JPS6451866A - Picture reader - Google Patents

Picture reader

Info

Publication number
JPS6451866A
JPS6451866A JP62209701A JP20970187A JPS6451866A JP S6451866 A JPS6451866 A JP S6451866A JP 62209701 A JP62209701 A JP 62209701A JP 20970187 A JP20970187 A JP 20970187A JP S6451866 A JPS6451866 A JP S6451866A
Authority
JP
Japan
Prior art keywords
picture
magnification
driving
microstep
pulse
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
JP62209701A
Other languages
Japanese (ja)
Other versions
JPH0681229B2 (en
Inventor
Jun Yokobori
Hiroyuki Maruyama
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.)
Konica Minolta Inc
Original Assignee
Konica Minolta 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 Konica Minolta Inc filed Critical Konica Minolta Inc
Priority to JP62209701A priority Critical patent/JPH0681229B2/en
Publication of JPS6451866A publication Critical patent/JPS6451866A/en
Publication of JPH0681229B2 publication Critical patent/JPH0681229B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Image Input (AREA)
  • Facsimile Scanning Arrangements (AREA)

Abstract

PURPOSE:To obtain an enlarged and reduced picture excellent in a picture quality even by using a driving means which cannot output the pulse of a high driving frequency by microstep driving the motor of a pulse control with the increase and the decrease of the number of divisions according to the enlarging and reducing magnification of the picture. CONSTITUTION:A stepping motor driver 31 rotates and drives the stepping motor 10 according to a command from a microcomputer (CPU) 32. The magnification data of the picture is applied to the CPU 32 and the motor at the time of reading scanning is microstep driven by increasing and decreasing the number of the divisions according to the enlarging and reducing magnification of the picture. Thereby, the driving frequency for the microstep driving can be changed to a proper value according to the magnification of the picture and the picture excellent in the picture quality can be obtained irrespective of the enlargement and the reduction even by using the driving means which cannot output the pulse of the high driving frequency.
JP62209701A 1987-08-24 1987-08-24 Image reader Expired - Lifetime JPH0681229B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62209701A JPH0681229B2 (en) 1987-08-24 1987-08-24 Image reader

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62209701A JPH0681229B2 (en) 1987-08-24 1987-08-24 Image reader

Publications (2)

Publication Number Publication Date
JPS6451866A true JPS6451866A (en) 1989-02-28
JPH0681229B2 JPH0681229B2 (en) 1994-10-12

Family

ID=16577203

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62209701A Expired - Lifetime JPH0681229B2 (en) 1987-08-24 1987-08-24 Image reader

Country Status (1)

Country Link
JP (1) JPH0681229B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02146862A (en) * 1988-11-29 1990-06-06 Toshiba Corp Picture reader
US6009292A (en) * 1996-10-25 1999-12-28 Minolta Co., Ltd. Image reader
US6816288B1 (en) 2000-11-09 2004-11-09 Kabushiki Kaisha Toshiba Image reading apparatus and image reading method

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57143981A (en) * 1981-03-03 1982-09-06 Canon Inc Facsimile transmitter
JPS57193170A (en) * 1981-05-22 1982-11-27 Fuji Photo Film Co Ltd Subscanning method
JPS5863096A (en) * 1981-10-08 1983-04-14 Japan Servo Co Ltd Driving device for stepping motor
JPS59109043A (en) * 1982-12-13 1984-06-23 Ricoh Co Ltd Image reading and scanning system of copying machine
US4518907A (en) * 1983-11-07 1985-05-21 The Superior Electric Company Digital motor control method and means
JPS61196799A (en) * 1985-02-22 1986-08-30 Fukui Denshi Giken:Kk Pulse motor drive device
JPS62114497A (en) * 1985-11-12 1987-05-26 Mitsutoyo Mfg Corp Electric driver

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57143981A (en) * 1981-03-03 1982-09-06 Canon Inc Facsimile transmitter
JPS57193170A (en) * 1981-05-22 1982-11-27 Fuji Photo Film Co Ltd Subscanning method
JPS5863096A (en) * 1981-10-08 1983-04-14 Japan Servo Co Ltd Driving device for stepping motor
JPS59109043A (en) * 1982-12-13 1984-06-23 Ricoh Co Ltd Image reading and scanning system of copying machine
US4518907A (en) * 1983-11-07 1985-05-21 The Superior Electric Company Digital motor control method and means
JPS61196799A (en) * 1985-02-22 1986-08-30 Fukui Denshi Giken:Kk Pulse motor drive device
JPS62114497A (en) * 1985-11-12 1987-05-26 Mitsutoyo Mfg Corp Electric driver

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02146862A (en) * 1988-11-29 1990-06-06 Toshiba Corp Picture reader
US6009292A (en) * 1996-10-25 1999-12-28 Minolta Co., Ltd. Image reader
US6816288B1 (en) 2000-11-09 2004-11-09 Kabushiki Kaisha Toshiba Image reading apparatus and image reading method
US6914702B2 (en) 2000-11-09 2005-07-05 Kabushiki Kaisha Toshiba Image reading apparatus and image reading method

Also Published As

Publication number Publication date
JPH0681229B2 (en) 1994-10-12

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