Document original size detecting device

Details Document original size detecting device Document original size detecting device

2007-08-07

2009-11-10

Luu, Thanh X (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

With circuit for evaluating a web, strand, strip, or sheet

C250S559400, C358S488000, C358S449000, C399S370000

Reexamination Certificate

active

07615768

ABSTRACT:
A document original size detecting device has a plurality of sensors each including a light emitting portion and a light receiving portion and respectively disposed as corresponding to different sizes of document originals to be placed on a transparent document platen and a detecting section which determines a document original size based on outputs of the sensors. The light emitting portion of each of the sensors emits light to illuminate at least two positions on a document placing region of the document platen on which a document original to be subjected to size detection is placed, and the detecting section determines the document original size based on whether or not the light receiving portion of each of the sensors detects the document original blocking the light in at least one of the two positions.

REFERENCES:
patent: 4511246 (1985-04-01), Nishiyama
patent: 4568181 (1986-02-01), Nishiyama
patent: 4614874 (1986-09-01), Fukuda et al.
patent: 4659214 (1987-04-01), Takemura et al.
patent: 4713550 (1987-12-01), Anzai et al.
patent: 4939377 (1990-07-01), Okuda et al.
patent: 4954846 (1990-09-01), Matsuo et al.
patent: 5519483 (1996-05-01), Kawanishi et al.
patent: 5693933 (1997-12-01), Takasu et al.
patent: 5-14260 (1993-02-01), None
patent: 06-130503 (1994-05-01), None

Affiliated with

Also associated with

Rating

Document original size detecting device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Document original size detecting device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Document original size detecting device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4064810