JPS54135553A - Laser recorder - Google Patents

Laser recorder

Info

Publication number
JPS54135553A
JPS54135553A JP4360378A JP4360378A JPS54135553A JP S54135553 A JPS54135553 A JP S54135553A JP 4360378 A JP4360378 A JP 4360378A JP 4360378 A JP4360378 A JP 4360378A JP S54135553 A JPS54135553 A JP S54135553A
Authority
JP
Japan
Prior art keywords
frequency
current
driving signal
outputted
inputted
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.)
Granted
Application number
JP4360378A
Other languages
Japanese (ja)
Other versions
JPS6224768B2 (en
Inventor
Hideo Segawa
Masaaki Mori
Iwao Hamaguchi
Michio Umezawa
Koichi Sakurai
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.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP4360378A priority Critical patent/JPS54135553A/en
Publication of JPS54135553A publication Critical patent/JPS54135553A/en
Publication of JPS6224768B2 publication Critical patent/JPS6224768B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Dot-Matrix Printers And Others (AREA)
  • Laser Beam Printer (AREA)
  • Mechanical Optical Scanning Systems (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Facsimile Scanning Arrangements (AREA)

Abstract

PURPOSE:To obviate the appearance of scanning lines on images even with solid images and the like and to improve the quality by so arranging the recorder that the frequency of the driving signal being inputted to an acoustooptic light modulator is periodically changed within a fixed range centering at the set frequency of the driving signal. CONSTITUTION:The current of frequency fM outputted from an external oscillator 20 is superposed to the current of the frequency f outputted from a voltage control variable frequency generator (VCO)19, after which it is modulated by the picture signal from a picture signal generator 18 in a mixer 21 and is then inputted as driving signal to an acousto-optic light modulator 8. The foregoing superposed current periodically changes with the frequency f as a center and this causes the primary light L1 to deviate at the frequency fM about the deflection angle theta determined by the frequency f. If the direction of this deviation is matched to the sub-scanning direction X-X, it turns out that the scanning line deviates finely, whereby the uneven density between the scanning lines are eliminated.
JP4360378A 1978-04-12 1978-04-12 Laser recorder Granted JPS54135553A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4360378A JPS54135553A (en) 1978-04-12 1978-04-12 Laser recorder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4360378A JPS54135553A (en) 1978-04-12 1978-04-12 Laser recorder

Publications (2)

Publication Number Publication Date
JPS54135553A true JPS54135553A (en) 1979-10-20
JPS6224768B2 JPS6224768B2 (en) 1987-05-29

Family

ID=12668389

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4360378A Granted JPS54135553A (en) 1978-04-12 1978-04-12 Laser recorder

Country Status (1)

Country Link
JP (1) JPS54135553A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5895364A (en) * 1981-11-02 1983-06-06 インタ−ナショナル　ビジネス　マシ−ンズ　コ−ポレ−ション Scan light beam image formation apparatus
JP2016178305A (en) * 2015-03-20 2016-10-06 ウルトラテック インク Systems and methods for reducing pulsed laser beam profile non-uniformity for laser annealing

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5028266A (en) * 1973-07-11 1975-03-22
JPS5256944A (en) * 1975-11-06 1977-05-10 Canon Inc Device for correcting position of beam
JPS5349501A (en) * 1976-10-14 1978-05-06 Dainippon Screen Mfg Halfftone image scan recording method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5028266A (en) * 1973-07-11 1975-03-22
JPS5256944A (en) * 1975-11-06 1977-05-10 Canon Inc Device for correcting position of beam
JPS5349501A (en) * 1976-10-14 1978-05-06 Dainippon Screen Mfg Halfftone image scan recording method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5895364A (en) * 1981-11-02 1983-06-06 インタ−ナショナル　ビジネス　マシ−ンズ　コ−ポレ−ション Scan light beam image formation apparatus
JPH0428105B2 (en) * 1981-11-02 1992-05-13 Intaanashonaru Bijinesu Mashiinzu Corp
JP2016178305A (en) * 2015-03-20 2016-10-06 ウルトラテック インク Systems and methods for reducing pulsed laser beam profile non-uniformity for laser annealing

Also Published As

Publication number Publication date
JPS6224768B2 (en) 1987-05-29

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