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JPS57135177A - Dot matrix printer - Google Patents

Dot matrix printer

Info

Publication number
JPS57135177A
JPS57135177A JP56020903A JP2090381A JPS57135177A JP S57135177 A JPS57135177 A JP S57135177A JP 56020903 A JP56020903 A JP 56020903A JP 2090381 A JP2090381 A JP 2090381A JP S57135177 A JPS57135177 A JP S57135177A
Authority
JP
Japan
Prior art keywords
pattern
memory
original character
dot
printing
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
JP56020903A
Other languages
Japanese (ja)
Inventor
Masami Ujiie
Hiroshi Sakai
Takeshi Oshima
Hiromi Nakamura
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP56020903A priority Critical patent/JPS57135177A/en
Publication of JPS57135177A publication Critical patent/JPS57135177A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T3/00—Geometric image transformations in the plane of the image
    • G06T3/40—Scaling of whole images or parts thereof, e.g. expanding or contracting
    • G06T3/4007—Scaling of whole images or parts thereof, e.g. expanding or contracting based on interpolation, e.g. bilinear interpolation
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K15/00—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers
    • G06K15/02—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Dot-Matrix Printers And Others (AREA)
  • Image Processing (AREA)

Abstract

PURPOSE:To enable a higher dot density without changing the size of a character by performing interpolation on the entire character in two or more out of eight directions centered on one dot in an original character pattern. CONSTITUTION:When a pattern generated from an original character pattern generator 2 is increased in the dot density, it is transmitted to a dot density expanding device 4. An interpolation of the entire character is made in two or more out of eight directions in total centered on one dot in an original character pattern read from the original character pattern generator and then, transmitted to an expanded pattern memory 5. When the number of printing elements of a print head is shoft of the number of matrixes to be printed, after a pattern division with a printing pattern divider 6, a printing section 8 performs a printing according to the pattern stored in a scanning pattern memory 7. This method does not require the memory of enlarged patterns to have capacity enough to cover all characters corresponding to any original character pattern thereby enabling the economization of a scanning memory.
JP56020903A 1981-02-17 1981-02-17 Dot matrix printer Pending JPS57135177A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56020903A JPS57135177A (en) 1981-02-17 1981-02-17 Dot matrix printer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56020903A JPS57135177A (en) 1981-02-17 1981-02-17 Dot matrix printer

Publications (1)

Publication Number Publication Date
JPS57135177A true JPS57135177A (en) 1982-08-20

Family

ID=12040184

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56020903A Pending JPS57135177A (en) 1981-02-17 1981-02-17 Dot matrix printer

Country Status (1)

Country Link
JP (1) JPS57135177A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6027552A (en) * 1983-07-26 1985-02-12 Oki Electric Ind Co Ltd Printing system for dot printer
JPH02153761A (en) * 1988-12-07 1990-06-13 Canon Inc Recording apparatus
JPH02169269A (en) * 1988-12-22 1990-06-29 Copyer Co Ltd Image processing device
US5754188A (en) * 1988-08-25 1998-05-19 Canon Kabushiki Kaisha Data processing apparatus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6027552A (en) * 1983-07-26 1985-02-12 Oki Electric Ind Co Ltd Printing system for dot printer
JPH0457510B2 (en) * 1983-07-26 1992-09-11 Oki Electric Ind Co Ltd
US5754188A (en) * 1988-08-25 1998-05-19 Canon Kabushiki Kaisha Data processing apparatus
JPH02153761A (en) * 1988-12-07 1990-06-13 Canon Inc Recording apparatus
JPH02169269A (en) * 1988-12-22 1990-06-29 Copyer Co Ltd Image processing device

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