JPS5467432A - Recorder - Google Patents

Recorder

Info

Publication number
JPS5467432A
JPS5467432A JP13425677A JP13425677A JPS5467432A JP S5467432 A JPS5467432 A JP S5467432A JP 13425677 A JP13425677 A JP 13425677A JP 13425677 A JP13425677 A JP 13425677A JP S5467432 A JPS5467432 A JP S5467432A
Authority
JP
Japan
Prior art keywords
magnification
crt
letter
recorded
letter shape
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
JP13425677A
Other languages
Japanese (ja)
Inventor
Kiyohiko Kobayashi
Keiji Sekikawa
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 JP13425677A priority Critical patent/JPS5467432A/en
Publication of JPS5467432A publication Critical patent/JPS5467432A/en
Pending legal-status Critical Current

Links

Landscapes

  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Projection-Type Copiers In General (AREA)
  • Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)

Abstract

PURPOSE: To form an enlarged recorded letter having a good image by expanding the focal point of the electron beam of a CRT in accordance with the increase in the magnification thereby to increase the roundness of the letter shape.
CONSTITUTION: In case a code of twofold magnification is accommodated in a buffer memory 5, the operations of a CRT 1 and an auxiliary scanning drive system 13 are at the same speed as that of the operation of the same size but have the pulse frequencies C, S and l reduced to 1/2. The printing signals of one bit of a letter pattern memory are rcorded over two picture elements of the horizontal scanning of the CRT 1 to have a towofold magnification in length and width. According to this magnification, the focal point of the electron beam is enlarged in an intermediate manner so that the reduction in brightness is compensated by the fact that the input analog signals to a video amplifier 9 are raised to an intermediate level. As a result, a roundness apperars in the intrinsic discontinuous points of the recorded letter shape so that the envelope of the recorded picture element becomes gentle to form a letter shape having a good image and so that the printing density is maintained constant irrespective of the magnification.
COPYRIGHT: (C)1979,JPO&Japio
JP13425677A 1977-11-09 1977-11-09 Recorder Pending JPS5467432A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13425677A JPS5467432A (en) 1977-11-09 1977-11-09 Recorder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13425677A JPS5467432A (en) 1977-11-09 1977-11-09 Recorder

Publications (1)

Publication Number Publication Date
JPS5467432A true JPS5467432A (en) 1979-05-30

Family

ID=15124037

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13425677A Pending JPS5467432A (en) 1977-11-09 1977-11-09 Recorder

Country Status (1)

Country Link
JP (1) JPS5467432A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0473389A2 (en) * 1990-08-29 1992-03-04 Canon Kabushiki Kaisha Image processing method and apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0473389A2 (en) * 1990-08-29 1992-03-04 Canon Kabushiki Kaisha Image processing method and apparatus
EP0473389B1 (en) * 1990-08-29 1997-06-18 Canon Kabushiki Kaisha Image processing method and apparatus

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