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. 03, 1993
Filed:
Mar. 20, 1992
Satoru Kuwabara, Chiryu, JP;
Brother Kogyo Kabushiki Kaisha, Nagoya, JP;
Abstract
An image recording apparatus which records an image of an original document on an image receiving sheet with the use of a photosensitive recording medium, the image receiving sheet having front and rear faces differing in reflection ratio. To detect error in sheet face orientation, a sheet face sensor unit is provided upstream of a pressure developing unit which discriminates a face of the image receiving sheet. The sensor unit includes a light emitting element for emitting light toward the face of the image receiving sheet and a light receiving element for receiving light emitted from the light emitting element and reflected on the face of the image receiving sheet. A central processing unit computes a reflection ratio based on the data supplied thereto and produces a discrimination signal indicative of the face of the image receiving sheet based on the reflection ratio being computed. A predetermined number of most recently detected data regarding light receiving amount at the light receiving element and the associated discrimination signals are accumulated in a memory. On the basis of the accumulated data, a threshold value for determining the face of the image receiving sheet or the light emission amount of the light emitting element is set.