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:
May. 21, 1985
Filed:
May. 03, 1983
Applicant:
Inventor:
Shigemitsu Tazaki, Matsudo, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E01D / ;
U.S. Cl.
CPC ...
3461 / ; 346 75 ;
Abstract
An ink jet printer comprises a recording head for discharging ink from an end thereof, a capping unit for releasably sealing the end of the recording head, a suction unit for sucking the end of the recording head by a negative pressure and an indication unit for indicating that a suction recovery operation is in progress until the negative pressure of the suction unit reaches a predetermined level.