Electrostatic recording apparatus forming small non-recording regions in a recording field

Claim 2

Electrostatic recording apparatus for forming small non-recording regions in a recording field comprising: beam generating means for generating a beam modulated with a modulation signal; irradiating means for directing the beam obtained from said bean generating means to a photosensitive member for forming an electrostatic image; determining means for determining if the electrostatic image formed by said beam on said photosensitive member exceeds a determined dimension; interrupting means for interrupting intermittently emission of said beam at small time intervals; and actuating means for actuating said interrupting means when said determining means determines that said electrostatic image formed by said beam exceeds the determined dimension.

Claim 3

Electrostatic recording apparatus according to claim 1, wherein said determining means comprises memory means for storing a determined amount of recording signals, and detecting means for detecting whether all the recording signals stored in said memory means are in the same state.

Claim 4

Electrostatic recording apparatus according to claim 2, wherein said irradiating means comprises deflecting means for deflecting said beam generated by said beam generating means in order to scan said photosensitive member with said beam.

Claim 5

Electrostatic recording apparatus according to claim 1, further comprising inhibiting means for inhibiting actuation of said interrupting means when said determining means determines that said electrostatic image formed by said beam is smaller than a determined dimension.

Claim 6

Electrostatic recording apparatus for forming small non-recording regions in a recording field comprising: beam generating means for generating a beam modulated with a modulation signal; irradiating means for directing the beam obtained from said beam generating means to a photosensitive member for forming an electrostatic image; determining means for determining if the electrostatic image formed by said beam on said photosensitive member meets a determined form; interrupting means for interrupting intermittently emission of said beam at small time intervals; and actuating means for actuating said interrupting means when said determining means determines that said electrostatic image formed by said beam meets the determined form.

Claim 7

Electrostatic recording apparatus for forming small non-recording regions in a recording field comprising: beam generating means for generating a beam modulated with a modulation signal; irradiating means for directing the beam obtained from said beam generating means to a photosensitive member for forming an electrostatic image; determining means for determining if the electrostatic image formed by said beam on said photosensitive member meets a determined form; interrupting means for interrupting intermittently emission of said beam at small time intervals; and actuating means for actuating said interrupting means when said determining means determines that said electrostatic image formed by said beam meets the determined form.

Claim 8

Electrostatic recording apparatus according to claim 5, wherein said determination means comprises memory means for storing recording signals in a determined form, and detecting means for detecting whether all the recording signals stored in said memory means are in the same state.

Claim 9

Electrostatic recording apparatus according to claim 5, further comprising inhibiting means for inhibiting actuation of said interrupting means when said determining means determines that said electrostatic image formed by said beam does not meet the determined form.

Claim 10

Electrostatic recording apparatus for forming small non-recording regions in a recording field comprising: beam generating means for generating a beam modulated with a modulation signal; irradiating means for directing the beam obtained from said beam generating means to a photosensitive member for forming an electrostatic image; determining means for determining if the image formed on said photosensitive member is an edge portion of an electrostatic image; interrupting means for interrupting intermittently emission of said beam at small time intervals; and actuating means for actuating said interrupting means when said determining means determines that the image formed by said beam is not an edge portion of the electrostatic image.

Claim 11

Electrostatic recording apparatus for forming small non-recording regions in a recording field comprising: beam generating means for generating a beam modulated with a modulation signal; irradiating means for directing the beam obtained from said beam generating means to a photosensitive member for forming an electrostatic image; determining means for determining if the image formed on said photosensitive member is an edge portion of an electrostatic image; interrupting means for interrupting intermittently emission of said beam at small time intervals; and actuating means for actuating said interrupting means when said determining means determines that the image formed by said beam is not an edge portion of the electrostatic image.

Claim 12

Electrostatic recording apparatus according to claim 8, wherein said determining means comprises memory means for storing recording signals of region neighboring to a region to be recorded, and detecting means for detecting whether all the recording signals stored in said memory means are signals to be recorded as a visible image.

Claim 13

Electrostatic recording apparatus according to claim 8, further comprising inhibiting means for inhibiting actuation of said interrupting means when said determining means determines that the image formed by said beam is an edge portion of the electrostatic image.

Claim 14

Electrostatic recording apparatus for forming small non-recording regions in a recording field comprising: beam generating means for generating a beam modulated with a modulation signal; a beam receiving member for receiving the beam obtained from said beam generating means to form a corresponding image; deflecting means positioned between said beam generating means and said beam receiving member for deflecting said beam to scan said beam receiving member with said beam; and means for generating the modulation signal to form small recording regions at a predetermined repetition period in regions of the recording field except for the peripheral portions thereof during a deflection interval of said deflecting means and to from the small recording regions at the predetermined repetition period but at a different position in the regions of the recording field except for the peripheral portions thereof during another deflection interval of said deflecting means.

Claim 15

Electrostatic recording apparatus for forming small non-recording regions in a recording field comprising: beam generating means for generating a beam modulated with a modulation signal; a beam receiving member for receiving the beam obtained from said beam generating means to form a corresponding image; deflecting means positioned between said beam generating means and said beam receiving member for deflecting said beam to scan said beam receiving member with said beam; and means for generating the modulation signal to form small recording regions at a predetermined repetition period in regions of the recording field except for the peripheral portions thereof during a deflection interval of said deflecting means and to from the small recording regions at the predetermined repetition period but at a different position in the regions of the recording field except for the peripheral portions thereof during another deflection interval of said deflecting means.

Claim 16

Electrostatic recording apparatus according to claim 11, further comprising: beam detecting means for detecting arrival of said deflected beam at a determined position; and supply means for supplying a beam detecting signal from said beam detecting means to said modulation signal generating means.

Claim 17

Electrostatic recording apparatus according to claim 11, wherein said modulation signal forming means comprises: signal generating means for generating two signals of the same frequency and of different phrases in synchronism with beam detection by said beam detecting means; and selecting means for alternately selecting the signals from said signal generating means in response to the beam detection by said beam detecting means.

Claim 18

Electrostatic recording apparatus for forming small non-recording regions in a recording field comprising: beam generating means for generating a beam modulated with a modulation signal; a beam receiving member for receiving the beam obtained from said beam generating means to form a corresponding image; deflecting means positioned between said beam generating means and said beam receiving member for deflecting said beam to scan said beam receiving member with said beam; memory means for storing first recording information involved in a scan line already scanned, second recording information involved in a scan line currently under recording and third recording information involved in a scan line to be scanned next; means, responsive to the three informations stored in said memory means, for deciding whether the recording information is said memory means is to be recorded as it is; and interrupting means for periodically interrupting the beam generated by said beam generating means in response to output signals of said deciding means.

Claim 19

Electrostatic recording apparatus for forming small non-recording regions in a recording field comprising: beam generating means for generating a beam modulated with a modulation signal; a beam receiving member for receiving the beam obtained from said beam generating means to form a corresponding image; deflecting means positioned between said beam generating means and said beam receiving member for deflecting said beam to scan said beam receiving member with said beam; memory means for storing first recording information involved in a scan line already scanned, second recording information involved in a scan line currently under recording and third recording information involved in a scan line to be scanned next; means, responsive to the three informations stored in said memory means, for deciding whether the recording information is said memory means is to be recorded as it is; and interrupting means for periodically interrupting the beam generated by said beam generating means in response to output signals of said deciding means.

Claim 20

Electrostatic recording apparatus according to claim 14, further comprising shift means for shifting the first, second and third recording information stored in said memory means.

Claim 21

Electrostatic recording apparatus according to claim 14, wherein said memory means comprises first memory means for storing first recording information, second memory means for storing second recording information, third memory means for storing third recording information, first transfer means for transferring the content of said second memory means to said first memory means, and second transfer means for transferring the content of said third memory means to said second memory means.

Claim 22

Electrostatic recording apparatus for forming small non-recording regions in a recording field comprising: beam generating means for generating a beam modulated with a modulation signal; irradiating means for directing said beam obtained from said beam generating meams to a photosensitive member for forming an electrostatic image; means for producing a recording signal; means for generating a masking signal to intermittently interrupt the recording signal; means for generating the modulation signal by combining the recording signal with the masking signal; and selecting means for selecting whether or not to actuate said masking general generating means.

Claim 23

Electrostatic recording apparatus for forming small non-recording regions in a recording field comprising: beam generating means for generating a beam modulated with a modulation signal; irradiating means for directing said beam obtained from said beam generating meams to a photosensitive member for forming an electrostatic image; means for producing a recording signal; means for generating a masking signal to intermittently interrupt the recording signal; means for generating the modulation signal by combining the recording signal with the masking signal; and selecting means for selecting whether or not to actuate said masking general generating means.

Claim 24

Electrostatic recording apparatus according to claim 17, wherein said selecting means comprises a switch.

Claim 25

Electrostatic recording apparatus according to claim 11, wherein said modulated signal generating means includes: means for varying a dimension of said small recording regions.

Claim 26

Electrostatic recording apparatus according to claim 19, wherein said varying means comprises a one-shot multivibrator.