公开(公告)号：US20140210891A1

公开(公告)日：2014-07-31

申请号：US13755181

申请日：2013-01-31

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Javier Gonzalez BRUNO ,  Marti Rius Rossell ,  Jordi Ferran Cases

IPC: B41J2/125 ,  G01J1/02

CPC classification number: G01J3/501 ,  B41J2/125 ,  G01J3/0208 ,  G01J3/027 ,  G01J3/46 ,  G01J2003/503 ,  H04N1/40056

Abstract: A densitometer includes a plurality of light-emitting diodes (LEDs) and at least one sensor. The LEDs are activated one at a time in a sequential, repeatable order. Photonic energy from each LED is reflected off an entity and is incident upon the sensor(s). Circuitry samples or acquires signaling from the sensor(s) in accordance with the respective LED activations. Signaling from the densitometer can be used in controlling ink-jetting printers or other apparatus.

Abstract translation: 密度计包括多个发光二极管（LED）和至少一个传感器。 LED以一种顺序，可重复的顺序一次被激活。 来自每个LED的光子能量被从实体反射并入射到传感器上。 根据相应的LED激活，电路采样或从传感器获取信号。 来自密度计的信号可用于控制喷墨打印机或其它设备。