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:
Jan. 30, 2001
Filed:
Jul. 06, 1998
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
An object of the present invention is to offer an image stabilizer device capable of effectively improving quality of images produced by an image forming apparatus of a type that changes the size of a basic pixel by controlling an irradiation time of write-in light, and to offer a pattern image reader device used for the purpose. A pattern image reader device,is constituted by a reader unit,that at least contains a semiconductor laser,, converging lens,, and photosensor,for reading the amount of reflected light, and the driving section,that contains a drive coil,for moving the reader unit,in the principal scanning direction, and can measure on the order of microns the size of a toner image formed on the surface of a transfer and transport belt,in the principal scanning direction by monitoring the output of the photosensor,while moving in the principal scanning direction under the control by the CPU,. The CPU,thereafter corrects lookup tables,to,according to the dot diameter measured in the principal scanning direction.