JPS6428535A - Jitter measurement for polygon scanner - Google Patents

Jitter measurement for polygon scanner

Info

Publication number
JPS6428535A
JPS6428535A JP18447587A JP18447587A JPS6428535A JP S6428535 A JPS6428535 A JP S6428535A JP 18447587 A JP18447587 A JP 18447587A JP 18447587 A JP18447587 A JP 18447587A JP S6428535 A JPS6428535 A JP S6428535A
Authority
JP
Japan
Prior art keywords
pulse
time difference
voltage
converted
scanner
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
JP18447587A
Other languages
Japanese (ja)
Inventor
Katsunori Tanaka
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.)
ACT ELECTRONIC
AKUTO DENSHI KK
Original Assignee
ACT ELECTRONIC
AKUTO DENSHI 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 ACT ELECTRONIC, AKUTO DENSHI KK filed Critical ACT ELECTRONIC
Priority to JP18447587A priority Critical patent/JPS6428535A/en
Publication of JPS6428535A publication Critical patent/JPS6428535A/en
Pending legal-status Critical Current

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
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/435—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material
    • B41J2/47—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material using the combination of scanning and modulation of light
    • B41J2/471—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material using the combination of scanning and modulation of light using dot sequential main scanning by means of a light deflector, e.g. a rotating polygonal mirror

Landscapes

  • Testing Of Optical Devices Or Fibers (AREA)
  • Mechanical Optical Scanning Systems (AREA)
  • Photoreceptors In Electrophotography (AREA)
  • Laser Beam Printer (AREA)

Abstract

PURPOSE:To measure a jitter component of a scanner itself, by a method wherein reflected light with a time difference is received from a scanner to obtain a pulse with the width corresponding to the time difference and the pulse width is converted into a voltage to perform a frequency analysis of changes in the voltage. CONSTITUTION:Laser light L from a laser 3 is made to irradiate mirror surfaces 2a, 2b... of a polygon mirror surface 2 of a rotating polygon scanner 1. Reflected lights with a time difference from two different points of the mirror surfaces 2a, 2b... are received with light receiving elements 4 and 4 and converted into electricity to be supplied to waveform shaping circuits 5 and 5. A pulse signal with the waveform thereof shaped is inputted into a pulse conversion circuit 15 to obtain a pulse with the width corresponding to a pulse interval of both the pulse signals. This pulse is converted with a time difference-voltage conversion circuit 7 into a voltage proportional to the pulse width. The voltage proportional to the time difference is supplied to a frequency analyzer 10 passing through a capacitor 8 and an amplifier 9 thereby enabling picking-up of a jitter component alone attributed to the polygon scanner itself with the analyzer 10.
JP18447587A 1987-07-23 1987-07-23 Jitter measurement for polygon scanner Pending JPS6428535A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18447587A JPS6428535A (en) 1987-07-23 1987-07-23 Jitter measurement for polygon scanner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18447587A JPS6428535A (en) 1987-07-23 1987-07-23 Jitter measurement for polygon scanner

Publications (1)

Publication Number Publication Date
JPS6428535A true JPS6428535A (en) 1989-01-31

Family

ID=16153816

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18447587A Pending JPS6428535A (en) 1987-07-23 1987-07-23 Jitter measurement for polygon scanner

Country Status (1)

Country Link
JP (1) JPS6428535A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6937372B2 (en) 2001-07-11 2005-08-30 Canon Kabushiki Kaisha Light beam deflecting apparatus, image forming apparatus utilizing the same and drive method therefor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6937372B2 (en) 2001-07-11 2005-08-30 Canon Kabushiki Kaisha Light beam deflecting apparatus, image forming apparatus utilizing the same and drive method therefor

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