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An inkjet print cartridge comprising a printhead that is formed using a sequence of etch process steps is described. The first etch of the two etch step process is comprised of a wet chemical etch. A dry etch process follows. Both etch steps are consecutively initiated from the back of the wafer. Th

An inkjet print cartridge comprising a printhead that is formed using a sequence of etch process steps is described. The first etch of the two etch step process is comprised of a wet chemical etch. A dry etch process follows. Both etch steps are consecutively initiated from the back of the wafer. The fabrication process described offers several advantages including precise dimensional control of the ink feed channel, greater packing density of ink ejectors disposed in the printhead and greater printing speed. Additionally, the time required to manufacture the printhead, in contrast to a conventional printhead, is reduced.

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An inkjet print cartridge comprising a printhead that is formed using a sequence of etch process steps is described. The first etch of the two etch step process is comprised of a wet chemical etch. A dry etch process follows. Both etch steps are consecutively initiated from the back of the wafer. Th

An inkjet print cartridge comprising a printhead that is formed using a sequence of etch process steps is described. The first etch of the two etch step process is comprised of a wet chemical etch. A dry etch process follows. Both etch steps are consecutively initiated from the back of the wafer. The fabrication process described offers several advantages including precise dimensional control of the ink feed channel, greater packing density of ink ejectors disposed in the printhead and greater printing speed. Additionally, the time required to manufacture the printhead, in contrast to a conventional printhead, is reduced. ger, N=2pin which p is an integer, in a power spectrum represented by formula (2), (2), the relationship between the value of nmax,at which is maximized in the range of n from 1 to N/2, and the pitch Wl(μm) or writing light which is coherent light for image formation is where m is an integer obtained by rounding off the decimals of provided that when wherein said Fourier transformation determines a surface roughness of said photosensitive layer. 14. The photoreceptor as claimed in claim 13, wherein said power spectrum represented by formula (2) has a plurality of peaks in a region where n satisfies 15. The photoreceptor as claimed in claim 13, wherein said power spectrum represented by formula (2) has a plurality of peaks in a region where n satisfies 16. A photoreceptor comprising a support, an undercoat layer formed on said support, and a photosensitive layer formed on said undercoat layer, wherein a power of a wave interface of the photosensitive layer represented by I(S), wherein I(S) determines a surface roughness of said photosensitive layer, is set to be 6×10-3or greater to reduce formation of abnormal images when a group of data of N samples of the height x(t) (μm) of a profile of the surface of said undercoat layer on the side of said photosensitive layer, measured perpendicular to a horizontal direction of said support, taken at Δt (μm) intervals in said horizontal direction, is subjected to Fourier transformation in accordance with formula (1): wherein n and m are each an integer, N=2pin which p is an integer, in a power spectrum represented by formula (2): I(S) is calculated from formula (4): 17. The photoreceptor as claimed in claim 16, wherein said power spectrum represented by formula (2) has a plurality of peaks in a region where n satisfies 18. The photoreceptor as claimed in claim 16, wherein said power spectrum represented by formula (2) has a plurality of peaks which satisfies in a region where n satisfies 19. The photoreceptor as claimed in claim 16, wherein said power spectrum represented by formula (2) has four or more peaks which satisfy in a region where n satisfies 20. The photoreceptor as claimed in claim 16, wherein said power spectrum represented by formula (2) has a plurality of peaks in a region where n satisfies 21. The photoreceptor as claimed in claim 17, wherein said power spectrum represented by formula (2) further has a plurality of peaks in a region where n satisfies 22. The photoreceptor as claimed in claim 18, wherein said power spectrum represented by formula (2) further has a plurality of peaks in a region where n satisfies 23. The photoreceptor as claimed in claim 19, wherein said power spectrum represented by formula (2) further has a plurality of peaks in a region where n satisfies 24. The photoreceptor as claimed in claim 16, wherein said power spectrum represented by formula (2) has a plurality of peaks which satisfies in a region where n satisfies 25. The photoreceptor as claimed in claim 17, wherein said power spectrum represented by formula (2) further has a plurality of peaks which satisfies in a region where n satisfies 26. The photoreceptor as claimed in claim 18, wherein said power spectrum represented by formula (2) further has a plurality of peaks which satisfies in a region where n satisfies 27. The photoreceptor as claimed in claim 19, wherein said power spectrum represented by formula (2) further has a plurality of peaks which satisfies in a region where n satisfies 28. A photoreceptor comprising a support, an undercoat layer formed on said support, and a photosensitive layer formed on said undercoat layer, wherein a power of a wave interface of the photosensitive layer controls formation of abnormal images when a group of data of N samples of the height x(t) (μm) of a profile at the surface of said undercoat layer on the side of said photosensitive layer, mea