| 摘要 |
Toner is for use in an image forming apparatus of the TonerJet method, which satisfies any one of the following conditions: a) toner in which the content of reverse-polarity large-diameter toner is 10 % by count or smaller; b) toner in which the content of reverse-polarity fine-powder toner is 2 % by count or smaller; c) toner comprising a silica additive and a titanium oxide additive such that the content x of the titanium oxide additive is in the range of 0 < x </= 1.5 wt%. For instance, when an image is formed using toner satisfying the condition a) above, that is, toner in which the content of reverse-polarity large-diameter toner is 10 % by count or smaller, filming does not occur and an image having an excellent quality is formed (denoted with " &cir& "). On the other hand, when an image is formed using toner in which reverse-polarity large-diameter toner exceeds 10 % by count, filming occurs and the quality of an image deteriorates (denoted with "x"). <IMAGE>
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