JPS55126473A - Measuring device for moving pitch of platen in japanese typewriter - Google Patents
Measuring device for moving pitch of platen in japanese typewriterInfo
- Publication number
- JPS55126473A JPS55126473A JP3410379A JP3410379A JPS55126473A JP S55126473 A JPS55126473 A JP S55126473A JP 3410379 A JP3410379 A JP 3410379A JP 3410379 A JP3410379 A JP 3410379A JP S55126473 A JPS55126473 A JP S55126473A
- Authority
- JP
- Japan
- Prior art keywords
- platen
- encoder
- pitches
- moving
- horizontal moving
- 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
- Accessory Devices And Overall Control Thereof (AREA)
Abstract
PURPOSE: To facilitate layout work through correct measurement of moving pitches of a platen by indicating the quantity of vertical and horizontal moving of the platen as a figure corresponding to a moving pitch.
CONSTITUTION: A rotary encoder 8 is rotated by the horizontal moving of a platen 1. The division of the encoder 8 is changed over by four, for instance, in relation to one pitch of horizontal moving of the platen, while the interval between transmissive-type photo-sensors 9 and 9' has a distance of three fourth of one dividion of the encoder 8. Accordingly, the output waveforms of both sensors 9 and 9' are shifted by one fourty of wave length to each other. Given that one line has two hundred and forth pitches and that printing is made with twelve pitches, twenty-one charac-ters are to be printed in total. When one character is printed and the platen is moved by twelve pitches to the left, the output cf of a phase discrimination circuit 22 by which a counter 26 discriminates the direction of rotation of the encoder 8 is applied to a substraction input and the subtraction is made by forty-eights, thereby the figure indicated on an indicator 27 being subtracted from nine hundred and sixty by forty-eights. This is applied for vertical feeding as well.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3410379A JPS55126473A (en) | 1979-03-23 | 1979-03-23 | Measuring device for moving pitch of platen in japanese typewriter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3410379A JPS55126473A (en) | 1979-03-23 | 1979-03-23 | Measuring device for moving pitch of platen in japanese typewriter |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55126473A true JPS55126473A (en) | 1980-09-30 |
Family
ID=12404932
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3410379A Pending JPS55126473A (en) | 1979-03-23 | 1979-03-23 | Measuring device for moving pitch of platen in japanese typewriter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55126473A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4615631A (en) * | 1980-10-31 | 1986-10-07 | Canon Kabushiki Kaisha | Printing apparatus with means for indicating the selected printing pitch and paper advancing pitch |
-
1979
- 1979-03-23 JP JP3410379A patent/JPS55126473A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4615631A (en) * | 1980-10-31 | 1986-10-07 | Canon Kabushiki Kaisha | Printing apparatus with means for indicating the selected printing pitch and paper advancing pitch |
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