JPH01214555A - Medium carrying mechanism - Google Patents

Medium carrying mechanism

Info

Publication number
JPH01214555A
JPH01214555A JP3936488A JP3936488A JPH01214555A JP H01214555 A JPH01214555 A JP H01214555A JP 3936488 A JP3936488 A JP 3936488A JP 3936488 A JP3936488 A JP 3936488A JP H01214555 A JPH01214555 A JP H01214555A
Authority
JP
Japan
Prior art keywords
medium
detected
memory
skew
cpu
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
JP3936488A
Other languages
Japanese (ja)
Inventor
Akiji Nakatsu
Tetsuji Shimojo
Koji Tanaka
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP3936488A priority Critical patent/JPH01214555A/en
Publication of JPH01214555A publication Critical patent/JPH01214555A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To detect skew quantity of medium for making it possible to correct skew in correspondence to skew quantity by counting difference in time or medium carrying quantity detected about medium by two sensors.
CONSTITUTION: When it is detected that medium 1 carried in accordance with a program in a memory 14 reached to on a sensor 4 with a medium detecting circuit 11, a CPU 10 orders a counter 13 to start counting on carrying step numbers by a step motor 3a or 3b. Still, when it is detected that, on being sent, the medium 1 reached a position on a sensor 5 with the medium detecting circuit 11, the CPU 10 judges whether carrying of medium 1 is of normal or not on comparing counted value on the counter 13 with a set value within the memory 14. If the carrying is normal, the same sends order to a medium driving circuit 12 so as to continue carrying. When it is abnormal, the same send order to the medium driving circuit so as to carry in only regulated time on changing rotation speed of the step motor 3b in accordance with a program within a memory 14.
COPYRIGHT: (C)1989,JPO&Japio
JP3936488A 1988-02-24 1988-02-24 Medium carrying mechanism Pending JPH01214555A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3936488A JPH01214555A (en) 1988-02-24 1988-02-24 Medium carrying mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3936488A JPH01214555A (en) 1988-02-24 1988-02-24 Medium carrying mechanism

Publications (1)

Publication Number Publication Date
JPH01214555A true JPH01214555A (en) 1989-08-28

Family

ID=12551007

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3936488A Pending JPH01214555A (en) 1988-02-24 1988-02-24 Medium carrying mechanism

Country Status (1)

Country Link
JP (1) JPH01214555A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5471290A (en) * 1993-05-20 1995-11-28 Fujitsu Limited Image forming apparatus
EP0694411A3 (en) * 1994-07-26 1996-11-13 Mitsubishi Electric Corp Sheet carrying apparatus
JP2007031098A (en) * 2005-07-28 2007-02-08 Canon Inc Sheet transporting device, image forming device, and image reading device
JP2008050132A (en) * 2006-08-25 2008-03-06 Ricoh Co Ltd Automatic document conveying device and image reading device
CN108137254A (en) * 2015-12-08 2018-06-08 惠普发展公司有限责任合伙企业 Medium skew correction
US10569980B2 (en) 2015-12-08 2020-02-25 Hewlett-Packard Development Company, L.P. Media alignment calibration

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5471290A (en) * 1993-05-20 1995-11-28 Fujitsu Limited Image forming apparatus
EP0694411A3 (en) * 1994-07-26 1996-11-13 Mitsubishi Electric Corp Sheet carrying apparatus
US5609428A (en) * 1994-07-26 1997-03-11 Mitsubishi Denki Kabushiki Kaisha Sheet carrying apparatus
US5676477A (en) * 1994-07-26 1997-10-14 Mitsubishi Denki Kabushiki Kaisha Sheet carrying apparatus
JP2007031098A (en) * 2005-07-28 2007-02-08 Canon Inc Sheet transporting device, image forming device, and image reading device
JP4641460B2 (en) * 2005-07-28 2011-03-02 キヤノン株式会社 Sheet conveying apparatus, image forming apparatus, and image reading apparatus
JP2008050132A (en) * 2006-08-25 2008-03-06 Ricoh Co Ltd Automatic document conveying device and image reading device
JP4721441B2 (en) * 2006-08-25 2011-07-13 株式会社リコー Automatic document feeder and image reading apparatus
CN108137254A (en) * 2015-12-08 2018-06-08 惠普发展公司有限责任合伙企业 Medium skew correction
US10569980B2 (en) 2015-12-08 2020-02-25 Hewlett-Packard Development Company, L.P. Media alignment calibration

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