスＩ・を安
くすることを目的とする。l] The present invention was made in view of the above circumstances, and enables highly accurate printing position control by obtaining two printing position signals from one slit, and also reduces the manufacturing cost of the slit. The purpose is to
佐−−１
本発明の構成について、以下、実施例に基づき説明する
。S-1 The configuration of the present invention will be described below based on examples.
第１図（Ｂ）は本発明におけるスリット位置検出方式を
示すもので、１つのスリットの始端、及び終端を検出し
て２つの印字位置信号を得るようにしたことを特徴とし
ている。FIG. 1(B) shows a slit position detection method according to the present invention, which is characterized in that the starting end and ending end of one slit are detected to obtain two print position signals.
第３図は本発明の位置信号検出回路の実施例を示す図で
、フォトセンサｌは発光ダイオード２と、ベースオープ
ンのトランジスタ３から成り、第４図（Ｄ）に示すよう
なスリット幅に等しい幅のパルス出力を生ずる。このパ
ルス出力をＴＴＬのモノマルチ４に加え、パルス出力の
立」−リ（スリットの始端に対応）と＼ｊ下り（スリッ
トの終端に対応）を検出する。この立」−りは、モノマ
ルチ４のＡ入力で検出し、立ＦりはＢ入力で検出し、そ
れぞれモノマルチ４をＩ・リガーする。モノマルチ４の
出力Ｑは抵抗ＲとコンデンサＣにより、そのパルス幅が
ＴｗがＴｗ＝０．４５ＣＲで決定される（第４図（Ｑ）
）。この出力Ｑを印字位置情報として利用すれば、１ス
リツトから２つの印字位置情報が得られる。Fig. 3 is a diagram showing an embodiment of the position signal detection circuit of the present invention, in which the photosensor l consists of a light emitting diode 2 and a transistor 3 with an open base, and is equal to the slit width as shown in Fig. 4 (D). produces a pulse output of width. This pulse output is added to the TTL monomulti 4, and the rising edge of the pulse output (corresponding to the starting edge of the slit) and the falling edge (corresponding to the ending edge of the slit) are detected. This rising is detected by the A input of the monomulti 4, and the rising F is detected by the B input, and the mono multi 4 is I-rigged. The output Q of the monomulti 4 is determined by the resistor R and capacitor C, and its pulse width Tw is determined by Tw = 0.45CR (Fig. 4 (Q)
). If this output Q is used as printing position information, two pieces of printing position information can be obtained from one slit.
東−一」
以上のように本発明によれば、従来の文字制御方式と同
数のスリットの場合、２倍の印字位置情報がキＪＩられ
るので高精度の印字位置制御ができると共に、従来方式
のスリット数の半分で同じ精度の位置制御ができるため
、スリットを安価に製造できる。なお、平面形スリット
でなく、円板形スリットでも同様であることは言うまで
もない。As described above, according to the present invention, when the number of slits is the same as in the conventional character control method, twice as much printing position information is recorded, making it possible to control the printing position with high precision, and to improve the printing position compared to the conventional method. Since the same precision of position control can be achieved with half the number of slits, the slits can be manufactured at a lower cost. It goes without saying that the same applies to not only the planar slit but also the disc-shaped slit.
第１図（Ａ）は従来の印字位置検出方式を示す図、第１
図（Ｂ）は本発明による印字位置検出方式を示す図、第
２図はフォトセンサとスリットの位置関係を示す図、第
３図は本発明による印字位置検出回路の一実施例を示す
図、第４図は波形図である。
Ｓ・・・スリット、ｌ・・・フォトセンサ、２・・・発
光素子、３・・・受光素子、４・・・モノマルチ。Figure 1 (A) is a diagram showing the conventional print position detection method.
Figure (B) is a diagram showing a print position detection method according to the present invention, Figure 2 is a diagram showing the positional relationship between a photosensor and a slit, and Figure 3 is a diagram showing an embodiment of a print position detection circuit according to the present invention. FIG. 4 is a waveform diagram. S...slit, l...photo sensor, 2...light emitting element, 3...light receiving element, 4...mono multi.
Claims (1)
出し、１つのスリン（・から２つの印字位置情報を得る
ようにしたことを特徴とする印字位置制御方式。A printing position control method characterized in that the starting and ending ends of each of a series of slits are detected by a photosensor, and two pieces of printing position information are obtained from one slit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8559983A JPS59209895A (en) | 1983-05-16 | 1983-05-16 | Printing position controlling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8559983A JPS59209895A (en) | 1983-05-16 | 1983-05-16 | Printing position controlling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59209895A true JPS59209895A (en) | 1984-11-28 |
Family
ID=13863284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8559983A Pending JPS59209895A (en) | 1983-05-16 | 1983-05-16 | Printing position controlling system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59209895A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4778289A (en) * | 1985-04-22 | 1988-10-18 | Ing. C. Olivetti & C., S.P.A. | Rotary character-carrying member and selector device therefor for a print unit in typewriters |
| EP0372844A2 (en) * | 1988-12-02 | 1990-06-13 | Ncr International Inc. | A control system for a printer |
| US5074690A (en) * | 1988-12-02 | 1991-12-24 | Ncr Corporation | Print head carriage homing system |
| US6102519A (en) * | 1997-02-14 | 2000-08-15 | Brother Kogyo Kabushiki Kaisha | Recording head position detecting device |
-
1983
- 1983-05-16 JP JP8559983A patent/JPS59209895A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4778289A (en) * | 1985-04-22 | 1988-10-18 | Ing. C. Olivetti & C., S.P.A. | Rotary character-carrying member and selector device therefor for a print unit in typewriters |
| EP0372844A2 (en) * | 1988-12-02 | 1990-06-13 | Ncr International Inc. | A control system for a printer |
| US5074690A (en) * | 1988-12-02 | 1991-12-24 | Ncr Corporation | Print head carriage homing system |
| US6102519A (en) * | 1997-02-14 | 2000-08-15 | Brother Kogyo Kabushiki Kaisha | Recording head position detecting device |
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