JPS57173857A - Optical beam recording device - Google Patents

Optical beam recording device

Info

Publication number
JPS57173857A
JPS57173857A JP6045181A JP6045181A JPS57173857A JP S57173857 A JPS57173857 A JP S57173857A JP 6045181 A JP6045181 A JP 6045181A JP 6045181 A JP6045181 A JP 6045181A JP S57173857 A JPS57173857 A JP S57173857A
Authority
JP
Japan
Prior art keywords
light source
image forming
collimator lens
image
lighted
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
JP6045181A
Other languages
Japanese (ja)
Inventor
Takashi Kitamura
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 JP6045181A priority Critical patent/JPS57173857A/en
Priority to US06/360,687 priority patent/US4476474A/en
Priority to FR8205643A priority patent/FR2503042B1/en
Priority to DE19823212194 priority patent/DE3212194A1/en
Publication of JPS57173857A publication Critical patent/JPS57173857A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To prevent a picture from becoming thin in a system by which a nonexposure part is image-developed, by varying size of an image forming spot diameter on a recording medium of an optical beam in accordance with size of an area to be image-developed. CONSTITUTION:An optical beam from a laser array 10 is deflected and scanned by an optical deflector 12 through a collimator lens 11, and its image is formed on a photosensitive drum 1 through an image forming lens 13. The laser array 10 is inclined against the optical axis of the collimator lens 11A and is installed so that a light source 10A comes to a focal position of the collimator lens 11, thererfore, a light source 10B is slightly shifted from a focal position of the collimator lens 11B, and image forming spots 15A, 15B on the photosensitive drum 1 show intensity distributions 16A, 16B, respectively. The diameter of the image forming spot becomes smaller (D1) in case when only the light source 10A has been lighted than the case when both the light sources 10A, 10B have been lighted, and the thin lines being in parallel with the main scanning direction can be made somewhat thick by inhibiting that the light source 10B is lighted.
JP6045181A 1981-04-02 1981-04-20 Optical beam recording device Pending JPS57173857A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP6045181A JPS57173857A (en) 1981-04-20 1981-04-20 Optical beam recording device
US06/360,687 US4476474A (en) 1981-04-02 1982-03-22 Dot recording apparatus
FR8205643A FR2503042B1 (en) 1981-04-02 1982-04-01 POINT RECORDING APPARATUS
DE19823212194 DE3212194A1 (en) 1981-04-02 1982-04-01 POINT RECORDING DEVICE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6045181A JPS57173857A (en) 1981-04-20 1981-04-20 Optical beam recording device

Publications (1)

Publication Number Publication Date
JPS57173857A true JPS57173857A (en) 1982-10-26

Family

ID=13142644

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6045181A Pending JPS57173857A (en) 1981-04-02 1981-04-20 Optical beam recording device

Country Status (1)

Country Link
JP (1) JPS57173857A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6180121A (en) * 1984-09-27 1986-04-23 Fuji Xerox Co Ltd Optical beam recorder
US6340982B1 (en) 1999-10-15 2002-01-22 Fujitsu Limited Image forming apparatus and exposure device thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6180121A (en) * 1984-09-27 1986-04-23 Fuji Xerox Co Ltd Optical beam recorder
JPH0612383B2 (en) * 1984-09-27 1994-02-16 富士ゼロックス株式会社 Optical beam recorder
US6340982B1 (en) 1999-10-15 2002-01-22 Fujitsu Limited Image forming apparatus and exposure device thereof

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