System for detecting inoperative inkjets in printheads ejecting clear ink using a rotating member having a light transmitting surface

• Main Author: BONINO PAUL S
• Format: Patent
• Language: English
• Published: 08.09.2015
• Subjects: ADDITIVE MANUFACTURING TECHNOLOGY; ADDITIVE MANUFACTURING, i.e. MANUFACTURING OFTHREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVEAGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING,STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING; CORRECTION OF TYPOGRAPHICAL ERRORS; i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; LINING MACHINES; PERFORMING OPERATIONS; PRINTING; SELECTIVE PRINTING MECHANISMS; STAMPS; TRANSPORTING; TYPEWRITERS

An apparatus detects inoperative inkjets in a printhead. The apparatus includes a rotating member having a light transmitting surface layer onto which material is ejected by the printhead. A light source directs light into the edge of the light transmitting surface layer and an optical sensor genera...