EP 0730969 A1 19960911 - Dot alignment in mixed resolution printer
Title (en)
Dot alignment in mixed resolution printer
Title (de)
Punktausrichtung für Drucker mit gemischter Auflösung
Title (fr)
Alignement de points pour imprimante à résolution mixte
Publication
Application
Priority
US 39940295 A 19950306
Abstract (en)
In the preferred form, a scanning carriage (20) in a color inkjet printer (10) houses a high resolution printhead (110) for black (or monochrome) printing and one or more lower resolution printheads (112) for color printing. The nozzle arrangements, paper feed increments, and ink drop firing frequency for the black printhead and color printhead(s) are selected to provide various alignments between the larger color ink dots (136) and the smaller black ink dots (132) to achieve maximum ink coverage with a minimum of ink or to achieve additional color shades. <IMAGE>
IPC 1-7
IPC 8 full level
B41J 2/07 (2006.01); B41J 2/205 (2006.01); B41J 2/21 (2006.01); B41J 2/24 (2006.01); B41J 2/51 (2006.01); B41J 3/54 (2006.01)
CPC (source: EP)
B41J 2/2121 (2013.01); B41J 2/2132 (2013.01); B41J 2/51 (2013.01)
Citation (applicant)
- US 14526193 A 19931029
- US 5655693 A 19930430
- US 95883392 A 19921008
- US 5278584 A 19940111 - KEEFE BRIAN J [US], et al
- US 5376958 A 19941227 - RICHTSMEIER BRENT W [US], et al
Citation (search report)
- [A] WO 9108902 A1 19910627 - SPECTRA INC [US]
- [A] EP 0378387 A2 19900718 - CANON KK [JP]
- [A] EP 0517543 A2 19921209 - CANON KK [JP]
- [A] EP 0595651 A2 19940504 - CANON KK [JP]
- [X] ALTHAUSER ET AL., IBM TECHNICAL DISCLOSURE BULLETIN, vol. 23, no. 7a, December 1980 (1980-12-01), pages 2700-2702, XP000570859
- [X] PATENT ABSTRACTS OF JAPAN vol. 18, no. 25 (M - 1542) 14 January 1994 (1994-01-14)
Designated contracting state (EPC)
DE GB IT
DOCDB simple family (publication)
EP 0730969 A1 19960911; EP 0730969 B1 19990512; DE 69509627 D1 19990617; DE 69509627 T2 19990902; JP H08258291 A 19961008
DOCDB simple family (application)
EP 95308424 A 19951123; DE 69509627 T 19951123; JP 4932396 A 19960306