Image forming device operable to start recording by setting recording materials

Claim 7

An image forming device comprising; (a) means for forming an image on recording materials, (b) means for feeding said recording materials to said image forming means, (c) first detection means for detecting presence and absence of said recording materials in a designated position of said feeding means, (i) second detection means for detecting a size of said recording materials, (j) means for storing the size of the recording material detected by said second detection means, (g) first control means for interrupting the operation of said image forming means when said first detection means detects an exhaustion of recording materials during the execution of said image forming operation, (k) means for comparing the size of replenished recording material detected by said second detection means with the size of the recording material which is stored in said storing means when said first detection means detects the replenishment of the recording material, and (m) second control means for maintaining said interruption and issuing a size difference warning if difference of the sizes is detected by said comparison means.

Claim 8

An image forming device comprising; (a) means for forming an image on recording materials, (b) means for feeding said recording materials to said image forming means, (c) first detection means for detecting presence and absence of said recording materials in a designated position of said feeding means, (i) second detection means for detecting a size of said recording materials, (j) means for storing the size of the recording material detected by said second detection means, (g) first control means for interrupting the operation of said image forming means when said first detection means detects an exhaustion of recording materials during the execution of said image forming operation, (k) means for comparing the size of replenished recording material detected by said second detection means with the size of the recording material which is stored in said storing means when said first detection means detects the replenishment of the recording material, and (m) second control means for maintaining said interruption and issuing a size difference warning if difference of the sizes is detected by said comparison means.

Claim 9

An image forming device comprising: (a) a means for forming an image on recording materials; (b) a means for feeding said recording materials to said image forming means; (c) a means for detecting presence and absence of said recording materials in a designated position of said feeding means; (d) a means for inputting a command for starting the operation of said image forming means; (e) a first control means for inhibiting said image forming means from starting the image forming operation if absence of recording materials is detected by said detection means when the operation start command is input by said input means, and (f) a second control means for starting the operation of said image forming means following release of said inhibition in response to a detection of presence of said recording materials in the designated position by said detection means.

Claim 10

An image forming device comprising: (a) a means for forming an image on recording materials; (b) a means for feeding said recording materials to said image forming means; (c) a means for detecting presence and absence of said recording materials in a designated position of said feeding means; (d) a means for inputting a command for starting the operation of said image forming means; (e) a first control means for inhibiting said image forming means from starting the image forming operation if absence of recording materials is detected by said detection means when the operation start command is input by said input means, and (f) a second control means for starting the operation of said image forming means following release of said inhibition in response to a detection of presence of said recording materials in the designated position by said detection means.

Claim 11

An image forming device as claimed in claim 5, wherein said second control means starts said image forming operation following release of said inhibition after a predetermined time from the detection of said recording materials by said detection means.

Claim 12

An image forming device as claimed in claim 6, wherein said feeding means is provided with a paper feeding cassette which accommodates the recording materials and which is mountable to and dismountable from the image forming device.

Claim 13

An image forming device comprising: (a) a means for forming an image on recording materials; (b) a means for feeding said recording materials to said image forming means; (c) a first detection means for detecting presence and absence of said recording materials in a designated position of said feeding means; (d) a second detection means for detecting a size of said recording materials; (e) a means for storing the size of the recording material detected by said second detection means; (f) a first control means for interrupting the operation of said image forming means when said first detection means detects an exhaustion of recording materials during the execution of said image forming operation; (g) a comparison means for comparing the size of replenished recording materials detected by said second detection means with the size of the recording material which is stored in said storing means when said first detection means detects the replenishment of the recording material, and (h) a second control means for executing said image forming operation following release of said interruption if the replenished recording material is detected by said comparison means to be of a size feasible for recording in place of the recording material before the interruption.

Claim 14

An image forming device comprising: (a) a means for forming an image on recording materials; (b) a means for feeding said recording materials to said image forming means; (c) a first detection means for detecting presence and absence of said recording materials in a designated position of said feeding means; (d) a second detection means for detecting a size of said recording materials; (e) a means for storing the size of the recording material detected by said second detection means; (f) a first control means for interrupting the operation of said image forming means when said first detection means detects an exhaustion of recording materials during the execution of said image forming operation; (g) a comparison means for comparing the size of replenished recording materials detected by said second detection means with the size of the recording material which is stored in said storing means when said first detection means detects the replenishment of the recording material, and (h) a second control means for executing said image forming operation following release of said interruption if the replenished recording material is detected by said comparison means to be of a size feasible for recording in place of the recording material before the interruption.

Claim 15

An image forming device as claimed in claim 8, wherein said second control means executes said image formation followed by releasing of said interruption after a predetermined time from detecting the replenished recording materials.

Claim 16

An image forming device as claimed in claim 8, wherein said feeding means is provided with a paper feeding cassette which accommodates the recording materials and which is freely mountable to and dismountable from the image forming device.

Claim 17

An image forming device as claimed in claim 10, wherein said second detection means comprises a plurality of marks arranged according to the kind of recording material defined in the paper feeding cassette, sensor means mounted on an image forming device side to detect said marks, and judgement means to decide the kind of the recording materials based on a signal from the sensor means.

Claim 18

An image forming device as claimed in claim 11, wherein said marks comprise projections, and said sensor means comprise microswitches.

Claim 19

An image forming device as claimed in claim 12, wherein said second detection means detects the mounting of the cassette to the image forming device.

Claim 20

An image forming device comprising: (a) a means for forming an image on recording materials; (b) a means for feeding said recording materials to said image forming means; (c) a first detection means for detecting presence and absence of said recording materials in a designated position of said feeding means; (d) a second detection means for detecting a kind of said recording materials; (e) a means for storing the kind of the recording material detected by said second detection means; (f) a first control means for interrupting the operation of said image forming means when said first detection means detects an exhaustion of recording materials during the execution of said image forming operation; (g) a means for comparing the kind of replenished recording material detected by said second detection means with the kind of the recording material which is stored in said storing means when said first detection means detects the replenishment of the recording material, and (h) a second control means for executing the image forming operation following release of said interruption if sameness of the kinds is detected by said comparison means.

Claim 21

An image forming device comprising: (a) a means for forming an image on recording materials; (b) a means for feeding said recording materials to said image forming means; (c) a first detection means for detecting presence and absence of said recording materials in a designated position of said feeding means; (d) a second detection means for detecting a kind of said recording materials; (e) a means for storing the kind of the recording material detected by said second detection means; (f) a first control means for interrupting the operation of said image forming means when said first detection means detects an exhaustion of recording materials during the execution of said image forming operation; (g) a means for comparing the kind of replenished recording material detected by said second detection means with the kind of the recording material which is stored in said storing means when said first detection means detects the replenishment of the recording material, and (h) a second control means for executing the image forming operation following release of said interruption if sameness of the kinds is detected by said comparison means.

Claim 22

An image forming device as claimed in claim 14, wherein said second detection means detects a size of the recording material.

Claim 23

An image forming device as claimed in claim 14, wherein said second detection means detects a thickness of the recording material.

Claim 24

An image forming device as claimed in claim 14, wherein said second detection means detects a color of the recording material.

Claim 25

An image forming device as claimed in claim 14, wherein said second control means executes the image forming operation following release of said interruption after a predetermined time from detecting the sameness of the kinds.

Claim 26

An image forming device as claimed in claim 14, wherein said feeding means is provided with a paper feeding cassette which accommodates the recording materials and which is freely mountable to and dismountable from the image forming device.

Claim 27

An image forming device as claimed in claim 19, wherein said second detection means comprises a plurality of marks arranged according to the kind of recording material defined in the paper feeding cassette, sensor means mounted on an image forming device side to detect said marks, and judgement means to decide the kind of the recording materials based on a signal from the sensor means.

Claim 28

An image forming device as claimed in claim 20, wherein said marks comprise projections, and said sensor means comprise microswitches.

Claim 29

An image forming device as claimed in claim 21, wherein said second detection means detects the mounting of the cassette to the image forming device.