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. 16, 1987
Filed:
Sep. 27, 1985
Masayuki Mutoh, Machida, JP;
Shinji Kamiyama, Tokyo, JP;
Minolta Camera Kabushiki Kaisha, Osaka, JP;
Abstract
There is disclosed an ink jet printer of Hertz type. An ink jet is continuously forced out from a nozzle and broken into minute droplets. The droplets are selectively charged by applying pulse voltage. A row of charged droplets is removed and a row of uncharged droplets proceeds to the record medium and forms a dot thereon. The pulse width is controlled in order to allow a number of droplets included in one row of droplets, so that the diameter of dot is altered. The ink jet printer is able to produce high degree of tones by alteration of number of uncharged droplets in combination of the dot pattern moduration method or the dither method.