JPS559576A - Dot image exposure device - Google Patents

Dot image exposure device

Info

Publication number
JPS559576A
JPS559576A JP8313678A JP8313678A JPS559576A JP S559576 A JPS559576 A JP S559576A JP 8313678 A JP8313678 A JP 8313678A JP 8313678 A JP8313678 A JP 8313678A JP S559576 A JPS559576 A JP S559576A
Authority
JP
Japan
Prior art keywords
dot
drum
position information
spot
images
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
JP8313678A
Other languages
Japanese (ja)
Inventor
Terubumi Honjo
Hiromichi Fukuchi
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP8313678A priority Critical patent/JPS559576A/en
Publication of JPS559576A publication Critical patent/JPS559576A/en
Pending legal-status Critical Current

Links

Landscapes

  • Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)

Abstract

PURPOSE: To obtain dot images of high speed and high resolution by performing dot formation in one picture element through one exposure scanning.
CONSTITUTION: When a density image signal 104 is inputted to a driving circuit 102, the light emitting element selection driving signal corresponding to the density level of the image signal is applied to an LED array 100 and the corresponding LED group lights up and the dot-forming projecting light 113 is direction-changed 114 thence images a dot exposure spot 120 on a film 112 plane. A drum 109 is rotated at a constant speed to obtain the position information on the spot 120 with respect to the drum rotating direction. Further, a housing 117, connecting rod 116 and substrate 101 are moved parallel to the drum surface by a motor 119 driven in correspondence to the drum revolution by way of a feed screw 118, whereby the position information of the spot 120 is obtained. The signal 104 is controlled by these two sets of the position information, whereby the dot images are subsequently exposed.
COPYRIGHT: (C)1980,JPO&Japio
JP8313678A 1978-07-07 1978-07-07 Dot image exposure device Pending JPS559576A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8313678A JPS559576A (en) 1978-07-07 1978-07-07 Dot image exposure device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8313678A JPS559576A (en) 1978-07-07 1978-07-07 Dot image exposure device

Publications (1)

Publication Number Publication Date
JPS559576A true JPS559576A (en) 1980-01-23

Family

ID=13793779

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8313678A Pending JPS559576A (en) 1978-07-07 1978-07-07 Dot image exposure device

Country Status (1)

Country Link
JP (1) JPS559576A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56162765A (en) * 1980-05-20 1981-12-14 Ricoh Co Ltd Electrophotographic copier

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49101101A (en) * 1972-12-22 1974-09-25
JPS5054215A (en) * 1973-05-09 1975-05-13

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49101101A (en) * 1972-12-22 1974-09-25
JPS5054215A (en) * 1973-05-09 1975-05-13

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56162765A (en) * 1980-05-20 1981-12-14 Ricoh Co Ltd Electrophotographic copier

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