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:
Dec. 19, 1995
Filed:
Oct. 19, 1993
Tetsuji Fuwa, Hashima, JP;
Keiji Seo, Nagoya, JP;
Brother Kogyo Kabushiki Kaisha, Nagoya, JP;
Abstract
A stamp apparatus prevents a used stencil plate from being used again for making a plate. The apparatus includes a reflective photo sensor that determines if thermal paper of the currently set stencil plate is colored from a past plate-making process. On detecting the colored thermal paper, the sensor prompts an LCD to give an alarm display warning the user of the used stencil plate. Alternatively, a retractable projection interferes with insertion of a used stencil plate. In both cases, the stamp apparatus remains disabled until the used stencil plate is removed. This protects the stamp apparatus from getting soiled or damaged by spilled ink from the used stencil plate set inadvertently by the user.