JPS54115254A - Image former - Google Patents

Image former

Info

Publication number
JPS54115254A
JPS54115254A JP2305278A JP2305278A JPS54115254A JP S54115254 A JPS54115254 A JP S54115254A JP 2305278 A JP2305278 A JP 2305278A JP 2305278 A JP2305278 A JP 2305278A JP S54115254 A JPS54115254 A JP S54115254A
Authority
JP
Japan
Prior art keywords
original
laser beam
densities
photoreceptor
radiated
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
JP2305278A
Other languages
Japanese (ja)
Other versions
JPS6126664B2 (en
Inventor
Susumu Sugiura
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP2305278A priority Critical patent/JPS54115254A/en
Publication of JPS54115254A publication Critical patent/JPS54115254A/en
Publication of JPS6126664B2 publication Critical patent/JPS6126664B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Dot-Matrix Printers And Others (AREA)
  • Laser Beam Printer (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)

Abstract

PURPOSE: To enable image recording of medium tone to be performed by converting the signal voltages corresponding to image densities to frequency pulses and modulating laser beam by these thereby changing the spot number to be radiated to the same position of a photoreceptor.
CONSTITUTION: The scanner part 7 constituted by a light source 3, lens system 4, filter 5, photo detecting part 6 moves in the arrow 8 direction to scan the original 1 and the analog signals corresponding to the image densities of the original 1 are converted to the pulses of the frequencies corresponding to the image densities of the original 1 by a voltage-frequency converting circuit 10. The outputs of the voltage-frequency converting circuit 10 are inputted to a monostable multivibrator circuit 11, by the output whereof a laser beam modulator 22 is driven and the laser beam thus modulated horizontally sweeps the photo receptor 27 by a rotary mirror 24. At this time, it turns out that the higher the frequencies the more the number of the spots to be radiated to the same position of the photoreceptor 27, thus the densities of medium tone appear in the recorded images.
COPYRIGHT: (C)1979,JPO&Japio
JP2305278A 1978-02-28 1978-02-28 Image former Granted JPS54115254A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2305278A JPS54115254A (en) 1978-02-28 1978-02-28 Image former

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2305278A JPS54115254A (en) 1978-02-28 1978-02-28 Image former

Publications (2)

Publication Number Publication Date
JPS54115254A true JPS54115254A (en) 1979-09-07
JPS6126664B2 JPS6126664B2 (en) 1986-06-21

Family

ID=12099664

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2305278A Granted JPS54115254A (en) 1978-02-28 1978-02-28 Image former

Country Status (1)

Country Link
JP (1) JPS54115254A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5017944A (en) * 1989-03-06 1991-05-21 Victor Company Of Japan, Ltd. Control system for information recording laser beam

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4883723A (en) * 1972-02-08 1973-11-08
JPS518949A (en) * 1974-07-10 1976-01-24 Canon Kk REEZAKIROKU SOCHI

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4883723A (en) * 1972-02-08 1973-11-08
JPS518949A (en) * 1974-07-10 1976-01-24 Canon Kk REEZAKIROKU SOCHI

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5017944A (en) * 1989-03-06 1991-05-21 Victor Company Of Japan, Ltd. Control system for information recording laser beam

Also Published As

Publication number Publication date
JPS6126664B2 (en) 1986-06-21

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