Appeal No. 96-2881
Application No. 08/013,646
pressure producing chamber forming members,
contacting said nozzle plate and disposed between said
pressure producing chambers, for defining said pressure
producing chambers;
a vibrating plate, contacting said pressure
producing chamber forming members and disposed a predetermined
distance from said nozzle plate, an upper surface of said
vibrating plate defining bottoms of said pressure producing
chambers; and
reinforcing members, disposed on a lower surface
of said vibrating plate, for reinforcing said vibrating plate,
at least one of said reinforcing members corresponding to said
pressure producing chamber forming members,
wherein said plurality of nozzle openings
comprise at least four rows of nozzle openings arranged in a
main scanning direction, said rows being arranged in groups,
each group comprising a pair of adjacent rows, a first space
between adjacent rows of the same pair being smaller than a
second space between adjacent rows of different pairs, each
row having a plurality of nozzle openings so as to extend
straightly in a sheet forward direction at a pitch
corresponding to the number of nozzle opening rows, and the
rows of nozzle openings in an auxiliary scanning direction are
staggered at a certain pitch so that an order of arrangement
of the rows of nozzle openings is different from the
physically arranged order,
and wherein said pressure producing chamber
forming members are disposed beneath said nozzle plate between
adjacent rows of the same pair.
The references relied on by the Examiner are as
follows:
Usui et al. (Usui) EP 0 443 628 A2 Aug. 28, 1991
3
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Next
Last modified: November 3, 2007