JPH01200344A - Printer focusing - Google Patents

Printer focusing

Info

Publication number
JPH01200344A
JPH01200344A JP2551488A JP2551488A JPH01200344A JP H01200344 A JPH01200344 A JP H01200344A JP 2551488 A JP2551488 A JP 2551488A JP 2551488 A JP2551488 A JP 2551488A JP H01200344 A JPH01200344 A JP H01200344A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
lens position
performed
error
positioning
lens
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
JP2551488A
Inventor
Yoshio Ozawa
Takao Shibagaki
Takashi Yamamoto
Original Assignee
Fuji Photo Film 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

Links

Abstract

PURPOSE: To shorten converging time for obtaining an AF curve by performing fine adjustment in the way that error between an initial lens position coarsely adjusted and a lens position for the most suitable focus is converged, and correcting the AF curve based on the lens position after the fine adjustment.
CONSTITUTION: When lens positioning is performed to magnification which is indicated in advance, for example if the positioning is performed by means of a non-corrected AF curve, the error between the lens position obtained by said operation and the lens position for the most suitable focus may be increased. Such bit error as this is, for example, judged by the visual observation of a workman, and much time may be spent for performing convergence from the initial lens position to the lens position for the most suitable focus. Therefore, the coarse adjustment of the focus of the initial lens position is performed based on a projected image after the lens positioning is performed. Thus, the error can be minimized and the converging time by the fine adjustment can be shortened.
COPYRIGHT: (C)1989,JPO&Japio
JP2551488A 1988-02-05 1988-02-05 Printer focusing Granted JPH01200344A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2551488A JPH01200344A (en) 1988-02-05 1988-02-05 Printer focusing

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2551488A JPH01200344A (en) 1988-02-05 1988-02-05 Printer focusing
US07305135 US4937620A (en) 1988-02-05 1989-02-02 Method of focusing printer
DE19893903263 DE3903263C2 (en) 1988-02-05 1989-02-03 A method for focusing a lens in a photographic enlarger

Publications (1)

Publication Number Publication Date
JPH01200344A true true JPH01200344A (en) 1989-08-11

Family

ID=12168170

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2551488A Granted JPH01200344A (en) 1988-02-05 1988-02-05 Printer focusing

Country Status (1)

Country Link
JP (1) JPH01200344A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6795165B2 (en) 2001-03-16 2004-09-21 Fuji Photo Film Co., Ltd. Focus inspection device and focusing method
US8032460B2 (en) 2000-07-27 2011-10-04 Daita Frontier Fund, Llc Authentication managing apparatus, and shop communication terminal

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8032460B2 (en) 2000-07-27 2011-10-04 Daita Frontier Fund, Llc Authentication managing apparatus, and shop communication terminal
US6795165B2 (en) 2001-03-16 2004-09-21 Fuji Photo Film Co., Ltd. Focus inspection device and focusing method

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