JPS55126473A - Measuring device for moving pitch of platen in japanese typewriter - Google Patents

Measuring device for moving pitch of platen in japanese typewriter

Info

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
Application number
JP3410379A
Other languages
Japanese (ja)
Inventor
Yukiyasu Kimura
Kiichi Izukawa
Noboru Kato
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TOWA TYPEWRITER KK
Original Assignee
TOWA TYPEWRITER KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by TOWA TYPEWRITER KK filed Critical TOWA TYPEWRITER KK
Priority to JP3410379A priority Critical patent/JPS55126473A/en
Publication of JPS55126473A publication Critical patent/JPS55126473A/en
Pending legal-status Critical Current

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  • 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
JP3410379A 1979-03-23 1979-03-23 Measuring device for moving pitch of platen in japanese typewriter Pending JPS55126473A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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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