The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 30, 2009
Filed:
Jan. 21, 2005
Souichi Nakazawa, Ibaraki, JP;
Takahiro Inoue, Ibaraki, JP;
Atsushi Miyamoto, Ibaraki, JP;
Masahiro Mizuno, Ibaraki, JP;
Souichi Nakazawa, Ibaraki, JP;
Takahiro Inoue, Ibaraki, JP;
Atsushi Miyamoto, Ibaraki, JP;
Masahiro Mizuno, Ibaraki, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An operator sets a distance from the page head of an alignment mark using a mark position setting switch mounted in a duplex printing system. A first printer forms the alignment mark in a position of the distance from the page head of a web, and reports position information about the alignment mark to a second printer. The alignment mark is detected by mark detection means of the second printer. Control means performs control of a web transport speed so that a phase between generation timing of a mark detection signal which the mark detection means generates by detecting the alignment mark and control timing calculated from alignment mark position data, alignment mark interval data and a web feed control signal generated at a preset period becomes constant.