EP 0066187 A1 19821208 - An image density detecting device for image forming apparatus.
Title (en)
An image density detecting device for image forming apparatus.
Title (de)
Vorrichtung zur Feststellung der Bilddichte für ein Bilderzeugungsgerät.
Title (fr)
Dispositif de détection de la densité d'une image pour un appareil de formation d'images.
Publication
Application
Priority
- JP 7748281 A 19810522
- JP 7748381 A 19810522
Abstract (en)
An image density detecting device for an image forming apparatus includes a substantially rectangular diffusing member (42) for receiving light from document (S) through a focusing light-transmission member (22) and a plurality of photodiodes (43) embedded at a suitable interval in the bottom of the light diffusing member. The longitudinal dimension of the light receiving surface mentioned above has a longitudinal dimension equal to the width of a document set on a table and a transversal dimension corresponding to an area of the document surface illuminated by an exposure lamp (21A). Light reflected from the document illuminated by the exposure lamp (21A) is uniformalized throuch the light diffusing member (42) before it is detected by the photodiodes (43).
IPC 1-7
IPC 8 full level
G03G 15/00 (2006.01); G03G 15/04 (2006.01)
CPC (source: EP)
G03G 15/04 (2013.01); G03G 15/5025 (2013.01)
Citation (search report)
- [YP] DE 3117753 A1 19820211 - TOKYO SHIBAURA ELECTRIC CO [JP]
- [Y] DE 2653230 A1 19770714 - XEROX CORP
- [Y] DE 2605156 A1 19760826 - PLESSEY HANDEL INVESTMENT AG
- [Y] DE 2654465 B2 19810402
- [Y] DE 2856741 A1 19790705 - RICOH KK
- [A] DE 2837268 A1 19790308 - RICOH KK
- [A] DE 2140519 A1 19720217
- [Y] Patent Abstracts of Japan, Vol. 5, No. 9, 21 January 1981, & JP-A-55 138 754
Designated contracting state (EPC)
DE FR GB NL
DOCDB simple family (publication)
EP 0066187 A1 19821208; EP 0066187 B1 19851204; DE 3267764 D1 19860116
DOCDB simple family (application)
EP 82104363 A 19820518; DE 3267764 T 19820518