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:
Aug. 01, 2000
Filed:
Mar. 07, 1997
Applicant:
Inventors:
Atsushi Ashikagaya, Ohgawara-machi, JP;
Takayuki Onodera, Iwanuma, JP;
Assignee:
Tohoku Ricoh Co., ltd., Shibata-gun, JP;
Primary Examiner:
Int. Cl.
CPC ...
B41L / ;
U.S. Cl.
CPC ...
101120 ; 101116 ;
Abstract
A stencil printer or similar printer and an ink viscosity sensing device therefor are disclosed. The viscosity of ink which is the root cause of the degradation of image equality ascribable to, e.g., temperature and down time is directly sensed. The viscosity is combined with other information including a set print speed and the kind of the ink in order to effect delicate print pressure control matching the actual conditions of the printer. Stable image quality with a minimum of fluctuation is achievable against the varying environment and without resorting to complicated control pattern tables or a number of sensors.