JPS56142085A - Print row detection method - Google Patents

Print row detection method

Info

Publication number
JPS56142085A
JPS56142085A JP4647280A JP4647280A JPS56142085A JP S56142085 A JPS56142085 A JP S56142085A JP 4647280 A JP4647280 A JP 4647280A JP 4647280 A JP4647280 A JP 4647280A JP S56142085 A JPS56142085 A JP S56142085A
Authority
JP
Japan
Prior art keywords
picture elements
row
prints
reference value
print
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
JP4647280A
Other languages
Japanese (ja)
Other versions
JPH0224678B2 (en
Inventor
Yoshihiro Numazawa
Kazumasa Moriya
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP4647280A priority Critical patent/JPS56142085A/en
Publication of JPS56142085A publication Critical patent/JPS56142085A/en
Publication of JPH0224678B2 publication Critical patent/JPH0224678B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To provide the captioned method which scans one line after dividing it into plural pieces and compares the number of picture elements in a region including a split region adjacent to the preceding row with the number of picture elements in a central region, and surely detects a print line even if a print position is deviated in a row direction.
CONSTITUTION: One line is divided into plural pieces and scanned by means of an optical reading element. Then the number of picture elements in a region including a split region adjacent to the (N-1)th row and a reference value A (the minimum number of picture elements which may be judged as involving prints) are compared to judge whether there are prints in the N-th row. The number of picture elements in the central region of the N-th row and a reference value B (the maximum number of picture elements when a stain is detected) are compared. Thus a judgement "prints exist" of the afore-mentioned judgement becomes valid only when the number of picture elements in the central region exceeds the reference value B. In this way, row skip or double print can be prevented.
COPYRIGHT: (C)1981,JPO&Japio
JP4647280A 1980-04-09 1980-04-09 Print row detection method Granted JPS56142085A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4647280A JPS56142085A (en) 1980-04-09 1980-04-09 Print row detection method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4647280A JPS56142085A (en) 1980-04-09 1980-04-09 Print row detection method

Publications (2)

Publication Number Publication Date
JPS56142085A true JPS56142085A (en) 1981-11-06
JPH0224678B2 JPH0224678B2 (en) 1990-05-30

Family

ID=12748122

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4647280A Granted JPS56142085A (en) 1980-04-09 1980-04-09 Print row detection method

Country Status (1)

Country Link
JP (1) JPS56142085A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150001605A (en) 2013-06-27 2015-01-06 코린주식회사 Information display body and connection member used in the information display body

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5239318A (en) * 1975-09-25 1977-03-26 Hitachi Ltd Printer equipped with line detecting mechanism

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5239318A (en) * 1975-09-25 1977-03-26 Hitachi Ltd Printer equipped with line detecting mechanism

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150001605A (en) 2013-06-27 2015-01-06 코린주식회사 Information display body and connection member used in the information display body

Also Published As

Publication number Publication date
JPH0224678B2 (en) 1990-05-30

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